Terminal, wireless communication method, base station, and system

Abstract

To increase resource utilization efficiency.SOLUTION: A terminal includes a receiving unit that receives information about a first time resource, which is a time resource including one or more symbols, and indicates either an uplink or a downlink, and information about a frequency resource within a certain bandwidth part (BWP) of the first time resource, and a control unit that controls uplink transmission or downlink reception in the frequency resource within the first time resource based on the information.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a terminal, a wireless communication method, a base station, and a system in a next-generation mobile communication system. [Background technology]

[0002] In Universal Mobile Telecommunications System (UMTS) networks, Long Term Evolution (LTE) has been specified with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) has been specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 or later) are also being considered. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention [Problem to be solved by the invention]

[0005] In future wireless communication systems (for example, NR), it is expected that multiple user terminals (user equipment (UE)) will communicate in an ultra-high density and high traffic environment.

[0006] In such an environment, it is expected that uplink (UL) resources will be insufficient compared to downlink (DL) resources.

[0007] However, in the current NR specifications, methods for increasing uplink resources have not been fully considered. If these methods cannot be properly controlled, there is a risk of system performance degradation, such as increased latency and reduced coverage.

[0008] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, a base station, and a system that improve resource utilization efficiency. [Means for solving the problem]

[0009] A terminal according to one embodiment of the present disclosure includes a receiving unit that receives information regarding a first time resource, which is a time resource including one or more symbols and indicates either an uplink or a downlink, and information regarding a frequency resource within a certain bandwidth part (BWP) of the first time resource, and a control unit that controls uplink transmission or downlink reception in the frequency resource within the first time resource based on the information. [Effects of the Invention]

[0010] According to one aspect of the present disclosure, resource utilization efficiency can be improved. [Brief explanation of the drawings]

[0011] [Figure 1]1A and 1B are diagrams showing an example of setting a slot configuration. [Figure 2] FIG. 2 is a diagram illustrating an example of the configuration of an XDD. [Figure 3] 3A and 3B are diagrams illustrating an example of the configuration of time domain and frequency domain resources for XDD operation. [Figure 4] 4A and 4B are diagrams showing an example of DL / UL BWP switching. [Figure 5] FIG. 5 is a diagram illustrating an example of a scheduling method according to embodiment 2-6-2. [Figure 6] 6A and 6B are diagrams showing examples of slot formats. [Figure 7] 7A to 7D are diagrams illustrating an example of partial availability according to the third embodiment. [Figure 8] FIG. 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 9] FIG. 9 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 11] FIG. 11 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (TDD settings) In Rel. 15, UL and DL resources (UL resources and DL resources) for Time Division Duplex (TDD) are configured for the UE. The UE may receive higher layer parameters for cell-specific UL / DL TDD configuration (TDD-UL-DL-ConfigCommon) or UE-specific UL / DL TDD configuration (TDD-UL-DL-ConfigDedicated).

[0013] The higher layer parameters for cell-specific UL / DL TDD configuration (TDD-UL-DL-ConfigCommon) include a parameter for setting the reference subcarrier spacing (referenceSubcarrierSpacing) and a parameter for TDD UL and DL patterns (TDD-UL-DL-Pattern).

[0014] The TDD-UL-DL-Pattern includes a parameter (dl-UL-TransmissionPeriodicity) that sets the period of the DL-UL pattern, a parameter (nrofDownlinkSlots) that sets the number of consecutive DL slots, a parameter (nrofDownlinkSymbols) that sets the number of consecutive DL symbols, a parameter (nrofUplinkSlots) that sets the number of consecutive UL slots, and a parameter (nrofUplinkSymbols) that sets the number of consecutive UL symbols.

[0015] The slot and slot index are configured in the higher layer parameters (TDD-UL-DL-ConfigDedicated) related to the UE-specific UL / DL TDD configuration.

[0016] The slot is configured using the parameter TDD-UL-DL-SlotConfig. TDD-UL-DL-SlotConfig includes a parameter related to the slot index (TDD-UL-DL-SlotIndex) and a parameter related to the symbols that make up the slot (symbols). The parameter related to the symbols that make up the slot (symbols) can be set to either a parameter indicating that all symbols that make up the slot are used for DL ​​(allDownlink), a parameter indicating that all symbols that make up the slot are used for UL (allUplink), or a parameter that explicitly indicates the number of symbols (explicit).

[0017] The parameter (explicit) that explicitly indicates the number of symbols includes a parameter (nrofDownlinkSymbols) that sets the number of DL symbols and a parameter (nrofUplinkSymbols) that sets the number of UL symbols.

[0018] The UE determines the slots / symbols to use for transmitting UL signals / channels and / or receiving DL signals / channels based on the above parameters.

[0019] (XDD) Considering the time ratio of transmission and reception (e.g., DL:UL = 4:1) in Time Division Duplex (TDD) up to Rel. 16, there may be cases where the number of transmission opportunities for UL signals / channels is fewer than the number of reception opportunities for DL ​​signals / channels. In such cases, UEs cannot transmit UL signals / channels frequently, which raises concerns about delays in transmission of important UL signals / channels. Furthermore, since there are fewer UL transmission opportunities compared to DL reception opportunities, there is also concern about signal / channel congestion during UL transmission opportunities. Furthermore, since TDD limits the time resources available for UL signal / channel transmission, the application of UL coverage extension techniques, such as repetition transmission, is also limited.

[0020] In future wireless communication systems (for example, Rel. 17 / 18 and later), the introduction of a frequency division duplexing method that combines TDD and frequency division duplex (FDD) for UL and DL is being considered.

[0021] This division duplexing method may be called XDD (Cross Division Duplex). XDD may refer to a duplexing method in which DL and UL are frequency-division multiplexed (DL and UL can be used simultaneously) within one component carrier (CC) in the TDD band.

[0022] Fig. 1A is a diagram showing an example of TDD configuration defined up to Rel. 16. In the example shown in Fig. 1A, TDD slots / symbols are configured for a UE within the bandwidth of one component carrier (CC) (which may also be called a cell or serving cell).

[0023] In the example shown in Figure 1A, the time ratio of DL slots to UL slots is 4:1. This slot / symbol setting in conventional TDD does not ensure sufficient UL time resources, which can result in UL transmission delays and reduced coverage performance.

[0024] Fig. 1B is a diagram showing an example of the configuration of XDD. In the example of Fig. 1B, within one component carrier (CC), resources used for DL ​​reception and resources used for UL transmission overlap in time. With such a resource configuration, UL resources can be secured, and resource utilization efficiency can be improved.

[0025] For example, as shown in the example of Fig. 1B, by configuring both ends of the frequency domain in one CC as DL and sandwiching UL resources between the DL, it is possible to avoid and mitigate the occurrence of cross link interference (CLI) with neighboring carriers. Also, a guard area may be set at the boundary between the DL resource and the UL resource.

[0026] Considering the complexity of handling self-interference, it is possible for only the base station to use DL and UL resources simultaneously, i.e., where DL and UL resources overlap in time, one UE may use the DL resource and another UE may use the UL resource.

[0027] Fig. 2 is a diagram showing an example of the configuration of XDD. In the example shown in Fig. 2, part of the DL resources of the TDD band is used as UL resources, and the DL and UL are configured to overlap in time.

[0028] In the example shown in FIG. 2, during the DL-only period, each of the multiple UEs (UE#1 and UE#2 in FIG. 2) receives the DL channel / signal.

[0029] Furthermore, during the period when DL and UL overlap in time, one UE (UE#1 in the example of FIG. 2) receives the DL channel / signal, and another UE (UE#2 in the example of FIG. 2) transmits the UL channel / signal. During this period, the base station simultaneously transmits and receives DL and UL.

[0030] Additionally, during the UL-only period, each of the multiple UEs transmits an UL channel / signal.

[0031] In existing NR (e.g., those specified up to Rel. 15 / 16), DL frequency resources and UL frequency resources of a UE carrier are configured as DL Bandwidth Parts (BWPs) and UL BWPs, respectively. To switch DL / UL frequency resources to other DL / UL frequency resources, multiple BWP configurations and a BWP adaptation mechanism are required.

[0032] In addition, in existing NR, the time resource in the TDD carrier for the UE is configured as at least one of DL, UL, and flexible (FL) in the TDD configuration.

[0033] The time and frequency domain resource configuration methods for XDD operation are being considered. For example, for UE#1 in Figure 2, the XDD resource (duration of DL and UL overlap) can be configured similarly to the existing DL resource (e.g., by using Frequency Domain Resource Allocation (FDRA) to avoid using part of the UL resource), minimizing the impact on the specification / UE (see Figure 3A).

[0034] Also, for example, for UE#2 in Figure 2, the XDD resources can be set to the same as the existing UL resources (e.g., by using Frequency Domain Resource Allocation (FDRA) to avoid using part of the DL resources), thereby minimizing the impact on the specifications / UE (see Figure 3B).

[0035] However, each UE needs to know whether resources are being used for XDD operations.

