Device, wireless communication system, and communication method

Abstract

In the present invention, a first device executes relay between a base station and a second device having a lower complexity than a Narrow Band Internet of Things (NB-IoT) device, the first device comprising: a control unit that generates a report to be transmitted to the base station; and a transmission unit that transmits the report to the base station.

Description

Device, wireless communication system, and communication method

[0001] The present disclosure relates to a device, a wireless communication system, and a communication method.

[0002] For NR (New Radio) (also called "5G"), the successor system to LTE (Long Term Evolution), technologies are being considered that meet the requirements of a large-capacity system, high-speed data transmission speed, low latency, simultaneous connection of a large number of terminals, low cost, low power consumption, etc. (see, for example, Non-Patent Document 1).

[0003] Furthermore, in Release 18 (Rel-18) of 3GPP (registered trademark), ambient IoT (A-IoT: Ambient Internet of Things) is being considered (see, for example, Non-Patent Document 2). Ambient IoT targets devices with extremely simple configurations for low-end IoT applications that operate with extremely low power consumption.

[0004] 3GPP TS 38.300 V17.3.0 (2022-12)”Revised SID on Ambient IoT”, RP-232404, 3GPP TSG RAN Meeting #101, September 2023 “Summary for RAN Rel-19 Package: RAN1 / 2 / 3-led”, RP-232745, 3GPP RAN #102, December 2023 “Study on solutions for Ambient IoT (Internet of Things) in NR”, RP-234058, 3GPP TSG RAN Meeting #102, December 2023 3GPP TS 36.211 V16.8.0 (2023-09)3GPP TR 38.848 V1.0.0 (2023-09)

[0005] In an A-IoT communication system that includes ambient IoT devices, it is expected that devices included in the communication system will report to a base station, but there is room for consideration regarding these reports.

[0006] One aspect of the present disclosure provides a device, a wireless communication system, and a communication method capable of performing appropriate reporting in an A-IoT communication system including an ambient IoT device.

[0007] A device according to one aspect of the present disclosure is a first device that relays between a base station and a second device that is less complex than an NB-IoT (Narrow Band Internet of Things) device, and includes a control unit that generates a report to be sent to the base station, and a transmission unit that sends the report to the base station.

[0008] 1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure. FIG. 1 is a diagram illustrating Topology 1. FIG. 2 is a diagram illustrating Topology 3 in DL support. FIG. 3 is a diagram illustrating Topology 4 in UL support. FIG. 4 is a diagram illustrating an example of interactions between a network and an A-IoT device according to an embodiment of the present disclosure. FIG. 5 is a diagram illustrating a DT case in Topology 2. FIG. 6 is a diagram illustrating a DO-DTT case in Topology 2. FIG. 7 is a diagram illustrating an example of a correspondence relationship regarding report timing in the DT case. FIG. 8 is a diagram illustrating an example of a correspondence relationship regarding report timing in the DO-DTT case. FIG. 9 is a diagram illustrating a first example of a report flow for multiple transmissions from an int. UE. FIG. 10 is a diagram illustrating a second example of a report flow for multiple transmissions from an int. UE. FIG. 11 is a block diagram illustrating an example of a configuration of a base station according to an embodiment of the present disclosure. FIG. 12 is a block diagram illustrating an example of a configuration of a device according to an embodiment of the present disclosure. FIG. 13 is a block diagram illustrating an example of a configuration of an intermediate node according to an embodiment of the present disclosure. FIG. 14 is a diagram illustrating an example of the hardware configuration of a base station, a device, and an intermediate node according to an embodiment of the present disclosure. FIG. 15 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present disclosure.

[0009] Hereinafter, an embodiment according to one aspect of the present disclosure will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present disclosure is applied is not limited to the following embodiment.

[0010] In the operation of the wireless communication system according to the embodiment of the present disclosure, existing technology is used as appropriate. The existing technology is, for example, the existing LTE or NR, but is not limited to the existing LTE or NR. In addition, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems subsequent to LTE-Advanced, unless otherwise specified.

[0011] In addition, in the embodiments of the present disclosure described below, terms 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) used in existing LTE are used. This is for convenience of description, and similar signals, functions, etc. may be referred to by other names. Furthermore, 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] Furthermore, in the embodiments of the present disclosure, the duplex method may be a time division duplex (TDD) method, a frequency division duplex (FDD) method, or another method (for example, flexible duplex, etc.).

[0013] Furthermore, in the embodiments of the present disclosure, "configuring" radio parameters and the like may mean that predetermined values ​​are pre-configured, or that radio parameters notified from a base station, a device, and the like are set.

[0014] (Embodiment) <Wireless Communication System> Fig. 1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure. As illustrated in Fig. 1, the wireless communication system 1 includes a base station 10 and a device 20. While Fig. 1 illustrates one base station 10 and one device 20, this is merely an example, and multiple base stations and devices may exist. The device 20 may be considered a form of terminal (UE: User Equipment) and may be an ambient IoT device, which is a device with lower complexity than an NB-IoT device. The ambient IoT device may also be referred to as an ambient IoT terminal, ambient IoT UE, A-IoT UE, etc.

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

[0016] The base station 10 transmits DL (Downlink) signals such as control information, setting information, and data to the device 20. The base station 10 receives UL signals such as control information, information related to the processing capability of the device 20 (capability (information) or device capability (information); for example, capability, device capability, A-IoT capability, A-IoT device capability, etc.), and data from the device 20 via UP (Uplink).

[0017] Channels used for transmitting DL signals include, for example, data channels and control channels. For example, the data channel may include a physical downlink shared channel (PDSCH), and the control channel may include a physical downlink control channel (PDCCH). For example, the base station 10 transmits control information to the device 20 using the PDCCH, and transmits DL data signals using the PDSCH. Note that the PDSCH is an example of a downlink shared channel or a data channel, and the PDCCH is an example of a downlink control channel. The PDCCH may be interpreted as downlink control information (DCI), control information, etc. transmitted in the PDCCH.

[0018] As will be described later, the wireless communication system may include intermediate nodes, assisting nodes, and / or terminals (UEs) (see <Device Types and Topologies> below). Note that, hereinafter, "and / or" may be written simply as " / ".

[0019] The device 20 is a communication device equipped with wireless communication capabilities, and as described above, may be an ambient IoT device (e.g., a sensor, etc.).

[0020] The device 20 receives DL signals such as control signals, setting information, and data from the base station 10 via DL, and transmits UL signals such as control signals, capability information of the device 20, and data to the base station 10 via UL.

[0021] Channels used for transmitting UL signals include, for example, data channels and control channels. For example, the data channel may include a physical uplink shared channel (PUSCH), and the control channel may include a physical uplink control channel (PUCCH). For example, the device 20 transmits control information using the PUCCH and transmits UL data signals using the PUSCH. Note that the PUSCH is an example of an uplink shared channel or a data channel, and the PUCCH is an example of an uplink control channel. Note that the PUSCH or the PUCCH may be interpreted as uplink control information (UCI), control information, etc. transmitted in the PUSCH or the PUCCH.

[0022] <Ambient IoT> Rel-18 approved the study of ambient IoT, which is even lower-end than the existing NB-IoT (see, for example, Section 10 of Non-Patent Document 5) (see, for example, Non-Patent Document 2). Ambient IoT targets ultra-low power consumption and ultra-low complexity devices.

