RU2789180C1 - User terminal and method for radio communication - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: invention relates to next generation mobile communication systems. User terminal includes a control section configured to define a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook containing only HARQ-ACK information bits corresponding to a physical downlink shared channel (PDSCH) with semi-permanent scheduling (SPS), so that the HARQ-ACK information bits corresponding to the PDSCH of each SPS are, first, ordered by the earliest SPS reception; second, ordered by the smallest SPS configuration index; and third, ordered by the smallest serving cell index. The transmission section is configured to transmit the HARQ-ACK information corresponding to the HARQ-ACK codebook using a physical uplink control channel (PUCCH).

EFFECT: possibility of HARQ-ACK feedback even when multiple semi-persistent schedulings SPS are used.

5 cl, 31 dwg

Description

The field of technology to which the invention belongs

[0001] The present invention relates to a user terminal and a radio communication method in next generation mobile communication systems.

State of the art

[0002] In the Universal Mobile Telecommunications System (UMTS) network, a Long Term Evolution (LTE) scheme specification has been proposed to further increase the data rate, provide lower latency, etc. .d. (see non-patent document 1). In addition, in order to further increase the capacity, and further improve over LTE (Third Generation Partnership Project (3GPP) versions 8 and 9), the LTE Advanced Scheme Specification: LTE-Advanced (3GPP versions 10-14) has been developed.

[0003] LTE successor systems are also being studied (also called, for example, "5th generation mobile communication system (5G)", "5G+ (plus)", "new radio (NR, from New Radio)", " 3GPP version 15 (or later)", etc.).

List of cited literature

Non-Patent Documents

[0004] Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)", April 2010 ("Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); General Description; Phase 2 (Release 8)", April 2010)

Disclosure of the essence of the invention

Technical problem

[0005] Future radio communication systems (eg, NR) use semi-persistent scheduling (SPS) transmission and reception.

[0006] In the current NR Release 15 specifications, SPS is not configured simultaneously for more than one serving cell per cell group (in other words, one SPS configuration per cell group).

[0007] In particular, for version 16 (or later), NR is studying configuring multiple SPS (multiple SPS) in one cell group for more flexible control. The current NR version 15 SPS cycle is at least 10 ms, but the introduction of an SPS cycle with a shorter cycle (eg, a given number of character units, slot units, and the like) is also being studied.

[0008] In this case, it is required that one HARQ-ACK codebook contains more than one piece of transmission acknowledgment information (for example, hybrid automatic repeat request (HARQ-ACK) acknowledgments AC Knowledge me nt) ) for the set of SPS. However, studies on the configuration of a HARQ-ACK codebook associated with a plurality of SPS, determination of an uplink control channel (PUCCH) resource for transmitting a codebook, and the like have not advanced far. Until they are clearly defined, appropriate HARQ control is not available when using multiple SPS, and, for example, communication throughput may be degraded.

[0009] Thus, the purpose of the present disclosure is to provide a user terminal and a radio communication method that can properly transmit HARQ-ACK back even when multiple SPS are used.

Solution

[0010] A user terminal in accordance with an aspect of the present disclosure includes a control section configured to generate a hybrid automatic repeat request (HARQ-ACK) acknowledgment codebook containing only a HARQ-ACK corresponding to a downlink common channel (PDSCH). .Physical Downlink Shared Channel) with semi-persistent scheduling (SPS) such that the HARQ-ACK bits corresponding to the PDSCH of each SPS PDSCH are ordered according to a predetermined rule, and a transmission section configured to transmit the HARQ-ACK information bit corresponding to the codebook HARQ-ACK using the SPS-based uplink control channel resource corresponding to the HARQ-ACK at a specific location in the order (row).

Beneficial Effects of the Invention

[0011] According to one aspect of the present disclosure, HARQ-ACK reverse transmission can be appropriately performed even when multiple SPS are used.

Brief description of the drawings

[0012] Figure 1 is a diagram showing an example of a technical problem in the case where multiple SPS are used;

2A and 2B are diagrams showing another example of a technical problem in the case where multiple SPS are used;

3A and 3B are diagrams showing an example of a HARQ-ACK bit order according to Embodiment 1-1;

4A and 4B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-1;

5A and 5B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-1;

6A and 6B are diagrams showing an example of the HARQ-ACK bit order according to Embodiment 1-2;

7A and 7B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-2;

8A and 8B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-2;

9A and 9B are diagrams showing an example of PUCCH resources according to Embodiment 2-1;

10A and 10B are diagrams showing another example of PUCCH resources according to Embodiment 2-1;

11A and 11B are diagrams showing another example of PUCCH resources according to Embodiment 2-1;

12A and 12B are diagrams showing an example of PUCCH resources according to Embodiment 2-1;

13A and 13B are diagrams showing another example of PUCCH resources according to Embodiment 2-1;

14A and 14B are diagrams showing another example of PUCCH resources according to Embodiment 2-1;

Fig. 15 is a diagram showing an example of a schematic structure of a radio communication system according to one embodiment;

Fig. 16 is a diagram showing an example of the structure of a base station according to one embodiment;

Fig. 17 is a diagram showing an example of a structure of a user terminal according to one embodiment; And

18 is a diagram showing an example of a hardware structure of a base station and a user terminal according to one embodiment.

Implementation of the invention

[0013] NR uses semi-persistent scheduling (SPS) transmission and reception. In the present disclosure, SPS and downlink (DL) SPS may be interpreted interchangeably.

[0014] The user device (UE, from the English user's equipment) can activate or deactivate (release) the SPS configuration based on the downlink control channel (physical downlink control channel (PDCCH, from the English Physical Downlink Control Channel)). The UE may perform, based on the activated SPS configuration, receiving a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) with the corresponding SPS.

[0015] It should be noted that in the present disclosure, the PDCCH may be interpreted as downlink control information (DCI) transmitted using the PDCCH, or may simply be interpreted as DCI, etc.

[0016] A DCI for activating or deactivating an SPS configuration may be called an SPS activation DCI, an SPS deactivation DCI, and so on. The SPS deactivation DCI may be referred to as the SPS release DCI, or may simply be referred to as SPS release, and so on.

[0017] A DCI may have cyclic redundancy check (CRC) bits scrambled with a given RNTI (eg, configured scheduling radio network temporary identifier (CS-RNTI)).

[0018] The UE may activate or release the SPS configuration based on the DCI (SPS activation DCI or SPS release DCI).

[0019] The SPS configuration (which may be referred to as SPS-related configuration information) may be configured for the UE using higher layer signaling.

[0020] In the present disclosure, higher layer signaling can be, for example, any one or combination of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling , broadcast information, and the like.

[0021] The MAC signaling may use, for example, a MAC control element (MAC CE, from the English MAC control element), a MAC protocol data unit (PDU, from the English Protocol Data Unit), or the like. The broadcast information may be, for example, a master information block (MIB), a system information block (SIB), minimum system information (remaining minimum system information (RMSI), Remaining Minimum System Information)), other system information (OSI, from other system information) or the like.

[0022] The configuration information associated with the SPS (e.g., "SPS-Config" information element for RRC) may include an index (SPS index) for identifying the SPS, information (e.g., SPS cycle) associated with the SPS resource, information related to the PUCCH resource for the SPS, and the like. It should be noted that the information associated with the PUCCH resource for the SPS may correspond to, for example, the RRC parameter "n1 PUCCH-AN", and this parameter may indicate a PUCCH resource identifier (ID).

[0023] The SPS may be configured for a special cell (SpCell) (eg, primary cell (PCell) or primary secondary cell (PSCell)) or may be configured for a secondary cell (SCell). It should be noted, however, that in the current NR Release 15 specifications, SPS is not configured simultaneously for more than one serving cell per cell group (in other words, one SPS configuration per cell group).

(HARQ-ACK code book)

[0024] The UE may, using a single PUCCH resource, send back a hybrid automatic repeat request (HARQ-ACK) acknowledgment in a HARQ-ACK codebook block consisting of bit(s) of one or more pieces of transmission acknowledgment information (e.g., HARQ -ACK). The HARQ-ACK bits may be referred to as HARQ-ACK information, HARQ-ACK information bits, and so on.

[0025] Here, the HARQ-ACK codebook may contain a bit for the HARQ-ACK in at least one unit of the time domain (e.g., slot), frequency domain (e.g., component carrier (CC)), spatial domain (for example, a layer), a transport block (TV, from the English transport block) and a group of code blocks (CBG, from the English code block group) that makes up the TV. The HARQ-ACK codebook may simply be referred to as a codebook.

[0026] It should be noted that the number (size) of bits contained 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 may be referred to as a semi-static HARQ-ACK codebook, type 1 HARQ-ACK codebook, and so on. A dynamically sized HARQ-ACK codebook may be referred to as a dynamic HARQ-ACK codebook, type 2 HARQ-ACK codebook, and so on.

[0027] Which of the HARQ-ACK type 1 codebook and HARQ-ACK type 2 codebook is used can be configured for the UE with a higher layer parameter (eg, pdsch-HARQ-ACK-Codebook).

[0028] In the case of a HARQ-ACK type 1 codebook, the UE may send back, in a given range (e.g., a range configured based on a higher layer parameter), HARQ-ACK bits for a PDSCH candidate (or probable PDSCH) corresponding to a given range, regardless of the presence or absence of PDSCH scheduling.

[0029] The predetermined range may be determined based on at least one of a predetermined period (e.g., a set of a predetermined number of PDSCH candidate reception cases or a predetermined number of PDCCH tracking cases), the number of CCs configured or activated for the UE, the number of TVs (the number of layers or ranks), the number of CBGs on TV, and the presence or absence of spatial pooling. The given range may be referred to as a HARQ-ACK window, a HARQ-ACK combining window, a HARQ-ACK reverse transmission window, and so on.

[0030] In the case of a HARQ-ACK type 1 codebook within a given range, even if there is no PDSCH scheduling for the UE, the UE reserves a bit for the PDSCH in the codebook. When the UE determines that the PDSCH is not actually scheduled, the UE may reverse-transmit the bit as a NACK bit.

[0031] On the other hand, in the case of a type 2 HARQ-ACK codebook, the UE may reverse-transmit, in the above-described given range, the HARQ-ACK bits for the scheduled PDSCH.

[0032] In particular, the UE may determine the number of bits of the HARQ-ACK type 2 codebook based on a predetermined field (for example, a Downlink Assignment Indicator (DAI) field in DCI. The DAI field may include a counting (counter) DAI (C-DAI, from the English counter DAI) and a total DAI (T-DAI, from the English total DAI).

[0033] The C-DAI may indicate a counter value for a downlink transmission (PDSCH, data, or TV) scheduled within a given period. For example, C-DAI in DCI for scheduling data within a given period may indicate the number of samples obtained by counting first in the frequency domain (eg, CC) and then in the time domain within a given period. For example, the C-DAI may correspond to a value obtained by counting PDSCH receptions or SPS releases first in ascending order of serving cell indices and then in ascending order of PDCCH tracking occurrences with respect to one or more DCI portions included in a given period.

