CN117581484A

CN117581484A - Terminal, wireless communication method and base station

Info

Publication number: CN117581484A
Application number: CN202180099746.0A
Authority: CN
Inventors: 芝池尚哉; 松村祐辉; 越后春阳; 永田聪
Original assignee: NTT Docomo Inc
Current assignee: NTT Docomo Inc
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2024-02-20
Also published as: WO2022269919A1

Abstract

The terminal according to one aspect of the present disclosure includes: a control unit that controls the application of different power ratios to the plurality of layers; and a transmitting unit that applies the different power ratios to transmit at least one of the uplink control channel and the random access channel of the plurality of layers. According to an aspect of the present disclosure, power control of each layer/port can be suitably implemented.

Description

Terminal, wireless communication method and base station

Technical Field

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

Background

In a universal mobile telecommunications system (Universal Mobile Telecommunications System (UMTS)) network, long term evolution (Long Term Evolution (LTE)) is standardized for the purpose of further high-speed data rates, low latency, and the like (non-patent document 1). Further, for the purpose of further large capacity, high altitude, and the like of LTE (third generation partnership project (Third Generation Partnership Project (3 GPP)) Release (rel.)) versions 8 and 9, LTE-Advanced (3 GPP rel.10-14) has been standardized.

Subsequent systems of LTE (e.g., also referred to as fifth generation mobile communication system (5 th generation mobile communication system (5G)), 5g+ (plus), sixth generation mobile communication system (6 th generation mobile communication system (6G)), new Radio (NR)), 3gpp rel.15 later, and the like are also being studied.

Prior art literature

Non-patent literature

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

Disclosure of Invention

Problems to be solved by the invention

In rel.15/16NR, transmission and reception of channels and signals using a plurality of antenna ports are controlled so that power is equal between the antenna ports and power is equal between layers.

However, in a wireless communication system (6G, etc.) in the future, it is demanded to realize higher-speed communication in a multiple-input multiple-output (Multi Input Multi Output (MIMO)) environment. However, research has not been advanced on how to achieve high-speed communication. If this is not clear, there is a concern that the communication quality may deteriorate.

It is therefore an object of the present disclosure to provide a terminal, a wireless communication method, and a base station capable of appropriately implementing power control of each layer/port.

Means for solving the problems

The terminal according to one aspect of the present disclosure includes: a control unit that controls the application of different power ratios to the plurality of layers; and a transmitting unit that applies the different power ratios to transmit at least one of the uplink control channel and the random access channel of the plurality of layers.

Effects of the invention

According to an aspect of the present disclosure, power control of each layer/port can be suitably implemented.

Drawings

Fig. 1A and 1B are diagrams showing an example of TPMI notification for a UE performing transmission for a 2 antenna port in which transform precoding is not effective and a maximum rank=2 is set.

Fig. 2 is a diagram showing an example of correspondence between TPMI indexes and precoding matrix W.

Fig. 3 is a diagram illustrating an example of mapping between CW and layer according to the first embodiment.

Fig. 4 is a diagram showing another example of mapping of CW and layer according to the first embodiment.

Fig. 5 is a diagram showing another example of mapping between CW and layer according to the first embodiment.

Fig. 6 is a diagram showing an example of the map according to embodiment 2-1.

Fig. 7 is a diagram showing an example of the set power distribution ratio.

Fig. 8 is a diagram showing an example of the map according to embodiment 2-2.

Fig. 9 is a diagram showing an example of the map according to embodiment 4-1.

Fig. 10 is a diagram showing an example of the map according to embodiment 4-2.

Fig. 11 is a diagram showing an example of information related to power allocation according to embodiment 5-2.

Fig. 12A and 12B are diagrams showing an example of a method for changing the power ratio according to embodiment 5-3.

Fig. 13A and 13B are diagrams showing an example of correspondence between DCI code points and power ratios according to embodiments 5 to 5.

Fig. 14 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment.

Fig. 15 is a diagram showing an example of the configuration of a base station according to an embodiment.

Fig. 16 is a diagram showing an example of a configuration of a user terminal according to an embodiment.

Fig. 17 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment.

Detailed Description

(PUSCH precoder)

In NR, a User terminal (User terminal), a User Equipment (UE)) may support at least one of Codebook (CB) -based transmission and Non-Codebook (NCB) -based transmission.

For example, the UE may determine a precoder (precoding matrix) for transmitting an uplink shared channel (physical uplink shared channel (Physical Uplink Shared Channel (PUSCH)) based on at least one of CB and NCB using at least a sounding reference signal (Sounding Reference Signal (SRS)) resource index (SRS Resource Index (SRI).

The UE may also receive information (SRS setting information, e.g., parameters in "SRS-Config" of the RRC control element) used for transmission of the measurement reference signal (e.g., sounding reference signal (Sounding Reference Signal (SRS)).

Specifically, the UE may also receive at least one of information related to one or more SRS Resource sets (SRS Resource set information, e.g., "SRS-Resource" of the RRC control element) and information related to one or more SRS resources (SRS Resource information, e.g., "SRS-Resource" of the RRC control element).

One SRS resource set may also be associated with (or may group) a specific number of SRS resources. Each SRS resource may also be determined by an SRS resource Identifier (SRS resource indicator (SRS Resource Indicator (SRI)) or an SRS resource ID (Identifier).

The SRS resource set information may include information of an SRS resource set ID (SRS-resource ID), a list of SRS resource IDs (SRS-resource IDs) used in the resource set, an SRS resource type, and an SRS use (use).

The "SRS-SetUse" of the use (RRC parameter "user", L1 (Layer-1)) parameter may be, for example, beam management (beam management), codebook (CB), non-codebook (noncodebook (NCB)), antenna switching, or the like. The SRS for codebook or non-codebook use may also be used in the decision of a precoder for the SRI-based codebook or non-codebook-based uplink shared channel (physical uplink shared channel (Physical Uplink Shared Channel (PUSCH))) transmission.

In the case of CB based transmission, the UE may determine a precoder for PUSCH transmission based on SRI, transmission rank indicator (Transmitted Rank Indicator (TRI)), transmission precoding matrix indicator (Transmitted Precoding Matrix Indicator (TPMI)), and the like. In the case of NCB-based transmission, the UE may also decide a precoder for PUSCH transmission based on SRI.

SRI, TRI, TPMI, etc. may also be notified to the UE using downlink control information (Downlink Control Information (DCI)). The SRI may be specified by either an SRS resource indicator field (SRS Resource Indicator field (SRI field)) of the DCI or a parameter "SRS-resource indicator" included in an RRC information element "configurator grantconfig" of a configuration grant (setting grant) PUSCH (configured grant PUSCH).

TRI and TPMI may also be specified by the precoding information of DCI and a layer number field ("Precoding information and number of layers" field). For simplicity, the "precoding information and layer number field" will hereinafter be also simply referred to as "precoding field".

In addition, the maximum number of layers (maximum rank) of UL transmission may also be set to the UE by the RRC parameter "maxRank".

The UE may also report UE capability information (UE capability information) related to the precoder type and set the precoder type based on the UE capability information through higher layer signaling from the base station. The UE capability information may also be information of a precoder type used by the UE in PUSCH transmission (also referred to as RRC parameter "PUSCH-transmission").

In the present disclosure, the higher layer signaling may be, for example, any one of radio resource control (Radio Resource Control (RRC)) signaling, medium access control (Medium Access Control (MAC)) signaling, broadcast information, or the like, or a combination thereof.

MAC signaling may also use, for example, MAC control elements (MAC Control Element (MAC CE)), MAC protocol data units (MAC Protocol Data Unit (PDU)), and the like. The broadcast information may be, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), or the like.

The UE may determine the precoder to be used for PUSCH transmission based on information (also referred to as RRC parameter "codebook subset") of the precoder type included in PUSCH setting information (PUSCH-Config information element of RRC signaling) notified by higher layer signaling. The UE may also be set with a subset of the codebook specified by TPMI through a codebook subset.

The precoder type may be indicated by any one of complete coherence (full coherence), complete coherence (coherence), partial coherence (partial coherence) and incoherent (non-coherence) or a combination of at least two of them (for example, parameters such as "complete and partial and incoherent (full partial coherence)", "partial and incoherent (partial coherence)") may be used.

Complete coherence may also mean that synchronization of all antenna ports used in transmission has been achieved (which may also be expressed as being able to make the phases uniform, the precoder applied the same, etc.). Partial coherence may also mean that although synchronization has been achieved between ports of a portion of the antenna ports used in transmission, the port of the portion is not synchronized with other ports. Incoherence may also mean that synchronization of the antenna ports used in the transmission is not achieved.

In addition, it is also conceivable that UEs supporting completely coherent precoder types support partially coherent as well as incoherent precoder types. It is also conceivable to support non-coherent precoder types for UEs supporting partially coherent precoder types.

The precoder type may also be replaced with coherence (coherence), PUSCH transmission coherence, coherence (coherence) type, codebook subset type, etc.

The UE may determine a precoding matrix corresponding to a TPMI index obtained from DCI (e.g., DCI format 0_1. Hereinafter, the same) transmitted from the scheduled UL based on a plurality of precoders (may also be referred to as a precoding matrix, codebook, etc.) used for CB based transmission.

Specifically, in rel.15/16NR, when non-codebook based transmission is used for PUSCH, UE may be set to use a set of SRS resources having a maximum of four SRS resources as a non-codebook SRS resource by RRC, and may be instructed to one or more SRS resources of the maximum of four SRS resources by DCI (2-bit SRI field).

The UE may determine the number of layers (transmission rank) for PUSCH based on the SRI field. For example, the UE may determine that the number of SRS resources specified in the SRI field is the same as the number of layers used for PUSCH. The UE may calculate the precoder for the SRS resource.

When CSI-RS (which may also be referred to as associated CSI-RS) associated with the SRS resource (or the SRS resource set to which the SRS resource belongs) are set by a higher layer, a PUSCH transmission beam may be calculated based on (measurements of) the set associated CSI-RS. If not, the PUSCH transmission beam may be specified by the SRI.

In addition, the UE may also be set to use a PUSCH transmission based on a codebook or a PUSCH transmission based on a non-codebook by a higher layer parameter "txConfig" indicating a transmission scheme (scheme). The parameter may also represent a value of "codebook" or "non-codebook".

In the present disclosure, the codebook-based PUSCH (codebook-based PUSCH transmission, codebook-based transmission) may also mean PUSCH in the case where "codebook" is set in the UE as a transmission scheme. In the present disclosure, a non-codebook-based PUSCH (non-codebook-based PUSCH transmission, non-codebook-based transmission) may also mean a PUSCH in the case where "non-codebook" is set in the UE as a transmission scheme.

