Terminal and radio communication method for a terminal

Abstract

A user terminal according to one aspect of the present invention has a control section that selects an empty resource region that is configured in association with a certain bandwidth portion (bwp), and a transmission / reception section that performs transmission and / or reception processes taking into account the empty resource region. According to one aspect of the present invention, even when bwp-based control is implemented, the decline in communication throughput and the like can be reduced.

Description

1 / 51 TERMINAL AND RADIOCOMMUNICATION METHOD FOR A TERMINAL Technical Field

[001] The present invention relates to a user terminal and a method of radio communication in next-generation mobile communication systems. Technical Background

[002] In the UMTS (Universal Mobile Telecommunications System) network, the specifications for long-term evolution (LTE) were developed with the aim of further increasing high-speed data rates, providing lower latency and so on (see non-patent literature 1). In addition, successor LTE systems are also being studied with the aim of achieving greater broadbandization and increased speed beyond LTE (referred to as, for example, LTE-A (LTE Advanced), FRA (Future Radio Access), 4G, 5G, 5G+ (plus)”, NR (New RAT), LTE Rel. 14, LTE Rel. 15 (or later versions) and so on).

[003] Furthermore, in existing LTE systems (e.g., LTE Rel. 8 to 13), downlink (DL) and / or uplink (UL) communications are performed using 1 ms subframes as scaling units. For example, when using normal cyclic prefixes, the subframe consists of 14 symbols in a 15 kHz subcarrier spacing. This subframe is also referred to as a transmission time interval (TTI), and so on. List of Citations Non-Patented Literature

[004] Non-Patent Literature 1: 3GPP TS36.300 V8.12.0 Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Petition 870200039774, dated 03 / 26 / 2020, page 10 / 63 2 / 51 Radio Access Network (E-UTRAN); Overall Description; Stage 2 (Release 8), April 2010 Summary of the Invention Technical Problem

[005] In anticipation of future radio communication systems (e.g., NR), research is underway to configure one or more bandwidth-wide parts (BWPs), included in a component carrier (CC) or a system bandwidth, for a user terminal (UE (User Equipment)). A BWP for use in DL communication may be referred to as a “DL BWP” and a BWP used for UL communication may be referred to as a “UL BWP.”

[006] Anticipating NR, research is underway to enable reserving time / frequency data resources in time units that serve as data channel scaling units (e.g., slots and / or minislots) for future scalability. These time / frequency data resources may be referred to as unknown resources, reserved resources, “blank resources”, unused resources and / or the like.

[007] In NR, BWP-based control is likely to be implemented. However, little research has been done on how to enable UE to identify blank features when BWPs are introduced. Unless an appropriate method for selecting blank features is introduced, flexible control is not possible and there may be a decline in communication throughput, spectral efficiency, and so on.

[008] It is therefore an objective of the present invention to provide a user terminal and a method of radio communication, in which, even when the Petition 870200039774, dated 03 / 26 / 2020, page 11 / 63 3 / 51 BWP-based control is implemented, the decline in communication transfer rate and the like can be reduced. Solution to the Problem

[009] A user terminal according to one aspect of the present invention includes a control section that selects a region of blank resources configured in association with a given bandwidth portion (BWP) and a transmission / reception section that performs transmission and / or reception processes taking into account the region of blank resources. Advantageous Effects of the Invention

[010] According to an example of the present invention, even when BWP-based control is implemented, the decline in communication transfer rate and the like can be reduced. Brief Description of the Figures

[011] FIG. 1 is a diagram showing an example of resource sharing between a DL control channel and a DL data channel;

[012] FIG. 2 is a diagram showing an example of a blank feature;

[013] FIG. 3 is a diagram showing examples of associations between BWPs and blank resources according to a first example of the present invention;

[014] FIG. 4 is a diagram that shows other examples of associations between BWPs and blank resources according to the first example;

[015] FIG. 5 is a diagram that shows further examples of associations between BWPs and blank resources according to the first Petition 870200039774, dated 03 / 26 / 2020, page 12 / 63 4 / 51 example;

[016] FIG. 6 is a diagram showing examples of associations between BWPs and blank resources according to a second example of the present invention;

[017] FIG. 7 is a diagram showing other examples of associations between BWPs and blank resources according to the second example;

[018] FIG. 8 is a diagram showing an exemplary schematic structure of a radio communication system according to a modality;

[019] FIG. 9 is a diagram showing an exemplary general structure of a radio base station according to a modality;

[020] FIG. 10 is a diagram showing an exemplary functional structure of a radio base station according to a mode;

[021] FIG. 11 is a diagram showing an exemplary general structure of a user terminal according to a modality;

[022] FIG. 12 is a diagram showing an exemplary functional structure of a user terminal according to a modality; and

[023] FIG. 13 is a diagram showing an exemplary hardware structure of a base radio station and a user terminal according to a modality. Description of the Modalities

[024] In anticipation of future radiocommunication systems (for example, at least one of NR, 5G and 5G+, which will henceforth be referred to simply as NR), research is underway to use time units other than the subframes of existing LTE systems (for example, LTE Rel. 8 to 13) (for example, slots and / or minislots, one or more Petition 870200039774, dated 03 / 26 / 2020, p. 13 / 63 5 / 51 OFDM symbols etc.) as scheduling units for data channels.

[025] It is worth noting that a data channel can be a DL data channel (e.g., a downlink shared channel (PDSCH (Physical Downlink Shared Channel))), a UL data channel (e.g., an uplink shared channel (PUSCH (Physical Uplink Shared Channel))) and / or the like, and may be referred to simply as data or as a shared channel.

[026] Here, a slot is a time unit that depends on the numerology (e.g., subcarrier spacing and / or symbol duration) that a UE uses. The number of symbols per slot can be determined by subcarrier spacing. For example, if the subcarrier spacing is 15 kHz or 30 kHz, the number of symbols per slot can be 7 or 14. Meanwhile, when the subcarrier spacing is 60 kHz or higher, the number of symbols per slot can be 14. A minislot is a time unit with a shorter period (or fewer symbols) than a slot.

[027] Anticipating NR, studies are underway to share resources (which may be referred to as resource sharing and the like) between a DL control channel (e.g., PDCCH (Physical Downlink Control Channel)) and a DL data channel (e.g., PDSCH). FIG. 1 is a diagram showing an example of resource sharing between a DL control channel and a DL data channel.

[028] As shown in FIG. 1, time and / or frequency data resources are reserved for a DL control channel, and the DL control channel is allocated to at least part of the time and / or frequency data resources. Petition 870200039774, dated 03 / 26 / 2020, page 14 / 63 6 / 51

[029] That is, these time and / or frequency resource data may include candidate regions for allocating one or more DL control channels, and these candidate regions may be referred to as a control resource set (CORESET), a control sub-band, a “search space set”, a “search space resource set”, a “control field”, a “control sub-band”, an “NR-PDCCH field” and / or the like.

[030] These time and / or frequency resources may be referred to as reserved resources and so on. Reserved resources may assume various configurations (which may be referred to as defaults, reserved resource defaults, etc.) depending, for example, on the number of UEs scheduled in a slot, the UE capabilities, and the like. Reserved resources may correspond to the entire range of a CORESET that may be used by one or more UEs in a given time unit.

[031] As shown in FIG. 1, multiple reserved resource patterns (here, patterns 0 to 3) can be configured semi-statically in the UE (by upper layer signaling (e.g., radio resource control signaling (RRC), broadcast information (master information block (MIB)), system information block (SIB), etc.) and so on).

[032] The UE can receive CORESET configuration information (which may be referred to as CORESET configurations) from the base station (which may be referred to as, for example, a BS, transmit / receive point (TRP), an ENB (eNode B), gNB, etc.). CORESET configurations can be reported, for example, via upper layer signaling (e.g., RRC and / or SIB signaling).

[033] The UE monitors (blindly decodes) one or more CORESETs (or the Petition 870200039774, dated 03 / 26 / 2020, page 15 / 63 7 / 51 search spaces in these CORESETs) configured in the UE to detect the DL control channel (downlink control information (DCI)) for that UE.

[034] The reserved resource pattern to be used in a given slot can be dynamically indicated by given DCIs, from a number of reserved resource patterns. Given DCIs can be reported using a PDCCH commonly used by one or more UEs (the given DCI and the PDCCH in this case can be referred to as group-common DCIs, a group-common PDCCH, and so on, respectively), can be reported using UE-specific PDCCHs (given DCIs can be referred to as scheduling DCIs, etc.), or can be reported on a downlink control channel that is not a PDCCH.