[0036] For example, for UE#1 as shown in Figure 2, the overlapping portion of the DL and UL in the TDD band (which may be called the XDD portion) can be configured as DL. However, it is unclear whether the frequency resources of the XDD portion should be configured separately from the frequency resources of the DL-only portion (e.g., the DL portion other than the XDD portion).

[0037] Since the UL part of the frequency resources of the XDD part can be used by other UEs (e.g., UE #2 in Figure 2) for UL transmission, there is a concern that CLI may occur if DL reception is performed in that part (UL part of the XDD part).In addition, it is being considered to disable DL resource allocation to that part in order to allocate the remaining resources other than that part to a single UE.

[0038] In other words, it is considered necessary to set DL resources in XDD separately from DL in TDD bands.

[0039] In addition, if it is necessary to handle DL resources in XDD and DL resources that are not XDD separately, it is being considered to configure these resources as separate frequency resources (e.g., DL BWP) and introduce a BWP adaptation mechanism to switch between these resources.

[0040] However, requiring UE capabilities for multiple BWP configuration and BWP adaptation may be undesirable due to differences between the functionality required for XDD operation and the functionality required for multiple BWP operation.

[0041] The same can be said for UL. For example, for UE#2 as shown in Figure 2, the overlapping portion of DL and UL in the TDD band (which may be called the XDD portion) can be configured as UL. However, it is not clear whether the frequency resources of the XDD portion should be configured separately from the frequency resources of the UL-only portion (e.g., the UL portion other than the XDD portion).

[0042] For example, to minimize the negative impact of CLI, it is being considered to configure UL transmission (eg, filtering) in the XDD portion differently than UL resources that are not part of the XDD portion.

[0043] In other words, it is considered necessary to set UL resources in XDD separately from UL in TDD band.

[0044] In addition, if it is necessary to handle UL resources in XDD and UL resources that are not XDD separately, it is being considered to configure these resources as separate frequency resources (e.g., UL BWP) and introduce a BWP adaptation mechanism to switch between these resources.

[0045] However, since the functionality required for XDD operation differs from the functionality required for operation with multiple BWPs, it may not be desirable to require existing UE capabilities for multiple BWP configuration and BWP adaptation for XDD operation.

[0046] Furthermore, when the link direction (DL / UL / flexible) is set / instructed, it is not clear whether each UE can use part of the frequency resources. If the availability of frequency resources is not clear, appropriate transmission and reception cannot be performed, which may result in a decrease in communication quality / communication throughput.

[0047] Therefore, the inventors have conceived a method for controlling XDD operation and the availability of link directions and partial frequency resources that does not exceed UE capabilities and / or inefficiencies (e.g., BWP switching delays).

[0048] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0049] (Wireless communication method) The DL signal / channel in the present disclosure may be transmitted using unicast or may be transmitted using multicast / broadcast to multiple UEs, and the multicast / broadcast / unicast configuration may be performed using higher layer signaling.

[0050] In the present disclosure, A / B may mean at least one of A and B. In the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0051] In the present disclosure, higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and the like, or a combination thereof.

[0052] The MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0053] The physical layer signaling may be, for example, downlink control information (DCI).

[0054] In the present disclosure, the terms port, antenna, antenna port, panel, beam, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), spatial relationship information, spatial relationship, state of Transmission Configuration Indication (TCI) (TCI-state), Quasi-Co-Location (QCL) assumption, Control Resource Set (CORESET), PDSCH, codeword, base station, predetermined antenna port (e.g., Demodulation Reference Signal (DMRS) port), predetermined antenna port group (e.g., DMRS port group), predetermined group (e.g., Code Division Multiplexing (CDM) group, predetermined reference signal group, CORESET group, panel group, beam group, spatial relationship group, PUCCH group), and CORESET pool may be interpreted as interchangeable.

[0055] In the present disclosure, reception of DL signals / channels and transmission of UL signals / channels may be transmitted and received using the same BWP / CC / band / operating band, or may be transmitted and received using different BWP / CC / band / operating band. In the following drawings of the present disclosure, a configuration for one CC will be described, but the number of resources in the frequency direction is not limited to this. In the present disclosure, the terms BWP, CC, cell, serving cell, band, carrier, operating band, PRG, PRB, RB, RE, and resource may be interchangeable.

[0056] In the present disclosure, A overlaps with B, A overlaps with B, and at least a portion of A overlaps with at least a portion of B may be read interchangeably.

[0057] Each embodiment of the present disclosure may be applied under at least one of the following conditions: when a UE reports UE capabilities corresponding to at least one function / capability in each embodiment to a NW; and when a UE capability corresponding to at least one function / capability in each embodiment is configured / activated / instructed to the UE by higher layer signaling. Each embodiment of the present disclosure may be applied when a specific higher layer parameter is configured / activated / instructed to the UE.

[0058] In this disclosure, the time domain (period) in which DL resources and UL resources within one CC of a TDD band are simultaneously available, the XDD portion, and the XDD period may be interpreted interchangeably. DL / UL resources in the XDD portion may be referred to as XDD DL / UL resources or XDD DL / UL. DL / UL resources in which the DL and UL of a TDD band do not overlap in time may be interpreted as non-XDD DL / UL resources, pure DL / UL resources, non-XDD DL / UL resources, new DL / UL resources, etc. XDD operation may refer to operation during a period in which XDD DL / UL resources are configured, or may refer to operation of the entire TDD in which XDD can be used.

[0059] Furthermore, in the present disclosure, DL / UL BWP in the TDD band, DL / UL BWP defined up to Rel. 15 / 16, and normal DL / UL BWP may be interpreted as interchangeable.

[0060] In the present disclosure, the terms drop, abort, cancel, puncture, rate match, etc. may be read interchangeably.

[0061] First Embodiment In the first embodiment, frequency resources for XDD DL will be described.

[0062] <<Embodiment 1-1>> [Embodiment 1-1-1] In embodiment 1-1, a DL BWP (new DL BWP, DL BWP for XDD) using continuous or discontinuous PRBs may be configured in XDD operation. A DL BWP may be configured in the UE using continuous or discontinuous PRBs in XDD operation.

[0063] In this disclosure, an example of BWP using XDD will be mainly described in which one UL resource is allocated to be sandwiched between two DL resources in the frequency domain of one CC as shown in FIG. 2, but the arrangement / allocation of DL / UL resources is not limited to this example. One DL resource may be allocated to be sandwiched between two UL resources. Allocation of two DL resources in the frequency domain of one CC may mean that a DL BWP using non-contiguous PRBs is configured. Conversely, allocation of one DL resource in the frequency domain of one CC may mean that a DL BWP using contiguous PRBs is configured.

[0064] Regarding the PRB configuration of the DL BWP, the UE may be configured with total frequency resources (contiguous frequency resources including frequency resources usable for DL ​​and frequency resources unavailable for DL) and frequency resources unavailable for DL ​​resources. The total frequency resources may be configured using existing BWP parameters, such as (the position of) the start PRB and the number of PRBs (bandwidth). The frequency resources unavailable for DL ​​resources may be configured using, for example, (the position of) the start PRB and the number of PRBs (bandwidth).

[0065] Furthermore, for configuring PRBs for DL ​​BWP, the UE may be configured with available frequency resources. Frequency resources that cannot be used for DL ​​resources may be configured using multiple (e.g., two) sets of (the position of) the start PRB and the number of PRBs (bandwidth), for example.

[0066] [Embodiment 1-1-2] The new DL BWP may be configured as a supplementary DL BWP of a normal DL BWP. The supplementary DL BWP may be associated with the normal DL BWP. The supplementary DL BWP may be referred to as a supplemental DL BWP, an additional DL BWP, etc.

[0067] Configuration restrictions may be defined for the normal DL BWP and the supplemental DL BWP. For example, the normal DL BWP and the supplemental DL BWP may share at least one of the following: a center frequency, a subcarrier spacing, a subset of frequency resources (start position / bandwidth), and a configuration related to the DL BWP configuration. The configuration related to the DL BWP configuration may be at least one of a PDCCH configuration, a PDSCH configuration, an SPS configuration, and a radio link monitoring (RLM) configuration. Furthermore, for example, the normal DL BWP and the supplemental DL BWP may have at least one of the following different configurations: a center frequency, a subcarrier spacing, a subset of frequency resources (start position / bandwidth), and a configuration related to the BWP configuration.

[0068] The association between the new DL BWP (auxiliary DL BWP) and the normal DL BWP may be configured in a specific numerical ratio. The new DL BWP (auxiliary DL BWP) and the normal DL BWP may be associated at a 1:1 ratio, a 1:N ratio (N is an integer equal to or greater than 2), an N:1 ratio, or an N:M ratio (M is an integer equal to or greater than 2, and N=M).

[0069] Furthermore, the setting of the new DL BWP does not have to be associated with the normal DL BWP.

[0070] [Embodiment 1-1-3] The DL BWP may be configured together with a UL BWP (new UL BWP, UL BWP for XDD, paired UL BWP) configured with a PRB not allocated to the DL BWP.

[0071] Furthermore, the setting of the new DL BWP may be performed in conjunction with at least one of the setting of the UL BWP (new UL BWP) in the XDD and the setting of the normal UL BWP.