In addition, the transform precoding (transform precoding) being effective may also mean that discrete fourier transform spread OFDM (Discrete Fourier Transform spread OFDM (DFT-s-OFDM)) is used, and the transform precoding being ineffective may also mean that CP-OFDM is used.

In this example, a relation (table) between a precoding field of DCI in rel.15nr (indicated as "bit field mapped to index" in the figure and the same in the similar figures later) and TPMI (TPMI index) is shown, in addition, "codebook subset=fullyand partialand parameter" described in fig. 1A indicates a table referred to by a completely coherent UE, and "codebook subset=non parameter" described in fig. 1B indicates a table referred to by a non-coherent UE.

The UE decides the number of layers to be applied in transmission and TPMI for the precoding matrix based on the value of the precoding field included in the DCI and the table of fig. 1A/1B. For example, the fully coherent UE assigned precoding field=2 decides to use layer number=2 and tpmi=0 in PUSCH transmission based on fig. 1A. In addition, "reserved" corresponds to a value defined in the predetermined future.

Fig. 2 is a diagram showing an example of correspondence between TPMI indexes and precoding matrix W. Fig. 2 shows a precoding matrix W for 2-layer transmission using 2-antenna ports that are transform precoded to be invalid.

A UE following fig. 1A decides to use the layer number=2 and tpmi=0 in PUSCH transmission and applies W corresponding to tpmi=0 of fig. 2 in PUSCH transmission.

The UE may calculate a block Z of a vector of complex symbols for each antenna port mapped to a resource (e.g., resource element) based on W and a block Y of a vector of complex symbols for each layer after transform precoding (or layer mapping). For example, z=wy may be obtained.

In the conventional specification of rel.15/16NR, W is specified by TPMI indicated by a precoding field as described above in regard to codebook-based transmission, and W is specified as an identity matrix in regard to non-codebook-based transmission.

For W of fig. 2, layer 1 (column vector of first column) and layer 2 (column vector of second column) are respectively the same power. For example, for tpmi=0, the sum of squares of the components of the column vector of layer 1 and the sum of squares of the components of the column vector of layer 2 are respectivelyThe power ratio between layer 1 and layer 2 was 1:1.

As described above, in the conventional rel.15/16NR, transmission of channels and signals using a plurality of antenna ports is controlled so that equal power is applied between the antenna ports and equal power and the same modulation and coding scheme (Modulation and coding scheme (MCS)) is applied between layers.

The same control is applied not only to uplink transmission (e.g., PUSCH) but also to downlink transmission (e.g., physical downlink shared channel (Physical Downlink Shared Channel (PDSCH))).

Thus, in the existing rel.15/16NR, the power setting is determined for each beam indicated by the SRI. When a beam is transmitted using a plurality of ports (streams), the power of each of the plurality of ports is equally allocated. Even when precoding (e.g., layer-port mapping) is applied, no power (amplitude) differences are generated between ports.

However, in a wireless communication system (6G, etc.) in the future, it is demanded to realize higher-speed communication in a multiple-input multiple-output (Multi Input Multi Output (MIMO)) environment.

More specifically, improvement of Uplink (UL) facing communication capacity is under study to extend spatial multiplexing capacity by extending MIMO rank number. This makes it possible to multiplex a plurality of more transmissions in the spatial direction and perform simultaneous transmission.

In future wireless communication systems, it is considered to maximize channel capacity by performing power allocation among ports in order of channel singular values from large to small by using precoding based on singular value decomposition (Singular Value Decomposition (SVD)), special mode transmission (E-SDM (special beam space division multiplexing (Eugenbeam Space Division Multiplexing))), water injection theorem, and the like.

Singular value decomposition of the channel matrix H may also be by combining V _L U and U _L Set as an orthogonal matrix and decomposed into h=v _L ΣU _L ^H . In this case, Σ may be a diagonal matrix. U (U) _L ^H U may also be _L The matrix (accompanying matrix) after hermitian transpose (Hermitian transpose) was performed.

The special mode transmission can also be realized by using U respectively _L V (V) _L ^H As the transmission weight and the reception weight, a channel is regarded as a plurality of independent communication paths (i.e., of rank number).

The water-filling theorem may also represent the power allocation method for each stream to achieve the maximization of channel capacity at the time of E-SDM. The optimal power allocation for each stream i can also be expressed by the following mathematical expression.

[ 1]

(1)

Wherein a is satisfied->Is a constant of a noise value (e.g., σ ² Is the average noise power

In addition, in (formula 1), coefficients of the respective parameters may be different.

However, research has not been advanced on how to perform power allocation for each MIMO layer in the case of performing extension of MIMO rank numbers. More specifically, the power distribution ratio between ports (flows) affects the channel capacity (communication path capacity) that can be achieved by the transmission beam, but no study has been made regarding optimization of the power distribution ratio in rel.15/16 NR. If this is not clear, there is a concern that an increase in communication throughput is suppressed.

Accordingly, the inventors of the present invention have conceived a method for appropriately performing power allocation between layers/ports. More specifically, a method of making the power allocation between layers/ports variable in transmission of channels/signals using spatial multiplexing in MIMO is conceivable.

Embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. The radio communication methods according to the embodiments may be applied individually or in combination.

In addition, in the present disclosure, "a/B" may also mean "at least one of a and B". Furthermore, in the present disclosure, "a/B/C" may also mean "A, B and at least one of C".

MAC signaling may also use, for example, MAC control elements (MAC Control Element (MACCE)), MAC protocol data units (MAC Protocol Data Unit (PDU)), and so on. The broadcast information may be, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), minimum system information (remaining minimum system information (Remaining Minimum System Information (RMSI))), other system information (Other System Information (OSI)), or the like.

The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI))).

In the present disclosure, activation, deactivation, indication, selection, setting, update, decision, and the like may be replaced with each other.

In the present disclosure, a panel, a beam, a panel group, a beam group, an Uplink (UL)) transmitting entity, TRP, spatial Relationship Information (SRI), spatial relationship, a control resource set (COntrol REsource SET (CORESET)), a physical downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a Codeword (CW), a Transport Block (TB), a base station, a specific antenna port (e.g., demodulation reference signal (DeModulation Reference Signal (DMRS)) port), a specific antenna port group (e.g., DMRS port group), a specific group (e.g., code division multiplexing (Code Division Multiplexing (CDM)) group, a specific reference signal group, CORESET group), specific resources (e.g., specific reference signal resources), a specific resource set (e.g., specific reference signal resource set), CORESET pool, PUCCH group (PUCCH resource group), spatial relationship group, downlink transmission setting indication state (Transmission Configuration Indication state (TCI state)), uplink TCI state (UL TCI state), uniform TCI state (unified TCI state), QCL, and the like may also be replaced with each other.

Furthermore, the spatial relationship information identifier (Identifier (ID)) (TCI state ID) and the spatial relationship information (TCI state) may be replaced with each other. "spatial relationship information" may also be interchangeable with "a set of spatial relationship information", "one or more spatial relationship information", etc. The TCI state and TCI may also be interchanged.

In this disclosure, the index, ID, indicator, resource ID may also be replaced with each other. Further, in the present disclosure, sequences, lists, sets, groups, clusters, subsets, etc. may also be replaced with each other.

In the following description of the embodiments, "spatial relationship information (Spatial Relation Information (SRI))", "spatial relationship information for PUSCH", "spatial relationship", "UL beam", "transmission beam of UE", "UL TCI state", "spatial relationship of UL TCI state", SRS resource indicator (SRS Resource Indicator (SRI)), SRS resource, precoder, and the like may also be replaced with each other.

In the present disclosure, layers, ports (antenna ports), SRS ports, DMRS ports, streams, etc. may also be replaced with each other. For example, the power ratio between the layers may be replaced with the power ratio between the ports.

The layer may be replaced with one or more groups of layers (layer groups), one or more groups of ports (port groups), or the like. For example, it is also possible to treat layers 1 and 2 as belonging to layer group 1 and layer 3 as belonging to layer group 2.

In addition, "layer i" (i is an integer) of the present disclosure may be replaced with layer i-1, layer i+1, or other layer numbers (i.e., may be replaced with any layer number).

In the present disclosure, channels and signals may also be interchanged. Further, in the present disclosure, channel/signal being spatially multiplexed may also mean that channel/signal is transmitted in the same time resource and frequency resource, channel/signal is transmitted using different layers in the same time resource and frequency resource, and so on.

The "PUSCH" of the following embodiments may also be replaced with other UL channel/UL signals (e.g., PUCCH, DMRS, SRS).

The "PDSCH" of the following embodiments may also be replaced with other DL channels/DL signals (e.g., PDCCH, DMRS, CSI-RS).

The "power" in the following embodiments may be replaced with transmission power, and may mean PUSCH transmission power, PDSCH transmission power, or the like. Further, in the present disclosure, the power may also be replaced with at least one of an absolute value of a precoding vector/matrix, a sum of squares of all elements of a specific column (or row) of the vector/matrix, a sum of squares of all elements of the vector/matrix, and the like.

(Wireless communication method)

< first embodiment >, first embodiment

The correspondence (mapping) between TBs and layers may also be specified/set. The mapping between TBs and layers may also be referred to as TB-to-inter-layer mapping. In various embodiments of the present disclosure, TB, CW may also be interchanged. In addition, layers, ports, groups of layers, groups of ports, etc. may also be interchanged.

The map may also be classified into a plurality of maps (or map types). In the following description, the map 1 and the map 2 are exemplified, but are not limited thereto.

It is also possible that a specific layer (e.g., a layer of 1 to N (N is an integer of 1 or more)) is mapped to the first TB, and a layer other than the specific layer (e.g., a layer/port of n+1 or more) is mapped to the second TB (mapping 1). In other words, a specific layer (for example, a layer of 1 to N) may correspond to the first TB, and a layer other than the specific layer (for example, a layer of n+1 or more) may correspond to the second TB.

It is also possible that a maximum of N layers are mapped to one TB (mapping 2). In other words, one TB may also correspond to a maximum of N layers.

The number of layers that can be mapped between different TBs may also be independently decided based on specific conditions.

The specific condition may be a condition based on (the maximum value of) the number of layers that can be multiplexed for each transmission opportunity.

The specific condition may be a condition based on the size (payload/bit number) of the TB/CW. For example, when four maximum layers can be multiplexed and two CWs (for example, cw#a and cw#b) can be multiplexed, if |size (cw#a) -size (cw#b) |Σx (X is a specific value) and size (cw#a) -size (cw#b) > 0 is satisfied, then cw#a may be mapped to 3 layers and cw#b may be mapped to 1 layer, respectively.

