WO2024080027A1

WO2024080027A1 - Terminal, wireless communication method, and base station

Info

Publication number: WO2024080027A1
Application number: PCT/JP2023/031739
Authority: WO
Inventors: 大輔栗田; 聡永田; チーピンピ; ジンワン; ランチン
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2022-10-13
Filing date: 2023-08-31
Publication date: 2024-04-18

Abstract

A terminal according to one aspect of the present disclosure comprises: a receiving unit that receives at least one among first information instructing DL reception and second information instructing UL transmission in a time domain to which subband non-overlapping full duplex communication is applied; and a control unit that when the DL reception and the UL transmission instructions are supported for the same time domain to which the subband non-overlapping full-duplex communication is applied, controls to select and perform one of the DL reception and the UL transmission on the basis of at least one among transmission conditions for the first information and the second information, conditions applied to the DL reception and the UL transmission, and conditions set in advance.

Description

Terminal, wireless communication method and base station

This disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.

Long Term Evolution (LTE) was specified for Universal Mobile Telecommunications System (UMTS) networks with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) was specified for the purpose of achieving higher capacity and greater sophistication over LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).

Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later, etc.) are also under consideration.

In future wireless communication systems (e.g., NR), it is being considered to use sub-band non-overlapping full duplex (SBFD) in communications between terminals (user terminals, User Equipment (UE)) and networks (NW, e.g., base stations).

However, there has been insufficient consideration given to the method of controlling UL transmission and DL reception when using SBFD. If this consideration is not sufficient, there is a risk of degradation in communication quality.

Therefore, one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control UL transmission and DL reception even when subband non-overlapping full duplex (SBFD) is applied.

A terminal according to one aspect of the present disclosure has a receiving unit that receives at least one of first information instructing DL reception and second information instructing UL transmission in a time domain to which subband non-overlapping full-duplex signaling is applied, and a control unit that, when the DL reception and UL transmission instructions are supported for the same time domain to which the subband non-overlapping full-duplex signaling is applied, controls to select and perform either the DL reception or the UL transmission based on at least one of the transmission conditions of the first information and the second information, the conditions applied to the DL reception and the UL transmission, and preset conditions.

According to one aspect of the present disclosure, even when subband non-overlapping full duplex (SBFD) is applied, UL transmission and DL reception can be appropriately controlled.

1A and 1B are diagrams showing an example of setting a slot configuration. FIG. 2 is a diagram illustrating an example of the configuration of an SBFD. 3A and 3B are diagrams showing an example of resource configuration in the time domain and the frequency domain when SBFD is applied. FIG. 4 is a diagram showing an example of a UE operation according to the 0th embodiment. FIG. 5 is a diagram showing an example of control of DL reception/UL transmission in the same SBFD symbol/slot according to the first embodiment. FIG. 6 is a diagram showing another example of control of DL reception/UL transmission in the same SBFD symbol/slot according to the first embodiment. FIG. 7 is a diagram showing an example of control of DL reception/UL transmission in the same SBFD symbol/slot according to the second embodiment. FIG. 8 is a diagram showing an example of priorities set for DL reception/UL transmission in the same SBFD symbol/slot according to the second embodiment. FIG. 9 is a diagram showing an example of control of DL reception/UL transmission in the same SBFD symbol/slot according to the third embodiment. FIG. 10 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 11 is a diagram illustrating an example of the configuration of a base station according to an embodiment. FIG. 12 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. FIG. 13 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. FIG. 14 is a diagram illustrating an example of a vehicle according to an embodiment.

(sub-band non-overlapping full duplex (SBFD))
In LTE up to Rel. 14, Frequency Division Duplex (FDD) has been mainly put to practical use, and Time Division Duplex (TDD) is also supported.

On the other hand, in NR from Rel. 15 onwards, TDD is being considered as the main focus, with FDD also being supported (e.g., migration of LTE bands, etc.).

In FDD, DL reception and UL transmission can be performed simultaneously, which is preferable in terms of reducing delay. On the other hand, in FDD, the resource ratio between DL and UL is fixed (e.g., 1:1).

In TDD, it is possible to change the ratio of DL and UL resources. For example, in a typical environment where DL traffic is relatively heavy, it is possible to increase the amount of DL resources and improve DL throughput.

On the other hand, when considering the time ratio of transmission and reception in TDD up to Rel. 16, there may be cases where the transmission opportunities of UL signals/channels are fewer than the reception opportunities of DL signals/channels. In such cases, the UE cannot transmit UL signals/channels frequently, and there is a concern that delays in the transmission of important UL signals/channels may occur. In addition, since there are fewer UL transmission opportunities compared to DL reception opportunities, there is also a concern that signals/channels may become congested during UL transmission opportunities. Furthermore, since the time resources available for transmitting UL signals/channels are limited in TDD, the application of UL coverage extension techniques, for example, by repeated transmission (which may also be called repetition), is also limited.

In future wireless communication systems (e.g., Rel. 18 and later), the introduction of a division duplex method that combines TDD and Frequency Division Duplex (FDD) for UL and DL is being considered. This division duplex method may also be called sub-band non-overlapping full duplex (SBFD).

SBFD may refer to a duplexing method that frequency-division multiplexes DL and UL (allowing simultaneous use of DL and UL) within one component carrier (CC)/band of a TDD band, or across multiple CCs (within the same band).

When the duplexing method is applied to multiple CCs, it may mean that in a time resource in which DL is available on one CC, UL is available on another CC.

