JPWO2020066026A1 - User terminal and wireless communication method - Google Patents

Abstract

The user terminal has a control unit that generates a HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) codebook based on a plurality of downlink data having different communication requirements, and a transmission that transmits the HARQ-ACK codebook in one uplink channel resource. It has a part and. According to one aspect of the present disclosure, the HARQ-ACK codebook can be appropriately generated even if the transmission timings of the plurality of HARQ-ACKs are the same.

Description

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

In the UMTS (Universal Mobile Telecommunications System) network, LTE (Long Term Evolution) has been specified for the purpose of further high-speed data rate and low delay (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel.10-14) has been specified for the purpose of further increasing the capacity and sophistication of LTE (3GPP (Third Generation Partnership Project) Rel. (Release) 8, 9).

A successor system to LTE (for example, 5G (5th generation mobile communication system), 5G + (plus), NR (New Radio), 3GPP Rel.15 or later, etc.) is also being studied.

Further, in an existing LTE system (for example, LTE Rel. 8-13), the user terminal uses an uplink control channel (for example, PUCCH: Physical Uplink Control Channel) or an uplink shared channel (for example, PUSCH: Physical Uplink Shared Channel). It is used to transmit uplink control information (UCI). The configuration (format) of the uplink control channel is called a PUCCH format or the like.

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

In future wireless communication systems (eg, LTE Rel.15 and later, 5G, 5G +, NR, etc.), when UCI is transmitted using an uplink control channel (eg, PUCCH), higher layer signaling and downlink control information (DCI) It is considered to determine the resource (for example, PUCCH resource) for the uplink control channel based on the predetermined field value in.

Further, in NR, it is considered to specify the transmission timing of the delivery confirmation signal (HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement)) for the DL signal (for example, PDSCH) to the UE in the DCI that schedules the PDSCH. .. Therefore, there may be a case where HARQ-ACK corresponding to PDSCH transmitted in different transmission periods (for example, slots) is transmitted in the same slot.

The UE feeds back HARQ-ACK based on the codebook (on a codebook basis), but how to control the generation of the HARQ-ACK codebook when multiple HARQ-ACKs are transmitted in the same slot. Is a problem. If the HARQ-ACK codebook cannot be generated properly, system performance may deteriorate.

Therefore, one of the purposes of the present disclosure is to provide a user terminal and a wireless communication method capable of appropriately generating a HARQ-ACK codebook even if a plurality of HARQ-ACK transmission timings are the same.

The user terminal according to one aspect of the present disclosure includes a control unit that generates a HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) codebook based on a plurality of downlink data having different communication requirements, and the HARQ- in one uplink channel resource. It is characterized by having a transmitter for transmitting an ACK codebook.

According to one aspect of the present disclosure, the HARQ-ACK codebook can be appropriately generated even if the transmission timings of the plurality of HARQ-ACKs are the same.

FIG. 1 is a diagram showing an example of HARQ-ACK feedback of a UE that supports only the eMBB service. FIG. 2 is a diagram showing an example of HARQ-ACK feedback of a UE that supports only the URLLC service. FIG. 3 is a diagram showing an example of HARQ-ACK feedback of a UE that supports the eMBB service and the URLLC service. FIG. 4 is a diagram showing an example of HARQ-ACK codebook generation according to the first aspect. 5A and 5B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 1 and the CBG setting methods 1 and 2 of the aspect 1-2. 6A and 6B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 2 and the CBG setting methods 1 and 2 of the aspect 1-2. FIG. 7 is a diagram showing an example of HARQ-ACK codebook generation according to aspect 2-1. 8A and 8B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 1 and the sub-sub codebook connection method 1 and the CBG setting methods 1 and 2 of the aspect 2-2-1. 9A and 9B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 1 and the sub-sub codebook connection method 2 and the CBG setting methods 1 and 2 of the aspect 2-2-1. 10A and 10B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 1 and the CBG setting methods 1 and 2 of the aspect 2-2-1. 11A and 11B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 2 and the CBG setting methods 1 and 2 of the aspect 2-2-1. 12A and 12B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 1 and the sub-sub codebook connection method 1 and the CBG setting methods 1 and 2 of the aspect 2-2-2. 13A and 13B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 1 and the sub-sub codebook connection method 2 and the CBG setting methods 1 and 2 of the aspect 2-2-2. 14A and 14B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 1 and the CBG setting methods 1 and 2 of the aspect 2-2-2. 15A and 15B are diagrams showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 2 and the CBG setting methods 1 and 2 of the aspect 2-2-2. FIG. 16 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 17 is a diagram showing an example of the configuration of the base station according to the embodiment. FIG. 18 is a diagram showing an example of the configuration of the user terminal according to the embodiment. FIG. 19 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.

(HARQ-ACK Codebook)
In future wireless communication systems (eg, NR), the user terminal will make the HARQ-ACK codebook (which may be referred to as HARQ-ACK size) quasi-static or dynamic. It is being considered to decide. The base station provides the user terminal with information indicating how to determine the HARQ-ACK codebook, for example, information indicating whether the HARQ-ACK codebook is quasi-static or dynamic, for each component carrier, in a cell group (cell group). Notification may be performed by higher layer signaling for each Cell Group (CG), each PUCCH group, or each user terminal.

The HARQ-ACK codebook may be read as the HARQ-ACK codebook of PDSCH, the HARQ-ACK codebook size, the number of HARQ-ACK bits, and the like.

In the present disclosure, the upper layer signaling may be, for example, RRC signaling, MAC (Medium Access Control) signaling, broadcast information, or a combination thereof.

For MAC signaling, for example, a MAC control element (MAC CE), a MAC PDU (Protocol Data Unit), or the like may be used. Broadcast information includes, for example, a master information block (MIB), a system information block (SIB), a minimum system information (Remaining Minimum System Information (RMSI)), and other system information ( Other System Information (OSI)) may be used.

The user terminal determines (generates) the HARQ-ACK information bit based on the determined HARQ-ACK codebook for each component carrier, cell group, PUCCH group, or user terminal, and generates HARQ-ACK. May be transmitted using at least one of the uplink control channel (PUCCH) and the uplink shared channel (PUSCH).

When the user terminal is set to determine the HARQ-ACK codebook quasi-statically, or when the quasi-static HARQ-ACK codebook is set, the determination of the HARQ-ACK codebook is determined. It may also be called a Type 1 HARQ-ACK codebook determination. If the user terminal is set to dynamically determine the HARQ-ACK codebook, or if a dynamic HARQ-ACK codebook is set, the determination of the HARQ-ACK codebook is of type 2 HARQ. -It may be called an ACK codebook decision.

The type 1 HARQ-ACK codebook and the quasi-static HARQ-ACK codebook may be read interchangeably. The type 2 HARQ-ACK codebook and the dynamic HARQ-ACK codebook may be read interchangeably.

In the type 1 HARQ-ACK codebook determination, the user terminal may determine the number of HARQ-ACK bits and the like based on the configuration set by the upper layer signaling. The configured configuration may include, for example, DL (Downlink) transmissions scheduled over the range associated with the HARQ-ACK feedback timing, such as the maximum or minimum number of PDSCHs.

The range is also referred to as a HARQ-ACK bundling window, a HARQ-ACK feedback window, a bundling window, a feedback window, and the like. The bundling window may correspond to at least one range of space, time and frequency.

In a type 2 HARQ-ACK codebook determination, the user terminal determines the number of HARQ-ACK bits based on the downlink control information, for example, the bit string of the Downlink Assignment Index (DAI) field included in the DL assignment. Etc. may be decided.

The DAI field may indicate at least one of the total DAI and the counter DAI.

The total DAI is information on the total number of scheduled DL data (PDSCH), and may correspond to the total number of bits of HARQ-ACK fed back by the user terminal or the codebook size.

The counter DAI is information about the cumulative value of the scheduled DL data (PDSCH). For example, the Downlink Control Information (DCI) of one or more component carriers detected within a time unit, for example, a slot or subframe, contains a counter DAI numbered in component carrier index order, respectively. It may be. When the HARQ-ACK for the PDSCH scheduled over a plurality of time units is collectively fed back, for example, when the bundling window is composed of a plurality of slots, the counter DAI may be applied over the plurality of time units.

In addition, the UE sets a code block group (CBG) -based (CBG-based) transmission (CBG-based HARQ-ACK codebook determination (determination)) by an upper layer parameter (PDSCH code block group transmission information element, PDSCH-CodeBlockGroupTransmission). If not, the UE assumes transport block (TB) -based (TB-based) transmission (TB-based HARQ-ACK codebook determination). That is, the UE generates a HARQ-ACK information bit for each TB.

