阅读说明：本技术 用户终端以及无线通信方法 (User terminal and wireless communication method ) 是由 武田一树 永田聪 王理惠 于 2019-01-11 设计创作，主要内容包括：用户终端具备：接收单元,接收与基于动态许可的发送用的高层参数无关地被设定的第一类型的基于设定许可的发送用的高层参数；以及控制单元,根据所述第一类型的基于设定许可的发送用的高层参数,控制所述第一类型的基于设定许可的发送。(A user terminal is provided with: a reception unit that receives a first type of upper layer parameter for transmission based on a set permission, which is set independently of an upper layer parameter for transmission based on a dynamic permission; and a control unit configured to control the first type of transmission based on the setting permission, based on the higher layer parameter for the first type of transmission based on the setting permission.)

1. A user terminal is provided with:

a reception unit that receives a first type of upper layer parameter for transmission based on a set permission, which is set independently of an upper layer parameter for transmission based on a dynamic permission; and

and a control unit configured to control the transmission of the first type based on the setting permission, based on the higher layer parameter for the transmission of the first type based on the setting permission.

2. The user terminal of claim 1,

the reception means receives a second type of upper layer parameter for transmission based on a set permission set in association with the upper layer parameter for transmission based on the dynamic permission,

the control unit controls the transmission of the second type based on the setting permission based on the higher layer parameter for the transmission of the second type based on the setting permission.

3. The user terminal of claim 1,

the receiving unit receives the higher layer parameter for transmission based on the dynamic grant,

the control unit controls the transmission based on the set grant of the second type based on the higher layer parameter for transmission based on the dynamic grant.

4. The user terminal of any of claims 1 to 3,

the control means controls the first type of transmission based on the setting permission based on the higher layer parameter for the first type of transmission based on the setting permission, in a case where the first type of transmission based on the setting permission is initial transmission.

5. The user terminal of any of claims 1 to 4,

the control means controls the first type of transmission based on the set grant based on the higher layer parameter for transmission based on the dynamic grant, when the first type of transmission based on the set grant is retransmission.

6. A wireless communication method, comprising:

receiving a first type of upper layer parameter for transmission based on a set permission, which is set independently of the upper layer parameter for transmission based on the dynamic permission; and

and controlling the transmission of the first type based on the setting permission based on the higher layer parameter for the transmission of the first type based on the setting permission.

Technical Field

The present disclosure relates to a user terminal and a wireless communication method in a next generation mobile communication system.

Background

In a UMTS (Universal Mobile Telecommunications System) network, LTE (Long Term Evolution) is standardized for the purpose of further high data rate, low latency, and the like (non-patent document 1). In addition, LTE-Advanced (3GPP rel.10-14) is standardized for the purpose of further large capacity, Advanced, and the like of LTE (3GPP (Third Generation Partnership Project) Rel. (Release) 8, 9).

Successor systems of LTE, such as those also referred to as 5G (5th generation mobile communication system), 5G + (plus), NR (New Radio), 3GPP release (Rel.)15 and beyond, are also being studied.

Documents of the prior art

Non-patent document

Non-patent document 1: 3GPP TS 36.300V8.12.0 "Evolved Universal Radio Access (E-UTRA) and Evolved Universal Radio Access Network (E-UTRAN); (ii) an Overall description; stage 2(Release 8) ", 4 months 2010

Disclosure of Invention

Problems to be solved by the invention

In future wireless communication systems (for example, NR), transmission of an Uplink Shared Channel (for example, a Physical Uplink Shared Channel) using a dynamic grant (also referred to as dynamic grant transmission) and transmission of an Uplink Shared Channel using a set grant (also referred to as set grant transmission) are being studied.

However, when a User terminal (e.g., UE (User Equipment)) supports both transmission based on dynamic grant and transmission based on setting grant, there is a limit to setting of high-layer parameters, and as a result, there is a concern that: transmission based on the setting permission (for example, also referred to as setting permission type 1transmission, first type transmission based on the setting permission, and the like, which will be described later) cannot be appropriately controlled.

Accordingly, an object of the present disclosure is to provide a user terminal and a wireless communication method capable of appropriately controlling transmission based on setting permission.

Means for solving the problems

A user terminal according to an aspect of the present disclosure includes: a reception unit that receives a first type of upper layer parameter for transmission based on a set permission, which is set independently of an upper layer parameter for transmission based on a dynamic permission; and a control unit configured to control the first type of transmission based on the setting permission, based on the higher layer parameter for the first type of transmission based on the setting permission.

Effects of the invention

According to an aspect of the present disclosure, transmission based on setting permission can be appropriately controlled.

Drawings

Fig. 1A and 1B are diagrams illustrating an example of DCI.

Fig. 2A and 2B are diagrams showing an example of the high layer parameter according to the first embodiment.

Fig. 3 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment.

Fig. 4 is a diagram showing an example of the configuration of a base station according to an embodiment.

Fig. 5 is a diagram showing an example of the configuration of a user terminal according to an embodiment.

Fig. 6 is a diagram showing an example of hardware configurations of a base station and a user terminal according to an embodiment.

Detailed Description

< Transmission based on dynamic permission and Transmission based on setting permission (type 1, type 2) >

In NR, transmission based on dynamic grant (dynamic grant-based transmission) and transmission based on set grant (configured grant-based transmission) are being studied.

The transmission based on the dynamic grant is UL transmission using an Uplink Shared Channel (e.g., PUSCH (Physical Uplink Shared Channel)) based on Downlink Control Information (DCI)) (UL grant) or DL transmission using a Downlink Shared Channel (e.g., PDSCH (Physical Downlink Shared Channel)) based on DCI (DL assignment).

Parameters based on the availability of dynamic grants (which may also be referred to as dynamic grant based transmission parameters, dynamic grant parameters, etc.) may also be specified to the UE using DCI as well as higher layer parameters.

For example, the dynamic grant parameter may be set using at least one of PUSCH setting information (e.g., RRC control element "PUSCH-Config") and DCI including or attached with CRC (Cyclic Redundancy Check) bits (CRC-scrambled) scrambled by a specific RNTI (e.g., Cell-Radio Network Temporary Identifier).

The PUSCH configuration information may include: the information may include at least one of an identifier (dataScramblingIdentityPUSCH) used for scrambling primary data of a PUSCH, transmission setting (for example, based on a codebook or based on a non-codebook), a codebook subset, a maximum rank, information on UCI (UCI on PUSCH) on the PUSCH, and information on a modulation scheme (p-pi2BPSK) applied in transform precoding.