Further, consider the TB-to-interlayer mapping described below as an example:

one TB corresponds to N layers, totaling N layers (only one TB is transmitted).

One TB corresponds to N layers, totaling m×n layers (M TBs are (multiplexed) transmitted, each TB employing spatial diversity among the N layers).

One TB corresponds to one layer, and M layers are added up (M TBs are (multiplexed) transmitted, each TB does not employ spatial diversity).

Fig. 3 is a diagram illustrating an example of mapping between CW and layer according to the first embodiment. In the example shown in fig. 3, four CWs are transmitted using four layers, one for each layer.

Fig. 4 is a diagram showing another example of mapping of CW and layer according to the first embodiment. In the example shown in fig. 4, two CWs are transmitted using four layers, one for each of the two layers.

Fig. 5 is a diagram showing another example of mapping between CW and layer according to the first embodiment. In the example shown in fig. 5, two CWs are transmitted using four layers, codeword #0 for one layer (layer # 0) and codeword #1 for three layers (layers #1 to # 3).

The UE may also determine the TB-to-interlayer mapping based on certain conditions.

The specific condition may be at least one of:

Size of TB.

Received power (e.g., RSRP)/received quality (e.g., RSRQ/SINR) of DL/UL RS transmitted per layer.

Parameters indicating the importance (priority) of TB.

For example, the UE may also determine that a relatively large TB of the plurality of TBs corresponds to a relatively large number of layers. Further, for example, the UE may determine that a relatively high priority TB among the plurality of TBs corresponds to a relatively large number of layers.

The UE may also report information related to the determined/decided TB-to-interlayer mapping to a network (NW, e.g., a base station). The feedback may also be done periodically, or upon notification/triggering from the NW.

Thus, for example, the TB-to-layer mapping based on the relationship between the power ratio and the layer is made variable by making the order (order) of the power ratios in the layers coincide with the order of the layer numbers or the like, and flexible control of the power ratio according to the characteristics of the TB can be performed while suppressing an increase in notification overhead.

In addition, the UE may also be set/indicated/informed of the TB-to-interlayer mapping from the NW. The setting/indicating/informing may also be performed by at least one of higher layer signaling and physical layer signaling.

For example, the UE may also be notified/indicated the number of layers per TB using DCI.

For example, in the case where a plurality of TBs (e.g., PUSCHs) transmitted using different layers are scheduled/activated through one DCI, information on the number of layers of each TB may also be included in the one DCI.

For example, when a plurality of TBs (e.g., PUSCHs) transmitted using different layers are scheduled and activated by different DCIs, information on the number of layers per TB may be included in the respective DCIs or may be included in a specific DCI. The specific DCI may be at least one of a last (latest) received DCI of the UE, a last (latest) transmitted DCI in a time direction, and a last (latest) DCI of a monitoring occasion (occalasion).

Further, for example, the UE may set a plurality of information (candidates) related to the TB-to-interlayer mapping using RRC signaling/MAC CE, and may be instructed to map from the plurality of information using DCI.

According to the above first embodiment, the spatial diversity effect and the spatial multiplexing effect by MIMO can be appropriately utilized according to the multiplexed TB/CW.

< second embodiment >

The second embodiment relates to power control based on the size of the transport block (Transport Block Size (TBS)).

In the second embodiment, the power allocation of the transmission channel/signal may be changed based on the TBS of the multiplexed transmission channel/signal. The UE may also determine the power allocation of the multiplexed transmit channel/signal based on the TBS of the transmit channel/signal.

Embodiment mode 2-1

In embodiment 2-1, the power allocation to a plurality of transmission channels/signals (e.g., PUSCH) of different TBs may be controlled based on the TBs ratio between the plurality of transmission channels/signals.

For example, when X (e.g., x=4) PUSCHs of different TBSs are spatially multiplexed, the UE may determine the power allocation ratio for the PUSCH based on the ratio of TBSs among the four PUSCHs.

In embodiment 2-1, the power allocation may be determined by following steps 1 to 3 described below. In the following, four PUSCHs (PUSCH #0 to # 3) are described as an example, but the number of PUSCHs is not limited thereto, and the channel/signal to be transmitted may be any channel/signal.

TBSs (TBSs #0 to # 3) of each of the four PUSCHs (PUSCH #0 to # 3) spatially multiplexed are determined/calculated (step 1).

Each PUSCH is mapped to a layer (step 2). In fig. 6, the case of mapping PUSCH #0 to #3 to layers #0 to #3, respectively, is shown.

Determining power P in each port based on TBS ratio at the time of layer-to-port association (mapping) _i (step 3). In fig. 6, the transmission powers of PUSCH #0 to #3 are shown as P, respectively ₀ To P ₃ Is the case in (a).

The power P corresponding to the port i (i=0 to 3 here) in the above step 3 _i The present invention can be also calculated by the following expression.

[ 2]

(2)

Gamma is the total layer/port number, P _Total Is the total power available

Here, P _Total The transmission power may be determined by open loop power control/closed loop power control.

Further, at the time of layer-to-port association (mapping), power P in each port is targeted _i The power of the TBS-based ratio may also be set using higher layer signaling (step 3').

In case of applying the above-described mapping 1 (mapping 1 is envisaged), the UE may also follow the above-described steps 1 to 3 (3') to control the power allocation.

In the case where the above-described mapping 2 (mapping 2 is assumed), the UE may determine that the layer/port corresponding to the same TB/CW is one layer/port group.

In this case, the method for determining the power distribution ratio described in embodiment 2-1 can be applied to the determination of the power ratio between the group of layers and the port group. The power ratio between the multiple layers/ports within a group may be either aliquoting or non-aliquoting. The UE may determine the power ratio (value) of the equal division/unequal division based on CSI information of each layer/port in one group, for example.

According to embodiment 2-1, the signaling of the power ratio can be appropriately omitted, and the signaling overhead for the UE can be reduced.

Embodiment mode 2-2

In embodiment 2-2, power allocation to a plurality of transmission channels/signals (e.g., PUSCH) may be controlled based on a power allocation ratio set (configured/pre-configured) and a TBs of each of the plurality of transmission channels/signals allocated to different TBs.

For example, when X (e.g., x=4) PUSCHs of different TBSs are spatially multiplexed, the UE may determine the power allocation ratio for the PUSCH based on information on the power allocation ratio set in advance and the sizes of the TBSs allocated to the four PUSCHs.

In embodiment 2-2, the power allocation may be determined by following steps 1 and 2 described below. In the following, four PUSCHs (PUSCH #0 to # 3) are described as an example, but the number of PUSCHs is not limited thereto, and the channel/signal to be transmitted may be any channel/signal.

The TBSs (tbss#0 to # 3) of each of the four PUSCHs (pusch#0 to # 3) spatially multiplexed are determined/calculated, and the four PUSCHs are ordered (ordering/re-ordering) (step 1).

The PUSCH and port mapping is performed so that the TBS-based power allocation ratio is set (step 2).

Fig. 7 is a diagram showing an example of the set power distribution ratio. As shown in fig. 7, the power ratio corresponding to each port (ports #0 to # 3) is set to the UE in advance. In the present disclosure, information related to the power allocation ratio may also be set/notified to the UE using higher layer signaling (e.g., RRC signaling/MAC CE).

In step 1 described above, the UE orders the TBSs of the four PUSCHs in order from large to small (or from small to large) (for example, orders pusch#2, pusch#1, pusch#3, pusch#0 in order from large to small).

In step 2 described above, the UE performs PUSCH-port mapping such that a higher power allocation ratio is set for the large (or small) PUSCH of the TBS. In this case, the UE may determine that pusch#0 corresponds to port#3, pusch#1 corresponds to port#1, pusch#2 corresponds to port#0, and pusch#3 corresponds to port#2 (see fig. 8).

In addition, in case of applying the above-described map 1 (map 1 is envisaged), the UE may also control the power allocation following the above-described steps 1 and 2.

In this case, the method for determining the power distribution ratio described in embodiment 2-2 can be applied to the determination of the power ratio between the group of layers and the port group. The power ratio between the multiple layers/ports within a group may be either aliquoting or non-aliquoting. The UE may determine the power ratio (value) of the equal division/unequal division based on CSI information of each layer/port in one group, for example.

According to embodiment 2-2, the power ratio can be controlled more flexibly.

According to the above second embodiment, by performing TBS-based power allocation control, optimal coverage compensation can be achieved.

< third embodiment >

The third embodiment relates to power control based on the payload size of an uplink shared channel (e.g., UL-SCH/PUSCH).

In the third embodiment, the power allocation of the uplink shared channel may be determined based on the payload size of the uplink shared channel.

The payload size of the uplink shared channel may also be the payload size of a MAC-PDU set/notified from a higher layer. The UE may also determine the power allocation of the uplink shared channel based on the payload size of the MAC-PDU set/notified from the higher layer.

Embodiment 3-1

In embodiment 3-1, the power allocation to a plurality of transmission channels/signals (e.g., PUSCH) may be controlled based on the ratio of payloads between the plurality of transmission channels/signals.

For example, when X (e.g., x=4) PUSCHs of different TBSs are spatially multiplexed, the UE may determine the power allocation ratio for the PUSCH based on the ratio of payloads among the four PUSCHs.

In embodiment 3-1, the power allocation may be determined by following steps 1 to 3 described below. Hereinafter, four PUSCHs (PUSCH #0 to # 3) are described as an example, but the number of PUSCHs is not limited thereto.

Payloads (payloads #0 to # 3) of respective four PUSCHs (PUSCH #0 to # 3) spatially multiplexed are decided/calculated (step 1).

Each PUSCH is mapped to a layer (step 2).

Determining power P in each port based on the ratio of payloads at the time of layer to port association (mapping) _i (step 3).

Power P in step 3 above _i The present invention can be also calculated by the following expression.

[ 3]

(3)

Gamma is the total layer/port number, P _Total Is the total power available

The payload size (payload) may be, for example, the number of bits (also denoted as a) in one transport block transmitted (distributed) in layer 1 (or the total number of bits of a bit string of the transport block).

Further, at the time of layer-to-port association (mapping), power P in each port is targeted _i The power of the payload-based ratio may also be set using higher layer signaling (step 3').

In addition, in case of applying the above-described map 1 (map 1 is envisaged), the UE may also control the power allocation following the above-described steps 1 to 3 (3').