[0023] In Ambient IoT, for example, the following deployment scenarios and characteristics may be considered for relevant use cases: Indoor or outdoor environment Base station type, e.g., macro / micro / pico cell-based deployment Connectivity topology, e.g., which nodes communicate with Ambient IoT devices, such as base stations, terminals (UE), relays and repeaters Duplexing method, TDD or FDD, licensed or unlicensed frequency band Coexistence with UE and network equipment in frequency bands for existing 3GPP technologies Assumptions of traffic originating from / terminating to devices

[0024] Based on the above deployment scenarios and characteristics, for example, the following RAN design targets can be formulated: Power consumption Complexity Coverage Data rate Positioning accuracy

[0025] Based on deployment scenarios appropriate for the relevant use cases, compare and evaluate the feasibility of meeting design targets and identify supporting features.

[0026] <Device Types and Topologies> Based on the results of the study items, TR 38.848 (Non-Patent Document 6) was approved. TR 38.848 considers the following categories of ambient IoT devices: Device A: Device A does not have power (energy) storage, does not have independent signal generation or signal amplification functions, and performs backscattering transmission. Device B: Device B has power storage, does not have independent signal generation functions, and performs backscattering transmission. Device B uses the stored power to amplify reflected signals. Device C: Device C has power storage, independent signal generation functions, and has an active RF (radio frequency) component for transmission.

[0027] The complexity of device A is assumed to be about the same as RFID (Frequency Frequency Identification).

[0028] TR 38.848 defines the following topologies 1 to 4 in an ambient IoT network.

[0029] Fig. 2 is a diagram illustrating Topology 1. As shown in Fig. 2, Topology 1 is a configuration in which a base station (BS) and an ambient IoT device communicate with each other. The ambient IoT device directly communicates with the base station in a two-way manner.

[0030] 3 is a diagram illustrating Topology 2. As shown in FIG. 3, Topology 2 is a configuration in which a base station and an ambient IoT device communicate with each other via an intermediate node. The ambient IoT device performs bidirectional communication with the intermediate node located between the base station and the ambient IoT device. The intermediate node may be, for example, a relay, an integrated access and backhaul (IAB) node, a UE, a repeater, or the like.

[0031] 4 is a diagram illustrating Topology 3 in DL assistance. As shown in FIG. 4, Topology 3 is a configuration including communication between a base station and an assisting node, communication between the assisting node and an ambient IoT device, and communication between the ambient IoT device and a base station.

[0032] The support node supports DL communication. For example, as shown in Figure 4, the support node receives DL signals from the base station and transmits the received DL signals to the ambient IoT device. For UL communication, the ambient IoT device transmits UL signals directly to the base station.

[0033] Fig. 5 is a diagram illustrating Topology 3 in UL support. As shown in Fig. 5, Topology 3 is a configuration including communication between a base station and a support node, communication between a support node and an ambient IoT device, and communication between the ambient IoT device and a base station.

[0034] The support node supports UL communication. For example, as shown in Figure 5, the support node receives UL signals from the ambient IoT device and transmits the received UL signals to the base station. For DL ​​communication, the ambient IoT device receives DL signals directly from the base station.

[0035] The supporting nodes shown in FIGS. 4 and 5 may be, for example, relays, IAB nodes, UEs, repeaters, etc.

[0036] 6 is a diagram illustrating Topology 4. Topology 4 is a configuration in which a UE and an ambient IoT device communicate with each other. The ambient IoT device performs bidirectional communication with the UE. Communication related to Topology 4 may be considered as side link (SL) communication.

[0037] In the above topologies 1 to 4, the ambient IoT device may be provided with a carrier wave from another node inside or outside the topology (see Section 4.2.1 of Non-Patent Document 6).

[0038] The wireless communication system 1 (wireless communication network) may include a base station, a support node, an intermediate node, and / or a terminal (UE of Topology 4) in addition to the device 20. In this specification, the base station, the support node, the intermediate node, and the terminal may be read as a network or a (network) node. Also, an A-IoT device may be simply referred to as A-IoT.

[0039] Backscatter Transmission Base stations, intermediate nodes, support nodes, and other nodes transmit RF signals to ambient IoT devices that are activated and obtain power from the RF operating field from the base stations, intermediate nodes, support nodes, and other nodes via inductive coupling.

[0040] The ambient IoT device backscatters and modulates the RF signals received from the base station, intermediate node, support node, and other nodes by switching the reflection coefficient of the device's antenna, and transmits information to the base station, intermediate node, support node, and other nodes.

[0041] FIG. 7 is a diagram illustrating backscatter transmission. FIG. 7 shows an example in which an ambient IoT device transmits information by performing ON-OFF keying. The dashed line area in FIG. 7 indicates an OFF section, which may correspond to information (bit) "0." A sine wave signal may correspond to information "1."

[0042] Hereinafter, a network may include a base station, a support node, an intermediate node, and a terminal (UE in Topology 4). Hereinafter, the base station, the support node, the intermediate node, the relay, and the terminal may be referred to as network nodes. Ambient IoT may be referred to as A-IoT.

[0043] The A-IoT as described above has been raised as a topic of 3GPP Rel-19. The following items are being considered for A-IoT. In the following, an ambient IoT device is referred to as an ambient IoT UE, and an ambient IoT UE is referred to as an A-IoT UE. In the following description, a base station may be replaced with other terms such as BS or gNB.

[0044] <Traffic Flow> The following DT and DO-DTT are being considered as traffic flows for A-IoT. DT (device terminated): As traffic, there is no transmission from the A-IoT UE, but there is information transmitted to the A-IoT UE. For example, DT corresponds to a command type in which there is an instruction (e.g., an instruction or command) to the A-IoT UE. DO-DTT (device originated - device terminated triggered): As traffic, there is a trigger from the NW (network, e.g., a base station). Also, as traffic, there is information transmission from the A-IoT UE. Also, for example, DO-DTT may also include information transmission to the A-IoT UE. For example, DO-DTT corresponds to a sensor information report type in which sensor information is collected from the A-IoT UE.

[0045] In this embodiment, transmission of information corresponds to transmission of a signal containing information, or transmission of a signal. In this embodiment, transmission to a certain device X corresponds to transmission of a signal (or information) to device X. In addition, transmission from a certain device X and transmission by a certain device X correspond to device X transmitting a signal (or information). In addition, reception from a certain device X corresponds to receiving a signal (or information) transmitted by device X. In addition, reception by a certain device X corresponds to device X receiving a signal (or information).

[0046] <Device Assumptions> The following assumptions may be made for devices such as A-IoT UEs: - Transmission (TX) is backscattered UL (uplink) transmission without an amplifier, or general UL transmission with an amplifier. - FR (frequency range) 1-FDD is applied. That is, the A-IoT UE can switch carrier frequencies between DL (downlink) carriers and UL (uplink) carriers.

[0047] The frequency bands of each FR are, for example, as follows: FR1: 410 MHz to 7.125 GHz FR2: 24.25 GHz to 52.6 GHz

[0048] FR1 may use a sub-carrier spacing (SCS) of 15 kHz, 30 kHz, or 60 kHz, and a bandwidth (BW) of 5 to 100 MHz. FR2 is a higher frequency than FR1, and may use an SCS of 60 kHz or 120 kHz (including 240 kHz), and a bandwidth (BW) of 50 to 400 MHz.