[0072] Furthermore, the establishment of a new DL BWP may not be associated with the establishment of a new UL BWP, in other words, the establishment of a new DL BWP and the establishment of a new UL BWP may be performed separately.

[0073] Note that the same restrictions may be imposed between the DL BWP configuration for XDD and the associated UL BWP configuration as between the normal DL BWP configuration and the normal UL BWP configuration. Also, the restrictions may be different between the DL BWP configuration for XDD and the associated UL BWP configuration than between the normal DL BWP configuration and the normal UL BWP configuration. For example, the restriction may be that the center frequencies of the DL BWP configuration for XDD and the associated UL BWP configuration are different. Also, the restriction may be that the PRBs of the DL BWP configuration for XDD and the associated UL BWP configuration do not overlap in the frequency domain.

[0074] Embodiment 1-2 In embodiment 1-2, semi-static configuration of the switching pattern of DL BWP in the time domain may be supported.

[0075] According to this switching pattern, switching between pure DL resources (DL resources / DL BWPs in which all frequencies within the DL resources are available for DL) and DL resources in XDD (new DL BWPs) can be performed without requiring dynamic BWP switch instructions and the delay time required for existing switching.

[0076] [Embodiment 1-2-1] The switching pattern of the DL BWP may be based on the TDD configuration.

[0077] The UE may determine / judge the DL BWP switching pattern based on an RRC information element related to the TDD configuration (e.g., TDD-UL-DL-Config). For example, the DL BWP switching pattern may be included in the RRC information element related to the TDD configuration (e.g., TDD-UL-DL-Config).

[0078] For example, in addition to the normal DL / UL / FL, information about DL / UL related to XDD may be included in an RRC information element related to the TDD configuration (for example, TDD-UL-DL-Config).

[0079] In the present disclosure, DL / UL for XDD, unavailable DL / UL resources, available DL / UL resources, XDD DL / UL, partial DL / UL, partially available DL / UL resources, partially unavailable DL / UL resources, invalid DL / UL resources, invalid resource blocks, invalid resource block patterns, and partial patterns may be read as interchangeable.

[0080] The UE may also determine / judge the DL BWP switching pattern based on an RRC information element (e.g., BWP-Config) related to the BWP configuration. For example, the DL BWP switching pattern may be included in the RRC information element (e.g., BWP-Config) related to the BWP configuration.

[0081] For example, an RRC information element (e.g., BWP-Config) related to the configuration of BWP may include the periodicity and (time) offset of DL resources in XDD. The periodicity and offset may be expressed in a specific time unit (e.g., slot, symbol) or may be expressed in an arbitrary time.

[0082] The UE may also determine / judge the DL BWP switching pattern based on RRC information elements related to BWP configuration in XDD. The RRC control elements may be parameters specified in Rel. 17 or later, or may be parameters other than the existing RRC information elements related to TDD configuration (e.g., TDD-UL-DL-Config) and BWP configuration (e.g., BWP-Config).

[0083] [Embodiment 1-2-2] Restrictions on the setting of the switching pattern of the DL BWP may be specified.

[0084] Restrictions on the time domain location of XDD DL resources may be specified, for example, DL resources in XDD may be restricted to be configured after normal DL resources and / or before normal UL resources.

[0085] Furthermore, for example, DL resources in XDD may be limited to be set only to specific resources. The specific resources may be, for example, resources (e.g., slots) to which UL and DL are allocated. The specific resources may also be, for example, resources (e.g., slots) in which the remaining portion other than DL resources in XDD is normally used as UL resources (symbols). The specific resources may also be, for example, slots that do not include SS / PBCH blocks.

[0086] For example, DL resources in XDD may be restricted to be set at least one of before normal DL resources and after normal UL resources.

[0087] The existing (defined in Rel.15 / 16) DL / UL BWP configuration and BWP switching are performed based on configuration / instructions from the network (e.g., base station). The existing DL / UL BWP configuration and BWP switching may also be performed based on a predetermined timer and a specific DCI format (e.g., any of DCI formats 0_1, 0_2, 1_1, and 1_2).

[0088] Fig. 4A is a diagram showing an example of switching of existing DL / UL BWPs (corresponding to pure DL BWPs and pure UL BWPs). In the example shown in Fig. 4A, a UE performs DL / UL BWP switching in TDD (switching from DL BWP#1 to DL BWP#2 and switching from UL BWP#1 to UL BWP#2) based on a predetermined timer / specific DCI. In Fig. 4A, the switching increases BWP frequency resources.

[0089] In Fig. 4A, the center frequency of the DL BWP in TDD is equal to the center frequency of the UL BWP, as indicated by the dashed line. In Fig. 4B, the center frequency of the DL BWP in TDD is equal to the center frequency of the UL BWP, as indicated by the dashed line. In this disclosure, a case will be described in which the center frequencies of the DL BWP and the UL BWP are equal, but the center frequencies of the DL BWP and the UL BWP may be different.

[0090] The following explains how to set DL / UL BWP and switch BWP in XDD.

[0091] The UE may be configured with DL / UL BWP (BWP pattern) in XDD using higher layer signaling (RRC signaling). The UE may be configured / instructed to configure XDD DL / UL BWP and switch BWP based on at least one of the BWP switching pattern configuration included in the RRC configuration, a predetermined timer, and a specific DCI format (e.g., BWP configuration / instruction included in the DCI).

[0092] Fig. 4B is a diagram showing an example of switching between DL / UL BWPs in XDD. In the example shown in Fig. 4B, a UE is configured with DL BWP#1 as a pure DL BWP and DL BWP#1a as a DL BWP in XDD. Also, in the example shown in Fig. 4B, a UE is configured with UL BWP#1 as a pure UL BWP and UL BWP#1a as a UL BWP in XDD.

[0093] DL BWP#1 and DL BWP#1a may be associated with each other. Also, UL BWP#1 and UL BWP#1a may be associated with each other. Also, DL BWP#1 and UL BWP#1 may be associated with each other. DL BWP#1a and UL BWP#1a may be associated with each other.

[0094] In the example shown in Figure 4B, a DL / UL BWP switching pattern is configured for the UE. The switching pattern may be information for configuring switching between DL / UL BWP#1 and DL / UL BWP#1a. The switching pattern may be information indicating at least one of the timing of switching between normal DL / UL resources and DL / UL resources in XDD, and the period of a configuration including normal DL / UL resources and DL / UL resources in XDD. The UE determines / judges DL and UL resources based on the switching pattern.

[0095] Embodiments 1-3 In embodiments 1-3, dynamic adaptation of DL BWP between pure DL resources and DL resources in XDD may be supported.

[0096] The UE may decide / judge to perform dynamic adaptation of the DL BWP between the pure DL resources and the DL resources in XDD based on at least one of the DCI, the MAC CE, and certain conditions.

[0097] Dynamic adaptation of DL BWP for XDD may mean switching between normal DL BWP and DL BWP in XDD.

[0098] Dynamic adaptation of DL BWPs for XDDs may mean activation / deactivation of DL BWPs in XDDs relative to normal DL BWPs.

[0099] After receiving the instruction regarding DL BWP adaptation, the UE may apply DL BWP adaptation only for a specific period (embodiment 1-3-1). The specific period may be one or more slots / symbols. The specific period may be indicated by an offset from the slot / symbol where the instruction is transmitted / received. The specific period may be indicated by a specific number of slots / symbols. The specific period / offset may be predefined in a specification, configured / indicated by higher layer signaling, or dynamically indicated by DCI.

[0100] Furthermore, after receiving an instruction regarding DL BWP adaptation, the UE may apply DL BWP adaptation until receiving the next instruction regarding DL BWP adaptation (embodiment 1-3-2). In other words, after receiving an instruction regarding DL BWP adaptation, the UE may apply DL BWP adaptation until receiving an instruction indicating cancellation / override of the instruction.

[0101] Furthermore, after receiving the instruction regarding the DL BWP adaptation, the UE may apply the DL BWP adaptation until a specific condition is met (embodiment 1-3-3). The specific condition may be, for example, the expiration of a specific timer.

[0102] At least two of the methods described in the above embodiments 1-3-1 to 1-3-3 may be applied in combination.

[0103] At least one of the switching delay and indication mechanism / condition for BWP adaptation may be the same as or different from at least one of the existing (defined in Rel. 15 / 16) switching delay and indication mechanism / condition. For example, the delay required for switching DL BWP adaptation in XDD may be set / defined to be shorter (or longer) than the existing delay time.

[0104] Figure 5 is a diagram showing an example of BWP adaptation in XDD. In the example shown in Figure 5, DL BWP #1 and DL BWP #2 are configured as pure DL BWPs for the UE. DL BWP #1a and DL BWP #2a are configured as DL BWPs in XDD for the UE. UL BWP #1 and UL BWP #2 are configured as pure UL BWPs for the UE. UL BWP #1a and UL BWP #2a are configured as UL BWPs in XDD for the UE.

[0105] In the example shown in FIG. 5, similarly to FIGS. 4A and 4B, the center frequencies of the DL BWP and UL BWP are indicated by dashed lines, and these center frequencies are the same for DL ​​and UL.