Figure 1A is a diagram showing an example of TDD settings defined in Rel. 16 and earlier. In the example shown in Figure 1A, TDD slots/symbols are set for a UE in the bandwidth of one component carrier (CC) (which may also be called a cell or serving cell).

In the example shown in Figure 1A, the time ratio of DL slots to UL slots is 4:1. With such slot/symbol settings in conventional TDD, it is not possible to secure sufficient UL time resources, which may result in UL transmission delays and reduced coverage performance.

FIG. 1B is a diagram showing an example of the configuration of SBFD. In the example of FIG. 1B, within one component carrier (CC), the resources used for DL reception and the resources used for UL transmission overlap in time. With such a resource configuration, it is possible to secure UL resources and improve the resource utilization efficiency.

For example, as shown in the example of FIG. 1B, by configuring both ends of the frequency domain in one CC as DL and sandwiching UL resources between the DL, it is possible to avoid and mitigate the occurrence of cross link interference (CLI) with neighboring carriers. In addition, a guard area may be set at the boundary between the DL resources and the UL resources.

Considering the complexity of handling self-interference, it is conceivable that only the base station uses DL and UL resources simultaneously. In other words, in resources where DL and UL overlap in time, one UE may use DL resources and another UE may use UL resources.

Figure 2 shows an example of the SBFD configuration. In the example shown in Figure 2, part of the DL resources of the TDD band is used as UL resources, and the DL and UL are configured to overlap in time.

In the example shown in Figure 2, during DL-only periods, each of the multiple UEs (in Figure 2, UE #1 and UE #2) receives the DL channel/signal.

In addition, during the period when DL and UL overlap in time, one UE (UE#1 in the example of FIG. 2) receives the DL channel/signal, and another UE (UE#2 in the example of FIG. 2) transmits the UL channel/signal. During this period, the base station transmits and receives DL and UL simultaneously.

Furthermore, during UL-only periods, each of the multiple UEs transmits an UL channel/signal.

In the existing NR (for example, to be specified by Rel. 15/16), the DL frequency resource and the UL frequency resource in the UE carrier are set as the DL Bandwidth Part (BWP) and the UL BWP, respectively. In order to switch the DL/UL frequency resource to another DL/UL frequency resource, multiple BWP settings and a mechanism for BWP adaptation are required.

Also, in the existing NR, the time resources in the TDD carrier for the UE are set as at least one of DL, UL, and flexible (FL) in the TDD configuration.

The method of setting time domain and frequency domain resources when SBFD is used is being considered. For example, for UE #1 in Figure 2, the resources during the period when DL and UL overlap in the time domain can be set to the same as the existing DL resources (e.g., while avoiding the use of a portion of the UL resources using frequency domain resource allocation (FDRA)), minimizing the impact on the specifications/UE (see Figure 3A).

Also, for example, for UE #2 in Figure 2, the resources during the period when DL and UL overlap in the time domain can be set to the same as the existing UL resources (e.g., by using Frequency Domain Resource Allocation (FDRA) to avoid using a portion of the DL resources), minimizing the impact on the specifications/UE (see Figure 3B).

(analysis)
For an SBFD symbol/slot in which both a DL subband and a UL subband are set, a case is also assumed in which there is both DL reception in the DL subband and UL transmission in the UL subband in the SBFD symbol/slot. In such a case, the problem arises as to how the UE controls DL reception/UL transmission (or determines whether the transmission direction is DL reception/UL transmission).

For example, there may be cases where there is no explicit direction indication from the base station for the SBFD symbol/slot. In such cases, the problem arises as to how the UE determines the transmission direction for the SBFD symbol/slot (e.g., whether to perform UL transmission in the UL subband or DL reception in the DL subband for the SBFD symbol/slot).

[Problem 1]
As an example, the question arises as to how to control the decision of the transmission direction when DCI supports or allows scheduling/triggering of both DL reception and UL transmission in an SBFD symbol/slot.

[Problem 2]
Alternatively, the question arises as to how to control the decision of the transmission direction when both DL reception and UL transmission settings are supported or permitted by higher layer parameters in an SBFD symbol/slot.

[Problem 3]
Alternatively, the question arises as to how to control transmission and reception in SBFD symbols/slots when repetition (eg, repetition) is applied to DL reception/UL transmission.

The inventors therefore considered a method of controlling SBFD symbols/slots to solve at least one of the above problems 1-3, and came up with the present embodiment.

Below, embodiments of the present disclosure will be described in detail with reference to the drawings. The wireless communication methods according to the embodiments may be applied independently or in combination.

In this disclosure, "A/B" and "at least one of A and B" may be interpreted as interchangeable. Also, in this disclosure, "A/B/C" may mean "at least one of A, B, and C."

In this disclosure, terms such as notify, activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read as interchangeable. In this disclosure, terms such as support, control, capable of control, operate, and capable of operating may be read as interchangeable.

In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In this disclosure, Medium Access Control (MAC Control Element (CE)), update commands, activation/deactivation commands, etc. may be interchangeable.

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

In the present disclosure, the MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

In the present disclosure, the physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), etc.

In this disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In this disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

In this disclosure, DL reception and UL transmission in the same time resource, transmission and reception in which DL reception resources and UL transmission resources are frequency division multiplexed (FDM) (in subbands), simultaneous transmission and reception operation, simultaneous transmission and reception, full duplex (FD) communication, SBFD, and SBFD communication may be interpreted as interchangeable.

In this disclosure, non-SBFD, existing (up to Rel. 17), normal, transmission and reception in which DL reception resources and UL transmission resources are not frequency division multiplexed (FDM) (in subbands), etc. may be read as interchangeable.