[0034] T-DAI may indicate the amount (total amount) of data scheduled within a given period. For example, T-DAI in DCI for scheduling data in a given unit of time (e.g., PDCCH tracking cases) within a given period may indicate the total amount of data scheduled within a given period up to a specified unit of time (called a point, point in time, etc.). .).

(SPS and HARQ-ACK code book)

[0035] In the current NR version 15, the order of the HARQ-ACK bits in the codebook is determined as described below. With regard to the type 1 HARQ-ACK codebook, the UE arranges the HARQ-ACK bits corresponding to the PDSCH SPS and the SPS release in the HARQ-ACK codebook similarly to the HARQ-ACK bits corresponding to the dynamic PDSCH (e.g., according to a list (table) pertaining to the assignment of time domain resources). There is no difference between SPS PDSCH processing, SPS release, and dynamic PDSCH corresponding to a PDSCH reception occurrence within a predetermined period.

[0036] It should be noted that dynamic PDSCH may mean a PDSCH scheduled using DCI (eg, DCI format 1_0, 1_1 or the like) dynamically.

[0037] In the current NR version 15, with respect to the type 2 HARQ-ACK codebook, the UE may position the HARQ-ACK bits corresponding to the PDSCH SPS after the HARQ-ACK codebook corresponding to the TV-based dynamic PDSCH.

[0038] Moreover, in the current Release 15 NR, the UE does not expect the HARQ-ACK information to receive more than one SPS PDSCH to be transmitted on the same PUCCH.

[0039] It should be noted that in the current NR version 15, the HARQ-ACK bits corresponding to the PDSCH SPS may be located after the HARQ-ACK codebook corresponding to the TV-based dynamic PDSCH.

[0040] In the existing Release 15 NR, when a UE transmits HARQ-ACK bits corresponding to PDSCH reception only without a corresponding PDCCH, a PUCCH resource for PUCCH transmission corresponding to the HARQ-ACK information can be identified by RRC parameter "n1 PUCCH-AN".

[0041] In particular, for version 16 (or later), NR is studying configuring multiple SPS (multiple SPS) in one cell group for more flexible control. The UE may use multiple SPS configurations for one or multiple serving cells. The SPS cycle of the current Release 15 NR is at least 10 ms, but implementation of an SPS cycle with a shorter cycle (eg, a given number of symbol units, slot units, and the like) is also being studied.

[0042] In this case, more than one HARQ-ACK information for multiple SPS may be required to be contained in one HARQ-ACK codebook. However, studies on how to configure a HARQ-ACK codebook associated with a plurality of SPSs have not yet progressed. If the HARQ-ACK codebook associated with the SPS is not clearly defined, the corresponding HARQ control is not available when using the SPS, and communication throughput may be degraded and the like.

[0043] FIG. 1 is a diagram showing an example of a technical problem in the case where a plurality of SPSs are used.

[0044] In the present assumption, the UE has multiple SPS configurations (SPS configurations 1 and 2) with respect to two serving cells (SS 0 and 1). The SPS configuration 1 in FIG. 1 refers to receiving the SPS PDSCH in the first SPS cycle, and in this regard, FIG. 1 shows SPS PDSCHs for component carriers CCs 0 and 1 (SPS PDSCH #1 and #2, respectively) in a slot 2. Thus, the reception of the SPS PDSCH with respect to multiple CC component carriers can be scheduled with one SPS configuration.

[0045] It should be noted that for each SS in figure 1, it can be assumed that the spacing under the carrier (SCS, from English sub-carrier spacing) = 15 kHz (in other words, slot length = 1 ms). For other drawings of the present disclosure, it can be assumed that the SCS for the CC, which is not specifically described, = 15 kHz. It should be noted that in the respective drawings of the present disclosure, each of slots 0 to 9 may indicate the slot number of the CC component carrier corresponding to SCS = 15 kHz.

[0046] The SPS configuration 2 in Fig. 1 refers to the reception of the SPS PDSCH in the second SPS cycle (which may be the same as the first SPS cycle or may be different from the first SPS cycle), and in this regard, Fig. 1 shows the SPS PDSCH for CC 0 (SPS PDSCH #3) in slot 5. In the present disclosure, the SPS PDSCH may simply be described as SPS.

[0047] SPS configurations 1 and 2 have already (before depicted slot 0) been activated by DCI. In other words, SPS #1-#3 in FIG. 1 correspond to a PDSCH SPS not associated with an activation DCI.

[0048] The HARQ-ACK transmission time point (which may be referred to as the PDSCH-HARQ reverse transmission time point, K1, etc.) for a PDSCH SPS not associated with an activation DCI may be identified by the PDSCH-HARQ reverse transmission time indicator field included in the activation DCI that activated the SPS.

[0049] The PDSCH-HARQ reverse transmission time point corresponds to the HARQ time point indicator field corresponding to the PDSCH. If the last slot in which the PDSCH was received is n, the UE may send a HARQ-ACK corresponding to the PDSCH in slot n+K1. It should be noted that the PDSCH-HARQ reverse transmission time may be referred to as the PDSCH-HARQ-ACK reverse transmission time.

[0050] For example, PDSCH-HARQ reverse transmission time indicator values of 0 to 7 included in DCI format 1_0 may correspond to K1 = 1-8 [slot], respectively.

[0051] A value indicating the number of slots configured by higher layer signaling (RRC parameter "dl-DataToUL-ACK") may be determined for each of the PDSCH-HARQ reverse time indicator values from 0 to 7 included in the format 1_1 DCI.

[0052] It should be noted that the designation of the above-described PDSCH-HARQ reverse transmission timing is not limited to a block of slots, and may be performed, for example, in a block of mini-slots. Inclusion of more than one HARQ-ACK information for a plurality of SPSs in one HARQ-ACK codebook may also be performed in a mini-slot block.

[0053] Figure 1 assumes that assigned: K1 = 6 with respect to SPS #1 and #3 and K1 = 3 with respect to SPS #2.

[0054] In the present disclosure, all SPS PDSCHs are retransmitted (retransmitted) on a TV basis for simplicity, but may be retransmitted on a CBG basis. For example, an SPS PDSCH in a TV-based cell (in other words, a cell in which TV-based retransmission is configured) may be retransmitted based on TV. The SPS PDSCH in a CBG-based cell (in other words, a cell in which CBG-based retransmission is configured) may be retransmitted based on CBG. The maximum number of transport blocks (TB) of each component carrier (CC) may be, for example, 1.

[0055] In slot 0 of component carrier (CC) 0, the UE receives DCI format 1_1 to receive PDSCH #1 based on DCI. The DCI may indicate that K1 = 8. For example, this DCI may include (C-DAI, T-DAI) = (1, 1). Each DAI value, the corresponding K1 value, and the like are not limited to this.

[0056] It should be noted that PDSCH #1 may be interpreted as a PDSCH scheduled by DCI format 1_0. This DCI may include (C-DAI)=(1). DCI format 1_1 in FIG. 1 may be interpreted as downstream DCI and upstream grant, or may simply be interpreted as DCI, and so on. Format 1_1 DCI in the following drawings can also be interpreted in a similar way.

[0057] The UE receives SPS #1 in CC slot 2 0, receives SPS #2 in CC slot 2 1, and receives SPS #3 in CC slot 5 0. FIG.

The UE transmits all HARQ-ACKs for PDSCH #1 and SPS #1-#3 using the PUCCH resource in slot 8 of component carrier (CC) 0.

[0058] However, studies on how to arrange the HARQ-ACK bit order for SPS in the HARQ-ACK codebook in the case where multiple SPS configurations are active, such as the case in Fig. 1, and HARQ-ACK acknowledgments for the corresponding SPS configurations are transmitted over the same PUCCH, have not progressed yet.

[0059] FIGS. 2A and 2B are diagrams showing another example of a technical problem in the case where a plurality of SPSs are used.

[0060] FIG. 2A shows an example similar to FIG. 1 but different from FIG. 1 with respect to PDSCH #1 that is not scheduled in slot 0 of component carrier (CC) 0. In other words, the HARQ-ACK codebook for PUCCH 2A contains only HARQ-ACK acknowledgments for the SPS. In this case, the possibility of obtaining a resource for PUCCH from receiving a specific (eg, first or last) PDSCH SPS associated with the HARQ-ACK codebook is being explored.

[0061] FIG. 2B is a diagram showing an example of a PUCCH resource that can be used as the PUCCH in FIG. 2A. PUCCH resources #1 and #2 correspond to, for example, RRC parameters "n1PUCCH-AN" for SPS configurations 1 and 2, respectively. In the present example, the PUCCH resource #1 temporary resource is symbols #0 and #1 in the slot, and the PUCCH resource #2 temporary resource is symbols #2 to #13 in the slot, but the PUCCH resources to be configured are not limited to this. For example, the PUCCH resources corresponding to the SPS patterns may overlap with each other in at least one of the time domain and the frequency domain.

[0062] However, this particular SPS PDSCH reception is required to be more specifically defined. This is because, for example, "first reception of the SPS PDSCH" does not give a clear idea of what "first" means. Accordingly, in the case of FIG. 2A, the UE cannot determine which of the PUCCH resources in FIG. 2B is being used.

[0063] As described above, studies on the HARQ-ACK codebook configuration associated with the SPS set, PUCCH resource determination for codebook transmission, and the like have not yet progressed. Until they are clearly defined, appropriate HARQ control is not available when using multiple SPS, and, for example, communication throughput may be degraded.

[0064] Thus, the inventors of the present invention came up with the idea of a method for appropriate HARQ-ACK feedback even when multiple SPS are used.

[0065] Embodiments in accordance with the present disclosure will be described in detail below with reference to the drawings. The radio communication methods according to the respective embodiments may be used singly or may be used in combination.

[0066] In the present disclosure, the codebook is assumed to be a type 2 HARQ-ACK codebook, but it can be interpreted as a type 1 HARQ-ACK codebook.

[0067] It should be noted that in the present disclosure, a PDSCH SPS associated with an activation DCI may refer to the first PDSCH SPS activated (initiated) by an activation DCI. The SPS PDSCH associated with the activation DCI may be referred to as the SPS PDSCH having the associated DCI, the SPS PDSCH with the corresponding PDCCH, the SPS PDSCH indicated by the DCI, and so on.

[0068] At least one of a frequency resource, a time resource, and a modulation and coding scheme (MCS) for the PDSCH SPS associated with the activation DCI can be determined based on at least one of the following: frequency resource assignment fields, time resource assignment fields, and MCS index for DCI activation.

[0069] In the present disclosure, a PDSCH SPS not associated with an activation DCI may refer to a second or subsequent PDSCH SPS activated by an activation DCI. An SPS PDSCH not associated with an activation DCI may be referred to as an SPS PDSCH without an associated DCI, an SPS PDSCH without a corresponding PDCCH, and so on.