[0106] DL BWP#1 and DL BWP#1a may be associated with each other, and UL BWP#1 and UL BWP#1a may be associated with each other.

[0107] DL BWP#2 and DL BWP#2a may be associated with each other, and UL BWP#2 and UL BWP#2a may be associated with each other.

[0108] DL BWP#1 and UL BWP#1 may be associated with each other. DL BWP#1a and UL BWP#1a may be associated with each other.

[0109] DL BWP#2 and UL BWP#2 may be associated with each other. DL BWP#2a and UL BWP#2a may be associated with each other.

[0110] In the example shown in Figure 5, the UE receives an instruction regarding adaptation of the DL / UL BWP. The UE performs, for example, switching of the DL / UL BWP based on the instruction. For example, the UE performs switching between DL / UL BWP #1 and DL / UL BWP #1a and switching between DL / UL BWP #2 and DL / UL BWP #2a based on the instruction.

[0111] 5, the UE receives information instructing switching between DL / UL BWP#1 and DL / UL BWP#2. In the present disclosure, switching of existing BWPs and switching of DL / UL BWPs in normal DL / UL BWPs and XDD may be performed in combination. The combination of switching may be performed using common RRC information elements / MAC CE / DCI or different RRC information elements / MAC CE / DCI.

[0112] 4A, 4B, and 5, the UL BWP bandwidth is narrower (smaller) than the DL BWP bandwidth, but the DL BWP bandwidth and the UL BWP bandwidth may be equal, or the DL BWP bandwidth may be narrower than the UL BWP bandwidth. For example, a configuration in which the UL BWP bandwidth is narrower than the DL BWP bandwidth is suitable for application in terms of UL coverage and DL communication capacity.

[0113] Embodiments 1-4 UE capabilities for supporting at least one of the configuration and adaptation of DL BWP in XDD operation may be specified, which may be common to or different from the UE capabilities for supporting at least one of the configuration and adaptation of UL BWP in XDD operation.

[0114] The UE capability may be different from the UE capability for operation with respect to multiple BWPs, and may be a capability supported by a UE that supports the UE capability for operation with respect to multiple BWPs.

[0115] The UE capabilities may also be reported to the network per UE / per band / per band in multiple band units / per feature set (FS) (per band in multiple band combination units) / per cell in FS units (per CC per band in multiple band combination units).

[0116] When a DL BWP in XDD is configured / activated for a specific period (e.g., slot / symbol), the UE may interpret the frequency domain resource allocation (FDRA) for that specific period in the same way as the corresponding normal DL BWP. That is, the PRB indexes (numbering / ordering) assigned to the normal DL BWP and the DL BWP in XDD may be the same. In this case, the UE may assume that no DL channel / signal is assigned by the FDRA to an unavailable PRB. Alternatively, even if a DL channel / signal is assigned by the FDRA to an unavailable PRB, the UE may not perform reception processing for the assigned DL channel / signal.

[0117] Furthermore, when a DL BWP in XDD is configured / activated for a specific period, the UE may interpret the FDRA for the specific period differently from the corresponding normal DL BWP. That is, the PRB indexes (numbering / ordering) assigned to the normal DL BWP and the DL BWP in XDD may be different. For PRBs in the DL BWP in XDD that are unavailable compared to the corresponding normal DL BWP, the PRB indexes may not be numbered / ordered. In this case, the PRBs of the DL BWP in XDD may be referred to as virtually consecutive PRBs.

[0118] Although the above description is limited to PRB, the resources are not limited to this.

[0119] If at least some of the DL channels / signals are configured / scheduled outside the DL BWP in the configured / activated XDD, the UE may not expect to receive those DL channels / signals.

[0120] Furthermore, if at least some of the DL channels / signals are configured / scheduled outside the DL BWP in the configured / activated XDD, the UE may not assume (expect) to receive at least some of the DL channels / signals configured / scheduled outside the DL BWP. In this case, the UE may perform puncturing / rate matching on the DL channels / signals. The puncturing / rate matching may be performed based on specifications or may be configured / indicated by higher layer signaling (RRC signaling).

[0121] In the present disclosure, the UE does not need to assume (expect) that transmission / reception (e.g., repetition, semi-persistent scheduling (SPS)) that crosses at least one of the boundaries between normal DL / UL BWP and DL / UL BWP in XDD, the boundary where DL / UL BWP switching occurs, and the slot boundary will be scheduled / configured / activated.

[0122] In addition, in the present disclosure, when transmission / reception is scheduled / configured / activated across at least one boundary between a normal DL / UL BWP and a DL / UL BWP in XDD, a boundary where DL / UL BWP switching occurs, or a slot boundary, the UE may cancel the transmission / reception. The UE may determine the cancellation based on the timing of the boundary (i.e., canceling part of the transmission / reception), or may determine the cancellation regardless of the timing of the boundary (i.e., canceling the entire transmission / reception).

[0123] According to the first embodiment, the DL BWP can be set appropriately in the XDD operation.

[0124] <Second embodiment> In the second embodiment, frequency resources of XDD UL will be described.

[0125] <<Embodiment 2-1>> [Embodiment 2-1-1] In embodiment 2-1, in XDD operation, a UL BWP (new UL BWP, UL BWP for XDD) may be configured using consecutive or discontinuous PRBs. In XDD operation, a UE may be configured with a UL BWP using consecutive or discontinuous PRBs.

[0126] As described in the above embodiment 1-1-1, an example in which one UL resource is allocated to be sandwiched between two DL resources in the frequency domain of one CC as shown in FIG. 2 will be mainly described, but the arrangement / allocation of DL / UL resources is not limited to this example. One DL resource may also be allocated to be sandwiched between two UL resources. In the frequency domain of one CC, allocation of one UL resource may mean that a UL BWP using contiguous PRBs is configured. Conversely, in the frequency domain of one CC, allocation of two UL resources may mean that a UL BWP using discontiguous PRBs is configured. For example, by allocating two UL resources in the frequency domain of one CC, frequency hopping of UL transmission can be suitably applied.

[0127] At this time, the UE may recognize that the UL BWP in the XDD and the normal UL BWP are different configurations, and the UE may switch the UL BWP without dynamic indication / switching delay for the normal UL BWP.

[0128] Regarding the PRB configuration of the UL BWP, the UE may be configured with the total frequency resources (contiguous frequency resources including frequency resources usable for UL and frequency resources unusable for UL) and the frequency resources (start position / bandwidth) that cannot be used for UL resources. The total frequency resources may be configured using existing BWP parameters, such as the (position) of the start PRB and the number of PRBs (bandwidth). The frequency resources that cannot be used for UL resources may be configured using the (position) of the start PRB and the number of PRBs (bandwidth).

[0129] Furthermore, for the configuration of PRBs of the UL BWP, the UE may be configured with available frequency resources (start position / bandwidth). Frequency resources that cannot be used for UL resources may be configured using multiple (e.g., two) sets of (the position of) the start PRB and the number of PRBs (bandwidth).

[0130] [Embodiment 2-1-2] The new UL BWP may be configured as a supplementary UL BWP to the normal UL BWP. The supplementary UL BWP may be associated with the normal UL BWP. The supplemental UL BWP may be referred to as a supplemental UL BWP, an additional UL BWP, etc.

[0131] Configuration restrictions may be defined for the normal UL BWP and the supplemental UL BWP. For example, the normal UL BWP and the supplemental UL BWP may share at least one of the following: center frequency, subcarrier spacing, a subset of frequency resources (start position / bandwidth), and configuration related to the UL BWP configuration. The configuration related to the UL BWP configuration may be at least one of the following: PUCCH configuration (PDCCH Config), PUSCH configuration (PDSCH Config), configured grant configuration (Configured Grant Config), SRS configuration (SRS Config), and radio link monitoring (RLM) configuration (RLM Config). Furthermore, for example, the normal UL BWP and the supplemental DL BWP may have at least one of the following: center frequency, subcarrier spacing, a subset of frequency resources (start position / bandwidth), and configuration related to the BWP configuration configured separately.

[0132] The association between the new UL BWP (supplementary UL BWP) and the normal UL BWP may be configured in a specific numerical ratio. The new UL BWP (supplementary UL BWP) and the normal UL BWP may be associated at a 1:1 ratio, a 1:N ratio (N is an integer of 2 or more), an N:1 ratio, or an N:M ratio (M is an integer of 2 or more, and N=M).

[0133] Additionally, the establishment of a new UL BWP may be performed by establishing a UL BWP that is not normally associated with the UL BWP.

[0134] [Embodiment 2-1-3] The UL BWP may be configured together with a DL BWP (new DL BWP, DL BWP for XDD, paired DL BWP) configured with a PRB not allocated to the UL BWP.

[0135] Furthermore, the setting of the new UL BWP may be performed in conjunction with at least one of the setting of the DL BWP in the XDD and the setting of the normal DL BWP.

[0136] Furthermore, the establishment of a new UL BWP may not be associated with the establishment of a new DL BWP, in other words, the establishment of a new UL BWP and the establishment of a new DL BWP may be performed separately.