In the present disclosure, a frequency resource for SBFD (e.g., DL/UL BWP) may be a frequency resource that is included in a frequency domain in a frequency resource for non-SBFD (e.g., DL/UL BWP) and is time division multiplexed (TDM) with the frequency resource for non-SBFD.

In the present disclosure, DL frequency resources for SBFD (e.g., DL BWP) and UL frequency resources for SBFD (e.g., UL BWP) may be frequency division multiplexed (FDM) with each other.

In this disclosure, the terms time domain, time resource, slot, subslot, and symbol may be interchangeable. In this disclosure, the terms frequency domain, frequency resource, resource block (RB), physical resource block (PRB), BWP, DL BWP, UL BWP, CC, band, and carrier may be interchangeable.

In the present disclosure, the starting position of a frequency resource, the lowest (or highest) RB/PRB in a frequency resource, and the RB/PRB with the lowest (or highest) index in a frequency resource may be interpreted as interchangeable.

In the present disclosure, the end position of a frequency resource, the highest (or lowest) RB/PRB in a frequency resource, and the RB/PRB with the highest (or lowest) index in a frequency resource may be interpreted as interchangeable.

(Wireless communication method)
<Tenth embodiment>
Implicit link direction indication for SBFD symbols/slots may be achieved by at least one of DL or UL scheduling/triggering DCI and special channels/signals configured by higher layers (e.g., SSB/Type 0 PDCCH/PRACH).

In this disclosure, the terms implicit link direction indication, control information, and DCI for DL or UL scheduling/triggering may be interpreted as interchangeable.

[Implicit link direction method]
Specifically, the implicit link direction indication may be achieved by at least one of the following indication methods 1 to 3.

[[Instruction Method 1]]
A set of symbols of a DL transmission scheduled/triggered by a DCI or a time unit overlapping with that set of symbols may be implicitly denoted as a DL symbol or DL time unit, and a set of symbols of a UL transmission scheduled/triggered by a DCI or a time unit overlapping with that set of symbols may be implicitly denoted as a UL symbol or UL time unit.

[[Instruction Method 2]]
A configured set of symbols for SSB reception/Type 0 PDCCH reception, or a time unit that overlaps with that set of symbols, is implicitly designated as a DL symbol or DL time unit.

[[Instruction Method 3]]
The set of symbols of a valid PRACH occasion and the set of N_gap symbols preceding that valid PRACH occasion, or a time unit that overlaps that set of symbols, is implicitly designated as a UL symbol or a UL time unit.

UE Operation
The UE action based on the implicit link direction indication may be at least one of the following

actions

1 and 2.

Action 1
Even if a UL frequency-time unit is within an implicitly indicated DL time unit or symbol, all resources on that DL time unit or symbol may be specified as unavailable for UL transmission. Even if a DL frequency-time unit is within an implicitly indicated UL time unit or symbol, all resources on that UL time unit or symbol may be specified as unavailable for DL reception.

UL transmissions that overlap an implicitly designated DL time unit or symbol may be specified to be canceled. UL transmissions that overlap an implicitly designated DL time unit or symbol may be specified to be rate matched to the remaining resources, if any, in the UL frequency-time unit (and flexible frequency-time unit) in time units or symbols (UL time units, flexible time units) that are not implicitly designated DL.

It may be specified that DL receptions that overlap an implicitly indicated UL time unit or symbol are canceled. DL receptions that overlap an implicitly indicated UL time unit or symbol are rate matched to the remaining resources, if any, in DL frequency-time units (and flexible frequency-time units) in time units or symbols that are not implicitly indicated as UL (DL time units, flexible time units).

Action 2
A DL frequency-time unit may be defined as being available for DL reception on a DL time unit, and a UL frequency-time unit may be defined as being available for UL transmission on a UL time unit.

DL receptions that overlap a UL frequency-time unit may be specified to be cancelled. DL receptions that overlap a UL frequency-time unit may be specified to be rate-matched to the remaining resources within the DL frequency-time unit (and flexible frequency-time unit) within the indicated DL time unit (and flexible time unit) or symbol.

UL transmissions that overlap a DL frequency-time unit may be specified to be canceled. UL transmissions that overlap a DL frequency-time unit may be specified to be rate-matched to the remaining resources within the UL frequency-time unit (and flexible frequency-time unit) within the indicated UL time unit (and flexible time unit) or symbol.

In the example of FIG. 4, DCI #1 in DL time unit #1 schedules DG PDSCH in SBFD unit #2, which implicitly designates SBFD unit #2 as a DL time unit. DCI #2 in DL time unit #1 schedules DG PUSCH in SBFD unit #3, which implicitly designates SBFD unit #3 as a UL time unit.

The DG PDSCH in SBFD unit #2 is received by the UE. The SPS PDSCH in SBFD unit #2 is canceled because it overlaps with the UL frequency-time unit. The SPS PUSCH in SBFD unit #2 is canceled because it overlaps with the DL time unit. The DG PUSCH in SBFD unit #3 is transmitted by the UE. The CG PUSCH in SBFD unit #3 is canceled because it overlaps with the DL frequency-time unit. The SPS PDSCH in SBFD unit #3 is canceled because it overlaps with the UL time unit.

[Limits (Error cases)]
An implicit link direction indication may obey at least one of the following constraints 1 to 3.

[[Restriction 1]]
It may be specified that the UE does not assume that a symbol or time unit is implicitly indicated to both DL and UL at the same time.

[[Restriction 2]]
It may be specified that the UE does not assume that DL reception resources scheduled/triggered by DCI or configured SSB reception/Type 0 PDCCH reception resources overlap any frequency-time unit indicated as UL or overlap any SBFD symbol/slot containing at least one UL frequency-time unit.

