Terminals, communication methods, base stations, and communication systems

Abstract

This terminal has: a transmission unit that transmits, to a base station, a report of the terminal capability of a non-continuous transmission function and a non-continuous reception function in a cell; and a control unit that executes setting for non-continuous transmission and non-continuous reception in a cell on the basis of the report. The report includes a terminal capability in which the functions of at least portions of the non-continuous transmission function and the non-continuous reception function are integrated.

Description

Terminal, base station, and communication method

[0001] The present invention relates to a terminal, a base station, and a communication method in a wireless communication system.

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

[0003] In LTE or NR, UE categories or UE capabilities for IoT (Internet of Things) are defined that reduce functions that are mandatory for normal terminals, such as functions related to transmission and reception bandwidth and the number of antennas. For example, in LTE, eMTC (enhanced Machine Type Communication) and NB-IoT (Narrow Band IoT) are defined, and in NR, RedCap (Reduced Capability) and the like are defined.

[0004] Furthermore, studies have begun on systems beyond 5G, or 6G, For example, technologies for network energy saving in these future systems are being studied.

[0005] 3GPP TS 38.300 V17.3.0 (2022-12) 3GPP TS 38.214 V17.4.0 (2022-12) 3GPP TS 38.331 V17.4.0 (2023-03)

[0006] In 3GPP (registered trademark) Rel-18, the introduction of cell discontinuous transmission (DTX) / discontinuous reception (DRX), as well as spatial domain (SD) adaptation and power domain (PD) adaptation are being considered for the purpose of reducing power consumption in the network.

[0007] However, the procedures for whether or not to support functions related to cell DTX / DRX, and functions related to spatial domain adaptation and power domain adaptation, how to support them, whether or not to report them from the terminal to the base station, and how to report them are not specified.

[0008] The present invention has been made in view of the above points, and has an object to define procedures for supporting and reporting functions relating to power reduction in a network in a wireless communication system.

[0009] According to the disclosed technology, there is provided a terminal having a transmitter that transmits a report of terminal capabilities of discontinuous transmission function and discontinuous reception function in a cell to a base station, and a controller that executes setting of discontinuous transmission and discontinuous reception in the cell based on the report, wherein the report includes terminal capabilities that integrate at least some of the functions of the discontinuous transmission function and the discontinuous reception function.

[0010] The disclosed technology allows a wireless communication system to define procedures for supporting and reporting power reduction features in the network.

[0011] FIG. 1 is a diagram illustrating an example of the configuration of a wireless communication system. FIG. 2 is a sequence diagram illustrating an example of transmission and reception according to an embodiment of the present invention. FIG. 3 is a diagram illustrating a technology related to power control according to an embodiment of the present invention. FIG. 4 is a diagram illustrating an example of the functional configuration of a base station 10 according to an embodiment of the present invention. FIG. 5 is a diagram illustrating an example of the functional configuration of a terminal 20 according to an embodiment of the present invention. FIG. 6 is a diagram illustrating an example of the hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention. FIG. 7 is a diagram illustrating an example of the configuration of a vehicle 2001 in an embodiment of the present invention.

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0013] In the operation of the wireless communication system according to the embodiment of the present invention, existing technology is used as appropriate. However, the existing technology is, for example, the existing LTE, but is not limited to the existing LTE. Furthermore, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems subsequent to LTE-Advanced (e.g., NR), unless otherwise specified.

[0014] In addition, in the embodiments of the present invention 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 called by other names. In addition, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if a signal is used in NR, it is not necessarily stated as "NR-".

[0015] Furthermore, in the embodiment of the present invention, 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.).

[0016] Furthermore, in the embodiments of the present invention, "configuring" radio parameters etc. may mean that predetermined values ​​are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are set.

[0017] Fig. 1 is a diagram showing a configuration example (1) of a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0018] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain. The time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is, for example, transmitted via NR-PBCH and is also referred to as broadcast information. The synchronization signal and system information may also be referred to as SSB (SS / PBCH block). As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).

[0019] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10 and measures propagation path quality based on the reception results of the reference signals.

[0020] The terminal 20 is capable of performing carrier aggregation, which aggregates multiple cells (multiple CCs (Component Carriers)) to communicate with the base station 10. In carrier aggregation, one PCell (Primary cell) and one or more SCells (Secondary cells) are used. Also, a PUCCH-SCell having a PUCCH may be used.