The transmission based on the setting grant is UL transmission using an uplink shared channel (e.g., PUSCH) based on setting (configuration) information (which may be referred to as a setting grant (configured grant), a setting UL grant (configured UL grant), or the like) set by the higher layer, or DL transmission using a downlink shared channel (e.g., PDSCH) based on configuration information (e.g., sps-configuration) set by the higher layer.

In the transmission based on the setting grant, UL resources are already allocated to the UE, and the UE can autonomously perform UL transmission using the set resources, and therefore realization of low-latency communication can be expected.

The Transmission based on the dynamic grant may also be referred to as a PUSCH (dynamic grant-based PUSCH), a UL Transmission with a dynamic grant (UL Transmission with dynamic grant), a PUSCH (PUSCH) with a dynamic grant), a UL Transmission with a UL grant (UL Transmission with a UL grant), a Transmission based on a UL grant (UL grant-based Transmission), a UL Transmission scheduled by a dynamic grant (with Transmission resources set), or the like.

The Transmission based on the setting grant may be referred to as a PUSCH (configured grant-based PUSCH) based on the setting grant, a UL Transmission with the setting grant (UL Transmission with the setting grant), a PUSCH (PUSCH with the setting grant), a UL Transmission without the UL grant (UL Transmission with the setting grant), a Transmission without the UL grant (UL grant-free Transmission), a UL Transmission scheduled by the setting grant (Transmission resource-set), or the like.

Furthermore, the DL transmission based on the set grant may also be referred to as Semi-Persistent Scheduling (SPS). Further, UL transmission based on the setting grant may also be referred to as UL SPS. In the present disclosure, "setup permission" may also be interchanged with "SPS", "SPS/setup permission", and the like.

Regarding transmission based on the setting permission, several types (type 1, type 2, etc.) are being studied.

The parameter for setting the grant type 1transmission (type 1 setting grant) (which may also be referred to as a transmission parameter based on the setting grant, a setting grant parameter for type 1, or the like) may be set to the UE using a higher layer parameter without using Downlink Control Information (DCI).

For example, the type 1 Configuration permission parameter may be set using at least one of Configuration permission Configuration information (e.g., RRC information element "configurable Grant Configuration") and the PUSCH Configuration information (e.g., RRC control element "PUSCH-Configuration").

The configuration Grant setting information for type 1 may include a configuration Uplink Grant (Configured Uplink Grant) (for example, RRC control element "RRC _ configurable Uplink Grant"). The setting permission setting information may include, for example: frequency hopping, a reference signal for Demodulation (DMRS), a Modulation and Coding Scheme (MCS) table, the presence or absence of application of transform precoding, the number of HARQ processes, the number of repetitions, a Redundancy Version (RV) sequence used for the repeated transmission, and information related to at least one of the periods.

The setting of the uplink grant may include, for example: information related to at least one of a time domain offset, a time domain allocation, a frequency domain allocation, an antenna port, an initialization of a DMRS, an SRS (Sounding Reference Signal) resource identifier, an MCS, a transport block size, a frequency hopping offset, and a path loss Reference index.

Parameters for setting a grant type 2transmission (type 2 setting grant) (which may also be referred to as transmission parameters based on a setting grant, setting grant parameters, type 2 setting grant parameters, and the like) may be assigned to the UE using DCI and higher layer parameters.

For example, the type 2 setting permission parameter may be set using at least one of setting permission setting information (e.g., RRC information element "configuredgontfig"), the above-described PUSCH setting information (e.g., RRC control element "PUSCH-Config"), and DCI CRC-scrambled by a specific RNTI (e.g., a setting Scheduling Radio Network Temporary Identifier (CS-RNTI)).

The configuration permission setting information for type 2 is the same as the configuration permission setting information for type 1, except that it does not include a configuration uplink permission (for example, RRC control element "RRC-configurable uplink grant"). At least one of the information included in the set uplink grant may be included in DCI scrambled with a specific RNTI (e.g., CS-RNTI). For example, parameters other than the RRC control element "RRC-configurable uplink grant" in the RRC information element "configurable grantconfig" may be shared in the set grant type 1transmission and the set grant type 2 transmission.

The UE may determine that one or more setting permission type 2 transmissions are triggered when one or more setting permission setting information for type 1 is set. The UE may control PUSCH transmission without dynamic grant using resources set by the set grant setting information for type 1 (which may also be referred to as set grant resources, transmission opportunities (transmission opportunity), and the like). In addition, even when transmission based on the setting permission is set, the UE may skip transmission based on the setting permission when there is no data in the transmission buffer.

The UE may determine that one or more of the set permission types 2 are triggered or activated when one or more of the set permission set information for type 2 is set and DCI for activation is received. The DCI for activation may be DCI (e.g., DCI format 0_0 or 0_1) scrambled by a specific RNTI (e.g., CS-RNTI). The DCI may be used to set control of deactivation (deactivation) and retransmission of the grant.

For example, when receiving the DCI for activation with the set grant type 2, the UE may control PUSCH transmission using resources specified by the set grant setting information for type 2 and parameters (for example, at least one of a time domain offset, a time domain allocation, a frequency domain allocation, an antenna port, initialization of DMRS, SRS resource identifier, MCS, a transport block size, a frequency hopping offset, and a path loss reference index) in the DCI for activation.

The UE may release (may also be referred to as release or deactivation) a resource (PUSCH) corresponding to the set grant type 2transmission based on DCI for deactivating the set grant type 2transmission or expiration of a specific timer (elapse of a specific time). In addition, even when the set permission type 2transmission is activated (in an active state), the UE can skip the transmission based on the set permission when there is no data in the transmission buffer.

As described above, transmission by dynamic grant is controlled using a higher layer parameter (e.g., the PUSCH setting information) and DCI (e.g., DCI format 0_0 or 0_1 CRC-scrambled by C-RNTI).

Also, the set grant type 1transmission is controlled not by DCI but by using a higher layer parameter (for example, set grant setting information including the set uplink grant and PUSCH setting information). On the other hand, the set grant type 2transmission is controlled by using a higher layer parameter (for example, set grant setting information and PUSCH setting information not including the set uplink grant) and DCI (for example, DCI format 0_0 or 0_1 CRC-scrambled by CS-RNTI).

In addition, studies are being made to make the size of DCI used for transmission based on dynamic grant (for example, DCI subjected to CRC scrambling using C-RNTI) and DCI used for transmission based on set grant (for example, DCI subjected to CRC scrambling using CS-RNTI) the same (for example, fig. 1A).