When the upper layer parameter of the PDSCH code block group transmission information element is provided to the serving cell (Component Carrier: CC), the UE receives a PDSCH containing a plurality of CBGs of one TB. The PDSCH code block group transmission information element includes the maximum number of CBGs (maxCodeBlockGroupsPerTransportBlock) in one TB. The UE generates each HARQ-ACK information bit of a plurality of CBGs in response to the TB reception of the serving cell, and generates a HARQ-ACK codebook containing the maximum number of CBG HARQ-ACK information bits.

The DCI used for PDSCH scheduling may include CBG Transmission Information (CBGTI) or CBG Flushing Out Information (CBGFI). The CBGTI may indicate which CBG in the TB is transmitted. CBGFI may indicate whether the retransmitted CBG can be combined with the same previously received CBG. The UE may be instructed by the upper layer parameter (codeBlockGroupFlushIndicator) in the PDSCH codeblock group transmission information element whether or not CBGFI is valid.

(PDSCH-to-ACK timing)
In future wireless communication systems (eg, NR), the user terminal determines the transmission timing of the HARQ-ACK corresponding to the received PDSCH based on the DCI that schedules the PDSCH. The timing may be referred to as PDSCH-to-ACK timing, K1 or the like. The DCI may be referred to as DL DCI, DL assignment, DCI format 1_1, DCI format 1-11, and the like.

For example, when the user terminal detects the DCI format 1_0, the final symbol of the PDSCH is set based on the HARQ timing instruction field (PDSCH-to-HARQ-timing-indicator field) included in the DCI. HARQ-ACK corresponding to the PDSCH is transmitted in the slot (n + k) (for example, k is an integer from 1 to 8) with reference to the included slot n.

When the user terminal detects the DCI format 1-11, the final symbol of the PDSCH is included based on the HARQ timing instruction field (PDSCH-to-HARQ-timing-indicator field) included in the DCI. HARQ-ACK corresponding to the PDSCH is transmitted in the slot (n + k) (for example, k is an integer from 1 to 8) with reference to the slot n. Here, the correspondence between k and the timing instruction field may be set in the user terminal for each PUCCH, PUCCH group, or cell group by higher layer signaling.

For example, the above correspondence may be set by a parameter included in the PUCCH Config information element of RRC signaling. The parameter may be called dl-DataToUL-ACK, Slot-timing-value-K1 or the like. For example, K1 may set a plurality of candidate values for PDSCH-to-ACK timing instructions by higher layer signaling, and DCI for the PDSCH schedule may indicate one of the plurality of candidate values.

K1 may be set for each PUCCH group or cell group. K1 may be a time determined based on the channel that transmits the HARQ-ACK, eg, PUCCH or PUSCH numerology (eg, subcarrier spacing).

(PUCCH resource)
In future wireless communication systems (for example, LTE Rel.15 or later, 5G, NR, etc.), a configuration (also referred to as a format, PUCCH format (PF), etc.) for an uplink control channel (for example, PUCCH) used for UCI transmission). Is being considered. For example, LTE Rel. In 15, it is considered to support five kinds of PF0-4. The names of PFs shown below are merely examples, and different names may be used.

For example, PF0 and 1 are PFs used for transmitting UCI (for example, HARQ-ACK: Hybrid Automatic Repeat reQuest-Acknowledge, ACK, NACK, etc.) of 2 bits or less (up to 2 bits). Is. Since PF0 can be assigned to 1 or 2 symbols, it is also called a short PUCCH or a sequence-based short PUCCH or the like. On the other hand, since PF1 can be assigned to the 4-14 symbol, it is also called a long PUCCH or the like. In PF1, a plurality of user terminals may be code division multiple access (CDM) within the same PRB by block spreading in the time domain using at least one of CS and OCC.

PF2-4 is used to transmit UCI (eg, Channel State Information (CSI) (or CSI and HARQ-ACK and / or Scheduling Request (SR))) that exceeds 2 bits. The PF used. Since PF2 can be assigned to 1 or 2 symbols, it is also called a short PUCCH or the like. On the other hand, since PF3 and 4 can be assigned to the 4-14 symbol, they are also called long PUCCH or the like. In PF4, a plurality of user terminals may be CDMed by using block diffusion in the (frequency domain) before DFT.

Allocation of resources (for example, PUCCH resources) used for transmission of the uplink control channel is performed using higher layer signaling and / or downlink control information (DCI). Here, the upper layer signaling is, for example, at least one of RRC (Radio Resource Control) signaling, system information (for example, RMSI: Remaining Minimum System Information, OSI: Other system information, MIB: Master Information Block, SIB: System Information Block). One), at least one of broadcast information (PBCH: Physical Broadcast Channel) is sufficient.

Specifically, one or more sets (PUCCH resource sets) including one or more PUCCH resources are notified (configured) to the user terminal by higher layer signaling. For example, the radio base station may notify the user terminal of K (for example, 1 ≦ K ≦ 4) PUCCH resource sets. Each PUCCH resource set may include M (eg, 8 ≦ M ≦ 32) PUCCH resources.

The user terminal may determine a single PUCCH resource set from the set K PUCCH resource sets based on the UCI payload size (UCI payload size). The UCI payload size may be the number of UCI bits that do not include the Cyclic Redundancy Code (CRC) bits.

The user terminal uses DCI (PUCCH resource indicator field) and implicit information (implicit indication information or implicit indication information) from the M PUCCH resources included in the determined PUCCH resource set. The PUCCH resource used for UCI transmission may be determined based on at least one of (also referred to as an implied index, etc.). The implied indication may be at least one of the number of CCEs in the CCE of the PDCCH reception carrying the DCI, the index of the leading CCE of the PDCCH reception, and the number of PUCCH resources in the PUCCH resource set. ..

When PUCCH resource sets # 0 to # 3 are set for the user terminal, the user terminal selects one of the PUCCH resource sets based on the UCI payload size.

For example, if the UCI payload size is 1 or 2 bits, PUCCH resource set # 0 is selected. Also, if the UCI payload size is less than or equal to _N 2 -1 bits 3 bits or more, PUCCH resource set # 1 is selected. Further, UCI payload size is less than or equal _N 3 -1 bits _{N 2} bits or more, PUCCH resource set # 2 is selected. Similarly, UCI payload size is less than or equal _N 3 -1 bits ₃ bits or more _N, PUCCH resource set # 3 is selected.

Thus, PUCCH resource set #i (i = 0, ..., K-1) in the range of UCI payload size to be selected, _{N i} bits or more _{N i +} 1 -1 bit or less (i.e., _{N i, ..., It _{is shown as Ni + 1} -1} bits).

_{Here, the start positions (number of start bits) N 0} and N ₁ of the UCI payload size for the PUCCH resource sets # 0 and # 1 may be 1, 3 respectively. As a result, PUCCH resource set # 0 is selected when transmitting a UCI of 2 bits or less, so PUCCH resource set # 0 uses PUCCH resources # 0 to # M-1 for at least one of PF0 and PF1. It may be included. On the other hand, when transmitting UCI exceeding 2 bits, one of PUCCH resource sets # 1 to # 3 is selected, so that PUCCH resource sets # 1 to # 3 are at least one of PF2, PF3, and PF4, respectively. PUCCH resources # 0 to # M-1 for the purpose may be included.

Further, the NR notifies the UE of the transmission timing (for example, K1) of HARQ-ACK for the PDSCH by using the DCI that schedules the PDSCH. K1 may be information about the slot in which the PUCCH resource is set.

The UE controls the transmission of HARQ-ACK based on the PUCCH resource set notified from the base station and the transmission timing of HARQ-ACK notified by the DCI that schedules PDSCH. The transmission of HARQ-ACK is controlled by using the HARQ-ACK codebook (in units of the HARQ-ACK codebook).

Since the HARQ-ACK transmission timing for each PDSCH can be flexibly set by DCI, there may be a case where the HARQ-ACK transmission timing for PDSCHs transmitted in different slots is set in the same slot.

In FIG. 1, the transmission timing of HARQ-ACK for PDSCH # 1 transmitted in the slot (SL_ # 1) and HARQ-ACK for PDSCH # 2 transmitted in the slot (SL_ # 3) are the same (here, in this case). It shows the case where it is set to the slot (SL_ # 7)). For example, if K1 = 6 included in DCI # 1 that schedules PDSCH # 1 and K1 = 4 included in DCI # 2 that schedules PDSCH # 2, HARQ-ACK # 1 and HARQ-ACK # 2 The transmission timing is set to the same slot (SL_ # 7).

When the UE supports only the eMBB (enhanced Mobile Broad Band) service, the UE does not have to expect to transmit a plurality of PUCCHs having HARQ-ACK information in one slot. This UE may multiplex the plurality of HARQ-ACKs in one HARQ-ACK codebook in one slot when the feedback timings of the plurality of HARQ-ACKs for the plurality of PDSCHs are indicated in the same slot.

