RU2789278C1 - Terminal, radio communication method for terminal, base station and system containing terminal and base station - Google Patents

Abstract

FIELD: communications.

SUBSTANCE: invention relates to the field of communications. To achieve the effect, the terminal comprises a receiving section configured to receive a Radio Resource Control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval of a subslot unit; and a control section configured to control, based on the specified RRC layer parameter, to transmit in the slot a plurality of uplink control channels (PUCCHs) for HARQ-ACK per subslot unit.

EFFECT: invention provides the ability to properly control at least one of determining and responding to the HARQ-ACK codebook.

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Description

This application is separated from application No. 2021121692 for a Russian patent for an invention, filed on January 10, 2019.

The field of technology to which the invention belongs

The present invention relates to a user terminal and a radio communication method in next generation mobile communication systems.

State of the art

For networks of the Universal Mobile Telecommunications System (UMTS), a draft Long-Term Evolution (LTE) system specification was proposed, the purpose of which is to further increase the data rate, reduce latency, etc. (see non-patent document 1). In addition, in order to further increase the capacity, to improve, etc., the LTE system (version 8 and version 9 of the Third Generation Partnership Project, 3GPP)) proposed specifications for the LTE-Advanced system (version 10- 14 3GPP).

LTE successor systems are also being developed (for example, the fifth generation mobile communication system (5G, 5G +), the New Radio System (English New Radio, NR), the 3GPP version 15 system and later, etc.).

In existing LTE systems (e.g., 3GPP version 8-14 systems), a user terminal (User Equipment, UE) transmits uplink control information (UCI) using at least one of the uplink data channel (e.g., , a Physical Uplink Shared Channel (PUSCH) and an uplink control channel (for example, a Physical Uplink Control Channel (PUCCH)).

List of Cited Materials

Non-Patent Documents

Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)," April, 2010.

The essence of the invention

Technical task

In future radio communication systems (hereinafter referred to as NR), it is assumed that a value (also referred to as a HARQ-ACK slot value or the like) for indicating a transmission time interval of acknowledgment information (also referred to as a Hybrid Automatic Repeat acknowledgment reQuest-ACKnowledgement, HARQ-ACK), acknowledgment/non-acknowledgment (ACKnowledgement/Non-ACKnowledgement, ACK/NACK), A/N signal, or the like) for a downstream signal (eg, PDSCH) is defined for a user terminal (UE ) using at least one of the upper layer parameter and downlink control information (DCI).

For NR, the following is learned: the UE determines a codebook containing the specific HARQ-ACK bit(s) (also referred to as a HARQ-ACK codebook, HARQ codebook, or the like) based on the HARQ-ACK slot value(s), and retransmits this codebook to the base station. Accordingly, it is desirable for the UE to be able to properly control at least one of codebook detection and response.

In light of the above, the present invention has as one object a proposal for a user terminal and a radio communication method capable of properly controlling at least one of determining and responding to a HARQ-ACK codebook.

The solution of the problem

A user terminal in accordance with one aspect of the present invention comprises: a control section configured to determine a plurality of one or more likely intervals for receiving a downlink common channel available in a time element based on a hybrid automatic repeat request (HARQ-) acknowledgment time interval value. ACK) using a time element shorter than the slot and the format of the specified time element; and a transmission section configured to transmit a codebook determined based on said set of one or more candidate intervals. In one preferred embodiment, the control section is configured to determine said set of one or more candidate intervals based on the allocation of the time domain resource for each time element in the slot. In one of the preferred embodiments, the control section is configured to determine which time element in the slot each of the one or more candidate intervals belongs to, based on each time domain resource location in the specified slot, based on the position of the start symbol or the last symbol of each of the one or more possible intervals. In one preferred embodiment, the time domain resource allocation for each time element is defined in a table containing a row in which the row index and at least one of the slot offset value, start character index, time duration, and display type are related. In one of the preferred embodiments, said time element is configured for the user terminal using system information or a radio resource control (RRC) layer parameter specific to the user terminal. A radio communication method for a user terminal in accordance with yet another aspect of the present invention comprises the steps of determining a set of one or more likely slots for receiving a downlink common channel available in a time element based on a hybrid automatic repeat request (HARQ) acknowledgment slot value -ACK) using a time element shorter than the slot and the format of the specified time element; and transmitting a codebook determined based on said set of one or more candidate intervals. A terminal according to another aspect of the present invention comprises: a receiving section, configured to receive a Radio Resource Control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval of a subslot unit; and a control section configured to control, based on the specified RRC layer parameter, to transmit in the slot a plurality of uplink control channels (PUCCHs) for HARQ-ACK per subslot unit. In one of the preferred embodiments, the terminal further comprises a transmission section configured to transmit capability information indicating support for the fractional value of the HARQ-ACK timeslot value of one subslot. In one of the preferred embodiments, the RRC level parameter indicates a 2-symbol or 7-symbol fraction. A radio communication method for a terminal according to another aspect of the present invention comprises receiving a radio resource control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval of a subslot unit; and controlling, based on the specified RRC layer parameter, to transmit in the slot a plurality of uplink control channels (PUCCHs) for HARQ-ACK per subslot unit. A base station according to another aspect of the present invention comprises a transmission section configured to transmit a Radio Resource Control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval of a subslot unit; and a control section configured to control, based on the specified RRC layer parameter, to receive a plurality of uplink control channels (PUCCHs) for HARQ-ACK per slot unit. A system in accordance with yet another aspect of the present invention comprises a terminal and a base station, the terminal comprising: a receiving section configured to receive a radio resource control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval subslot units; and a control section configured to control, based on the specified RRC layer parameter, to transmit in the slot a plurality of uplink control channels (PUCCHs) for HARQ-ACK per subslot unit; and the base station comprises: a transmission section configured to transmit the specified RRC layer parameter.

Beneficial Effects of the Invention

According to one aspect of the present invention, at least one of HARQ-ACK codebook detection and response can be properly controlled.

Brief description of the drawings

Each of the FIGS. 1A-1C is a diagram illustrating an example of a slot-level HARQ-ACK slot value.

Fig. 2 is a diagram of a first example of a slot-level semi-static codebook determination operation.

Fig. 3 is a diagram of a second example of a slot-level semi-static codebook determination operation.

Fig. 4 is a diagram of a third example of a slot-level semi-static codebook determination operation.

Each of the FIGS. 5A and 5B is a diagram illustrating an example of the HARQ-ACK slot value at the subslot level according to the first aspect.

Each of the FIGS. 6A-6C are a diagram illustrating an example of a PDSCH time domain resource allocation table subtable according to the first aspect.

Fig. 7 is a diagram of a first example of a sub-slot level semi-static codebook determination operation according to the first aspect.

Fig. 8 is a diagram of a second example of a sub-slot level semi-static codebook determination operation according to the first aspect.

Fig. 9 is a diagram of a third example of a sub-slot level semi-static codebook determination operation according to the first aspect.

Fig. 10 is a diagram of an example of a slot according to the precondition of the second aspect.

Fig. 11 is a diagram of an example operation of determining a semi-static HARQ-ACK codebook at the slot level according to the first method of the second aspect.

Fig. 12 is a diagram of an example operation of determining a semi-static HARQ-ACK codebook at the subslot level according to the first method of the second aspect.

Each of the FIGS. 13A and 13B is a diagram illustrating an example of a PDSCH time domain resource allocation table for each service according to the second method of the second aspect.

Fig. 14 is a diagram of an example of a plurality of possible PDSCH reception intervals for each service determined based on the slot level HARQ-ACK slot value K ₁ according to the second method of the second aspect.

Fig. 15 is a diagram of an example operation of determining the semi-static HARQ-ACK codebook at the slot level according to the second method of the second aspect.

Fig. 16 is a diagram of an example of a plurality of possible PDSCH reception intervals for each service determined based on the HARQ-ACK slot value K ₁ at the subslot level.

Fig. 17 is a diagram of an example operation of determining a semi-static HARQ-ACK codebook at the subslot level according to the second method of the second aspect.

Fig. 18 is a diagram of an example of a plurality of possible PDSCH reception intervals for each service according to the third method of the second aspect.

Fig. 19 is a diagram of an example of an eMBV HARQ-ACK semi-static codebook determination operation according to the third method of the second aspect.

Fig. 20 is a diagram of an operation example of determining a semi-static HARQ-ACK codebook for URLLC according to the third method of the second aspect.

Fig. 21 is a diagram of an example of a common HARQ-ACK codebook according to option 1 of the second aspect.

Fig. 22 is a diagram of another example of a common HARQ-ACK codebook according to option 1 of the second aspect.

Fig. 23 represents an example of a generalized configuration of a radio communication system in accordance with one implementation.

Fig. 24 shows an example of a base station configuration according to one implementation.

Fig. 25 shows an example of a user terminal configuration according to one implementation.

Fig. 26 shows an example of a hardware configuration of a base station and a user terminal according to one implementation.

Implementation of the invention

For NR, the following method is being studied: the user terminal (UE) responds (also referred to as a message, transmission, or the like) of transmission acknowledgment information (also referred to as a hybrid automatic repeat request (HARQ-ACK) acknowledgment) with an ACKnowledge/Non-ACK signal. (ACK/NACK), HARQ-ACK information, A/N signal, or the like) for a downlink common channel (also called a physical downlink common channel (PDSCH) or the like).

For example, in NR, the HARQ-ACK response time slot for the PDSCH is indicated by the value of a certain field in the DCI (eg, DCI format 1_0 or 1_1) used for PDSCH scheduling. When the UE uses slot #n+k to transmit the HARQ-ACK for the PDSCH received in slot #n, the value of this particular field may be mapped to the value of k.

This specific field is called, for example, a PDSCH-HARQ Response Time Slot Indication Field (PDSCH to HARQ Response Time Slot Indicator) or the like.

In NR, the PUCCH resource to be used for the PDSCH HARQ-ACK response is determined based on the value of the specified defined field in the DCI (eg, DCI format 1_0 or 1_1) used for PDSCH scheduling. This specific field may be called, for example, a PUCCH Resource Indicator (PRI) field, an ACK/NACK Resource Indicator (ARI) field, or the like. The value of said specific field may be referred to as PRI, ARI, or the like.

The PUCCH resource mapped to each value of the specified specific field may be set for the UE in advance using an upper layer parameter (eg, ResourceList in PUCCH-ResourceSet). The indicated PUCCH resource may be set for the UE for each set (PUCCH resource set) containing one or more PUCCH resources.

For NR, the following is being studied: the possibility for a UE to transmit one or more uplink control channels (Physical Uplink Control Channels (PUCCH)) for HARQ-ACK in one slot.

In NR, one or more HARQ-ACK signals are mapped to a HARQ-ACK codebook, and that HARQ-ACK codebook may be transmitted on a PUCCH resource indicated by a specific DCI (eg, the latest (latest) DCI).

Wherein, the HARQ-ACK codebook may comprise the bit(s) for the HARQ-ACK in an element of at least one of time domain (e.g., slot), frequency domain (e.g., elementary carrier (C)), spatial domain ( for example, at the level), a transport block (English Transport Block, TV) and a group of coding blocks (English Code Block Group, CBG)), forming a transport block. It should be noted that the ES is also called a cell, a serving cell, a carrier cell, or the like. The specified bit is also called a HARQ-ACK bit, HARQ-ACK information, HARQ-ACK information bit, or the like.

The HARQ-ACK codebook is also referred to as PDSCH-HARQ-ACK codebook (pdsch-HARQ-ACK-Codebook), codebook, HARQ codebook, HARQ-ACK size or the like.

The number of bits (size) included in the HARQ-ACK codebook and the like may be determined semi-statically or dynamically. A HARQ-ACK codebook whose size is determined semi-statically is also referred to as a semi-static HARQ-ACK codebook, type 1 HARQ-ACK codebook, semi-static codebook, or the like. A HARQ-ACK codebook whose size is determined dynamically is also called dynamic HARQ-ACK codebook, type 2 HARQ-ACK codebook, dynamic codebook, or the like.

For the UE, the use of a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook may be specified using an upper layer parameter (eg, pdsch-HARQ-ACK-Codebook).

In the case of a semi-static HARQ-ACK codebook, the UE may respond with HARQ-ACK bits corresponding to a specific band, regardless of whether the PDSCH is scheduled in that specific band. This defined range is also referred to as a HARQ-ACK window, a HARQ-ACK grouping window, a HARQ-ACK reply window, a grouping window, a reply window, or the like.

<Slot level semi-static codebook determination operation>

The slot-level semi-static HARQ-ACK codebook may be determined based on at least one of the following parameters a)-d):

a) a value K ₁ indicating a HARQ-ACK slot (HARQ-ACK slot value);

b) a table (PDSCH time domain resource allocation table) used to determine the time domain resource allocated to the PDSCH;

c) if the downlink and uplink are set to different subcarrier spacings, the second power of the difference (μ _DL - μ _UL ) between the downlink (or downlink BWP) subcarrier spacing target μ _DL and the uplink subcarrier spacing target μ _UL (or in ascending BWP);

d) a cell-specific up/down allocation configuration when using TDD (eg, TDD-UL-DL-ConfigurationCommon) and a slot-specific configuration (eg, TDD-UL-DL-ConfigDedicated) that takes precedence over the specified cell-specific uplink/downlink distribution configuration when using TDD;

More specifically, the UE, based on the specified at least one parameter, can determine the set M _A , _from the likely PDSCH reception intervals in which transmission of HARQ-ACK bits is possible in the PUCCH transmitted in slot n in the serving cell c (or on the active downlink BWP and uplink BWP of serving cell c). For example, the UE may determine the set of candidate intervals M _{A, from} receiving the PDSCH according to the following steps 1) and 2).

Step 1)

The UE determines the HARQ-ACK window based on the HARQ-ACK slot value K ₁ at the slot level. For example, in FIG. 1A, slot #nK ₁ (K ₁ =2, 3, 4) is defined as the HARQ-ACK window for the HARQ-ACK bits transmitted in slot #n. It can also be said that the HARQ-ACK window is the power of the set C (K ₁ ) of values K ₁ of the HARQ-ACK slot. For example, in FIG. 1A C (K ₁ )={7, 6, 5}.

Note that C(K ₁ ) containing one or more HARQ-ACK slot values K ₁ may be determined based on at least one of a specific field value in the DCI and an upper layer parameter (e.g., dl-DataToUL-ACK) .

Step 2)

The UE may determine likely intervals M _A , _with PDSCH reception in each slot for each HARQ-ACK slot value K ₁ of C (K ₁ ). The UE may determine the semi-static HARQ-ACK codebook to be transmitted in slot #n by repeating the following steps 2-1) and 2-2) for each HARQ-ACK slot value K ₁ of C (K ₁ ).

Step 2-1)

The UE may determine the available candidate slots _MA since receiving the PDSCH in slot #nK ₁ , based on at least one of the PDSCH time domain resource allocation table and slot format #nK ₁ corresponding to the HARQ-ACK slot value K ₁ . A PDSCH reception likely interval may be a period representing one or more PDSCH reception opportunities (also referred to as an interval, a likely interval, or the like).