In addition, studies are being made to use NDI (New Data Indicator), New Data identifier (value of NDI) within DCI CRC-scrambled by CS-RNTI for the identification of activation (or deactivation) and retransmission. For example, NDI "0" may also indicate activation or deactivation, and NDI "1" may also indicate retransmission. Therefore, studies are being made to fix the position of the NDI in the DCI for activation (or deactivation) or the DCI for retransmission so that the UE can recognize the DCI for activation (or deactivation) or the DCI for retransmission (for example, fig. 1B).

As shown in fig. 1B, the size (payload size, bit number) of DCI varies according to a specific condition (e.g., a PUSCH waveform, a resource allocation type, and the like). Specifically, the size (number of bits) of a specific field (e.g., frequency domain resource allocation field) within DCI is variable. In addition, the presence or absence of a specific field (for example, a hopping flag field) in DCI is also variable.

In this way, in NR, it is required to equalize the size among a plurality of DCIs of the same DCI format CRC-scrambled by different RNTIs (e.g., C-RNTI and CS-RNTI). Further, it is required that the position of a specific field (e.g., NDI field) is the same among a plurality of DCIs CRC-scrambled by a specific RNTI (e.g., CS-RNTI).

In order to satisfy such a requirement (requirement), it is under study to set a limit for a higher-level parameter. For example, the set value restriction is set for the higher layer parameters for transmission based on the dynamic grant (for example, the PUSCH setting information) and the higher layer parameters for transmission based on the setting grant (for example, the setting grant type 1transmission and the setting grant type 2 transmission) (for example, the setting grant setting information and the PUSCH setting information).

On the other hand, as described above, DCI is not used in the set permission type 1transmission, unlike the set permission type 2 transmission. Therefore, it is not necessary to set the above-described restriction on the setting value for the higher layer parameter for setting the grant type 1transmission (for example, the setting grant setting information and the PUSCH setting information). Instead, there is a possibility that the setting permission type 1transmission cannot be flexibly controlled due to the limitation of the setting value.

If the requirements regarding the DCI size and the position of the specific field are satisfied between the transmission based on the dynamic grant and the set grant type 2transmission, the UE can appropriately control the transmission based on the dynamic grant and the set grant type 2transmission even if no restriction is set on the setting value of the higher layer parameter for setting the grant type 1 transmission.

The inventors of the present invention have conceived that transmission based on the setting permission is appropriately controlled by changing at least one of the restriction conditions for the high-layer setting (high-layer configuration) and the setting parameters (configuration parameters) according to the type of transmission based on the setting permission.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. In addition, at least one feature of the first to third modes can be applied in combination. In this embodiment, "one or more" may mean one of one (one) or a plurality of (plural).

(first mode)

In the first aspect, the setting of the higher layer parameter for transmission based on the setting permission may be controlled according to the type of transmission based on the setting permission.

Specifically, the upper layer parameter for the set permission type 1transmission (first type of transmission based on the set permission) may be set without using (without matching with, without being correlated with, independently of (independent of), or separately from (separate) the upper layer parameter for the transmission based on the dynamic permission (for example, a parameter in the above-described PUSCH setting information) (for example, fig. 2A and 2B).

The higher layer parameter for setting grant type 1transmission may include, for example, at least one piece of information in the setting grant setting information (for example, RRC information element "ConfiguredGrantConfig") for type 1. The higher layer parameter for setting the grant type 1transmission may include at least one piece of information in the PUSCH setting information (for example, RRC control element "PUSCH-Config"), for example.

On the other hand, the higher layer parameter for the set grant type 2transmission (transmission based on the set grant of the second type) may be set based on (in accordance with, in association with, included in, or the same as) the higher layer parameter for the transmission based on the dynamic grant (for example, a parameter in the above-described PUSCH setting information).

In this case, as shown in fig. 2A, the upper layer parameter for setting the permission type 2transmission itself is not set, and the upper layer parameter for dynamic permission type transmission may be used to set the permission type 2transmission (may be referred to as a higher layer parameter for setting the permission type 2 transmission).

Alternatively, as shown in fig. 2B, the higher layer parameter for setting the grant type 2transmission may be set to the UE separately from the higher layer parameter for dynamic grant type transmission. In this case, the set value for setting at least a part of the upper layer parameters for the permission type 2transmission may be based on the set value of the upper layer parameters for the dynamic permission type transmission (for example, the same may be applied).

The higher layer parameter for setting permission type 2transmission may include, for example, at least one piece of information in the setting permission setting information (for example, RRC information element "ConfiguredGrantConfig") for type 2. The higher layer parameter for setting the grant type 2transmission may include at least one piece of information in the PUSCH setting information (for example, RRC control element "PUSCH-Config"), for example. As described with reference to fig. 2A, the higher layer parameter for transmission based on the dynamic grant may be replaced with the higher layer parameter for transmission based on the set grant type 2.

The higher layer parameter for transmission of the set permission type 2 set based on the higher layer parameter for transmission of the dynamic permission may be a parameter that affects at least one of the DCI size and the position of the specific field (for example, NDI). The parameter may be at least one of a parameter for setting the presence or absence of cross-carrier scheduling, a parameter for setting a Secondary Uplink (SUL) carrier, a parameter for setting a frequency resource allocation type of a PUSCH (dynamic switching of type 1, type 2, or type 1/2), a parameter for setting the presence or absence of frequency hopping of a PUSCH, and the like.

The UE may determine the higher layer parameter to be used according to whether transmission based on the setting permission is initial transmission or retransmission (initial transmission or retransmission).

For example, the UE may control initial transmission of the set grant type 1transmission based on a higher layer parameter for setting grant type 1 that is set separately from a higher layer parameter for dynamic grant (for example, RRC control element "pusch-Config") (for example, fig. 2A and 2B).

On the other hand, the UE may control retransmission of the set grant type 1transmission (e.g., fig. 2A) based on a higher layer parameter based on the dynamic grant (e.g., RRC control element "pusch-Config"), or may control retransmission of the set grant type 1transmission (e.g., fig. 2B) based on a higher layer parameter for the set grant type 2 transmission.

The UE may control at least one of the initial transmission and the retransmission for the set grant type 2transmission according to a higher layer parameter (e.g., at least one parameter in the RRC control element "pusch-Config") based on the dynamic grant.

Specifically, the UE may control setting of at least one of initial transmission and retransmission of the grant type 2transmission according to (reuse of) a higher layer parameter (for example, at least one parameter in the RRC control element "pusch-Config") based on the dynamic grant, regardless of whether the DCI size or the position of the specific field (for example, NDI) is affected (for example, fig. 2A).