[0070] In the present disclosure, the SPS PDSCH may be interchangeably interpreted as receiving the SPS PDSCH. The normal PDSCH (dynamic PDSCH), which is not an SPS PDSCH, is described as a TV-based PDSCH, but the present disclosure is not limited to this.

[0071] The present disclosure shows an example where the UE transmits the PUCCH in CC 0, but the PUCCH may be transmitted in another CC such as CC 1. The CC for PUCCH transmission may be assigned (configured) based on the DCI (e.g., activation DCI) , RRC signaling, and the like, or may be determined based on the PDSCH SPS or SPS configuration to determine the PUCCH resource.

(Radio communication method)

<First Embodiment>

[0072] The first embodiment relates to the order of the HARQ-ACK bits for SPS in one HARQ-ACK codebook.

[0073] In the first embodiment, the bit order for PDSCH SPSs associated with a HARQ-ACK codebook transmitted on the same PUCCH can be determined by applying the following rules (1) to (3) in arbitrary order:

(1) Earlier SPS case first (in order from earliest SPS case),

(2) First the smaller CC (in other words, the carrier with the lower CC index) (in order from the smallest CC), and

(3) Lower SPS index first (in order from the smallest SPS index).

[0074] It should be noted that "earlier" in these rules may be interpreted as "later", and "smaller" in these rules may be interpreted as "greater". The SPS index can be interchangeably interpreted as an SPS configuration index, and so on.

[0075] The first embodiment will be described in more detail using the following embodiments.

[Embodiment 1-1]

[0076] In Embodiment 1-1, the HARQ-ACK bits for receiving an SPS PDSCH with no associated DCI may be arranged first in ascending order of serving cell indices, and then in descending order of PDSCH-HARQ reverse transmission time points (described above (2) -> (1)).

[0077] FIGS. 3A and 3B are diagrams showing an example of a HARQ-ACK bit order according to Embodiment 1-1. FIG. 3A shows an example similar to FIG. 1, but different from FIG. 1 with respect to the HARQ-ACK bit order for the PDSCH SPS, which is shown by dotted arrows. It should be noted that the dotted arrows of the present disclosure are illustrated by extracting only the part for descriptions and thus may actually be much longer (there may be, for example, arrows that scan from the part corresponding to K1 = 8 to the part corresponding to K1 = 1 in the present example).

Следует отметить, что в настоящем описании тильда (~), добавленная над

(где к - целое число), опущена для простоты, но это взаимозаменяемо интерпретируется как обозначение с тильдой, как показано на чертежах. Следует отметить, что o_k ^ACK может означать HARQ-ACK для PDSCH с C-DAI = k + 1 в кодовой книге на основе ТВ.[0078] FIG. 3B is a diagram showing the contents of each bit for the HARQ-ACK codebook corresponding to FIG. 3A. 3B shows a total of 4 bits from

It should be noted that in the present description, the tilde (~) added above

(where k is an integer) is omitted for simplicity, but this is interchangeably interpreted as a notation with a tilde as shown in the drawings. It should be noted that o _k ^ACK may mean HARQ-ACK for PDSCH with C-DAI = k + 1 in the TV-based codebook.

[0079] The UE may arrange the HARQ-ACK bits (if any) corresponding to the normal PDSCH (PDSCH #1 in FIG. 3B) at the beginning of the HARQ-ACK codebook in sequence from the largest K1 (eg, K1 = 8) to the smallest K1 (e.g. K1 = 1) same as version 15.

[0080] The HARQ-ACK bits corresponding to the PDSCH SPS not associated with the activation DCI may be located in the tail of the HARQ-ACK bits for the TV-based PDSCH. The HARQ-ACK bits corresponding to the SPS may be sequential, an earlier (smaller) CC index and an earlier (smaller) SPS instance.

соответствуют следующему:[0081] In the case shown in Fig. 3B,

match the following:

[0082] FIGS. 4A and 4B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-1. 4A, three SPS configurations are configured for the UE in total: two SPS configurations (SPS configurations 1 and 2) relative to CC 0 and one SPS configuration (SPS configuration 3) relative to CC 1. SPS configurations 1, 2, and 3 correspond to SPS cycles. = 5, 2 and 10 ms, respectively.

[0083] The UE assumes that each illustrated PDSCH SPS can be received, but only the SPS #1 - #3 shown in FIG. 4A have actually been transmitted. In other words, the UE assumes that the transmission was not made at the SPS resource (time point) having no symbol (the UE did not receive this SPS PDSCH). In the following examples, it can also be assumed that the SPS was not transmitted in an SPS resource that does not have a symbol.

[0084] The present disclosure describes the case where the UE generates a HARQ-ACK for an SPS PDSCH that was received during the period corresponding to the PUCCH and does not generate a HARQ-ACK for an SPS PDSCH that was not received, but the UE may appropriately generate a HARQ-ACK codebook based on the descriptions of the present disclosure, even when the last HARQ-ACK is generated.

[0085] FIG. 4A corresponds to the case where the SCS (which may be referred to as the upstream SCS) for the CC (CC 0) for PUCCH transmission is larger than the SCS (which may be referred to as the downstream SCS) for the other CC (CC 1) in which the SPS is configured. In other words, FIG. 4A corresponds to the case where the numerologies are different between CCs. In FIG. 4A, the SCS for CC 0 is 30 kHz and the SCS for CC 1 is 15 kHz. It should be noted that it can be said that the aforementioned Fig. 3A corresponds to the case where these parts of the SCS are the same.

[0086] K1 shown in FIG. 4A may correspond to a value based on CC slot 0 for PUCCH transmission. SPS #1 corresponds to K1 = 6, and SPS #2 corresponds to K1 = 5. The slot end for SPS #3 overlaps with the slot for SPS #2, and thus SPS #3 corresponds to K1 = 5. Note that K1 may be converted from a value (eg, K1 = 3 with respect to SPS #3 in FIG. 4A) based on the slot of each CC to receive the SPS PDSCH, to the value described above.

[0087] According to the rule of embodiment 1-1, the order of the HARQ-ACK bits for the PDSCH SPS in FIG. 4A is as shown by dashed arrows.

соответствуют следующему:[0088] FIG. 4B is a diagram showing the contents of each bit for the HARQ-ACK codebook corresponding to FIG. 4A. In the case shown in Fig. 4B,

match the following:

[0089] FIGS. 5A and 5B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-1. 5A, three SPS configurations are configured for the UE in total: one SPS configuration (SPS configuration 3) relative to CC 0 and two SPS configurations (SPS configurations 1 and 2) relative to CC 1. SPS configurations 1, 2, and 3 correspond to SPS cycles. = 5, 2 and 10 ms, respectively.

[0090] FIG. 5A corresponds to the case where the SCS for the CC (CC 0) for PUCCH transmission is smaller than the SCS for the other CC (CC 1) in which the SPS is configured. In other words, FIG. 5A corresponds to another case where the numerologies differ from each other between the CCs. 5A, the SCS for CC 0 is 15 kHz and the SCS for CC 1 is 30 kHz.

[0091] K1 shown in FIG. 5A may correspond to a value based on CC slot 0 for PUCCH transmission. SPS #3 corresponds to K1 = 3. The slot ends for SPS #1 and #2 overlap with the slot for SPS #3, and thus both SPS #1 and #2 correspond to K1 = 3.

[0092] According to the rule of Embodiment 1-1, the order of the HARQ-ACK bits for the PDSCH SPS in FIG. 4A is as shown by dashed arrows. It should be noted that in FIG. 5A, when a particular CC has multiple SPS with the same PDSCH-HARQ reverse transmission time value, a rule is introduced requiring these HARQ-ACKs to be sequenced in ascending order of SPS indices (considering (3) described above).

соответствуют следующему:[0093] FIG. 5B is a diagram showing the contents of each bit for the HARQ-ACK codebook corresponding to FIG. 5A. In the case shown in Fig. 5B,

match the following:

[Embodiment 1-2]

[0094] In Embodiment 1-2, the HARQ-ACK bits for receiving a PDSCH SPS with no associated DCI may be arranged first in descending order of the PDSCH-HARQ reverse transmission time values, and then in ascending order of serving cell indices (described above (1) -> (2)).

[0095] FIGS. 6A and 6B are diagrams showing an example of a HARQ-ACK bit order according to Embodiment 1-2. FIG. 6A shows an example similar to FIG. 3A, but differs from FIG. 3A in how the dotted arrows associated with the HARQ-ACK bit order for the PDSCH SPS are drawn.

соответствуют следующему:[0096] FIG. 6B is a diagram showing the contents of each bit for the HARQ-ACK codebook corresponding to FIG. 6A. In the case shown in FIG. 6B,

match the following:

[0097] FIGS. 7A and 7B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-2. FIG. 7A shows an example similar to FIG. 4A, but differs from FIG. 4A in how the dotted arrows associated with the HARQ-ACK bit order for the SPS PDSCH are drawn.

соответствуют следующему:[0098] FIG. 7B is a diagram showing the contents of each bit for the HARQ-ACK codebook corresponding to FIG. 7A. In the case shown in Fig. 7B,

match the following:

[0099] FIGS. 8A and 8B are diagrams showing another example of the HARQ-ACK bit order according to Embodiment 1-2. FIG. 8A shows an example similar to FIG. 5A, but differs from FIG. 5A in how the dotted arrows associated with the HARQ-ACK bit order for the PDSCH SPS are drawn.

[0100] According to the rule of Embodiment 1-2, the order of the HARQ-ACK bits for the PDSCH SPS in FIG. 8A is as shown by dashed arrows. It should be noted that in FIG. 5A, when a particular CC has multiple SPS with the same PDSCH-HARQ reverse transmission time value, a rule is introduced requiring these HARQ-ACKs to be sequenced in ascending order of SPS indices (considering (3) described above).

соответствуют следующему:[0101] FIG. 8B is a diagram showing the contents of each bit for the HARQ-ACK codebook corresponding to FIG. 8A. In the case shown in Fig. 8B,

match the following:

[Embodiment 1-3]

[0102] In Embodiment 1-3, the HARQ-ACK bits for receiving an SPS PDSCH with no associated DCI may be first arranged in ascending or descending order of SPS indices, and then in ascending order of serving cell indices (described above (3) -> (2 )).

может соответствовать следующему:[0103] In this case, in the case of the example in Fig. 4A,

may match the following:

расположены в порядке убывания индексов SPS), или

arranged in descending order of SPS indices), or

расположены в порядке возрастания индексов SPS).

arranged in ascending order of SPS indices).

может соответствовать следующему:[0104] In this case, in the case of the example in Fig. 5A,

may match the following:

расположены в порядке убывания индексов SPS), или

arranged in descending order of SPS indices), or

расположены в порядке возрастания индексов SPS).

arranged in ascending order of SPS indices).