[0049] <Topology> Among the topologies shown in FIGS. 2 to 6, attention is focused on Topology 1 and Topology 2.

[0050] In Topology 1, UL and / or DL ​​communication is performed between a base station and an A-IoT UE. Note that the base station in Topology 1 may correspond to a microcell.

[0051] In Topology 2, a base station and an A-IoT UE communicate via an intermediate node. The A-IoT UE performs bidirectional communication with an intermediate node located between the base station and the A-IoT UE. Hereinafter, the intermediate node will be referred to as an int. UE (intermediate UE). The case of Topology 2 may also be applied to indoor cases. Furthermore, the base station in the case of Topology 2 may correspond to a macrocell.

[0052] The signal design for A-IoT UEs may be common between Topology 1 and Topology 2 described above.

[0053] <Considerations> Figure 8 is a diagram showing the case of DT in Topology 2. Figure 8 shows the signal flow between the base station (gNB), int. UE, and A-IoT UE. Note that since this is the case of DT in Topology 2, there is information transmission to the A-IoT UE, but there is no information transmission from the A-IoT UE.

[0054] Figure 9 is a diagram showing the case of DO-DTT in topology 2. Figure 9 shows the signal flow between the base station (gNB), int. UE, and A-IoT UE. Note that since this is the case of DO-DTT in topology 2, there is information transmission to the A-IoT UE and information transmission from the A-IoT UE.

[0055] As shown in Figures 8 and 9, when Topology 2 is applied, the int. UE transmits information to the base station. Here, information transmitted from the int. UE to the base station may be referred to as a "report." Also, the operation of the int. UE transmitting information to the base station may be referred to as a "report."

[0056] The transmission of information (e.g., reporting) by the UE to the base station is an area for discussion.

[0057] If the content reported by the int. UE to the base station is inappropriate, the base station will be unable to properly perform the next operation (e.g., the next information transmission to the int. UE, etc.), which will reduce the efficiency of the operation of the entire system. Furthermore, if the content reported by the int. UE to the base station is redundant, the resources used for the int. UE's information transmission (e.g., reporting) will increase, and the overhead will increase. Furthermore, if the resources used for reporting from the int. UE to the base station, the timing of the report, etc., are inappropriate, the base station will be unable to properly perform the next operation (e.g., the next information transmission), which will reduce the efficiency of the operation of the entire system.

[0058] Therefore, in this embodiment, a report from an int. UE to a base station will be described. Below, the report made from an int. UE to a base station will be described in two main cases, DT and DO-DTT.

[0059] A. DT Case In Topology 2, in the DT case, the int. UE sends a report to the base station.

[0060] <A1. Report Timing in the DT Case> The report timing (e.g., slots to be used for reporting, etc.) is instructed by the base station. Alternatively, the report timing is configured by the base station. Hereinafter, the instruction and / or configuration may be referred to as "instruction / configuration."

[0061] The indication / setting of the report timing may be included in a DCI (e.g., a scheduling DCI) that schedules transmission from the int. UE to the A-IoT UE, or may be included in a DCI (e.g., a triggering DCI) that triggers transmission from the int. UE to the A-IoT UE. Alternatively, the indication / setting of the report timing may be included in a MAC-CE. Alternatively, the indication / setting of the report timing may be performed via RRC signaling.

[0062] The indication / setting of the report timing may be performed by a combination of two or more of the DCI, the MAC CE, and the RRC signaling. For example, one or more report timings may be set by the RRC signaling, and at least one of the set report timings may be indicated by the DCI.

[0063] The reporting timing (e.g., slots to use for reporting) is determined based on at least one of the following: Timing of schedule / trigger of transmission from int. UE to A-IoT UE Timing of transmission from int. UE to A-IoT UE

[0064] The timing of scheduling / triggering transmission from the int. UE to the A-IoT UE may be the timing of receiving information for scheduling / triggering (e.g., DCI) from the base station.

[0065] The int. UE generates a signal for reporting (hereinafter referred to as a report signal) based on the report timing. For example, the int. UE generates a report signal based on whether the following option 1 or option 2 is applied. Option 1: The report is transmitted after the int. UE receives an instruction (e.g., a trigger) to transmit to the A-IoT UE and before transmitting to the A-IoT UE. Option 2: The report is transmitted after the int. UE transmits to the A-IoT UE.

[0066] It is assumed that the int. UE is guaranteed whether the base station will apply the above-mentioned option 1 or option 2 with respect to the reporting timing. For example, it is assumed that the int. UE is specified to use either option 1 or option 2 with respect to the reporting timing. In other words, the int. UE knows in advance whether the base station will apply the above-mentioned option 1 or option 2 with respect to the reporting timing.

[0067] Regarding the reporting timing, the processing time of the int. UE may be guaranteed.

[0068] For example, in the case of the above Option 1, the time gap between receiving the indication and transmitting the report may be determined based on a time-related parameter (e.g., denoted as Tmin). For example, the time gap between receiving the indication and transmitting the report may be set to a gap equal to the parameter Tmin, a gap equal to or greater than the parameter Tmin, or a gap greater than the parameter Tmin. The parameter Tmin is an example of a parameter that guarantees the processing time of the int. UE in Option 1.

[0069] For example, in the above-mentioned Option 2, the time gap between the transmission to the A-IoT UE and the transmission of the report may be determined based on a time-related parameter (e.g., denoted as T'min). The time gap between the transmission to the A-IoT UE and the transmission of the report may be set to a gap equal to the parameter T'min, a gap equal to or greater than the parameter T'min, or a gap greater than the parameter T'min. The parameter T'min is an example of a parameter that guarantees the processing time of the int. UE in Option 2.

[0070] The int. UE may report its capability regarding its processing time to the base station.

[0071] FIG. 10 is a diagram showing an example of a correspondence relationship regarding report timing in the case of DT. Similar to FIG. 8, FIG. 10 shows the signal flow between a base station (gNB), an int. UE, and an A-IoT UE. In the example of FIG. 10, the instruction / setting of the report timing is included in the DCI (e.g., scheduling DCI or triggering DCI) transmitted from the base station. Also, in the example of FIG. 10, the above-mentioned option 2 is applied. That is, in the example of FIG. 10, the report is transmitted after the int. UE has transmitted to the A-IoT UE. Also, in the example of FIG. 10, the time gap between the transmission to the A-IoT UE and the transmission of the report is set to a gap equal to the parameter T'min.

[0072] <A2. Channels and / or resources used for reporting in DT cases> Reporting may be performed via PUCCH or PUSCH (e.g., PHY / MAC (Medium Access Control) / RRC (Radio Resource Control)), PRACH, or SRS (Sounding Reference Signal). Alternatively, reporting may be performed via a channel and / or signal dedicated to reporting.

[0073] Which resources are used for reporting is indicated / configured by the base station, in other words, the reporting resources are indicated / configured by the base station.

[0074] The indication / configuration of the reporting resources may be included in a DCI (e.g., a scheduling DCI) that schedules transmission from the int. UE to the A-IoT UE, or may be included in a DCI (e.g., a triggering DCI) that triggers transmission from the int. UE to the A-IoT UE. Alternatively, the indication / configuration of the reporting resources may be included in a MAC-CE. Alternatively, the indication / configuration of the reporting resources may be performed via RRC signaling.