[0021] 3GPP Rel-18 does not specify whether or not to support DTX / DRX features in cells, how to support them, or whether or not and how to report them from terminals to a base station. Because the cell DTX / DRX mechanism is used to reduce network power consumption, all terminals connected to a cell must support the cell DTX / DRX function to enable cell DTX / DRX. However, it is difficult to mandate support for all cell DTX / DRX functions for all terminals after Rel-18. While carriers may not require some cell DTX / DRX mechanisms, supporting all cell DTX / DRX functions is undesirable because it increases terminal costs.

[0022] Furthermore, 3GPP Rel-18 does not specify whether or not spatial domain adaptation and power domain adaptation functions are supported, how they are supported, or procedures for reporting them from a terminal to a base station. If a terminal supports one adaptation mechanism and other terminals in the same cell support a different adaptation mechanism, it is difficult to apply a single adaptation mechanism to the network. It is also difficult to require support for all adaptation mechanisms for all terminals in Rel-18 and later.

[0023] First Embodiment A first embodiment will be described below. In the first embodiment, a procedure for supporting and reporting a function related to power reduction in a network in a wireless communication system will be described.

[0024] In the first embodiment, for example, the following settings and functions are used for the mechanism of discontinuous transmission (DTX) / discontinuous reception (DRX) in a cell. Note that this mechanism may also be abbreviated as cell DTX / DRX.

[0025] - Cell DTX / DRX configuration, activation, and deactivation by RRC - Operation of the terminal 20 in sections where cell DTX / DRX is not active (whether to perform transmission and reception in sections where cell DTX / DRX for each signal and channel is not active) - L1 indication regarding activation / deactivation of cell DTX / DRX Furthermore, in the first embodiment, with regard to network power reduction, for example, the following configurations and functions are used for the mechanisms of Spatial Domain (SD) adaptation and Power Domain (PD) adaptation shown below.

[0026] ・Type 1 spatial domain adaptation and Type 2 spatial domain adaptation ・Configuration of CSI reporting with up to L sub-configurations ・Reporting including up to N CSI (Channel State Information) in one reporting instance ・DCI-based triggering for aperiodic (Aperiodic) CSI and semi-persistent (SP) CSI in the uplink data channel (PUSCH) ・DCI-based triggering for semi-persistent (SP) CSI in the uplink control channel (PUCCH) ・Power domain adaptation with one or more resources and / or one or more power offset values ​​for each resource ・Joint operation of spatial domain (SD) adaptation and power domain (PD) adaptation Figure 2 is a sequence diagram illustrating an example of transmission and reception according to an embodiment of the present invention. The processing of each step in Figure 2 will be described below.

[0027] Step S100: The terminal 20 performs reporting on support and / or capability for power reduction-related functions, such as cell DTX / DRX, spatial domain adaptation, and power domain adaptation. The reporting may be performed using an RRC protocol, an uplink control channel (DCI), a MAC CE, an uplink control channel (PUCCH), an uplink data channel (PUSCH), etc.

[0028] Step S101: The terminal 20 executes a setting process for the power saving function based on the content reported in step S100.

[0029] The following provides a detailed description of the procedures for supporting and reporting power reduction features in a network.

[0030] (Proposal 1) Proposal 1 defines a capability reporting of a terminal 20 regarding a cell DTX / DRX function. Here, the capability reporting of a terminal 20 regarding a certain function is a report regarding a terminal capability regarding whether or not the terminal 20 has the capability to support a certain function, and may hereinafter be expressed as capability for a function or support for a function.

[0031] Furthermore, in Proposal 1, the following conditions, settings, and process execution may be assumed.

[0032] The periodic cell DTX / DRX configuration is explicitly transmitted (signaled) to the terminal 20 .

[0033] The periodic cell DTX / DRX pattern is set by RRC signaling for each terminal 20 (UE specific RRC signaling).

[0034] Cell DTX / DRX can be implicitly enabled / disabled by RRC signaling, i.e., enabled as soon as it is configured by RRC and disabled as soon as the RRC configuration is released, or an RRC parameter can be configured to explicitly enable / disable it, separate from the periodic cell DTX / DRX pattern configuration.