[0137] Note that the same restrictions may be imposed between the UL BWP configuration for XDD and the associated DL BWP configuration as between the normal UL BWP configuration and the normal DL BWP configuration. Also, the restrictions may be different between the UL BWP configuration for XDD and the associated DL BWP configuration than between the normal UL BWP configuration and the normal DL BWP configuration. For example, the restriction may be that the center frequencies of the UL BWP configuration for XDD and the associated DL BWP configuration are different. Also, the restriction may be that the PRBs of the UL BWP configuration for XDD and the associated DL BWP configuration do not overlap in the frequency domain.

[0138] <<Embodiment 2-2>> In embodiment 2-2, semi-static configuration of the switching pattern of the UL BWP in the time domain may be supported.

[0139] According to this switching pattern, switching between pure UL resources (UL resources / UL BWPs in which all frequencies within the UL resources are available for UL) and UL resources in XDD (new UL BWPs) can be performed without requiring dynamic BWP switch instructions and the delay time required for existing switching.

[0140] [Embodiment 2-2-1] The switching pattern of the UL BWP may be based on the TDD configuration.

[0141] The UE may determine / judge the DL BWP switching pattern based on an RRC information element related to the TDD configuration (e.g., TDD-UL-DL-Config). For example, the UL BWP switching pattern may be included in the RRC information element related to the TDD configuration (e.g., TDD-UL-DL-Config).

[0142] For example, in addition to the normal DL / UL / FL, information about DL / UL related to XDD may be included in an RRC information element related to the TDD configuration (for example, TDD-UL-DL-Config).

[0143] In the present disclosure, DL / UL for XDD, unavailable DL / UL resources, available DL / UL resources, XDD DL / UL, partial DL / UL, partially available DL / UL resources, partially unavailable DL / UL resources, invalid DL / UL resources, invalid resource blocks, invalid resource block patterns, and partial patterns may be read as interchangeable.

[0144] The UE may also determine / judge the UL BWP switching pattern based on an RRC information element related to the BWP configuration (e.g., BWP-Config). For example, the UL BWP switching pattern may be included in the RRC information element related to the BWP configuration (e.g., BWP-Config).

[0145] For example, an RRC information element (e.g., BWP-Config) related to the configuration of BWP may include the periodicity and (time) offset of UL resources in XDD. The periodicity and offset may be expressed in a specific time unit (e.g., slot, symbol) or may be expressed in an arbitrary time.

[0146] The UE may also determine / judge the UL BWP switching pattern based on RRC information elements related to BWP configuration in XDD. The RRC control elements may be parameters specified in Rel. 17 or later, or may be parameters other than the existing RRC information elements related to TDD configuration (e.g., TDD-UL-DL-Config) and BWP configuration (e.g., BWP-Config).

[0147] [Embodiment 2-2-2] Restrictions on the setting of the switching pattern of the UL BWP may be specified.

[0148] Restrictions on the time domain location of XDD UL resources may be specified, for example, UL resources in XDD may be restricted to be located after regular UL resources and / or before regular DL resources.

[0149] Furthermore, for example, UL resources in XDD may be limited to be set only to specific resources. The specific resources may be, for example, resources (e.g., slots) to which UL and DL are allocated. The specific resources may also be, for example, resources (e.g., slots) in which the remaining portion other than the UL resources in XDD is normally used as UL resources (symbols). The specific resources may also be, for example, slots that do not include SS / PBCH blocks.

[0150] For example, UL resources in XDD may be restricted to be set at least one of before normal UL resources and after normal DL resources.

[0151] The DL / UL BWP setting and BWP switching in XDD are the same as those described in embodiment 1-2-2.

[0152] <<Embodiment 2-3>> In embodiments 2-3, dynamic adaptation of UL BWP between pure UL resources and UL resources in XDD may be supported.

[0153] The UE may decide / judge to perform dynamic adaptation of UL BWP between pure UL resources and UL resources in XDD based on at least one of DCI, MAC CE, and specific conditions.

[0154] Dynamic adaptation of the UL BWP for XDD may mean switching between a normal UL BWP and a UL BWP in XDD.

[0155] Dynamic adaptation of a UL BWP for an XDD may mean activation / deactivation of a UL BWP in the XDD relative to a normal UL BWP.

[0156] After receiving the instruction regarding UL BWP adaptation, the UE may apply the UL BWP adaptation only for a specific period of time (embodiment 2-3-1). The specific period of time may be one or more slots / symbols. The specific period of time may be indicated by an offset from the slot / symbol where the instruction is transmitted / received. The specific period of time may be indicated by a specific number of slots / symbols. The specific period of time / offset may be predefined in a specification, configured / notified by higher layer signaling, or dynamically indicated by DCI.

[0157] Furthermore, after receiving an instruction regarding UL BWP adaptation, the UE may apply UL BWP adaptation until receiving the next instruction regarding UL BWP adaptation (embodiment 2-3-2). In other words, after receiving an instruction regarding UL BWP adaptation, the UE may apply UL BWP adaptation until receiving an instruction indicating cancellation / override of the instruction.

[0158] Furthermore, after receiving the instruction regarding the adaptation of the UL BWP, the UE may apply the adaptation of the UL BWP until a specific condition is satisfied (embodiment 2-3-3). The specific condition may be, for example, the expiration of a specific timer.

[0159] At least two of the methods described in the above embodiments 2-3-1 to 2-3-3 may be applied in combination.

[0160] At least one of the switching delay and indication mechanism / condition for BWP adaptation may be the same as or different from at least one of the existing (defined in Rel. 15 / 16) switching delay and indication mechanism / condition. For example, the delay required for switching DL BWP adaptation in XDD may be set / defined to be shorter (or longer) than the existing delay time.

[0161] Embodiments 2-4 UE capabilities for supporting at least one of the configuration and adaptation of UL BWP in XDD operation may be specified, which may be common to or different from the UE capabilities for supporting at least one of the configuration and adaptation of DL BWP in XDD operation.

[0162] The UE capability may be different from the UE capability for operation with respect to multiple BWPs, and may be a capability supported by a UE that supports the UE capability for operation with respect to multiple BWPs.

[0163] In addition, the UE capabilities may be reported to the network per UE / per band / per feature set (FS) (per band in a multiple band unit) / per cell in a feature set (FS) unit (per CC per band in a multiple band combination unit).

[0164] When a UL BWP in the XDD is configured / activated for a specific period (e.g., slot / symbol), the UE may interpret the frequency domain resource allocation (FDRA) for the specific period as the same as the corresponding normal UL BWP. That is, the PRB indexes (numbering / ordering) assigned to the normal UL BWP and the UL BWP in the XDD may be the same. In this case, the UE may assume that no UL channel / signal is scheduled for an unavailable PRB by the FDRA. Alternatively, the UE may not perform transmission processing for the scheduled portion of the UL channel / signal even if the UL channel / signal is scheduled for an unavailable PRB by the FDRA.

[0165] Furthermore, when a UL BWP in XDD is configured / activated for a specific period, the UE may interpret the FDRA for the specific period differently from the corresponding normal UL BWP. That is, the PRB indexes (numbering / ordering) assigned to the normal UL BWP and the UL BWP in XDD may be different. For PRBs in the UL BWP in XDD that are unavailable compared to the corresponding normal UL BWP, the PRB indexes may not be numbered / ordered. In this case, the PRBs of the UL BWP in XDD may be referred to as virtually consecutive PRBs.

[0166] Although the above description is limited to PRB, the resources are not limited to this.

[0167] If at least a part of an UL channel / signal is configured / scheduled outside the UL BWP in the configured / activated XDD, the UE may determine not to transmit the UL channel / signal. The UE may not assume (expect) that at least a part of an UL channel / signal is configured / scheduled outside the UL BWP in the configured / activated XDD.

[0168] Furthermore, if at least some of the UL channels / signals are configured / scheduled outside the UL BWP in the configured / activated XDD, the UE may determine not to transmit at least some of the UL channels / signals configured / scheduled outside the UL BWP. In this case, the UE may perform puncturing / rate matching on the UL channels / signals. The puncturing / rate matching may be performed based on specifications or may be configured / indicated by higher layer signaling (RRC signaling).

[0169] According to the second embodiment, the UL BWP can be set appropriately in XDD operation.

[0170] <Third embodiment> "analysis" To achieve XDD operation, the existing configuration / instruction regarding slot format may be used to indicate slots for different link directions (DL ('D') / UL ('U') / Flexible ('F')) for different UEs.

[0171] In the examples of FIGS. 6A and 6B, first, the link direction 'DDFFU' is set by RRC for slots #0 to #4 of UE#1 and #2, respectively.

[0172] 6A, the DCI for UE#1 then indicates two 'F's as two 'D's in slots #2 and #3, allowing UE#1 to receive DL in slots #2 and #3.

[0173] To achieve XDD operation in slots #2 and #3, the base station may schedule UE #1 without PDSCH reception on some resources #1 within slots #2 and #3. If there is no explicit indication of resource #1 unavailability and periodic / semi-persistent SSB / CSI-RS is possible on resource #1, problems may occur with SSB / CSI-RS measurements.