[035] It is worth noting that DCIs for scaling the reception of DL data (e.g., PDSCH) and / or measurements of DL reference signals may be referred to as “DL assignment,” “DL grant,” DL DCI, and so on. It is worth noting that DCIs for scaling the transmission of UL data (e.g., PUSCH) and / or the transmission of UL probe (measurement) signals may be referred to as a UL grant, “UL DCI,” and so on.

[036] The UE can perform reception processes (such as decoding) for DL ​​data channels based on dynamically indicated reserved resource patterns and DL assignments. The UE can also perform transmission processes (such as encoding) for UL data channels based on dynamically indicated reserved resource patterns and UL assignments.

[037] It is worth noting that the NR carrier band in FIG. 1 may be a component carrier (CC), which is allocated to the UE (which is, for example, 200 Petition 870200039774, dated 03 / 26 / 2020, page 16 / 63 8 / 51 MHz (which may also be referred to as "system band" and the like) or it may be a portion of the bandwidth (BWP), which is at least a portion of the CC. One or more BWPs are configured in the UE.

[038] Information about the configuration of each BWP configured in the UE may include information showing at least one of the following: numerology, frequency location (e.g., center frequency), bandwidth (e.g., the number of resource blocks (also known as “RBs (Resource Blocks)”, “PRBs (Physical RBs)”, etc.)), and timing resource (e.g., slot (minislot) indices, cycle, etc.) of each BWP. This configuration information may be reported to the UE via upper-layer signaling or MAC (Media Access Control) signaling.

[039] It is expected that NR will be standardized step by step – that is, NR may undergo initial introduction (in, for example, 5G, LTE Rel. 15 or later versions, or phase 1) and then the specifications initially introduced may undergo continuous evolution (e.g., 5G+, LTE Rel. 16 or later releases or phase 2). Consequently, it is desirable to configure the time unit (e.g., slots and / or minislots) to serve as the data channel scaling unit considering future scalability (future compatibility).

[040] Therefore, research is underway to reserve time / frequency data resources in time units that serve as data channel scheduling units (e.g., slots and / or minislots) for future compatibility. These time / frequency data resources may be referred to as unknown resources, reserved resources, “blank resources”, unused resources, and / or the like. Blank resources may be configured as resources Petition 870200039774, dated 03 / 26 / 2020, page 17 / 63 9 / 51 reserved resources, which were described earlier with reference to FIG. 1 (and may overlap, at least in part, with the reserved resources), or may be configured separately from these reserved resources.

[041] FIG. 2 is a diagram showing an example of a blank resource. As shown in FIG. 2, a blank resource may consist of at least some of the symbols in a slot and / or at least some of the PRBs in a carrier (or BPW). The UE cannot assume (or implement) transmission / reception control and / or operations for this blank resource.

[042] For example, with reference to FIG. 2, a PDSCH for the UE can be allocated in the slot. Meanwhile, the UE can perform reception processes for the PDSCH (e.g., at least one of demodulation, decoding, rate matching, etc.), assuming that no PDSCH is allocated to the blank resource in that slot.

[043] In NR, BWP-based control is likely to be implemented. However, little research has been done on how to enable UE to identify blank features when BWPs are introduced. Unless an appropriate method for selecting blank features is introduced, flexible control is not possible and there may be a decline in communication throughput, spectral efficiency, and so on.

[044] Therefore, the present inventors had the idea of ​​properly identifying the region of blank resources configured in association with a given BWP and reducing the decline in communication transfer rate and so on.

[045] Now, embodiments of the present invention will be described below in detail with reference to the accompanying figures. It is worth noting that, in Petition 870200039774, dated 03 / 26 / 2020, page 18 / 63 10 / 51 description below, BWPs can be interpreted as meaning DL BWPs, UL BWPs, or other BWPs. (First example)

[046] In the first example of the present invention, information relating to a set of one or more blank features (which may be referred to as a blank feature pattern, a blank feature region, etc.) is determined based on the BWP configuration. This information may be referred to as blank feature information. For each BWP, one or more corresponding blank feature patterns may be configured in the UE.

[047] Blank resources can be defined in time units that serve as data channel scheduling units. These time units can be represented by one or more symbols, minislots, slots, subframes, and so on.

[048] Blank resource information may include information about the frequency resources of one or more blank resources (e.g., the initial PRB index, the number of PRBs, etc.), information about the time resources of one or more blank resources (e.g., the indices, number, duration, and cycle of given time units (symbols, minislots, slots, etc.)), information about the indices of one or more blank resource patterns, and so on.

[049] Every BWP configuration can include blank resource information, explicitly or implicitly. BWP configurations to include blank resource information can be reported using, for example, top-layer signaling (e.g., RRC signaling, SIBs, etc.).

[050] The EU can select blank resource information with Petition 870200039774, dated 03 / 26 / 2020, page 19 / 63 11 / 51 based on information related to at least one of the following: numerology (e.g., SCS), frequency location (e.g., center frequency), bandwidth (e.g., number of PRBs), and so on, of the configured (and / or active) BWPs. The UE can specify possible blank feature patterns based on which BWP is active.

[051] The UE can select blank resource information based on time-related resource information, such as system frame numbers, slot (minislot) indices, subframe indices, and so on, within the period specified by that information.

[052] The UE can specify the default for blank resources to be assumed in the active BWP based on top-layer signaling, physical layer signaling (e.g., DCI), or a combination thereof. For example, the UE can select the default for blank resources to be assumed in the active BWP based on a fragment of blank resource information, which is specified based on given DCIs among one or more configured blank resource information fragments. Here, the given DCIs can be scaling DCIs or group-common DCIs.

[053] FIG. 3 is a diagram showing examples of associations between BWPs and blank resources according to the first example of the present invention. In this example, BWP 1 and BWP 2 have varying bandwidths. The blank resources in BWP 1 and the blank resources in BWP 2 are configured independently and may be located in different resources in a given slot.

[054] FIG. 4 is a diagram showing other examples of associations between BWPs and blank resources, according to the first example. FIG. 5 is a diagram showing still other examples of associations between BWPs and blank resources according to the first example. Petition 870200039774, dated 03 / 26 / 2020, page 20 / 63 12 / 51 example. FIG. 4 and FIG. 5 show 5 examples of blank resource patterns that can be configured in association with BWP 1 and BWP 2, respectively.

[055] For example, as shown in FIG. 4 from left to right, the UE can evaluate the blank feature pattern of a given BWP (e.g., an active BWP) based on one of the following assumptions (one of the following blank feature patterns can be assumed to be used):

[056] (1) Multiple blank resources composed of different numbers of PRBs are contained in a given period (for example, one or more symbols, one or more slots (minislots) etc.);

[057] (2) Multiple blank resources composed of the same number of PRBs are contained in a given period;

[058] (3) 1 blank resource consisting of a given number of PRBs is contained in a given period;

[059] (4) All the bandwidth of a given BWP is a blank resource in a given period; and

[060] (5) No blank resources are contained in a given BWP in a given period.

[061] Here, (1) to (3) above can be interpreted as meaning that part of the bandwidth of a given BWP is a blank resource in a given period. The number of PRBs can be interpreted as meaning the number of subcarriers, the number of sub-bands and the like.

[062] It is worth noting that “multiple blank resources”, as used in these assumptions, can be multiple non-contiguous blank resources in the time and / or frequency directions, or a plurality of contiguous (neighboring) blank resources in the time and / or frequency directions. Petition 870200039774, dated 03 / 26 / 2020, page 21 / 63 13 / 51

[063] In (1) to (3) above, the number of PRBs in a blank resource can be represented by powers of a given number (e.g., 2) or it can be represented by integer multiples or fractional multiples of a given number (e.g., 2, 3, 4, ...) and so on. In this case, it is easy to allocate blank resources and other resources (e.g., resources where PDSCH is allocated) without gaps, so that the decrease in spectral efficiency can be reduced.

[064] In (1) to (3) above, the location of 1 blank resource can be represented as a relative location with respect to another blank resource. Blank resource information can include information about this relative location. In this case, it is possible to prevent an increase in the amount of blank resource information.

[065] In (1) to (3) above, the location and / or number of PRBs of a blank resource can be represented as relative values ​​with respect to certain BWP settings. For example, consider the case where a BWP with a bandwidth of 10 PRBs is the reference. Assuming that 1 is set as the value to represent the number of PRBs in a blank resource, the absolute value of the number of PRBs can be evaluated as 1 when the blank resource is included in a BWP with a bandwidth of 10 PRBs, and the absolute value of the number of PRBs can be evaluated as 3 when the blank resource is included in a BWP with a bandwidth of 30 PRBs. In this case, it is possible to prevent an increase in the amount of blank resource information.