A UE that supports only the eMBB service may determine one PUCCH resource for transmission of one HARQ-ACK codebook based on the last detected DCI, as shown in FIG.

If the UE supports only URLLC (Ultra Reliable and Low Latency Communications) services, the UE may transmit multiple PUCCHs with HARQ-ACK information in one slot to reduce latency. .. The UE may divide the plurality of HARQ-ACKs into a plurality of HARQ-ACK codebooks in one slot even when the feedback timings of the plurality of HARQ-ACKs for the plurality of PDSCHs are indicated in the same slot. good.

In the example of FIG. 2, the UE that supports only the URLLC service is instructed to the slot (SL # 7) having the same HARQ-ACK feedback timing of PDSCH # 1 and # 2, as in FIG. 1, but DCI # 1 , # 2 may use different PUCCH resources in the same slot based on their respective PUCCH resource notification fields.

Multiple UEs when the UE supports multiple services with different requirements (eg, when both the eMBB service and the URLLC service are supported, or when the UE supports two URLLC services with different requirements). When multiple HARQ-ACKs for the PDSCH of the service are multiplexed in the same PUCCH resource, it is not clear what kind of HARQ-ACK codebook the UE will generate.

In the example of FIG. 3, HARQ-ACK for PDSCH # 1 of the eMBB service transmitted in the slot (SL_ # 1), HARQ-ACK for PDSCH # 2 of the eMBB service transmitted in the slot (SL_ # 2), and A slot in which the transmission timing of HARQ-ACK for PDSCH # 3 of the URLLC service transmitted in the slot (SL_ # 3) and HARQ-ACK for PDSCH # 4 of the URLLC service transmitted in the slot (SL_ # 4) are the same. (Here, the case where it is set to the slot (SL_ # 7)) is shown.

In such a case, it is not clear what kind of HARQ-ACK codebook the UE supporting multiple services will generate. If the HARQ-ACK codebook cannot be generated properly, system performance may deteriorate.

Therefore, the present inventors have conceived to generate HARQ-ACK information based on a plurality of downlink data having different communication requirements and transmit the HARQ-ACK information in one uplink channel resource.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication methods according to each embodiment may be applied individually or in combination.

In the present disclosure, the service (service type) refers to communication requirements (requirements such as reliability and latency), parameters used for scheduling (MCS (Modulation and Coding Scheme) table, RNTI (Radio). It may be specified by at least one of (Network Temporary Identifier), etc.). For example, the UE may use (set) different MCS tables for PDSCHs of different services. For example, the DCI CRC for scheduling PDSCHs for different services may be scrambled with different RNTIs.

Alternatively, the service type (or traffic type) corresponding to URLLC and the service type corresponding to eMBB may be identified based on at least one of the following.
-Logical channels with different priorities-Modulation and Coding Scheme (MCS) table (MCS index table)
-DCI format-Used for scramble (mask) of cyclic redundancy check (CRC) bits included (added) in the DCI (DCI format) (Radio Network Temporary Identifier (RNTI)) )
-RRC (Radio Resource Control) parameters-Specific RNTI (for example, RNTI for URLLC, MCS-C-RNTI, etc.)
-Search space-A predetermined field in DCI (for example, reuse of a newly added field or an existing field)

Hereinafter, an example in which the UE supports the first service and the second service, the first service is the eMBB service, and the second service is the URLLC service will be described, but the first service may be the first URLLC service. , The second service may be a second URLLC service having requirements different from those of the first URLLC service.

Case 2 describes an example in which the UE is configured for CBG-based transmission only for the eMBB service. In this example, TB-based transmission is used for the URLLC service because the reliability of the URLLC service is high, the probability of retransmission is low, the delay of the URLLC service is small, and it is preferable to reduce the number of HARQ-ACK information bits. .. On the other hand, when sufficient resources for retransmission can be secured for the eMBB service, the UE is set to TB-based transmission for the eMBB service (first service) and CBG-based for the URLLC service (second service). The following embodiments can also be applied when transmission is set. Further, the following embodiment can also be applied when the first service is a URLLC service and the second service is an eMBB service.

Hereinafter, when one HARQ-ACK codebook contains a plurality of HARQ-ACK sub-codebooks (sub-codebook) and one HARQ-ACK sub-codebook contains a plurality of HARQ-ACK sub-sub codebooks (sub-sub-). Although the case where the codebook) is included will be described, the HARQ-ACK codebook may be used instead of the HARQ-ACK subcodebook. In this case, one HARQ-ACK codebook may be read as two concatenated HARQ-ACK codebooks, and the HARQ-ACK subcodebook may be read as HARQ-ACK codebooks. The sub-sub codebook may be read as a HARQ-ACK sub codebook.

Hereinafter, the case where the UE transmits the HARQ-ACK codebook for a plurality of PDSCHs in one PUCCH resource will be described, but the UE may transmit (piggy back) in one PUSCH resource.

(Wireless communication method)
In the HARQ-ACK codebook of a UE that supports multiple services, the following cases 1 and 2 need to be considered.

[Case 1]
The UE is configured with a transport block (TB) based HARQ-ACK. In other words, the UE is not configured with a code block group (CBG) based HARQ-ACK.

[Case 2]
The UE is configured for TB-based transmission and CBG-based transmission.

(Aspect 1)
The UE may collectively generate multiple HARQ-ACKs for different services. In other words, the UE may indiscriminately generate multiple HARQ-ACKs for different services. The UE may generate information in which a plurality of HARQ-ACKs for different services are mixed.

The UE may perform different operations with respect to the above-mentioned cases 1 and 2.

<Aspect 1-1>
For Case 1, the UE may both encode HARQ-ACKs for different services.

The UE may count DAIs for different services together.

In the example of the figure below, the first service is an eMBB service and the second service is a URLLC service.

FIG. 4 is a diagram showing an example of HARQ-ACK codebook generation according to the first aspect.

The UE is not configured for CBG-based transmission for CC1, 2, and 3. Therefore, the UE generates HARQ-ACK for TB-based transmission in CC1, 2, and 3 (determines the TB-based HARQ-ACK codebook).

The UE receives the PDSCH of the eMBB service at CCs 1 and 2, and receives the PDSCH of the URLLC service at CCs 2 and 3.

The UE counts DAI for TB-based transmissions regardless of the PDSCH service.

The UE counts the counter DAI in the order of CC index and then counts the counter DAI in the order of slot index. The UE counts the total DAI in slot index order.

The UE generates one HARQ-ACK information bit for each TB.

The UE arranges the HARQ-ACK information bits in the HARQ-ACK codebook in the order of CC index, and then arranges the HARQ-ACK information bits in the HARQ-ACK codebook in the order of slot index. In other words, the UE is placed in the HARQ-ACK codebook regardless of the first service and the second service.

According to this aspect 1-1, the UE can appropriately transmit HARQ-ACK for PDSCH of different services as one HARQ-ACK codebook.

<Aspect 1-2>
For Case 2, the UE may generate two HARQ-ACK subcodebooks (subcodebooks).

The two subcodebooks may be a subcodebook for TB-based transmission and a subcodebook for CBG-based transmission. In other words, the UE may determine the position of the HARQ-ACK information bit in the HARQ-ACK codebook based on the service corresponding to the HARQ-ACK information bit. Further, the UE may continuously arrange the HARQ-ACK information bits for TB-based transmission in the HARQ-ACK codebook and continuously arrange the HARQ-ACK information bits for base transmission in the HARQ-ACK codebook. ..

When the UE supports the first service and the second service, even if the CBG-based transmission is set for at least one of the first service and the second service according to one of the following CBG setting methods 1 and 2. good.

[CBG setting method 1]
In a serving cell in which CBG-based transmission is configured by higher layer signaling, the UE may expect the PDSCH of the first service to be CBG-based transmission and generate HARQ-ACK for the CBG-based transmission of the first service ( CBG-based HARQ-ACK codebook determination may be made). The DCI for scheduling the PDSCH of the first service may include information indicating the CBG to be transmitted (CBG transmission information, for example, CBGTI).

In a serving cell in which CBG-based transmission is configured by higher layer signaling, the UE may expect the PDSCH of the second service to be TB-based transmission and generate HARQ-ACK for the TB-based transmission of the second service ( TB-based HARQ-ACK codebook determination may be made). The DCI for scheduling the PDSCH of the second service may not include information indicating the CBG to be transmitted (CBG transmission information, for example, CBGTI).

That is, even when CBG-based transmission is set for the serving cell by higher layer signaling, CBG-based transmission may not be applied to the PDSCH of the second service on the serving cell.