More specifically, the UE may determine the likely slots _MA , _from receiving the PDSCH of slot #nK ₁ based on the PDSCH time domain resource allocation table, and then, based on the format of slot #nK ₁ , may consider at least a portion of the likely slots _{MA, from} receiving the PDSCH to be unavailable. and exclude this part (or based on the slot format #nK ₁ may consider at least a part of the possible intervals M _{A, from} receiving PDSCH available and select the specified part).

Note that slot format #nK ₁ may be determined based on at least one of the cell-specific uplink/downlink allocation configuration when using TDD (e.g., TDD-UL-DL-ConfigurationCommori described above), slot-specific uplink/downlink allocation configuration. downstream when using TDD (eg TDD-UL-DL-ConfigDedicated) and specified DCI.

Step 2-2)

The UE assigns indices to the candidate intervals M _A , _from the reception of the PDSCH determined in step 2-1). To a plurality of candidate PDSCH reception intervals _MA, with at least some of the symbols overlapping, the UE may assign the same index (value), and may generate HARQ-ACK bits for each index (value) of PDSCH candidate intervals.

Next, with reference to FIG. 1B, 1C, and 2-4 illustrate an example of determining a static HARQ-ACK codebook when the set C (K ₁ ) of HARQ-ACK slot values K ₁ contains the values 7, 6, and 5 (see FIG. 1A).

Fig. 1B shows an example of a PDSCH time domain resource allocation table. As shown in FIG. 1B, in the PDSCH time domain resource allocation table, a row index (RI) may be associated, for example, with at least one of the offset K ₀ , the index S of the start symbol into which the specified PDSCH is allocated, the number L of symbols, allocated to the PDSCH (arrangement length), and the mapping type of the indicated PDSCH. Each row of the PDSCH time domain resource allocation table may indicate a PDSCH time domain resource allocation (ie, a likely PDSCH reception interval) for the specified PDSCH.

Fig. 1C shows an example of possible PDSCH reception slots M _{A s} determined based on the PDSCH time domain resource allocation table shown in FIG. 1B. For example, for a row index RI=0 in the PDSCH time domain resource allocation table shown in FIG. 1B, K ₀ =0, S=2 and L=4. Thus, among the possible PDSCH reception intervals determined based on RI=0, there are four symbols starting from symbol #2 of slot #nK ₁ (ie, symbols #2-#5). Similarly, in FIG. 1C shows probable PDSCH reception intervals determined based on RI=1-8.

<<The case in which K ₁ =7>>

Fig. 2 represents the case where slot #nK ₁ has a format in which all symbols are descending symbols (D). In slot #nK ₁ in which all symbols are downstream symbols (eg, in slot #n-7 in FIG. 1A), the UE may use all possible slots M _A , _from PDSCH reception determined based on each of RI=0-8 .

Accordingly, as shown in FIG. 2, all PDSCH _receiving candidate slots _MA , determined based on each of RI=0-8, are selected, and indexes (IDs or IDs) are assigned to the selected _{PDSCH receiving} candidate slots MA. Here, a plurality of candidate intervals _{MA, from} the reception of the PDSCH, in which at least some of the symbols overlap (collide), may be assigned the same index.

For example, in FIG. 2, some of the symbols of the three PDSCH candidate slots M _{A ,} determined based on RI=0, 3, and 4 overlap, whereby these PDSCH _receiver candidate slots M _A , are assigned the same index 0. Similarly, some of the symbols of the two _PDSCH candidate MA slots determined based on RI=2 and 7 overlap, whereby these PDSCH receiver _candidate MA slots are assigned the same index 3.

Among the candidate intervals _{MA, from} the reception of the PDSCH in slot #nK _1, are the candidate intervals of the PDSCH reception, which are given different indexes (values) 0-4. The UE may generate a certain number of HARQ-ACK bits (eg, 1 bit) for likely PDSCH reception intervals with each index.

For example, in FIG. 2 shows that one UE may use the likely PDSCH reception intervals M _{A, s} in slot #nK ₁ and thus may form a semi-static HARQ-ACK codebook containing HARQ-ACK bits of 5 bits.

<<The case in which K ₁ =6>>

Fig. 3 represents the case where slot #nK ₁ has a format that has descending symbols (D), ascending symbols (U), and guard periods (G). For example, in FIG. 3, symbols #0-#9 of slot #nK ₁ (eg, slot #n-5 of FIG. 1A) are down symbols, symbols #12 and #13 are up symbols, and symbols #10 and #11 are guard periods.

In the case shown in FIG. 3, PDSCH candidate slots containing uplink symbols #12 and #13 (eg, PDSCH candidate slots determined based on RI=2, 3, and 8) cannot be used in slot #nK ₁ . The reason for this is that the UE cannot receive the PDSCH on uplink symbols #12 and #13.

Accordingly, as shown in FIG. 3, all PDSCH _reception candidate intervals M _A determined based on each of RI=0, 1, and 4-7, except for PDSCH reception candidate intervals determined based on RI=2, 3, and 8, and the selected candidate intervals M _{A , indexes (identifiers or IDs) are assigned upon} receipt of the PDSCH.

Note that these indexes may be assigned using sequence numbers in the set C (K ₁ ) of values K ₁ of the HARQ-ACK slot. For example, as described with reference to FIG. 2, in the case of K ₁ =7 _{, the likely slots M A from} the reception of the PDSCH in slot #nK ₁ may be assigned indices 0-4. For this reason, in the case of K ₁ =6 shown in FIG. 3, candidate slots _{MA, from} the reception of the PDSCH in slot #nK ₁ , may be assigned consecutive indexes 5-8.

As stated above, a set of candidate slots M _{A from} receiving the PDSCH in which at least some of the symbols overlap (collide) may be assigned the same index. For example, in FIG. 3, some of the symbols of two PDSCH candidate slots M _{A ,} determined based on RI=0 and 4, overlap, whereby the indicated PDSCH receiver candidate slots M _{A ,} are assigned the same index 5. Similarly, the same index 6 is assigned to two probable intervals M _{A, from} PDSCH reception, determined based on RI=1 and 5.

Thus, at the UE, _a certain number _{( e.g.} , 9) of HARQ-ACK bits _{corresponding} possible PDSCH reception intervals, denoted by different indexes (values) 0-8.

<<The case in which K ₁ =5>>

Fig. 4 represents the case where slot #nK ₁ has a format in which all symbols are ascending symbols (U). An example for the case in Fig. 4 is slot #nK ₁ in which symbols #0-#13 are all ascending symbols (eg, slot #n-5 in FIG. 1A).

In the case shown in FIG. 4, none of the candidate PDSCH reception intervals determined based on RI=0-8 can be used in slot #nK ₁ . Accordingly, as shown in FIG. 4, the available candidate PDSCH reception slots in slot #nK ₁ need not be selected. In this case, the HARQ-ACK bits corresponding to slot #nK ₁ (K ₁ =5) shown in FIG. 4 should not be included in the semi-static HARQ-ACK codebook corresponding to C(K ₁ )=7, 6, 5.

As stated above, the following is learned: A semi-static HARQ-ACK codebook is determined based on the slot-level HARQ-ACK slot value K ₁ . On the other hand, NR is also studying the following: in order to meet the requirements of a service that provides very high reliability and low latency (for example, Ultra Reliable and Low Latency Communications (URLC) services), it is supported (introduced ) HARQ-ACK slot value K ₁ using a time element shorter than (less than) the slot.

However, when introducing support for the HARQ-ACK time slot value K ₁ using a time element shorter than the slot, the question arises of how to define (configure (build) or generate) a semi-static HARQ-ACK codebook. In light of this, the present inventors investigated a method for properly determining a semi-static HARQ-ACK codebook based on the HARQ-ACK slot value K ₁ using a time element shorter than a slot (first aspect), and thus arrived at the present invention.

In NR, it is also assumed that the UE supports multiple services with different requirements (eg, URLLC service and high-speed, high-capacity service (eg, enhanced Mobile Broad Band, eMBB) service).

However, with one UE supporting a plurality of services, the question arises of how to manage at least one of the determination (configuration or generation) and the response transmission of a semi-static HARQ-ACK codebook. In light of this, the present inventors have investigated a method in which a UE supporting a plurality of services properly manages at least one of the detection and response of a semi-static HARQ-ACK codebook (second aspect), and thus arrived at the present invention.

Next, with reference to the drawings, implementations of the present invention are described in detail.

Note that the following description assumes that one transport block (TB) (also referred to as a Code Word (CW)) or the like is transmitted on one PDSCH. However, this implementation can also be applied to the case where multiple TBs are transmitted on one PDSCH if necessary.

The following description assumes a case in which one HARQ-ACK bit is generated for one TV. However, this implementation can also be applied to the case in which, if necessary, one HARQ-ACK bit is generated for one Code Block Group (CBG). One TV is divided (segmented) into one or more coding blocks (Code Blocks, CB). One TV may contain one or more CBGs, and one CBG may contain one or more CBs.

(First aspect)

Next, the definition of a semi-static codebook based on the HARQ-ACK slot value at the time element level shorter than a slot will be described.

The first aspect refers to the case where, for example, the UE supports a particular service (eg, URLLC service) and does not support other services (eg, eMBV service). However, the present invention is not limited to this case. The first aspect may also apply to a case in which the UE supports both services but does not activate a service (eg, eMBV service) other than a specific service (eg, URLLC services), to a case in which a plurality of different services are served on a common radio interface, and so on.

<Precondition>

In a first aspect, the UE supports a HARQ-ACK slot value K ₁ defined using a time element shorter than a slot (an element that contains a number of symbols less than the number of symbols in a slot). The specified time slot may be referred to as a half-slot, sub-slot, mini-slot, or the like, and may contain a certain number of symbols (eg, two, three, four, or seven symbols).

Fig. 5A shows an example of a temporary element shorter than a slot. As shown in FIG. 5A, a half-slot may contain 7 symbols, and two half-slots may be contained in one slot. Note that a half-slot may alternatively be referred to as a sub-slot of seven symbols.

A subslot may contain three or four symbols, and one slot may contain four subslots. Alternatively, a subslot may contain two symbols, and one slot may contain seven subslots. Note that a half-slot may be referred to as a sub-slot of seven symbols.

The granularity of the HARQ-ACK slot value K ₁ (e.g., any of the slot of FIG. granularity) using at least one of the upper layer parameter and DCI. For example, the UE may determine the fractionality of the HARQ-ACK slot value K ₁ based on (1) SIB or (2) UE-specific RRC level parameter (RRC-individual).

(1) Case using SIB

For example, the fractionality of the HARQ-ACK slot value K1 may be specified using a specific parameter in the SIB. In this case, a UE that does not support a fraction of the HARQ-ACK slot value K ₁ shorter than a slot (i.e., a UE that only supports the slot-level HARQ-ACK slot value K ₁ ) cannot access the cell in which the this SIB.

In initial access, the resources (Physical Random Access Channel (PRACH) resources) for the random access channel (PRACH resources) can be classified based on the fractional value K ₁ of the HARQ-ACK slot.

For example, a UE that supports the HARQ-ACK slot value K ₁ only at the slot level and a UE that supports the HARQ-ACK slot value K ₁ with a time element shorter than the slot may use different sets for the PRACH resources.

Thus, using the PRACH resource division, the base station before transmitting the HARQ-ACK (initial HARQ-ACK) for the contention resolution message (message 4) in the random access operation is able to determine whether the given UE supports the HARQ-ACK slot value K ₁ with a temporary element shorter than a slot (for example, a half-slot or a sub-slot).

(2) Case using individual RRC

Alternatively, the granularity of the HARQ-ACK slot value K ₁ may be set using a UE-specific RRC level parameter. In this case, the UE may send to the base station information (capacity information) indicating that the UE supports the HARQ-ACK time interval value K ₁ shorter than a slot.

The UE may receive from the base station information indicating the fractionality of the HARQ-ACK slot value K ₁ (eg, anything from a half-slot, a three/four symbol sub-slot, a two-symbol sub-slot, or the like), and a value of K may be set. ₁ HARQ-ACK timeslot is shorter than a slot.

Fig. 5B shows an example of a HARQ-ACK slot value K ₁ with a fraction shorter than a slot. In FIG. 5B, the fraction is a subslot of seven symbols (halfslot). However, the present invention is not limited to this. The fraction may be represented, for example, as above, by a three/four symbol subslot or a two symbol subslot.

It should be noted that in the following description, "subslot" generically means a subslot of seven symbols (half-slot), a subslot of three/four symbols, or a subslot of two symbols.

In FIG. 5B, the set C(K ₁ ) of HARQ-ACK slot values K ₁ at the subslot level contains the values 3, 2, and 1. As shown in FIG. 5B, when the HARQ-ACK is transmitted using the PUCCH of subslot #n, the HARQ-ACK window may include subslot #nK ₁ (K ₁ =3, 2, 1).

With the above granularity of the HARQ-ACK time slot value K ₁ less than a slot, it is possible to transmit multiple PUCCHs for a HARQ-ACK in one slot.

In a first aspect, operation at the subslot level may apply not only to the HARQ-ACK slot value K ₁ but also to at least one of the following:

- fractional value K ₂ time interval for PUSCH transmission (slot offset relative to the uplink grant);

- a table used to determine the time domain resource allocated for PUSCH (the PUSCH time domain resource allocation table);

- HARQ-ACK codebook configuration;

- repetition of PDSCH or PUSCH;

is the number of PDCCH blind decoding events or the number of Control Channel Elements (CCE) forming the PDCCH.

For example, at least one of the start symbol S in the PUSCH time domain resource allocation table, the time duration L, and the specified start and time duration identifier SLIV may be defined to indicate a time element shorter than a slot (eg, a half-slot or a sub-slot). For example, the length of a subslot can be represented by the value L _max (eg 7), and if (L - 1)<=Floor(L _max /2) or (L - 1)>=Ceil(L _max /2), then SLIV can be set according to the expression L _max (L - 1)+S; otherwise, SLIV may be given by L _max (L _max - L+14)+(14 - 1 - S). The terminal may determine the start symbol S and time duration L of the specified PUSCH in the subslot based on the predetermined subslot length _Lmax and the SLIV value.

Further, up to one HARQ-ACK codebook may be defined per subslot (ie, more than one HARQ-ACK codebook may be defined for one slot).

The repetition of the PDSCH or PUSCH may be indicated with an indication of the subslot. For example, the PDSCH or PUSCH may be transmitted multiple times using the same time domain resource allocation on multiple subslots.

The number of PDCCH blind decoding events or the number of CCEs forming a PDCCH may be counted with indication of a subslot.

<Subslot-level HARQ-ACK semi-static codebook determination operation>

In a first aspect, determining a semi-static HARQ-ACK codebook based on the fractionality of the HARQ-ACK slot value K ₁ at the subslot level is described.