Alternatively, the UE may change a parameter used for setting at least one of the initial transmission and the retransmission of the grant type 2transmission according to whether or not the DCI size or the position of the specific field (for example, NDI) is affected.

For example, the UE may control at least one of initial transmission and retransmission for the set grant type 2transmission using a higher layer parameter that is set separately for the set grant type 2transmission, with respect to a parameter that does not affect the DCI size or the position of the specific field (for example, NDI) (for example, fig. 2B).

On the other hand, regarding the parameter that affects the DCI size or the position of the specific field (for example, NDI), the UE may reuse the value of a higher layer parameter (for example, at least one parameter in the RRC control element "pusch-Config") based on the dynamic grant to control at least one of the initial transmission and the retransmission of the set grant type 2transmission (for example, fig. 2B).

Alternatively, the value of the higher layer parameter for setting the grant type 2transmission may be set to be the same as the value of the higher layer parameter (for example, at least one parameter in the RRC control element "pusch-Config") based on the dynamic grant. In this case, the UE may control at least one of initial transmission and retransmission of the set permission type 2transmission using a higher layer parameter set for the set permission type 2transmission alone.

In addition, when retransmission is scheduled by DCI (for example, DCI subjected to CRC scrambling by CS-RNTI), the UE may perform control based on a higher layer parameter (for example, at least one parameter in the RRC control element "pusch-Config") available by dynamic grant, regardless of the type of transmission based on the set grant.

In addition, the position of the specific field (for example, NDI) may not be fixed in DCI scheduling retransmission for setting the grant type 1 transmission. This is because, in setting permission type 1transmission, since DCI for activation or deactivation is not used, it is not necessary to identify whether to use for retransmission by NDI.

(Wireless communication System)

Hereinafter, a configuration of a radio communication system according to an embodiment of the present disclosure will be described. In this radio communication system, communication is performed using any one of the radio communication methods according to the above embodiments of the present disclosure, or a combination thereof.

Fig. 3 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using LTE (Long Term Evolution) standardized by 3GPP (Third Generation Partnership Project), 5G NR (5th Generation mobile communication system New Radio), and the like.

The wireless communication system 1 may also support a Dual connection (MR-DC) between multiple RATs (Radio Access Technology) to support a Multi-RAT Dual connection. The MR-DC may include Dual connection of LTE (Evolved Universal Terrestrial Radio Access) and NR (E-UTRA-NR Dual connection (EN-DC: E-UTRA-NR Dual connection)), Dual connection of NR and LTE (NR-E-UTRA Dual connection (NE-DC: NR-E-UTRA Dual connection), and the like.

In EN-DC, a base station (eNB) of LTE (E-UTRA) is a primary Node (MN: Master Node), and a base station (gNB) of NR is a Secondary Node (SN: Secondary Node). In NE-DC, the base station of NR (gNB) is MN and the base station of LTE (E-UTRA) (eNB) is SN.

The wireless communication system 1 may also support Dual connection between a plurality of base stations within the same RAT (for example, Dual connection of a base station (gNB) in which both MN and SN are NR (NR-NR Dual connection))).

The wireless communication system 1 may include: a base station 11 forming a macro cell C1 having a relatively wide coverage area, and base stations 12(12a to 12C) arranged in the macro cell C1 and forming a small cell C2 narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The arrangement, number, and the like of each cell and user terminal 20 are not limited to the embodiments shown in the figures. Hereinafter, base stations 11 and 12 will be collectively referred to as base station 10 without distinction.

The user terminal 20 may also be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of Carrier Aggregation (Carrier Aggregation) and Dual Connectivity (DC) using a plurality of Component Carriers (CCs).

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

The user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

The plurality of base stations 10 may also be connected by wire (e.g., CPRI (Common Public Radio Interface) -based optical fiber, X2 Interface, or the like) or wireless (e.g., NR communication). For example, when NR communication is used as a Backhaul between base stations 11 and 12, base station 11 corresponding to an upper station may be referred to as an IAB (Integrated Access Backhaul) donor (donor) and base station 12 corresponding to a relay (relay) may be referred to as an IAB node.

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

The user terminal 20 may be a terminal supporting at least one of communication schemes such as LTE, LTE-a, and 5G.

The radio communication system 1 may use an Orthogonal Frequency Division Multiplexing (OFDM) radio access scheme. For example, at least one of the Downlink (DL) and the Uplink (UL) may use CP-OFDM (cyclic Prefix OFDM), DFT-s-OFDM (discrete Fourier Transform Spread OFDM), OFDMA (Orthogonal Frequency Division Multiple Access), SC-FDMA (Single Carrier Frequency Division Multiple Access), or the like.

The radio access method may also be referred to as a waveform (waveform). In the radio communication system 1, other radio access schemes (for example, other single-carrier transmission schemes and other multi-carrier transmission schemes) may be applied to the UL and DL radio access schemes.

In the radio communication system 1, as the Downlink Channel, a Downlink Shared Channel (Physical Downlink Shared Channel (PDSCH)), a Broadcast Channel (Physical Broadcast Channel), a Downlink Control Channel (Physical Downlink Control Channel ()), and the like, which are Shared by the user terminals 20, may be used.

In the radio communication system 1, as the Uplink Channel, an Uplink Shared Channel (Physical Uplink Shared Channel), an Uplink Control Channel (Physical Uplink Control Channel), a Random Access Channel (Physical Random Access Channel), and the like, which are Shared by the user terminals 20, may be used.

User data, higher layer control Information, SIB (System Information Block), and the like are transmitted through the PDSCH. User data, higher layer control information, etc. may also be transmitted over the PUSCH. Also, MIB (Master Information Block) may also be transmitted through PBCH.

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

The DCI scheduling PDSCH may be referred to as DL assignment, DL DCI, or the like, and the DCI scheduling PUSCH may be referred to as UL grant, UL DCI, or the like. In addition, the PDSCH may be replaced with DL data and the PUSCH may be replaced with UL data.

In the detection of PDCCH, a COntrol REsource SET (CORESET: COntrol REsource SET) and a search space (search space) may be used. CORESET corresponds to searching for DCI resources. The search space corresponds to a search region and a search method of PDCCH candidates (PDCCH candidates). 1 CORESET may also be associated with 1 or more search spaces. The UE may also monitor the CORESET associated with a certain search space based on the search space settings.

One SS may correspond to PDCCH candidates corresponding to 1 or more aggregation levels (aggregation levels). The 1 or more search spaces may also be referred to as a set of search spaces. In addition, "search space", "search space set", "search space setting", "search space set setting", "CORESET setting", and the like of the present disclosure may be replaced with each other.