[CBG setting method 2]
In a serving cell configured for CBG-based transmission by higher layer signaling, the UE expects the PDSCH to be CBG-based transmission, regardless of whether it is the first service or the second service, and HARQ-for CBG-based transmission. An ACK may be generated (a CBG-based HARQ-ACK codebook determination may be made). The DCI for scheduling the PDSCH may include information indicating the CBG to be transmitted (CBG transmission information, eg, CBGTI).

The UE may generate one HARQ-ACK codebook by concatenating two subcodebooks. The UE may concatenate the two subcodebooks according to one of the following concatenation methods 1 and 2.

[Connecting method 1]
The UE places the subcodebook for TB-based transmission first.

[Connecting method 2]
The UE places the subcodebook for CBG-based transmission first.

The UE may separately count the DAI for TB-based transmission and the DAI for CBG-based transmission.

FIG. 5A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1 and the CBG setting method 1 of the aspect 1-2. The difference from FIG. 4 will be mainly described.

The UE is set to CBG-based transmission for CC2 and is set to 4 as the maximum number of CBGs. The UE expects the PDSCH of the CC2 eMBB service to be a CBG-based transmission. On the other hand, the UE expects that the PDSCH of the URLLC service of CC2 is TB-based transmission. Therefore, the UE generates HARQ-ACK for the eMBB service and CBG-based transmission and HARQ-ACK for the URLLC service and TB-based transmission in CC2.

The UE counts the TB-based transmission DAI and the CBG-based transmission DAI separately, regardless of the PDSCH service.

The UE generates one HARQ-ACK information bit for each TB for TB-based transmission and one HARQ-ACK information bit for each CBG for CBG-based transmission.

The UE arranges the HARQ-ACK information bits for TB-based transmission in the first subcodebook in CC index order and slot index order, and sets the HARQ-ACK information bits for CBG-based transmission in CC index order and slot index order by 2. Place in the second subcodebook.

FIG. 5B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1 and the CBG setting method 2 of the aspect 1-2. The difference from FIG. 5A will be mainly described.

The UE is set to CBG-based transmission for CC2 and is set to 4 as the maximum number of CBGs. The UE expects the PDSCH of the CC2 eMBB service to be CBG-based transmission and the PDSCH of the CC2 URLLC service to be CBG-based transmission. Therefore, the UE generates HARQ-ACK for the eMBB service and the CBG-based transmission and HARQ-ACK for the URLLC service and the CBG-based transmission in CC2.

FIG. 6A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the CBG setting method 1 of the aspect 1-2. The difference from FIG. 5A will be mainly described.

The UE arranges the HARQ-ACK information bits for CBG-based transmission in the first subcodebook in the order of CC index and slot index, and sets the HARQ-ACK information bits for TB-based transmission in the order of CC index and slot index. Place in the second subcodebook.

FIG. 6B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the CBG setting method 2 of the aspect 1-2. The difference from FIG. 6A will be mainly described.

The UE is set to CBG-based transmission for CC2 and is set to 4 as the maximum number of CBGs. The UE expects the PDSCH of the CC2 eMBB service to be CBG-based transmission and the PDSCH of the CC2 URLLC service to be CBG-based transmission. Therefore, the UE generates HARQ-ACK for the eMBB service and the CBG-based transmission and HARQ-ACK for the URLLC service and the CBG-based transmission in CC2.

According to this aspect 1-2, even when TB-based transmission and CBG-based transmission are mixed in PDSCHs of different services, HARQ-ACK for those PDSCHs is appropriately transmitted as one HARQ-ACK codebook. can.

(Aspect 2)
The UE may separately generate multiple HARQ-ACKs for different services. In other words, the UE may generate HARQ-ACK for each service and concatenate them.

The UE may perform different operations with respect to the above-mentioned cases 1 and 2.

<Aspect 2-1>
For Case 1, the UE may generate two HARQ-ACK subcodebooks (subcodebooks).

The two subcodebooks may be a subcodebook for the first service and a subcodebook for the second service. In other words, the UE may determine the position of the HARQ-ACK information bit in the HARQ-ACK codebook based on the service corresponding to the HARQ-ACK information bit. Further, the UE may continuously arrange the HARQ-ACK information bits for the first service in the HARQ-ACK codebook, and continuously arrange the HARQ-ACK information bits for the second service in the HARQ-ACK codebook. You may.

The UE may generate one HARQ-ACK codebook by concatenating two subcodebooks. The UE may concatenate the two subcodebooks according to one of the following concatenation methods 1 and 2.

[Connecting method 1]
The UE places the subcodebook for the first service first.

[Connecting method 2]
The UE places the subcodebook for the second service first.

The UE may separately count the DAI for the first service and the DAI for the second service.

FIG. 7 is a diagram showing an example of HARQ-ACK codebook generation according to aspect 2-1.

The UE is not configured for CBG-based transmission for CC1, 2, and 3. Therefore, the UE generates HARQ-ACK for TB-based transmission in CC1, 2, and 3.

The UE receives the PDSCH of the eMBB service at CCs 1 and 2, and receives the PDSCH of the URLLC service at CCs 2 and 3.

The UE counts the DAI for the eMBB service and the DAI for the URLLC service separately.

The UE counts the counter DAI in the order of CC index and then counts the counter DAI in the order of slot index. The UE counts the total DAI in slot index order.

The UE generates one HARQ-ACK information bit for each TB.

When the concatenation method 1 is used (HARQ-ACK codebook 1), the UE arranges the HARQ-ACK information bits for the eMBB service in the first subcodebook in the order of CC index and slot index, and HARQ- for the URLLC service. Place the ACK information bits in the second subcodebook in CC index order and slot index order.

When the concatenation method 2 is used (HARQ-ACK codebook 2), the UE arranges the HARQ-ACK information bits for the URLLC service in the first subcodebook in the order of CC index and slot index, and HARQ- for the eMBB service. Place the ACK information bits in the second subcodebook in CC index order and slot index order.

According to this aspect 2-1 the UE can appropriately transmit HARQ-ACK for PDSCH of different services as one HARQ-ACK codebook.

<Aspect 2-2>
For Case 2, the UE may generate two HARQ-ACK subcodebooks (subcodebooks).

The UE may generate two subcodebooks according to one of the following aspects 2-2-1 and 2-2-2.

<< Aspect 2-2-1 >>
The two subcodebooks may be a subcodebook for the first service and a subcodebook for the second service. In other words, the UE may determine the position of the HARQ-ACK information bit in the HARQ-ACK codebook based on the service corresponding to the HARQ-ACK information bit. Further, the UE may continuously arrange the HARQ-ACK information bits for the first service in the HARQ-ACK codebook, and continuously arrange the HARQ-ACK information bits for the second service in the HARQ-ACK codebook. You may.

The UE may generate two HARQ-ACK sub-sub codebooks (sub-sub codebooks) for the sub codebook for the first service.

The two sub-sub-codebooks for the first service may be a sub-sub-codebook for TB-based transmission and a sub-sub-codebook for CBG-based transmission.

The UE may generate one subcodebook by concatenating two subsubcodebooks. The UE may concatenate two sub-sub-codebooks according to one of the following sub-sub-codebook concatenation methods 1 and 2.

[Sub-sub codebook concatenation method 1]
The UE places the sub-sub codebook for TB-based transmission first.

[Sub-sub codebook concatenation method 2]
The UE places the sub-sub codebook for CBG-based transmission first.

The UE may be configured for CBG-based transmission for at least one of the first and second services according to the following CBG setting methods 1 and 2.

[CBG setting method 1]
The UE may expect the PDSCH of the first service to be CBG-based transmission in the serving cell for which CBG-based transmission is set by higher layer signaling. Thereby, the UE may generate HARQ-ACK for CBG-based transmission in the first service.

The UE may expect the PDSCH of the second service to be TB-based transmission in the serving cell for which CBG-based transmission is set by higher layer signaling. Thereby, the UE may generate HARQ-ACK for TB-based transmission in the second service.

The UE may generate one sub-sub-codebook as a sub-codebook for the second service. This sub-sub-codebook may be a sub-sub-codebook for TB-based transmission.

[CBG setting method 2]
The UE may expect the PDSCH to be a CBG-based transmission in a serving cell for which CBG-based transmission has been configured by higher layer signaling, regardless of whether it is the first service or the second service. Thereby, the UE may generate HARQ-ACK for CBG-based transmission in both the first service and the second service.

The UE may generate two sub-sub-codebooks for the sub-codebook for the second service.

The two sub-sub-codebooks may be a sub-sub-codebook for TB-based transmission and a sub-sub-codebook for CBG-based transmission.

The UE may generate one subcodebook by concatenating two subsubcodebooks. The UE may concatenate two sub-sub-codebooks according to one of the following sub-sub-codebook concatenation methods 1 and 2.

[Sub-sub codebook concatenation method 1]
The UE places the sub-sub codebook for TB-based transmission first.

[Sub-sub codebook concatenation method 2]
The UE places the sub-sub codebook for CBG-based transmission first.