In the first aspect, when the UE determines the semi-static HARQ-ACK codebook based on the sub-slot level HARQ-ACK slot value K ₁ , the UE may use at least one of the above parameters a) to d) similar to the case where the UE determines the semi-static codebook a HARQ-ACK book based on the slot-level HARQ-ACK slot value K ₁ . The UE may determine a plurality of possible PDSCH reception intervals M _{A, c} according to the following steps 1)-3).

Step 1)

The UE determines the HARQ-ACK window based on the HARQ-ACK slot value K ₁ at the subslot level. For example, in FIG. 5B, as the HARQ-ACK window for the HARQ-ACK bits transmitted in subslot #n, subslots #n-3, #n-2, and #n-1 are defined. It can also be said that the HARQ-ACK window is the power of the set C(QoS of HARQ-ACK slot values K ₁ . For example, in FIG. 5B, C(K ₁ )={3, 2, 1}.

Step 2)

The PDSCH time domain resource allocation table (see FIG. 1B) may be divided into a plurality of sub-tables based on the granularity of the HARQ-ACK slot value K ₁ . The number of subtables may be determined based on a slot period (number of symbols per slot) and a period corresponding to a fractional value of K ₁ of the HARQ-ACK slot (number of symbols per subslot). For example, the number of subtables may be the value obtained by rounding down or up the result of dividing the number of characters in the slot by the number of characters in the subslot.

For example, when the fraction of the HARQ-ACK slot value K ₁ is a sub-slot of seven symbols (half-slot), the PDSCH time domain resource allocation table may be divided into two sub-tables. When the fraction of the HARQ-ACK slot value K ₁ is a subslot of three or four symbols, the PDSCH time domain resource allocation table may be divided into four sub-tables. When the fraction of the HARQ-ACK slot value K ₁ is a subslot of two symbols, the PDSCH time domain resource allocation table may be divided into seven sub-tables.

Thus, each subslot in a slot and each subslot in the PDSCH time domain resource allocation table can correspond to each other in a one-to-one relationship.

Which subtable (which subslot) each row shown in the PDSCH time domain resource allocation table (see FIG. 1B) belongs to (or the likely PDSCH reception interval indicated by each row) can be determined based on a known rule. For example, the UE may determine which subtable each of the candidate PDSCH reception intervals belongs to based on at least one of the following:

- start symbol of the probable PDSCH reception interval;

- the last symbol of the probable PDSCH reception interval;

- a time element containing more symbols in a probable PDSCH reception period (when the probable PDSCH reception interval spans a plurality of time elements (eg, a plurality of half-slots or sub-slots) in a slot).

It should be appreciated that when the start and end symbols of one PDSCH candidate receive interval span multiple subslots, the PDSCH candidate receive interval may belong to the subslot set (or the subtable set corresponding to the subslot set), or may belong to any one subslot of the subslot set (or the subslot set). subtables). More specifically, a line indicating one likely PDSCH reception interval may be contained in each sub-table of the plurality of sub-tables, or may be contained in only any one of these sub-tables.

Step 3)

The UE may determine probable intervals _{MA, with} PDSCH reception in a subslot for each HARQ-ACK slot value K ₁ of C (K ₁ ). The UE may determine the static HARQ-ACK codebook to be transmitted in subslot #n by repeating the following steps 3-1) and 3-2) for each HARQ-ACK slot value K ₁ of C (K ₁ ).

Step 3-1)

The UE may determine the available candidate slots M _{A, from} receiving the PDSCH in subslot #nK ₁ based on at least one of the sub-tables obtained by dividing the PDSCH time domain resource allocation table and the sub-slot format #nK ₁ corresponding to the value K ₁ of the HARQ-slot. ack.

More specifically, the UE may, based on the format of the #nK ₁ subslot, consider at least a portion of the intervals _{MA, from} the reception of the PDSCHs, belonging to the subtable corresponding to the subslot #nK ₁ , to be unavailable, and exclude the specified part, (or, based on the format of the subslot #nK _{1 ,} may consider at least a portion of the likely intervals M _{A, from} the reception of the PDSCH available and select the specified portion).

Note that the subslot format #nK ₁ may be determined based on at least one of the cell-specific uplink/downlink allocation configuration when using TDD (e.g., the TDD-UL-DL-ConfigurationCommori described above), the slot-specific uplink/downlink allocation configuration. downstream when using TDD (eg TDD-UL-DL-ConfigDedicated) and specified DCI.

Step 3-2)

The UE assigns indices to the likely intervals M _{A, from} the reception of the PDSCH determined in step 3-1). To the set of candidate PDSCH reception intervals M _{A ,} for which at least some of the symbols overlap, the UE may assign the same index (value), and may generate HARQ-ACK bits for each index (value) of PDSCH candidate intervals.

Next, with reference to FIG. 6A-6C and 7-9 illustrate an example of determining a static HARQ-ACK codebook in the case where the set C (K ₁ ) of HARQ-ACK slot values K ₁ at the sub-slot level contains the values 3, 2, and 1 (see FIG. 5B). ).

Fig. 6A shows an example of probable intervals M _{A , from} PDSCH reception in a certain slot, determined based on the PDSCH time domain resource allocation table shown in FIG. 1B. As an example, in FIG. 6A shows the likely PDSCH reception intervals determined based on rows with RI=0-8 of the PDSCH time domain resource allocation table shown in FIG. 1B.

Thus, the PDSCH time domain resource allocation table shown in FIG. 1B can be divided into a plurality of sub-tables according to a certain rule. For example, for the case in Fig. 6B and 6C, which sub-table the PDSCH receive interval likely belongs to is determined based on which half-slot the last symbol of the PDSCH receive interval belongs to.

As shown in FIG. 6B, the last symbol of the likely PDSCH reception intervals determined based on the rows with RI=0 and 4 in the PDSCH time domain resource allocation table shown in FIG. 1B belongs to subslot #nK ₁ (K ₁ =3), and thus rows with RI=0 and 4 are included in subtable 1, which corresponds to subslot #nK ₁ (K ₁ =3). Note that the rows with RI=0 and 1 in FIG. 6B correspond to rows with RI=0 and 4 in FIG. 1B.

As shown in FIG. 6C, the last symbol of the likely PDSCH reception intervals determined based on the rows with RI=1-3 and 5-8 in the PDSCH time domain resource allocation table shown in FIG. 1B belongs to subslot #nK ₁ (K ₁ =2), and thus rows with RI=1-3 and 5-8 are included in subtable 2, which corresponds to subslot #nK ₁ (K ₁ =2). Note that the lines with RI=0-2 and 3-6 in FIG. 6C correspond to lines with RI=1-3 and 5-8 in FIG. 1B.

As shown in FIG. 6B and 6C, the RI in each sub-table may be newly assigned, or the same RI may be used in the sub-tables as in the PDSCH time domain resource allocation table shown in FIG. 1B. In the latter case, the plurality of rows in the PDSCH time domain resource allocation table shown in FIG. 1B may be grouped into subsets for each subslot without generating subtables.

<<The case in which K ₁ =3>>

Fig. 7 represents the case where subslot #nK ₁ has a format in which all symbols are descending symbols (D). In subslot #nK ₁ (eg, subslot #n-3 in FIG. 5B), the UE may use all possible PDSCH reception slots M _A , _s belonging to subtable 1 shown in the example in FIG. 6B.

Accordingly, as shown in FIG. 7, all possible PDSCH _reception intervals _MA , s determined based on each of RI=0 and 1 of sub-table 1 in FIG. 6B, and indexes (identifiers or IDs) are assigned to the selected candidate slots _{MA from} the reception of the PDSCH. Here, a plurality of candidate slots M _{A from} PDSCH reception in which at least some of the symbols overlap (collide) may be assigned the same index.

For example, in FIG. 7 overlaps some of the symbols of the two possible intervals M _{A, from} PDSCH reception determined based on RI=0 and 1 of sub-table 1 in FIG. 6B and, accordingly, the same index 0 is assigned to these probable intervals M _{A from} the reception of the PDSCH.

For candidate PDSCH reception intervals with each index belonging to subslot #nK ₁ , a certain number of HARQ-ACK bits (eg, 1 bit) may be generated. For example, in FIG. 7 shows that one UE can generate a semi-static HARQ-ACK codebook containing a certain number of HARQ-ACK bits corresponding to one probable interval M _{A from} PDSCH reception in subslot #nK ₁ .

<<The case in which K ₁ =2>>

Fig. 8 represents a case in which subslot #nK ₁ has a format containing descending symbols (D), ascending symbols (U), and guard periods (G). In subslot #nK ₁ (eg, subslot #n-2 in FIG. 5B), the UE may use all candidate PDSCH _reception slots _MAc belonging to subtable 2 shown in the example in FIG. 6C.

In the case of FIG. 8, PDSCH candidate slots containing uplink symbols (eg, PDSCH candidate slots determined based on RI=1, 2, and 6 of subtable 2 in FIG. 6C) cannot be used in subslot #nK ₁ . The reason for this is that the UE cannot receive the PDSCH in the uplink symbols.

Accordingly, as shown in FIG. 8, all PDSCH _reception candidate intervals MA _c determined based on each of RI=0 and 3-5 except for PDSCH reception candidate intervals determined based on RI=1, 2 and 6 of sub-table 2 in FIG. 6C, and indexes (identifiers or IDs) are assigned to the selected candidate intervals M _{A from} the reception of the PDSCH.

Note that these indexes may be assigned using sequence numbers in the set C (K ₁ ) of values K ₁ of the HARQ-ACK slot. For example, as described with reference to FIG. 7, in the case of K ₁ =3, the likely slots M _{A from} receiving the PDSCH in subslot #nK ₁ are assigned an index of 0. For this reason, in the case of K ₁ =2 shown in FIG. 8, candidate intervals M _{A from} PDSCH reception in subslot #nK ₁ may be assigned consecutive indexes 1-3.

As stated above, a set of candidate slots M _{A from} receiving the PDSCH in which at least some of the symbols overlap (collide) may be assigned the same index. For example, in FIG. 8 overlaps some of the symbols of the two possible intervals M _{A, from} PDSCH reception determined based on RI=0 and 3 of sub-table 2 in FIG. 6C, and accordingly, these probable intervals M _{A, from} the reception of the PDSCH are assigned the same index 1.

Thus, at the UE, a certain number of HARQ-ACK bits (e.g., 4 bits) may be included in the semi-static HARQ-ACK codebook corresponding to likely intervals M _{A from} PDSCH reception in subslot #nK ₁ (K ₁ =3, 2) , corresponding to the likely intervals of receiving PDSCH, indicated by different indexes (values) 0-3.

<<The case in which K ₁ =1>>

Fig. 9 represents the case where subslot #nK ₁ has a format in which all symbols are ascending symbols (U). In subslot #nK ₁ (eg, in subslot #n-1 in FIG. 5B), the UE cannot use all possible PDSCH reception intervals M _{A s} belonging to subtable 1 shown in the example in FIG. 6B.

Accordingly, as shown in FIG. 9, the available candidate PDSCH reception slots in subslot #nK ₁ need not be selected. In this case, the HARQ-ACK bits corresponding to subslot #nK ₁ (K ₁ =1) shown in FIG. 9 should not be included in the semi-static HARQ-ACK codebook corresponding to C(K ₁ )=3, 2, 1.

As mentioned above, in the first aspect, the likely PDSCH reception intervals indicated in the respective rows in the PDSCH time domain resource allocation table are grouped for each subslot based on the subslot level HARQ-ACK slot value K ₁ . Accordingly, the UE can appropriately determine the semi-static HARQ-ACK codebook based on the HARQ-ACK slot value K ₁ at the subslot level.

(second aspect)

The second aspect relates to a case in which the UE supports a plurality of services having different requirements (eg, both an eMBB service and a URLLC service). However, the present invention is not limited to this case.

<Precondition>

In a second aspect, the UE may support transmitting multiple PUCCHs for HARQ-ACKs in one slot.

In a second aspect, the UE may determine a service from a plurality of services (eg, an eMBB service and a URLLC service) according to a certain rule. For example, the UE may determine which service the traffic belongs to based on at least one of the following:

- DCI format;

- the value of a certain field in DCI;

- used in the radio network temporary identifier (Engl. Radio Network Temporary Identifier, RNTI), used for scrambling DCI cyclic redundancy code (Engl. Cyclic Redundancy Check, CRC);

- monitoring interval of the downlink control channel (Physical Downlink Control Channel (PDCCH)).

For example, if the DCI for PDSCH scheduling is CRC scrambled using the MCS-C-RNTI, then the UE may assume that the data transmitted on the PDSCH corresponds to the URLLC service.

Note that the following describes an example in which the UE, as a plurality of services having different requirements, supports the eMBW service and the URLLC service on the same carrier (which is also called a cell, elementary carrier, serving cell, or the like) or on the same BWP . However, the present invention is not limited to this example. Below a certain layer (eg, physical layer or the like), the UE may use different operations (eg, different semi-static HARQ-ACK codebook determination operations) based on the specified at least one parameter, without recognizing the type of service as such. .

Fig. 10 shows an example of a slot scheme according to the prerequisite of the second aspect. In the shown in FIG. 10, a plurality of PDSCHs corresponding to different services (eg, eMBV service and URLLC service) are scheduled in one slot. For example, in FIG. 10, PDSCH #0 corresponding to the eMBV service and PDSCH #1 and #2 related to the URLLC service are scheduled in one slot.

In FIG. 10 shows how a UE may transmit a plurality of PUCCHs in a corresponding plurality of PUCCH resources allocated in one slot. For example, in FIG. 10 shows the allocation of PUCCH resource #0 for URLLC corresponding to PDSCH #1, PUCCH resource #1 for URLLC corresponding to PDSCH #2, and PUCCH resource #2 for eMBB corresponding to PDSCH #0.

As shown in FIG. 10, the UE may consider that the resources in the PUCCH resource set corresponding to different services are mutually orthogonal (not overlapping or spread over different symbols) at least in the time domain.

Alternatively, when resources in a plurality of PUCCH resources corresponding to different services overlap in at least one of the time domain and frequency domain, the UE may refuse to use the PUCCH resource corresponding to a particular service (e.g., an eMBV service), or may multiplex the UCI ( eg, HARQ-ACK for an eMBV service) corresponding to a particular service in a PUCCH for another service (eg, for a URLLC service).

<Determination of the semi-static HARQ-ACK codebook for each service>

In a second aspect, the definition of a semi-static HARQ-ACK codebook for each service is described. More specifically, any of the first to fourth methods may be used.

<<First way>>

In the first method, the same granularity of the HARQ-ACK slot value K ₁ and the same PDSCH time domain resource allocation table can be used for multiple services (eg, eMBB service and URLLC service).

The granularity of the HARQ-ACK slot value K ₁ may be at the slot level or at the sub-slot level.