The PUCCH may also be used to transmit Information including Channel State Information (CSI), acknowledgement Information (e.g., HARQ-ACK (Hybrid Automatic Repeat reQuest), ACK/NACK, etc.), Scheduling ReQuest (SR), and the like. A random access preamble for establishing a connection with a cell may also be transmitted through the PRACH.

In addition, in the present disclosure, a downlink, an uplink, and the like may also be expressed without "link". Further, it can be said that "Physical (Physical)" is not attached to the head of each channel.

In the wireless communication system 1, a Synchronization Signal (SS), a Downlink Reference Signal (DL-RS), and the like may be transmitted. In the wireless communication system 1, the DL-RS may transmit 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), and the like.

The Synchronization Signal may be at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), for example. The signal blocks containing the SS (PSS, SSs) and PBCH (and DMRS for PBCH) may also be referred to as SS/PBCH blocks, SSB (SS Block), and the like. In addition, SS, SSB, etc. may also be referred to as reference signals.

In addition, in the wireless communication system 1, a measurement Reference Signal (Sounding Reference Signal (SRS)), a demodulation Reference Signal (DMRS), and the like may be transmitted as an Uplink Reference Signal (UL-RS). The DMRS may also be referred to as a user terminal specific Reference Signal (UE-specific Reference Signal).

(base station)

Fig. 4 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 transmitting/receiving unit 120, a transmitting/receiving antenna 130, and a transmission line interface (transmission line interface) 140. The control unit 110, the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission line interface 140 may be provided in one or more numbers.

In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and the base station 10 can be assumed to have other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured by a controller, a control circuit, and the like described based on common knowledge in the technical field of the present disclosure.

The control unit 110 may also control generation of signals, scheduling (e.g., resource allocation, mapping), and the like. The control unit 110 may control transmission and reception, measurement, and the like using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. Control section 110 may generate data, control information, sequence (sequence), and the like to be transmitted as a signal, and forward the generated data, control information, sequence, and the like to transmission/reception section 120. The control unit 110 may perform call processing (setting, release, and the like) of a communication channel, state management of the base station 10, management of radio resources, and the like.

The transceiver 120 may also include a baseband (baseband) unit 121, an RF (Radio Frequency) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transmission/reception section 120 can be configured by a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transmission/reception circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmission/reception unit 120 may be configured as an integrated transmission/reception unit, or may be configured by a transmission unit and a reception unit. The transmission unit may be constituted by the transmission processing unit 1211 and the RF unit 122. The receiving unit may be configured by the reception processing unit 1212, the RF unit 122, and the measurement unit 123.

The transmitting/receiving antenna 130 can be configured by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna.

The transmitting/receiving unit 120 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transmission/reception unit 120 may receive the uplink channel, the uplink reference signal, and the like.

Transmit/receive section 120 may form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

For example, with respect to Data, Control information, and the like acquired from Control section 110, transmission/reception section 120 (transmission processing section 1211) may perform processing of a PDCP (Packet Data Convergence Protocol) layer, processing of an RLC (Radio Link Control) layer (for example, RLC retransmission Control), processing of an MAC (Medium Access Control) layer (for example, HARQ retransmission Control), and the like, and generate a bit string to be transmitted.

Transmission/reception section 120 (transmission processing section 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-analog conversion on a bit sequence to be transmitted, and output a baseband signal.

The transmission/reception unit 120(RF unit 122) may perform modulation, filter processing, amplification, and the like for a baseband signal in a radio frequency band, and transmit a signal in the radio frequency band via the transmission/reception antenna 130.

On the other hand, the transmission/reception unit 120(RF unit 122) may perform amplification, filter processing, demodulation to a baseband signal, and the like on a signal of a radio frequency band received by the transmission/reception antenna 130.

Transmission/reception section 120 (reception processing section 1212) may acquire user data and the like by applying reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filter processing, demapping, demodulation, decoding (including error correction decoding, if necessary), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal.

The transmission/reception unit 120 (measurement unit 123) may also perform measurement related to the received signal. For example, measurement section 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, and the like based on the received signal. Measurement section 123 may perform measurement of Received Power (for example, RSRP (Reference Signal Received Power)), Received Quality (for example, RSRQ (Reference Signal Received Quality)), SINR (Signal to Interference plus Noise Ratio)), SNR (Signal to Noise Ratio)), Signal Strength (for example, RSSI (Received Signal Strength Indicator)), propagation path information (for example, CSI), and the like. The measurement results may also be output to the control unit 110.

The transmission path interface 140 may transmit and receive signals (backhaul signaling) to and from devices included in the core network 30, other base stations 10, and the like, or may acquire and transmit user data (user plane data) and control plane data and the like for the user terminal 20.

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

In addition, transmission/reception section 120 may transmit various upper layer parameters. Furthermore, transmission/reception section 120 may transmit various DCI.

(user terminal)

Fig. 5 is a diagram showing an example of the configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission/reception unit 220, and a transmission/reception antenna 230. Further, the control unit 210, the transmission/reception unit 220, and the transmission/reception antenna 230 may be provided with one or more antennas.

In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, but the user terminal 20 may be assumed to have other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured by a controller, a control circuit, and the like described based on common knowledge in the technical field of the present disclosure.

The control unit 210 may also control the generation, mapping, etc. of the signals. Control section 210 may control transmission/reception, measurement, and the like using transmission/reception section 220 and transmission/reception antenna 230. Control section 210 may generate data, control information, a sequence, and the like to be transmitted as a signal, and forward the generated data, control information, sequence, and the like to transmission/reception section 220.

The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212. The transmitting/receiving section 220 can be configured by a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmission/reception unit 220 may be configured as an integrated transmission/reception unit, or may be configured by a transmission unit and a reception unit. The transmission section may be constituted by the transmission processing section 2211 and the RF section 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measuring unit 223.

The transmission/reception antenna 230 can be configured by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna.

The transmitting/receiving unit 220 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transmission/reception unit 220 may receive the uplink channel, the uplink reference signal, and the like.

Transmit/receive section 220 may form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

For example, transmission/reception section 220 (transmission processing section 2211) may perform processing in the PDCP layer, processing in the RLC layer (for example, RLC retransmission control), processing in the MAC layer (for example, HARQ retransmission control), and the like on data, control information, and the like acquired from control section 210, and generate a bit sequence to be transmitted.

Transmission/reception section 220 (transmission processing section 2211) may perform transmission processing such as channel coding (including error correction coding as well), modulation, mapping, filter processing, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on a bit sequence to be transmitted, and output a baseband signal.