[0174] In the example of Figure 6B, the DCI for UE #2 indicates two 'F's as two 'U's in slots #2 and #3, which allows UE #2 to transmit UL in slots #2 and #3.

[0175] To achieve XDD operation in slots #2 and #3, the base station may schedule UE #2 without PUSCH transmission on some resources #2 within slots #2 and #3. If there is no explicit indication that resource #2 is unavailable and the resource configuration for normal PUCCH / SRS on resource #2 is not limited to resource #1, problems may occur regarding PUSCH / SRS / PRACH transmission.

[0176] Different link directions of time resources (subframes / slots / minislots / symbols) may be indicated to different UEs.

[0177] To enable XDD operation on time resources designated 'D' for some UEs, some periodic / semi-persistent RS may be considered.

[0178] To enable XDD operation on time resources designated 'U' for some UEs, some UL channel / RS configurations may be considered.

[0179] In the present disclosure, partial availability, partial available indication, partial non-available indication, partially available DL frequency resources, partially available UL frequency resources, partially unavailable DL frequency resources, partially unavailable UL frequency resources, link direction (D / F / U) and combination of partial availability may be read as interchangeable.

[0180] <<Embodiment 3-1>> Based on the existing link direction (D / F / U) indication, a new type of indication (new indication) may be defined to indicate "partial availability" for a time unit. In this disclosure, a time unit may be a time resource having a certain length, such as a subframe / slot / minislot / symbol. In this disclosure, the partial availability indication may indicate whether some frequency resources (resource blocks / resource elements) of a component carrier / BWP are available for a specific link direction, or may indicate the frequency resources.

[0181] The new indication may be an RRC IE / MAC CE / DCI.

[0182] The new indication may be signaling separate from the signaling of the existing link direction indication, in other words, the RRC IE / MAC CE / DCI elements of the new indication (e.g., partial availability indication, partial frequency resource indication, etc.) may be separated from the RRC IE / MAC CE / DCI elements of the existing link direction indication (e.g., D / F / U indication).

[0183] The new indication may be signaling combined with the signaling of an existing link direction indication. In other words, an RRC IE / MAC CE / DCI indicating a combination of the existing link direction indication and the new indication (e.g., an indication of partial availability and D / F / U, or an indication of D / F / U / partially available D / partially available U) may be notified.

[0184] The UE may be indicated either a "partial available indication" (available fractional frequency resources) and a 'D' (time unit for DL) indication (indication of partial frequency resources available for DL, indication of partially available DL frequency resources) or a "partial non-available indication" (unavailable fractional frequency resources) and a 'D' (time unit for DL) indication (indication of partial frequency resources unavailable for DL, indication of partially unavailable DL frequency resources).

[0185] The UE may be indicated either a "partially available indication" (available fractional frequency resources) and an indication of 'U' (time unit for UL) (indication of partial frequency resources available for UL, indication of partially available UL frequency resources) or a "partially unavailable indication" (unavailable fractional frequency resources) and an indication of 'U' (time unit for UL) (indication of partial frequency resources unavailable for UL, indication of partially unavailable UL frequency resources).

[0186] The UE may be indicated at least one of a "partial availability indication" (available fractional frequency resources) and an indication of 'D' (time unit for DL) (indicating partially available DL frequency resources) and an indication of a "partial availability indication" (available fractional frequency resources) and an indication of 'U' (time unit for UL) (indicating partially available UL frequency resources). Based on the indication of partially available DL frequency resources within a time unit, the UE may identify partially unavailable DL frequency resources within that time unit (fractional frequency resources other than the partially available DL frequency resources within that time unit). Based on the indication of partially available UL frequency resources within a time unit, the UE may identify partially unavailable DL frequency resources within that time unit (fractional frequency resources other than the partially available UL frequency resources within that time unit).

[0187] The UE may be indicated at least one of a "partially unavailable indication" (unavailable partial frequency resources) and an indication of 'D' (downstream time unit) (indicating partially unavailable DL frequency resources) and an indication of a "partially unavailable indication" (unavailable partial frequency resources) and 'U' (upstream time unit) (indicating partially unavailable DL frequency resources). Based on the indication of partially unavailable DL frequency resources within a time unit, the UE may identify partially available DL frequency resources within that time unit (partial frequency resources other than the partially unavailable DL frequency resources within that time unit). Based on the indication of partially unavailable UL frequency resources within a time unit, the UE may identify partially available UL frequency resources within that time unit (partial frequency resources other than the partially unavailable UL frequency resources within that time unit).

[0188] If a time unit is indicated with a "partially available indication" and 'D' (indicating partially available DL frequency resources), the UE may assume reception of DL channels / RS on the partially available DL frequency resources within that time unit, but may not assume reception of DL channels / RS on the partially unavailable DL frequency resources within that time unit. If a time unit is indicated with a "partially unavailable indication" and 'D' (indicating partially unavailable DL frequency resources), the UE may assume reception of DL channels / RS on the partially available DL frequency resources within that time unit, but may not assume reception of DL channels / RS on the partially unavailable DL frequency resources within that time unit.

[0189] If a time unit is indicated as "partially unavailable" and 'U' (indicating partially unavailable UL frequency resources), the UE may assume reception of DL channels / RS on the partially unavailable UL frequency resources within that time unit, and may not assume reception of DL channels / RS on the partially available UL frequency resources within that time unit.

[0190] The partially available DL frequency resources (P_AD) can be configured / indicated by an RRC IE / MAC CE, for example, the configuration / indication of the partially available DL frequency resources may disable some frequency resources (partially unavailable DL frequency resources (P_ND)) (FIG. 7A) or may combine two sets of frequency resources (FIG. 7B).

[0191] A common fractional available DL frequency resource may be configured / indicated for multiple time units (e.g., time units #0 and #1) (FIG. 7A). Different fractional available DL frequency resources may be configured / indicated for multiple time units (e.g., time units #0 and #1) (FIG. 7B).

[0192] If a time unit is indicated with a "partially available indication" and 'U' (indicating partially available UL frequency resources), the UE may assume that it will transmit UL channels / RS on the partially available UL frequency resources within that time unit, and may not assume that it will transmit UL channels / RS on the partially unavailable UL frequency resources within that time unit. If a time unit is indicated with a "partially unavailable indication" and 'U' (indicating partially unavailable UL frequency resources), the UE may assume that it will transmit UL channels / RS on the partially available UL frequency resources within that time unit, and may not assume that it will transmit UL channels / RS on the partially unavailable UL frequency resources within that time unit.

[0193] If a time unit is indicated as "partially unavailable" and 'D' (partially unavailable DL frequency resources are indicated), the UE may assume that it will transmit UL channels / RS on the partially unavailable DL frequency resources within that time unit, and may not assume that it will transmit UL channels / RS on the partially available DL frequency resources within that time unit.

[0194] The partially available UL frequency resources (P_AU) can be configured / indicated by an RRC IE / MAC CE, for example, the configuration / indication of the partially available UL frequency resources may disable some frequency resources (partially unavailable UL frequency resources (P_NU)) (FIG. 7C) or may combine two sets of frequency resources (FIG. 7D).

[0195] A common fractional available UL frequency resource may be configured / indicated for multiple time units (e.g., time units #0 and #1) (FIG. 7C). Different fractional available UL frequency resources may be configured / indicated for multiple time units (e.g., time units #0 and #1) (FIG. 7D).

[0196] According to this embodiment, it is possible to set / indicate the link direction for each time resource, and also to flexibly set / indicate the partially available or unavailable frequency resources.

[0197] <<Embodiment 3-2>> This section describes UE behavior in partially available DL time units, which may be a "partially available indication" and 'D' (partially available DL frequency resources, P_AD) or a "partially unavailable indication" and 'U' (partially unavailable UL frequency resources, P_UL).

[0198] -PDSCH reception The UE may assume that it is scheduled for PDSCH reception only on the partially available DL frequency resources (or partially unavailable UL frequency resources) within the partially available DL time unit. The UE may perform rate matching around the partially unavailable DL frequency resources (or partially available UL frequency resources) within the partially available DL time unit.

[0199] For PDSCH reception within a partially available DL time unit, the UE may follow at least one of options 1 to 3.

[0200] [Option 1] The frequency resource configuration and the mapping to the frequency domain resource assignment (FDMA indication in the DCI) for the normal DL time unit (time unit not indicated with a partial availability indication and indicated with 'D') and the partially available DL time unit are common (consistent). The UE may not assume that the FDRA indication allocates PDSCH resources that overlap with partially unavailable DL frequency resources (or partially available UL frequency resources) in the partially available DL time unit. It may be an error case if the FDRA field allocates PDSCH resources that overlap with partially unavailable DL frequency resources in the partially available DL time unit.

[0201] [Option 2] The frequency resource configuration and the mapping to the frequency domain resource allocation (FDMA indication in the DCI) for normal DL time units (time units not indicated with a partial availability indication and indicated with 'D') and partially available DL time units are common (consistent). The UE may perform rate matching around the partially unavailable DL frequency resources (or partially available UL frequency resources) within the partially available DL time units. If the FDRA indication includes partially unavailable DL frequency resources within the partially available DL time units, the UE may perform rate matching around the partially unavailable DL frequency resources.