The UE may determine the HARQ-ACK window (set C (K ₁ ) of HARQ-ACK slot values K ₁ ) to be common to multiple services _. PDSCH such that it is common to multiple services based on the PDSCH Time Domain Resource Allocation Table and the format of the specific time element (eg, slot or subslot). Indexes may be assigned to each of the candidate PDSCH reception intervals in the HARQ-ACK window such that they are common to multiple services.

At the same time, the UE may generate (configure, define) semi-static HARQ-ACK codebooks for multiple services separately. The UE may determine the size of the semi-static HARQ-ACK codebook for each service based on the indices (their total number) that are assigned to each of the likely PDSCH reception intervals in the HARQ-ACK window so that they are common to multiple services.

The UE may transmit a semi-static HARQ-ACK codebook generated for each service using the PUCCH resource defined for each service. The PUCCH resource defined for each service may be included in one time element (eg, slot or subslot). In this case, the UE may transmit multiple PUCCHs in one slot.

The UE may determine the PUCCH resource based on the value of a certain field in the closest (most recent) DCI in the HARQ-ACK window for each service. This specific field may be called a PUCCH resource identifier field (PUCCH resource indicator/indicator (PRI)), an ACK/NACK resource identifier field (ACK/NACK resource indicator (ARI)), an ACK/NACK resource offset field (ARO), or the like. . The value of the specified specific field is also called PRI, ARI, ARO, or the like.

[Slot Level]

Fig. 11 is a diagram of an example operation of determining a semi-static HARQ-ACK codebook at the slot level according to the first method of the second aspect.

In the case of FIG. 11, the UE may determine a plurality of candidate slots M _{A, from} receiving the PDSCH in slot #nK ₁ for each HARQ-ACK slot value K ₁ according to the slot-level semi-static HARQ codebook determination operation (see, for example, FIGS. 1A-1C and 2-4).

In the case of FIG. 11, in the HARQ-ACK window (corresponding to the set C (K ₁ ) of values K ₁ ={7, 6, 5} of the HARQ-ACK slot), candidate slots M _A , _from the reception of the PDSCHs assigned indices 0-8, are available. Note that the method for assigning indexes 0-8 is the same as the method described with reference to FIG. 2-4.

For FIG. 11, it is assumed that the UE is not configured with retransmission control with CBG as an element and the number of layers equal to 1. In this case, both the HARQ-ACK codebook for URLLC and the HARQ-ACK codebook for eMBB may contain M _c (=9 ) bits, where M _c is a number equal to the number of possible intervals M _{A, from} the reception of the PDSCH in the HARQ-ACK window, having different indices.

For example, in FIG. 11 PDSCH #0 for eMBB is located in PDSCH receive candidate slot #0 containing symbols #0-#13 in slot #nK ₁ (K ₁ =7). PDSCHs #1 and #2 for URLLCs, respectively, are placed in candidate PDSCH reception slots #5 and #6 containing symbols #2-#5 and symbols #6-#9, respectively, in slot #nK ₁ (K ₁ =7).

The UE may determine the RI in the PDSCH time domain resource allocation table (eg, FIG. 1B) based on at least one of the value of the determined field in the DCI (eg, the time domain resource allocation field (time domain resource setting)) and the upper layer parameter ( for example, pdsch-TimeDomainAllocationList in an RRC layer control) and, based on the string with the specified RI, can determine the likely PDSCH #0, #5, and #6 reception intervals where PDSCHs #0-#2 are located.

In FIG. 11 The ARI in DCI for scheduling PDSCH #0 for eMBB is 2. Therefore, based on the specified ARI, the UE, as the PUCCH resource to be used for transmitting the semi-static HARQ-ACK codebook for eMBB (HARQ-ACK codebook for eMBB), may define resource #2 PUCCH.

In slot #nK ₁ (K ₁ =7), the eMBV PDSCH #0 is located in the PDSCH receiving candidate slot #0 containing symbols #0-#13. For this reason, the HARQ-ACK bits for PDSCH #0 are mapped to positions corresponding to the PDSCH likely interval index 0 in the eMBV HARQ-ACK codebook.

On the other hand, in FIG. 11 ARIs in DCI for PDSCH scheduling #1 and 2 for URLLC are 0 and 1. As mentioned above, when multiple ARIs for one service are detected in one HARQ-ACK window, the UE may, as a PUCCH resource to be used for transmitting the semi-static codebook HARQ-ACK for URLLC (HARQ-ACK codebook for URLLC), determine PUCCH resource #1 based on the ARI that is detected most recently (eg, in FIG. 11, ARI=1 in DCI for PDSCH #2 scheduling).

In slot #nK ₁ (K ₁ =6), the URLLC PDSCHs #1 and #2, respectively, are placed in PDSCH receive slots #5 and #6 containing symbols #2-#5 and symbols #6-, respectively. #9. For this reason, the HARQ-ACK bits for PDSCH channels #1 and #2 are mapped to positions corresponding to PDSCH Receive Interval Indexes 5 and 6 in the URLLC HARQ-ACK Codebook.

[Subslot Level]

Fig. 12 is a diagram of an example operation of determining a semi-static HARQ-ACK codebook at the subslot level according to the first method of the second aspect. In FIG. 12, the UE may determine the set M _{A from} the likely PDSCH reception intervals in subslot #nK ₁ for each HARQ-ACK slot value K ₁ according to the operation of determining the semi-static HARQ codebook at the subslot level (see, for example, FIGS. 5B, 6A-6C and 7-9). It should be noted that for Fig. 12 will mainly describe the difference from FIG. eleven.

In the case of FIG. 12, in the HARQ-ACK window (set C(K ₁ ) of values K ₁ ={3, 2, 1} of the HARQ-ACK slot), candidate PDSCH _reception slots M _A assigned indices 0-3 are available. Note that the method for assigning indices 0-3 is the same as the method described with reference to FIG. 7-9.

For FIG. 12, it is assumed that the UE is not configured with retransmission control with CBG as an element and the number of layers equal to 1. Thus, both the HARQ-ACK codebook for URLLC and the HARQ-ACK codebook for eMBB may contain Ms (=4) bits, where M _c is a number equal to the number of available candidate slots M _{A since} PDSCH reception in the HARQ-ACK window.

For example, in FIG. 12 PDSCH #0 for eMBB is located in PDSCH receive candidate slot #0 containing symbols #2-#5 belonging to subslot #nK ₁ (K ₁ =3). PDSCHs #1-#3 for URLLCs are located respectively in candidate PDSCH reception slots #1-#3 belonging to subslot #nK ₁ (K ₁ =2).

The UE may determine the RI in the PDSCH time domain resource allocation table (eg, FIG. 1B) based on at least one of the value of a specific field in the DCI (eg, time domain resource allocation field) and an upper layer parameter (eg, "pdsch-Ti me DomainAI location List" in the RRC layer control) and, based on the string with the specified RI, can determine the likely PDSCH #0-#3 reception intervals at which PDSCH #0-#3 are scheduled.

For example, in FIG. 12 The ARI in DCI for scheduling PDSCH #0 for eMBB is 0. Therefore, based on the specified ARI, the UE can determine PUCCH resource #0 as the PUCCH resource to be used for transmitting the HARQ-ACK codebook for eMBB. Note that subslot #n determined based on the HARQ-ACK slot value K ₁ may include at least some of the symbols of PUCCH resource #0 (some of the symbols need not be included in subslot #n).

In subslot #nK ₁ (K ₁ =3), the eMBV PDSCH #0 is located in the PDSCH receive candidate slot #0 containing symbols #2-#5. For this reason, the HARQ-ACK bits for PDSCH #0 are mapped to positions corresponding to the PDSCH likely interval index 0 in the eMBV HARQ-ACK codebook.

On the other hand, in FIG. 12 ARIs in DCI for scheduling PDSCH #1-#3 for URLLC are 1 to 3. As mentioned above, when multiple ARIs for one service are detected in one HARQ-ACK window, the UE may determine a PUCCH resource to be used for codebook transmission. HARQ-ACK for URLLC, based on the most recently discovered ARI (eg resource #3 in FIG. 12, where in DCI for scheduling PDSCH #3 ARI=3).

In slot #nK ₁ (K ₁ =2), the PDSCHs #1-#3 for the URLLCs are placed in candidate PDSCH reception slots #1-#3, respectively. For this reason, the HARQ-ACK bits for PDSCHs #1-#3 are mapped to positions corresponding to PDSCH Receive Interval Indices 1-3 in the URLLC HARQ-ACK Codebook.

As mentioned above, in the first method, the same granularity of the HARQ-ACK slot value K ₁ and the same PDSCH time domain resource allocation table are used for a plurality of services. Accordingly, a semi-static HARQ-ACK codebook having the same size can be generated for multiple services.

"Second way"

The second method uses the same HARQ-ACK slot value K ₁ granularity and different PDSCH time domain resource allocation tables or different rows in the common PDSCH time domain resource allocation table for multiple services (eg, eMBB service and URLLC service). It should be noted that for the second method, the difference from the first method is mainly described.

Each of the FIGS. 13A and 13B is a diagram illustrating an example of a PDSCH time domain resource allocation table for each service according to the second method of the second aspect. The set of possible PDSCH reception intervals different for a set of services may be indicated by different rows in the PDSCH time domain resource allocation table common to that set of services (FIG. 13A), or may be indicated by a PDSCH time domain resource allocation table specific to each of the specified services. multiple services (FIG. 13B).

For example, in FIG. 13A, the plurality of possible PDSCH reception intervals for URLLC is indicated by rows with RI=0-8 in the PDSCH time domain resource allocation table common to the URLLC service and the eMBB service. At the same time, in this PDSCH time domain resource allocation table, rows with RI=9-11 indicate a plurality of possible PDSCH reception intervals for URLLC.

On the other hand, as shown in FIG. 13B, a PDSCH time domain resource allocation table for an eMBV service and a PDSCH time domain resource allocation table for a URLLC service may be configured or predetermined. In FIG. 13B, the set of possible PDSCH reception intervals for the URLLC is indicated by the rows of the PDSCH time domain resource allocation table for the eMBB service. At the same time, the plurality of possible PDSCH reception intervals for the URLLC is indicated by the rows of the PDSCH time domain resource allocation table for the URLLC service.

The UE may generate (configure, determine) a semi-static HARQ-ACK codebook for each service based on the specified set of candidate intervals M _{A, from} the reception of the PDSCH for each service. The UE may determine the size of the semi-static HARQ-ACK codebook for each service based on the PDSCH likely interval indices (their total) for each service.

The UE may transmit a semi-static HARQ-ACK codebook generated for each service using the PUCCH resource defined for each service. The UE may determine the PUCCH resource for each service as described in the first method.

[Slot Level]

Fig. 14 is a diagram of an example of a plurality of possible PDSCH reception intervals for each service determined based on the slot level HARQ-ACK slot value K ₁ . In FIG. 14 shows the service-wide PDSCH resource allocation table shown in FIG. 13A, or the per-service PDSCH resource allocation table shown in FIG. 13B and the likely PDSCH reception intervals for each service determined based on the slot format.

More specifically, the UE may define the HARQ-ACK window (set C (K ₁ ) of K ₁ HARQ-ACK slot values) to be common to multiple services. For each HARQ-ACK slot value K ₁ , the UE may determine a set of candidate PDSCH reception slots for each service based on the PDSCH time domain resource allocation table shown in FIG. 13A or FIG. 13B, and the format of a certain time element. Each of the candidate PDSCH reception intervals in the HARQ-ACK window may be assigned indexes for each service.

For example, in FIG. 14, the set of candidate PDSCH reception slots M _A , available in the HARQ-ACK window for the URLLC service, includes candidate PDSCH reception slots that are assigned indices 0-8. At the same time, PDSCH _candidate intervals available in the HARQ-ACK window for the eMBB service are included in the set M _A from PDSCH candidate intervals, which are assigned indices 0-2.

Fig. 15 is a diagram of an example operation of determining the semi-static HARQ-ACK codebook at the slot level according to the second method of the second aspect. In FIG. 15 shows how the UE can determine the plurality of candidate slots M _{A, from} receiving the PDSCH in slot #nK ₁ for each service and for each HARQ-ACK slot value K ₁ according to the slot level semi-static HARQ codebook determination operation (see e.g. , Fig. 1A-1C and 2-4).

As described with reference to FIG. 14, for the URLLC service in the HARQ-ACK window (corresponding to the set C (K ₁ ) of values K ₁ ={7, 6, 5} of the HARQ-ACK slot), candidate slots M _{A from} PDSCH reception are available, which are assigned indices 0-8 . For this reason, when the UE is not configured to control retransmission with CBG as an element and the number of layers is 1, the HARQ-ACK codebook for URLLC may contain 9 bits.

On the other hand, for the eMBB service in the HARQ-ACK window (corresponding to the set C (K ₁ ) of values K ₁ ={7, 6, 5} of the HARQ-ACK slot), candidate slots M _{A from} PDSCH reception are available, which are assigned indices 0 -2. For this reason, when the UE is not configured to control retransmission with CBG as an element and the number of layers is 1, the HARQ-ACK codebook for eMBB may contain 3 bits.

As described above, when available candidate PDSCH reception intervals M _A , _s in the HARQ-ACK window are determined for each service, it is possible to reduce the size of the HARQ-ACK codebook for at least one service.

For example, in FIG. 15 The eMBB PDSCH #0 is located in the eMBB PDSCH receive candidate slot #0 containing symbols #0-#13 in slot #nK ₁ (K ₁ =7). The HARQ-ACK bits for PDSCH #0 are mapped to positions corresponding to PDSCH Receive Interval Index 0 in the eMBV HARQ-ACK codebook.

The ARI in DCI for scheduling PDSCH #0 is 2. Therefore, based on the specified ARI, the UE can determine PUCCH resource #2 as the PUCCH resource to be used for transmitting the HARQ-ACK codebook for eMBB.

In slot #nK ₁ (K ₁ =6), the URLLC PDSCHs #1 and #2, respectively, are placed in PDSCH receive slots #5 and #6 containing symbols #2-#5 and symbols #6-, respectively. #9. For this reason, the HARQ-ACK bits for PDSCH channels #1 and #2 are mapped to positions corresponding to PDSCH Receive Interval Indexes 5 and 6 in the URLLC HARQ-ACK Codebook.

The ARIs in DCI for PDSCH scheduling #1 and 2 for URLLC are 0 and 1. As mentioned above, when a plurality of ARIs for one service are detected in one HARQ-ACK window, the UE may, as a PUCCH resource to be used for transmitting the HARQ- ACK for URLLC, determine PUCCH resource #1 based on the most recently discovered ARI (eg, in FIG. 15, ARI=1 in DCI for PDSCH #2 scheduling).

[Subslot Level]

Fig. 16 is a diagram of an example of a plurality of possible PDSCH reception intervals for each service determined based on the HARQ-ACK slot value K ₁ at the subslot level. For the case in FIG. 16, the service-common PDSCH resource allocation table shown in FIG. 13A, or the per-service PDSCH resource allocation table shown in FIG. 13B may be divided into a plurality of sub-tables based on the number of sub-slots in a slot.