Whether or not DFT processing is applied may be set based on transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is active (enabled), transmission/reception section 220 (transmission processing section 2211) may perform DFT processing as the transmission processing in order to transmit the channel using a DFT-s-OFDM waveform, or otherwise, transmission/reception section 220 (transmission processing section 2211) may not perform DFT processing as the transmission processing.

The transmission/reception section 220(RF section 222) may perform modulation, filtering, amplification, and the like for a baseband signal in a radio frequency band, and transmit a signal in the radio frequency band via the transmission/reception antenna 230.

On the other hand, the transmission/reception section 220(RF section 222) may perform amplification, filter processing, demodulation to a baseband signal, and the like on a signal in a radio frequency band received by the transmission/reception antenna 230.

Transmission/reception section 220 (reception processing section 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, decoding (including error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data.

The transceiver unit 220 (measurement unit 223) may also perform measurements related to the received signal. For example, the measurement unit 223 may also perform RRM measurement, CSI measurement, and the like based on the received signal. Measurement unit 223 may also measure for received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), and the like. The measurement result may also be output to the control unit 210.

The transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting/receiving unit 220, the transmitting/receiving antenna 230, and the transmission path interface 240.

In addition, transmission/reception section 220 may receive various upper layer parameters. Furthermore, transmission/reception section 220 may receive various DCI.

Specifically, transmission/reception section 220 may receive a first type of upper layer parameter for transmission based on the setting permission, which is set independently of an upper layer parameter for transmission based on the dynamic permission.

Furthermore, transmission/reception section 220 may receive a second type of upper layer parameter for transmission based on the setting permission, which is set in association with the upper layer parameter for transmission based on the dynamic permission.

Furthermore, transmission/reception section 220 may receive a higher layer parameter for transmission based on dynamic grant.

Control section 210 may control the transmission of the first type based on the setting permission based on the higher layer parameter for the transmission of the first type based on the setting permission.

Control section 210 may control transmission of the second type based on the setting permission based on the higher layer parameter for transmission of the second type based on the setting permission.

Control section 210 may control the transmission based on the set grant of the second type based on the higher layer parameter for transmission based on the dynamic grant.

When the first type of transmission based on the setting permission is the initial transmission, control section 210 may control the first type of transmission based on the setting permission based on the higher layer parameter for the first type of transmission based on the setting permission.

When the first type of transmission based on the set grant is retransmission, control section 210 may control the first type of transmission based on the set grant based on the higher layer parameter for transmission based on the dynamic grant.

(hardware construction)

The block diagram used in the description of the above embodiment shows blocks in functional units. These functional blocks (structural units) are realized by any combination of at least one of hardware and software. The method of implementing each functional block is not particularly limited. That is, each functional block may be implemented by one apparatus that is physically or logically combined, or may be implemented by a plurality of apparatuses that are directly or indirectly (for example, by wire or wireless) connected to two or more apparatuses that are physically or logically separated. The functional blocks may also be implemented by combining the above-described apparatus or apparatuses with software.

Here, the functions include judgment, determination, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcasting), notification (notification), communication (communicating), forwarding (forwarding), configuration (setting), reconfiguration (resetting), allocation (allocating, mapping), assignment (assigning), and the like, but are not limited to these. For example, a function block (a configuration unit) that realizes a transmission function may also be referred to as a transmission unit (transmitting unit), a transmitter (transmitter), or the like. Any of these methods is not particularly limited, as described above.

For example, the base station, the user terminal, and the like in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 6 is a diagram showing an example of hardware configurations of a base station and a user terminal according to an embodiment. The base station 10 and the 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, and the like.

In addition, in the present disclosure, terms such as device, circuit, apparatus, section (section), unit, and the like can be substituted for each other. The hardware configurations of the base station 10 and the user terminal 20 may include one or more of the respective devices shown in the drawings, or may not include some of the devices.

For example, only one processor 1001 is illustrated, but there may be multiple processors. The processing may be executed by one processor, or may be executed by two or more processors simultaneously, sequentially, or by another method. Further, the processor 1001 may be implemented by one or more chips.

Each function of the base station 10 and the user terminal 20 is realized by, for example, reading specific software (program) into hardware such as the processor 1001 and the memory 1002, performing an operation by the processor 1001 to control communication via the communication device 1004, or controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.

The processor 1001 controls the entire computer by operating an operating system, for example. The processor 1001 may be configured by a Central Processing Unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, at least a part of the control unit 110(210), the transmitting and receiving unit 120(220), and the like may be implemented by the processor 1001.

Further, the processor 1001 reads out a program (program code), a software module, data, and the like from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiments can be used. For example, the control unit 110(210) may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and may be similarly realized for other functional blocks.

The Memory 1002 may be a computer-readable recording medium, and may be configured by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory (primary storage), or the like. The memory 1002 can store a program (program code), a software module, and the like that are executable to implement the wireless communication method according to one embodiment of the present disclosure.

The storage 1003 may be a computer-readable recording medium, and may be configured by at least one of a flexible disk (flexible Disc), a Floppy (registered trademark) disk, an optical disk (e.g., a Compact Disc-read only memory (CD-ROM)), a digital versatile Disc (dvd), a Blu-ray (registered trademark) disk (Blu-ray Disc), a removable disk (removable Disc), a hard disk drive, a smart card (smart card), a flash memory device (e.g., a card (card), a stick (stick), a key drive (keydrive)), a magnetic stripe (stripe), a database, a server, and other suitable storage media. The storage 1003 may also be referred to as a secondary storage device.

The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like, for example. Communication apparatus 1004 may be configured to include a high-Frequency switch, a duplexer, a filter, a Frequency synthesizer, and the like, in order to realize at least one of Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD). For example, the transmitting/receiving unit 120(220), the transmitting/receiving antenna 130(230), and the like described above may be implemented by the communication device 1004. The transmitting/receiving unit 120(220) may be physically or logically separately installed from the transmitting unit 120a (220a) and the receiving unit 120b (220 b).

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED (Light Emitting Diode) lamp, or the like) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

Further, the processor 1001, the memory 1002, and other devices are connected by a bus 1007 for communicating information. The bus 1007 may be formed by a single bus, or may be formed by different buses between the respective devices.

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 ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like, and a part or all of the functional blocks may be implemented by the hardware. For example, the processor 1001 may also be installed with at least one of these hardware.

(modification example)

In addition, terms described in the present disclosure and terms required for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, channels, symbols, and signals (signals or signaling) may be substituted for one another. Further, the signal may also be a message. The reference signal may also be referred to as rs (reference signal) for short, and may also be referred to as Pilot (Pilot), Pilot signal, or the like, depending on the applied standard. In addition, a Component Carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, and the like.