[066] The BWP settings to be referenced (or BWP configuration parameters) can be configured by upper-layer signaling or similar, or can be defined by the specification.

[067] The above assumption in (4) can be applied to the BWP that meets Petition 870200039774, dated 03 / 26 / 2020, page 22 / 63 14 / 51 certain conditions. For example, the UE may employ assumption (4) above when the bandwidth of a given BWP is less than or equal to a given value, and the UE need not employ assumption (4) above when the bandwidth of the given BWP is greater than the given value. BWP 1 in FIG. 4 corresponds to an example where the bandwidth is equal to or less than a given value, and BWP 2 in FIG. 5 corresponds to an example where the bandwidth is greater than a given value.

[068] Referring to (5) above, the blank feature pattern may indicate that no blank feature is contained (there is no blank feature), that blank features are contained (there are blank features), and so on. Blank feature information may include information about whether or not there are blank features in a given period. This information about the presence / absence of blank features may be represented, for example, using 1 bit, so that the increase in the amount of blank feature information may be reduced.

[069] With regard to (5) above, in the given BWP, CORESET resources may be included in the given period. In that case, the UE may perform a reception process for PDSCH (e.g., demodulation, decoding, rate matching, etc.) or transmission processes (e.g., encoding, modulation, etc.) for PUSCH, in the given period, in consideration of the CORESET resources in the given period. Furthermore, the UE may perform these reception or transmission processes based on the DCIs received in a CORESET in another slot, minislot, and so forth.

[070] According to the first example described above, blank resource patterns can be configured in a UE-specific way and in a BWP-specific way in order to enable flexible control.

[071] For example, when blank resources match the Petition 870200039774, dated 03 / 26 / 2020, page 23 / 63 15 / 51 assumption above (1) are used, a number of different CORESETs configured on varying sizes of feature regions or the same CORESET configured on non-contiguous features in the frequency domain can be multiplexed over blank features of varying sizes of feature regions.

[072] When the blank resources corresponding to the above assumption in (2) are used, applying the same resource region size to these multiple blank resources facilitates the reduction of signaling overhead required for configuration.

[073] When a blank resource corresponding to the above assumption in (3) is used, the signaling overhead can be reduced compared with cases in (1) and (2) above.

[074] When a blank resource corresponding to the above assumption in (4) is used, a CORESET, regardless of the size of the resource region that is configured, can be multiplexed over the blank resource.

[075] When the blank resources corresponding to the above assumption in (5) are used, no unnecessary blank resources are configured when a data channel is scaled in a slot where CORESET is not configured, so that greater resource efficiency can be achieved. (Second example)

[076] According to a second example of the present invention, when multiple BWPs are configured in the UE, a common blank feature pattern across the multiple BWPs is configured in the UE.

[077] The UE can specify possible blank resource defaults, regardless of which BWP is active. It can be assumed that the default Petition 870200039774, dated 03 / 26 / 2020, page 24 / 63 16 / 51 of common blank resources corresponds to specific time and frequency resources in the CC (system bandwidth) where BWP is included.

[078] The UE can specify the common blank resource pattern based on top-layer signaling, physical layer signaling (e.g., DCI), or a combination of these. Points about blank resource information, information included in BWP settings and the like, the method of reporting this information, the method of specifying resource patterns, and so on, which are the same as in the first example, will not be described again.

[079] Every BWP configuration can include blank feature information, explicitly or implicitly. Some BWP configurations do not need to include common blank feature information. Furthermore, if the UE can recognize common blank feature patterns, such as when both blank and common feature patterns are specified by the specification, blank feature information does not need to be included in any BWP configuration. Additionally, common information about blank features can be configured separately from BWP configurations.

[080] The UE may assume that the frequency features of multiple BWPs overlap at least partially. Where there is a plurality of BWPs, the UE may assume that a blank feature pattern to be used in a BWP with a narrower bandwidth is (or is included in) a feature pattern to be used in a BWP with a wider bandwidth.

[081] FIG. 6 is a diagram showing examples of associations between BWPs and blank resources according to a second example of the present invention. In this example, BWP 1 and BWP 2 have varying bandwidths. The blank resources in BWP 1 and the blank resources in BWP 2 are configured and may be located in the same time resources and Petition 870200039774, dated 03 / 26 / 2020, page 25 / 63 17 / 51 frequency in a given slot. In this example, the common blank feature is located at the beginning of a slot, close to the center frequency of each BWP.

[082] It is worth noting that although the example in FIG. 6 showed a case where a common blank resource is a resource included in a whole plurality of BWPs, this is by no means limiting. For example, a common blank resource pattern may correspond to blank resources that span a bandwidth (e.g., the system bandwidth) that is greater than the bandwidth of 1 BWP. Where an active BWP exists and a common resource pattern is provided, the UE only needs to consider the blank resources that are included in the bandwidth of this BWP.

[083] In other words, among the blank resources included in a common blank resource pattern, the UE needs to ignore the blank resources that are located outside the scope of the active BWP.

[084] FIG. 7 is a diagram showing other examples of associations between BWPs and blank resources, according to the second example. The BWP settings in this example are the same as in the example in FIG. 6. The blank resources in BWP 1 and the blank resources in BWP 2 are configured in common and span the bandwidth of BWP 2. When BWP 2 is active, the UE can consider the blank resources in BWP 2. When BWP 1 is active, the UE should only consider the blank resources in BWP 1, in the common blank resource pattern.

[085] According to the second example described above, the blank resource patterns can be configured in a UE-specific way and a BWP-specific way, such that flexible control is possible. (Variations) Petition 870200039774, dated 03 / 26 / 2020, page 26 / 63 18 / 51

[086] A blank feature pattern for DL ​​(DL BWP) and a blank feature pattern for UL (UL BWP) can be configured individually in the UE, or they can be configured together. For example, going back to the second example, a plurality of BWPs can include a DL BWP and a UL BWP.

[087] Blank resource information may include at least one of the blank resource information from DL, which is used as a blank resource in a time unit (slot, minislot, and so on) in which the DL is scheduled, and the blank resource information from UL, which is used as a blank resource in a time unit in which the UL is scheduled.

[088] Blank DL resource information may be included in DL BWP configuration information. Blank UL resource information may be included in UL BWP configuration information. In addition, these types of blank resource information may be included in either DL BWP configuration information and / or UL BWP configuration information as common blank resource information or may be reported separately from BWP configuration information. (Radio Communication System)

[089] Now, the structure of a radio communication system according to an embodiment of the present invention will be described below. In this radio communication system, the radio communication methods according to the embodiments described above are employed. It is worth noting that the radio communication methods according to the examples contained in the present invention can be applied individually or can be combined and applied.

[090] FIG. 8 is a diagram showing a schematic structure. Petition 870200039774, dated 03 / 26 / 2020, page 27 / 63 19 / 51 exemplary of a radiocommunication system according to an embodiment of the present invention. A radiocommunication system 1 may adopt carrier aggregation (CA) and / or dual connectivity (DC) to group a plurality of fundamental frequency blocks (component carriers) into one, wherein the LTE system bandwidth (e.g., 20 MHz) constitutes 1 unit. It is worth noting that the radiocommunication system 1 may be referred to as SUPER 3G, LTE-A (LTE-Advanced), IMT-Advanced, 4G, 5G, FRA (Future Radio Access), NR (New RAT), and so on.

[091] The radio communication system includes a base radio station 11 that forms a macrocell C1, and base radio stations 12a to 12c, which are placed within the macrocell C1 and form small cells C2, which are narrower than the macrocell C1. In addition, 20 user terminals are placed in the macrocell C1 and in each small cell C2. A structure can be adopted in which different numerologies are applied between cells. It is worth noting that a “numerology” refers to a set of communication parameters that characterize the signal design in a given RAT.

[092] User terminals 20 can connect to both base radio station 11 and base radio stations 12. User terminals 20 can use macrocell C1 and small cells C2, which use different frequencies, simultaneously via AC or DC. In addition, user terminals 20 can operate AC or DC using a plurality of cells (CCs) (e.g., two or more CCs). Furthermore, user terminals can use licensed band CCs and unlicensed band CCs as a plurality of cells.

[093] In addition, user terminal 20 can perform communication using time-division duplexing (TDD) and / or frequency-division duplexing (FDD) in each cell. A TDD cell and an FDD cell can Petition 870200039774, dated 03 / 26 / 2020, page 28 / 63 20 / 51 can be referred to as a TDD carrier (type 2 frame configuration) and an FDD carrier (type 1 frame configuration), respectively.