The known rule for determining which subtable for each service each candidate PDSCH reception interval of each service belongs to is the same as described in the first aspect. For example, for the case in Fig. 16, a subtable containing a row indicating each possible PDSCH reception interval may be determined based on which subslot the last symbol of each possible PDSCH reception interval of each service belongs to.

For each HARQ-ACK slot value K ₁ , the UE may determine a plurality of candidate PDSCH reception slots for each service based on a subtable of the PDSCH time domain resource allocation table shown in FIG. 13A or FIG. 13B and the format of a particular temporal element (eg, subslot). Each of the candidate PDSCH reception intervals in the HARQ-ACK window may be assigned indexes for each service.

For example, in FIG. 16, the set of PDSCH candidate slots _MA , c available in the HARQ-ACK window for the URLLC service includes PDSCH candidate slots that are assigned indices 0-3. At the same time, the set M _A , _from the PDSCH candidate intervals available in the HARQ-ACK window for the eMBB service, includes PDSCH candidate intervals assigned index 0.

Fig. 17 is a diagram of an example operation of determining a semi-static HARQ-ACK codebook at the subslot level according to the second method of the second aspect. In the case of FIG. 17, the UE may determine a set _{MA, with} likely PDSCH reception intervals in subslot #nK ₁ for each service and for each HARQ-ACK slot value K ₁ according to the subslot level semi-static HARQ codebook determination operation (see, for example, FIG. 5B, 6A-6C and 7-9).

As described with reference to FIG. 16, in the HARQ-ACK window (corresponding to the set C (K ₁ ) of values K ₁ ={3, 2, 1} of the HARQ-ACK slot), candidate slots M _A are available for the URLLC service, _from receiving PDSCHs assigned indices 0- 3. For this reason, when the UE is not configured to control retransmission with CBG as an element and the number of layers is 1, the HARQ-ACK codebook for URLLC may contain 4 bits.

At the same time, in the HARQ-ACK window (corresponding to the set C (K ₁ ) of values K ₁ ={3, 2, 1} of the HARQ-ACK slot) for the eMBB service, possible PDSCH reception slots M _{A c} assigned index 0 are available For this reason, when the UE is not configured to control retransmission with CBG as an element and the number of layers is 1, the HARQ-ACK codebook for eMBB may contain 1 bit.

For example, in FIG. 17 The eMBB PDSCH #0 is located in the eMBB PDSCH receive candidate interval #0 in subslot #nK ₁ (K ₁ =3). The HARQ-ACK bits for PDSCH #0 are mapped to positions corresponding to PDSCH Receive Interval Index 0 in the eMBV HARQ-ACK codebook.

The ARI in DCI for scheduling PDSCH #0 is 0. For this reason, the UE may determine the PUCCH resource #0 to be used for transmitting the HARQ-ACK codebook for eMBB based on the indicated ARI.

In subslot #nK ₁ (K ₁ =2), PDSCHs #1-#3 for URLLCs are respectively placed in possible PDSCH reception slots #1, #2, and #3 containing symbols #6-#7, symbols #8-#9 and characters #10-#11. For this reason, the HARQ-ACK bits for PDSCHs #1, #2, and #3 are mapped to positions corresponding to PDSCH likely interval indices 1, 2, and 3 in the URLLC HARQ-ACK codebook.

ARIs in DCI for PDSCH scheduling #1, 2 and 3 for URLLC are 1, 2 and 3. HARQ-ACK books for URLLC, based on the most recently discovered ARI (eg, PUCCH resource #3 in FIG. 17, where in DCI for scheduling PDSCH #2 ARI=3).

As described above, in the second method, the plurality of possible PDSCH reception intervals for each service is given with the same fraction of the HARQ-ACK timeslot value for the plurality of services, and is indicated by different PDSCH time domain resource allocation tables or different rows in the common time domain resource allocation table. PDSCH. Accordingly, based on the set of possible intervals M _{A , since} receiving the PDSCH for each service, the size of the HARQ-ACK codebook for at least one service can be reduced.

"The Third Way"

In the third method, different granularity of HARQ-ACK slot value K ₁ and the same PDSCH time domain resource allocation table are used for multiple services (eg, eMBB service and URLLC service). Note that, for the third method, the difference from at least one of the first and second methods is mainly described.

Although the same PDSCH time domain resource allocation table is used in the third method, different sets of possible PDSCH reception intervals are used for a plurality of services because different granularity of the HARQ-ACK slot value K ₁ is used as a basis.

Fig. 18 is a diagram of an example of a plurality of possible PDSCH reception intervals for each service according to the third method of the second aspect. Fig. 18 shows an example in which the granularity of the HARQ-ACK slot value K ₁ for the eMBB service is set at the slot level, and the granularity of the HARQ-ACK slot value K ₁ for the URLLC service is set at the sub-slot level. However, the present invention is not limited to this example.

For example, the granularity of the HARQ-ACK slot value K ₁ for the eMBB service may be at the sub-slot level, and the granularity of the HARQ-ACK slot value K ₁ for the URLLC service may be at the sub-slot level. The units of granularity of the HARQ-ACK slot values K ₁ for the eMBB service and the URLLC service may be, for example, subslots with a different number of symbols (eg, a subslot of seven symbols and a subslot of two symbols).

Fig. 18 represents, for each service, the likely PDSCH reception intervals determined based on the PDSCH Time Domain Resource Allocation Table shown in FIG. 1B and the format of a certain temporary element (eg, slot).

More specifically, the UE may determine a HARQ-ACK window (set C (K ₁ ) of K ₁ HARQ-ACK slot values) for each service. The UE may determine a plurality of candidate PDSCH reception intervals for each service based on the PDSCH time domain resource allocation table shown in FIG. 1B and the format of a particular time element (eg, slot or subslot) for each service and for each HARQ-ACK slot value K ₁ . In the HARQ-ACK window for each service, each of the likely PDSCH reception intervals may be assigned indexes for each service.

For example, in FIG. 18, in the set of available candidate slots M _{A, since} PDSCH reception in the HARQ-ACK window for URLLC, PDSCH receiver candidate slots assigned indices 0-5 are included. At the same time, the set of available candidate slots M _{A, from} PDSCH reception in the eMBV HARQ-ACK window includes PDSCH receiver candidate slots, which are assigned indices 0-8.

[eMBV Service]

Fig. 19 is a diagram of an example of an eMBV HARQ-ACK semi-static codebook determination operation according to the third method of the second aspect. In FIG. 19, for the eMBB service, the HARQ-ACK slot value K ₁ is used at the slot level, and thus the UE can determine the set of candidate slots M _{A, from} receiving the PDSCH for the eMBB service in slot #nK ₁ for each HARQ slot value K ₁ -ACK according to the operation of determining the semi-static codebook HARQ at the slot level (see, for example, Fig. 1A-1C and 2-4).

As described with reference to FIG. 18, for the eMBB service in the HARQ-ACK window (corresponding to the set C (K ₁ ) of values K ₁ ={7, 6, 5} of the HARQ-ACK slot), candidate slots M _{A from} PDSCH reception are available, which are assigned indices 0-8 . For this reason, when the UE is not configured to control retransmission with CBG as an element and the number of layers is 1, the HARQ-ACK codebook for eMBB may contain 9 bits.

For example, in FIG. 19, PDSCH channels #0 and #1 for eMBB are located in PDSCH receive candidate slot #0 containing symbols #0-#13 in slot #n-K ₁ (K ₁ =7), and PDSCH receiving candidate slot #5 contains symbols # 2-#5 in slot #n-K ₁ (K ₁ =6). The HARQ-ACK bits for PDSCH channels #0 and #1 are mapped to positions corresponding to PDSCH receive interval indices 0 and 5 in the eMBV HARQ-ACK codebook.

The ARI in the latest DCI (DCI for PDSCH #1 scheduling) in the HARQ-ACK window for the eMBB service is 0. Therefore, based on the indicated ARI, the UE, as the PUCCH resource to be used for transmitting the eMBB HARQ-ACK codebook, may define resource #0 PUCCH.

Note that, although not shown in the figures, when the sub-slot level HARQ-ACK timeslot values K ₁ are used for the eMBB service, the UE may determine the set of candidate slots M _{A, from} receiving the PDSCH for the eMBB service according to the semi-static codebook determination operation. HARQ at the subslot level (see, for example, FIGS. 5B, 6A-6C and 7-9).

[URLLC Service]

Fig. 20 is a diagram of an operation example of determining a semi-static HARQ-ACK codebook for URLLC according to the third method of the second aspect. In FIG. 20, for the URLLC service, the HARQ-ACK slot value K ₁ at the sub-slot level is used, and thus the UE can determine a plurality of candidate slots _{MA, since} receiving the PDSCH for the URLLC service in slot #nK ₁ for each HARQ slot value K ₁ -ACK according to the operation of determining the semi-static codebook HARQ at the subslot level (see, for example, Fig. 5B, 6A-6C and 7-9).

As described with reference to FIG. 18, in the HARQ-ACK window (corresponding to the set C (K ₁ ) of values K ₁ ={7, 6, 5} of the HARQ-ACK slot), candidate slots M _A are available for the URLLC service, _from receiving PDSCHs assigned indices 0- 5. For this reason, when the UE is not configured to control retransmission with CBG as an element and the number of layers is 1, the HARQ-ACK codebook for URLLC may contain 4 bits.

For example, in FIG. 20 PDSCHs #2, #3, and #4 for URLLCs are placed in PDSCH receive candidate slot #0 containing symbols #2-#5 in subslot #nK ₁ (K ₁ =7) and in receive candidate slots #1 and #3 PDSCH, at least part of which belongs to subslot #nK ₁ (K ₁ =6). The HARQ-ACK bits for PDSCHs #2, #3, and #4 are mapped to positions corresponding to PDSCH receive interval indices 0, 1, and 3 in the eMBV HARQ-ACK codebook.

The ARI in the latest DCI (DCI for PDSCH #4 scheduling) in the HARQ-ACK window for the URLLC service is 3. Therefore, based on the specified ARI, the UE, as the PUCCH resource to be used for transmitting the HARQ-ACK codebook for URLLC, may define resource #3 PUCCH.

Note that, although not shown in the figures, when slot-level HARQ-ACK timeslot values K ₁ are used for the URLLC service, the UE may determine a plurality of candidate slots M _{A, from} receiving the PDSCH for the URLLC service according to the semi-static codebook determination operation. HARQ at the slot level (see, for example, FIGS. 1A-1C and 2-4).

As described above, the third method uses different granularity of HARQ-ACK slot value K ₁ for multiple services. Accordingly, a plurality of possible PDSCH reception intervals for each service may be determined based on one PDSCH time domain resource allocation table.

"The Fourth Way"

In the fourth method, different granularity of HARQ-ACK slot value K ₁ and different PDSCH time domain resource allocation tables are used for multiple services (eg, eMBB service and URLLC service). Note that, for the fourth method, the difference from at least one of the first to third methods is mainly described.

In the fourth method, as shown in the example of FIG. 13A or 13B, a different PDSCH time domain resource allocation row or table is provided for each service. The UE may use different sets of possible PDSCH reception intervals for multiple services based on the specified rows or tables and different granularity of the HARQ-ACK slot value K ₁ for each service.

For example, when the granularity of the HARQ-ACK slot value K ₁ for the eMBB service is set at the slot level, and the granularity of the HARQ-ACK slot value K ₁ for the URLLC service is set at the sub-slot level, the UE may determine for the eMBB the likely intervals M _{A, from} receiving PDSCH, which in FIG. 14 are indexed 0-2. At the same time, for the URLLC, the UE may determine likely intervals M _{A, from} receiving the PDSCH, which in FIG. 16 are indexed 0-3. The details of said determination operation are the same as described with reference to FIG. 14 and 16.

For example, when the granularity of the HARQ-ACK slot value K ₁ for the eMBB service is set at the sub-slot level, and the granularity of the HARQ-ACK slot value K ₁ for the URLLC service is set at the slot level, the UE may determine for the eMBB the likely intervals M _{A, from} receiving PDSCH, which in FIG. 16 is assigned an index of 0. At the same time, for the URLLC, the UE may determine the likely intervals _{MA, since} receiving the PDSCH, which in FIG. 14 are indexed 0-8. The details of said determination operation are the same as described with reference to FIG. 14 and 16.

As mentioned above, in the fourth method, a plurality of possible PDSCH reception intervals for each service is determined using different PDSCH time domain resource allocation rows or tables for each service. Accordingly, the HARQ-ACK codebook size for at least one service can be reduced.

<HARQ-ACK Semi-Static Codebook Reply>

In a second aspect, a semi-static HARQ-ACK codebook may be determined for each service using any of the first through fourth methods described above. The first to fourth methods described an example in which the UE transmits a semi-static HARQ-ACK codebook for each service using PUCCH for each service in the same time element (eg, slot or subslot). However, the present invention is not limited to this example.

<<Option 1>>

In a certain time element (eg, slot or subslot), the UE may transmit HARQ-ACK bits corresponding to different services in one semi-static HARQ-ACK codebook. In this case, the UE may first determine a semi-static HARQ-ACK codebook for each service (see the first to fourth methods), and then generate one semi-static HARQ-ACK codebook based on the position of the HARQ-ACK bits for each service.

For example, as described in methods one through four above, the HARQ-ACK codebook for eMBB may contain HARQ-ACK bits for PDSCH for eMBB, and may not contain HARQ-ACK bits for PDSCH for URLLC (for example, Fig. 11 and 12 and other figures). In this case, the first to fourth methods described above can be used.

Alternatively, if there is sufficient time to process the URLLC PDSCH, the eMBV HARQ-ACK codebook may contain the HARQ-ACK bits, which are determined based on the PDSCH decoding results for the URLLC, at positions corresponding to the PDSCH likely interval indices used for receiving PDSCH for URLLC. It should be appreciated that in the absence of sufficient PDSCH processing time for the URLLC, the NACK bits may be included in positions corresponding to the PDSCH likely interval indices of the PDSCH. In this case, the above-described first method can be used.

Alternatively, the eMBV HARQ-ACK codebook may contain the URLLC PDSCH HARQ-ACK bits (with ACK bits or NACK bits used as virtual CRC) in positions corresponding to the PDSCH Receive Possible Interval Indexes used to receive the URLLC PDSCH. , regardless of whether there is time to process the PDSCH for the URLLC. In this case, the above-described first method can be used.

As described in the first to fourth methods described above, the HARQ-ACK codebook for URLLC may contain HARQ-ACK bits for PDSCH for URLLC, and may not contain HARQ-ACK bits for PDSCH for eMBB (for example, Figs. 11 and 12 and other figures). In this case, the first to fourth methods described above can be used.