[0035] The terminal 20 does not monitor SPS (Semi-Persistent Scheduling) occasions during periods when the cell DTX is inactive. The base station 10 does not transmit a downlink data channel (PDSCH) to the terminal 20 during SPS occasions during periods when the cell DTX is inactive.

[0036] The terminal 20 does not perform data transmission in a CG (Configured Grant) occasion where cell DRX is not active.

[0037] The terminal 20 does not transmit an SR (Scheduling Request) opportunity that overlaps with a period in which cell DRX is inactive, that is, drops the transmission of an SR during the inactive period.

[0038] The terminal 20 monitors the downlink control channel (PDCCH) for RARs (Random Access Responses) during times when the cell DTX is not active.

[0039] The terminal 20 monitors the downlink control channel (PDCCH) for msg4 in the random access procedure when the cell DTX is not active. Here, the ra-ContentionResolutionTimer is started as legacy (as in the existing system).

[0040] If Connected-DRX (C-DRX) is set, when the transmission timer is running, the terminal 20 monitors the downlink control channel (PDCCH) in the same way as a legacy terminal.

[0041] When the base station 10 receives a dynamic grant in cell DRX / DTX, the terminal 20 follows the grant assignment and performs downlink HARQ feedback in the same way as a legacy terminal.

[0042] A terminal 20 supporting cell DTX in 3GPP Rel-18 is not expected to receive specific signals and channels from a base station 10 during periods when cell DTX is not active. The specific signals and channels include, for example, a PDCCH in a specific search space, a PSCCH in a Type-3 common search space (CSS), positioning reference signals (PRS), a channel state information reference signal (CSI-RS) configured by configuration information such as measOjectNR for radio resource management (RRM), a CSI-RS related to configuration information (RadioLinkMonitoringConfig, BeamFailureDectection, etc.) for radio link monitoring (RLM) and beam failure detection (BFD), a periodic CSI-RS configured by configuration information (trs-info, etc.) for tracking, and a periodic or quasi-persistent CSI-RS for beam management.

[0043] A terminal 20 that supports cell DRX in 3GPP Rel-18 is not expected to transmit specific signals and channels to the base station 10 during periods when cell DRX is not active. The specific signals and channels include, for example, periodic or quasi-persistent channel state information reports (CSI reports), periodic or quasi-persistent Sounding Reference Signals (SRSs), SRSs for positioning, and quasi-persistent HARQ feedback.

[0044] Group common L1 signaling using PDCCH for cell DTX / DRX enabling and disabling is supported.

[0045] (Proposal 1a) The terminal 20 reports support for the cell DTX feature and the cell DRX feature.

[0046] (Alt. 1-1) The capabilities for the cell DTX function and the cell DRX function are defined as a combined capability, rather than as capabilities for separate, different functions. Here, the cell DTX and cell DRX may each have multiple functions, or may have functions with different settings such as periodic patterns. The same applies hereinafter.

[0047] (Alt. 1-1-1) Optional feature(s) in cell DTX and cell DRX may be defined as an integrated capability.

[0048] (Alt. 1-1-2) Optional feature(s) for cell DTX and cell DRX may be defined separately as different capabilities.

[0049] (Alt. 1-2) The capabilities for the cell DTX function and the cell DRX function are defined separately as capabilities for different functions, but specific types of functions (optional feature(s)) within the functions may be defined as integrated capabilities.

[0050] (Proposal 1b) Specific types of features (optional feature(s)) reported separately from basic support for cell DTX and / or cell DRX include at least an L1 indication and / or a MAC indication indicating activation and deactivation of cell DTX and cell DRX. Basic support, for example, means support that meets minimum requirements, and the same applies hereinafter. Furthermore, a terminal that reports support for specific types of features (optional feature(s)) reported separately from basic support may also report basic support for the component carriers of the band or band combination, or a band within a band combination, or a band within a band combination, that are the subject of the reporting.

[0051] (Alt. 1-1) Indications at Layer 1 and indications at the MAC layer may be defined as separate capabilities if both indications are defined.

[0052] (Alt. 1-2) An indication in Layer 1 and / or MAC layer for cell DTX and an indication in Layer 1 and / or MAC layer for cell DRX may be defined as a combined capability.