[094] Furthermore, in each cell (carrier), one can use a slot with a relatively long time period (e.g., 1 ms) (also referred to as a TTI, a normal TTI, a long TTI, a normal subframe, a “long subframe, a subframe”, and so on) and / or a slot with a relatively short time period (also referred to as a minislot, a short TTI, a “short subframe”, and so on). In addition, in each cell, one can use subframes of two or more time lengths.

[095] Between user terminals 20 and base radio station 11, communication can be carried out using a relatively low frequency band carrier (e.g., 2 GHz) and narrow bandwidth (referred to, for example, as an existing carrier, a “legacy carrier,” and so on). Meanwhile, between user terminals 20 and base radio stations 12, a relatively high frequency band carrier (e.g., 3.5 GHz, 5 GHz, 30 to 70 GHz, and so on) and wide bandwidth can be used, or the same carrier as that used at base radio station 11 can be used. It is worth noting that the frequency band structure for use at each base radio station is by no means limited to these.

[096] A structure can be employed here in which a wired connection (e.g., fiber optics that conforms to CPRI (Common Public Radio Interface), the X2 interface, and so on) or a wireless connection is established between base radio station 11 and base radio station 12 (or between 2 base radio stations 12).

[097] Base radio station 11 and base radio stations 12 are each, Petition 870200039774, dated 03 / 26 / 2020, page 29 / 63 21 / 51 are connected to a higher station device 30, and are connected to a core network 40 via the higher station device 30. It is worth noting that the higher station device 30 can be, for example, an access gateway device, a radio network controller (RNC), a mobility management entity (MME), and so on, without being limited to these. Additionally, each base radio station 12 can be connected to the higher station device 30 via the base radio station 11.

[098] It is worth noting that base radio station 11 is a base radio station with relatively wide coverage, and may be referred to as a macro base station, central node, eNB (eNodeB), a transmit / receive point, and so on. In addition, base radio stations 12 are base radio stations with local coverage and may be referred to as small base stations, micro base stations, pico base stations, femto base stations, HeNBs (domestic eNodeBs), RRHs (Remote Radio Heads), transmit / receive points, and so on. Hereafter, base radio stations 11 and 12 will be collectively referred to as base radio stations 10, unless otherwise specified.

[099] User terminals 20 are terminals to support various communication schemes, such as LTE, LTE-A and so on, and can be mobile communication terminals or stationary communication terminals. In addition, user terminals 20 can perform terminal-to-terminal (D2D) communication with other user terminals 20.

[0100] In radio communication system 1, as radio access schemes, OFDMA (Orthogonal Frequency Division Multiple Access) can be applied to the downlink (DL), and SC-FDMA (Single Carrier Frequency Division Multiple Access) can be applied to the uplink (UL). OFDMA is a communication scheme of Petition 870200039774, dated 03 / 26 / 2020, page 30 / 63 22 / 51 multicarrier to perform communication by dividing a frequency bandwidth into a plurality of narrow frequency bandwidths (subcarriers) and mapping data to each subcarrier. SCFDMA is a single-carrier communication scheme to mitigate interference between terminals by dividing the system bandwidth into bands formed with one or more contiguous blocks of resources per terminal and allowing a number of terminals to utilize mutually different bands. It is worth noting that uplink and downlink radio access schemes are not limited to combinations thereof, and OFDMA can be used in UL. Furthermore, SC-FDMA can be applied to a side link (SL) used in terminal-to-terminal communication.

[0101] In radio communication system 1, a DL data channel (PDSCH (Physical Downlink Shared Channel), also referred to as a shared DL channel and / or similar), which is used by each user terminal 20 in a shared manner, a broadcast channel (PBCH (Physical Broadcast Channel)), the L1 / L2 control channels and so on, are used as DL channels. At least one of the user data, upper layer control information and SIBs (System Information Blocks) are communicated using the PDSCH. In addition, the MIB (Master Information Block) is communicated on the PBCH.

[0102] The L1 / L2 control channels include DL control channels (PDCCH (Physical Downlink Control Channel), EPDCCH (Enhanced Physical Downlink Control Channel), etc.), PCFICH (Physical Control Format Indicator Channel), PHICH (Physical Hybrid ARQ Indicator Channel), and so on. Downlink control information (DCI), including PDSCH and PUSCH scheduling information, is communicated by the PDCCH. The number of OFDM symbols to be Petition 870200039774, dated 03 / 26 / 2020, page 31 / 63 The 23 / 51 used for PDCCH is communicated by PCFICH. EPDCCH is frequency-division multiplexed with PDSCH and used to communicate DCI and so on, like PDCCH. Push retransmission control information (also known as A / N, HARQ-ACK, HARQ-ACK bit, A / N codebook, and so on) can be communicated using at least one of PHICH, PDCCH, and EPDCCH.

[0103] In radio communication system 1, a UL data channel (PUSCH (Physical Uplink Shared Channel)), also referred to as a shared UL channel and / or similar), which is used by each user terminal 20 in a shared manner, a UL control channel (PUCCH (Physical Uplink Control Channel)), a random access channel (PRACH (Physical Random Access Channel)), and so on, are used as UL channels. User data, upper-layer control information, and so on, are communicated by the PUSCH. Uplink control information (UCI), including at least one of the PDSCH retransmission confirmation information (also referred to as “A / N”, “HARQ-ACK”, and so on), channel status information (CSI), and so on, are communicated using the PUSCH or the PUCCH. PRACH is used to communicate random access preambles in order to establish connections with the cells. <Estação Rádio Base>

[0104] FIG. 9 is a diagram showing an exemplary general structure of the base radio station according to an embodiment of the present invention. A base radio station 10 has a plurality of transmit / receive antennas 101, amplification sections 102, transmit / receive sections 103, a baseband signal processing section 104, a call processing section 105 and an interface of Petition 870200039774, dated 03 / 26 / 2020, pp. 32 / 63 24 / 51 communication path 106. It should be noted that one or more transmit / receive antennas 101, amplification sections 102 and transmit / receive sections 103 may be provided. The base radio station 10 may be a receiving device in UL and a transmitting device in DL.

[0105] The user data input to be transmitted from base radio station 10 to a user terminal 20 on the downlink is entered from the upstation device 30 to the baseband signal processing section 104, via the communication path interface 106.

[0106] In the baseband signal processing section 104, user data is subjected to a transmission process, including a PDCP (Data Packet Convergence Protocol) layer process, splitting and coupling of user data, RLC (Radio Link Control) layer transmission processes such as RLC retransmission control, MAC (Medium Access Control) retransmission control (e.g., a HARQ (Hybrid Automatic Repeat Request) process), scheduling, transport format selection, channel coding, rate matching, scrambling, an inverse fast Fourier transform (IFFT) process and a pre-coding process, and the result is forwarded to each transmit / receive section 103.Furthermore, downlink control signals are also subjected to transmission processes, such as channel coding and an inverse fast Fourier transform, and routed to the transmit / receive sections 103.

[0107] Baseband signals that are pre-coded and emitted from the baseband signal processing section 104 by antenna are converted into a radio frequency band in the transmission / reception sections 103 and then transmitted. The radio frequency signals undergoing frequency conversion in the transmission / reception sections Petition 870200039774, dated 03 / 26 / 2020, pp. 33 / 63 25 / 51 103 are amplified in the amplification sections 102 and transmitted from the transmit / receive antennas 101.

[0108] The transmission / reception sections 103 may consist of transmitters / receivers, transmission / reception circuits or transmission / reception apparatus that may be described based on a general understanding of the technical field to which the present invention relates. It is worth noting that a transmission / reception section 103 may be structured as a transmission / reception section in one entity, or may consist of a transmission section and a reception section.

[0109] Meanwhile, regarding the UL signals, the radio frequency signals that are received at the transmit / receive antennas 101 are each amplified in the amplification sections 102. The transmit / receive sections 103 receive the UL signals amplified in the amplification sections 102. The received signals are converted into the baseband signal through frequency conversion in the transmit / receive sections 103 and emitted to the baseband signal processing section 104.

[0110] In the baseband signal processing section 104, the UL data included in the input UL signals are subjected to a Fast Fourier Transform (FFT) process, an Inverse Discrete Fourier Transform (IDFT) process, error correction decoding, a MAC retransmission control reception process, and RLC and PDCP layer reception processes, and forwarded to the higher station device 30 via the communication path interface 106. The call processing section 105 performs at least call processing such as the configuration and release of communication channels, manages the state of base radio stations 10, or manages radio resources.