[0075] The indication / configuration of the reporting resources may be performed by a combination of two or more of the DCI, the MAC CE, and the RRC signaling. For example, one or more reporting resources may be configured by the RRC signaling, and at least one of the configured reporting resources may be indicated by the DCI.

[0076] <A3. Contents of report in case of DT> The report from the int. UE to the base station may include a hybrid automatic repeat request (HARQ)-ACK (acknowledgement). For example, it includes information indicating at least one of the following three items: - Information indicating whether the int. UE has successfully received the trigger - Information indicating whether the int. UE has succeeded or failed in transmitting to the A-IoT UE - Information indicating whether the int. UE will or will not transmit to the A-IoT UE

[0077] In addition, the int. UE not transmitting to the A-IoT UE may correspond to the cancellation of the transmission to the A-IoT UE. For example, the cancellation of the transmission to the A-IoT UE occurs when some condition is not satisfied or satisfied. Illustratively, the cancellation of the transmission to the A-IoT UE occurs when the measured channel information (e.g., RSRP (Reference Signal Received Power)) does not satisfy a specified condition (e.g., exceeding or falling below a set RSRP threshold).

[0078] The report here may include information other than HARQ-ACK. Also, the above-mentioned report content may be defined as information other than HARQ-ACK.

[0079] <A4. Power Control in Reporting in the DT Case> In A-IoT, open loop power control (OLPC) and closed loop power control (CLPC) are being considered. Information related to power control (e.g., information related to OLPC and / or CLPC) is instructed / set by the base station. Note that the above-mentioned power control may be power control related to reporting from the int. UE to the base station. Alternatively, it may be power control related to transmission from the int. UE to the A-IoT UE.

[0080] As described above, in the case of DT, the int. UE can perform an appropriate report by appropriately setting at least one of the report timing, channel / resource, content, and power, etc., using the above-mentioned method. For example, the int. UE can perform a report including appropriate report timing and / or appropriate content, allowing the base station to control subsequent operations and improving the efficiency of the operation of the entire system. Furthermore, for example, the int. UE can suppress an increase in resources used for reporting and / or an increase in overhead by performing a report using appropriate resources.

[0081] B. DO-DTT Case In Topology 2, in the DO-DTT case, the int. UE sends a report to the base station.

[0082] <B1. Report Timing in the Case of DO-DTT> The report timing (for example, the slot used for reporting) is instructed / set by the base station.

[0083] The indication / setting of the report timing may be included in a DCI (e.g., a scheduling DCI) that schedules transmission from the int. UE to the A-IoT UE, or may be included in a DCI (e.g., a triggering DCI) that triggers transmission from the int. UE to the A-IoT UE. Alternatively, the indication / setting of the report timing may be included in a MAC-CE. Alternatively, the indication / setting of the report timing may be performed via RRC signaling.

[0084] The indication / setting of the report timing may be performed by a combination of two or more of the DCI, the MAC CE, and the RRC signaling. For example, one or more report timings may be set by the RRC signaling, and at least one of the set report timings may be indicated by the DCI.

[0085] The reporting timing (e.g., slots to use for reporting) is determined based on at least one of the following: Timing of schedule / trigger of transmission from int. UE to A-IoT UE Timing of transmission from int. UE to A-IoT UE Timing of receiving signal from int. UE

[0086] The timing of scheduling / triggering transmission from the int. UE to the A-IoT UE may be the timing of receiving information for scheduling / triggering (e.g., DCI) from the base station.

[0087] The int. UE generates a signal for reporting (hereinafter referred to as a report signal) based on the report timing. For example, the int. UE generates a report signal based on whether the following option 1, option 2, or option 3 is applied. Option 1: The report is transmitted after the int. UE receives an instruction to transmit to the A-IoT UE and before transmitting to the A-IoT UE. Option 2: The report is transmitted after the int. UE transmits to the A-IoT UE and before receiving from the A-IoT UE. Option 3: The report is transmitted after the int. UE receives from the A-IoT UE.

[0088] It is assumed that the int. UE is guaranteed which of the above Option 1, Option 2, and Option 3 the base station will apply with respect to the reporting timing. For example, it is assumed that the int. UE is specified with respect to the reporting timing as one of the above Option 1 to Option 3. In other words, the int. UE knows in advance which of the above Option 1 to Option 3 the base station will apply with respect to the reporting timing.

[0089] Regarding the reporting timing, the processing time of the int. UE may be guaranteed.

[0090] For example, in the case of the above Option 1, the time gap between receiving the indication and transmitting the report may be determined based on a time-related parameter (e.g., denoted as Tmin). For example, the time gap between receiving the indication and transmitting the report may be set to a gap equal to the parameter Tmin, a gap equal to or greater than the parameter Tmin, or a gap greater than the parameter Tmin. The parameter Tmin is an example of a parameter that guarantees the processing time of the int. UE in Option 1.

[0091] For example, in the above-mentioned Option 2, the time gap between the transmission to the A-IoT UE and the transmission of the report may be determined based on a time-related parameter (e.g., denoted as T'min). The time gap between the transmission to the A-IoT UE and the transmission of the report may be set to a gap equal to the parameter T'min, a gap equal to or greater than the parameter T'min, or a gap greater than the parameter T'min. The parameter T'min is an example of a parameter that guarantees the processing time of the int. UE in Option 2.

[0092] For example, in the case of Option 3 above, the time gap between receiving from the A-IoT UE and transmitting the report may be determined based on a time-related parameter (e.g., denoted as T''min). The time gap between receiving from the A-IoT UE and transmitting the report may be set to a gap equal to the parameter T''min, a gap equal to or greater than the parameter T''min, or a gap greater than the parameter T''min. The parameter T''min is an example of a parameter that guarantees the processing time of the int. UE in Option 3.

[0093] The int. UE may report its capability regarding its processing time to the base station.

[0094] FIG. 11 is a diagram showing an example of a correspondence relationship regarding report timing in the case of DO-DTT. Similar to FIG. 9, FIG. 11 shows the signal flow between a base station (gNB), an int. UE, and an A-IoT UE. In the example of FIG. 11, the instruction / setting of the report timing is included in the DCI (e.g., scheduling DCI or triggering DCI) transmitted from the base station. Also, in the example of FIG. 11, the above-mentioned option 3 is applied. That is, in the example of FIG. 11, the report is transmitted after the int. UE has received from the A-IoT UE. Also, in the example of FIG. 11, the time gap between transmission to the A-IoT UE and transmission of the report is set to a gap equal to the parameter T''min.

[0095] B2. Channels and / or Resources Used for Reporting in the DO-DTT Case Reporting may be performed via PUCCH or PUSCH (e.g., any of PHY / MAC / RRC), PRACH, or SRS, or alternatively, via channels and / or signals dedicated to reporting.

[0096] Which resources are used for reporting is indicated / configured by the base station, in other words, the reporting resources are indicated / configured by the base station.

[0097] The indication / configuration of the reporting resources may be included in a DCI (e.g., a scheduling DCI) that schedules transmission from the int. UE to the A-IoT UE, or may be included in a DCI (e.g., a triggering DCI) that triggers transmission from the int. UE to the A-IoT UE. Alternatively, the indication / configuration of the reporting resources may be included in a MAC-CE. Alternatively, the indication / configuration of the reporting resources may be performed via RRC signaling.