[[Restriction 3]]
It may also be specified that the UE does not assume that resources for UL reception scheduled/triggered by DCI, or resources between the symbols of a valid PRACH occasion and the N_gap symbols preceding that valid PRACH occasion, overlap any frequency-time unit indicated as DL, or overlap any SBFD symbol/slot that contains at least one DL frequency-time unit.

In the case of implicit link direction indication, the specific UE operation of the channels/signals (e.g., PDSCH/PUSCH/PUCCH/CSI-RS/PRS/SRS) configured by higher layers is described in the third embodiment.

According to this embodiment, the UE can appropriately determine the operation in the SBFD symbol/slot.

First Embodiment
The first embodiment describes an example of a control method when DL reception and UL transmission are dynamically scheduled/triggered by DCI in an SBFD symbol/slot.

In this disclosure, DL reception may be a DL channel (e.g., PDSCH) or DMRS for PDSCH. UL transmission may be an UL channel (e.g., PUSCH/PUCCH) or DMRS for PUSCH/DMRS for PUCCH.

At least one of the following options 1-1 to 1-3 may be applied to dynamically scheduled/triggered DL reception (e.g., in a DL subband) and dynamically scheduled/triggered UL transmission (e.g., in a UL subband) in the same SBFD symbol/slot.

DL reception and UL transmission may be scheduled/triggered by different DCIs. In this disclosure, this may mean that DL reception in an SBFD symbol/slot is scheduled/triggered/configured in the DL subband, and UL transmission in an SBFD symbol/slot is scheduled/triggered/configured in the UL subband.

[Option 1-1]
The UE may not be expected to detect (or monitor) a first DCI that schedules/trigger DL reception for a certain SBFD symbol/slot and a second DCI that schedules/trigger UL transmission for the same SBFD symbol/slot (see FIG. 5). Alternatively, the UE may not be expected to detect a first DCI that schedules/trigger UL transmission for a certain SBFD symbol/slot and a second DCI that schedules/trigger DL reception for the same SBFD symbol/slot.

For example, when a UE detects a first DCI that schedules/triggers DL reception for a certain SBFD symbol/slot, the UE may not assume (or be required) to detect or monitor a second DCI that schedules/triggers UL transmission for the same SBFD symbol/slot. Alternatively, when a UE detects a first DCI that schedules/triggers UL transmission for a certain SBFD symbol/slot, the UE may not assume (or be required) to detect or monitor a second DCI that schedules/triggers DL reception for the same SBFD symbol/slot.

In the present disclosure, the first DCI may be a DCI that is transmitted earlier in the time domain (or detected earlier by the UE) than the second DCI. In the present disclosure, the first DCI/second DCI may be transmitted within an SBFD symbol/slot, or may be transmitted within a symbol/slot other than the SBFD symbol/slot (e.g., a time domain where only DL transmission is set). Alternatively, the UE may not be expected to detect both the first DCI and the second DCI in the SBFD symbol/slot.

Alternatively, the UE may not assume that DL reception and UL transmission are scheduled/triggered in the same SBFD symbol/slot.

The base station may control not to transmit both a DCI that schedules/triggers DL reception for a certain SBFD symbol/slot and a DCI that schedules/triggers UL transmission for the same SBFD symbol/slot (to transmit only one of them). Alternatively, the base station may control not to schedule/trigger DL reception and UL transmission in the same SBFD symbol/slot.

"variation"
The UE may not be expected to detect a first DCI that schedules/trigger DL reception for a first set of SBFD symbols and a second DCI that schedules/trigger UL transmission for a second set of SBFD symbols. Alternatively, the UE may not be expected to detect a first DCI that schedules/trigger UL transmission for the first set of SBFD symbols and a second DCI that schedules/trigger DL reception for the second set of SBFD symbols.

The first set of SBFD symbols and the second set of SBFD symbols may be regions separated by a predetermined number of symbols (e.g., N). This creates an offset (or gap) of a predetermined number of symbols when performing DL reception and UL transmission in the SBFD symbol/slot, allowing DL-UL switching to be performed appropriately.

[Option 1-2]
When the UE detects a first DCI that schedules/triggers DL reception for a certain SBFD symbol/slot and a second DCI that schedules/triggers UL transmission for the same SBFD symbol/slot, the UE controls DL reception/UL transmission based on transmission conditions of the first DCI and the second DCI. The transmission conditions may be at least one of start/end timings of the first DCI and the second DCI and a predetermined timeline.

Alternatively, when the UE detects a first DCI that schedules/triggers UL transmission for a certain SBFD symbol/slot and a second DCI that schedules/triggers DL reception for the same SBFD symbol/slot, the UE controls DL reception/UL transmission based on at least one of the start/end timings of the first DCI and the second DCI and a specified timeline.

For example, if the second DCI starts/ends after the first DCI starts/ends, the UE may control to perform UL transmission/DL reception scheduled/triggered by the second DCI (see FIG. 6). For example, if the second DCI that schedules/trigger UL transmission starts/ends after the first DCI that schedules/trigger DL reception starts/ends, the UE controls to perform UL transmission. On the other hand, if the second DCI that schedules/trigger DL reception starts/ends after the first DCI that schedules/trigger UL transmission starts/ends, the UE controls to perform DL reception.

In other words, the UE may give priority to DL reception/UL transmission scheduled/triggered by a DCI received later in the time domain. Note that the UE may control to perform UL transmission/DL reception scheduled/triggered by a second DCI when a specified timeline is satisfied.