[0111] The communication path interface section 106 transmits and Petition 870200039774, dated 03 / 26 / 2020, page 34 / 63 26 / 51 receives signals from and to the higher station unit 30 through a certain interface. In addition, the communication path interface 106 can transmit and / or receive signals (backhaul signaling) with neighboring base radio stations 10 via an interbase station interface (e.g., a CPRI (Common Public Radio Interface) compliant interface, such as fiber optic, X2 interface, etc.).

[0112] In addition, the transmit / receive sections 103 transmit DL signals (e.g., at least one DCI (including at least one DL assignment, UL grant and common DCI), DL data (channel), reference signals and upper layer control information) and / or receive UL signals (e.g., at least one UL data (channel), UCI, reference signals and upper layer control information).

[0113] More specifically, the transmit / receive sections 103 can transmit a DL data channel (e.g., PDSCH) in variable duration transmission periods (e.g., slots, minislots, a predetermined number of symbols, and so on) and / or receive a UL data channel (e.g., PUSCH).

[0114] Transmission / reception sections 103 may perform transmission and / or reception processes taking into account blank resource regions. Transmission / reception sections 103 may not perform transmission and / or reception processes for data signals (e.g., PDSCH, PUSCH, and so on) in blank resource regions.

[0115] FIG. 10 is a diagram showing an exemplary functional structure of a radio base station according to an embodiment of the present invention. It is worth noting that, although FIG. 10 mainly shows Petition 870200039774, dated 03 / 26 / 2020, page 35 / 63 27 / 51 functional blocks belonging to characteristic parts of the present embodiment, the base radio station 10 has other functional blocks that are also necessary for radiocommunication. As shown in FIG. 10, the baseband signal processing section 104 has a control section 301, a transmission signal generation section 302, a mapping section 303, a received signal processing section 304 and a measurement section 305.

[0116] Control section 301 controls the entire base radio station 10. Control section 301 controls, for example, at least one of the following: downlink signal generation in the transmission signal generation section 302, downlink signal mapping in the mapping section 303, uplink signal reception (e.g., demodulation) in the received signal processing section 304, and measurements in the measurement section 305. In addition, control section 301 can control data channel scheduling (including DL data channels and / or UL data channels).

[0117] Control section 301 can select a blank resource region for a user terminal (blank resource pattern) in association with a given bandwidth portion (BWP). Control section 301 can control transmission and / or reception processes taking into account the blank resource regions.

[0118] Control section 301 can exercise control such that information about blank resource regions is transmitted to user terminal 20. For example, control section 301 can exercise control so that information about a blank resource region in an active BWP is included and reported in the configuration information of that active BWP. Control section 301 can exercise control so that Petition 870200039774, dated 03 / 26 / 2020, pages 36 / 63 28 / 51 Information about a blank resource region in an active BWP should be included and reported in the configuration information of that active BWP. Note that this common blank resource region may contain a resource field located outside the frequency band of at least one of several BWPs configured on user terminal 20.

[0119] Control section 301 can select blank feature regions based on one of the following assumptions (1) through (3): (1) In a given period, the entire bandwidth of a given BWP (e.g., an active BWP) is a blank resource region; (2) In a given period, part of the bandwidth of a given BWP is a region of blank resources; and (3) In a given period, the given BWP does not contain any regions of blank resources. [01 20] The control section 301 may consist of a controller, a control circuit or a control apparatus that can be described based on a general understanding of the technical field to which the present invention relates.

[0121] The transmission signal generation section 302 can generate DL signals (including data signals from at least one of the DL data (channel), DCI, DL reference signals, control information to be sent in upper layer signaling) as commanded from the control section 301, and sends these signals to the mapping section 303.

[0122] The transmission signal generation section 302 may consist of a signal generator, a signal generation circuit or a signal generation apparatus that can be described based on a general understanding of the technical field to which the present invention relates.

[0123] Mapping section 303 maps the link signals Petition 870200039774, dated 03 / 26 / 2020, page 37 / 63 29 / 51 descending signals generated in the transmission signal generation section 302 for specific radio resources based on commands from the control section 301 and transmit them to the transmission / reception sections 103. For example, the mapping section 303 maps the reference signals to predetermined radio resources in allocation patterns determined by the control section 301.

[0124] The mapping section 303 may consist of a mapper, a mapping circuit or a mapping apparatus which may be described based on a general understanding of the technical field to which the present invention relates.

[0125] The received signal processing section 304 performs reception processes (e.g., demapping, demodulation, decoding, etc.) of uplink signals that are transmitted from user terminals 20. For example, the received signal processing section 304 can demodulate a UL data channel using a reference signal provided in an allocation pattern determined in the control section 301. More specifically, the received signal processing section 304 can transmit the received signals, the signals after the reception processes, and so on, to the measurement section 305.

[0126] For the received signal processing section 304, a signal processor, a signal processing circuit, or a signal processing device may be used that can be described based on a general understanding of the technical field to which the present invention relates. Furthermore, the received signal processing section 304 may constitute the receiving section according to the present invention.

[0127] Measurement section 305 can measure the quality of the UL channel based on, for example, received power (e.g., RSRP (Power)). Petition 870200039774, dated 03 / 26 / 2020, pages 38 / 63 30 / 51 Received from Reference Signal), and / or in the received quality (e.g., RSRQ (Received Reference Signal Quality) of reference signals. The measurement results can be sent to control section 301. (User Terminal)

[0128] FIG. 11 is a diagram showing an exemplary general structure of a user terminal according to an embodiment of the present invention. A user terminal 20 has a plurality of transmit / receive antennas 201 for MIMO communication, amplification sections 202, transmit / receive sections 203, a baseband signal processing section 204 and an application section 205. The user terminal 20 can be a transmitting apparatus in the UL and a receiving apparatus in the DL.

[0129] Radio frequency signals received by a plurality of transmit / receive antennas 201 are amplified in the amplification sections 202. Each transmit / receive section 203 receives the DL signals amplified in the amplification sections 202. The received signals undergo frequency conversion and are converted into the baseband signal in the transmit / receive sections 203, and transmitted to the baseband signal processing section 204.

[0130] The baseband signal processing section 204 performs, for the incoming baseband signal, at least one of the following processes: FFT, error correction decoding, a retransmission control reception process, and so on. The DL data is forwarded to the application section 205. The application section 205 performs processes related to higher layers above the physical layer and the MAC layer, and so on.

[0131] Meanwhile, UL data is entered from the application section. Petition 870200039774, dated 03 / 26 / 2020, pp. 39 / 63 31 / 51 205 for the baseband signal processing section 204. The baseband signal processing section 204 performs a relay control transmission process (e.g., a HARQ transmission process), channel coding, rate matching, punching, a discrete Fourier transform (DFT) process, an IFFT process, and so on, and the result is forwarded to each transmit / receive section 203. The UCIs (including, for example, at least one of an A / N in response to a DL signal, channel state information (CSI), and a scheduling request (SR) and / or others)) are also subjected to at least one of channel coding, rate matching, punching, a DFT process, an IFFT process, and so on, and the result is forwarded to the transmit / receive sections 203.

[0132] The baseband signals that are emitted from the baseband signal processing section 204 are converted into a radio frequency band in the transmit / receive sections 203 and transmitted. The radio frequency signals that undergo frequency conversion in the transmit / receive sections 203 are amplified in the amplification sections 202 and transmitted from the transmit / receive antennas 201.

[0133] In addition, the transmit / receive sections 203 receive DL signals (e.g., at least one of DCI data (including at least one of DL assignment, UL grant and common DCI) from DL (channel), reference signals and upper layer control information) and / or transmit UL signals (e.g., at least one of UL data (channel), UCI, reference signals and upper layer control information).

[0134] More specifically, the transmission / reception sections 103 Petition 870200039774, dated 03 / 26 / 2020, pp. 40 / 63 32 / 51 can transmit a DL data channel (e.g., PDSCH) in variable-length transmission periods (e.g., slots, minislots, a predetermined number of symbols, and so on) and / or receive UL data channels (e.g., PUSCH).

[0135] Transmission / reception sections 203 may perform transmission and / or reception processes taking into account blank resource regions. Transmission / reception sections 203 may not perform transmission and / or reception processes for data signals (e.g., PDSCH, PUSCH, and so on) in blank resource regions.