A radio frame may also be made up of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more slots in the time domain. The subframe may also be a fixed time length (e.g., 1ms) independent of a parameter set (numerology).

Here, the parameter set may also refer to a communication parameter applied in at least one of transmission and reception of a certain signal or channel. For example, the parameter set may indicate at least one of SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), the number of symbols per TTI, radio frame structure, specific filtering processing performed by the transceiver in the frequency domain, specific windowing processing performed by the transceiver in the Time domain, and the like.

The slot may also be formed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. Further, the time slot may also be a time unit based on a parameter set.

A timeslot may also contain multiple mini-slots. Each mini-slot may also be made up of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be made up of a fewer number of symbols than a slot. PDSCH (or PUSCH) transmitted in a time unit larger than a mini slot may also be referred to as PDSCH (PUSCH) mapping type a. PDSCH (or PUSCH) transmitted using mini-slots may also be referred to as PDSCH (PUSCH) mapping type B.

The radio frame, subframe, slot, mini-slot, and symbol all represent a unit of time when a signal is transmitted. The radio frame, subframe, slot, mini-slot, and symbol may also use other names corresponding to each. In addition, time units such as frames, subframes, slots, mini-slots, symbols, etc. in the present disclosure may be replaced with one another.

For example, one subframe may also be referred to as TTI, a plurality of consecutive subframes may also be referred to as TTI, and one slot or one mini-slot may also be referred to as TTI. That is, at least one of the subframe and TTI may be a subframe (1ms) in the conventional LTE, may be a period shorter than 1ms (for example, 1 to 13 symbols), or may be a period longer than 1 ms. The unit indicating TTI may be referred to as a slot, a mini slot, or the like, instead of a subframe.

Here, the TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling for allocating radio resources (such as a frequency bandwidth and transmission power usable by each user terminal) to each user terminal in TTI units. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a channel-coded data packet (transport block), code block, code word, or the like, or may be a processing unit of scheduling, link adaptation, or the like. In addition, when a TTI is given, a time interval (e.g., the number of symbols) to which a transport block, a code block, a codeword, or the like is actually mapped may be shorter than the TTI.

When one slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. The number of slots (the number of mini-slots) constituting the minimum time unit of the schedule may be controlled.

The TTI having a time length of 1ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length exceeding 1ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length smaller than the long TTI and equal to or longer than 1 ms.

A Resource Block (RB) is a Resource allocation unit in the time domain and the frequency domain, and may include one or more continuous subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the parameter set, and may be 12, for example. The number of subcarriers included in the RB may also be decided based on the parameter set.

In addition, an RB may include one or more symbols in the time domain, and may have a length of one slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, and the like may be formed of one or more resource blocks.

In addition, one or more RBs may also be referred to as Physical Resource Blocks (PRBs), Sub-Carrier groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB peers, and so on.

In addition, a Resource block may also be composed of one or more Resource Elements (REs). For example, one RE may also be a radio resource region of one subcarrier and one symbol.

The Bandwidth Part (BWP: Bandwidth Part) (which may also be referred to as a partial Bandwidth) may also represent a subset of consecutive common RBs (common resource blocks) for a certain set of parameters in a certain carrier. Here, the common RB may also be determined by an index of an RB with reference to a common reference point of the carrier. PRBs may also be defined in a certain BWP and are numbered additionally within the BWP.

The BWP may include UL BWP (UL BWP) and DL BWP (DL BWP). For the UE, one or more BWPs may also be set within one carrier.

At least one of the set BWPs may be active, and the UE may not expect to transmit and receive a specific signal/channel other than the active BWP. In addition, "cell", "carrier", and the like in the present disclosure may also be interpreted as "BWP".

The above-described configurations of radio frames, subframes, slots, mini slots, symbols, and the like are merely examples. For example, the number of subframes included in the radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and other configurations can be variously changed.

The information, parameters, and the like described in the present disclosure may be expressed as absolute values, relative values to specific values, or other corresponding information. For example, the radio resource may also be indicated by a specific index.

In the present disclosure, the names used for the parameters and the like are not limitative names in all aspects. Further, the mathematical expressions and the like using these parameters may also be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), and the like) and information elements can be identified by any suitable names, and thus, various names assigned to these various channels and information elements are not limitative names in all aspects.

Information, signals, and the like 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, and the like that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

Information, signals, and the like can be output to at least one of a higher layer (upper layer) to a lower layer (lower layer) and a lower layer to a higher layer. Information, signals, and the like may be input and output via a plurality of network nodes.

The input/output information, signals, and the like may be stored in a specific location (for example, a memory) or may be managed by a management table. The input/output information, signals, and the like may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be transmitted to other devices.

The information notification is not limited to the embodiment and embodiment described in the present disclosure, and may be performed by other methods. For example, the notification of the Information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (e.g., RRC (Radio Resource Control) signaling), broadcast Information (Master Information Block, SIB (System Information Block), etc.), MAC (Medium access Control) signaling), other signals, or a combination thereof.

In addition, physical Layer signaling may also be referred to as L1/L2 (Layer 1/Layer 2)) control information (L1/L2 control signals), L1 control information (L1 control signals), and the like. The RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup (RRC Connection Setup) message, an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message, or the like. The MAC signaling may be notified using a MAC Control Element (MAC CE (Control Element)), for example.

Note that the notification of the specific information (for example, the notification of "X") is not limited to an explicit notification, and may be performed implicitly (for example, by not performing the notification of the specific information or by performing the notification of other information).

The decision may be made by a value (0 or 1) represented by one bit, by a true-false value (boolean) represented by true (true) or false (false), or by a comparison of values (e.g., with a specific value).

Software, whether referred to as software (software), firmware (firmware), middleware-ware (middle-ware), microcode (micro-code), hardware description language, or by other names, should be broadly construed to mean instructions, instruction sets, code (code), code segments (code segments), program code (program code), programs (program), subroutines (sub-program), software modules (software module), applications (application), software applications (software application), software packages (software packages), routines (routine), subroutines (sub-routine), objects (object), executables, threads of execution, processes, functions, or the like.

Software, instructions, information, and the like may also be transmitted or received via a transmission medium. For example, where the software is transmitted from a website, server, or other remote source (remote source) using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of transmission medium.

The terms "system" and "network" as used in this disclosure can be used interchangeably. "network" may also mean a device (e.g., a base station) included in a network.