может соответствовать следующему:[0105] In this case, in the case of the example in Fig. 6A,

may match the following:

расположены в порядке убывания индексов SPS), или

arranged in descending order of SPS indices), or

расположены в порядке возрастания индексов SPS).

arranged in ascending order of SPS indices).

[Additional remarks on the first embodiment]

[0106] It should be noted that the first embodiment describes an example in which the HARQ-ACK bits corresponding to each PDSCH SPS are contiguous (contiguous) bits, but this is not limiting. For example, in a HARQ-ACK codebook to be transmitted using PUCCH, another HARQ-ACK bit (e.g., HARQ-ACK for SPS PDSCH associated with activation DCI, HARQ-ACK bit corresponding to SPS release, HARQ-ACK bit corresponding to dynamic PDSCH, or the like) may be placed between a HARQ-ACK bit corresponding to a specific PDSCH SPS and a HARQ-ACK bit corresponding to another specific PDSCH SPS.

[0107] In other words, the order of the HARQ-ACK bits described in the first embodiment may be the order in the case where only HARQ-ACK bits corresponding to the corresponding PDSCH SPS are observed.

[0108] As described above, according to the first embodiment, the HARQ-ACK bit order for PDSCH SPS contained in the HARQ-ACK codebook can be appropriately determined. As long as the base station understands the order rule, there is no misunderstanding between the UE and the base station regarding the codebook, and thus the transmission and reception processes can be properly controlled.

<Second Embodiment>

[0109] The second embodiment relates to determining a PUCCH resource for transmitting a HARQ-ACK in a case where the HARQ-ACK order rule for SPS described in the first embodiment is applied.

[0110] In the second embodiment, the UE determines a PUCCH resource for transmitting a HARQ-ACK codebook containing only a HARQ-ACK for an SPS PDSCH with no associated DCI based on the reception of a specific (e.g., first or last) SPS PDSCH associated with the HARQ codebook -ACK.

[0111] The UE may determine the PUCCH resource described above based on the PUCCH resource information (eg, RRC parameter "n1 PUCCH-AN") included in the SPS configuration corresponding to the specific PDSCH SPS.

[0112] In the second embodiment, the UE evaluates this reception of a particular SPS PDSCH (eg, reception of the first, last, or n-th SPS PDSCH) based on the order of the HARQ-ACK bits for the SPS PDSCH included in the HARQ-ACK codebook. For example, when determining the PUCCH resource based on the last reception of the SPS PDSCH, the UE may determine the PUCCH resource based on the SPS PDSCH corresponding to the last HARQ-ACK of the SPS PDSCH HARQ-ACKs included in the HARQ-ACK codebook.

[0113] The second embodiment will be described in more detail in the following embodiments. [Embodiment 2-1]

[0114] Embodiment 2-1 follows the order of Embodiment 1-1.

[0115] FIGS. 9A and 9B are diagrams showing an example of PUCCH resources according to Embodiment 2-1. FIG. 9A shows an example similar to FIG. 3A, but different from FIG. 3A with respect to the 1_1 DCI format and the corresponding PDSCH that is not transmitted. In other words, the UE transmits on the PUCCH in FIG. 9A a HARQ-ACK codebook containing only the HARQ-ACK for the SPS PDSCH (SPS #1 to #3) with no associated DCI.

[0116] FIG. 9B is a diagram showing the PUCCH resource defined for the PUCCH transmission of FIG. 9A. FIG. 9B shows each of the PUCCH resources (PUCCH resources #1 and #2) corresponding to two SPS configurations to be configured.

[0117] The HARQ-ACK codebook transmitted on the PUCCH in FIG. 9A corresponds to the HARQ-ACK bits in FIG. 3B, except for the HARQ-ACK bit for PDSCH #1. Thus, the last reception of the SPS PDSCH is SPS #3. SPS #3 corresponds to SPS configuration 2, and thus the UE can transmit the above-described HARQ-ACK codebook using PUCCH resource #2 corresponding to SPS configuration 2.

[0118] FIGS. 10A and 10B are diagrams showing another example of PUCCH resources according to Embodiment 2-1. FIG. 10A shows an example similar to FIG. 4A, but different from FIG. 4A with respect to the 1_1 DCI format and the corresponding PDSCH that is not transmitted. In other words, the UE transmits on the PUCCH in FIG. 10A a HARQ-ACK codebook containing only the HARQ-ACK for the SPS PDSCH (SPS #1 to #3) with no associated DCI.

[0119] FIG. 10B is a diagram showing the PUCCH resource defined for the PUCCH transmission of FIG. 10A. FIG. 10B shows each of the PUCCH resources (PUCCH resources #1 to #3) corresponding to three SPS configurations to be configured. In the present example, PUCCH resource #1 temporary resource is symbols #0 and #1 in slot, PUCCH resource #2 temporary resource is symbols #2 and #3 in slot, and PUCCH resource #3 temporary resource is symbols #4 to #13 in the slot, but the PUCCH resources to be configured are not limited to this.

[0120] The HARQ-ACK codebook transmitted on the PUCCH in FIG. 10A corresponds to the HARQ-ACK bits in FIG. 4B, except for the HARQ-ACK bit for PDSCH #1. Thus, the last reception of the SPS PDSCH is SPS #3. SPS #3 corresponds to SPS configuration 3, and thus the UE can transmit the above-described HARQ-ACK codebook using PUCCH resource #3 corresponding to SPS configuration 3.

[0121] FIGS. 11A and 11B are diagrams showing another example of PUCCH resources according to Embodiment 2-1. FIG. 11A shows an example similar to FIG. 5A, but different from FIG. 5A with respect to the 1_1 DCI format and the corresponding PDSCH that is not transmitted. In other words, the UE transmits on the PUCCH in FIG. 11A a HARQ-ACK codebook containing only the HARQ-ACK for the SPS PDSCH (SPS #1 to #3) with no associated DCI.

[0122] FIG. 11B is a diagram showing the PUCCH resource defined for the PUCCH transmission of FIG. 11A. FIG. 11B shows each of the PUCCH resources (PUCCH resources #1 to #3) corresponding to three SPS configurations to be configured.

[0123] The HARQ-ACK codebook transmitted on the PUCCH in FIG. 11A corresponds to the HARQ-ACK bits in FIG. 5B, except for the HARQ-ACK bit for PDSCH #1. Thus, the last reception of the SPS PDSCH is SPS #2. SPS #2 corresponds to SPS configuration 2, and thus the UE can transmit the above-described HARQ-ACK codebook using PUCCH resource #2 corresponding to SPS configuration 2.

[Embodiment 2-2]

[0124] Embodiment 2-2 follows the order of Embodiment 1-2.

[0125] FIGS. 12A and 12B are diagrams showing an example of PUCCH resources according to Embodiment 2-2. FIG. 12A shows an example similar to FIG. 6A, but different from FIG. 6A with respect to the 1_1 DCI format and the corresponding PDSCH that is not transmitted. In other words, the UE transmits on the PUCCH in FIG. 12A a HARQ-ACK codebook containing only the HARQ-ACK for the SPS PDSCH (SPS #1 to #3) with no associated DCI.

[0126] FIG. 12B is a diagram showing the PUCCH resource defined for the PUCCH transmission of FIG. 12A. FIG. 12B shows each of the PUCCH resources (PUCCH resources #1 and #2) corresponding to two SPS configurations to be configured.

[0127] The HARQ-ACK codebook transmitted on the PUCCH in FIG. 12A corresponds to the HARQ-ACK bits in FIG. 6B, except for the HARQ-ACK bit for PDSCH #1. Thus, the last reception of the SPS PDSCH is SPS #2. SPS #2 corresponds to SPS configuration 1, and thus the UE can transmit the above-described HARQ-ACK codebook using PUCCH resource #1 corresponding to SPS configuration 2.

[0128] FIGS. 13A and 13B are diagrams showing another example of PUCCH resources according to Embodiment 2-1. FIG. 13A shows an example similar to FIG. 7A, but different from FIG. 7A with respect to the 1_1 DCI format and the corresponding PDSCH that is not transmitted. In other words, the UE transmits on the PUCCH in FIG. 13A a HARQ-ACK codebook containing only the HARQ-ACK for the SPS PDSCH (SPS #1 to #3) with no associated DCI.

[0129] FIG. 13B is a diagram showing the PUCCH resource defined for the PUCCH transmission of FIG. 13A. FIG. 13B shows each of the PUCCH resources (PUCCH resources #1 to 3#) corresponding to three SPS configurations to be configured.

[0130] The HARQ-ACK codebook transmitted on the PUCCH in FIG. 13A corresponds to the HARQ-ACK bits in FIG. 7B, except for the HARQ-ACK bit for PDSCH #1. Thus, the last reception of the SPS PDSCH is SPS #3. SPS #3 corresponds to SPS configuration 3, and thus the UE can transmit the above-described HARQ-ACK codebook using PUCCH resource #3 corresponding to SPS configuration 3.

[0131] FIGS. 14A and 14B are diagrams showing another example of PUCCH resources according to Embodiment 2-1. FIG. 14A shows an example similar to FIG. 8A, but different from FIG. 8A with respect to the 1_1 DCI format and the corresponding PDSCH that is not transmitted. In other words, the UE transmits on the PUCCH in FIG. 14A a HARQ-ACK codebook containing only the HARQ-ACK for the SPS PDSCH (SPS #1 to #3) with no associated DCI.

[0132] FIG. 14B is a diagram showing the PUCCH resource defined for the PUCCH transmission of FIG. 14A. FIG. 14B shows each of the PUCCH resources (PUCCH resources #1 to #3) corresponding to three SPS configurations to be configured.

[0133] The HARQ-ACK codebook transmitted on the PUCCH in FIG. 14A corresponds to the HARQ-ACK bits in FIG. 8B, except for the HARQ-ACK bit for PDSCH #1. Thus, the last reception of the SPS PDSCH is SPS #2. SPS #2 corresponds to SPS configuration 2, and thus the UE can transmit the above-described HARQ-ACK codebook using PUCCH resource #2 corresponding to SPS configuration 2.

[Embodiment 2-3]

[0134] Embodiment 2-3 corresponds to the order of Embodiment 1-3.

[0135] In the case as shown in FIG. 9A corresponding to FIG. 4A, the last reception of the SPS PDSCH is SPS #2. SPS #2 corresponds to SPS configuration 1, and thus the UE can transmit a HARQ-ACK codebook using PUCCH resource #1 corresponding to SPS configuration 2.

[0136] In the case as shown in FIG. 10A corresponding to FIG. 5A, the last reception of the SPS PDSCH is SPS #3. SPS #3 corresponds to SPS configuration 3, and thus the UE can transmit the HARQ-ACK codebook using PUCCH resource #3 corresponding to SPS configuration 3.

[0137] In the case as shown in FIG. 11A corresponding to FIG. 6A, the last reception of the SPS PDSCH is SPS #2. SPS #2 corresponds to SPS configuration 2, and thus the UE can transmit a HARQ-ACK codebook using PUCCH resource #2 corresponding to SPS configuration 2.