[0136] The transmission / reception sections 203 may consist of transmitters / receivers, transmission / reception circuits or transmission / reception apparatus that may be described based on a general understanding of the technical field to which the present invention relates. In addition, a transmission / reception section 203 may be structured as a transmission / reception section, or it may be formed with a transmission section and a reception section.

[0137] FIG. 12 is a diagram showing an exemplary functional structure of a user terminal according to an embodiment of the present invention. It is worth noting that, although FIG. 12 mainly shows functional blocks belonging to characteristic parts of the present embodiment, the user terminal 20 has other functional blocks that are also necessary for radiocommunication. As shown in FIG. 12, the baseband signal processing section 204 provided in the user terminal 20 has a control section 401, a transmission signal generation section 402, a mapping section 403, a received signal processing section 404, and a measurement section 405. Petition 870200039774, dated 03 / 26 / 2020, pp. 41 / 63 33 / 51

[0138] Control section 401 controls the entire user terminal 20. Control section 401 controls, for example, at least one of the following: UL signal generation in the transmission signal generation section 402, UL signal mapping in the mapping section 403, DL signal reception process in the received signal processing section 404, and measurements in the measurement section 405.

[0139] More specifically, control section 401 can monitor (blindly decode) a DL control channel and detect the DCIs that scale data channels to user terminal 20. Control section 401 can control the reception of a DL data channel based on these DCIs. Additionally, control section 401 can control the transmission of a UL data channel based on these DCIs.

[0140] Control section 401 can select a blank resource region (blank resource pattern) associated with a given bandwidth portion (BWP). Control section 401 can control transmission and / or reception processes taking this blank resource region into account.

[0141] Control section 401 can select a blank resource region from the active BWP based on the configuration information of that active BWP. Control section 401 can assume that the blank resource region in the active BWP is included in a blank resource region that is included in multiple common BWPs. Note that this common blank resource region may contain a resource field located outside the frequency band of the active BWP.

[0142] Control section 401 can select blank feature regions based on one of the following assumptions (1) through (3): (1) In a given period, all the bandwidth of a given BWP (by Petition 870200039774, dated 03 / 26 / 2020, pp. 42 / 63 34 / 51 example, an active BWP) is a blank resource region; (2) In a given period, part of the bandwidth of a given BWP is a blank resource region; and (3) In a given period, the given BWP does not contain any blank resource regions.

[0143] Control section 401 may consist of a controller, a control circuit or a control apparatus that can be described based on a general understanding of the technical field to which the present invention relates.

[0144] The transmission signal generation section 402 generates retransmission control information for UL signals and DL signals, as commanded from the control section 401 (including encoding performance, rate matching, punching, modulation and / or other processes), and transmits it to the mapping section 403. The transmission signal generation section 402 may consist of a signal generator, a signal generation circuit or a signal generation apparatus that may be described based on a general understanding of the technical field to which the present invention relates.

[0145] Mapping section 403 maps relay control information for UL signals and DL signals generated in transmission signal generation section 402 to radio resources, as commanded from control section 401, and outputs the result to transmission / reception sections 203. For example, mapping section 403 maps reference signals to predetermined radio resources in allocation patterns determined by control section 401.

[0146] Mapping section 403 may consist of a mapper, a mapping circuit or a mapping device that Petition 870200039774, dated 03 / 26 / 2020, pages 43 / 63 35 / 51 can be described based on a general understanding of the technical field to which the present invention relates.

[0147] The received signal processing section 404 performs reception processes of DL signals (including, for example, at least one of demapping, demodulation and decoding). For example, the received signal processing section 404 can demodulate a DL data channel using a reference signal provided in an allocation pattern determined by the control section 401.

[0148] In addition, the received signal processing section 404 can transmit the received signals and / or the signals after the reception process to the control section 401 and / or to the measurement section 405. The received signal processing section 404 transmits, for example, upper layer control information to be sent in upper layer signaling, L1 / L2 control information (e.g., UL grant and / or DL ​​assignment) and so on, to the control section 401.

[0149] The received signal processing section 404 may consist of a signal processor, a signal processing circuit, or a signal processing apparatus that can be described based on a general understanding of the technical field to which the present invention relates. Furthermore, the received signal processing section 404 may constitute the receiving section according to the present invention.

[0150] Measurement section 405 measures channel states based on reference signals (e.g., CSI-RS) from base station 10 and transmits the measurement results to control section 401. Note that channel state measurements can be performed via DC.

[0151] Measurement section 405 may consist of a signal processor, a signal processing circuit or a processing device. Petition 870200039774, dated 03 / 26 / 2020, pp. 44 / 63 36 / 51 signal, and a meter, a measuring circuit or measuring apparatus that can be described based on a general understanding of the technical field to which the present invention relates. (Hardware Structure)

[0152] It is worth noting that the block diagrams used to describe the above embodiments illustrate blocks in functional units. These functional blocks (components) can be implemented in arbitrary combinations of hardware and / or software. Furthermore, the method for implementing each functional block is not particularly limited. That is, each functional block can be implemented by a physically and / or logically aggregated device, or it can be implemented by directly and / or indirectly connecting two or more physically and / or logically separate devices (wired or wireless, for example) and using these multiple devices.

[0153] For example, the base radio station, user terminals, and so forth, according to embodiments of the present invention, can function as a computer that executes the processes of the radio communication method of the present invention. FIG. 13 is a diagram showing an exemplary hardware structure of a base radio station and a user terminal according to an embodiment of the present invention. Physically, the base radio stations 10 and user terminals 20 described above can be formed as a computer apparatus that includes a processor 1001, a memory 1002, a storage 1003, a communication apparatus 1004, an input apparatus 1005, an output apparatus 1006, and a bus 1007.

[0154] It is worth noting that, in the following description, the word apparatus can be replaced by circuit, device, unit, and so on. It is worth noting that the hardware structure of a base 10 radio station and of Petition 870200039774, dated 03 / 26 / 2020, pages 45 / 63 37 / 51 a user terminal 20 can be configured to include one or more of each device illustrated in the drawings or it can be configured to not include part of the device.

[0155] For example, although only 1 processor 1001 is illustrated, a plurality of processors can be provided. Furthermore, processes can be implemented with 1 processor, or processes can be implemented sequentially, or in different ways, on one or more processors. It is worth noting that the 1001 processor can be implemented with one or more chips.

[0156] Each function of the base radio station 10 and the user terminal 20 is implemented by reading certain software (program) from hardware such as the processor 1001 and memory 1002, and by controlling calculations in the processor 1001, communication in the communication device 1004, and reading and / or recording data in memory 1002 or storage 1003.

[0157] Processor 1001 can control the entire computer when executing, for example, an operating system. Processor 1001 can be configured with a central processing unit (CPU), including interfaces with peripheral devices, control devices, computing devices, a register, and so on. For example, the baseband signal processing section 104 (204) described above, the call processing section 105, and so on can be implemented by processor 1001.

[0158] In addition, processor 1001 reads programs (program codes), software modules, data, and so on from storage 1003 and / or communication device 1004, into memory 1002, and executes various processes accordingly. As for programs, programs can be used to enable computers to run by Petition 870200039774, dated 03 / 26 / 2020, pages 46 / 63 38 / 51 less part of the operations of the modes described above. For example, the control section 401 of the user terminals 20 can be implemented by control programs that are stored in memory 1002 and that operate on the processor 1001, and other functional blocks can be implemented in the same way.

[0159] Memory 1002 is a computer-readable recording medium and may consist of, for example, at least one ROM (Read Only Memory), one EPROM (Erasable Programmable ROM), one EEPROM (Electrically Erasable EPROM), one RAM (Random Access Memory) and / or other suitable storage medium. Memory 1002 may be referred to as a register, a cache, a main memory (primary storage device) and so forth. Memory 1002 may store executable programs (program codes), software modules and so forth to implement the radio communication methods according to embodiments of the present invention.

[0160] Storage 1003 is a computer-readable recording medium that may consist of, for example, at least one floppy disk, a floppy disk, a magneto-optical disk (e.g., a CD (CD-ROM (Compact Disc ROM) and so on), a digital versatile disk, a Blu-ray disc (trademark)), a removable disk, a hard disk drive, a smartcard, a flash memory device (e.g., a card, a stick, a key drive, etc.), a magnetic stripe, a database, a server and / or other suitable storage medium. Storage 1003 may be referred to as a secondary storage device.