In this case, the method for determining the power distribution ratio described in embodiment 3-1 can be applied to the determination of the power ratio between the group of layers and the port group. The power ratio between the multiple layers/ports within a group may be either aliquoting or non-aliquoting. The UE may determine the power ratio (value) of the equal division/unequal division based on CSI information of each layer/port in one group, for example.

According to embodiment 3-1, the signaling of the power ratio can be appropriately omitted, and the signaling overhead for the UE can be reduced.

Embodiment 3-2

In embodiment 3-2, power allocation to a plurality of transmission channels/signals (e.g., PUSCH) may be controlled based on a power allocation ratio set (configured/pre-configured) and a payload allocated to each of the plurality of transmission channels/signals.

For example, when X (e.g., x=4) PUSCHs of different TBSs are spatially multiplexed, the UE may determine the power allocation ratio for the PUSCH based on information on the power allocation ratio set in advance and the sizes of payloads allocated to the four PUSCHs.

In embodiment 3-2, the power allocation may be determined by following steps 1 and 2 described below. In the following, four PUSCHs (PUSCH #0 to # 3) are described as an example, but the number of PUSCHs is not limited thereto, and the channel/signal to be transmitted may be any channel/signal.

The payloads (payloads #0 to # 3) of the four PUSCHs (PUSCH #0 to # 3) spatially multiplexed are determined/calculated, and the four PUSCHs are ordered (ordered/reordered) (re-ordered) (step 1).

The PUSCH and port mapping is performed so that the power allocation ratio based on the payload is set (step 2).

The above steps 1 and 2 will be described with reference to fig. 7.

In step 1 described above, the UE orders the payloads of the four PUSCHs in order from large to small (or from small to large) (for example, orders pusch#2, pusch#1, pusch#3, pusch#0 in order from large to small).

In step 2 described above, the UE performs PUSCH-port mapping such that a higher power allocation ratio is set for a PUSCH with a large (or small) payload. In this case, the UE may determine that pusch#0 corresponds to port#3, pusch#1 corresponds to port#1, pusch#2 corresponds to port#0, and pusch#3 corresponds to port#2, respectively.

In this case, the method for determining the power distribution ratio described in embodiment 3-2 can be applied to the determination of the power ratio between the group of layers and the port group. The power ratio between the multiple layers/ports within a group may be either aliquoting or non-aliquoting. The UE may determine the power ratio (value) of the equal division/unequal division based on CSI information of each layer/port in one group, for example.

According to embodiment 3-2, the power ratio can be controlled more flexibly.

According to the third embodiment, by performing the payload-based power allocation control, the optimal coverage compensation can be achieved.

< fourth embodiment >, a third embodiment

The fourth embodiment relates to power control based on (category/content of) transmission channels/signals.

Embodiment 4-1

When different transmission channels/signals are transmitted (or spatially multiplexed) by using a plurality of layers, the power allocation of the transmission channels/signals may be determined based on (the type/content of) the transmission channels/signals.

Fig. 9 shows an example of the case where layers #0 to #3 are mapped with UL channel/UL signals #1 to #4, respectively. The UE may also determine the transmit power (e.g., P0 to P3) or power allocation of the transmit channel/signal based on which transmit channel/signal is transmitted.

The transmission channel/signal may also be at least one of the following categories/contents:

PUSCH only.

PUSCH including UCI (HARQ-ACK information/SR/CSI report as content).

·PUCCH。

Physical side link shared channel (Physical Sidelink Shared Channel (PSSCH)).

Physical side link control channel (Physical Sidelink Control Channel (PSCCH)).

·PRACH。

·SRS。

In the present disclosure, PUSCH, uplink data channel, uplink shared channel, uplink data, and the like may also be replaced with each other. In addition, UCI, PUCCH, and uplink control information may be replaced with each other.

The priority (embodiment 4-1-1) may be defined for each transmission channel/signal (type/content). The UE may also control power allocation based on the priority.

For example, the UE may allocate a large power ratio in the order of (category/content of) transmission channels/signals with high priority.

For example, the priority may be an existing (specified up to rel.16) priority. For example, the priority may be defined from high to low in the order described below:

PRACH transmission in PCell.

PUCCH or PUSCH transmission of higher (small) priority index.

In the case of PUCCH and PUSCH transmissions with the same priority index, PUCCH transmission including HARQ-ACK information/SR/link recovery request (link recovery request (LRR)) or PUSCH transmission including HARQ-ACK information.

In the case of PUCCH and PUSCH transmissions with the same priority index, PUCCH transmission containing CSI or PUSCH transmission containing CSI is performed.

In the case of PUCCH and PUSCH transmissions of the same priority index, PUSCH transmission that does not contain HARQ-ACK information or CSI, PUSCH transmission for a random access procedure (e.g., type 2 random access procedure), and PUSCH transmission in PCell.

SRS transmission of aperiodic SRS with higher priority than semi-persistent/periodic SRS, or PRACH transmission in a serving cell other than PCell.

Further, a priority of each new channel/signal may be defined for MIMO multiplexing (space division multiplexing (SDM)).

For example, the new priority may be defined in the order of the priority described below from high to low:

PUSCH transmission with UCI multiplexed.

PUSCH transmission with UCI not multiplexed.

PUCCH transmission including HARQ-ACK information/SR.

PUCCH transmission containing CSI report only.

The order of (types of) channels and signals described in the embodiments of the present disclosure is merely an example, and the order of (types of) channels and signals within the described order may be the order of (types of) priority after exchanging them.

Different kinds of transmission channels/signals may also be spatially multiplexed. At this time, the power ratio between layers may be determined in accordance with at least one of the following embodiments 4-1-2 to 4-1-4.

PUSCH and PUCCH may also be spatially multiplexed (embodiments 4-1-2).

At this time, the priority of (the category/content of) the channel may also be set in the following order from high to low:

PUSCH including UCI (including at least HARQ-ACK),

·PUSCH，

PUCCH containing at least HARQ-ACK,

PUCCH not containing HARQ-ACK.

In embodiment 4-1-2, (category/content of) each channel may correspond to one or more layers. For example, the structure may be such that two layers are associated with PUSCH and a layer different from the layer associated with PUSCH is associated with PUCCH.

The PUSCH and the PSSCH may also be spatially multiplexed (embodiments 4-1-3).

In embodiment 4-1-3, the priority of (the category/content of) the channel may also be set from high to low in the following order (embodiment 4-1-3-1):

·PUSCH，

·PSSCH。

in embodiment 4-1-3, when a specific condition is satisfied, the power of PUSCH transmission or PSSCH transmission may be set/instructed independently of the transmission power set/instructed for PUSCH transmission/PSSCH transmission, may be specified in the specification, or may be set by higher layer signaling (RRC signaling/MAC CE) (embodiment 4-1-3-2).

The specific condition may be, for example, the presence or absence of setting of precoding to be used for spatial multiplexing of PUSCH and PSSCH. For example, when precoding for spatial multiplexing of PUSCH and PSSCH is not set, the UE may determine the power ratio of the PSSCH to a specific value (for example, 0). At this time, the PUSCH power ratio may be 1- (a specific value).

In embodiments 4-1-3, (category/content of) each channel may correspond to one or more layers. For example, the structure may be such that two layers are allocated to PUSCH and a layer different from the layer allocated to PUSCH is allocated to PSSCH.

PUSCH and PRACH may also be spatially multiplexed (embodiments 4-1-4).

In embodiment 4-1-4, the priority of (the category/content of) the channel may also be set from high to low in the following order (embodiment 4-1-3-1):

(in case the PRACH is ordered (ordered) by PDCCH)

·PUSCH，

·PRACH。

(in the case where this is not the case)

·PRACH，

·PUSCH。

In embodiment 4-1 to 4, when a specific condition is satisfied, the power of PUSCH transmission or PRACH transmission may be set/instructed independently of the transmission power set/instructed for PUSCH transmission/PRACH transmission, may be specified in the specification, or may be set by higher layer signaling (RRC signaling/MAC CE) (embodiment 4-1 to 4-2).

The specific condition may be, for example, the presence or absence of a precoding setting for spatial multiplexing use of PUSCH and PRACH. For example, when precoding for spatial multiplexing of PUSCH and PRACH is not set, the UE may determine the power ratio of PUSCH to a specific value (for example, 0). At this time, the power ratio of PRACH may be 1- (a specific value).

The specific condition may be, for example, whether or not the PRACH is set in accordance with the reception of the SSB. For example, if the PRACH is set in response to the reception of SSB, the UE may determine the PUSCH power ratio to a specific value (for example, 0). At this time, the power ratio of PRACH may be 1- (a specific value).

In addition, in the case where the above-described map 1 (map 1 is assumed) is applied, the UE may control power allocation in accordance with the above-described embodiment 4-1.

In addition, when the above-described mapping 2 (mapping 2 is assumed), the UE may determine that a layer/port corresponding to the same TB/CW/channel/signal (RS)/sequence is one layer/port group.

In this case, the method for determining the power distribution ratio described in embodiment 2-2/3-2 may be applied to the determination of the power ratio between the group of layers and the port group. The power ratio between the multiple layers/ports within a group may be either aliquoting or non-aliquoting. The UE may determine the power ratio (value) of the equal division/unequal division based on CSI information of each layer/port in one group, for example.

Modification of embodiment 4-1

The power ratio of a particular channel with low priority may also be determined to be 0 when different channels/signals are spatially multiplexed. In other words, when different channels/signals are spatially multiplexed, a particular channel with a low priority may also be dropped.

For example, when PUSCH and PRACH are spatially multiplexed, the UE may discard PUSCH (or may determine that the power ratio of PUSCH is 0).

According to embodiment 4-1, power allocation can be appropriately controlled for each channel/signal to be transmitted.

Embodiment 4-2

Channels/signals other than PUSCH may be spatially multiplexed using multiple layers/ports.

For example, in multiple layers/ports, PUCCHs may also be spatially multiplexed. Fig. 10 shows an example of the case where layers #0 to #3 are mapped with PUCCHs #1 to #4, respectively. In this case, the determination/control of the power ratio in each layer may be performed in accordance with at least one of the first to third embodiments described above.

The determination/control of the power ratio in each layer may be performed based on uplink control information multiplexed to (or transmitted by) the PUCCH. For example, if PUCCH #1 is mapped with HARQ-ACK and PUCCH #2 is mapped with CSI (HARQ-ACK is not mapped), the transmission power of PUCCH #1 may be set higher than that of PUCCH # 2. In addition, one uplink control information may also be mapped to a plurality of layers.

Further, PRACH may also be spatially multiplexed, for example, in multiple layers/ports. In this case, the determination/control of the power ratio in each layer may be performed in accordance with at least one of the first to third embodiments described above.