[0138] As described above, according to the second embodiment, the UE may appropriately estimate, based on the order of the HARQ-ACK bits for the PDSCH SPS contained in the HARQ-ACK codebook, the PDSCH SPS to determine the PUCCH resource.

<Other>

[0139] It should be noted that, in addition to or instead of the PUCCH resource determination method described in the second embodiment, the UE may determine the PUCCH resource for transmitting a HARQ-ACK codebook containing only a HARQ-ACK for a PDSCH SPS with no associated DCI, similar to the method for determining PUCCH resource for HARQ-ACK for dynamic PDSCH.

[0140] The UE may determine a PUCCH resource to transmit a HARQ-ACK codebook containing only HARQ-ACKs for SPS PDSCHs with no associated DCI, as described below. First, a plurality of PUCCH resource sets may be configured for the UE with RRC signaling. Here, the PUCCH resource sets may be downlink SPS-specific PUCCH resource sets or may be PUCCH resource sets configured (available) for the dynamic PDSCH.

[0141] The UE may determine the PUCCH resource set to be used from the set of PUCCH resource sets described above based on the payload size (bit length) of the HARQ-ACK for the downlink SPS.

[0142] The UE may determine, based on the PUCCH resource indicator field in the corresponding DCI (e.g., activation DCI), a PUCCH resource to be used from one or a plurality of PUCCH resources contained in a PUCCH resource set, or may determine a PUCCH resource to be used. , according to the given rule.

[0143] It should be noted that a given rule may include a rule requiring selection of a PUCCH resource with a symbol that starts earlier, or may include a rule requiring selection of a PUCCH resource corresponding to a smaller PUCCH resource index.

[0144] It should be noted that, if there are multiple parts of the corresponding DCI, the UE may determine the PUCCH resource based on the PUCCH resource indicator field in a particular DCI (eg, the first DCI or the last (latest) DCI). Here, the specific DCI may be selected from the activation DCI that activated the "SPS PDSCH specific reception" described in the second embodiment, or may be selected from the activation DCI that activated the SPS with a particular SPS configuration index (e.g., the lowest or highest SPS configuration index ).

[0145] When more than one HARQ-ACK with no associated DCI is multiplexed on a PUCCH, the HARQ-ACK may be transmitted with a particular PUCCH resource. The specific PUCCH resource mentioned here may be configured by one or multiple resources through higher layer signaling. A UE for which a plurality of specific PUCCH resources are configured may determine one specific PUCCH resource for PUCCH transmission based on, for example, a HARQ-ACK coding rate (UCI) to be transmitted.

[0146] It should be noted that in the present disclosure, an SPS event can be interpreted interchangeably as receiving an SPS.

[0147] Each of the above embodiments describes an example in which slot boundaries (or frame boundaries) of multiple CCs coincide with each other, but one skilled in the art will appreciate that the contents of the present disclosure can be used in the case where they do not coincide with each other. with a friend.

(Radio communication system)

[0148] Next, the structure of a radio communication system according to one embodiment of the present disclosure will be described. In this radio communication system, the radio communication method according to each embodiment of the present disclosure described above can be used for communication alone or in combination.

[0149] FIG. 15 is a diagram showing an example of a schematic structure of a radio communication system according to one embodiment. The radio communication system 1 may be a system implementing communication using a Long Term Evolution (LTE) system, a 5th generation New Radio (5G NR) mobile communication system, etc. ., the specifications of which have been developed by the 3rd Generation Partnership Project (3GPP).

[0150] The radio communication system 1 can support dual connectivity (MR-DC, multi-RAT dual connectivity) between a plurality of radio access technologies (RAT, Radio Access Technology). MR-DC may include dual connection (E-UTRA-NR (EN-DC) dual connection) between LTE (Evolved Universal Terrestrial Radio Access) and NR, dual connection (NR-E-UTRA (NE-DC) dual connection) between NR and LTE, etc.

[0151] 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). node). In the NE-DC, the NR base station (gNB) is the MN and the LTE (E-UTRA) base station (eNB) is the SN.

[0152] The radio communication system 1 can support dual connection between multiple base stations in the same RAT (e.g., dual connection (NR-NR dual connection (NN-DC)), where both MN and SN are base stations (gNB )NR).

[0153] The radio communication system 1 may include a base station 11 that forms a macro cell C1 with a relatively wide coverage area, and base stations 12 (12a-12c) that form small cells C2 that are located inside the macro cell C1 and that are narrower than macro cell C1. The user terminal 20 may be located in at least one cell. The location, number, and the like of each cell and user terminal 20 is in no way limited to the aspect shown in the diagram. Hereinafter, base stations 11 and 12 will be collectively referred to as "base stations 10" unless otherwise noted.

[0154] The user terminal 20 may be connected to at least one of a plurality of base stations 10. The user terminal 20 may use at least one of the following: carrier aggregation (CA) and dual connection (DC) using a plurality of component carriers (CC ).

[0155] Each CC may be included in at least one of the first frequency band (frequency band 1 (FR1)) and the second frequency band (frequency band 2 (FR2)). Macro cell C1 may be included in FR1 and small cells C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (below 6 GHz), and FR2 may be a frequency band that is greater than 24 GHz (above 24 GHz). It should be noted that frequency bands, definitions, etc. FR1 and FR2 are not limited in any way, and, for example, FR1 may correspond to a frequency band that is higher than FR2.

[0156] The user terminal 20 may communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0157] A plurality of base stations 10 may be connected via a wired connection (for example, an optical fiber in accordance with the Common Public Radio Interface (CPRI), X2 interface, etc.) or a wireless connection ( e.g. NR connection). For example, if the NR link is used as a backhaul link between base stations 11 and 12, base station 11 corresponding to the upstream station may be referred to as "Integrated Access Backhaul (IAB) backhaul donor", and the base station 12 corresponding to the relay station (relay) may be referred to as an "IAB node".

[0158] The base station 10 may be connected to the core network 30 through another base station 10 or directly. For example, core network 30 may include at least one of: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC). English Next Generation Core), etc.

[0159] The user terminal 20 may be a terminal supporting at least one of the communication schemes such as LTE, LTE-A, 5G, and so on.

[0160] In the radio communication system 1, a wireless access scheme based on Orthogonal Frequency Division Multiplexing (OFDM) may be used. For example, at least one of the downlink (DL) and uplink (UL) can use a cyclic OFDM prefix (CP-OFDM, from the English Cyclic Prefix OFDM), distributed OFDM with discrete Fourier transform (DFT-s-OFDM, Discrete Fourier Transform Spread OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA) Multiple Access), etc.

[0161] The wireless access scheme may be referred to as a "waveform". It should be noted that the radio communication system 1 may use a different wireless access scheme (eg, different single carrier transmission scheme, different multi-carrier transmission scheme) for the uplink and downlink wireless access scheme.

[0162] In the radio communication system 1, downlink common channels (Physical Downlink Shared Channel (PDSCH)) shared by the user terminal 20, broadcast channel (Physical Broadcast Channel (PBCH)), downlink control channel (Physical Downlink control channel (PDCCH)) etc.

[0163] In the radio communication system 1, uplink common channels (Physical Uplink Common Channel (PUSCH)) shared by the user terminal 20, uplink control channel (Physical Uplink Control Channel (PUCCH)), random access channel ( physical random access channel (PRACH)) etc.

[0164] User data, higher-level control information, System Information Blocks (SIBs), etc. transmitted over the PDSCH. User data, higher level management information, etc. may be transmitted on the PUSCH channel. Blocks of basic information (MIB, from the English. Master Information Block) can be transmitted over the Strategic Missile Forces.

[0165] Lower layer control information may be transmitted on the PDCCH. For example, the lower layer control information may include downlink control information (DCI) including scheduling information on at least one of the PDSCHs and PUSCHs.

[0166] It should be noted that the DCI for PDSCH scheduling may be referred to as "downstream assignment", "downstream DCI", etc., and the DCI for PUSCH scheduling may be referred to as "upstream grant", "upstream DCI", etc. It should be noted that PDSCH may be interpreted as "downstream data" and PUSCH may be interpreted as "upstream data".

[0167] For PDCCH detection, a control resource set (CORESET) and a search space can be used. CORESET corresponds to a resource for DCI lookup. The search space corresponds to the search area and the search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may keep track of the CORESET associated with the given search space based on the search space configuration.

[0168] One search space may correspond to a PDCCH candidate corresponding to one or more levels of aggregation. One or more search spaces may be referred to as a "set of search spaces". It should be noted that "search space", "search space set", "search space configuration", "search space set configuration", "CORESET", "CORESET configuration", etc. of the present disclosure may be interpreted interchangeably.

[0169] Uplink control information (UCI), including at least one of: channel state information (CSI), transmission acknowledgment information (e.g., which may also be referred to as hybrid automatic repeat request (HARQ-ACK) acknowledgment), ACK/NACK, etc.) and a scheduling request (SR) may be transmitted via the PUCCH. Random access preambles can be sent over the PRACH to establish connections with cells.

[0170] It should be noted that downstream, upstream, etc. in the present disclosure may be used without the term "communication". Also, different channels can be mentioned without adding "physical" to the name.

[0171] In the radio communication system 1, a synchronization signal (SS, from synchronization signal), a downlink reference signal (DL-RS, from English. downlink reference signal), etc. can be transmitted. In the radio communication system 1, a cell-specific Reference Signal (CRS), a Channel State Information Reference Signal (CSI-RS), a Demodulation Reference Signal (DMRS). DeModulation Reference Signal), positioning reference signal (PRS, from Positioning Reference Signal), phase tracking reference signal (PTRS, from Phase Tracking Reference Signal), etc. may be transmitted as DL-RS.

[0172] For example, the synchronization signal may be at least one of a primary synchronization signal (PSS, from the English primary synchronization signal) and a secondary synchronization signal (SSS, from the English secondary synchronization signal). A signaling block including SS (PSS, SSS) and RVSN (and DMRS for RVSN) may be referred to as "SS/PBCH block", "SS (SSB) block", etc. It should be noted that SS, SSB, etc. may also be referred to as a "reference signal".

[0173] Sounding reference signal (SRS), demodulation reference signal (DMRS), etc. may be transmitted as the uplink reference signal (UL-RS) in the radio communication system 1. It should be noted that DMRS may be referred to as "user terminal-specific reference signal (UE-specific reference signal)".

(Base station)

[0174] FIG. 16 is a diagram showing an example of the structure of a base station according to one embodiment. The base station 10 includes a control section 110, a transmit/receive section 120, transmit/receive antennas 130, and a transmission line interface 140. It should be noted that the 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 transmission line interfaces 140.

[0175] It should be noted that the present example mainly shows functional blocks that relate to the characteristic parts of the present embodiment, and it is assumed that the base station 10 may include other functional blocks that are also necessary for radio communication. Part of the processes of each section described below can be omitted.