[0053] (Alt. 1-3) An indication in Layer 1 and / or MAC layer for cell DTX and an indication in Layer 1 and / or MAC layer for cell DRX may be defined as separate and distinct capabilities.

[0054] (Proposal 1c) The terminal 20 reports support for configuration during periods when cell DTX and / or cell DRX are not active.

[0055] The terminal 20 reports support for behavior during periods when cell DTX and / or cell DRX are not active.

[0056] Here, the non-active period of cell DTX and / or cell DRX is, for example, a period during which the functions of cell DTX and / or cell DRX are not activated, i.e., a period during which they are deactivated.

[0057] (Alt. 1-1) For all signals and / or channels, support for configuration during periods when cell DTX and / or cell DRX are not active and support for operation during periods when cell DTX and / or cell DRX are not active may be defined as an integrated capability.

[0058] (Alt. 1-2) For certain types of signals and / or channels, support for configuration during periods when cell DTX and / or cell DRX are not active and support for operation during periods when cell DTX and / or cell DRX are not active may be defined as an integrated capability.

[0059] For a particular type of signal and / or channel, support for configuration during periods when cell DTX and / or cell DRX are not active and support for operation during periods when cell DTX and / or cell DRX are not active may be defined as different capabilities.

[0060] (First example of Alt. 1-2) If not monitoring signals and channels during periods when the cell DTX is not active is part of an integrated capability, monitoring specific signals and / or channels during periods when the cell DTX is not active may be defined as a different capability.

[0061] (Second example of Alt. 1-2) If not transmitting signals and channels during periods when the cell DTX is not active is part of an integrated capability, transmitting specific signals and / or channels during periods when the cell DTX is not active may be defined as a different capability.

[0062] (Third Example of Alt. 1-2) A particular signal and / or channel may be determined by conditions such as configuration and included content. For example, a particular signal and / or channel may not be fixed to a particular signal and / or channel.

[0063] As described above, the method described in Proposal 1 allows the terminal 20 to transmit to the base station 10 a report on the terminal capabilities that are appropriately defined depending on the cell DTX / DRX functions, settings, and conditions (such as signal and channel type) in order to reduce power consumption.

[0064] (Proposal 2) Proposal 2 properly defines the capability reporting of the terminal 20 regarding the functions of Spatial Domain (SD) adaptation and Power Domain (PD) adaptation.

[0065] 3A and 3B are diagrams for explaining techniques related to power control. Fig. 3A shows Type 1 spatial adaptation, which performs adaptation by turning on or off power for each antenna port. Fig. 3B shows Type 2 spatial adaptation, which performs adaptation by turning on or off power for each antenna element (AE).

[0066] Furthermore, in Proposal 2, the following conditions, settings, and process execution may be assumed.

[0067] Within one resource configuration corresponding to one or more spatial adaptation patterns, configuration of a non-zero power channel state information reference signal for channel measurement is supported.

[0068] Spatial adaptation is supported, in which one CSI reporting configuration includes sub-configuration information of multiple CSI reports, and each sub-configuration information corresponds to one spatial adaptation pattern.

[0069] For a CSI reporting configuration having L pieces of lower configuration information, a framework may be supported that enables terminal 20 to report N pieces of CSI in one reporting instance, where N to L (N is 1 to L) CSIs are associated with the N pieces of lower configuration information, and each CSI corresponds to one piece of lower configuration information.

[0070] In power domain adaptation, for CSI reporting, one or more power offset values ​​for PDSCH relative to the power of CSI-RS are supported.

[0071] In power domain adaptation, configuration information for configuring resources of CSI-RS is supported, in which one or more resources are configured in a resource set or resource setting, and each resource corresponds to one or more power offset values.

[0072] In Type 1 Spatial Domain (SD) Adaptation, a resource set containing multiple resources is configured within a resource setting, where each resource is associated with only one spatial adaptation.

[0073] In Type 2 Spatial Domain (SD) Adaptation, a resource is configured within a resource setting of a resource set, where the resource is associated with one or more spatial adaptations.

[0074] Downlink Control Information (DCI)-based triggering is supported for aperiodic CSI (A-CSI) and semi-persistent CSI (SP-CSI) reporting on the uplink shared channel (PUSCH).

[0075] MAC CE based triggering is supported for reporting SP-CSI on the uplink control channel (PUCCH).