When a specified timeline is met, at least one (or all) of the following Timelines #1 to #3 may be met.

Timeline #1
The end (e.g., end symbol) of the second DCI format may be X1 symbols before the start of DL reception/UL transmission scheduled/triggered by the first DCI. X1 may be determined depending on the PDSCH/PUSCH processing time/UL cancellation timeline. The PDSCH/PUSCH processing time may be defined based on a period (e.g., N _PDSCH , T _proc,2 , etc.) defined in a legacy system (e.g., before Rel. 17). The UL cancellation timeline may be defined based on a period (e.g., T ^mux _proc,1 , T ^mux _proc,2 , T ^mux _proc,release , etc.) defined in a legacy system (e.g., before Rel. 17).

Alternatively, X1 may be determined based on UE capabilities, or may be set by the base station to the UE using higher layer parameters, etc.

Timeline #2
The end (e.g., end symbol) of the first DCI format may be X2 symbols before the start of DL reception/UL transmission scheduled/triggered by the first DCI. X2 may be determined depending on the PDSCH/PUSCH processing time/UL cancellation timeline. The PDSCH/PUSCH processing time may be defined based on a period (e.g., N _PDSCH , T _proc,2 , etc.) defined in a legacy system (e.g., before Rel. 17). The UL cancellation timeline may be defined based on a period (e.g., T ^mux _proc,1 , T ^mux _proc,2 , T ^mux _proc,release , etc.) defined in a legacy system (e.g., before Rel. 17).

Alternatively, X2 may be determined based on UE capabilities, or may be set by the base station to the UE using higher layer parameters, etc.

Timeline #3
The end (e.g., end symbol) of the second DCI format may be X3 symbols before the start of DL reception/UL transmission scheduled/triggered by the second DCI. X3 may be determined depending on the PDSCH/PUSCH processing time/UL cancellation timeline. The PDSCH/PUSCH processing time may be defined based on a period (e.g., N _PDSCH , T _proc,2 , etc.) defined in a legacy system (e.g., before Rel. 17). The UL cancellation timeline may be defined based on a period (e.g., T ^mux _proc,1 , T ^mux _proc,2 , T ^mux _proc,release , etc.) defined in a legacy system (e.g., before Rel. 17).

Alternatively, X3 may be determined based on UE capabilities, or may be set by the base station to the UE using higher layer parameters, etc.

X1, X2, and X3 may be defined to have the same value or different values.

The UE may detect a first DCI that schedules/triggers DL reception for a certain SBFD symbol/slot and a second DCI that schedules/triggers UL transmission for the same SBFD symbol/slot, and may determine that an error case exists if a predetermined timeline is not met. Alternatively, if the predetermined timeline is not met, the UE may control to perform DL reception/UL transmission scheduled/triggered by the first DCI.

Alternatively, if the second DCI starts/ends after the first DCI starts/ends, the UE may control to perform UL transmission/DL reception scheduled/triggered by the first DCI. In other words, the UE may prioritize DL reception/UL transmission scheduled/triggered by the DCI received earlier in the time domain.

[Option 1-3]
When a UE detects a first DCI that schedules/trigger DL reception for a certain SBFD symbol/slot and a second DCI that schedules/trigger UL transmission for the same SBFD symbol/slot, the UE controls the DL reception/UL transmission based on at least one of the start/end timing of the DL reception and UL transmission and a specified timeline.

Alternatively, when the UE detects a first DCI that schedules/triggers UL transmission for a certain SBFD symbol/slot and a second DCI that schedules/triggers DL reception for the same SBFD symbol/slot, the UE controls DL reception/UL transmission based on at least one of the start/end timing of DL reception and UL transmission and a specified timeline.

For example, if the start timing (or end timing) of DL reception is earlier than the start timing (or end timing) of UL transmission, the UE may be controlled to perform DL reception. Alternatively, if the start timing (or end timing) of UL transmission is earlier than the start timing (or end timing) of DL reception, the UE may be controlled to perform UL transmission.

Alternatively, if the start timing (or end timing) of DL reception is later than the start timing (or end timing) of UL transmission, the UE may be controlled to perform DL reception. Alternatively, if the start timing (or end timing) of UL transmission is later than the start timing (or end timing) of DL reception, the UE may be controlled to perform UL transmission.

The UE may control whether to perform UL transmission or DL reception based on the start/end timing of DL reception and UL transmission when a specified timeline is met.

When a specified timeline is met, at least one (or all) of the following Timeline #1 to Timeline #2 may be met.

Timeline #1
The end (e.g., end symbol) of the first DCI format may be X1 symbols before the start of DL reception/UL transmission scheduled/triggered by the first DCI. X1 may be determined depending on the PDSCH/PUSCH processing time/UL cancellation timeline. The PDSCH/PUSCH processing time may be defined based on a period (e.g., N _PDSCH , T _proc,2 , etc.) defined in a legacy system (e.g., before Rel. 17). The UL cancellation timeline may be defined based on a period (e.g., T ^mux _proc,1 , T ^mux _proc,2 , T ^mux _proc,release , etc.) defined in a legacy system (e.g., before Rel. 17).

Timeline #2
The end (e.g., end symbol) of the second DCI format may be X2 symbols before the start of DL reception/UL transmission scheduled/triggered by the second DCI. X2 may be determined depending on the PDSCH/PUSCH processing time/UL cancellation timeline. The PDSCH/PUSCH processing time may be defined based on a period (e.g., N _PDSCH , T _proc,2 , etc.) defined in a legacy system (e.g., before Rel. 17). The UL cancellation timeline may be defined based on a period (e.g., T ^mux _proc,1 , T ^mux _proc,2 , T ^mux _proc,release , etc.) defined in a legacy system (e.g., before Rel. 17).