Alternatively, the URLLC HARQ-ACK codebook may contain both the URLLC PDSCH HARQ-ACK bits and the eMBV PDSCH HARQ-ACK bits. The HARQ-ACK bits for eMBB may be HARQ-ACK bits determined based on decoding results, NACK bits, or virtual CRC. In this case, the above-described first method can be used.

Fig. 21 is a diagram of an example of a semi-static HARQ-ACK codebook common to multiple services (common HARQ-ACK codebook) according to option 1 of the second aspect. Fig. 21 shows an example in which the HARQ-ACK slot value K ₁ with the same granularity (eg, slot level) is used for a plurality of services, similar to FIG. eleven.

In FIG. 11 eMBB HARQ-ACK codebook containing PDSCH HARQ-ACK bits for eMBB and eMBB HARQ-ACK codebook containing PDSCH HARQ-ACK bits for URLLC are transmitted in different resources #1 and #2, respectively. PUCCH.

On the other hand, in the case of FIG. 21, a common HARQ-ACK codebook that is common between eMBB and URLLC and containing HARQ-ACK bits for PDSCH for eMBB and HARQ-ACK bits for PDSCH for URLLC can be transmitted. The common HARQ-ACK codebook may, as shown in FIG. 21 be transmitted on a plurality of PUCCH resources in slot #n, or may be transmitted on a single PUCCH resource.

Fig. 22 is a diagram of another example of a semi-static HARQ-ACK codebook common to multiple services (common HARQ-ACK codebook) according to option 1 of the second aspect. Fig. 22 is the same as FIG. 21, except that FIG. 22 shows an example in which the HARQ-ACK slot value K ₁ with the same granularity (eg, at the sub-slot level) is used for multiple services, similar to FIG. 12.

<<Option 2>>

In a certain time element (eg, slot or subslot), the UE may transmit a semi-static HARQ-ACK codebook of a specific service without transmitting a semi-static HARQ-ACK codebook of a plurality of services. In this case, the UE may choose not to use the semi-static HARQ-ACK codebook of the other service(s).

For example, the UE, upon receiving at least one of the PDCCH and PDSCH for URLLC, may transmit a HARQ-ACK codebook for URLLC containing HARQ-ACK bits in positions corresponding to PDSCH likely interval indices for URLLC.

In a case other than the above, the UE may transmit an eMBB HARQ-ACK codebook containing the HARQ-ACK bits in positions corresponding to the eMBB PDSCH likely interval indices.

"Determining the Response Method"

The UE may determine which semi-static HARQ-ACK codebook (e.g., at least one of a HARQ-ACK codebook for eMBB and a HARQ-ACK codebook for URLLC, or a common HARQ-ACK codebook) is to be returned in a specific time chip. using at least one of upper layer signaling and DCI.

Alternatively, the UE may determine which semi-static HARQ-ACK codebook is to be returned in a particular time chip based on another parameter (eg, UE capability information). For example, the UE may determine a semi-static HARQ-ACK codebook to be responded to in a certain time chip based on whether the UE is able to generate a HARQ-ACK codebook for each service.

In a second aspect, when a UE supports a plurality of services having different requirements, it is possible to appropriately control at least one of the determination and response of a semi-static HARQ-ACK codebook based on the value of the HARQ-ACK time interval at the level of a certain time element (e.g., a slot or subslot).

(Radio communication system)

The following describes the configuration of a radio communication system in accordance with one implementation of the present invention. In this radio communication system, the radio communication method according to each of the above-described implementations of the present invention may be used for communication individually or in combination.

Fig. 23 represents an example of a generalized configuration of a radio communication system in accordance with one implementation. The radio communication system 1 may be a system capable of communicating using LTE, a new 5G radio system (5G NR) and the like, the specifications of which are proposed by the 3GPP consortium.

The radio communication system 1 is configured to support dual connectivity between multiple Radio Access Technologies (RAT) (Multi-RAT Dual Connectivity, MR-DC). The MR-DC may include a dual connection between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR, a dual connection between NR and LTE, and the like. (Dual connection E-UTRA-NR is referred to as EN-DC, double connection NR-E-UTRA is referred to as NE-DC).

In EN-DC, the LTE Base Station (eNB) (E-UTRA) is the Master Node (MN) and the NR Base Station (gNB) is the Secondary Node (SN). In the NE-DC, the NR base station (gNB) is the primary node (MN) and the LTE base station (eNB) (E-UTRA) is the secondary node (SN).

The radio communication system 1 is configured to support a dual connection between a plurality of base stations in one RAT (for example, a dual connection in which both MNs and SNs are base stations (gNBs) of the NR system (NR-NR dual connection, referred to as NN-DC) ).

The radio communication system 1 may include a base station 11 forming a macro cell C1 with a relatively wide coverage, and base stations 12 (12a-12c) located in the macro cell C1 and forming small cells C2 with less coverage than that of the macro cell C1. The user terminal 20 may reside in at least one cell. Placement, quantity, etc. cells and user terminal 20 is not limited in any way to the aspect shown in the diagram. Hereinafter, base stations 11 and 12 are collectively referred to as base stations 10 unless otherwise indicated.

The user terminal 20 may be connected to at least one base station from a plurality of base stations 10. The user terminal 20 is configured to use at least one of carrier aggregation (AH) and dual connection (CC) using a plurality of elementary carriers (EC) .

Each EN can be included in at least one of the first frequency range (eng. Frequency Range 1, FR1)) and the second frequency range (FR2). Macro cell C1 may refer to FR1 and small cells C2 may refer to FR2. For example, the FR1 band may be 6 GHz and below, and the FR2 band may be above 24 GHz. Please note that frequency ranges, definitions, etc. FR1 and FR2 are not limited in any way, and, for example, FR1 may correspond to a frequency range above FR2.

The user terminal 20 is configured to communicate using at least one of Time Division Duplex (TDD) and/or Frequency Division Duplex (FDD) on each EN.

The plurality of base stations 10 may be connected by a wired connection (for example, a fiber optic cable in accordance with the Common Public Interface (CPRI) standard, an X2 interface, etc.) or a wireless connection (for example, NR communication) . For example, if an NR link is used as a reverse connection between base stations 11 and 12, then the base station 11 corresponding to the older station may be called the donor of the integrated access and reverse connection (Eng. Integrated Access and Backhaul, IAB), and the base station 12, the corresponding relay station may be called an IAB node.

Base station 10 may be connected to core network 30 through another base station 10 or directly. The core network 30 may comprise at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core, NGC), etc.

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

The radio communication system 1 may use a wireless access scheme based on orthogonal frequency division multiplexing (OFDM). For example, in at least one of the downlink (English downlink, DL) and uplink (English uplink, UL), OFDM with a cyclic prefix (English Cyclic Prefix OFDM, CP-OFDM), OFDM with spread spectrum on based on the discrete Fourier transform (Eng. Discrete Fourier Transform Spread OFDM, DFT-s-OFDM), multiple access with orthogonal frequency division (Eng. Orthogonal Frequency Division Multiple Access, OFDMA), multiple access on a single carrier with division in frequency .Single Carrier Frequency Division Multiple Access, SC-FDMA), etc.

The wireless access scheme may be referred to as a "signal type". Note that in the radio communication system 1, a different wireless access scheme (eg, different single carrier transmission scheme, different multi-carrier transmission scheme) may be used as the wireless access scheme in the uplink and downlink.

In the radio communication system 1, a downlink shared channel (Physical Downlink Shared Channel, PDSCH) shared by all user terminals 20, a broadcast channel (Physical Broadcast Channel, PBCH) can be used as downlinks. ), downlink control channel (Physical Downlink Control Channel, PDCCH), etc.

In the radio communication system 1, uplink channels can be used as an uplink shared channel (Physical Uplink Shared Channel, PUSCH) shared by all user terminals 20, an uplink control channel (Physical Uplink Control Channel, Eng. Physical Uplink Control Channel, PUCCH), random access channel (Physical Random Access Channel, PRACH), etc.

The PDSCH carries user data, higher layer control information, System Information Blocks (SIBs), and so on. User data, higher level control information, etc. may be transmitted on the PUSCH. Master Information Blocks (MIBs) can be transmitted on the Strategic Missile Forces.

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

Note that the DCI for PDSCH scheduling may be referred to as downstream allocation, downstream DCI, etc., and the DCI for PUSCH scheduling may be referred to as upstream grant, upstream DCI, etc. Note that PDSCH may be interpreted as downstream data, a PUSCH can be interpreted as upstream data.

A control resource set (CORESET) and a search space may be used for PDCCH discovery. CORESET corresponds to a resource for DCI lookup. The search space corresponds to the search area and the search method for candidate PDCCHs. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a particular search space based on the search space configuration.

One search space may correspond to a candidate PDCCH corresponding to one or more levels of aggregation. One or more search spaces may be referred to as a "multiple search spaces". It should be appreciated that "search space", "search space set", "search space configuration", "search space set configuration", "CORESET", "CORESET configuration" and the like can be interpreted interchangeably in the present disclosure.

Uplink Control Information (UCI) containing at least one of Channel State Information (CSI), Transmission Acknowledgment Information (which may also be referred to as, for example, Hybrid Automatic Repeat Acknowledgment reQuest ACKnowledgement, HARQ-ACK, ACK/NACK, etc.) and Sheduling Request (SR) may be transmitted via the PUCCH. Random access preambles may be transmitted via the PRACH to establish connections with cells.

It should be appreciated that in the present disclosure, a downlink, an uplink, and the like can be expressed without using the term "line". In addition, different channels can be expressed without adding the word "physical" at the beginning.

In the radio communication system 1, a Synchronization Signal (SS), a Downlink Reference Signal (DL-RS), and the like can be transmitted. In the radio communication system 1, as a downlink reference signal (English Downlink Reference Signal, DL-RS), an individual cell-specific reference signal (English Cell-Specific Reference Signal, CRS), a reference signal of information about the channel state (English Channel State Information Reference Signal (CSI-RS), Demodulation Reference Signal (DMRS), Positioning Reference Signal (PRS), Phase Tracking Reference Signal (PTRS) etc.

Said synchronization signal may be at least one of, for example, a primary synchronization signal (Primary SS, PSS) and a secondary synchronization signal (Secondary SS, SSS). A signal block containing an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS/PBCH block, an SS block (SSB), and so on. Please note that SS, SSB, etc. may also be referred to as a reference signal.

Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), etc. can be transmitted as the uplink reference signal (UL-RS) in the radio communication system 1. Note that DMRS may be referred to as a user terminal-specific reference signal (UE-specific reference signal).

(Base station)

Fig. 24 shows an example of a base station configuration according to one implementation. The base station 10 includes a control section 110, a transmit/receive section 120, transmit/receive antennas 130, and a communication path interface 140. Note that base station 10 may include one or more control sections 110, one or more transmit/receive sections 120, one or more transmit/receive antennas 130, and one or more communication path interfaces 140.

It should be noted that the base station 10, in addition to the functional blocks presented in this example, related to parts important for this implementation, may contain other functional blocks that are also necessary for radio communication. Part of the operations of each of the sections described below may be omitted.

The control section 110 is configured to control the base station 10 as a whole. The control section 110 may be formed by a controller, a control circuit, or the like, well known in the art to which the present invention pertains.

The control section 110 is configured to control signal generation, scheduling (eg, resource allocation, mapping), and the like. The control section 110 is configured to control transmission and reception, measurement, and the like using the transmission/reception section 120, the transmit/receive antennas 130, and the communication path interface 140. The control section 110 is configured to generate data, control information, a sequence, and the like to be transmitted as a signal, and transmit the generated elements to the transmission/reception section 120. The control section 110 is configured to call processing (set up, release) for communication channels, control the state of the base station 10, and control radio resources.

The transmission/reception section 120 may include a baseband section 121, a radio frequency (RF) section 122, and a measurement section 123. Section 121 of the base band may contain section 1211 processing for transmission and section 1212 receiving processing. The transmit/receive section 120 may be formed by a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmit/receive circuit, or the like, well known in the art to which the present invention pertains.

The transmit/receive section 120 may be organized as a single transmit/receive section, or may contain a transmit section and a receive section. The transmission section may be formed by the transmission processing section 1211 and the RF section 122. The reception section may be formed by the reception processing section 1212, the RF section 122, and the measurement section 123.

The transmit/receive antennas 130 may be formed by antennas, such as a multi-element antenna or the like, well known in the art to which the present invention pertains.

The transmission/reception section 120 is configured to transmit the above-described downlink, synchronization signal, downlink reference signal, and the like. The transmission/reception section 120 is configured to receive the above-described uplink, uplink reference signal, and the like.

The transmit/receive section 120 is configured to generate at least one of a transmit beam and a receive beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), and the like.

The transmission/reception section 120 (transmission processing section 1211) is configured to perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing, such as control retransmission at the RLC layer), media access layer (MAC) processing, such as HARQ retransmission control), etc., for example, on data and control information, etc. obtained from the control section 110, and with the possibility of forming a sequence of bits for transmission.

The transmission/reception section 120 (transmission processing section 1211) is configured to perform processing for transmission, such as channel coding (which may include error correction coding), modulation, mapping, filtering, discrete Fourier transform (DFT) processing (if necessary). ), inverse fast Fourier transform (IFFT), precoding, digital-to-analogue conversion, and the like over a specified bit sequence to be transmitted, and capable of outputting a baseband signal.

The transmit/receive section 120 (RF section 122) is configured to perform RF modulation, filtering, amplification, and so on. above the baseband signal and with the possibility of transmitting an RF signal through the transmit/receive antennas 130.

In addition, the transmit/receive section 120 (RF section 122) is configured to perform amplification, filtering, demodulation to baseband signal, etc., on the RF signal received by the transmit/receive antennas 130.

The transmit/receive section 120 (receive processing section 1212) is configured to apply receive processing such as A/D conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, inverse mapping , demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc., to the received baseband signal, and with the possibility of obtaining user data, etc.

The transmission/reception section 120 (measurement section 123) is configured to perform a measurement related to the received signal. For example, the measurement section 123 may, based on the received signal, perform a measurement in Radio Resource Management (RRM), a measurement to obtain Channel State Information (CSI), and so on. The measurement section 123 can measure reception power (for example, Reference Signal Received Power, RSRP), reception quality (for example, Reference Signal Received Quality, RSRQ), signal-to-sum ratio interference and noise (Signal to Interference plus Noise Ratio, SINR), signal to noise ratio (Signal to Noise Ratio, SNR), signal strength (for example, Received Signal Strength Indicator, RSSI) ), channel information (eg, CSI), and the like. The measurement results may be transmitted to the control section 110 .

The communication path interface 140 is configured to perform signal transmission/reception (reverse connection signaling) with a device included in the core network 30 or other base stations 10, etc., and capable of receiving or transmitting user data (user plane data) , control plane data, etc. for user terminal 20.

Note that the transmission section and the reception section of the base station 10 in the present invention may be formed by at least one of the transmission/reception section 120, the transmit/receive antennas 130, and the communication path interface 140.