[0176] The control section 110 controls the entire base station 10. The control section 110 may be formed by a controller, control circuit, or the like described based on a general understanding of the technical field to which the present disclosure pertains.

[0177] The control section 110 may control signal generation, scheduling (eg, resource allocation, display), and so on. The control section 110 can control transmission and reception, measurement, etc. using the transmission/reception section 120, the transmission/reception antennas 130, and the transmission line interface 140. The control section 110 may generate data, control information, a sequence, and so on. to transmit as a signal, and forward the generated elements to the transmit/receive section 120. The control section 110 can perform call processing (setup, release) for communication channels, manage the state of the base station 10, and manage radio resources.

[0178] The transmit/receive section 120 may include a baseband section 121, a radio frequency (RF) section 122, and a measurement section 123. The baseband section 121 may include a transmission processing section 1211 and a reception processing section 1212. 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 described based on a general understanding of the technical field to which the present disclosure pertains.

[0179] The transmit/receive section 120 may be structured as a transmit/receive section in one entity, or may be composed of a transmit section and a receive section separately. 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.

[0180] The transmit/receive antennas 130 may be formed by antennas, such as an antenna array, or the like, described based on a general understanding of the technical field to which the present disclosure pertains.

[0181] The transmit/receive section 120 may transmit the above-described downlink, synchronization signal, downlink reference signal, and so on. The transmit/receive section 120 may receive the above-described uplink, uplink reference signal, and so on.

[0182] The transmit/receive section 120 may generate at least one of a transmit beam and a receive beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), and so on.

[0183] The transmission/reception section 120 (transmission processing section 1211) can perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, , RLC retransmission control), media access control (MAC) layer processing (eg, HARQ retransmission control), etc., such as data and control information, etc. obtained from the control section 110, and may generate a bit string to send.

[0184] The transmission/reception section 120 (transmission processing section 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing. discrete Fourier transform) (if necessary), inverse fast Fourier transform (IFFT), precoding, digital-to-analog conversion, etc. bit string to transmit and output the baseband signal.

[0185] The transmit/receive section 120 (RF section 122) may perform RF band modulation, filtering, amplification, and so on. baseband signal and transmit the radio frequency band signal through the transmit/receive antennas 130.

[0186] On the other hand, the transmit/receive section 120 (RF section 122) may perform amplification, filtering, demodulation of the baseband signal, and so on. for the radio frequency band signal received by the transmit/receive antennas 130.

[0187] The transmission/reception section 120 (reception processing section 1212) may apply reception processing such as analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) , from English inverse discrete Fourier transform) (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 receive user data, etc.

[0188] The transmission/reception section 120 (measurement section 123) may perform measurement related to the received signal. For example, the measurement section 123 can perform a Radio Resource Management (RRM) measurement, a Channel State Information (CSI) measurement, and so on. based on the received signal. The measurement section 123 can measure the received power (for example, the power of the received reference signal (RSRP, from the English. Reference Signal Received Power)), the reception quality (for example, the quality of the received reference signal (RSRQ, from the English. Reference Signal Received Quality), signal ratio / interference plus noise (SINR, from the English Signal to Interference plus Noise Ratio), signal-to-noise ratio (SNR, from the English Signal to Noise Ratio)), signal level (for example, received signal strength indicator (RSSI, from English. Received Signal Strength Indicator)), channel information (such as CSI), etc. The measurement results may be output to the control section 110 .

[0189] The transmission line interface 140 can perform transmission/reception (backhaul signaling) of a signal with a device included in the core network 30 or other base stations 10, etc., and receive or transmit user data (user plane data), control plane data, etc. for user terminal 20.

[0190] It should be noted that the transmission section and the reception section of the base station 10 in the present disclosure may be formed by at least one of the following: a transmission/reception section 120, a transmission/reception antenna 130, and a transmission line interface 140.

[0191] It should be noted that the transmit/receive section 120 may receive a hybrid automatic repeat request (HARQ-ACK) information bit corresponding to a HARQ-ACK codebook containing only a HARQ-ACK corresponding to a downlink common channel (physical downlink common channel ( PDSCH)) with semi-persistent scheduling (SPS) using a single uplink control channel (PUCCH). (User terminal)

[0192] FIG. 17 is a diagram showing an example of a structure of a user terminal according to one embodiment. The user terminal 20 includes a control section 210, a transmit/receive section 220, and a transmit/receive antenna 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 230.

[0193] It should be noted that the present example mainly shows functional blocks that are related to the characteristic parts of the present embodiment, and it is assumed that the user terminal 20 may include other functional blocks that are also necessary for radio communication. Part of the processes of each section described below can be omitted.

[0194] The control section 210 controls the entire user terminal 20. The control section 210 may be formed by a controller, control scheme, or the like described based on a general understanding of the technical field to which the present disclosure pertains.

[0195] The control section 210 can control signal generation, display, and so on. The control section 210 can control transmission/reception, measurement, etc. using the transmission/reception section 220 and the transmission/reception antenna 230. The control section 210 generates data, control information, sequence, and so on. to be transmitted as a signal, and may forward the generated elements to the transmit/receive section 220.

[0196] The transmit/receive section 220 may include a baseband section 221, an RF section 222, and a measurement section 223. The baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212. The transmit/receive section 220 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 described based on a general understanding of the technical field to which the present disclosure pertains.

[0197] The transmit/receive section 220 may be configured as a transmit/receive section in a single entity, or may be composed of a transmit section and a receive section separately. 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.

[0198] The transmit/receive antennas 230 may be formed by antennas, such as an antenna array, or the like, described based on a general understanding of the technical field to which the present disclosure pertains.

[0199] The transmit/receive section 220 may receive the above-described downlink, synchronization signal, downlink reference signal, and so on. The transmit/receive section 220 may transmit the above-described uplink, uplink reference signal, and so on.

[0200] The transmit/receive section 220 may generate at least one of a transmit beam and a receive beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), and so on.

[0201] The transmission/reception section 220 (transmission processing section 2211) may perform Packet Data Downmix Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Media Access Control (MAC) layer processing ) (eg, HARQ retransmission control), etc., such as data and control information, etc. obtained from the control section 210, and may generate a bit string for transmission.

[0202] The transmission/reception section 220 (transmission processing section 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary). ), inverse fast Fourier transform (IFFT) processing, precoding, digital-to-analogue conversion, etc. bit string to transmit and output the baseband signal.

[0203] It should be noted that the decision to apply DFT processing or not may be based on the transform precoding configuration. The transmission/reception section 220 (transmission processing section 2211) may perform, for a given channel (eg, PUSCH), DFT processing as the above-described transmission processing for channel transmission using a DFT-s-OFDM waveform if transform precoding is enabled, and otherwise case, it is not necessary to perform DFT processing as the above transmission process.

[0204] The transmit/receive section 220 (RF section 222) may perform RF band modulation, filtering, amplification, and so on. baseband signal and transmit the radio frequency band signal through the transmit/receive antennas 230.

[0205] On the other hand, the transmit/receive section 220 (RF section 222) may perform amplification, filtering, demodulation of the baseband signal, and so on. for the radio frequency band signal received by the transmit/receive antennas 230.

[0206] The transmit/receive section 220 (receive processing section 2212) may apply receive processing such as A/D conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering , demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc. to the received baseband signal and receive user data, etc.

[0207] The transmit/receive section 220 (measurement section 223) may perform measurement related to the received signal. For example, the measurement section 223 may perform a radio resource management (RRM) measurement, a channel state information (CSI) measurement, and so on. based on the received signal. Measurement section 223 may measure received power (eg, RSRP), reception quality (eg, RSRQ, SINR, SNR), signal strength (eg, RSSI), channel information (eg, CSI), and so on. The measurement results may be output to the control section 210 .

[0208] It should be noted that the transmission section and the reception section of the user terminal 20 in the present disclosure may be formed by at least one of the following: the transmission/reception section 220 and the transmission/reception antenna 230.

[0209] It should be noted that the control section 210 may generate a hybrid automatic repeat request acknowledgment (HARQ-ACK) codebook containing only the HARQ-ACK corresponding to the downlink common channel (Physical Downlink Common Channel (PDSCH)) with semi-persistent scheduling (SPS ) such that the HARQ-ACK bit order corresponding to the respective PDSCHS SPS matches the given rule.

[0210] The HARQ-ACK codebook may be a HARQ-ACK codebook containing only the HARQ-ACK for PDSCH SPS with no associated DCI (e.g., activation DCI), may be a HARQ-ACK codebook containing only the HARQ-ACK for SPS PDSCH with associated DCI, or may be a HARQ-ACK codebook containing both of these HARQ-ACKs.

[0211] The transmit/receive section 220 may transmit the HARQ-ACK information bit corresponding to the HARQ-ACK codebook using an SPS-based uplink control channel (PUCCH) resource (e.g., SPS configuration for SPS) corresponding to the HARQ-ACK in a particular place in order (row).

[0212] It should be noted that the control section 210 and the transmit/receive section 220 may generate a HARQ-ACK codebook containing at least one of the following: a HARQ-ACK corresponding to an SPS PDSCH with no associated DCI, a HARQ-ACK for an SPS PDSCH with associated DCI, and a HARQ-ACK corresponding to the dynamic PDSCH for codebook transmission using the same PUCCH.

[0213] It should be noted that the predetermined rule may be a rule requiring that, firstly, the earlier SPS case is first, and secondly, the lower cell index is first. The predetermined rule may be a rule to which the rules (1) to (3) mentioned in relation to the first embodiment are applied in an arbitrary order.

[0214] The specific location may be at least one of the last, first, and nth (where n is an integer).

(Hardware structure)

[0215] It should be noted that in the functional diagrams used to describe the above embodiments, blocks are shown in the functional modules. These functional blocks (components) can be implemented by arbitrary combinations of at least one hardware and software. Here, the implementation method of each functional block is not specifically limited. In other words, each functional block may be implemented by one physically or logically single part of the device, or may be implemented by directly or indirectly connecting two or more physically and/or logically separated parts of the device (via, for example, a wired, wireless connection, or the like) and use of this plurality of device parts. The functional blocks may be implemented by combining software into a device as described above, or a plurality of devices as described above.

[0216] Here, the functions include judgment, determination, decision, calculation, calculation, processing, inference, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, assignment, establishment, comparison, guess, expectation, consideration, broadcast, notification, communication, routing, configuration, reconfiguration, distribution (display), assignment, and the like, but the functions are by no means limited to these. For example, the functional block(s) for realizing the transmission function may be called "transmission section (transmission block)", "transmitter" and the like. The implementation method of each component is not specifically limited as described above.

[0217] For example, a base station, user terminal, etc. according to one embodiment of the present disclosure, may function as a computer executing the operations of the radio communication method of the present disclosure. 18 is a diagram showing an example of a hardware structure of a base station and a user terminal according to one embodiment. 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, and a bus 1007, etc.