X1 and X2 may be defined as the same value or different values.

The UE may detect a first DCI that schedules/triggers DL reception for a certain SBFD symbol/slot and a second DCI that schedules/triggers UL transmission for the same SBFD symbol/slot, and may determine that an error case exists if a predetermined timeline (e.g., timelines 1 and 2) is not satisfied. Alternatively, if a predetermined timeline (e.g., one of timelines 1 and 2) is not satisfied, the UE may control to perform UL transmission or DL reception that satisfies the timeline.

Second Embodiment
In the second embodiment, an example of a control method when DL reception and UL transmission are set by higher layer parameters in an SBFD symbol/slot will be described.

In the same SBFD symbol/slot, for DL reception (e.g., in a DL subband) set in a higher layer and UL transmission (e.g., in a UL subband) set in a higher layer, control may be performed to perform either UL transmission or DL reception based on a predetermined priority. Specifically, for DL reception (e.g., in a DL subband) set in a higher layer and UL transmission (e.g., in a UL subband) set in a higher layer in the same SBFD symbol/slot, at least one of the following options 2-1 to 2-6 may be applied. DL reception and UL transmission may be set by different higher layer parameters.

[Option 2-1]
Based on the transmission type of UL transmission/DL reception, the priority of UL transmission and DL reception may be determined (see FIG. 7). The transmission type may be classified based on at least two of broadcast transmission, group common transmission, and unicast transmission.

Channels/signals corresponding to broadcast/group common transmissions configured in a higher layer may be set to a higher priority than channels/signals corresponding to unicast transmissions configured in a higher layer.

If DL reception corresponding to broadcast/group common transmission configured by a higher layer and UL transmission corresponding to unicast transmission configured by a higher layer are configured in the same SBFD symbol/slot, the UE may be controlled to perform DL reception (e.g., reception of a DL channel/signal). In this case, the UE may be controlled not to perform UL transmission (or the UE may not be required to perform UL transmission).

Alternatively, if UL transmission corresponding to broadcast/group common transmission configured by a higher layer and DL reception corresponding to unicast transmission configured by a higher layer are configured in the same SBFD symbol/slot, the UE may be controlled to perform UL transmission (e.g., transmission of a UL channel/signal). In this case, the UE may be controlled not to perform DL reception (or the UE may not be required to monitor a DL channel/signal).

In addition, channels/signals corresponding to unicast transmissions set in a higher layer may be set to have a higher priority than channels/signals corresponding to broadcast/group common transmissions set in a higher layer.

[Option 2-2]
The priority of UL transmission and DL reception may be determined based on layer 1 priority (eg, L1 priority).

Layer 1 priority may be, for example, a priority set for UL transmission/DL reception activated/deactivated by DCI (e.g., semi-persistent DL reception, configuration grant-based UL transmission).

When DL reception (e.g., SPS PDSCH) activated by the DCI format and UL transmission (e.g., configuration grant-based PUSCH, PUCCH) configured by a higher layer are configured in the same SBFD symbol/slot, the priority of DL reception and UL transmission may be determined based on the physical priority (e.g., physical priority). The physical priority may be indicated by the DCI that activates DL reception. For example, the DCI may indicate an L1 priority (e.g., HP/LP HARQ-ACK for SPS configuration) indicating the physical priority HP (high)/LP (low).

When a high priority grant PUSCH without DCI (e.g., HP CG PUSCH without DCI) or a high priority PUCCH without DCI (e.g., HP PUCCH without DCI) and an SPS PDSCH corresponding to a low priority HARQ-ACK are configured in the same SBFD symbol/slot, the UE prioritizes UL transmission and does not need to perform DL reception (see Figure 8). A high priority grant PUSCH without DCI or a high priority PUCCH without DCI may be a high priority scheduling request or a high priority SPS HARQ-ACK.

When a low-priority grant PUSCH without DCI (e.g., LP CG PUSCH without DCI) or a low-priority PUCCH without DCI (e.g., LP PUCCH without DCI) and an SPS PDSCH corresponding to a high-priority HARQ-ACK are configured in the same SBFD symbol/slot, the UE prioritizes DJ reception and does not need to perform UL transmission (see Figure 8).

When DL reception (e.g., SPS PDSCH) activated by DCI format and UL transmission (e.g., PUSCH, PUCCH based on configuration grant (e.g., type 2)) activated by DCI format are configured in the same SBFD symbol/slot, the priority of DL reception and UL transmission may be determined based on the physical priority (e.g., physical priority). The physical priority may be indicated by the DCI activating DL reception/DCI activating UL transmission, respectively.

[Option 2-3]
The priority of UL transmission and DL reception may be determined based on the starting/ending positions (e.g., starting/ending positions) of DL reception and UL transmission.

If DL reception configured by a higher layer and UL transmission configured by a higher layer are set to the same SBFD symbol/slot, the UE may determine the priority of UL transmission and DL reception based on the start/end positions of DL reception and UL transmission.

For example, if the start timing of DL reception set by the higher layer is earlier than the start timing of UL transmission set by the higher layer, the UE may prioritize DL reception (not perform UL transmission). Alternatively, if the start timing of UL transmission set by the higher layer is earlier than the start timing of DL reception set by the higher layer, the UE may prioritize UL transmission (not perform DL reception).