[0098] The indication / configuration of the reporting resources may be performed by a combination of two or more of the DCI, the MAC CE, and the RRC signaling. For example, one or more reporting resources may be configured by the RRC signaling, and at least one of the configured reporting resources may be indicated by the DCI.

[0099] <B3. Contents of Report in the Case of DO-DTT> The report from the UE to the base station includes at least one of the following B3a to B3g.

[0100] (B3a): HARQ-ACK For example, information indicating at least one of the following three items is included. Note that this information may be defined as information other than HARQ-ACK. - Information indicating whether the int. UE has successfully received the trigger - Information indicating whether the int. UE has succeeded or failed in transmitting to the A-IoT UE - Information indicating whether the int. UE will or will not transmit to the A-IoT UE - Information indicating whether the int. UE has succeeded or failed in receiving from the A-IoT UE - Information indicating whether the int. UE will or will not receive from the A-IoT UE

[0101] In addition, the int. UE not transmitting to the A-IoT UE may correspond to the cancellation of the transmission to the A-IoT UE. For example, the cancellation of the transmission to the A-IoT UE occurs when some condition is not satisfied or satisfied. Illustratively, the cancellation of the transmission to the A-IoT UE occurs when the measured channel information (e.g., RSRP) does not satisfy a specified condition (e.g., above or below a set RSRP threshold).

[0102] Furthermore, the int. UE not receiving from the A-IoT UE may correspond to the cancellation of reception from the A-IoT UE. For example, the cancellation of reception from the A-IoT UE occurs when some condition is not met or met. Illustratively, if the processing priority (prioritization) does not satisfy a specified condition (for example, if the priority of reception from the A-IoT is lower than a threshold, or if it is lower than the priority related to a transmission other than reception from the A-IoT, or if it is lower than the priority related to a reception other than reception from the A-IoT), the cancellation of reception from the A-IoT UE occurs. Note that transmission other than reception from the A-IoT is, for example, transmission performed by the int. UE to the A-IoT or a base station. Furthermore, reception other than reception from the A-IoT may be, for example, reception from a base station performed by the int. UE.

[0103] (B3b): Information Received from A-IoT UE For example, the int. UE extracts information from the signal received from the A-IoT UE and generates a report signal including the extracted information.

[0104] (B3c): Information indicating which A-IoT UE has responded. For example, the information received from the A-IoT UE includes identification information (e.g., ID) that identifies the A-IoT UE that sent the response. The report from the int. UE to the base station may include the ID included in the information received by the int. UE.

[0105] (B3d): Information indicating the number of A-IoT UEs that responded For example, the information received from the A-IoT UE includes identification information (e.g., ID) that identifies the A-IoT UE that sent the information. In the report from the int. UE to the base station, the number of IDs included in the information received by the int. UE may be included in the report as information indicating the number of A-IoT UEs that responded. Alternatively, the number of received signals may be included in the report as information indicating the number of A-IoT UEs that responded.

[0106] (B3e): Reception quality (e.g., RSRP) of a signal received from an A-IoT UE. The int. UE measures the reception quality when receiving a signal from the A-IoT UE, and the measurement result may be included in a report from the int. UE to the base station. For example, the reception quality may be reported in association with the A-IoT UE that is the sender of the signal being measured.

[0107] (B3f): Copy of Received Signal from A-IoT UE The int. UE may receive a signal from the A-IoT UE and include a copy of the received signal in a report from the int. UE to the base station. In this case, the int. UE does not need to perform processing (e.g., demodulation, decoding, etc.) to extract information from the signal from the A-IoT UE.

[0108] (B3g): Restricted Information from A-IoT UE For example, if an upper limit is set on the amount of information reported from an int. UE to a base station, the int. UE may limit and report the information received from the A-IoT UE. For example, if an int. UE receives signals from N A-IoT UEs (N is an integer equal to or greater than 1), and N is greater than Nmax, the int. UE may select signals from Nmax A-IoT UEs for reporting from the signals from the N A-IoT UEs. The int. UE may then report information on the selected signals (e.g., signals from Nmax A-IoT UEs) to the base station. Here, Nmax is an integer equal to or greater than 1 and is a parameter indicating an upper limit on reporting. Nmax may be reported as the capability of the int. UE. Furthermore, Nmax may be set by the base station. Note that the value of Nmax set by the base station may be different from the value reported as int. UE capability.

[0109] Note that the above-mentioned B3a to B3g may be combined as appropriate or used selectively. For example, information received from an A-IoT UE may be reported in association with information indicating which A-IoT UE has responded. Alternatively, one of B3a to B3g may imply other information. For example, information indicating which A-IoT UE has responded may imply the number of A-IoT UEs that have responded.

[0110] <B4. Power Control in Reporting in the Case of DO-DTT> In A-IoT, open loop power control (OLPC) and closed loop power control (CLPC) are being considered. Information related to power control (e.g., information related to OLPC and / or CLPC) is instructed / set by the base station. Note that the above-mentioned power control may be power control related to reporting from the int. UE to the base station. Alternatively, it may be power control related to transmission from the int. UE to the A-IoT UE.

[0111] As described above, in the case of DO-DTT, the int. UE can perform appropriate reporting by appropriately setting at least one of the report timing, channel / resource, content, and power, etc., using the above-mentioned method. For example, the int. UE can perform a report including appropriate report timing and / or appropriate content, allowing the base station to control subsequent operations and improving the efficiency of the operation of the entire system. Furthermore, for example, the int. UE can suppress an increase in resources used for reporting and / or an increase in overhead by performing a report using appropriate resources.

[0112] <C. UE Capability> For example, a UE capable of int. UE may notify information indicating that it has int. UE capability as UE capability. Note that a UE capable of int. UE may also be referred to as a UE that supports int. UE operation or a UE that can become an int. UE.

[0113] A UE having int. UE capability may notify information indicating whether or not the reporting operation in A-IoT is possible. Note that the information indicating whether or not the UE has int. UE capability and the information indicating whether or not the UE is capable of reporting operation in A-IoT may be notified by different signaling. For example, when a UE having int. UE capability is capable of reporting operation in A-IoT, the information indicating that the UE has int. UE capability and the information indicating that the UE is capable of reporting operation in A-IoT may be different signaling. Note that in this case, there may be cases where a UE having int. UE capability is not capable of reporting operation in A-IoT. In cases where a UE having int. UE capability is not capable of reporting operation in A-IoT, the UE may notify information indicating that the UE is int. Information indicating that the UE has the capability and information indicating that the UE is not capable of reporting operations in A-IoT are notified by separate signaling.

[0114] A UE capable of int. UE supports reporting operations in A-IoT. In this case, there is no case in which a UE capable of int. UE is not capable of reporting operations in A-IoT. In addition, in this case, information indicating whether a UE has int. UE capability and information indicating whether the UE is capable of reporting operations in A-IoT may be notified by common signaling. For example, information indicating that a UE has int. UE capability indicates that the UE is capable of reporting operations in A-IoT. Also, for example, information indicating that a UE cannot become an int. UE indicates that the UE is not capable of reporting operations in A-IoT.