[0076] Joint operation of Spatial Domain (SD) adaptation and Power Domain (PD) adaptation is supported.

[0077] (Proposal 2a) The terminal 20 reports support for Type 1 spatial adaptation features and Type 2 spatial adaptation features.

[0078] (Alt. 2-1) The capabilities for the Type 1 spatial adaptation function and the Type 2 spatial adaptation function are defined as a combined capability, rather than as capabilities for separate, different functions. Here, the function may include multiple functions with different settings, etc. For example, the Type 1 spatial adaptation function may include multiple types of functions related to Type 1 spatial adaptation. The same applies hereinafter.

[0079] (Alt. 2-1-1) Optional feature(s) in Type 1 spatial adaptation and Type 2 spatial adaptation may be defined as an integrated capability.

[0080] (Alt. 2-1-2) Specific types of optional feature(s) in Type 1 spatial adaptation and Type 2 spatial adaptation may be defined separately as different abilities.

[0081] (Alt. 2-2) The abilities for Type 1 spatial adaptation and Type 2 spatial adaptation are each defined separately as abilities for different functions, but specific types of functions (optional feature(s)) within those functions may be defined as an integrated ability.

[0082] (Proposal 2b) Optional feature(s) reported apart from basic support for Type 1 spatial adaptation and / or Type 2 spatial adaptation include at least one of the following pieces of information regarding at least Type 1 spatial adaptation and Type 2 spatial adaptation:

[0083] The maximum number of sub-configurations (L) The maximum number of Channel State Information (CSI) in one reporting instance (N) Downlink Control Information (DCI)-based CSI triggering and / or MAC (Medium Access Control) CE (Control Element)-based CSI triggering (i.e., information on whether the terminal 20 supports receiving the triggering)

[0084] When basic support for Type 1 spatial adaptation and / or Type 2 spatial adaptation is reported, up to a predetermined number of sub-configurations may be configurable, and channel state information (CSI) corresponding to all the sub-configurations may be reported at each periodic CSI reporting opportunity. Regarding the predetermined number, the upper limit value supported by the terminal from among multiple candidate values ​​may be reported, or the predetermined number when basic support is reported may be specified in the specifications.

[0085] Apart from basic support for Type 1 spatial adaptation and / or Type 2 spatial adaptation, it may also be possible to report whether or not each of the following, or a combination of multiple of them, is supported:

[0086] Aperiodic CSI (A-CSI) in the uplink shared channel (PUSCH) is triggered based on downlink control information (DCI), and the maximum number of sub-configurations (L) and / or the maximum number of channel state information (CSI) in one reporting instance (N) is specified.

[0087] Semi-persistent CSI (SP-CSI) in the uplink shared channel (PUSCH) is triggered based on downlink control information (DCI), and the maximum number of sub-configurations (L) and / or the maximum number of channel state information (CSI) in one reporting instance (N) is specified.

[0088] Semi-persistent CSI (SP-CSI) in the uplink control channel (PUCCH) is triggered on a MAC CE basis, along with the maximum number of sub-configurations (L) and / or the maximum number of Channel State Information (CSI) in one reporting instance (N).

[0089] That is, for the maximum number of sub-configurations (L) and / or the maximum number of Channel State Information (CSI) in one reporting instance (N), different values ​​may be reported depending on the reporting method, or a value common to multiple reporting methods may be reported.

[0090] (Proposal 2c) The terminal 20 reports support for joint operation between the functionality of Type 1 and / or Type 2 spatial domain adaptation and the functionality of power domain adaptation. Hereinafter, the functionality of Type 1 and Type 2 spatial domain adaptation may be simply referred to as spatial domain adaptation.

[0091] (Alt. 2-1) Support for the joint operation may be defined separately from the capabilities for the spatial domain adaptation function and the power domain adaptation function. That is, even if the terminal 20 supports both the spatial domain adaptation function and the power domain adaptation function, the terminal 20 may not support the joint operation.

[0092] (Alt. 2-2) Support for the joint operation is not defined separately from the capabilities for the spatial domain adaptation function and the power domain adaptation function, i.e., if the terminal 20 supports both the spatial domain adaptation function and the power domain adaptation function, the terminal 20 must support the joint operation.