Alternatively, if the start timing of DL reception set by the higher layer is later than the start timing of UL transmission set by the higher layer, the UE may prioritize DL reception (not perform UL transmission). Alternatively, if the start timing of UL transmission set by the higher layer is later than the start timing of DL reception set by the higher layer, the UE may prioritize UL transmission (not perform DL reception).

Alternatively, if the end timing of DL reception set by the higher layer is earlier than the end timing of UL transmission set by the higher layer, the UE may prioritize DL reception (not perform UL transmission). Alternatively, if the end timing of UL transmission set by the higher layer is earlier than the end timing of DL reception set by the higher layer, the UE may prioritize UL transmission (not perform DL reception).

Alternatively, if the end timing of DL reception set by the higher layer is later than the end timing of UL transmission set by the higher layer, the UE may prioritize DL reception (not perform UL transmission). Alternatively, if the end timing of UL transmission set by the higher layer is later than the end timing of DL reception set by the higher layer, the UE may prioritize UL transmission (not perform DL reception).

[Option 2-4]
Based on predefined priorities, the priorities of UL transmission and DL reception may be determined, for example, priorities may be defined/set for DL channels/signals and UL channels/signals.

At least one of the following priority rules #1 to #3 may be defined/set as a priority rule.

Priority Rule #1
The PUCCH is set to have a higher priority than the PDSCH. For example, if the PDSCH (e.g., in a DL subband) and the PUCCH (e.g., in a UL subband) are set to the same SBFD symbol/slot, the UE may be controlled to transmit the PUCCH.

Priority Rule #2
The PDCCH is set to have a higher priority than the PUSCH. For example, if the PDCCH (e.g., in a DL subband) and the PUSCH (e.g., in a UL subband) are set to the same SBFD symbol/slot, the UE may be controlled to receive the PDCCH.

Priority Rule #3
The priority order between PDCCH/PSSCH/CSI-RS/PUSCH/PUCCH/SRS may be defined in the specifications or may be set from the base station to the UE by higher layer signaling.

[Option 2-5]
The priority of UL transmission and DL reception may be determined based on the type of transmission method of the DL reception and the UL transmission, which may be classified as semi-persistent or periodic.

For example, channels/signals/reference signals that are transmitted semi-persistently may be set to a higher priority than channels/signals/reference signals that are transmitted periodically.

For example, if the semi-persistently transmitted CSI-RS (e.g., in the DL subband) and the periodically transmitted SRS (e.g., in the UL subband) are set to the same SBFD symbol/slot, the UE may be controlled to receive the CSI-RS (and not transmit the SRS).

Alternatively, if the semi-persistent SRS (e.g., in the UL subband) and the periodic CSI-RS (e.g., in the DL subband) are set to the same SBFD symbol/slot, the UE may be controlled to transmit the SRS (and not receive the CSI-RS).

[Option 2-6]
Some or all of Option 2-1 to Option 2-5 may be applied in combination. When multiple options are applied in combination, one option may be applied first, and then the other options may be applied. Which option is applied first may be defined in the specification, or may be set in the UE from the base station by higher layer signaling.

[variation]
The UL transmission/DL reception priority rules shown in Options 2-1 to 2-6 may be applied when a dynamically scheduled/triggered DL reception (e.g., in a DL subband) and a higher layer configured UL transmission (e.g., in a UL subband) overlap in the same SBFD symbol/slot.

Alternatively, the UL transmission/DL reception priority rules shown in Option 2-1 to Option 2-6 may be applied when DL reception configured by higher layers (e.g., in a DL subband) and dynamically scheduled/triggered UL transmission (e.g., in a UL subband) overlap in the same SBFD symbol/slot.

Alternatively, the UL transmission/DL reception priority rules shown in Option 2-1 to Option 2-6 may be applied when a dynamically scheduled/triggered DL reception (e.g., in a DL subband) and a dynamically scheduled/triggered UL transmission (e.g., in a UL subband) overlap in the same SBFD symbol/slot.

Third Embodiment
The third embodiment describes an example of a control method when DL reception and UL transmission are scheduled/triggered/configured in the same SBFD symbol/slot and repetition is applied to at least one of the DL reception and UL transmission.

The repetition may be at least one of PDSCH repetition, PUCCH repetition, and PUSCH repetition.

When DL reception and UL transmission are scheduled/triggered/configured in the same SBFD symbol/slot, and repetition is applied to at least one of DL reception and UL transmission (see FIG. 9), at least one of the following options 3-1 to 3-3 may be applied. FIG. 9 shows a case where repetition is applied to both PDSCH and PUSCH, but the number of repetitions that can be applied is not limited to this.

[Option 3-1]
Assuming at least one of the following scenarios 3-1 and 3-2, at least one of the 0th embodiment, the first embodiment, and the second embodiment may be applied (or reused).

《Assumption 3-1》
For repetitions configured by higher layers (e.g. PDSCH/PUSCH/PUCCH repetitions), each repetition may be considered as DL reception/UL transmission configured by higher layers.

《Assumption 3-2》
For repetition (e.g., PDSCH/PUSCH/PUCCH repetition) indicated by a dynamic grant (DG) (e.g., DCI), at least one of the following options 3-1-1 to 3-1-2 may be applied.

[Option 3-1-1]
The repetitions indicated by the dynamic grant may be considered as dynamically (eg, by DCI) scheduled DL reception/UL transmission.

[Option 3-1-2]
Among the repetitions indicated by the dynamic grant, certain repetitions may be regarded as DL reception/UL transmissions dynamically (e.g., by DCI) scheduled, and other repetitions may be regarded as DL reception/UL transmissions configured by a higher layer.