Note that the transmit/receive section 120 is configured to receive a codebook (HARQ-ACK semi-static codebook). The transmit/receive section 120 may receive the codebook using PUCCH or PUSCH.

Note that the transmission/reception section 120 is configured to transmit information indicative of the fraction (time element) of the HARQ-ACK time interval value. This information may be included in the system information or in the RRC parameter. The transmit/receive section 120 is configured to transmit at least one of the upper layer signaling and the DCI indicating which semi-static HARQ-ACK codebook (e.g., at least one of the HARQ-ACK codebook for eMBB and the HARQ codebook for URLLC , or a common HARQ-ACK codebook) is to be returned in a specific time chip.

Note that the control section 110 is configured to control the transmission of the PDSCH based on the received codebook.

(User terminal)

Fig. 25 shows an example of a user terminal configuration according to one implementation. The user terminal 20 includes a control section 210, a transmit/receive section 220, and transmit/receive antennas 230. It should be noted that the user terminal 20 may include one or more control sections 210, one or more transmit/receive sections 220, and one or more transmit/receive antennas. receiving antennas 230.

It should be noted that the user terminal 20, in addition to the functional blocks presented in this example, related to parts important for this implementation, may contain other functional blocks that are also necessary for radio communication. Part of the operations of each of the sections described below may be omitted.

The control section 210 is configured to control the user terminal 20 as a whole. The control section 210 may be formed by a controller, control circuit, or the like, well known in the art to which the present invention pertains.

The control section 210 is configured to control signal generation, display, and so on. The control section 210 is configured to control transmission/reception, measurement, and the like using the transmission/reception section 220 and the transmission/reception antennas 230. The control section 210 generates data, control information, sequences, and the like. for transmission as a signal, and is configured to transmit the formed elements to the transmission/reception section 220.

The transmit/receive section 220 may include a baseband section 221, an RF section 222, and a measurement section 223. Section 221 of the base band may contain section 2211 processing for transmission and section 2212 receiving processing. The transmit/receive section 220 may be formed by a transmitter/receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmit/receive circuit, or the like, well known in the art to which the present invention pertains.

The transmit/receive section 220 may be organized as a single transmit/receive section, or may contain a transmit section and a receive section. The transmission section may be formed by the transmission processing section 2211 and the RF section 222. The reception section may be formed by the reception processing section 2212, the RF section 222, and the measurement section 223.

The transmit/receive antennas 230 may be formed by antennas, such as a multi-element antenna or the like, well known in the art to which the present invention pertains.

The transmission/reception section 220 is configured to receive the above-described downlink, synchronization signal, downlink reference signal, and the like. The transmission/reception section 220 is configured to transmit the above-described uplink, uplink reference signal, and the like.

The transmit/receive section 220 is configured to generate at least one of a transmit beam and a receive beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), and the like.

The transmission/reception section 220 (transmission processing section 2211) is configured to perform PDCP layer processing, RLC layer processing such as RLC layer retransmission control, MAC layer processing (for example, HARQ retransmission control), and so on. , for example, on the data and control information, etc. obtained from the control section 210, and with the possibility of generating a bit sequence for transmission.

The transmission/reception section 220 (transmission processing section 2211) is configured to perform processing for transmission, such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, and the like over a specified bit sequence to be transmitted, and capable of outputting a baseband signal.

It should be appreciated that the decision to do or not to do DFT processing may be made based on the transform precoding configuration. The transmission/reception section 220 (transmission processing section 2211) may perform DFT processing for a specific channel (eg, PUSCH) as the above-described transmission processing to transmit the indicated channel using a DFT-s-OFDM scheme if transform precoding is enabled. , otherwise DFT processing as the above transfer operation is not required.

The transmit/receive section 220 (RF section 222) is configured to perform RF modulation, filtering, amplification, and so on. above the baseband signal and capable of transmitting the RF signal through the transmit/receive antennas 230.

In addition, the transmit/receive section 220 (RF section 222) is configured to perform amplification, filtering, demodulation to baseband signal, etc., on the RF signal received by the transmit/receive antennas 230.

The transmit/receive section 220 (receive processing section 2212) is configured to apply receive processing such as A/D conversion, FFT processing, ODFT (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding) , MAC layer processing, RLC layer processing, and PDCP layer processing, etc., to the received baseband signal, and with the possibility of obtaining user data, etc.

The transmission/reception section 220 (measurement section 223) is configured to perform a measurement related to the received signal. For example, the measurement section 223 may, based on the received signal, perform measurements in radio resource management (RRM), CSI measurement, and the like. The measurement section 223 may measure receive power (eg, RSRP), reception quality (eg, RSRQ, SINR, SNR), signal strength (eg, RSSI), channel state information (eg, CSI), and the like. be transmitted to the control section 210 .

Note that the transmission section and the reception section of the user terminal 20 in the present invention may be formed by at least one of the transmission/reception section 220, the transmission/reception antennas 230, and the communication path interface 240.

Note that the transmit/receive section 220 is configured to transmit a codebook (HARQ-ACK semi-static codebook). The transmit/receive section 220 is configured to transmit the codebook using PUCCH or PUSCH.

Note that the transmit/receive section 220 is configured to receive information indicative of the fraction (time element) of the HARQ-ACK slot value. This information may be included in the system information or in the RRC parameter. The transmit/receive section 220 is configured to receive at least one of the upper layer signaling and DCI indicating which semi-static HARQ-ACK codebook (e.g., at least one of the HARQ-ACK codebook for eMBB and the HARQ codebook for URLLC , or a common HARQ-ACK codebook) is to be returned in a specific time chip.

The control section 210 is configured to determine a plurality of one or more candidate intervals (PDSCH receiving candidate intervals) for receiving the downlink common channel available in the specified time element based on the value of the HARQ-ACK time slot using a time element shorter than the slot and the format of the specified time element. element (first aspect).

The control section 210 is configured to control the definition of the codebook based on the specified set of candidate intervals.

The control section 210 is configured to determine a plurality of likely intervals based on the allocation of the time domain resource for each time element in the slot.

The control section 210 is configured to determine which time element in the slot each of the candidate intervals belongs to, which is determined based on each time domain resource allocation in the slot, based on the position of the start symbol or the last symbol of each of these candidate intervals (first aspect).

The location of the time domain resource for each time element may be specified in a table containing a row in which the row index and at least one of the slot offset value, the index of the specified start symbol, the time duration, and the display type are related.

The control section 210 is configured to determine a set of one or more likely slots for receiving a downlink common channel available in a specified slot based on the HARQ-ACK slot value using the same or different slots for different services from the specified set. services and format of the specified time element (second aspect).

The control section 210 is configured to determine a plurality of likely intervals based on the same or different time domain resource allocations for each service of said plurality of services (second aspect).

The control section 210 is configured to determine a plurality of likely intervals such that they are individual or common to a plurality of services (second aspect).

The control section 210 is configured to determine the codebook to be individual or common to a plurality of services based on said plurality of likely intervals (second aspect).

(Hardware configuration)

In the functional diagrams used to describe the above implementations, blocks are shown in functional modules. These functional blocks (components) can be implemented by arbitrary combinations of at least one of the hardware and/or software. Here, the implementation method of each function block is not specifically limited. In other words, each functional block may be implemented by a single physically or logically connected device, or may be implemented by directly or indirectly connecting two or more physically or logically separate devices (via, for example, a wired, wireless connection, or the like) and using this set of devices. These functional blocks can be implemented by combining the above described software with one or more of the above devices.

Here, the functions include analysis, definition, decision making, calculation, calculation, processing, inference, research, search, confirmation, reception, transmission, output, access, disambiguation, selection, indication, establishment, comparison, assumption, assumption, consideration, broadcast, notification, message, forwarding, setting, reconfiguring, hosting (display), assigning, etc., but these functions are by no means limited to the above list. For example, the functional block(s) for realizing the transmission function may be called a transmission section (transmission unit), a transmitter, or the like. The implementation method of each component is not specifically limited to the above.

For example, base station, user terminal, etc. according to one implementation of the present invention may function as a computer executing the operations of the radio communication method of the present invention. In FIG. 26 shows an example of a base station and user terminal hardware configuration in accordance with one implementation. Physically, the base station 10 and user terminal 20 described above may be implemented 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 so on.

In this disclosure, words such as "hardware", "circuit", "device", "section", "module", etc. can be interpreted interchangeably. The hardware configuration of the base station 10 and the user terminal 20 may contain one or more of each of the devices shown in the drawings, or may not contain a part of these devices.

For example, although only one processor 1001 is shown, multiple processors may be provided. The operations may be performed by a single processor or by two or more processors simultaneously, sequentially, or otherwise. It should be appreciated that processor 1001 may be implemented using one or more integrated circuit chips.

Each function of base station 10 and user terminals 20 is implemented, for example, by enabling certain software(s) to be read into hardware, such as processor 1001 and memory 1002, and by enabling processor 1001 to perform calculations to control communication through the communication device 1004 and the ability to control the reading and/or writing of data to the memory 1002 and the storage device 1003.

The processor 1001 is configured to control the entire computer by, for example, executing an operating system. The processor 1001 may be configured to include a central processing unit (CPU) including interfaces with a peripheral device, a control device, a computing device, a register, and so on. For example, at least a portion of the control section 110 (210) described above, the transmit/receive section 120 (220), and the like, may be implemented by the processor 1001.

Further, the processor 1001 reads programs (program codes), program modules, data, and so on. from the storage 1003 and/or the communication device 1004 to the memory 1002 and performs various operations in accordance therewith. With regard to these programs, programs that implement the ability of a computer to perform at least part of the operations of the above implementations can be used. For example, control section 110 (210) may be implemented by program codes stored in memory 1002 and executed by processor 1001; other functional blocks can be implemented similarly.

Memory 1002 is a machine-readable, writable storage medium and may be formed by at least one of read only memory (ROM), permanent erasable memory (erasable programmable ROM, EPROM), electrically erasable read only memory. device (English Electrically Erasable Programmable ROM, EEPROM), random access memory (English Random Access Memory, RAM) and other suitable storage media. Memory 1002 may be referred to as a register, cache, main memory (main storage), and so on. The memory 1002 is configured to store executable programs (program codes), program modules, and the like for implementing the radio communication method according to an embodiment of the present invention.

The storage 1003 is a computer-readable, writable medium and can be implemented using, for example, at least one of a floppy disk, a floppy disk (a registered trademark of floppy disk), a magneto-optical disk (for example, a Compact Disc ROM, CD-ROM). ROM), etc.), Digital Versatile Disc, Blu-ray Disc (registered trademark), removable disk, hard disk, smart card, flash memory device (such as memory, removable storage, removable disk, etc.), magnetic tape, database, server, and other suitable media. Storage 1003 may be referred to as an additional storage device.

Communication device 1004 is a hardware (transmitter/receiver) for computer-to-computer communication via wired and/or wireless networks, and may be referred to as a network device, network controller, network card, communication module, etc., for example. The communication device 1004 may be configured to include a high frequency switch, an antenna switch, a filter, a frequency synthesizer, and so on. in order to implement, for example, frequency division duplex (FDD) and/or time division duplex (TDD). For example, the above-described transmit/receive sections 120 (220), transmit/receive antennas 130 (230), etc. can be implemented by the communication device 1004. In the transmit/receive section 120 (220), the transmit section 120a (220a) and the receive section 120b (220b) may be implemented with physical or logical separation.

The input device 1005 is a device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) for receiving information from outside. The output device 1006 is an output device (eg, display, acoustic emitter, LED indicator, etc.) for outputting information. It should be noted that the input device 1005 and the output device 1006 may be combined into a single structure (eg, a touch panel).

Devices of these types, including processor 1001, memory 1002, etc., are connected by bus 1007 to exchange information. Bus 1007 may be formed by a single bus or buses that differ from device to device.

Base station 10 and user terminals 20 may be configured to include hardware such as a microprocessor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (ASIC), a programmable logic device (English Programmable Logic Device, PLD), programmable matrix of logical elements (English Programmable Gate Array, FPGA), etc., and all or part of the functional blocks can be implemented by the specified hardware. For example, processor 1001 may be implemented in at least one of these hardware.

(Modifications)

It should be appreciated that the terms described in the disclosure of the present invention and the terms necessary for understanding the present invention may be replaced by other terms conveying the same or similar meaning. For example, "channel", "symbol", and "signal" (or signaling) can be interpreted interchangeably. In addition, "signals" can be "messages". The reference signal can be abbreviated as RS (Reference Signal) and called pilot, pilot signal, etc. depending on the applicable standard. A Elementary Carrier (EC) may be referred to as a cell, a frequency carrier, a frequency carrier, and so on.

A radio frame may be formed from one or more periods (frames) in the time domain. Each of one or more periods (frames) constituting a radio frame may be referred to as a subframe. Further, a subframe in the time domain may be formed from one or more slots. A subframe may be a time slot of a fixed duration (eg, 1 ms) independent of numerology.

In this context, numerology may refer to a communication parameter applied to at least one of the transmission and reception of a particular signal or channel. For example, the numerology may indicate at least one of subcarrier spacing (SCH), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing performed by the transceiver in frequency area, specific windowing performed by the transceiver in the time domain, and so on.

A slot in the time domain may be formed by one or more symbols (OFDM symbols, SC-FDMA symbols, etc.). The slot can be a temporary element depending on numerology.

A slot may contain a plurality of mini-slots. Each mini-slot in the time domain may be formed from one or more symbols. A mini-slot may be referred to as a sub-slot. A mini-slot may be formed from symbols that are less than the number of slots. PDSCH (or PUSCH) transmission in a tile larger than a mini-slot may be referred to as PDSCH Mapping Type A (PUSCH). PDSCH (or PUSCH) transmission using a mini-slot may be referred to as PDSCH Map Type B (PUSCH).

The radio frame, subframe, slot, mini-slot, and symbol are temporary elements in signaling. The radio frame, subframe, slot, mini-slot, and symbol may be referred to by other suitable names. It should be appreciated that temporal elements such as frame, subframe, slot, minislot, and symbol may be interpreted interchangeably in the present disclosure.

For example, one subframe, multiple consecutive subframes, one slot, or one mini-slot may be referred to as a Transmission Time Interval (TTI). Thus, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1 to 13 symbols), or a period longer than 1 ms. Note that an element representing a TTI may not be referred to as a subframe, but as a slot, mini-slot, or the like.

In this document, TTI is understood to mean, for example, the smallest scheduling time element in a radio communication. For example, in LTE systems, the base station schedules the allocation of radio resources (eg, frequency band and transmission power allowed for use by each user terminal) to the user terminal in units of TTI. The definition of TTI intervals is not limited to this.

The TTIs may be time units for transmitting channel-encoded data packets (transport blocks), code blocks, or codewords, or the TTI may be a processing time unit in scheduling, link adaptation, and so on. It should be appreciated that even with given TTIs, the time interval (eg, number of symbols) for which transport blocks, code blocks and/or codewords are actually mapped may be shorter than these TTIs.