[0161] The 1004 communication device is a hardware (transmission / reception device) to enable communication between computers. Petition 870200039774, dated 03 / 26 / 2020, pages 47 / 63 39 / 51 using wired and / or wireless networks, and may be referred to as, for example, a network device, a network controller, a network card, a communication module, and so forth. The communication apparatus 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and so forth, to perform, for example, frequency division duplexing (FDD) and / or time division duplexing (TDD). For example, the transmit / receive antennas 101 (201), amplification sections 102 (202), transmit / receive sections 103 (203), communication path interface 106, and so forth, may be implemented by the communication apparatus 1004.

[0162] Input device 1005 is an input device for receiving inputs from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, and so on). Output device 1006 is an output device for allowing outputs to be sent to the outside (e.g., a display, a speaker, an LED (light-emitting diode) lamp, and so on). It is worth noting that input device 1005 and output device 1006 can be provided in an integrated structure (e.g., a touch-sensitive panel).

[0163] Furthermore, these devices, including processor 1001, memory 1002, and so on, are connected by bus 1007 in order to communicate information. Bus 1007 can be formed with a single bus or it can be formed with buses that vary between devices.

[0164] In addition, the base radio station 10 and the user terminal 20 can be structured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Integrated Circuit). Petition 870200039774, dated 03 / 26 / 2020, pp. 48 / 63 40 / 51 Specific), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and so on, and all or part of the functional blocks can be implemented by the hardware. For example, the 1001 processor can be implemented with at least one of these hardware units. (Variations)

[0165] It should be noted that the terminology used in this descriptive report and the terminology necessary for understanding this descriptive report may be replaced by other terms that express the same or similar meanings. For example, channels and / or symbols may be replaced by signals (or signaling). In addition, signals may be messages. A reference signal may be abbreviated as RS and may be referred to as a pilot, a pilot signal, and so on, depending on the applicable standard. In addition, a component carrier (CC) may be referred to as a cell, a frequency carrier, a carrier frequency, and so on.

[0166] Furthermore, a radio frame may comprise one or more periods (frames) in the time domain. Each of the periods (frames) that constitute a radio frame may be referred to as a subframe. In addition, a subframe may be composed of one or multiple slots in the time domain. A subframe may be a fixed time duration (e.g., 1 ms) independent of numerology.

[0167] In addition, a slot may be composed of one or more symbols in the time domain (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, and so on). Furthermore, a slot may be a unit of time based on numerology. Additionally, a slot may include Petition 870200039774, dated 03 / 26 / 2020, pp. 49 / 63 41 / 51 a plurality of minislots. Each minislot can be composed of one or more symbols in the time domain. Additionally, a minislot can be referred to as a subslot.

[0168] A radio frame, a subframe, a slot, a minislot, and a symbol all represent the unit of time in signal communication. A radio frame, a subframe, a slot, a minislot, and a symbol can each be referred to by other applicable names. For example, 1 subframe can be referred to as a transmission time interval (TTI), or a plurality of consecutive subframes can be referred to as a TTI, or 1 slot or minislot can be referred to as a TTI. That is, a subframe and / or a TTI can be a subframe (1 ms) in existing LTE, can be a period shorter than 1 ms (e.g., 1 to 13 symbols), or can be a period longer than 1 ms. It is worth noting that the unit to represent the TTI can be referred to as a slot, a minislot, and so on, instead of a “subframe.”

[0169] Here, a TTI refers to the minimum time-to-scaling unit in radiocommunication, for example. For instance, in LTE systems, a base radio station scales radio resources (such as frequency bandwidth and transmission power that can be used on each user terminal) for allocation to each user terminal in TTI units. It is worth noting that the definition of TTIs is not limited to this.

[0170] The TTI can be the unit of time for transmitting channel-encoded data packets (transport blocks), code blocks, and / or codewords, or it can be the unit of processing in scheduling, link adaptation, and so on. It is worth noting that when a TTI is given, the period (e.g., the number of symbols) in which the transport blocks, code blocks, and / or codewords are actually mapped Petition 870200039774, dated 03 / 26 / 2020, pages 50 / 63 42 / 51 may be shorter than the TTI.

[0171] It is worth noting that when a slot or a minislot is referred to as a TTI, one or more TTIs (i.e., one or multiple slots or one or more minislots) may be the minimum scheduling time unit. Furthermore, the number of slots (the number of minislots) to constitute such a minimum scheduling time unit may be controlled.

[0172] A TTI with a duration of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8 to 12), a long TTI, a normal subframe, a long subframe, and so on. A TTI shorter than a normal TTI may be referred to as a “reduced TTI”, a “short TTI”, a partial TTI (or a “fractional TTI”), a reduced subframe, a short subframe, a minislot, a subslot, and so on.

[0173] It is worth noting that a long TTI (e.g., a normal TTI, a subframe, etc.) can be replaced by a TTI with a duration of more than 1 ms, and a short TTI (e.g., a reduced TTI) can be replaced by a TTI with a duration of less than the length of a long TTI and not less than 1 ms.

[0174] A feature block (RB) is the unit of resource allocation in the time domain and frequency domain, and may include one or a plurality of contiguous subcarriers in the frequency domain. In addition, an RB may include one or more symbols in the time domain and may have a duration of 1 slot, 1 minislot, 1 subframe, or 1 long TTI. 1 TTI and 1 subframe may each be composed of one or more feature blocks. It is worth noting that one or more RBs may be referred to as a physical feature block (PRB (Physical RB)), a subcarrier group (SCG), a feature element group (REG), a PRB pair, an RB pair, and so on. Petition 870200039774, dated 03 / 26 / 2020, pages 51 / 63 43 / 51

[0175] In addition, a feature block can be composed of one or more feature elements (REs). For example, 1 RE can be a radio feature field of 1 subcarrier and 1 symbol.

[0176] It should be noted that the radio frame structures, subframes, slots, minislots, symbols, and other items described above are merely examples. For instance, settings regarding the number of subframes included in a radio frame, the number of slots included in a subframe, 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, symbol duration, cyclic prefix (CP) length, and so on can be changed in various ways.

[0177] In addition, the information and parameters described in this descriptive report may be represented in absolute values ​​or in relative values ​​with respect to determined values, or may be represented using other applicable information. For example, a radio feature may be specified by a particular index.

[0178] The names used for parameters and so forth in this descriptive report are by no means limiting. For example, since various channels (PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), and so forth) and information elements may be identified by any suitable name, the various names assigned to these individual channels and information elements are by no means limiting.

[0179] The information, signals and / or other elements described in this descriptive report may be represented using a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols and chips, all of which may be referenced throughout the Petition 870200039774, dated 03 / 26 / 2020, pages 52 / 63 44 / 51 descriptive report contained in the present invention, can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

[0180] Furthermore, information, signals, and so on can be transmitted from upper layers to lower layers and / or from lower layers to upper layers. Information, signals, and so on can be inserted and / or transmitted via a plurality of network nodes.

[0181] The information, signals, and so forth that are entered and / or emitted can be stored in a specific location (e.g., in memory) or can be managed in a control table. The information, signals, and so forth to be entered and / or emitted can be overwritten, updated, or appended. The information, signals, and so forth that are emitted can be deleted. The information, signals, and so forth that are entered can be transmitted to other devices.

[0182] Information reporting is by no means limited to the examples / modalities described in this descriptive report, and other methods may also be used. For example, information reporting may be implemented using physical layer signaling (e.g., downlink control information (DCI), uplink control information (UCI)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling), broadcast information (the master information block (MIB), system information blocks (SIBs), and so on), MAC (Media Access Control) signaling, and so on), and other signals and / or combinations thereof.

[0183] It is worth noting that physical layer signaling may be referred to as “L1 / L2 control information (layer 1 / layer 2) (L1 / L2 control signals)”, “L1 control information (L1 control signal)” and so on. Petition 870200039774, dated 03 / 26 / 2020, pages 53 / 63 45 / 51 Furthermore, RRC signaling can be referred to as RRC messages and can be, for example, an RRC connection configuration message, an RRC connection reconfiguration message, and so on. Additionally, MAC signaling can be reported using, for example, MAC control elements (MAC Control Elements - CEs).

[0184] Furthermore, the reporting of certain information (for example, the reporting of information in the sense that “X holds”) does not necessarily need to be sent explicitly, and can be sent implicitly (for example, by not reporting that piece of information, by reporting another piece of information and so on).

[0185] Decisions can be made on values ​​represented by 1 bit (0 or 1), they can be made on boolean values ​​representing true or false, or they can be made by comparing numerical values ​​(for example, comparison with a given value).

[0186] Software, whether referred to as software, firmware, middleware, microcode, or hardware description language, or called by other names, should be interpreted broadly as instructions, instruction sets, code, code segments, program codes, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads, procedures, functions, and so forth.