The UE may generate one HARQ-ACK codebook by concatenating two subcodebooks. The UE may concatenate the two subcodebooks according to one of the following concatenation methods 1 and 2.

[Connecting method 1]
The UE places the subcodebook for the first service first.

[Connecting method 2]
The UE places the subcodebook for the second service first.

The UE may separately encode the sub-codebook for the first service and the sub-codebook for the second service.

The UE separately separates the DAI for the first service and TB-based transmission, the DAI for the first service and CBG-based transmission, the DAI for the second service and TB-based transmission, and the DAI for the second service and CBG-based transmission. You may count.

FIG. 8A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1, the sub-sub codebook connection method 1, and the CBG setting method 1 of the aspect 2-2-1. The difference from FIG. 7 will be mainly described.

The UE is set to CBG-based transmission for CC2 and is set to 4 as the maximum number of CBGs. The UE expects the PDSCH of the CC2 eMBB service to be a CBG-based transmission. On the other hand, the UE expects that the PDSCH of the URLLC service of CC2 is TB-based transmission. Therefore, the UE generates HARQ-ACK for the eMBB service and CBG-based transmission and HARQ-ACK for the URLLC service and TB-based transmission in CC2.

The UE separately counts the TB-based transmission DAI of the eMBB service, the CBG-based transmission DAI of the eMBB service, and the TB-based transmission DAI of the URLLC service.

The UE generates one HARQ-ACK information bit for each TB for TB-based transmission and one HARQ-ACK information bit for each CBG for CBG-based transmission.

The UE arranges the HARQ-ACK information bits for the eMBB service and TB-based transmission in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for the eMBB service and CBG-based transmission. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bits for the URLLC service and the TB-based transmission in the second subcodebook (subsubcodebook) in the order of CC index and slot index.

FIG. 8B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1 and the sub-sub codebook connection method 1 and the CBG setting method 2 of the aspect 2-2-1. The difference from FIG. 8A will be mainly described.

The UE is set to CBG-based transmission for CC2 and is set to 4 as the maximum number of CBGs. The UE expects the PDSCH of the CC2 eMBB service to be CBG-based transmission and the PDSCH of the CC2 URLLC service to be CBG-based transmission. Therefore, the UE generates HARQ-ACK for the eMBB service and the CBG-based transmission and HARQ-ACK for the URLLC service and the CBG-based transmission in CC2.

The UE separately counts the TB-based transmission DAI of the eMBB service, the CBG-based transmission DAI of the eMBB service, the TB-based transmission DAI of the URLLC service, and the CBG-based transmission DAI of the URLLC service.

The UE arranges the HARQ-ACK information bits for the eMBB service and TB-based transmission in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for the eMBB service and CBG-based transmission. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for the URLLC service and the TB-based transmission in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the URLLC service and the CBG-based transmission. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 9A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1, the sub-sub codebook connection method 2, and the CBG setting method 1 of the aspect 2-2-1. The difference from FIG. 8A will be mainly described.

The UE arranges the HARQ-ACK information bits for the eMBB service and CBG-based transmission in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for the eMBB service and TB-based transmission. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bits for the URLLC service and the TB-based transmission in the second subcodebook (subsubcodebook) in the order of CC index and slot index.

FIG. 9B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1, the sub-sub codebook connection method 2, and the CBG setting method 2 of the aspect 2-2-1. The difference from FIG. 8A will be mainly described.

The UE is set to CBG-based transmission for CC2 and is set to 4 as the maximum number of CBGs. The UE expects the PDSCH of the CC2 eMBB service to be CBG-based transmission and the PDSCH of the CC2 URLLC service to be CBG-based transmission. Therefore, the UE generates HARQ-ACK for the eMBB service and the CBG-based transmission and HARQ-ACK for the URLLC service and the CBG-based transmission in CC2.

The UE arranges the HARQ-ACK information bits for the eMBB service and CBG-based transmission in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for the eMBB service and TB-based transmission. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for the URLLC service and the CBG-based transmission in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the URLLC service and TB-based transmission. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 10A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 1 and the CBG setting method 1 of the aspect 2-2-1. The difference from FIG. 8A will be mainly described.

The UE arranges the HARQ-ACK information bits for the URLLC service and the TB-based transmission in the first subcodebook (subsubcodebook) in the order of CC index and slot index. Further, the UE arranges the HARQ-ACK information bit for the eMBB service and TB-based transmission in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the eMBB service and CBG-based transmission. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 10B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 1 and the CBG setting method 2 of the aspect 2-2-1. The difference from FIG. 8B will be mainly described.

The UE arranges the HARQ-ACK information bits for the URLLC service and TB-based transmission in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for URLLC service and CBG-based transmission. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for the eMBB service and TB-based transmission in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the eMBB service and CBG-based transmission. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 11A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 2 and the CBG setting method 1 of the aspect 2-2-1. The difference from FIG. 9A will be mainly described.

The UE arranges the HARQ-ACK information bits for the URLLC service and the TB-based transmission in the first subcodebook (subsubcodebook) in the order of CC index and slot index. Further, the UE arranges the HARQ-ACK information bit for the eMBB service and the CBG-based transmission in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the eMBB service and TB-based transmission. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 11B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 2 and the CBG setting method 2 of the aspect 2-2-1. The difference from FIG. 9B will be mainly described.

The UE arranges the HARQ-ACK information bits for the URLLC service and the CBG-based transmission in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for the URLLC service and TB-based transmission. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for the eMBB service and the CBG-based transmission in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the eMBB service and TB-based transmission. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

<< Aspect 2-2-2 >>
The two subcodebooks may be a subcodebook for TB-based transmission and a subcodebook for CBG-based transmission. In other words, the UE may determine the position of the HARQ-ACK information bit in the HARQ-ACK codebook based on whether the HARQ-ACK information bit corresponds to CBG-based transmission. Further, the UE may continuously arrange the HARQ-ACK information bits for TB-based transmission in the HARQ-ACK codebook, and continuously arrange the HARQ-ACK information bits for CBG-based transmission in the HARQ-ACK codebook. You may.

The UE may generate two HARQ-ACK sub-sub codebooks (sub-sub codebooks) for the sub codebook for TB-based transmission.

The two sub-sub-codebooks may be a sub-sub-codebook for the first service and a sub-sub-codebook for the second service.

The UE may generate one subcodebook by concatenating two subsubcodebooks. The UE may concatenate two sub-sub-codebooks according to one of the following sub-sub-codebook concatenation methods 1 and 2.

[Sub-sub codebook concatenation method 1]
The UE first arranges the sub-sub codebook for the first service.

[Sub-sub codebook concatenation method 2]
The UE places the sub-sub codebook for the second service first.

The UE may be configured for CBG-based transmission for at least one of the first service and the second service according to one of the following CBG setting methods 1 and 2.

[CBG setting method 1]
The UE may expect the PDSCH of the first service to be CBG-based transmission in the serving cell for which CBG-based transmission is set by higher layer signaling. Thereby, the UE may generate HARQ-ACK for CBG-based transmission in the first service.

The UE may expect the PDSCH of the second service to be TB-based transmission in the serving cell for which CBG-based transmission is set by higher layer signaling. Thereby, the UE may generate HARQ-ACK for TB-based transmission in the second service.

The UE may generate one sub-sub-codebook as a sub-codebook for CBG-based transmission. This sub-sub-codebook may be a sub-sub-codebook for the first service.

[CBG setting method 2]
The UE may expect the PDSCH to be a CBG-based transmission in a serving cell for which CBG-based transmission has been configured by higher layer signaling, regardless of whether it is the first service or the second service. Thereby, the UE may generate HARQ-ACK for CBG-based transmission in both the first service and the second service.

The UE may generate two sub-sub-codebooks for the sub-codebook for CBG-based transmission.

The two sub-sub-codebooks may be a sub-sub-codebook for the first service and a sub-sub-codebook for the second service.

The UE may generate one subcodebook by concatenating two subsubcodebooks. The UE may concatenate two sub-sub-codebooks according to one of the following sub-sub-codebook concatenation methods 1 and 2.

[Sub-sub codebook concatenation method 1]
The UE first arranges the sub-sub codebook for the first service.

[Sub-sub codebook concatenation method 2]
The UE places the sub-sub codebook for the second service first.

The UE may generate one HARQ-ACK codebook by concatenating two subcodebooks. The UE may concatenate the two subcodebooks according to one of the following concatenation methods 1 and 2.

[Connecting method 1]
The UE places the subcodebook for TB-based transmission first.

[Connecting method 2]
The UE places the subcodebook for CBG-based transmission first.

The UE may separately encode the sub-codebook for TB-based transmission and the sub-codebook for CBG-based transmission.