According to embodiment 4-2, power allocation in spatial multiplexing of channels and signals other than PUSCH can be performed appropriately.

< fifth embodiment >, a third embodiment

The fifth embodiment relates to power control based on control information.

In the fifth embodiment, the power allocation (power ratio) between layers and ports may be determined based on control information (e.g., DCI) received from a base station. The UE may determine the power allocation (power ratio) between layers/ports based on DCI (a specific field included therein).

Embodiment mode 5-1

In embodiment 5-1, the UE may be notified/instructed of the power ratio in each layer/port according to the number of layers/ports supported by the UE. The UE may also report UE capability information related to the number of layers/ports supported by the UE to the network (NW, base station).

For example, the UE may determine the power ratio in each layer/port according to the number of layers/ports based on a specific field included in the DCI.

In embodiment 5-1, the power ratio in each layer/port may be determined based on the CSI feedback/SRS reception quality for each layer/port.

In embodiment 5-1, the UE may receive control information indicating the power ratio after a first period (for example, x symbols) from CSI feedback/SRS transmission (NW-based reception) for each layer/port of the UE.

In embodiment 5-1, the UE may be applied with the power ratio notified/instructed by the control information in a slot/symbol after the second period (for example, y1 symbol/slot) from the time when the UE receives the control information notifying/instructing the power ratio.

In embodiment 5-1, the UE may be configured to apply the power ratio notified/indicated by the control information in a slot/symbol before the third period (for example, y2 symbol/slot) from when the UE receives the control information notifying/indicating the power ratio.

Embodiment mode 5-2

In embodiment 5-2, the information on the power allocation (information on the power ratio) described in embodiments 2-2 and 3-2 may be set in advance for the UE. The UE may indicate, via control information (DCI) (a specific field included in the DCI), a power ratio corresponding to a plurality of layers/ports included in the set information on power allocation.

The granularity of the values of the respective power ratios (e.g., 0.1) may also be specified. The total of the power ratios in the plurality of layers/ports corresponding to one code point of the specific field included in the DCI may be a specific value (for example, 1).

Fig. 11 is a diagram showing an example of information related to power allocation according to embodiment 5-2. As shown in fig. 11, for the UE, the power ratio of the plurality of layers #0 to #3 is set as information related to power allocation. The UE may also determine the power ratio applied to layers #0 to #3 based on (the code point of) a specific field included in the DCI. In the example shown in fig. 11, when the DCI code point indicates 01, the UE determines that the power ratio of each layer is 0.25.

In the drawing illustrating the DCI instruction in the present disclosure as shown in fig. 11, the number of bits, the number of layers/ports, the value of the power ratio, and the number of TBs/CWs of the DCI code point are merely examples, and are not limited to the examples described.

Embodiment modes 5 to 3

In embodiment 5-3, the information on the power allocation (information on the power ratio) described in embodiments 2-2 and 3-2 may be set in advance for the UE. The UE may be notified/instructed by using control information (e.g., DCI) with respect to a specific period of the power ratio value among the plurality of power ratio values included in the set power allocation-related information.

The specific period may be notified/set/indicated to the UE using higher layer signaling/physical layer signaling or may be specified in the specification.

For example, when the reception slot of the control information (DCI) is N, the specific period may be a period from n+a1 slots to n+a2 slots. a1 and a2 may be set/indicated to the UE by higher layer signaling/physical layer signaling or may be specified in the specification.

When the reception slot of the control information (DCI) is N, the specific period may be a period after the n+a3 slot. a3 may be set/indicated to the UE by higher layer signaling/physical layer signaling or may be specified in the specification.

The specific period may be a period from reception of control information (DCI) to nth UL transmission (n is an integer of 1 or more).

By setting the power ratio to be able to be set only in an appropriate period in this way, it is possible to set an element (e.g., channel quality) in consideration of the estimated time variation.

In embodiment 5-3, the information on the power allocation (information on the power ratio) described in embodiments 2-2 and 3-2 may be set in advance for the UE. The UE may be notified/instructed to change the value of one or more power ratios included in the information on the set power allocation to a specific value using control information (e.g., DCI).

The particular value may also be 0. At this time, the UE may increment (increase) the value of the power ratio in the layers/ports other than the layer/port instructed to be changed to 0 by the control information (DCI) by the same value each time so that the total of the values becomes 1.

The specific value may be 1. At this time, the UE may change the value of the power ratio in the layer/port other than the layer/port instructed to be changed to 1 by the control information (DCI) to 0.

For the UE, information related to the specific value may also be set/indicated using higher layer signaling/control information (DCI). The information related to the specific value may be information indicating that the specific value is 0 or 1.

By setting the values of the plurality of power ratios to be changeable in this way, appropriate power control can be performed when there is a layer/port corresponding to a channel whose channel quality is instantaneously degraded.

Fig. 12A and 12B are diagrams showing an example of a method for changing the power ratio according to embodiment 5-3. Fig. 12A and 12B illustrate a method of using DCI to instruct changing the power ratio of a specific layer to 0. The UE may also use one layer (fig. 12A) for which DCI is instructed to change the power ratio to 0. The UE may use one or more layers for which the DCI is instructed to change the power ratio to 0 (fig. 12B).

Embodiment modes 5 to 4

In embodiments 5 to 4, information on power allocation per TB/CW (information on power ratio) may be set in advance for the UE. The UE may also be instructed to set a power ratio corresponding to a plurality of TBs/CWs, which is included in information related to power allocation, by control information (DCI) (a specific field included in the DCI) (embodiment 5-4-1).

The granularity of the values of the respective power ratios (e.g., 0.1) may also be specified. The total of the power ratios in the plurality of TBs/CWs corresponding to one code point of the specific field included in the DCI may be a specific value (for example, 1).

In embodiment 5-4-1, the power ratio of the plurality of layers/ports corresponding to the same TB/CW may also be set/controlled following at least one of the second to fifth embodiments described above. For example, as described in this embodiment, the power ratios corresponding to the plurality of TBs/CWs may be determined, and the power ratios of the plurality of layers/ports corresponding to the same TB/CW may be determined in accordance with the above-described embodiment 5-2 or 5-3. For example, as described in this embodiment, the power ratio corresponding to the plurality of TBs/CWs may be determined, and the power ratio of the plurality of layers/ports corresponding to the same TB/CW may be determined in accordance with embodiment 2-2.

In embodiments 5 to 4, information on power allocation per TB/CW (information on power ratio) may be set in advance for the UE. The UE may be notified/instructed by using control information (e.g., DCI) with respect to a specific period of the power ratio value among the plurality of power ratio values included in the information related to the set power allocation (embodiment 5-4-2).

In embodiments 5 to 4, information on power allocation per TB/CW (information on power ratio) may be set in advance for the UE. The UE may be notified/instructed to change the value of one or more power ratios included in the information on the set power allocation to a specific value using control information (e.g., DCI) (embodiment 5-4-3).

In embodiments 5-4-2 and 5-4-3, the power ratio of the plurality of layers/ports corresponding to the same TB/CW may also be set/controlled following at least one of the second to fifth embodiments described above. For example, as described in this embodiment, the power ratios corresponding to the plurality of TBs/CWs may be determined, and the power ratios of the plurality of layers/ports corresponding to the same TB/CW may be determined in accordance with the above-described embodiment 5-2 or 5-3. For example, as described in this embodiment, the power ratio corresponding to the plurality of TBs/CWs may be determined, and the power ratio of the plurality of layers/ports corresponding to the same TB/CW may be determined in accordance with embodiment 2-2.

Embodiment modes 5 to 5

In embodiments 5 to 5, an example of a field of DCI used for notification relating to a power ratio will be described.

The UE may also use one DCI field (code point) to determine the power ratio corresponding to multiple layers/ports (embodiment 5-5-1).

The correspondence between the DCI field (code point) and the power ratio may be specified in the specification in advance, or may be notified to the UE using higher layer signaling.

Fig. 13A is a diagram showing an example of the correspondence relationship between DCI code points and power ratios according to embodiments 5 to 5. As shown in fig. 13A, a correspondence relationship is defined/set such that a plurality of layers of power ratios (power set values) are associated with one DCI code point. The UE determines a power ratio corresponding to one code point indicated by the DCI according to the correspondence.

The UE may also determine the power ratio corresponding to a plurality of layers/ports using a plurality of DCI fields (code points) (embodiment 5-5-2).

The UE may also receive DCI fields (code points) for the number of layers/ports/TBs/CWs.

Fig. 13B is a diagram showing another example of the correspondence relation between DCI code points and power ratios according to embodiments 5 to 5. As shown in fig. 13B, a correspondence relationship is defined/set for a specific TB, in which a plurality of layers of power ratios are associated with one DCI code point. Based on the correspondence relation, the UE determines, for each TB, a power ratio corresponding to the code point indicated by the DCI.

In embodiments 5 to 5, the association between the priority of the channel/signal (for example, the priority described in the fourth embodiment) and the index of the layer/port may be defined. For example, a channel/signal with a high priority may be defined as being associated with an index of a small (or large) layer/port. Thus, for example, by associating a channel with a layer, the number of bits in the DCI field for changing the power ratio can be reduced.

According to the above fifth embodiment, the power allocation corresponding to the layer/port/TB/CW can be appropriately and flexibly controlled using the control information.

< others >

In the above embodiment, the example in which the power distribution ratio is set in proportion to the size of the TBS/payload has been shown, but the power distribution ratio may be set in inverse proportion to the size of the TBS/payload.

For the power allocation ratio in at least one of the above embodiments, the inter-layer/port power ratio may also be set/indicated/notified using higher layer signaling (RRC information element/MAC CE)/physical layer signaling (DCI).

The power distribution ratio in at least one of the above embodiments may be determined as the layer/port power ratio in the precoding matrix. In this case, the power ratio between the layers may be the same or different. In the present disclosure, the power ratio may also be replaced with the amplitude ratio (in the precoding matrix).

For the power ratio, the power in each port may be determined following at least one of the result of singular value decomposition of the channel matrix using SVD and the water injection theorem. The water injection theorem can also be expressed by the above formula 1.

The power control in embodiments of the present disclosure may also be applied to repetition (repetition). The UE may also decide/apply the same power ratio through multiple repeated transmissions. The UE may determine/apply the power ratio independently for each repeated transmission (for each transmission). For example, the UE may be preset/notified of a candidate of the layer/port power ratio for each repeated transmission (each transmission), and notified of a power ratio from the candidate in the DCI triggering the repeated transmission.