[0115] D. Variations Reporting from the UE to the base station may be performed only in the DO-DTT case, and not in the DT case.

[0116] The behavior of the int. UE (e.g. timing constraints, timing instructions) may be similar to the behavior for sidelink (SL) HARQ feedback with at least one of the following updates: - Update from "Physical SL feedback channel (PSFCH)" to "A-IoT UE sending (int. UE receiving)" - Update from "HARQ-ACK" to "information for reporting content" - Update from "PUCCH" to "other channel (e.g. PUSCH, etc.)"

[0117] The report from the int. UE to the base station may be made multiple times for one transmission of the int. UE or one reception of the int. UE.

[0118] For a single transmission from an int. UE to one or more A-IoT UEs, a report from the int. UE to the base station may be performed in multiple transmissions. For example, the single transmission from the int. UE to one or more A-IoT UEs may be broadcast or multicast. For a single transmission from the int. UE to one or more A-IoT UEs, a report from the int. UE to the base station may be performed for each A-IoT UE or for multiple A-IoT UEs. For example, if the int. UE broadcasts to unspecified A-IoT UEs and receives responses from eight A-IoT UEs, a report may be performed for each of the eight A-IoT UEs (i.e., eight reports), or a report may be performed for each set of four A-IoT UEs (i.e., two reports).

[0119] In addition, for multiple reports from the int. UE to the base station, the above-mentioned <B1>, <B2>, <B3>, and <B4> may be applied to each of the multiple reports. For example, the report timing (e.g., the above-mentioned <B1>) may be determined for each of the multiple reports. Furthermore, the resource / channel used for the report (e.g., the above-mentioned <B2>) may be determined for each of the multiple reports. Furthermore, the content of the report (e.g., the above-mentioned <B3>) and the power control in the report (e.g., the above-mentioned <B4>) may also be determined for each of the multiple reports.

[0120] Furthermore, the report from the int. UE to the base station may be performed for multiple transmissions from the int. UE (for example, multiple transmissions when a series of transmissions is considered one transmission). Note that the transmission from the int. UE here corresponds to the int. UE transmitting to the A-IoT UE. Note that the multiple transmissions from the int. UE may be to the same A-IoT UE, or may be to two or more different A-IoT UEs.

[0121] Figure 12 is a diagram showing a first example of a report flow for multiple transmissions from an int. UE. Figure 13 is a diagram showing a second example of a report flow for multiple transmissions from an int. UE. Figures 12 and 13 show the flow of signals between a base station (gNB), an int. UE, and an A-IoT UE. Note that in Figures 12 and 13, one arrow may include multiple transmissions. For example, an arrow representing a transmission from an int. UE to an A-IoT UE may include multiple transmissions.

[0122] In the example of Fig. 12, an instruction / setting of the report timing etc. is included in at least one DCI (e.g., a scheduling DCI or a triggering DCI) of two transmissions from the base station. Also, in the example of Fig. 12, one report is made for two transmissions from the base station and / or two transmissions from the int. UE.

[0123] In the example of Fig. 13, an instruction / setting such as a report timing is included in a DCI (e.g., a scheduling DCI or a triggering DCI) transmitted by a base station. Also, in the example of Fig. 13, one report is made for one transmission by the base station and / or two transmissions by an int. UE.

[0124] As illustrated in Figures 12 and 13, a report may be made from an int. UE to a base station for multiple transmissions from the int. UE to one or more A-IoT UEs. In this case, each report may be associated with one transmission from the int. UE to one or more A-IoT UEs, or may be associated with multiple transmissions from the int. UE to one or more A-IoT UEs. For example, if eight transmissions are made from an int. UE to an A-IoT UE, a report may be made for each of the eight transmissions (i.e., eight reports), or a report may be made for every four transmissions to the A-IoT UE (i.e., two reports).

[0125] When a report is made from an int. UE to a base station for multiple transmissions from the int. UE to one or more A-IoT UEs, each report may be associated with one reception from the A-IoT UE or multiple receptions from the A-IoT UE, where a reception from the A-IoT UE corresponds to the int. UE receiving a signal transmitted from the A-IoT UE.

[0126] Furthermore, the report from the int. UE to the base station may be made in response to multiple receptions from the A-IoT UE. Here, reception from the A-IoT corresponds to the int. UE receiving a signal transmitted from the A-IoT UE. Note that the multiple receptions from the A-IoT UE may be receptions from the same A-IoT UE, or may be receptions from two or more different A-IoT UEs.

[0127] When a report is made from an int. UE to a base station for multiple receptions from an A-IoT UE, each report may be associated with a single reception from the A-IoT UE or multiple transmissions from the A-IoT UE.

[0128] In the above-described embodiment, the A-IoT UE may report a capability indicating at least one of whether Topology 1 is applicable, whether Topology 2 is applicable, whether DT is applicable, and whether DO-DTT is applicable.

[0129] In the above-described embodiment, the int. UE may report a capability indicating at least one of whether DT is applicable or whether DO-DTT is applicable or not.

[0130] Next, the configurations of the base station 10 and the device 20 will be described. Note that the configurations of the base station 10 and the device 20 described below are examples of functions related to this embodiment. The base station 10 and the device 20 may have functions not shown. Furthermore, the functional divisions and / or names of the functional units are not limited as long as the functions perform the operations related to this embodiment.

[0131] <Configuration of Base Station> Fig. 14 is a block diagram showing an example of the configuration of a base station 10 according to an embodiment. The base station 10 includes, for example, a transmitting unit 101, a receiving unit 102, and a control unit 103. The base station 10 communicates with a device 20 (see Fig. 15) wirelessly.

[0132] The transmitter 101 transmits a downlink (DL) signal to the device 20. For example, the transmitter 101 transmits the DL signal under the control of the controller 103.

[0133] The DL signal may include, for example, a downlink data signal and control information (e.g., DCI (Downlink Control Information)). The DL signal may also include information indicating scheduling related to signal transmission of the device 20 (e.g., an UL grant). The DL signal may also include control information of higher layers (e.g., control information of RRC (Radio Resource Control)). The DL signal may also include a reference signal.

[0134] The channels used for transmitting DL signals include, for example, a data channel and a control channel. For example, the data channel may include a PDSCH (Physical Downlink Shared Channel), and the control channel may include a PDCCH (Physical Downlink Control Channel). For example, the base station 10 transmits control information to the device 20 using the PDCCH and transmits downlink data signals using the PDSCH.

[0135] The reference signal included in the DL signal may include at least one of, for example, a Demodulation Reference Signal (DMRS), a Phase Tracking Reference Signal (PTRS), a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS) for position information. For example, reference signals such as the DMRS and PTRS are used for demodulating downlink data signals and are transmitted using the PDSCH.

[0136] The receiving unit 102 receives an uplink (UL) signal transmitted from the device 20. For example, the receiving unit 102 receives the UL signal under the control of the control unit 103.

[0137] The control unit 103 controls the communication operations of the base station 10, including the transmission processing of the transmission unit 101 and the reception processing of the reception unit 102. The control unit 103 performs operations other than the transmission and reception described in the above embodiment (note that these operations may be performed by the transmission unit 101 and / or the reception unit 102).

[0138] For example, the control unit 103 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 101. The control unit 103 also outputs the data, control information, etc. received from the receiving unit 102 to the upper layer.