[0093] Regarding the maximum number of sub-configurations (L) and / or the maximum number of Channel State Information (CSI) in one reporting instance (N) when supporting the cooperative operation, values ​​different from those in the case of the spatial domain adaptation function and the power domain adaptation function separately may be reported or assumed.

[0094] (Proposal 2d) The terminal 20 reports support for DCI-based CSI triggering and MAC CE-based CSI triggering.

[0095] (Alt. 2-1) Support for DCI-based CSI triggering and MAC CE-based CSI triggering may be defined as a combined capability.

[0096] (Alt. 2-1-1) The integrated capability of Alt. 2-1 may be defined as the capability for both aperiodic CSI (A-CSI) and semi-persistent (SP) CSI (SP-CSI).

[0097] (Alt. 2-1-2) The integrated capabilities of Alt. 2-1 may be defined as different capabilities for aperiodic CSI (A-CSI) and semi-persistent (SP) CSI (SP-CSI).

[0098] (Alt. 2-2) Support for triggering CSI based on DCI and support for triggering CSI based on MAC CE may be defined as separate capabilities.

[0099] (Proposal 2e) The terminal 20 reports the maximum number of sub-configurations, the maximum number of Channel State Information (CSI) in one reporting instance, the maximum power offset per resource, and the maximum number of resources for power domain adaptation.

[0100] (Alt. 2-1) The information reported by the terminal 20 described in Proposal 2e may be reported as part of basic support for spatial domain adaptation and / or power domain adaptation.

[0101] (Alt. 2-2) A terminal 20 that supports basic support for spatial domain adaptation and / or power domain adaptation may be required to support a specific maximum value, and any maximum value greater than the specific maximum value may be defined as an optional capability.

[0102] (Alt. 2-2-1) Regarding the maximum value in Alt. 2-2, the terminal 20 may report different values ​​for each adaptation mechanism (spatial domain adaptation, power domain adaptation, etc.).

[0103] (Alt. 2-2-2) Regarding the maximum value in Alt. 2-2, the terminal 20 may be reported a common value for different adaptation mechanisms (such as spatial domain adaptation and power domain adaptation).

[0104] As described above, the method described in Proposal 2 enables the terminal 20 to transmit to the base station 10 a report on the terminal capabilities that are appropriately defined depending on the functions, settings, and conditions (such as signal and channel type) of spatial domain adaptation and power domain adaptation in order to reduce power consumption.

[0105] The above-described embodiments allow a wireless communication system to define procedures for supporting and reporting power reduction features in the network.

[0106] (Device Configuration) Next, a functional configuration example of the base station 10 and the terminal 20 that execute the processes and operations described above will be described. The base station 10 and the terminal 20 include functions for implementing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions of the embodiments.

[0107] <Base Station 10> Figure 4 is a diagram showing an example of the functional configuration of the base station 10 according to the embodiment of the present invention. As shown in Figure 4, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Figure 4 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations according to the embodiment of the present invention.

[0108] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The transmitter 110 also transmits inter-network node messages to other network nodes. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of higher layers from the received signals. The transmitter 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc. to the terminal 20. The receiver 120 also receives inter-network node messages from other network nodes.

[0109] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20. The content of the setting information is, for example, information related to settings related to support and reporting of functions related to power reduction in the network.

[0110] The control unit 140 performs control to realize the functions described in the embodiments. Furthermore, as described in the embodiments, the control unit 140 performs control related to support and reporting of functions related to power reduction in the network. The function unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the function unit related to signal reception in the control unit 140 may be included in the receiving unit 120.

[0111] <Terminal 20> Fig. 5 is a diagram showing an example of the functional configuration of terminal 20 in an embodiment of the present invention. As shown in Fig. 5, terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 5 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention.

[0112] The transmitter 210 creates a transmission signal from transmission data and transmits the transmission signal wirelessly. The receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals. The receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, and the like transmitted from the base station 10. For example, the transmitter 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to another terminal 20 as D2D communication, and the receiver 220 receives the PSCCH, PSSCH, PSDCH, or PSBCH, and the like, from the other terminal 20.

[0113] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220. The setting unit 230 also stores setting information that is set in advance. The content of the setting information includes, for example, information related to settings related to support and reporting of functions related to power reduction in the network.