Further, the power control in the present disclosure may also be applied to retransmission control. The UE may determine/apply the same power ratio as the initial transmission/last retransmission at the time of channel/signal retransmission. The UE may determine/apply the power ratio independently for each retransmission (each transmission) (e.g., determine the transmission power of only a specific layer to a specific value (e.g., 1 or 0)).

In addition, at least one of the above embodiments may also be applied only to UEs that report or support a specific UE capability (UE capability).

The particular UE capability may also represent at least one of:

whether power control of PUSCH per layer/port/TRP is supported,

whether spatial multiplexing with at least one of a specific number (e.g., 4) of layers/ports and a specific number (e.g., 2) of CWs is supported,

whether spatial multiplexing of different multiple channels/signals is supported,

whether spatial multiplexing of channels/signals (e.g., PUCCH/PRACH) other than PUSCH is supported.

In addition, the specific UE capability may be a capability for a CB-based PUSCH, a capability for an NCB-based PUSCH, or a capability not to distinguish them.

The specific UE capability may be a capability to be applied across all frequencies (common regardless of frequency), a capability per frequency (e.g., cell, band, BWP), a capability per frequency range (e.g., FR1, FR 2), or a capability per subcarrier interval.

The specific UE capability may be a capability applied across all duplex modes (common regardless of duplex modes), or a capability per duplex mode (for example, time division duplex (Time Division Duplex (TDD)), frequency division duplex (Frequency Division Duplex (FDD))).

In addition, at least one of the above embodiments may be applied when the UE is set with specific information associated with the above embodiment through higher layer signaling (when not set, for example, operations of rel.15/16 are applied). For example, the specific information may be information indicating the power of PUSCH activating each layer/port/TRP, an arbitrary RRC parameter for a specific version (e.g., rel.18), or the like. In addition, regarding which embodiment, situation, or condition described above is used to control PHR, the UE may be set using higher layer parameters.

The "layer" of the present disclosure may be replaced with at least one of "TRP", "RS (e.g., reference RS corresponding to SRS and TCI state)", "PUSCH transmission corresponding to RS", "PDSCH transmission/reception corresponding to RS", "PUSCH", "PDSCH", "group constituted by PUSCH transmission corresponding to one or more RSs (group including PUSCH transmission corresponding to one or more RSs)", "group constituted by PDSCH transmission/reception corresponding to one or more RSs (group including PDSCH transmission/reception corresponding to one or more RSs)", and the like.

(Wireless communication System)

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

Fig. 14 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 by using long term evolution (Long Term Evolution (LTE)) standardized by the third generation partnership project (Third Generation Partnership Project (3 GPP)), the fifth generation mobile communication system new wireless (5 th generation mobile communication system New Radio (5G NR)), or the like.

The wireless communication system 1 may support dual connection (Multi-RAT dual connection (Multi-RAT Dual Connectivity (MR-DC))) between a plurality of radio access technologies (Radio Access Technology (RATs)). MR-DC may also include a dual connection of LTE (evolved universal terrestrial radio Access (Evolved Universal Terrestrial Radio Access (E-UTRA))) with NR (E-UTRA-NR dual connection (E-UTRA-NR Dual Connectivity (EN-DC))), NR with LTE (NR-E-UTRA dual connection (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

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

The wireless communication system 1 may also support dual connections between multiple base stations within the same RAT (e.g., dual connection (NR-NR dual connection (NR-NR Dual Connectivity (NN-DC))) of a base station (gNB) where both MN and SN are NRs).

The radio communication system 1 may include a base station 11 forming a macro cell C1 having a relatively wide coverage area, and base stations 12 (12 a 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, etc. of each cell and user terminal 20 are not limited to those shown in the figure. Hereinafter, the base stations 11 and 12 are collectively referred to as a 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 (CA)) using a plurality of component carriers (Component Carrier (CC)) and Dual Connection (DC).

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

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

The plurality of base stations 10 may also be connected by wire (e.g., optical fiber based on a common public radio interface (Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to a higher-level station may be referred to as an integrated access backhaul (Integrated Access Backhaul (IAB)) host (donor), and the base station 12 corresponding to a relay station (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 an evolved packet Core (Evolved Packet Core (EPC)), a 5G Core Network (5 GCN), a next generation Core (Next Generation Core (NGC)), 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.

In the wireless communication system 1, a wireless access scheme based on orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) may be used. For example, cyclic prefix OFDM (Cyclic Prefix OFDM (CP-OFDM)), discrete fourier transform spread OFDM (Discrete Fourier Transform Spread OFDM (DFT-s-OFDM)), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access (OFDMA)), single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access (SC-FDMA)), and the like may be used in at least one of Downlink (DL)) and Uplink (UL).

The radio access scheme may also be referred to as 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 used for the UL and DL radio access schemes.

As the downlink channel, a downlink shared channel (physical downlink shared channel (Physical Downlink Shared Channel (PDSCH))), a broadcast channel (physical broadcast channel (Physical Broadcast Channel (PBCH)))), a downlink control channel (physical downlink control channel (Physical Downlink Control Channel (PDCCH))), and the like shared by the user terminals 20 may be used in the wireless communication system 1.

As the uplink channel, an uplink shared channel (physical uplink shared channel (Physical Uplink Shared Channel (PUSCH))), an uplink control channel (physical uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (physical random access channel (Physical Random Access Channel (PRACH))), or the like shared by the user terminals 20 may be used in the wireless communication system 1.

User data, higher layer control information, system information blocks (System Information Block (SIBs)), and the like are transmitted through the PDSCH. User data, higher layer control information, etc. may also be transmitted through the PUSCH. In addition, a master information block (Master Information Block (MIB)) may also be transmitted through the PBCH.

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

The DCI scheduling PDSCH may be referred to as DL allocation, DL DCI, or the like, and the DCI scheduling PUSCH may be referred to as UL grant, UL DCI, or the like. 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 (COntrol REsource SET (CORESET)) and a search space (search space) may also be utilized. CORESET corresponds to searching for the resources of DCI. The search space corresponds to a search region of PDCCH candidates (PDCCH candidates) and a search method. A CORESET may also be associated with one or more search spaces. The UE may also monitor CORESET associated with a certain search space based on the search space settings.

One search space may also correspond to PDCCH candidates corresponding to one or more aggregation levels (aggregation Level). One 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 also be replaced with each other.

Uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (Channel State Information (CSI)), transmission acknowledgement information (e.g., also referred to as hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)), ACK/NACK, etc.), and scheduling request (Scheduling Request (SR)) may also be transmitted through the PUCCH. The random access preamble used to establish a connection with a cell may also be transmitted via the PRACH.

In addition, in the present disclosure, downlink, uplink, etc. may be expressed without "link". The present invention may be expressed without "Physical" at the beginning of each channel.

In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted. As DL-RS, a Cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like may be transmitted in the wireless communication system 1.

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

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

(base station)

Fig. 15 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 path interface (transmission line interface (transmission line interface)) 140. The control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided with one or more components.

In this example, the functional blocks of the characteristic part in the present embodiment are mainly shown, and it is also conceivable that the base station 10 has 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 control of the entire base station 10. The control unit 110 can be configured by a controller, a control circuit, or 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), etc. The control unit 110 may control transmission/reception, measurement, and the like using the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission path interface 140. The control unit 110 may generate data, control information, a sequence (sequence), and the like transmitted as signals, and forward the generated data to the transmitting/receiving unit 120. The control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.

The transmitting/receiving unit 120 may include a baseband (baseband) unit 121, a Radio Frequency (RF) 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 transmitting/receiving unit 120 may be configured of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (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 transmitting/receiving unit 120 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission unit may be composed of the transmission processing unit 1211 and the RF unit 122. The receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

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

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

The transmitting-receiving unit 120 may also 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.

The transmission/reception section 120 (transmission processing section 1211) may perform processing of a packet data convergence protocol (Packet Data Convergence Protocol (PDCP)) layer, processing of a radio link control (Radio Link Control (RLC)) layer (for example, RLC retransmission control), processing of a medium access control (Medium Access Control (MAC)) layer (for example, HARQ retransmission control), and the like with respect to data, control information, and the like acquired from the control section 110, for example, to generate a bit sequence to be transmitted.

The transmission/reception section 120 (transmission processing section 1211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing (filtering processing), discrete fourier transform (Discrete Fourier Transform (DFT)) processing (if necessary), inverse fast fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, and digital-analog conversion on a bit string to be transmitted, and output a baseband signal.

The transmitting/receiving unit 120 (RF unit 122) may perform modulation, filter processing, amplification, etc. on the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmitting/receiving antenna 130.

On the other hand, the transmitting/receiving unit 120 (RF unit 122) may amplify, filter-process, demodulate a signal in a radio frequency band received through the transmitting/receiving antenna 130, and the like.

The transmitting/receiving section 120 (reception processing section 1212) may apply an analog-to-digital conversion, a fast fourier transform (Fast Fourier Transform (FFT)) process, an inverse discrete fourier transform (Inverse Discrete Fourier Transform (IDFT)) process (if necessary), a filter process, demapping, demodulation, decoding (error correction decoding may be included), a MAC layer process, an RLC layer process, a PDCP layer process, and other reception processes to the acquired baseband signal, and acquire user data.

The transmitting-receiving unit 120 (measuring unit 123) may also perform measurements related to the received signals. For example, measurement section 123 may perform radio resource management (Radio Resource Management (RRM)) measurement, channel state information (Channel State Information (CSI)) measurement, and the like based on the received signal. Measurement section 123 may also measure received power (for example, reference signal received power (Reference Signal Received Power (RSRP))), received quality (for example, reference signal received quality (Reference Signal Received Quality (RSRQ)), signal-to-interference-plus-noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal-to-noise ratio (Signal to Noise Ratio (SNR))), signal strength (for example, received signal strength indicator (Received Signal Strength Indicator (RSSI)), 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, other base stations 10, and the like included in the core network 30, or may acquire and transmit user data (user plane data), control plane data, and the like for the user terminal 20.

In addition, 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 path interface 140.

The transmission/reception unit 120 may also transmit information for performing determination of each of a number of layers corresponding to each of a plurality of different Transport Blocks (TBs) and control of association of each of the plurality of TBs with a layer to the terminal. The transmitting-receiving unit 120 may also receive each of the plurality of different TBs transmitted in the same time resource and frequency resource using more than one layer (first embodiment).

The transmitting/receiving unit 120 may transmit information for performing control of applying different power ratios to a plurality of uplink shared channels based on at least one of a transport block size and a payload size of the plurality of uplink shared channels to the terminal. The transmitting/receiving unit 120 may receive the plurality of uplink shared channels to which the different power ratios are applied (second and third embodiments).