In the present disclosure, terms such as "precoding", "precoder", "weight", "Quasi-Co-Location", "TCI state (transmission configuration Indication state)", "spatial relationship", "spatial filter", "transmission power", "phase rotation", "antenna port group", "layer", "rank", "resource set", "resource group", "beam width", "beam angle", "antenna element", "panel", and the like can be used interchangeably.

In the present disclosure, terms such as "Base Station (BS)", "wireless Base Station", "fixed Station", "NodeB", "enodeb (enb)", "gnnodeb (gnb)", "access point (access point)", "Transmission Point (TP)", "Reception Point (RP)", "transmission point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where a base station is referred to by terms such as macrocell, smallcell, femtocell, picocell, and the like.

The base station can accommodate one or more (e.g., three) cells. In the case where a base station accommodates a plurality of cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each smaller area can also be provided with a communication service by a base station subsystem (e.g., an indoor small base station (RRH) Remote Radio Head) — the term "cell" or "sector" refers to a part or the entire coverage area of at least one of the base station and the base station subsystem that performs a communication service within the coverage area.

In the present disclosure, terms such as "Mobile Station (MS)", "User terminal (User terminal)", "User Equipment (UE)", "terminal" and the like can be used interchangeably.

In some instances, a mobile station is also referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset (hand set), user agent, mobile client, or some other suitable terminology.

At least one of the base station and the mobile station may also be referred to as a transmitting apparatus, a receiving apparatus, a wireless communication apparatus, or the like. At least one of the base station and the mobile station may be a device mounted on a mobile body, a mobile body main body, or the like. The mobile body may be a vehicle (e.g., a vehicle, an airplane, etc.), may be a mobile body that moves in an unmanned manner (e.g., a drone (a drone), an autonomous vehicle, etc.), or may be a robot (manned or unmanned). At least one of the base station and the mobile station further includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

In addition, the base station in the present disclosure may also be interpreted as a user terminal. For example, the various aspects/embodiments of the present disclosure may also be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (e.g., which may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-event), etc.). In this case, the user terminal 20 may have the functions of the base station 10 described above. The expressions such as "uplink" and "downlink" can also be interpreted as expressions (for example, "side") corresponding to communication between terminals. For example, an uplink channel, a downlink channel, and the like may also be interpreted as a side channel.

Likewise, a user terminal in the present disclosure may also be interpreted as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

In the present disclosure, the operation performed by the base station is sometimes performed by an upper node (upper node) of the base station, depending on the case. Obviously, in a network including one or more network nodes (network nodes) having a base station, various actions performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (for example, considering, but not limited to, an MME (Mobility Management Entity), an S-GW (Serving-Gateway), and the like), or a combination thereof.

The embodiments and modes described in the present disclosure may be used alone, may be used in combination, or may be switched to use with execution. Note that, in the embodiments and the embodiments described in the present disclosure, the order of the processes, sequences, flowcharts, and the like may be changed as long as they are not contradictory. For example, elements of various steps are presented in an exemplary order for a method described in the present disclosure, but the present invention is not limited to the specific order presented.

The aspects/embodiments described in the present disclosure may also 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), New Radio Access Technology (New-RAT), NR (New Radio), NX (New Radio Access), FX (Future Radio Access), CDMA (Global System for Mobile communication (GSM) 2000), and CDMA (Global System for Mobile communication (GSM) 2000) UMB (Ultra Mobile Broadband), IEEE 802.11(Wi-Fi (registered trademark)), IEEE802.16(WiMAX (registered trademark)), IEEE 802.20 (Ultra-WideBand), Bluetooth (registered trademark), a system using another appropriate wireless communication method, a next-generation system expanded based on these, and the like. Furthermore, multiple systems may also be applied in combination (e.g., LTE or LTE-a, combination with 5G, etc.).

The term "based on" used in the present disclosure does not mean "based only" unless otherwise specified. In other words, the expression "based on" means both "based only on" and "based at least on".

Any reference to the use of the terms "first," "second," etc. in this disclosure does not fully define the amount or order of such elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to first and second elements does not imply that only two elements may be used or that the first element must somehow override the second element.

The term "determining" as used in this disclosure encompasses a wide variety of actions in some cases. For example, "determination (decision)" may be regarded as a case where "determination (decision)" is performed on determination (rounding), calculation (calculating), processing (processing), derivation (deriving), investigation (investigating), search (looking up), search, inquiry (query)) (for example, search in a table, a database, or another data structure), confirmation (authenticating), and the like.

The "determination (decision)" may be regarded as a case of "determining (deciding)" on reception (e.g., reception information), transmission (e.g., transmission information), input (input), output (output), access (e.g., access to data in a memory), and the like.

The "determination (decision)" may be also regarded as a case of performing "determination (decision)" on solution (resolving), selection (selecting), selection (breathing), establishment (evaluating), comparison (comparing), and the like. That is, "judgment (decision)" may also be regarded as a case where "judgment (decision)" is performed on some actions.

The term "determination (decision)" may be interpreted as "assumption", "expectation", "consideration", and the like.

The "maximum transmission power" in the present disclosure may refer to a maximum value of transmission power, a nominal maximum transmission power (the nominal UE maximum transmission power), or a nominal maximum transmission power (the rated UE maximum transmission power).

The terms "connected" and "coupled" or any variation thereof used in the present disclosure mean all connections or couplings between two or more elements directly or indirectly, and can include a case where one or more intermediate elements exist between two elements "connected" or "coupled" to each other. The combination or connection between the elements may be physical, logical, or a combination of these. For example, "connection" may also be interpreted as "access".

In the present disclosure, where two elements are connected, it can be considered to be "connected" or "joined" to each other using more than one wire, cable, printed electrical connection, etc., and using electromagnetic energy having a wavelength in the radio frequency domain, the microwave region, the optical (both visible and invisible) region, etc., as several non-limiting and non-inclusive examples.

In the present disclosure, the term "a is different from B" may mean "a and B are different from each other". In addition, the term may also mean "a and B are different from C, respectively". The terms "separate", "associated", and the like may likewise be construed as "different".

In the present disclosure, when the terms "including", and "variations thereof are used, these terms are intended to have inclusive meanings as in the term" comprising ". Further, the term "or" used in the present disclosure does not mean exclusive or.

In the present disclosure, for example, in the case where articles are added by translation as in a, an, and the in english, the present disclosure may also include the case where nouns following these articles are plural.

Although the invention according to the present disclosure has been described in detail above, it will be apparent 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 as modifications and variations without departing from the spirit and scope of the invention defined by the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not have any limiting meaning to the invention to which the present disclosure relates.