[0139] For example, the control unit 103 allocates resources (or channels) used for transmitting and receiving DL signals and / or resources used for transmitting and receiving UL signals based on signals (e.g., data and control information, etc.) received from the device 20, etc. and / or data and control information, etc. acquired from a higher layer. Information on the allocated resources may be included in control information transmitted to the device 20.

[0140] Here, the transmitting unit 101 and the receiving unit 102 (which may be collectively referred to as a communication unit) communicate with the device 20 .

[0141] In the case of Topology 2, an intermediate node (for example, the above-mentioned int.UE, an example of a device) that relays between the base station 10 and the device 20 exists. In this case, the transmitter 101 may transmit a DL signal to the device 20 via the intermediate node, and the receiver 102 may receive a UL signal from the device 20 via the intermediate node. In this case, the transmitter 101 may transmit a trigger (or an instruction) to the intermediate node, and the receiver 102 may receive a signal (for example, a report) from the intermediate node.

[0142] Also, for example, in the case of DO-DTT in Topology 1, the receiver 102 may receive a signal (or information) from the device 20. In the case of Topology 2, the receiver 102 may receive a signal (or information) from an intermediate node (e.g., the int.UE described above) between the base station 10 and the device 20.

[0143] <Device Configuration> Fig. 15 is a block diagram showing an example of the configuration of the device 20 according to the embodiment. The device 20 includes, for example, a receiving unit 201, a transmitting unit 202, and a control unit 203. The device 20 communicates with, for example, the base station 10 wirelessly. The device 20 may be, for example, an A-IoT device or an A-IoT UE.

[0144] The receiving unit 201 receives a DL signal transmitted from the base station 10. For example, the receiving unit 201 receives the DL signal under the control of the control unit 203.

[0145] The transmitting unit 202 transmits the UL signal to the base station 10. For example, the transmitting unit 202 transmits the UL signal under the control of the control unit 203.

[0146] The UL signal may include, for example, an uplink data signal and control information (e.g., UCI (Uplink Control Information)). For example, information related to the processing capability of the device 20 (e.g., A-IoT capability) may be included. The UL signal may also include a reference signal.

[0147] The channels used for transmitting UL signals include, for example, a data channel and a control channel. For example, the data channel may include a PUSCH (Physical Uplink Shared Channel), and the control channel may include a PUCCH (Physical Uplink Control Channel). For example, the device 20 transmits control information from the base station 10 using the PUCCH and transmits uplink data signals using the PUSCH.

[0148] The reference signal included in the UL signal may include, for example, at least one of a DMRS, a PTRS, a CSI-RS, an SRS, and a PRS. For example, the reference signal such as the DMRS or the PTRS is used for demodulating an uplink data signal and is transmitted using an uplink channel (for example, a PUSCH).

[0149] The control unit 203 controls communication operations of the device 20, including reception processing in the receiving unit 201 and transmission processing in the transmitting unit 202. For example, the control unit 203 performs operations other than the transmission and reception described in the above embodiment (note that these operations may be performed by the receiving unit 201 and / or the transmitting unit 202).

[0150] For example, the control unit 203 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 202. Also, the control unit 203 outputs, for example, the data and control information received from the receiving unit 201 to the upper layer.

[0151] Note that the channel used for transmitting the DL signal and the channel used for transmitting the UL signal are not limited to the above-mentioned examples. For example, the channel used for transmitting the DL signal and the channel used for transmitting the UL signal may include a Random Access Channel (RACH) and a Physical Broadcast Channel (PBCH). The RACH may be used to transmit DCI including a Random Access Radio Network Temporary Identifier (RA-RNTI), for example.

[0152] Here, the receiving unit 201 and the transmitting unit 202 (which may be collectively referred to as a communication unit) communicate with a network such as the base station 10. Note that the transmitting unit 202 does not necessarily have to be included in the device 20.

[0153] In the case of Topology 2, there is an intermediate node (for example, the above-mentioned int.UE, an example of a device) that relays between the base station 10 and the device 20. In this case, the transmitter 202 may transmit a UL signal to the base station 10 via the intermediate node, and the receiver 201 may receive a DL signal from the base station 10 via the intermediate node.

[0154] In the case of DT, the transmitter 202 does not transmit a signal to the base station 10 or an intermediate node. In this case, the device 20 may not have the transmitter 202.

[0155] In the case of DO-DTT in Topology 1, the transmitter 202 may transmit a signal to the base station 10. In the case of DO-DTT in Topology 2, the transmitter 202 may transmit a signal to an intermediate node (e.g., the int.UE described above) between the base station 10 and the device 20.

[0156] 16 is a block diagram showing an example of the configuration of the intermediate node 30 according to the embodiment. The intermediate node 30 (for example, the above-mentioned int.UE, an example of a device) relays between the base station 10 and the device 20 in Topology 2. Note that in the case of Topology 1, the intermediate node 30 does not need to be included in the wireless communication system according to the embodiment. The intermediate node 30 includes, for example, a receiving unit 301, a transmitting unit 302, and a control unit 303.

[0157] The receiving unit 301 receives a signal transmitted from the base station 10. In the case of DO-DTT, the receiving unit 301 receives a signal transmitted from the device 20. For example, the receiving unit 301 receives the signal under the control of the control unit 303.

[0158] The transmitting unit 302 transmits a signal to the base station 10. The transmitting unit 302 also transmits a signal to the device 20. For example, the transmitting unit 302 transmits a signal under the control of the control unit 303.

[0159] The control unit 303 controls the communication operations of the intermediate node 30, including the reception processing in the receiving unit 301 and the transmission processing in the transmitting unit 302. For example, the control unit 303 performs operations other than the transmission and reception described in the above embodiment (note that these operations may be performed by the receiving unit 301 and / or the transmitting unit 302).

[0160] The control unit 303 generates a report to the base station 10. Furthermore, the control unit 303 performs at least one of controlling the timing of the report, setting the channel / resource to be used for the report, determining the content of the report, and controlling the power of the report, based on one of the methods described above.

[0161] The intermediate node 30 (an example of a first device) relays between the base station 10 and a device 20 (an example of a second device) that is less complex than a Narrow Band Internet of Things (NB-IoT) device. The control unit 303 generates a report to be transmitted to the base station 10. The transmission unit 302 transmits the report to the base station 10.

[0162] The receiver 301 of the intermediate node 30 receives an instruction (e.g., a trigger) from the base station 10. Then, the transmitter 302 transmits information to the device 20 based on the instruction, and transmits a report after the receiver 301 receives the instruction and before the transmitter 302 transmits the information to the device 20, or after the transmitter 302 transmits the information to the device 20.

[0163] The control unit 303 controls the time from when the receiving unit 301 receives an instruction to when the transmitting unit 302 transmits information to the device 20 based on time-related parameters (for example, at least one of the above-mentioned Tmin, T'min, and T''min).

[0164] Note that in the above description, the terms DL and UL are merely examples, and the present disclosure is not limited thereto. Transmission from the intermediate node 30 to the base station 10 may or may not be referred to as UL transmission. Transmission from the base station 10 to the intermediate node 30 may or may not be referred to as DL transmission. Transmission from the intermediate node 30 to the device 20 may or may not be referred to as DL transmission. Transmission from the device 20 to the intermediate node 30 may or may not be referred to as UL transmission.