The UE separately separates the DAI for the first service and TB-based transmission, the DAI for the first service and CBG-based transmission, the DAI for the second service and TB-based transmission, and the DAI for the second service and CBG-based transmission. You may count.

FIG. 12A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1 and the sub-sub codebook connection method 1 and the CBG setting method 1 of the aspect 2-2-2. The difference from FIG. 8A will be mainly described.

The UE arranges the HARQ-ACK information bits for TB-based transmission and eMBB service in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for TB-based transmission and URLLC service. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bits for the CBG-based transmission and the eMBB service in the second subcodebook (subsubcodebook) in the order of CC index and slot index.

FIG. 12B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1 and the sub-sub codebook connection method 1 and the CBG setting method 2 of the aspect 2-2-2. The difference from FIG. 8B will be mainly described.

The UE arranges the HARQ-ACK information bits for TB-based transmission and eMBB service in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for TB-based transmission and URLLC service. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for the CBG-based transmission and the eMBB service in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the CBG-based transmission and the URLLC service. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 13A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1, the sub-sub codebook connection method 2, and the CBG setting method 1 of the aspect 2-2-2. The difference from FIG. 9A will be mainly described.

The UE arranges the HARQ-ACK information bits for TB-based transmission and URLLC service in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for TB-based transmission and eMBB service. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bits for the CBG-based transmission and the eMBB service in the second subcodebook (subsubcodebook) in the order of CC index and slot index.

FIG. 13B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 1, the sub-sub codebook connection method 2, and the CBG setting method 2 of the aspect 2-2-2. The difference from FIG. 9B will be mainly described.

The UE arranges the HARQ-ACK information bits for TB-based transmission and URLLC service in the first sub-subcodebook of the first subcodebook in the order of CC index and slot index, and HARQ- for TB-based transmission and eMBB service. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for the CBG-based transmission and the URLLC service in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the CBG-based transmission and the eMBB service. -The ACK information bits are placed in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 14A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 1 and the CBG setting method 1 of the aspect 2-2-2. The difference from FIG. 10A will be mainly described.

The UE arranges the HARQ-ACK information bits for the CBG-based transmission and the eMBB service in the first subcodebook (subsubcodebook) in the order of CC index and slot index. Further, the UE arranges the HARQ-ACK information bit for TB-based transmission and eMBB service in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for TB-based transmission and URLLC service. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 14B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 1 and the CBG setting method 2 of the aspect 2-2-2. The difference from FIG. 10B will be mainly described.

The UE arranges the HARQ-ACK information bits for CBG-based transmission and eMBB service in the first sub-subcodebook of the first subcodebook in CC index order and slot index order, and HARQ- for CBG-based transmission and URLLC service. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for TB-based transmission and eMBB service in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for TB-based transmission and URLLC service. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

FIG. 15A is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 2 and the CBG setting method 1 of the aspect 2-2-2. The difference from FIG. 11A will be mainly described.

The UE arranges the HARQ-ACK information bits for the CBG-based transmission and the eMBB service in the first subcodebook (subsubcodebook) in the order of CC index and slot index. Further, the UE arranges the HARQ-ACK information bit for the TB-based transmission and the URLLC service in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the TB-based transmission and the eMBB service. The -ACK information bits are placed in the second sub-subcodebook of the first and second subcodebooks in the order of CC index and slot index.

FIG. 15B is a diagram showing an example of HARQ-ACK codebook generation according to the connection method 2 and the sub-sub codebook connection method 2 and the CBG setting method 2 of the aspect 2-2-2. The difference from FIG. 11B will be mainly described.

The UE arranges the HARQ-ACK information bits for CBG-based transmission and URLLC service in the first sub-subcodebook of the first subcodebook in CC index order and slot index order, and HARQ- for CBG-based transmission and eMBB service. The ACK information bits are arranged in the CC index order and the slot index order in the second sub-sub-codebook of the first sub-codebook. Further, the UE arranges the HARQ-ACK information bit for the TB-based transmission and the URLLC service in the first sub-subcodebook of the second subcodebook in the order of CC index and slot index, and HARQ for the TB-based transmission and the eMBB service. -The ACK information bits are placed in the second sub-subcodebook of the second subcodebook in the order of CC index and slot index.

According to this aspect 2-2, even when different services are mixed and TB-based transmission and CBG-based transmission are mixed, HARQ-ACK for those PDSCHs can be appropriately used as one HARQ-ACK codebook. Can be sent.

(Aspect 3)
If the predetermined conditions are met, the UE may apply the HARQ-ACK codebook generation rule as shown in aspect 1 or 2.

The UE may follow at least one of the following operations A to C.

(Operation A)
If the DCI for the first service and the DCI for the second service point to the same slot for HARQ-ACK feedback, the UE applies the HARQ-ACK codebook generation rule.

(Operation B)
In a state where the PUCCH resource for HARQ-ACK feedback is determined separately between the first service and the second service, the PUCCH resource including the HARQ-ACK for the first service sets the HARQ-ACK for the second service. If it overlaps with the included PUCCH resource, or if the PUCCH resource containing HARQ-ACK for the first service and the PUCCH resource containing HARQ-ACK for the second service overlap with the same PUSCH, the UE will have a HARQ-ACK code. Apply book generation rules.

(Operation C)
The UE is instructed by the upper layer parameter or the DCI field which rule is applied among the plurality of HARQ-ACK codebook generation rules as shown in the first and second aspects.

According to this aspect 3, the UE can generate an appropriate HARQ-ACK codebook depending on the situation.

(Aspect 4)
In the HARQ-ACK codebook of aspect 1, the UE may duplicate the HARQ-ACK information bit for a specific service and insert it into the HARQ-ACK codebook. The specific service may be a URLLC service. Thereby, the reliability of the URLLC service can be made higher than the reliability of other services.

In the HARQ-ACK codebook of aspect 2, the UE encodes the HARQ-ACK information bits so that the coding rates differ between the first service and the second service, and / or is transmitted on the uplink channel. The amount of coding bits may be controlled. The code rate of HARQ-ACK for the URLLC service may be lower than the code rate of HARQ-ACK for the eMBB service. Thereby, the reliability of the URLLC service can be made higher than the reliability of the eMBB service.

(Wireless communication system)
Hereinafter, the configuration of the wireless communication system according to the embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one of the wireless communication methods according to each of the above-described embodiments of the present disclosure or a combination thereof.

FIG. 16 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using LTE (Long Term Evolution) specified by 3GPP (Third Generation Partnership Project), 5G NR (5th generation mobile communication system New Radio), and the like. ..

Further, the radio communication system 1 may support dual connectivity between a plurality of RATs (Radio Access Technology) (multi-RAT dual connectivity (MR-DC: Multi-RAT Dual Connectivity)). MR-DC is a dual connectivity between LTE (E-UTRA: Evolved Universal Terrestrial Radio Access) and NR (EN-DC: E-UTRA-NR Dual Connectivity), and a dual connectivity between NR and LTE (NE). -DC: NR-E-UTRA Dual Connectivity) and the like may be included.

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

The wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity (NN-DC: NR-NR Dual Connectivity) in which both MN and SN are NR base stations (gNB)). ) May be supported.

The wireless communication system 1 includes a base station 11 that forms a macro cell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. You may prepare. The user terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminal 20 are not limited to the mode shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation) and dual connectivity (DC) using a plurality of component carriers (CC).

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

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

The plurality of base stations 10 may be connected by wire (for example, optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface, etc.) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the higher-level station is an IAB (Integrated Access Backhaul) donor, and the base station 12 corresponding to a relay station (relay) is IAB. It may be called a node.

The base station 10 may be connected to the core network 30 via another base station 10 or directly. The core network 30 may include at least one such as EPC (Evolved Packet Core), 5GCN (5G Core Network), and NGC (Next Generation Core).

The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

In the wireless communication system 1, a wireless access system based on Orthogonal Frequency Division Multiplexing (OFDM) may be used. For example, CP-OFDM (Cyclic Prefix OFDM), DFT-s-OFDM (Discrete Fourier Transform Spread OFDM), OFDMA (Orthogonal Frequency Division Multiple) in at least one of downlink (DL: Downlink) and uplink (UL: Uplink). Access), SC-FDMA (Single Carrier Frequency Division Multiple Access) and the like may be used.

The wireless access method may be referred to as a waveform. In the wireless communication system 1, another wireless access system (for example, another single carrier transmission system, another multi-carrier transmission system) may be used as the UL and DL wireless access systems.

In the wireless communication system 1, as downlink channels, downlink shared channels (PDSCH: Physical Downlink Shared Channel), broadcast channels (PBCH: Physical Broadcast Channel), and downlink control channels (PDCCH: Physical Downlink Control) shared by each user terminal 20 are used. Channel) and the like may be used.