[0202] [Option 3] The frequency resource configuration and the mapping to the frequency domain resource allocation (FDMA indication in the DCI) for the partially available DL time unit are configured separately by an RRC IE. The UE may interpret the FDRA on the partially available DL frequency resources within the partially available DL time unit based on the new configuration.

[0203] The UE may handle the DMRS and phase tracking reference signal (PTRS) in the same way as the PDSCH.

[0204] -PDCCH reception The UE does not monitor PDCCH (candidates) on partially unavailable DL frequency resources (or partially available UL frequency resources) within a partially available DL time unit. The UE may follow either of options 1 and 2 below.

[0205] [Option 1] The CORESET and search space (SS) settings are common to all DL time units.

[0206] [Option 2] The CORESET and SS settings may be configured separately for the partially available DL time unit by an RRC IE.

[0207] -SSB measurement The UE does not monitor SSB on partially unavailable DL frequency resources (or partially available UL frequency resources) within a partially available DL time unit. The UE may follow either of the following options 1 and 2. Alternatively, the UE may not assume that SSB monitoring is configured on time resources in which a partially available DL time unit is configured.

[0208] [Option 1] If an SSB can be transmitted according to the SSB periodicity on a partially unavailable DL frequency resource within a partially available DL time unit, the UE ignores (does not perform) SSB measurements on that partially unavailable DL frequency resource.

[0209] [Option 2] If an SSB may be transmitted in a certain time unit according to the SSB period, the UE does not assume that the time unit indicates a partially available DL frequency resource.

[0210] -CSI-RS measurement The UE does not monitor CSI-RS on the partially unavailable DL frequency resources (or the partially available UL frequency resources) within the partially available DL time unit. The UE may follow either of options 1 and 2 below.

[0211] [Option 1] If CSI-RS can be transmitted according to periodic / semi-persistent CSI-RS periodicity on a partially unavailable DL frequency resource within a partially available DL time unit, the UE ignores (does not perform) CSI-RS measurements on that partially unavailable DL frequency resource.

[0212] [Option 2] The UE does not assume that aperiodic CSI-RS is transmitted in partially unavailable DL frequency resources within a partially available DL time unit (that is, the aperiodic CSI-RS transmitted in partially unavailable DL frequency resources within a partially available DL time unit is scheduled (triggered) by DCI).

[0213] -DL-PRS measurement The UE does not monitor the DL-positioning reference signal (PRS) on the partially unavailable DL frequency resource (or the partially available UL frequency resource) within the partially available DL time unit. The UE may follow either of the following options 1 and 2.

[0214] [Option 1] If the DL-PRS can be transmitted according to the periodicity on a partially unavailable DL frequency resource within a partially available DL time unit, the UE ignores (does not perform) DL-PRS measurements on that partially unavailable DL frequency resource.

[0215] [Option 2] If the DL-PRS may be transmitted in a certain time unit according to the periodicity, the UE does not assume that the time unit indicates a partially available DL frequency resource.

[0216] According to this embodiment, for each time resource, the UE can appropriately control reception in DL and partial availability indicated time resources.

[0217] <<Embodiment 3-3>> This section describes UE behavior in partially available UL time units, which may be a "partially available indication" and 'U' (partially available UL frequency resources, P_AU) or a "partially unavailable indication" and 'D' (partially unavailable DL frequency resources, P_ND).

[0218] -PUCCH settings Regarding PUCCH configuration for partially available UL time units, the UE may follow at least one of options 1 and 2 below.

[0219] [Option 1] A separate PUCCH configuration can be configured for partially available UL time units. The PUCCH configuration for partially available UL time units may be configured separately from the PUCCH configuration for normal UL time units (time units that are not indicated with a partial availability indication and are indicated with 'U').

[0220] [Option 2] A single PUCCH configuration is configured with some PUCCH resources for normal UL time units and some PUCCH resources for partially available UL time units, and the UE may select the PUCCH resources corresponding to the time resources.

[0221] For PUCCH usage, the UE may follow either option 1 or 2 below.

[0222] [Option 1] There are no restrictions on the PUCCH usage (UCI type, HARQ-ACK / CSI / SR, etc.) for the partially available UL time unit.

[0223] [Option 2] For partially available UL time units, PUCCH usage is restricted to HARQ-ACK feedback only (HARQ-ACK with SR or HARQ-ACK without SR).

[0224] The settings for transmit power control (TPC) for a fractionally usable UL time unit may be different from the settings for TPC for a normal UL time unit.

[0225] For DMRS, the UE may handle it in the same way as PUCCH.

[0226] -PUSCH settings Regarding PUSCH configuration for the partially available UL time unit, the UE may follow at least one of options 1 and 2 below.

[0227] [Option 1] A separate PUSCH configuration (separate from the PUSCH configuration for the normal UL time unit) is configured for the partially available UL time unit, in which case the scheduled PUSCH may be within (or may be limited to) the partially available UL frequency resources.

[0228] [Option 2] A separate PUSCH configuration for the partially available UL time unit (a separate PUSCH configuration from the PUSCH configuration for the normal UL time unit) is not configured, in which case the UE may not assume that it will be scheduled for PUSCH transmission on the partially unavailable UL frequency resource.

[0229] The configuration for TPC for a partially usable UL time unit may be different from the configuration for TPC for a normal UL time unit. For DMRS and PTRS, the UE may handle them in the same way as PUSCH.

[0230] -PRACH settings For PRACH configuration for a partially available UL time unit, the UE may follow at least one of options 1 and 2 below.

[0231] [Option 1] A separate PRACH configuration (separate from the PRACH configuration for the normal UL time unit) is configured for the partially available UL time unit, in which case PRACH resource selection and transmission may be within (or may be limited to) the partially available UL frequency resources.

[0232] [Option 2] A separate PRACH configuration for the partially available UL time unit (a separate PRACH configuration from the PRACH configuration for the normal UL time unit) is not configured. In this case, the UE may follow either of options 1 and 2 below. [[Option 1]] The UE may not select a PRACH resource on a partially unavailable UL frequency resource, nor may it be ordered by the PDCCH to select a PRACH resource on a partially unavailable UL frequency resource. [[Option 2]] The UE may ignore (or not transmit) a PRACH transmission that overlaps with a partially unavailable UL frequency resource. For example, if a PRACH transmission commanded by the PDCCH overlaps with a partially unavailable UL frequency resource, the UE may ignore (or not transmit) that PRACH transmission.

[0233] -SRS settings Regarding SRS configuration for the partially available UL time unit, the UE may follow at least one of the following options 1 and 2.

[0234] [Option 1] A separate SRS configuration (separate from the SRS configuration for the normal UL time unit) is configured for the partially available UL time unit, in which case resource selection and transmission of the SRS may be within (or may be limited to) the partially available UL frequency resources.

[0235] [Option 2] No separate SRS configuration for the partially available UL time unit (other than the SRS configuration for the normal UL time unit) is configured. In this case, the UE may follow either of options 1 and 2 below. [[Option 1]] The UE may not select an SRS resource on a partially unavailable UL frequency resource, nor may the SRS resource on a partially unavailable UL frequency resource be triggered by a DCI. [[Option 2]] The UE shall not assume that partially available / partially unavailable UL frequency resources are configured for time resources with periodic / semi-persistent-SRS.

[0236] According to this embodiment, for each time resource, the UE can appropriately control transmission in the UL and in the time resources indicated as having partial availability.

[0237] <Other embodiments> In the above embodiments, the settings / instructions / operations for RRC connected (RRC_CONNECTED) UEs have been mainly described, but some of the settings / instructions / operations in each embodiment may also be applied to RRC idle (RRC_IDLE) UEs / RRC inactive (RRC_INACTIVE) UEs.

[0238] For example, a new type of "partial availability" indication may be broadcast in system information (e.g., SIB) for a UE to handle "partial availability" in monitoring SSB, performing RACH, etc.

[0239] For example, a separate RACH configuration for the time units indicated as "partial availability" (a separate RACH configuration from the RACH configuration for the normal time units) may be broadcast in the system information (e.g., SIB), and the UE may follow the broadcasted configuration when performing RACH on the time units indicated as "partial availability."

[0240] The broadcasted type / settings may be used by UEs with new UE capabilities.

[0241] In the present disclosure, a guard band may be configured / instructed between a DL frequency resource and an UL frequency resource within the same time resource, and the guard band may be unavailable for both DL and UL.

[0242] 《UE Capabilities / Upper Layer Parameters》 In each embodiment, a higher layer parameter (RRC information element) / UE capability corresponding to at least one function (feature) may be defined. The UE capability may indicate whether the function is supported.

[0243] A UE for which a higher layer parameter corresponding to the function is configured may perform the function. Alternatively, it may be specified that "a UE for which a higher layer parameter corresponding to the function is not configured does not perform the function (for example, applies the operation of Rel. 15 / 16)."