[0165] The present disclosure has been described above. Note that the division of items in the above description is not essential to the present disclosure, and items described in two or more items may be used in combination as needed, and items described in one item may be applied to items described in another item (unless they are inconsistent).

[0166] <Hardware Configuration, etc.> The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (e.g., using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining software with the single device or the multiple devices.

[0167] Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0168] For example, a base station, a device, 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, a device, and an intermediate node according to an embodiment. The above-described base station 10, device 20, and intermediate node may be physically configured as a computer 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.

[0169] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configurations of the base station 10, the device 20, and the intermediate node 30 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0170] Each function in the base station 10, the device 20, and the intermediate node 30 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and the memory 1002, causing the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0171] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 103, control unit 203, and control unit 303 may be realized by the processor 1001.

[0172] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of 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 103 of the base station 10, the control unit 203 of the device 20, and the control unit 303 of the intermediate node 30 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similarly may be implemented for other functional blocks. While the above-described various processes have been described as being executed by one 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 also be transmitted from a network via a telecommunications line.

[0173] The memory 1002 is a computer-readable recording medium and may be configured by, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0174] Storage 1003 is a computer-readable recording medium, and may be composed of at least one of, 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 (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of memory 1002 and storage 1003.

[0175] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitter 101, receiver 102, receiver 201, transmitter 202, receiver 301, transmitter 302, etc. may be realized by the communication device 1004.

[0176] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0177] Furthermore, each device, such as the processor 1001 and the memory 1002, is 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 each device.

[0178] Furthermore, the base station 10, the device 20, and the intermediate node 30 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), or a field programmable gate array (FPGA), 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.

[0179] <Notification of Information, Signaling> Notification of information is not limited to the embodiments described in the present disclosure and may be performed using other methods. For example, notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), 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), System Information Block (SIB))), other signals, or a combination thereof. Furthermore, RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0180] <Applicable Systems> The embodiments described in the present disclosure are applicable to LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802.34 (WiMAX (registered trademark The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of LTE and / or LTE-A with 5G).

[0181] <Processing Procedures, etc.> The processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be rearranged unless inconsistent. 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.

[0182] <Operation of Base Station> In the present disclosure, specific operations described as being performed by a base station may also be performed by its upper node in some cases. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal may be performed by at least one of the base station and another network node other than the base station (for example, an MME or an S-GW, etc., but are not limited to these). Although the above example illustrates a case where there is one other network node other than the base station, a combination of multiple other network nodes (for example, an MME and an S-GW) may also be used.

[0183] <Direction of Input / Output> Information, etc. (see <Information, Signal>) can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may also be input / output via multiple network nodes.

[0184] <Handling of Input / Output Information, etc.> Input / output information, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, etc. may be overwritten, updated, or added. Output information, etc. may be deleted. Input information, etc. may be sent to another device.

[0185] <Determination method> The determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0186] <Variations of Aspects, etc.> Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched depending on the implementation. In addition, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0187] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0188] <Software> Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0189] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0190] Information, Signals, etc., described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be referred to throughout the above description, may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0191] Note that terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0192] <System, Network> As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0193] <Parameter and Channel Names> Furthermore, the information, parameters, and the like described in the present disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or other corresponding information. For example, a radio resource may be indicated by an index.

[0194] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0195] <Base Station> In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

[0196] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a remote radio head (RRH)). The terms "cell" or "sector" refer to part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage area.

[0197] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0198] Mobile Station In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0199] A mobile station may also be referred to by those skilled in the art 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, or some other suitable terminology.

[0200] <Base Station / Mobile Station> At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be an autonomous mobile object operating based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0201] Furthermore, the base station in the present disclosure may be read as a terminal. For example, the 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)). In this case, the device 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0202] Similarly, the term "terminal" in the present disclosure may be read as a base station. In this case, the base station 10 may be configured to have the functions of the device 20 described above.

[0203] Fig. 18 shows an example configuration of a vehicle 2001. As shown in Fig. 18, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0204] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0205] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0206] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0207] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The information service unit 2012 provides various types of multimedia information and multimedia services to the occupants of the vehicle 2001 by using information acquired from external devices via the communication module 2013, etc.

[0208] The information service unit 2012 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0209] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0210] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided in the vehicle 2001.

[0211] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0212] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021 to 2029 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021 to 2029, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0213] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on the information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH)).

[0214] Furthermore, the communication module 2013 stores various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, sensors 2021 to 2029, and the like provided in the vehicle 2001.

[0215] <Meaning and Interpretation of Terms> As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching a table, database, or other data structure), ascertaining something that is considered to be a "judging" or "determining," and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like that are considered to be a "judging" or "determining." Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0216] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0217] <Reference Signal> A reference signal can also be abbreviated as RS (Reference Signal), and may also be called a pilot depending on the applicable standard.

[0218] <Meaning of "based on"> As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0219] "First," "Second" Any reference to an element using designations such as "first," "second," etc., used in this disclosure 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 precede the second element in some way.

[0220] <Means> The "means" in the configuration of each device above may be replaced with "section," "circuit," "device," etc.

[0221] Open Format: When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0222] <Time Units such as TTI, Frequency Units such as RB, and Radio Frame Configuration> A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0223] Numerology may be a communication parameter that applies to the transmission and / or reception of a signal or channel, and may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

[0224] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol). A slot may be a time unit based on numerology.

[0225] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0226] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0227] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0228] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0229] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0230] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0231] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0232] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0233] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0234] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0235] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0236] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0237] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0238] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0239] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0240] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples, and various changes may be made to the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.

[0241] <Maximum Transmit Power> The "maximum transmit power" in the present disclosure may refer to the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0242] Articles 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.

[0243] <"Different"> In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0244] One aspect of the present disclosure is useful in wireless communication systems.

[0245] 10 Base station 20 Device 30 Intermediate node 101, 202, 302 Transmitter 102, 201, 301 Receiver 103, 203, 303 Controller

Claims

1. A first device that relays between a base station and a second device having a lower complexity than an NB-IoT (Narrow Band Internet of Things) device, the first device comprising: a control unit that generates a report to be transmitted to the base station; and a transmission unit that transmits the report to the base station.

2. The first device according to claim 1, further comprising a reception unit that receives an instruction from the base station, wherein the transmission unit transmits information to the second device based on the instruction, and the transmission unit transmits the report after the reception unit receives the instruction and before or after the transmission unit transmits the information to the second device.

3. The first device according to claim 2, wherein the control unit controls the time from when the reception unit receives the instruction to when the transmission unit transmits the information to the second device based on a parameter related to time.

4. The first device according to claim 2, wherein the report includes information indicating at least one of whether the reception unit can receive the instruction and whether the transmission unit can transmit the information to the second device.

5. A wireless communication system comprising: a base station; and a first device that relays between the base station and a second device having a lower complexity than an NB-IoT (Narrow Band Internet of Things) device, wherein the first device generates a report to be transmitted to the base station and transmits the report to the base station, and the base station receives the report from the first device.

6. A communication method in which a first device that relays between a base station and a second device having a lower complexity than an NB-IoT (Narrow Band Internet of Things) device generates a report to be transmitted to the base station and transmits the report to the base station.

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