[0218] It should be noted that in the present disclosure, words such as apparatus, circuit, device, section, unit, etc. can be interpreted interchangeably. The hardware structure of base station 10 and user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured not to include some of these devices.

[0219] For example, although only one processor 1001 is shown, multiple processors may be provided. In addition, operations may be performed by a single processor or by two or more processors simultaneously, sequentially, or in other ways. It should be noted that processor 1001 may be implemented with one or more integrated circuits.

[0220] Each function of base station 10 and user terminals 20 is implemented, for example, by allowing predetermined software(s) to be read by hardware such as processor 1001 and memory 1002, and by allowing processor 1001 to perform calculations to control communications through the device 1004 communication and control of at least one of reading and writing data to memory 1002 and storage 1003.

[0221] The processor 1001 controls the entire computer by, for example, executing an operating system. The processor 1001 may be configured with a central processing unit (CPU) having interfaces with a peripheral device, a control device, a computing device, a recorder, and so on. For example, at least part of the control section 110 (210) described above, the transmit/receive section 120 (220), etc. may be implemented by the processor 1001.

[0222] In addition, the processor 1001 reads programs (program codes), program modules, data, and so on. from at least one of the storage 1003 and the communication device 1004 to the memory 1002 and performs various operations in accordance therewith. With regard to these programs, programs that enable the computer to perform at least part of the operations of the above-described embodiments of the invention 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.

[0223] The memory 1002 is a computer-readable, writable storage medium and may be formed, for example, by at least one of the following: read-only memory (ROM), erasable and programmable read-only memory (EPROM), electrically erasable and programmable read-only memory (EEPROM), Random Access Memory (RAM) and other suitable media for storing information. 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 disclosure.

[0224] The storage 1003 is a machine-readable writable medium and can be formed, for example, by 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), etc.), Digital Versatile Disc, Blu-ray Disc (registered trademark), removable disk, hard disk, smart card, flash memory device (such as , memory card, removable storage, removable disk), magnetic stripe, database, server, and other suitable storage media. Storage 1003 may be referred to as auxiliary storage.

[0225] The communication device 1004 is a hardware (transmitter/receiver) for computer-to-computer communication via at least wired and wireless networks, and may be called, for example, a network device, a network controller, a network card, a communication module, etc. . 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, at least duplex frequency division (FDD, from the English. Frequency Division Duplex) and duplex time division (TDD, from the English. Time Division Duplex). For example, the transmit/receive section 120 (220) described above, the transmit/receive antenna 130 (230), etc. may be implemented by the communications device 1004. In the transmit/receive section 120 (220), the transmit section 120a (220a) and the receive section 120b (220b) may be implemented in physical or logical separation.

[0226] 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).

[0227] In addition, these types of devices, including the processor 1001, the memory 1002, etc., are connected by a bus 1007 to exchange information. Bus 1007 may be formed by a single bus, or may be formed by buses that are different for different parts of the device.

[0228] In addition, the structure of the radio base station 10 and user terminals 20 may contain such hardware as a microprocessor, a digital signal processor (DSP, from the English Digital Signal Processor), an application-specific integrated circuit (ASIC, from the English Application-Specific Integrated Circuit), programmable logic device (PLD, from the English Programmable Logic Device), programmable logic element matrix (FPGA, from the English Field Programmable Gate Array), etc., and all or part of the functional blocks can be implemented through the specified hardware. For example, processor 1001 may be implemented by at least one of these hardware.

(Modifications)

[0229] It should be noted that the terms described in this disclosure, and the terms necessary for understanding this disclosure, can be replaced by other terms that have the same or similar meaning. For example, the terms "channel", "symbol" and "signal" (or signaling) can be interpreted interchangeably. In addition, "signals" can be "messages". The reference signal may be abbreviated "RS" (from the English Reference Signal) and may be called a pilot, a pilot signal, etc., depending on the standard used. In addition, a component carrier (CC) may be called a cell, a frequency carrier, a carrier frequency etc.

[0230] A radio frame in the time domain may consist of one or multiple periods (frames). Each of one or more periods (frames) constituting a radio frame may be referred to as a subframe. In addition, a subframe in the time domain may consist of one or multiple slots. The subframe may have a fixed time duration (eg, 1 ms) independent of numerology.

[0231] Here, the numerology may be a communication parameter applied to at least one of the following: transmission and reception of a given signal or channel. For example, the numerology may indicate at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering process performed by the transceiver in frequency domain, specific windowing performed by the transceiver in the time domain, and so on.

[0232] A slot may consist of one or multiple time domain symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols), Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, English Single-Carrier Frequency Division Multiple Access), etc.). In addition, the slot can be a temporary element depending on numerology.

[0233] A slot may include a plurality of mini-slots. Each mini-slot may consist of one or more symbols in the time domain. A mini-slot may be referred to as a "sub-slot". A mini-slot can consist of symbols smaller than the number of slots. A PDSCH (or PUSCH) transmitted per unit of time larger than a mini-slot may be referred to as "Type A PDSCH (PUSCH) Mapping." The PDSCH (or PUSCH) transmitted using the mini-slot may be referred to as "Type B PDSCH (PUSCH) Mapping."

[0234] The radio frame, subframe, slot, mini-slot, and symbol are temporary elements in signaling. Radio frame, subframe, slot, mini-slot, and symbol may be referred to by other equivalent terms. It should be noted that temporal elements such as frame, subframe, slot, mini-slot, and symbol in the present disclosure can be interpreted interchangeably.

[0235] For example, one subframe, multiple consecutive subframes, one slot, or one mini-slot may be referred to as a TTI. Thus, at least one of the subframe and/or TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. It should be noted that an element representing is a TTI, may not be referred to as a subframe, but as a slot, mini-slot, or the like.

[0236] In this document, TTI refers to, for example, the smallest scheduling time element in radio communication. For example, in LTE systems, a base station schedules allocation of RF resources for each user terminal (eg, frequency bands and transmit power values that can be used by each user terminal), in units of TTI. It should be noted that the definition of TTI is not limited to this.

[0237] TTIs may be elementary units of time in the transmission of channel-encoded data packets (transport blocks), code blocks, or codewords, or may serve as elementary units of processing in scheduling, link adaptation, etc. It should be noted that even when TTIs are determined, the time period (eg, number of symbols) for which transport blocks, code blocks, or code words or the like are actually mapped may be shorter than this TTI.

[0238] It should be noted that in the case where TTI is understood to mean one slot or one mini-slot, the minimum elementary unit of time in scheduling can be one or more TTIs (i.e. one or more slots or one or more mini-slots ). In addition, the number of slots (number of mini-slots) constituting this minimum elementary unit of time in scheduling can be adjusted.

[0239] A TTI with a time duration of 1 ms may be called a normal TTI (TTI in 3GPP versions 8-12), a long TTI, a regular subframe, a long subframe, a slot, and so on. A TTI that is shorter than a regular TTI may be referred to as a short TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, and the like.

[0240] It should be noted that a long TTI (for example, a regular TTI, subframe, etc.) can be interpreted by a TTI with a time duration of more than 1 ms, and a short TTI (for example, a short TTI, etc.) can be interpreted TTI with a duration less than the duration of the long TTI and equal to or greater than 1 ms

[0241] Resource block (RB, from the English Resource Block), which is a resource allocation element in the time domain and in the frequency domain, may contain one subcarrier or multiple subcarriers following continuously in the frequency domain. The number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example. The number of subcarriers included in the RB may be determined based on the numerology.

[0242] In the time domain, a resource block may contain one or multiple symbols and may be one slot, one mini-slot, one subframe, or one TTI in length. Each of one TTI, one subframe, etc. may consist of a single resource block or multiple resource blocks.

[0243] It should be noted that one or more resource blocks can be called a physical resource block (PRB, from the English. Physical RB), a group of subcarriers (SCG, from the English. Subcarrier Group), a group of resource elements (REG, from the English. Resource Element Group), PRB pair, RB pair, etc.

[0244] In addition, the resource block may contain one resource element (RE, from the English. Resource Element) or multiple resource elements. For example, one RE may correspond to a radio resource area formed by one subcarrier and one symbol.

[0245] The Bandwidth Part (BWP) (which may be referred to as "partial bandwidth", etc.) may represent a subset of contiguous common resource blocks (common RBs) for a particular numerology on a particular carrier. Here, the common RB may be indicated by the RB index based on the common carrier reference point. The PRB may be defined by a particular BWP and may be numbered within the BWP.

[0246] The BWP may include an uplink BWP (UL BWP, uplink BWP) and a downlink BWP (DL BWP, downlink BWP). One or multiple BWPs may be configured on a single carrier for a UE.

[0247] At least one of the configured BWPs may be active, and the UE need not assume the transmission/reception of a given signal/channel outside of the active BWPs. It should be noted that "cell", "carrier", etc. in the present disclosure may be interpreted as "BWP".

[0248] It should be noted that the above structures of radio frames, subframes, slots, mini-slots, symbols, etc. are just examples. For example, structures such as the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in composition of RB, number of characters in TTI, character length and length of the cyclic prefix (CP, from the English Cyclic Prefix), etc. can be changed in various ways.

[0249] Also, the information, parameters, etc. described in the present disclosure may be represented by absolute values or relative values with respect to predetermined values, or may be represented by other relevant information. For example, radio resources may be designated by predetermined indexes.

[0250] Names used for parameters, etc. in the present disclosure are not limiting in any respect. In addition, the mathematical expressions that use these parameters, etc., may differ from those expressly disclosed in the present disclosure. For example, since the various channels (Physical Uplink Control Channel (PUCCH), Physical Downlink Control Channel (PDCCH), etc.) and information items can be identified by any suitable names, the different names assigned to these individual channels and information items are neither in what respect are not limiting.

[0251] The information, signals, etc. described in the present disclosure may be represented using any of a variety of different methods. For example, data, instructions, commands, information, signals, bits, symbols and 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.

[0252] In addition, information, signals, etc. can be transmitted at least from higher levels to lower levels and from lower levels to higher levels. Information, signals, etc. may be input and/or output via a plurality of network nodes.

[0253] Received and/or transmitted information, signals, etc. may be stored in a specific location (eg, memory) or may be stored using a control table. Information, signals, etc. to be input and/or output can be overwritten, updated or supplemented. Transmitted information, signals, etc. can be removed. Received information, signals, etc. can be transferred to other parts of the device.

[0254] The communication of information is in no way limited to the aspects/embodiments described in this disclosure, and other methods may be used. For example, reporting information in the present disclosure may be performed by using physical layer signaling (eg, downlink control information (DCI), uplink control information (UCI)), higher layer signaling (eg, radio resource control (RRC) layer signaling), broadcast information ( Basic Information Block (MIB), System Information Blocks (SIB), etc.), Media Access Layer (MAC) signaling, other signals, or combinations thereof.