Further, in the wireless communication system 1, as the uplink channel, the uplink shared channel (PUSCH: Physical Uplink Shared Channel), the uplink control channel (PUCCH: Physical Uplink Control Channel), and the random access channel (PRACH) shared by each user terminal 20 are used. : Physical Random Access Channel) may be used.

User data, upper layer control information, SIB (System Information Block), etc. are transmitted by PDSCH. User data, upper layer control information, and the like may be transmitted by the PUSCH. Further, the MIB (Master Information Block) may be transmitted by the PBCH.

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

The DCI that schedules PDSCH may be called DL assignment, DL DCI, or the like, and the DCI that schedules PUSCH may be called UL grant, UL DCI, or the like. The PDSCH may be read as DL data, and the PUSCH may be read as UL data.

A control resource set (CORESET: COntrol REsource SET) and a search space may be used for the detection of PDCCH. CORESET corresponds to a resource for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a search space based on the search space settings.

One SS may correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. The "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", etc. of the present disclosure may be read as each other.

Depending on the PUCCH, channel state information (CSI), delivery confirmation information (for example, HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement), ACK / NACK, etc.), scheduling request (SR: Scheduling Request) ) Etc. may be transmitted. The PRACH may transmit a random access preamble to establish a connection with the cell.

In this disclosure, downlinks, uplinks, etc. may be expressed without "links". Further, it may be expressed without adding "Physical" at the beginning of various channels.

In the wireless communication system 1, a synchronization signal (SS: Synchronization Signal), a downlink reference signal (DL-RS: Downlink Reference Signal), and the like may be transmitted. In the wireless communication system 1, the DL-RS includes a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), and a demodulation reference signal (DMRS: DeModulation). A reference signal), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), and the like may be transmitted.

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

Further, in the wireless communication system 1, as an uplink reference signal (UL-RS), a measurement reference signal (SRS: Sounding Reference Signal), a demodulation reference signal (DMRS), or the like may be transmitted. The DMRS may be called a user terminal specific reference signal (UE-specific reference signal).

(base station)
FIG. 17 is a diagram showing an example of the configuration of the base station according to the embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140. The control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may each be provided with one or more.

In this example, the functional blocks of the feature portion in the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.

The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.

The control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping) and the like. The control unit 110 may control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140. The control unit 110 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 120. The control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.

The transmission / reception unit 120 may include a baseband unit 121, an RF (Radio Frequency) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmitter / receiver 120 includes a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on common recognition in the technical fields according to the present disclosure. be able to.

The transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

The transmitting / receiving antenna 130 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.

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

The transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.

The transmission / reception unit 120 (transmission processing unit 1211) processes, for example, PDCP (Packet Data Convergence Protocol) layer processing and RLC (Radio Link Control) layer processing (for example, for data, control information, etc. acquired from the control unit 110). RLC retransmission control), MAC (Medium Access Control) layer processing (for example, HARQ retransmission control), and the like may be performed to generate a bit string to be transmitted.

The transmission / reception unit 120 (transmission processing unit 1211) performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (DFT) processing on the bit string to be transmitted. Transmission processing such as (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, digital-analog transformation, and the like may be performed to output a baseband signal.

The transmission / reception unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 130. ..

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

The transmission / reception unit 120 (reception processing unit 1212) performs analog-digital transform, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. Receive processing such as processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing, and user data Etc. may be obtained.

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

The transmission line interface 140 transmits / receives signals (backhaul signaling) to / from a device included in the core network 30, another base station 10 and the like, and provides user data (user plane data) and control plane for the user terminal 20. Data or the like may be acquired or transmitted.

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

The transmission / reception unit 120 may transmit the setting of whether or not to perform CBG-based transmission by higher layer signaling. The transmission / reception unit 120 may transmit a downlink signal using parameters (MCS table, RNTI, etc.) corresponding to the communication requirements.

(User terminal)
FIG. 18 is a diagram showing an example of the configuration of the user terminal according to the embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. The control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.

In this example, the functional blocks of the feature portion in the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.

The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.

The control unit 210 may control signal generation, mapping, and the like. The control unit 210 may control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 220.

The transmission / reception unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmission / reception unit 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure.

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

The transmitting / receiving antenna 230 can be composed of an antenna described based on common recognition in the technical field according to the present disclosure, for example, an array antenna.

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

The transmission / reception unit 220 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.

The transmission / reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (for example, RLC retransmission control), and MAC layer processing (for example, for data, control information, etc. acquired from the control unit 210). , HARQ retransmission control), etc., to generate a bit string to be transmitted.

The transmission / reception unit 220 (transmission processing unit 2211) performs channel coding (may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), and IFFT processing for the bit string to be transmitted. , Precoding, digital-to-analog conversion, and other transmission processing may be performed to output the baseband signal.

Whether or not to apply the DFT process may be based on the transform precoding setting. The transmission / reception unit 220 (transmission processing unit 2211) described above for transmitting a channel (for example, PUSCH) using the DFT-s-OFDM waveform when the transform precoding is enabled. The DFT process may be performed as the transmission process, and if not, the DFT process may not be performed as the transmission process.

The transmission / reception unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 230. ..

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

The transmission / reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, and decoding (error correction) for the acquired baseband signal. Decoding may be included), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.

The transmission / reception unit 220 (measurement unit 223) may perform measurement on the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, or the like based on the received signal. The measuring unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like. The measurement result may be output to the control unit 210.

The transmission unit and the reception unit of the user terminal 20 in the present disclosure may be composed of at least one of the transmission / reception unit 220, the transmission / reception antenna 230, and the transmission line interface 240.

Further, the control unit 210 generates a HARQ-ACK codebook (at least one HARQ-ACK codebook) based on a plurality of downlink data (for example, PDSCH) having different communication requirements (for example, eMBB service, URLLC service). You may. The transmission / reception unit 220 may transmit the HARQ-ACK codebook in one uplink channel resource (for example, PUCCH, PUSCH).

Further, even if the control unit 210 determines the position of the HARQ-ACK information bit in the HARQ-ACK codebook based on the communication requirements (service, MCS table, RNTI, etc.) corresponding to the HARQ-ACK information bit. Good (Aspects 1 and 2).

Further, the control unit 210 determines the HARQ-ACK in the HARQ-ACK codebook based on whether or not the HARQ-ACK information bit corresponds to a codebook group-based transmission (for example, a CBG instructed by CBGTI). The position of the information bit may be determined (Case 2 of Aspects 1 and 2).

Further, the control unit 210 may continuously arrange the HARQ-ACK information bits corresponding to the same communication requirement in the HARQ-ACK codebook (Aspect 2-2-1).

Further, the control unit 210 continuously arranges the HARQ-ACK information bits in the HARQ-ACK codebook, which are the same whether or not they correspond to the codebook group-based transmission (for example, the CBG instructed by CBGTI). You may (Aspect 2-2-2).

(Hardware configuration)
The block diagram used in the description of the above embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one physically or logically connected device, or directly or indirectly (for example, two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices. The functional block may be realized by combining the software with the one device or the plurality of devices.

Here, the functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. Not limited. For example, a functional block (constituent unit) for functioning transmission may be referred to as a transmitting unit, a transmitter, or the like. As described above, the method of realizing each of them is not particularly limited.

For example, the base station, user terminal, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. FIG. 19 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment. The base station 10 and the user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. ..

In addition, in this disclosure, the wording of a device, a circuit, a device, a section, a unit and the like can be read as each other. The hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.

For example, although only one processor 1001 is shown, there may be multiple processors. Further, the processing may be executed by one processor, or the processing may be executed simultaneously, sequentially, or by using other methods by two or more processors. The processor 1001 may be mounted by one or more chips.

For each function of the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and communicates via the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), and the like may be realized by the processor 1001.

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

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

The storage 1003 is a computer-readable recording medium, and is, for example, a flexible disc, a floppy (registered trademark) disc, an optical magnetic disc (for example, a compact disc (CD-ROM (Compact Disc ROM), etc.)), a digital versatile disc, and the like. At least one of Blu-ray® disks, removable disks, optical disc drives, smart cards, flash memory devices (eg cards, sticks, key drives), magnetic stripes, databases, servers, and other suitable storage media. It may be composed of. The storage 1003 may be referred to as an auxiliary storage device.

The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. Communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of. For example, the transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like described above may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be physically or logically separated from the transmission unit 120a (220a) and the reception unit 120b (220b).

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

Further, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.

Further, the base station 10 and the user terminal 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include hardware, and a part or all of each functional block may be realized by using the hardware. For example, processor 1001 may be implemented using at least one of these hardware.

(Modification example)
The terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, channels, symbols and signals (signals or signaling) may be read interchangeably. Also, the signal may be a message. The reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot (Pilot), a pilot signal, or the like depending on the applied standard. Further, the component carrier (CC: Component Carrier) may be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

The radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the wireless frame may be referred to as a subframe. Further, the subframe may be composed of one or more slots in the time domain. The subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.

Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel. Numerology includes, for example, SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transmission / reception. At least one of a specific filtering process performed by the machine in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.

The slot may be composed of one or more symbols in the time domain (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.). In addition, the slot may be a time unit based on numerology.

The slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. The mini-slot may also be referred to as a sub-slot. A minislot may consist of a smaller number of symbols than the slot. A PDSCH (or PUSCH) transmitted in a time unit larger than the minislot may be referred to as a PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (PUSCH) mapping type B.

Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. The radio frame, subframe, slot, minislot and symbol may have different names corresponding to each. The time units such as frames, subframes, slots, mini slots, and symbols in the present disclosure may be read as each other.

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

Here, TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units. The definition of TTI is not limited to this.

The TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation. When a TTI is given, the time interval (for example, the number of symbols) to which the transport block, code block, code word, etc. are actually mapped may be shorter than the TTI.

When one slot or one minislot is called TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.

A TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, and the like. TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots and the like.

The long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.

A resource block (RB) is a resource allocation unit in a time domain and a frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers contained in the RB may be determined based on numerology.

The RB may also include one or more symbols in the time domain and may be one slot, one minislot, one subframe or one TTI in length. Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.

One or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.

Further, the resource block may be composed of one or a plurality of resource elements (RE: Resource Element). For example, 1RE may be a radio resource area of 1 subcarrier and 1 symbol.

Bandwidth Part (BWP) (which may also be called partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. good. Here, the common RB may be specified by the index of the RB with respect to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be set in one carrier for the UE.

At least one of the configured BWPs may be active and the UE may not expect to send or receive a given signal / channel outside the active BWP. In addition, "cell", "carrier" and the like in this disclosure may be read as "BWP".

The above-mentioned structures such as a wireless frame, a subframe, a slot, a minislot, and a symbol are merely examples. For example, the number of subframes contained in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots contained in a slot, the number of symbols and RBs contained in a slot or minislot, and included in the RB. The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be changed in various ways.

In addition, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, radio resources may be indicated by a given index.

The names used for parameters and the like in the present disclosure are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements. Is not a limited name in any way.

The information, signals, etc. described in the present disclosure may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

Further, information, signals, and the like can be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layers. Information, signals, etc. may be input / output via a plurality of network nodes.

The input / output information, signals, and the like may be stored in a specific location (for example, a memory), or may be managed using a management table. Input / output information, signals, etc. can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to another device.

The notification of information is not limited to the embodiments / embodiments described in the present disclosure, and may be performed by other methods. For example, the notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (DCI), uplink control information (UCI)), and upper layer signaling (for example, RRC (Radio Resource Control)). ) Signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), MAC (Medium Access Control) signaling), other signals or a combination thereof May be good.

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

In addition, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit notification, but implicitly (for example, by not notifying the predetermined information or another information). May be done (by notification of).

The determination may be made by a value represented by 1 bit (0 or 1), or by a boolean value represented by true or false. , May be done by numerical comparison (eg, comparison with a given value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.

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

The terms "system" and "network" used in this disclosure may be used interchangeably. The "network" may mean a device (eg, a base station) included in the network.

In the present disclosure, "precoding", "precoder", "weight (precoding weight)", "pseudo-colocation (QCL: Quasi-Co-Location)", "TCI state (Transmission Configuration Indication state)", "spatial relationship" (Spatial relation), "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", " Terms such as rank, resource, resource set, resource group, beam, beam width, beam angle, antenna, antenna element, and panel are compatible. Can be used for.

In the present disclosure, "Base Station (BS)", "Wireless Base Station", "Fixed Station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", " "Access point", "Transmission point (TP)", "Reception point (RP)", "Transmission / reception point (TRP)", "Panel", "Cell" , "Sector", "cell group", "carrier", "component carrier" and the like can be used interchangeably. Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.

The base station can accommodate one or more (eg, three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)). Communication services can also be provided by Remote Radio Head)). The term "cell" or "sector" refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage.

In the present disclosure, terms such as "mobile station (MS)", "user terminal", "user equipment (UE)", and "terminal" may be used interchangeably. ..

Mobile stations include subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals. , Handset, user agent, mobile client, client or some other suitable term.

At least one of a base station and a mobile station may be referred to as a transmitting device, a receiving device, a wireless communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The moving body may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving body (for example, a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned type). ) May be. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of a base station and a mobile station may be an IoT (Internet of Things) device such as a sensor.

Further, the base station in the present disclosure may be read by the user terminal. For example, the communication between the base station and the user terminal is replaced with the communication between a plurality of user terminals (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). Each aspect / embodiment of the present disclosure may be applied to the configuration. In this case, the user terminal 20 may have the function of the base station 10 described above. In addition, words such as "up" and "down" may be read as words corresponding to communication between terminals (for example, "side"). For example, the upstream channel, the downstream channel, and the like may be read as a side channel.

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

In the present disclosure, the operation performed by the base station may be performed by its upper node in some cases. In a network including one or more network nodes having a base station, various operations performed for communication with a terminal are performed by one or more network nodes other than the base station and the base station (for example, the base station). It is clear that it can be performed by MME (Mobility Management Entity), S-GW (Serving-Gateway), etc., but not limited to these) or a combination thereof.

Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.

Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication). system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (Registered Trademarks) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), LTE 802. 20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other systems using appropriate wireless communication methods, next-generation systems extended based on these, and the like may be applied. In addition, a plurality of systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).

The phrase "based on" as used in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first", "second" as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted or that the first element must somehow precede the second element.

The term "determining" as used in the present disclosure may include a wide variety of actions. For example, "judgment" means "judging", "calculating", "computing", "processing", "deriving", "investigating", "looking up", "search", "inquiry". For example, searching in a table, database or another data structure), ascertaining, etc. may be considered to be "judgment".

In addition, "judgment (decision)" includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access (for example). It may be regarded as "judgment (decision)" such as "accessing" (for example, accessing data in memory).

In addition, "judgment (decision)" is regarded as "judgment (decision)" of solving, selecting, selecting, establishing, comparing, and the like. May be good. That is, "judgment (decision)" may be regarded as "judgment (decision)" of some action.

Further, "judgment (decision)" may be read as "assuming", "expecting", "considering" and the like.

The "maximum transmit power" described in the present disclosure may mean the maximum value of the transmit power, may mean the nominal UE maximum transmit power, or may mean the nominal UE maximum transmit power (the nominal UE maximum transmit power). It may mean rated UE maximum transmit power).

The terms "connected", "coupled", or any variation thereof, as used in this disclosure, are any direct or indirect connections or connections between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are "connected" or "joined" to each other. The connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access".

In the present disclosure, when two elements are connected, using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-comprehensive examples, the radio frequency domain, microwaves. It can be considered to be "connected" or "coupled" to each other using frequency, electromagnetic energy having wavelengths in the light (both visible and invisible) regions, and the like.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". The term may mean that "A and B are different from C". Terms such as "separate" and "combined" may be interpreted in the same way as "different".

When "include", "including" and variations thereof are used in the present disclosure, these terms are as comprehensive as the term "comprising". Is intended. Furthermore, the term "or" used in the present disclosure is intended not to be an exclusive OR.

In the present disclosure, if articles are added by translation, for example a, an and the in English, the disclosure may include the plural nouns following these articles.

Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as an amended or modified mode without departing from the spirit and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for purposes of illustration and does not bring any limiting meaning to the invention according to the present disclosure.

Claims (6)

A control unit that generates an HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) codebook based on multiple downlink data with different communication requirements.
A user terminal comprising a transmission unit that transmits the HARQ-ACK codebook in one uplink channel resource. The user terminal according to claim 1, wherein the control unit determines the position of the HARQ-ACK information bit in the HARQ-ACK codebook based on the communication requirement corresponding to the HARQ-ACK information bit. .. The control unit determines the position of the HARQ-ACK information bit in the HARQ-ACK codebook based on whether or not the HARQ-ACK information bit corresponds to codebook group-based transmission. The user terminal according to claim 2. The user terminal according to claim 2, wherein the control unit continuously arranges HARQ-ACK information bits corresponding to the same communication requirement in the HARQ-ACK codebook. The second aspect of the present invention, wherein the control unit continuously arranges the HARQ-ACK information bits having the same support for the codebook group-based transmission in the HARQ-ACK codebook. User terminal. The process of generating a HARQ-ACK (Hybrid Automatic Repeat reQuest ACKnowledgement) codebook based on multiple downlink data with different communication requirements, and
A method for wireless communication of a user terminal, which comprises a step of transmitting the HARQ-ACK codebook in one uplink channel resource.

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