The transmitting/receiving unit 120 may also transmit information for applying different power ratios to one or more layers corresponding to each of a plurality of channels based on priorities corresponding to the channels to the terminal. The transmitting/receiving unit 120 may receive the plurality of channels to which the different power ratios are applied in the same time resource and frequency resource (fourth embodiment).

The transmitting-receiving unit 120 may also transmit information for applying different power ratios for a plurality of layers to the terminal. The transmitting/receiving unit 120 may also receive an uplink control channel and a random access channel of the plurality of layers transmitted by the terminal applying the different power ratios based on the information (fourth embodiment).

The transmitting/receiving unit 120 may transmit setting information and downlink control information notified using higher layer signaling for performing control of applying different power ratios to a plurality of layers. The transmitting/receiving unit 120 may also perform reception of the uplink shared channel of the plurality of layers to which the different power ratios are applied (fifth embodiment).

(user terminal)

Fig. 16 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting/receiving unit 220, and a transmitting/receiving antenna 230. The control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided with one or more types.

In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it is also conceivable that the user terminal 20 further has 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 control of the entire user terminal 20. The control unit 210 can be configured by a controller, a control circuit, or the like described based on common knowledge in the technical field of the present disclosure.

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

The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting/receiving unit 220 may be configured of 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 transmitting/receiving unit 220 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission means may be constituted by the transmission processing means 2211 and the RF means 222. The receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

The transmitting/receiving antenna 230 may be constituted by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna or the like.

The transceiver unit 220 may also receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transceiver unit 220 may transmit the uplink channel, the uplink reference signal, and the like.

The transmitting-receiving unit 220 may also 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.

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

The transmission/reception section 220 (transmission processing section 2211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion, and the like for a bit string to be transmitted, and output a baseband signal.

Further, whether to apply DFT processing may be based on the setting of the transform precoder. For a certain channel (e.g., PUSCH), when the transform precoder is active (enabled), the transmission/reception section 220 (transmission processing section 2211) may perform DFT processing as the transmission processing for transmitting the channel using a DFT-s-OFDM waveform, and if not, the transmission/reception section 220 (transmission processing section 2211) may not perform DFT processing as the transmission processing.

The transmitting/receiving unit 220 (RF unit 222) may perform modulation, filter processing, amplification, etc. for the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmitting/receiving antenna 230.

On the other hand, the transmitting/receiving unit 220 (RF unit 222) may amplify, filter-process, demodulate a baseband signal, and the like, with respect to a signal in a radio frequency band received through the transmitting/receiving antenna 230.

The transmitting/receiving 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 (error correction decoding may be included), 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 signals. For example, the measurement unit 223 may also perform RRM measurement, CSI measurement, and the like based on the received signal. The 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), etc. The measurement results may also be output to the control unit 210.

In addition, 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 and receiving unit 220 and the transmitting and receiving antenna 230.

The control unit 210 may determine the number of layers corresponding to each of a plurality of different Transport Blocks (TBs) for each TB, and perform control of association of each of the plurality of TBs with a layer. The transmitting/receiving unit 220 may transmit each of the plurality of different TBs in the same time resource and frequency resource using more than one layer (first embodiment).

The control unit 210 may determine the number of layers and a layer corresponding to each of the plurality of TBs based on at least one of the size of each of the plurality of TBs, at least one of the downlink reference signal and the uplink reference signal, and at least one of priorities of the TBs (first embodiment).

The control unit 210 may also determine the number of layers corresponding to each of the plurality of different TBs using at least one of higher layer signaling and downlink control information (first embodiment).

The number of layers may be the maximum number of layers that can be multiplexed for one transmission opportunity (first embodiment).

The control unit 210 may also perform control to apply different power ratios to a plurality of uplink shared channels based on at least one of the transport block sizes and the payload sizes of the plurality of uplink shared channels. The transmitting/receiving unit 220 may apply the different power ratios to transmit the plurality of uplink shared channels (second and third embodiments).

The control unit 210 may determine the different power ratios based on the ratios of the transport blocks of the plurality of uplink shared channels (second embodiment).

The control unit 210 may determine the different power ratios based on a ratio of payload sizes of the plurality of uplink shared channels of a medium access control protocol data unit (Medium Access Control Protocol Data Unit (MAC-PDU)).

The transceiver unit 220 may also use higher layer signaling to receive information related to the different power ratios. The control unit 210 may perform control to apply the different power ratios based on information on the different power ratios and at least one of the transport block size and the payload size (second and third embodiments).

The control unit 210 may also perform control to apply a different power ratio to one or more layers corresponding to each of the plurality of channels based on the priority corresponding to each of the plurality of channels. The transmitting/receiving unit 220 may also apply the different power ratios to transmit the plurality of channels in the same time resource and frequency resource (fourth embodiment).

The plurality of channels may be at least two of a physical uplink shared channel, a physical uplink control channel, a physical side link shared channel, a physical side link control channel, a physical random access channel, and a sounding reference signal (fourth embodiment).

The priority of the channel including the hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)) may be higher than that of the channel not including the HARQ-ACK (fourth embodiment).

The control unit 210 may determine that the power ratio in the layer corresponding to at least one of the channel and the signal of the low priority among at least one of the different types of channels and signals is 0 (fourth embodiment).

The control unit 210 may also perform control to apply different power ratios for the plurality of layers. The transmitting/receiving unit 220 may apply the different power ratios to transmit at least one of the uplink control channel and the random access channel of the plurality of layers (fourth embodiment).

The control unit 210 may determine that a plurality of layers are associated with each different piece of uplink control information included in the uplink control channel (fourth embodiment).

In the case of transmitting the uplink control channel of the plurality of layers, the control unit 210 may preferentially determine the different power ratios in a layer transmitting hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)) information included in the uplink control channel (fourth embodiment).

The control unit 210 may perform control to apply different power ratios to the plurality of layers based on at least one of the setting information and the downlink control information notified by the higher layer signaling. The transmitting/receiving unit 220 may apply the different power ratios to transmit the uplink shared channel of the plurality of layers (fifth embodiment).

The different power ratios may be based on at least one of reporting of channel state information and reception quality of a sounding reference signal (fifth embodiment).

The control unit 210 may change the power ratio of at least one of the specific layer and the TB in the setting information to a specific value based on the downlink control information (fifth embodiment).

(hardware construction)

The block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. The implementation method of each functional block is not particularly limited. That is, each functional block may be realized by one device physically or logically combined, or two or more devices physically or logically separated may be directly or indirectly connected (for example, by a wire, a wireless, or the like) and realized by these plural devices. The functional blocks may also be implemented by combining the above-described device or devices with software.

Here, the functions include, but are not limited to, judgment, decision, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcasting), notification (notification), communication (communication), forwarding (forwarding), configuration (configuration), reconfiguration (reconfiguration), allocation (mapping), assignment (allocation), and the like. For example, a functional block (structural unit) that realizes the transmission function may also be referred to as a transmission unit (transmitting unit), a transmitter (transmitter), or the like. As described above, the implementation method is not particularly limited.

For example, a base station, a user terminal, and the like in one embodiment of the present disclosure may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 17 is a diagram showing an example of a hardware configuration 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 of devices, circuits, apparatuses, parts (sections), units, and the like can be replaced with each other. The hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to not include a part of the devices.

For example, the processor 1001 is shown as only one, but there may be multiple processors. Further, the processing may be performed by one processor, or the processing may be performed by two or more processors simultaneously, sequentially, or by other means. The processor 1001 may be realized by one or more chips.

Each function in 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, controlling communication via the communication device 1004, or controlling at least one of reading and writing of data in the memory 1002 and the memory 1003.

The processor 1001, for example, causes an operating system to operate to control the entire computer. The processor 1001 may be configured by a central processing unit (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/receiving unit 120 (220), and the like described above may be implemented by the processor 1001.

Further, the processor 1001 reads out a program (program code), a software module, data, or the like from at least one of the memory 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 embodiment can be used. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same may be implemented for other functional blocks.

The Memory 1002 may be a computer-readable recording medium, and may be constituted by at least one of a Read Only Memory (ROM), an erasable programmable Read Only Memory (Erasable Programmable ROM (EPROM)), an electrically erasable programmable Read Only Memory (Electrically EPROM (EEPROM)), a random access Memory (Random Access Memory (RAM)), and other suitable storage media, for example. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage), or the like. The memory 1002 can store programs (program codes), software modules, and the like executable to implement a wireless communication method according to an embodiment of the present disclosure.

The storage 1003 may also be a computer-readable recording medium, for example, constituted by at least one of a flexible disk (flexible Disc), a soft (registered trademark) disk, an magneto-optical disk (for example, a Compact Disc read only memory (CD-ROM), etc.), a digital versatile Disc, a Blu-ray (registered trademark) disk, a removable magnetic disk (removables), a hard disk drive, a smart card, a flash memory device (for example, a card, a stick, a key drive), a magnetic stripe (strip), a database, a server, and other suitable storage medium. The storage 1003 may also be referred to as secondary storage.

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. In order to realize at least one of frequency division duplexing (Frequency Division Duplex (FDD)) and time division duplexing (Time Division Duplex (TDD)), the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like. 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 implemented by physically or logically separating the transmitting unit 120a (220 a) and the receiving unit 120b (220 b).

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

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

The base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an application specific integrated circuit (Application Specific Integrated Circuit (ASIC)), a programmable logic device (Programmable Logic Device (PLD)), and a field programmable gate array (Field Programmable Gate Array (FPGA)), or may be configured to implement a part or all of the functional blocks by using the hardware. For example, the processor 1001 may also be implemented using at least one of these hardware.

(modification)

In addition, with respect to terms described in the present disclosure and terms required for understanding the present disclosure, terms having the same or similar meanings may be substituted. For example, channels, symbols, and signals (signals or signaling) may also be interchanged. In addition, the signal may also be a message. The Reference Signal (RS) can also be simply referred to as RS, and may also be referred to as Pilot (Pilot), pilot Signal, or the like, depending on the standard applied. In addition, the component carrier (Component Carrier (CC)) may also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

A radio frame may also consist 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 formed of one or more slots in the time domain. The subframes may also be a fixed length of time (e.g., 1 ms) independent of the parameter set (numerology).

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

A slot may also be formed in the time domain from one or more symbols, orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) symbols, single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access (SC-FDMA)) symbols, and so on. Furthermore, the time slots may also be time units based on parameter sets.