[0255] It should be noted that physical layer signaling may be referred to as L1/L2 control information (L1/L2 control signals) (Layer 1/Layer 2, layer 1/layer 2), L1 control information (L1 control signal), etc. .d. The RRC layer signaling may be referred to as RRC messages, and the signaling may be, for example, an RRC connection establishment message, an RRC connection reconfiguration message, and so on. Also, MAC layer signaling can be transmitted using, for example, MAC control elements (MAC CE).

[0256] In addition, reporting the provided information (eg, reporting that "X does not change") need not be explicitly communicated, and may be communicated implicitly (eg, by not reporting that given information or by reporting another piece of information).

[0257] Definitions may be made based on values represented by a single bit (0 or 1), boolean values representing true or false, or based on comparison of numeric values (eg, comparison with a predetermined value).

[0258] Software, whether called "program", "internal program", "middleware", "microcode", "hardware description language" or otherwise, should be understood in a broad sense, covering instructions, instruction sets, code, code segments, program codes, programs, subroutines, program modules, applications, software applications, software packages, objects, executables, threads of execution, procedures, functions, etc.

[0259] In addition, programs, commands, information, and the like. can be transmitted and received over the communication medium. For example, if a program is transmitted from a website, a server, or other remote sources using at least wired technologies (coaxial cables, fiber optic cables, twisted pair cables, digital subscriber lines (DSL, from English Digital Subscriber Line) etc.) and wireless technologies (infrared radiation, microwaves, etc.), then at least these wired technical means and wireless technical means are also included in the concept of a communication medium.

[0260] The terms "system" and "network" as used in the present disclosure may be used interchangeably. "Network" may mean a device (eg, base station) included in the network.

[0261] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "quasi-co-location (QCL)," indication status transmission configuration (TCI status)", "spatial ratio", "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.

[0262] In this disclosure, terms such as "base station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point" , "transmission point (TP, from the English transmission point)", "reception point (RP, from the English reception point)", "transmission / reception point (TRP, from the English transmission reception point)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", ", etc. may be used interchangeably. A base station may be referred to by terms such as "macro cell", "small cell", " femtocell", "picocell", etc.

[0263] A base station may be configured to serve one or more (e.g., three) cells. When a base station serves a plurality of cells, the entire coverage area of that base station may be divided into a plurality of smaller areas, in each of which communication services may be provided. through base station subsystems, 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 at least one base station and the base station subsystem that provides communication services in that coverage area.

[0264] In the present disclosure, the terms “mobile station (MS)*, “user terminal”, “user equipment (UE)”, and “terminal” may be used interchangeably.

[0265] A mobile station may be referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a device for wireless communication, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term in some cases.

[0266] At least one of the base station and the mobile station may be called a transmission device, a reception device, a radio communication device, and so on. It should be noted that at least one of the base station and the mobile station may be a device mounted on a moving object, or the moving object itself, etc. The moving object may be a vehicle (for example, a car, an airplane, etc.), may be a moving object that moves in an unmanned manner (for example, an unmanned aerial vehicle (drone), a self-driving car, etc.) , or may be a robot (manned type or unmanned type). It should be noted that at least one of the base station and the 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 (loT) device such as a sensor and the like.

[0267] In addition, the base station in the present disclosure can be interpreted as a user terminal. For example, each aspect/embodiment of the present disclosure may be applied to a structure that replaces communications between a base station and a user terminal with communications between multiple user terminals (e.g., which may be referred to as Device-to-Device (D2D). -Device)", "Vehicle-to-Everything (V2X, from English. Vehicle-to-Everything)", etc.). In this case, the user terminals 20 may have the functions of the base stations 10 described above. The words "uplink" and "downlink" can be interpreted as words corresponding to communication between terminals (eg, "referring to the communication side"). For example, uplink, downlink, etc. can be interpreted as a communication side channel.

[0268] Similarly, a user terminal in the present disclosure can be interpreted as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0269] The actions described in this disclosure as being performed by a base station may in some cases be performed by upper nodes. In a network consisting of one or more network nodes with base stations, various operations performed for communication with terminals may be performed by base stations, one or more network nodes other than base stations (for example, mobility management nodes (MME). . Mobility Management Entity), serving gateways (S-GW, from the English Serving-Gateway), etc.) or combinations of the listed nodes.

[0270] The aspects/embodiments illustrated in this disclosure may be used singly or in combination, which may vary depending on the implementation. The order of operations, sequences, flowcharts, etc. used in this disclosure to describe aspects/embodiments 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 following in the order provided by way of example, the specific order illustrated herein is in no way limiting.

[0271] The aspects/embodiments illustrated in this disclosure may be applicable to the Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, system 4th generation mobile communications (4G), 5th generation mobile communications system (5G), future radio access (FRA), new radio access technology (New-RAT), new radio access (NX), next generation radio access (FX), global mobile communication system (GSM, from the English Global System for Mobile communications) (registered trademark), CDMA2000, ultra-broadband mobile communications (UMB, from the English Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems that use suitable radio communication methods, and next generation systems that expand based on these systems topics. A plurality of systems may be combined (eg, a combination of LTE or LTE-A and 5G, etc.) and applied.

[0272] The expression "based on" (or "based on") as used in this disclosure does not mean "only based on" (or "only based on"), unless explicitly stated. In other words, the expression "based on" (or "based on") means both "based on only" and "based on at least" ("based on only" and "based on at least").

[0273] Indication of elements using designations such as "first", "second", etc. in this disclosure, as a rule, does not limit the number / quantity or order of these elements. These designations are used in this disclosure for convenience only, as a way to distinguish between two or more elements. Thus, referring to the first and second element does not mean that only two elements can be used, or that the first element must somehow precede the second element.

[0274] The term "decide (determine)" in this disclosure covers a wide variety of actions. For example, the terms "decide (determine)" can be interpreted as meaning making decisions (checks) related to calculation, calculation, processing, inference, research, search, search and query (for example, search in a table, database or some other data structure), fact-finding, etc.

[0275] In addition, the terms "decide (determine)" can be interpreted as meaning making "judgments (determinations)" about receiving (for example, receiving information), transmitting (for example, transmitting information), input, output, access (for example, access to data in memory), etc.

[0276] In addition, "judgment (determination)" as used herein can be interpreted as meaning making "judgments (determinations)" about resolution, selection, selection, establishment, comparison, etc. In other words, "judgment (determination)" can be interpreted as meaning making "judgments (determinations)" about some action.

[0277] In addition, "judge (determine)" can be interpreted as "guess", "expect", "consider", and the like.

[0278] "Maximum transmit power" according to the present disclosure may mean a maximum transmit power value, may mean a nominal maximum transmit power (nominal maximum transmit power of the UE), or may mean a calculated maximum transmit power (estimated maximum transmit power of the UE).

[0279] The terms "connected" and "connected" or any variations of these terms used in this disclosure, mean all direct or indirect connections or communication between two or more elements and may include the presence of one or more intermediate elements between two elements, which are "connected" or "linked" to each other. The relationship or connection between elements can be physical, logical, or a combination of both. For example, "connection" can be interpreted as "access".

[0280] In the present disclosure, when two elements are connected, the two elements may be considered to be "connected" or "connected" to each other by one or more electrical wires, cables, and printed electrical connections, and, as some non-limiting and not including examples, using electromagnetic energy having wavelengths in the radio frequency regions, microwave regions, (both visible and invisible) optical regions, or the like.

[0281] In the present disclosure, the phrase "A and B are different" may mean that "A and B are different from each other." It should be noted that this phrase may mean that "each of A and B is different from C." The terms "separate", "to be connected", etc. can be interpreted similarly to "other".

[0282] When terms such as "include", "including" and variations thereof are used in the present disclosure, these terms are intended to be inclusive, similar to how the term "comprising" is used. In addition, the conjunction "or" used in the present disclosure should not be understood to mean an exclusive disjunction.

[0283] For example, in the present disclosure, when the nouns are used in the singular, the present disclosure may include said nouns in the plural.

[0284] The invention of the present disclosure has been described in detail above, but it will now be apparent to those skilled in the art that the invention of the present disclosure is in no way limited to the specific embodiments described in this disclosure. The invention according to the present disclosure can be implemented with various changes and in various modifications without departing 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 invention in accordance with the present disclosure.

Claims (16)

1. Terminal containing: a control section configured to determine a hybrid automatic repeat request (HARQ-ACK) acknowledgment codebook containing only the HARQ-ACK information bits corresponding to a semi-persistent scheduling physical downlink common channel (PDSCH) (SPS), so that the HARQ- ACKs corresponding to the PDSCHs of each SPS are firstly ordered by the earliest received SPS, secondly ordered by the smallest SPS configuration index, and thirdly ordered by the smallest serving cell index; And a transmission section configured to transmit HARQ-ACK information corresponding to the HARQ-ACK codebook using a physical uplink control channel (PUCCH). 2. The terminal of claim 1, wherein the control section is configured to determine, based on the size of the HARQ-ACK codebook, a PUCCH resource among the plurality of PUCCH resources only for the SPS configured by the radio resource control signaling. 3. A radio communication method for a terminal, comprising: defining a hybrid automatic repeat request (HARQ-ACK) acknowledgment codebook containing only the HARQ-ACK information bits corresponding to a Physical Downlink Shared Channel (PDSCH) with semi-persistent scheduling (SPS), so that the HARQ-ACK information bits corresponding to the PDSCH of each SPS , first, ordered by the earliest SPS reception, second, ordered by the smallest SPS configuration index, and third, ordered by the smallest serving cell index; And transmitting HARQ-ACK information corresponding to the HARQ-ACK codebook using a Physical Uplink Control Channel (PUCCH). 4. Base station, containing: a receiving section configured to receive, using a physical uplink control channel (PUCCH), hybrid automatic repeat request (HARQ-ACK) information corresponding to the HARQ-ACK codebook containing only HARQ-ACK information bits corresponding to the physical downlink common channel (PDSCH) with semi-persistent scheduling (SPS), wherein the order of the HARQ-ACK information bits corresponding to the PDSCH of each SPS is determined such that the HARQ-ACK information bits are, first, ordered by the earliest SPS received, and second, ordered by the lowest SPS configuration index, and thirdly ordered by the lowest serving cell index; And a control section configured to perform retransmission control based on the HARQ-ACK information. 5. A radio communication system containing a terminal and a base station, in which the terminal contains: a control section configured to determine a hybrid automatic repeat request (HARQ-ACK) acknowledgment codebook containing only the HARQ-ACK information bits corresponding to a semi-persistent scheduling physical downlink common channel (PDSCH) (SPS), so that the HARQ- ACKs corresponding to the PDSCHs of each SPS are firstly ordered by the earliest received SPS, secondly ordered by the smallest SPS configuration index, and thirdly ordered by the smallest serving cell index; And a transmission section configured to transmit HARQ-ACK information corresponding to the HARQ-ACK codebook using a physical uplink control channel (PUCCH), and base station contains: a receiving section configured to receive HARQ-ACK information; And a control section configured to perform retransmission control based on the HARQ-ACK information.

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