[0114] The control unit 240 performs control to realize the functions described in the embodiments. Furthermore, as described in the embodiments, the control unit 240 performs control related to support and reporting of functions related to power reduction in the network. A functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.

[0115] (Hardware Configuration) The block diagrams (FIGS. 4 and 5) 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 (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0116] Functions include, but are not limited to, judgment, determination, judgment, 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.

[0117] For example, the base station 10, the terminal 20, 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. 6 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0118] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 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.

[0119] Each function in the base station 10 and the terminal 20 is realized by loading specified software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0120] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0121] Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 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 140 of the base station 10 shown in FIG. 4 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. Furthermore, for example, the control unit 240 of the terminal 20 shown in FIG. 5 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. 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.

[0122] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0123] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of 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. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0124] 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, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0125] 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. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0126] Furthermore, each device such as the processor 1001 and the storage device 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.

[0127] Furthermore, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), 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.

[0128] Fig. 7 shows an example configuration of a vehicle 2001. As shown in Fig. 7, 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.

[0129] 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.

[0130] 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).

[0131] 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 front or rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front or rear wheel air pressure signal 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.

[0132] 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 for controlling these devices. The information service unit 2012 uses information acquired from external devices via the communication module 2013 or the like to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001. The information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that output information to the outside.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021-2028 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 2021-2028, 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.

[0137] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may 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 (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the 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, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0138] (Summary of the embodiment) As described above, according to the embodiment of the present invention, there is provided a terminal having a transmitter that transmits a report of terminal capabilities of discontinuous transmission function and discontinuous reception function in a cell to a base station, and a controller that executes setting of discontinuous transmission and discontinuous reception in the cell based on the report, wherein the report includes terminal capabilities that integrate at least some functions of the discontinuous transmission function and the discontinuous reception function.

[0139] With the above configuration, it is possible to define procedures for supporting and reporting power reduction-related functions in a network in a wireless communication system.

[0140] The report may include support for instructions to enable and disable the discontinuous transmission and discontinuous reception capabilities at Layer 1 or MAC CE.

[0141] With the above configuration, it is possible to define procedures for supporting and reporting power reduction-related functions in a network in a wireless communication system.

[0142] The report may include integrated configuration support and operational support, or may include both configuration support and operational support during periods when the discontinuous transmission and discontinuous reception functions are not active.

[0143] With the above configuration, it is possible to define procedures for supporting and reporting power reduction-related functions in a network in a wireless communication system.

[0144] The report may include integrated configuration support and operational support, or may include configuration support and operational support, for monitoring or transmitting for all or specific types of signals and / or channels during periods when the discontinuous transmission function and the discontinuous reception function are not active.

[0145] With the above configuration, it is possible to define procedures for supporting and reporting power reduction-related functions in a network in a wireless communication system.

[0146] Furthermore, according to an embodiment of the present invention, there is provided a base station including: a receiving unit that receives from a terminal a report of terminal capabilities for discontinuous transmission function and discontinuous reception function in a cell; and a control unit that executes setting of discontinuous transmission and discontinuous reception in the cell based on the report, wherein the report includes terminal capabilities that integrate at least some functions of the discontinuous transmission function and the discontinuous reception function.

[0147] With the above configuration, it is possible to define procedures for supporting and reporting power reduction-related functions in a network in a wireless communication system.

[0148] Furthermore, according to an embodiment of the present invention, there is provided a communication method executed by a terminal, comprising: a step of transmitting a report including terminal capabilities of a discontinuous transmission function and a discontinuous reception function in a cell to a base station; and a step of performing configuration of discontinuous transmission and discontinuous reception in the cell based on the report, wherein the report includes terminal capabilities in which the discontinuous transmission function and the discontinuous reception function are integrated, or includes terminal capabilities for the discontinuous transmission function and the discontinuous reception function.

[0149] With the above configuration, it is possible to define procedures for supporting and reporting power reduction-related functions in a network in a wireless communication system.

[0150] (Supplementary Notes on the Embodiments) Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (as long as there is no contradiction). Boundaries between functional units or processing units in functional block diagrams do not necessarily correspond to boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0151] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), 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, the 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.

[0152] Each aspect / embodiment described in the present disclosure may be implemented using any of the following standards: 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 number)), 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 ( 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).