[0187] In addition, software, commands, information, and so on, can be transmitted and received via communication media. For example, when software is transmitted from a website, server, or other remote sources using wired technologies (coaxial cables, fiber optic cables, twisted-pair cables, digital subscriber lines (DSL), and so on) Petition 870200039774, dated 03 / 26 / 2020, pages 54 / 63 46 / 51 and / or wireless technologies (infrared radiation, microwaves, and so on), these wired and / or wireless technologies are also included in the definition of communication media.

[0188] The terms system and network, as used in the present invention, are used interchangeably.

[0189] As used in the present invention, the terms base station (BS), radio base station, eNB, gNB, cell, sector, cell group, carrier and component carrier can be used interchangeably. A base station can be referred to as a fixed station, NodeB, eNodeB (eNB), access point, transmit point, receive point, femtocell, small cell and so forth.

[0190] A base station may accommodate one or more (e.g., 3) cells (also referred to as sectors). When a base station accommodates a plurality of cells, the entire coverage area of ​​the base station may be partitioned into multiple smaller areas, and each smaller area may provide communication services through base station subsystems (e.g., small indoor base stations (RRHs (Remote Radio Heads))). The term “cell” or “sector” refers to all or part of the coverage area of ​​a base station and / or a base station subsystem providing communication services within that coverage.

[0191] As used in the present invention, the terms mobile station (MS), user terminal, user equipment (UE), and terminal can be used interchangeably. A base station can be referred to as a fixed station, NodeB, eNodeB (eNB), access point, transmission point, reception point, femto cell, small cell, and so forth.

[0192] A mobile station may also be referred to, for example, as Petition 870200039774, dated 03 / 26 / 2020, pages 55 / 63 47 / 51 a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a “wireless device”, a “wireless communication device”, a “remote device”, a “mobile subscriber station”, an “access terminal”, a “mobile terminal”, a “wireless terminal”, a “remote terminal”, a “handset”, a “user agent”, a mobile client, a client or other suitable terms.

[0193] Furthermore, the base radio stations contained in this descriptive report can be interpreted as user terminals. For example, each aspect / embodiment of the present invention can be applied to a configuration in which communication between a base radio station and a user terminal is replaced by communication between a plurality of user terminals (D2D (Device to Device)). In this case, the user terminals 20 can have the functions of the base radio stations 10 described above. Furthermore, terms such as uplink and downlink can be interpreted as side links. For example, an uplink channel can be interpreted as a side link channel.

[0194] In addition, the user terminals contained in this descriptive report may be interpreted as base radio stations. In that case, base radio stations 10 may have the functions of user terminals 20 described above.

[0195] Certain actions described in this descriptive report as being performed by base stations may, in some cases, be performed by their higher-level nodes. In a network composed of one or more network nodes with base stations, it is evident that several operations performed for communication with terminals may be performed by base stations, one or more network nodes (e.g., MMEs (Entities of Petition 870200039774, dated 03 / 26 / 2020, pages 56 / 63 48 / 51 Mobility Management), S-GWs (Server Gateways) and so on may be possible, but not limited to these) in addition to base stations, or combinations thereof.

[0196] The examples / embodiments illustrated in this descriptive report can be used individually or in combinations, which can be altered depending on the mode of implementation. The order of processes, sequences, flowcharts, and so on that were used to describe the examples / embodiments contained in the present invention can be rearranged provided that no inconsistencies arise. For example, although several methods have been illustrated in this descriptive report with various step components in exemplary orders, the specific orders illustrated in the present invention are by no means limiting.

[0197] The examples / modalities illustrated in this descriptive report can be applied to LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), Nova-RAT (Radio Access Technology), NR (New Radio), NX (New Radio Access), FX (Future Generation Radio Access), GSM (registered trademark) (Global System for Mobile Communications), CDMA 2000, UMB (Ultra Broadband Mobile), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra Wideband), Bluetooth (registered trademark), systems that They use other suitable radio communication systems and / or next-generation systems enhanced based on these.

[0198] The phrase "based on," as used in this descriptive report, does not mean "based solely on," unless otherwise specified. In other words, the phrase "based on" means both "based solely on." Petition 870200039774, dated 03 / 26 / 2020, pages 57 / 63 49 / 51 in and based on at least.

[0199] Reference to elements with designations such as first, second, and so forth, as used in the present invention, generally does not limit the number / quantity or order of these elements. These designations are used in the present invention only for convenience, as a method of distinguishing between two or more elements. Thus, reference to the first and second elements does not imply that only 2 elements can be employed or that the first element must precede the second element in any way.

[0200] The terms evaluate and determine, as used in the present invention, can encompass a wide variety of actions. For example, evaluate and determine, as used in the present invention, can be interpreted as meaning making evaluations and determinations related to calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or some other data structure), verifying, and so forth. Furthermore, evaluate and determine, as used in the present invention, can be interpreted as meaning making evaluations and determinations related to receiving (e.g., receiving information), transmitting (e.g., transmitting information), inserting, emitting, accessing (e.g., accessing data in memory), and so forth.Furthermore, evaluating and determining, as used in the present invention, can be interpreted as meaning making evaluations and determinations related to resolving, selecting, choosing, establishing, comparing, and so forth. In other words, evaluating and determining, as used in the present invention, can be interpreted as meaning making evaluations and determinations related to some action.

[0201] As used in the present invention, the terms connected and Petition 870200039774, dated 03 / 26 / 2020, pages 58 / 63 50 / 51 coupled, or any variation of these terms, means all direct or indirect connections or couplings 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 the elements may be physical, logical, or a combination thereof. For example, connection may be interpreted as access.

[0202] As used in the present invention, when two elements are connected, these elements can be considered connected or coupled to each other by the use of one or more electrical wires, cables and / or printed electrical connections and, as various non-limiting and non-inclusive examples, by the use of electromagnetic energy, such as electromagnetic energy with wavelengths in the radio frequency, microwave and optical regions (both visible and invisible).

[0203] In this descriptive report, the phrase A and B are different may mean that A and B are different from each other. Terms such as keep coupled and similar may also be interpreted.

[0204] When terms such as include, comprise, and variations thereof are used in this descriptive report or in the claims section, these terms shall be inclusive, in a manner similar to how the term provide is used. Furthermore, the term or, as used in this descriptive report or in the claims section, is not intended to be an exclusive disjunction.

[0205] Now, although the present invention has been described in detail above, it should be evident to a person skilled in the art that the present invention is by no means limited to the embodiments described in the present invention. The present invention can be implemented with various corrections and in various modifications, without departing from the spirit and scope of the present invention. Petition 870200039774, dated 03 / 26 / 2020, pp. 59 / 63 51 / 51 invention, which are defined based on the claims. Therefore, the description contained in the present invention is provided only for the purpose of explaining examples, and should not be interpreted as limiting the present invention in any way. Petition 870200039774, dated 03 / 26 / 2020, pp. 60 / 63

Claims

1 / 2 CLAIMS 1. Terminal (20) characterized in that it comprises: a receiving section (203) configured to receive at least one of the first configuration information about a specific reserved resource of the bandwidth portion (BWP) and second configuration information about a specific reserved resource of the cell;and a control section (401) configured to control reception processes for the Physical Downlink Shared Channel (PDSCH) under an assumption that the PDSCH is not allocated on a reserved resource corresponding to at least one of the first configuration information and the second configuration information, wherein information relating to the reserved resource is determined based on a configured BWP subcarrier spacing, and wherein the control section (401) is configured to, when information about an index of one or a plurality of reserved resource sets is configured, specify a reserved resource set based on downlink control information for scheduling.

2. Terminal (20), according to claim 1, characterized in that the control section (401) is configured to perform PDSCH rate matching under the assumption that PDSCH is not allocated in the reserved resource.

3. Radio communication method for a terminal (20) characterized in that it comprises: receiving at least one of the first configuration information about a specific reserved resource of the bandwidth portion (BWP) and second configuration information about a specific reserved resource of the cell; and Petition 870260053553, dated 02 / 06 / 2026, page.15 / 18 2 / 2 control reception processes for the Physical Downlink Shared Channel (PDSCH) under an assumption that the PDSCH is not allocated on a reserved resource corresponding to at least one of the first configuration information and the second configuration information, wherein information relating to the reserved resource is determined based on a configured BWP subcarrier spacing, and wherein when information about an index of one or a plurality of reserved resource sets is configured, a reserved resource set is specified based on downlink control information for scheduling. Petition 870260053553, dated 02 / 06 / 2026, p. 16 / 18.

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