The time slot may also contain a plurality of mini-slots. Each mini-slot may also be formed of one or more symbols in the time domain. In addition, the mini-slot may also be referred to as a sub-slot. Mini-slots may also be made up of a fewer number of symbols than slots. PDSCH (or PUSCH) transmitted in a larger time unit than the 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 each represent a unit of time when a signal is transmitted. The radio frames, subframes, slots, mini-slots, and symbols may also use other designations that each corresponds to. In addition, the frame, subframe, slot, mini-slot, symbol, and the like units in the present disclosure may also be replaced with each other.

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

Here, TTI refers to, for example, a scheduled minimum time unit in wireless communication. For example, in the LTE system, a base station performs scheduling for each user terminal to allocate radio resources (frequency bandwidth, transmission power, and the like that can be used in 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 data packet (transport block), a code block, a codeword, or the like subjected to channel coding, or may be a processing unit such as scheduling or link adaptation. In addition, when a TTI is given, a time interval (e.g., the number of symbols) in which a transport block, a code block, a codeword, etc. are actually mapped may be shorter than the TTI.

In addition, in the case where 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 also be the minimum time unit of scheduling. In addition, the number of slots (mini-slots) constituting the minimum time unit of the schedule can also be controlled.

A 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 that is shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial or fractional 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 replaced with a TTI having a time length exceeding 1ms, and a short TTI (e.g., a shortened TTI, etc.) may be replaced with a TTI having a TTI length less than the long TTI and a TTI length of 1ms or more.

A Resource Block (RB) is a Resource allocation unit of a time domain and a frequency domain, and may include one or a plurality of consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the 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.

Further, the RB may also contain one or more symbols in the time domain, and may be one slot, one mini-slot, one subframe, or one TTI in length. One TTI, one subframe, etc. may also be respectively composed of one or more resource blocks.

In addition, one or more RBs may also be referred to as Physical Resource Blocks (PRBs), subcarrier groups (SCGs), resource element groups (Resource Element Group (REGs)), PRB pairs, RB peering.

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

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

The BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). For a UE, one or more BWP may also be set in one carrier.

At least one of the set BWP may be active, and the UE may not contemplate transmission and reception of a specific channel/signal other than the active BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced with "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 a 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 the like can be variously changed.

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

In the present disclosure, the names used for parameters and the like are not restrictive names in all aspects. Further, the mathematical expression or the like using these parameters may also be different from that explicitly disclosed in the present disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting names in all respects.

Information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips (chips), and the like 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.

Further, information, signals, etc. can be output in at least one of the following directions: from higher layer (upper layer) to lower layer (lower layer), and from lower layer to higher layer. Information, signals, etc. may also 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 and output information, signals, etc. may be overwritten, updated, or added. The outputted information, signals, etc. may also be deleted. The input information, signals, etc. may also be transmitted to other devices.

The notification of information is not limited to the embodiment described in the present disclosure, but may be performed by other methods. For example, notification of information in the present disclosure may also be implemented by physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI)))), higher layer signaling (e.g., radio resource control (Radio Resource Control (RRC)) signaling, broadcast information (master information block (Master Information Block (MIB)), system information block (System Information Block (SIB)) or the like), medium access control (Medium Access Control (MAC)) signaling), other signals, or a combination thereof.

The physical Layer signaling may be referred to as Layer 1/Layer 2 (L1/L2)) control information (L1/L2 control signal), L1 control information (L1 control signal), or the like. The RRC signaling may be called 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, for example, a MAC control element (MAC Control Element (CE)).

Note that the notification of specific information (for example, notification of "X") is not limited to explicit notification, and may be performed implicitly (for example, by notification of no specific information or notification of other information).

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

Software, whether referred to as software (firmware), middleware (middleware-software), microcode (micro-code), hardware description language, or by other names, should be construed broadly to mean instructions, instruction sets, codes (codes), code segments (code fragments), program codes (program codes), programs (programs), subroutines (sub-programs), software modules (software modules), applications (applications), software applications (software application), software packages (software packages), routines (routines), subroutines (sub-routines), objects (objects), executable files, threads of execution, procedures, functions, and the like.

In addition, software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, in the case of transmitting software 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 (Digital Subscriber Line (DSL)), etc.) and wireless technology (infrared, microwave, etc.), the at least one of wired technology and wireless technology is included in 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", "transmission setting instruction state (Transmission Configuration Indication state (TCI state))", "spatial relationship", "spatial domain filter (spatial domain filter)", "transmission power", "phase rotation", "antenna port group", "layer number", "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))", "radio Base Station", "fixed Station", "NodeB", "eNB (eNodeB)", "gNB (gndeb)", "access Point", "Transmission Point (Transmission Point (TP))", "Reception Point (RP))", "Transmission Reception Point (Transmission/Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", and the like can be used interchangeably. There are also cases where the base station is referred to by terms of a macrocell, a small cell, a femtocell, a picocell, and the like.

The base station can accommodate one or more (e.g., three) cells. In the case of a base station accommodating a plurality of cells, the coverage area of the base station can be divided into a plurality of smaller areas, each of which can also provide communication services through a base station subsystem, such as a small base station for indoor use (remote radio head (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a portion or the entirety of the coverage area of at least one of the base station and the base station subsystem that is in communication service within that coverage area.

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

There are also situations where a mobile station is referred to by 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, hand-held communicator (hand set), user agent, mobile client, or a number of other suitable terms.

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, or the like. The mobile body may be a vehicle (e.g., a vehicle, an airplane, etc.), a mobile body that moves unmanned (e.g., an unmanned aerial vehicle (clone), an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station 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 internet of things (Internet of Things (IoT)) device such as a sensor.

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

Likewise, the user terminal in the present disclosure may be replaced with 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 may be performed by an upper node (upper node) according to circumstances. Obviously, in a network comprising one or more network nodes (network nodes) with base stations, various operations performed for communication with a terminal may be performed by a base station, one or more network nodes other than a base station (e.g. considering a mobility management entity (Mobility Management Entity (MME)), a Serving-Gateway (S-GW)), etc., but not limited thereto, or a combination thereof.

The embodiments described in the present disclosure may be used alone, in combination, or switched depending on the execution. The processing procedures, sequences, flowcharts, and the like of the embodiments and embodiments described in this disclosure may be changed in order as long as they are not contradictory. For example, for the methods described in this disclosure, elements of the various steps are presented using the illustrated order, but are not limited to the particular order presented.

The various modes/embodiments described in the present disclosure can also be applied to long term evolution (Long Term Evolution (LTE)), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), upper 3G, IMT-Advanced, fourth-generation mobile communication system (4 th generation mobile communication system (4G)), fifth-generation mobile communication system (5 th generation mobile communication system (5G)), sixth-generation mobile communication system (6 th generation mobile communication system (6G)), x-th-generation mobile communication system (xth generation mobile communication system (xG)) (xG (x is, for example, an integer, a decimal)), future wireless access (Future Radio Access (FRA)), new wireless access technology (New-Radio Access Technology (RAT)), new wireless (New Radio (NR)), new Radio access (NX), new-generation wireless access (Future generation Radio access (FX)), global system for mobile communication (Global System for Mobile communications (GSM (registered trademark)), 2000, ultra mobile broadband (Ultra Mobile Broadband (UMB)), IEEE 802.11 (IEEE-Fi (registered trademark) 802.16 (Wi) and (registered trademark), bluetooth (20) and other suitable methods based on them, and the like, and the Ultra-WideBand (UWB) can be obtained, multiple systems may also be applied in combination (e.g., LTE or LTE-a, in combination with 5G, etc.).

The term "based on" as used in the present disclosure is not intended to mean "based only on" unless specifically written otherwise. In other words, the recitation of "based on" means "based only on" and "based at least on" both.

Any reference to elements using references to "first," "second," etc. in this disclosure does not fully define the amount or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not mean that only two elements may be employed, or that the first element must be in some form prior to the second element.

The term "determining" used in the present disclosure may include various actions. For example, the "judgment (decision)" may be a case where judgment (decision), calculation (calculation), processing (processing), derivation (development), investigation (investigation), search (lookup), search, inquiry (search in a table, database, or other data structure), confirmation (evaluation), or the like is regarded as "judgment (decision)".

The "determination (decision)" may be a case where reception (e.g., reception of information), transmission (e.g., transmission of information), input (input), output (output), access (processing) (e.g., access to data in a memory), or the like is regarded as "determination (decision)".

The "judgment (decision)" may be a case where resolution (resolution), selection (selection), selection (setting), establishment (establishment), comparison (comparison), or the like is regarded as "judgment (decision)". That is, the "judgment (decision)" may be a case where some actions are regarded as "judgment (decision)" to be performed.

Further, "judgment (decision)" may be replaced with "assumption", "expectation", "consider", or the like.

The terms "connected", "coupled", or all variations thereof as used in this disclosure mean all connections or couplings, either direct or indirect, between two or more elements thereof, and can include the case where one or more intervening elements are present between two elements that are "connected" or "coupled" to each other. The bonding or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access".

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

In the present disclosure, the term "a is different from B" may also mean that "a is different from B". In addition, the term may also mean that "A and B are each different from C". Terms such as "separate," coupled, "and the like may also be construed in the same manner as" different.

In the case where "including", "containing", and variations thereof are used in the present disclosure, these terms are meant to be inclusive in the same sense as the term "comprising". Further, the term "or" as used in this disclosure does not mean exclusive or.

In the present disclosure, for example, in the case where an article is appended by translation as in a, an, and the in english, the present disclosure may also include the case where a noun following the article is in plural form.

While the invention according to the present disclosure has been described in detail, it is obvious 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 a modification and variation without departing from the spirit and scope of the invention defined based on the description of the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not intended to limit the invention in any way.

Claims

1. A terminal, comprising:

a control unit that controls the application of different power ratios to the plurality of layers; and

and a transmission unit configured to transmit at least one of the uplink control channel and the random access channel of the plurality of layers by applying the different power ratios.

2. The terminal of claim 1, wherein,

the control unit determines that a plurality of layers are associated with each different piece of uplink control information included in the uplink control channel.

3. The terminal of claim 1, wherein,

when transmitting the uplink control channel of the plurality of layers, the control unit preferentially determines the different power ratios in a layer transmitting HARQ-ACK information, which is hybrid automatic repeat request acknowledgement information included in the uplink control channel.

4. A wireless communication method for a terminal includes:

a step of performing control to apply different power ratios to the plurality of layers; and

applying the different power ratios for transmission of at least one of an uplink control channel and a random access channel of the plurality of layers.

5. A base station, comprising:

a transmission unit that transmits information for applying different power ratios to a plurality of layers to a terminal; and

and a receiving unit that receives an uplink control channel and a random access channel of the plurality of layers transmitted by the terminal applying the different power ratios based on the information.