Note that when a TTI is referred to as one slot or one mini-slot, the minimum time element in scheduling may be one or more such TTIs (ie, one or more slots or one or more mini-slots). Moreover, the number of slots (number of mini-slots) constituting this minimum scheduling time element can be controllable.

A TTI with a time duration of 1 ms may be called a regular TTI (TTI in 3GPP Releases 8-12), long TTI, regular subframe, long subframe, slot, and so on. A TTI that is shorter than a regular TTI may 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 subslot, a slot, and the like.

Note that a long TTI (e.g., regular TTI, subframe, etc.) may be interpreted as a TTI with a time duration greater than 1 ms, and a short TTI (e.g., shortened TTI) may be interpreted as a TTI with a duration shorter than the duration of the long TTI and not less than 1 ms.

Resource block (English Resource Block, RB), which is a resource allocation element in the time domain and in the frequency domain, may contain one subcarrier or multiple subcarriers in succession in the frequency domain. The number of subcarriers in a resource block may be the same regardless of the numerology, and may be 12, for example. The number of subcarriers in resource blocks may be determined based on the numerology.

In the time domain, a resource block may contain one symbol or multiple symbols, and may be one slot, one mini-slot, one subframe, or one TTI in length. One TTI, one subframe, etc. may be formed by a single resource block or multiple resource blocks.

It should be noted that one or more resource blocks (RB) can be called a physical resource block (English Physical RB, PRB), sub-carrier group (English Sub-Carrier Group, SCG), group of resource elements (English Resource Element Group, REG ), a pair of PRBs, a pair of RBs, and the like.

Further, a resource block can be formed by a single resource element (English Resource Elements, RE) or multiple REs. For example, one RE may correspond to a radio resource area consisting of one sub-carrier and one symbol.

The Bandwidth Part (BWP; may also be called a partial band, etc.) may be a subset of consecutive uninterrupted common resource blocks (common RBs) for a particular numerology on a particular carrier. In this case, the common RB may be indicated by the RB index with respect to the common reference point of that carrier. The PRB may be defined by a particular BWP and may be numbered within that BWP.

A BWP may contain an uplink BWP (uplink BWP) and a downlink BWP (downlink BWP). One or multiple BWPs may be configured for a UE on a single carrier.

At least one of the configured BWPs may be active, and the UE may assume that a certain signal/channel is not transmitted/received outside of the active BWPs. It should be noted that the terms "cell", "carrier", etc. in this disclosure may be interpreted as "BWP".

It should be appreciated that the above-described configurations of radio frames, subframes, slots, mini-slots, symbols, etc. are only examples. For example, various changes are possible with respect to the number of subframes contained in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots contained in a slot, the number of symbols and RBs contained in a slot or mini-slot, the number of subcarriers contained in a RB, number of symbols in TTI, symbol duration, cyclic prefix (CPU) length, etc.

The information and parameters described in this disclosure may be represented by absolute values or relative values with respect to certain values, or may be represented by other relevant information. For example, radio resources may be indicated by specific indexes.

Names used for parameters, etc. in the present disclosure are not limiting in any respect. Further, mathematical expressions in which these parameters are used, etc. may differ from those expressly disclosed in the present disclosure. For example, since the various channels (PUCCH, PDCCH, etc.) and information elements may be referred to by any suitable names, the various names given to these individual channels and information elements are not limiting in any respect.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, code sequences (chips), etc. that may be encountered in this disclosure may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination of the above.

Information, signals, etc. may be transmitted from higher layers to lower layers and/or from lower layers to higher layers. Information, signals, etc. may be transmitted and/or received through a plurality of network nodes.

Received and/or transmitted information, signals, etc. may be stored in a specific location (eg, in memory), or they may be stored using a control table. Information, signals, etc. to be received and/or transmitted may be overwritten, updated or supplemented. Transmitted information, signals, etc. can be removed. Received information, signals, etc. can be transferred to another device.

The communication of information is in no way limited to the aspects/implementations described in this disclosure, and other methods may be used. For example, the communication of information in the present invention can be performed by using physical layer signaling (e.g., downlink control information (DCI), uplink control information (UCI)), upper layer signaling (e.g., radio resource control (RRC) layer signaling), broadcast information (Basic Information Block (MIB), System Information Blocks (SIB), etc.), Media Access Layer (MAC) signaling, other signals, and/or combinations thereof.

Physical layer signaling may be referred to as LI/1 control information/L1/L2 control signals) (English Layer 2(L1/L2, layer 1/layer 2), L1 control information (L1 control signal), etc. RRC layer signaling may be called an RRC message, and this signaling may be, for example, an RRC connection establishment message, an RRC connection reconfiguration message, etc. MAC layer signaling may be transmitted using, for example, MAC control elements (MAC control element, MAC CE ).

The message of some information (for example, the message that X does not change) does not have to be communicated explicitly, but can be communicated implicitly (by, for example, not reporting this certain information or by reporting another piece of information).

Tests can be performed on values represented by a single bit (0 or 1), on Boolean values representing true or false, or by comparing numeric values (for example, by comparing against some value).

Software, whether called "program", "internal program", "middleware", "microcode", "hardware description language" or otherwise, should be understood in a broad sense, covering instructions, sets instructions, code, code segments, program codes, programs, subroutines, program modules, applications, software applications, software packages, objects, executable files, threads of execution, procedures, functions, etc.

Programs, commands, information, and the like may be transmitted and received via the communication medium. For example, if a program is transmitted from a website, server, or other remote source using at least one of the wired technologies (coaxial cables, fiber optic cables, twisted-pair cables, Digital Subscriber Lines, DSL), etc.) and wireless technologies (infrared radiation, microwaves, etc.), then at least one of these wired and/or wireless technologies is also included in the concept of a communication medium.

The terms "system" and "network" as used in this disclosure may be used interchangeably. "Network" may mean a device (eg, a base station) that is part of a network.

In the present disclosure, terms such as "precoding", "precoding device", "weight (weight in precoding)", "quasi-proximity" (English Quasi-Co-Location, QCL), "indicator status transmission configuration" (TCI status), "spatial relationship", "spatial domain filter", "transmit power", "phase rotation", "antenna port", "antenna port group", "level", "number of levels", " rank, resource, resource set, resource group, beam, beamwidth, beam angle, antenna, antenna element, panel, etc. can be used interchangeably.

In this disclosure, terms such as "base station)" , “access point”, “transmission point” (eng. Transmission Point, TP), “reception point” (eng. Reception Point, RP), “transmitting / receiving point” (eng. Transmission / Reception Point, TRP), “ panel", "cell", "sector", "cell group", "carrier", "unit carrier" may be used interchangeably. Base station may be referred to by terms such as "macro cell", "small cell", "femto cell" ”, “pico cell”, etc.

The base station may be configured to serve one or more (e.g., three) cells. stations, for example, small base stations for premises (remote radio units, eng. Remote Radio Head). The term "cell" or "sector" refers to part or all of the coverage area of a base station and/or a subsystem of a base station providing communication services in that coverage area.

In the present disclosure, the terms "mobile station" (English Mobile Station, MS), "user terminal", "user device (UE)" and "terminal" can be used interchangeably.

A mobile station may be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote unit, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, telephone handset, user agent, mobile client, client and, in some cases, some other suitable terms.

At least one of the base station and the mobile station may be called a transmitter, a receiver, a radio communication device, and so on. It should be appreciated that at least one of the base station and the mobile station may be a device mounted on a mobile unit, the mobile unit itself, and so on. The specified moving object can be a vehicle (for example, a car, an airplane, etc.), a moving object, the movement of which is carried out without a pilot on board (for example, a drone, a car without a driver, etc.) or a robot (controlled by human type or unmanned type). It should be appreciated that the meaning of at least one of the terms "base station" and "mobile station" also includes a device that does not necessarily move during a communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor or the like.

The base station in the present disclosure can be interpreted as a user terminal. For example, each aspect/implementation of the present invention, instead of a configuration in which communication is carried out between a base station and a user terminal, may be applied to a configuration in which communication is carried out between a plurality of user terminals (for example, this type of communication may be called device communication). -to-Device, D2D), communication between a vehicle and a wide range of objects (Vehicle-to-Everything, V2X), etc.). In this case, the user terminals 20 may perform the functions of the base stations 10 described above. The words "upstream" and "downstream" may be interpreted as corresponding to terminal-to-terminal communications (eg, as "referring to direct communications"). For example, uplink, downlink, etc. can be interpreted as a direct channel.

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

The actions described herein as being performed by a base station may, in some cases, be performed by older nodes. Obviously, in a network containing one or more network nodes with base stations, various operations performed to communicate with terminals can be performed by base stations, one or more network nodes other than base stations (for example, mobility management nodes (eng. Mobility Management Entity, MME), serving gateways (English Serving-Gateway, S-GW), etc., but this list is not limiting) or combinations of the listed nodes.

The aspects/implementations illustrated in this disclosure may be used singly or in combination, which may vary depending on the preferred implementation. The order of operations, sequences, block diagrams, etc. used in this disclosure to describe aspects/implementations may be changed if this does not lead to inconsistencies. For example, while the various methods are illustrated in the present disclosure with various components of the steps in the order given by way of example, the specific order presented here is in no way limiting.

Aspects/implementations illustrated in this disclosure may apply to LTE, LTE-A, LTE-B, SUPER 3G, IMT-Advanced, fourth generation (4G) mobile communication system, fifth generation (5G) mobile communication system, future Radio Access (FRA), New Radio Access Technology (RAT), New Radio System (New Radio, NR), New Radio Access (NX), Future Generation Radio Access, FX ), to the Global System for Mobile communications (GSM (registered trademark)), to the CDMA2000 system, to the Ultra Mobile Broadband (UMB) system, to the IEEE 802.11 (Wi- Fi (registered trademark)), IEEE 802.16 (Wi-MAX (registered trademark)), IEEE 802.20, to a short range communication system using ultra-low spectral density wideband signals (Ultra-Wide Ba nd, UWB), to the Bluetooth system (registered trademark), to systems using other suitable radio communication methods, and to next-generation systems improved on these systems. Multiple systems can be combined and used (eg combination of LTE or LTE-A and 5G, etc.).

In this disclosure, the phrase "based on" (or "based on") does not mean "only based on" (or "only based on"), unless otherwise indicated. In other words, the phrase "on the basis of" (or "on the basis of") means both "on the basis of" and "on the basis of at least" ("only on the basis of" and "at least on the basis of").

Referencing elements using designations such as "first", "second", etc. the present disclosure does not generally limit the number or order of these elements. These designations may be used in the present disclosure for convenience only, as a way to distinguish between two or more elements. Thus, the mention of the first and second elements does not imply that only two elements can be used, or that the first element must in any way precede the second element.

The term "decision" ("determination") in the present disclosure can cover a wide variety of actions. For example, “decision” (“determining”) can be interpreted as making decisions (carrying out checks) related to judgment, calculation, calculation, processing, inference, research, search, search and query (for example, search in a table, database or some other data structure), establishing a fact, etc.

Further, the term “decision” (“determining”) can be interpreted as meaning making decisions (carrying out checks) related to receiving (for example, receiving information), transmitting (for example, transmitting information), input, output, access (for example, access to data in memory), etc.

In addition, the term "decision" ("determining") in this document can be interpreted as meaning making decisions (carrying out checks) related to disambiguation, selection, selection, establishment, comparison, etc. In other words, "decision" ("determination") can be interpreted as making decisions (carrying out checks) about the performance of some action.

In addition, “decision” (“determination”) can be interpreted as “guess”, “expectation”, “consideration”, etc.

"Highest transmit power" according to the present disclosure may mean the highest transmit power value, may mean the nominal highest transmit power (nominal highest transmit power of the UE), or may mean the normative highest transmit power (the normative highest transmit power of the UE).

In this disclosure, the terms "connected", "connected" and any of their options means all direct or indirect connections or connections between two or more elements, and may allow the presence of one or more intermediate elements between two elements that are "connected" or "connected" between themselves. The relationship or connection between these elements may be physical, logical, or a combination of both. For example, "connection" can be interpreted as "access".

When the present disclosure indicates that two elements are connected, the two elements may be considered to be connected or interconnected using one or more electrical conductors, cables, and printed electrical connections, and, as a few non-limiting and non-exclusive examples, using electromagnetic energy, having wavelengths in radio frequency bands, microwave bands and optical (both visible and invisible) bands, or the like.

In the present disclosure, the expression "A and B are different" can mean "A and B are different from each other." Note that this expression can mean "both A and B are different from C". The terms "separate", "be connected", etc. can be interpreted similarly to the term "various".

When used in the present disclosure, for example, terms such as "include", "comprising" and variations thereof, these terms should be understood in a content sense similar to that in which the term "comprising" is used. The conjunction "or" in this disclosure is not to be understood as meaning an exclusive disjunction.

In the present disclosure, when an article such as "a", "an" and "the" is added in English translation, the noun after the said article can be interpreted as containing the plural value as well.

Now, while the present invention has been described in detail above, it should be apparent to those skilled in the art that the invention according to the present disclosure is in no way limited to the implementations described in this disclosure. The invention according to the present disclosure can be carried out with various changes and in various modifications without deviating from the spirit and scope of the present invention as defined by the claims. Accordingly, the description of the present disclosure is provided for illustrative purposes only and should in no way be construed as limiting the present invention in any way.

Claims (16)

1. Terminal containing: a receiving section, configured to receive a Radio Resource Control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval of a subslot unit; And a control section configured to control, based on the specified RRC layer parameter, to transmit in the slot a plurality of uplink control channels (PUCCHs) for HARQ-ACK per subslot unit. 2. The terminal of claim 1, further comprising a transmission section configured to transmit capability information indicating support for the fractional value of the HARQ-ACK timeslot value of one subslot. 3. The terminal according to claim 1 or 2, wherein the RRC level parameter indicates a fractionality in 2 symbols or 7 symbols. 4. A radio communication method for a terminal, comprising: receiving a Radio Resource Control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment interval value of a subslot unit; And controlling, based on the specified RRC layer parameter, to transmit in the slot a plurality of uplink control channels (PUCCHs) for the HARQ-ACK per subslot unit. 5. Base station, containing: a transmission section, configured to transmit a Radio Resource Control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval of a subslot unit; And a control section configured to control, based on the specified RRC layer parameter, to receive a plurality of uplink control channels (PUCCHs) for HARQ-ACK per slot unit. 6. A radio communication system containing a terminal and a base station, in which the terminal contains: a receiving section, configured to receive a Radio Resource Control (RRC) layer parameter indicating a fractional value of a hybrid automatic repeat request (HARQ-ACK) acknowledgment time interval of a subslot unit; And a control section configured to control, based on the specified RRC layer parameter, to transmit in the slot a plurality of uplink control channels (PUCCHs) for HARQ-ACK per subslot unit; And base station contains: a transmission section configured to transmit said RRC layer parameter.

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