[0244] A UE that reports a UE capability indicating that it supports the function may perform the function. It may also be specified that "a UE that does not report a UE capability indicating that it supports the function shall not perform the function (e.g., apply the behavior of Rel. 15 / 16)."

[0245] If the UE reports a UE capability indicating that it supports the function and the corresponding upper layer parameter is configured, the UE may perform the function. It may also be specified that "if the UE does not report a UE capability indicating that it supports the function or if the corresponding upper layer parameter is not configured, the UE shall not perform the function (e.g., apply the behavior of Rel. 15 / 16)."

[0246] The UE capabilities may indicate whether or not it supports a new type of configuration / indication of "partial availability" via an RRC IE.

[0247] The UE capability may indicate whether it supports at least one of the "Partial Availability Indication" and 'D' and the "Partial Availability Indication" and 'U'.

[0248] The UE capabilities may indicate whether or not it supports "partial availability" MAC CE / DCI updates.

[0249] The UE capabilities may indicate whether it supports a specific DL / UL channel / RS configuration for time units with "partial availability" (apart from the configuration for normal time units). The configuration for time units with "partial availability" may be common to multiple specific channels / RS. The specific channel / RS may be at least one of the following: PDCCH PDSCH PUCCH ·PUSCH PRACH SRS

[0250] UE capability may be defined as the number of channels / RSs that can be simultaneously transmitted / received. UE capability may be defined as the number of channels / RSs that can be simultaneously transmitted / received within an operating band.

[0251] The above UE capabilities / upper layer parameters allow the UE to achieve the above functions while maintaining compatibility with existing specifications.

[0252] (wireless communication system) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0253] 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0254] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0255] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0256] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0257] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0258] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0259] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a frequency band higher than FR2.

[0260] Furthermore, the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

[0261] The multiple base stations 10 may be connected by wire (for example, optical fiber conforming to the Common Public Radio Interface (CPRI), an X2 interface, or the like) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0262] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0263] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0264] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the radio communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0265] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0266] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0267] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.

[0268] The PDSCH transmits user data, higher layer control information, System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit Master Information Block (MIB).

[0269] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0270] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as an UL grant, a UL DCI, etc. Note that the PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

[0271] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0272] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," "CORESET setting," etc. in the present disclosure may be read interchangeably.

[0273] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0274] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0275] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted as DL-RS.

[0276] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including the SS (PSS, SSS) and the PBCH (and DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as reference signals.

[0277] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0278] (base station) 9 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0279] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0280] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0281] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0282] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0283] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0284] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0285] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0286] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0287] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0288] The transceiver 120 (transmission processor 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0289] The transmitting / receiving unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna .

[0290] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna .

[0291] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0292] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0293] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0294] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0295] The transceiver 120 may transmit Radio Resource Control (RRC) information elements related to the configuration of a bandwidth portion (BWP) in a duplexing method that performs frequency division multiplexing of uplink (UL) resources and downlink (DL) resources within one component carrier in a time division duplex (TDD) band. The control unit 110 may use the RRC information elements to control at least one of the configuration, application, activation, and switching of the DL / UL BWP.

[0296] The transceiver 120 may transmit an indication of a link direction (e.g., D / U / F) for a first time resource (e.g., a time unit) and an availability (e.g., partial availability, partial availability, partial unavailability) of some frequency resources within the first time resource. The controller 110 may control uplink reception or downlink transmission in the frequency resources within the first time resource based on the indication.

[0297] (user terminal) 10 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0298] Note that this example mainly shows functional blocks of the characteristic parts of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0299] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0300] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.

[0301] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured from a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0302] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0303] The transmitting / receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0304] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0305] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0306] The transceiver 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0307] The transceiver 220 (transmission processor 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0308] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, the transceiver unit 220 may not perform DFT processing as the transmission processing.

[0309] The transmitting / receiving unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna 230.

[0310] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0311] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0312] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0313] The transmitting section and receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0314] The transceiver 220 may receive Radio Resource Control (RRC) information elements related to the configuration of a bandwidth portion (BWP) in a duplexing method that performs frequency division multiplexing of uplink (UL) resources and downlink (DL) resources within one component carrier in a time division duplex (TDD) band. The controller 210 may control at least one of the configuration, application, activation, and switching of the DL / UL BWP based on the RRC information elements.

[0315] The DL / UL BWP may be allowed to be configured with non-contiguous physical resource blocks (PRBs).

[0316] The RRC information element may be an RRC information element for configuring TDD or an RRC information element for configuring BWP.

[0317] The transceiver 220 may further receive downlink control information (DCI) and a medium access control (MAC) control element. The controller 210 may control the timing and duration of application of the DL / UL BWP based on at least one of the RRC information element, the DCI, and the MAC CE.

[0318] The transceiver 220 may receive an indication of a link direction (e.g., D / U / F) for a first time resource (e.g., a time unit) and an availability (e.g., partial availability, partial availability, partial unavailability) of some frequency resources within the first time resource. The controller 210 may control uplink transmission or downlink reception on the frequency resources within the first time resource based on the indication.

[0319] The availability may indicate any of the following: the frequency resource is available for downlink; the frequency resource is unavailable for downlink; the frequency resource is available for uplink; or the frequency resource is unavailable for uplink.

[0320] The transceiver 220 may receive a first configuration of a first type of channel or signal for the first time resource and a second configuration of the first type of channel or reference signal for a second time resource for which the availability is not indicated. The controller 210 may control transmission or reception of the first type of channel or reference signal in the first time resource based on the first configuration, and may control transmission or reception of the first type of channel or reference signal in the second time resource based on the second configuration.

[0321] Transmission or reception of a second type of channel or signal may occur in time resources for which the availability is not indicated, and not in the first time resources.

[0322] (Hardware configuration) 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 (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining the single device or multiple devices with software.

[0323] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As mentioned above, the implementation method of each is not particularly limited.

[0324] For example, a base station, a user terminal, 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. 11 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0325] In the present disclosure, terms such as apparatus, circuit, device, section, and unit may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0326] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0327] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0328] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0329] 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 these. 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 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be realized in a similar manner.

[0330] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, 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), or other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory, or the like. The memory 1002 may store executable programs (program codes), software modules, and the like for implementing a wireless communication method according to an embodiment of the present disclosure.

[0331] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as a secondary storage device.

[0332] 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, or a communication module. 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 transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0333] The input device 1005 is an input device (for example, 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 (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0334] 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.

[0335] Furthermore, the base station 10 and the user 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 using such hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0336] (Variation) Note that terms explained in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0337] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may 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.

[0338] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0339] 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), and may be a time unit based on numerology.

[0340] 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 (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0341] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0342] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of a subframe and a 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.

[0343] 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. However, the definition of TTI is not limited to this.

[0344] 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.

[0345] 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.

[0346] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP 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.

[0347] 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 equal to or greater than 1 ms.

[0348] 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 also be determined based on numerology.

[0349] In addition, an RB may include one or more symbols in the time domain 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.

[0350] 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.

[0351] 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.

[0352] 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 given BWP and numbered within that BWP.

[0353] The BWP may include an UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0354] 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."

[0355] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, 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. may be changed in various ways.

[0356] 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 a predetermined index.

[0357] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (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.

[0358] 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.

[0359] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0360] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0361] Notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0362] Note that the physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be called an RRC message, such as an RRC connection setup message or an RRC connection reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0363] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0364] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0365] 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.

[0366] 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.

[0367] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0368] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0369] In this disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," "serving cell," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0370] 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 divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0371] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0372] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0373] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, or the mobile object itself. The mobile object 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 also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0374] 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 user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user 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.

[0375] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0376] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0377] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed 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 specific order presented.

[0378] Each aspect / embodiment described in the present disclosure may be related to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to systems that use 802.20, Ultra-Wide Band (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, or to next-generation systems that are based on and extend these systems. Furthermore, the present invention may be applied to a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G).

[0379] 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."

[0380] 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.

[0381] The term "determining," as used in this disclosure, may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0382] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0383] Also, "decision" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "decision" may be considered to be "deciding" on some action.

[0384] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0385] As used in this disclosure, 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."

[0386] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0387] 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."

[0388] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0389] 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.

[0390] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. a receiving unit that receives information about a first time resource including one or more symbols, the first time resource indicating either an uplink or a downlink, and information about frequency resources within a certain bandwidth part (BWP) of the first time resource; a control unit that controls uplink transmission or downlink reception in the frequency resource within the first time resource based on the information.

2. receiving information about a first time resource including one or more symbols, the first time resource indicating either an uplink or a downlink, and information about frequency resources within a bandwidth part (BWP) of the first time resource; and controlling uplink transmission or downlink reception in the frequency resource within the first time resource based on the information.

3. a transmitter configured to transmit information on a first time resource including one or more symbols, the first time resource indicating either an uplink or a downlink, and information on a frequency resource within a certain bandwidth part (BWP) of the first time resource; a control unit that controls uplink reception or downlink transmission in the frequency resource within the first time resource based on the information.

4. A system comprising the terminal according to claim 1 and a base station, The base station A system having a transmitter that transmits the information.

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