[0153] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be rearranged unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0154] In this specification, a specific operation described as being performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0155] The information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0156] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be transmitted to another device.

[0157] In the present disclosure, the determination may be made by a value represented by one bit (0 or 1), by a Boolean value (true or false), or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0158] 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.

[0159] 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.

[0160] The 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. that 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.

[0161] 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.

[0162] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0163] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0164] 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.

[0165] In the present disclosure, terms such as "base station (BS)," "radio base station," "base station device," "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.

[0166] 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 small indoor base station (RRH: Remote Radio Head)). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage.

[0167] 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.

[0168] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0169] 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.

[0170] 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 a mobile object that moves autonomously 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.

[0171] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the terminal 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 terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0172] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0173] 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 in a table, database, or other data structure), ascertaining, 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. 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.

[0174] 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.

[0175] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0176] 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."

[0177] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0178] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0179] 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.

[0180] 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.

[0181] Numerology may be communication parameters that apply to the transmission and / or reception of a signal or channel, such as 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, specific windowing operations performed by the transceiver in the time domain, etc.

[0182] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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 wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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 the numerology, for example, 12. The number of subcarriers included in an RB may be determined based on the numerology.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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."

[0198] 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.

[0199] 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.

[0200] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." 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."

[0201] The aspects / embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Notification of predetermined information (e.g., notification that "X is true") is not limited to explicit notification, but may be implicit (e.g., not notifying the predetermined information).

[0202] 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.

[0203] REFERENCE SIGNS LIST 10 Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 30 Core network 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheels 2008 Rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 RPM sensor 2023 Tire pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. A transmission unit that transmits capability information relating to at least one operation of a cell discontinuous transmission operation in which a cell performs discontinuous transmission and a cell discontinuous reception operation in which the cell performs discontinuous reception, to a network, The system includes a receiving unit that receives setting information from the network to set at least one of the cell non-continuous transmission operation and the cell non-continuous reception operation, The capability information includes one of the following: first information indicating support for the cell non-continuous transmission operation; second information indicating support for the cell non-continuous reception operation; and third information indicating support for both the cell non-continuous transmission operation and the cell non-continuous reception operation. Terminal.

2. The capability information indicates that it supports at least one of the cell discontinuous transmission operation and the cell discontinuous reception operation set by the RRC signaling. The terminal according to claim 1.

3. The transmitting unit transmits to the network information indicating that it supports a Layer 1 instruction indicating the activation or deactivation of the cell non-continuous transmission operation and the cell non-continuous reception operation. The terminal according to claim 1.

4. A step of transmitting capability information to a network relating to at least one operation of a cell discontinuous transmission operation in which a cell performs discontinuous transmission and a cell discontinuous reception operation in which the cell performs discontinuous reception, The process includes receiving setting information from the network to set at least one of the cell non-continuous transmission operation and the cell non-continuous reception operation, The capability information includes one of the following: first information indicating support for the cell non-continuous transmission operation; second information indicating support for the cell non-continuous reception operation; and third information indicating support for both the cell non-continuous transmission operation and the cell non-continuous reception operation. Communication method.

5. A receiving unit that receives capability information from a terminal relating to at least one operation, namely a cell non-continuous transmission operation in which a cell performs non-continuous transmission, and a cell non-continuous reception operation in which the cell performs non-continuous reception, The system includes a transmitting unit that transmits setting information to the terminal for setting at least one of the cell non-continuous transmission operation and the cell non-continuous reception operation, The capability information includes one of the following: first information indicating support for the cell non-continuous transmission operation; second information indicating support for the cell non-continuous reception operation; and third information indicating support for both the cell non-continuous transmission operation and the cell non-continuous reception operation. Base station.

6. A communication system having a terminal and a base station, The terminal transmits capability information relating to at least one operation, which is a cell discontinuous transmission operation in which the cell performs discontinuous transmission, and a cell discontinuous reception operation in which the cell performs discontinuous reception, to the base station. The base station transmits to the terminal configuration information that configures at least one of the cell discontinuous transmission operation and the cell discontinuous reception operation. The capability information includes one of the following: first information indicating support for the cell non-continuous transmission operation; second information indicating support for the cell non-continuous reception operation; and third information indicating support for both the cell non-continuous transmission operation and the cell non-continuous reception operation. Communication system.