The particular repetition may be the first repetition. For example, if the number of repetitions is 4, the first repetition may be considered as DL reception/UL transmission scheduled dynamically (e.g., by DCI), and the other repetitions (e.g., 2-4) may be considered as DL reception/UL transmission configured by higher layers.

Different options may be applied for DL reception/UL transmission. Alternatively, different options may be applied for each channel.

[Option 3-2]
The priority of UL transmission and DL reception may be determined based on the repetition condition applied to DL reception/UL transmission.

The priority of UL transmission and DL reception may be determined based on at least one of the repetition index (e.g., repetition index) and the total repetition number (e.g., total repetition number). For example, DL reception/UL transmission with a smaller repetition index may be prioritized. Alternatively, DL reception/UL transmission with a larger repetition index may be prioritized. DL reception/UL transmission to which repetition transmission is not applied may be considered to have a repetition index of 1.

Assume that PDSCH repetition index #i (e.g., in a DL subband) and PUSCH/PUCCH repetition index #j (e.g., in a UL subband) are scheduled/triggered/configured in the same SBFD symbol/slot. If i≦j (or i<j), the UE may be controlled to receive PDSCH repetition index #i (and not transmit PUSCH/PUCCH repetition index #j).

Alternatively, if i≦j (or i<j), the UE may be controlled to transmit PUSCH/PUCCH repetition index #j (and not to receive PDSCH repetition index #i).

Assume that PDSCH repetitions (e.g., in a DL subband) and PUSCH/PUCCH repetitions (e.g., in a UL subband) are scheduled/triggered/configured in the same SBFD symbol/slot. If the total number of PDSCH repetitions is less than the total number of PUSCH/PUCCH repetitions, the UE may be controlled to receive PDSCH repetitions (not to transmit PUSCH/PUCCH repetitions). Alternatively, if the total number of PDSCH repetitions is less than the total number of PUSCH/PUCCH repetitions, the UE may be controlled to transmit PUSCH/PUCCH repetitions (not to receive PDSCH repetitions). DL reception/UL transmission, where repetition transmission does not apply, may be considered to have a repetition number of 1.

Alternatively, if the total number of PDSCH repetitions is greater than the total number of PUSCH/PUCCH repetitions, the UE may be controlled to receive PDSCH repetitions (not to transmit PUSCH/PUCCH repetitions). Alternatively, if the total number of PDSCH repetitions is greater than the total number of PUSCH/PUCCH repetitions, the UE may be controlled to transmit PUSCH/PUCCH repetitions (not to receive PDSCH repetitions).

[Option 3-3]
Based on the start of the first iteration (or the end of the last iteration) applied to DL reception/UL transmission, the priority of UL transmission and DL reception may be determined.

Assume that PDSCH repetitions (e.g., in a DL subband) and PUSCH/PUCCH repetitions (e.g., in a UL subband) are scheduled/triggered/configured in the same SBFD symbol/slot. If the first repetition of PDSCH repetitions (e.g., Rep#1 of N repetitions (Rep#1-Rep#N)) precedes PUSCH/PUCCH repetitions (e.g., Rep#1 of M repetitions (Rep#1-Rep#M)), the UE may be controlled to receive PDSCH repetitions (and not transmit PUSCH/PUCCH repetitions).

Alternatively, if the first repetition of the PDSCH repetition (e.g., Rep#1 of N repetitions (Rep#1-Rep#N)) precedes the PUSCH/PUCCH repetition (e.g., Rep#1 of M repetitions (Rep#1-Rep#M)), the UE may be controlled to transmit the PUSCH/PUCCH repetition (not to receive the PDSCH repetition).

<Additional Information>
[Notification of information to UE]
In the above-described embodiments, any information may be notified to the UE (from a network (NW) (e.g., a base station (BS))) (in other words, any information is received from the BS by the UE) using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

When the above notification is performed by a MAC CE, the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader that is not specified in existing standards.

When the notification is made by a DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.

Furthermore, notification of any information to the UE in the above-mentioned embodiments may be performed periodically, semi-persistently, or aperiodically.

[Information notification from UE]
In the above-described embodiments, notification of any information from the UE (to the NW) (in other words, transmission/report of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel (e.g., PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.

If the notification is made by a MAC CE, the MAC CE may be identified by including a new LCID in the MAC subheader that is not specified in existing standards.

If the notification is made by UCI, the notification may be transmitted using PUCCH or PUSCH.

Furthermore, in the above-mentioned embodiments, notification of any information from the UE may be performed periodically, semi-persistently, or aperiodically.

[Application of each embodiment]
At least one of the above-mentioned embodiments may be applied when a specific condition is satisfied, which may be specified in a standard or may be notified to a UE/BS using higher layer signaling/physical layer signaling.

At least one of the above-described embodiments may be applied only to UEs that have reported or support a particular UE capability.

The specific UE capabilities may indicate at least one of the following:
Supporting dynamically scheduled/triggered DL reception (in DL sub-bands) and dynamically scheduled/triggered UL transmission (in UL sub-bands) in the same SBFD symbol/slot;
Supporting higher layer configured DL reception (in DL sub-band) and higher layer configured UL transmission (in UL sub-band) in the same SBFD symbol/slot;
Supporting dynamically scheduled/triggered DL reception (in DL sub-bands) and higher layer configured UL transmission (in UL sub-bands) in the same SBFD symbol/slot;
Supporting higher layer configured DL reception (in DL sub-bands) and dynamically scheduled/triggered UL transmission (in UL sub-bands) in the same SBFD symbol/slot;
Supporting DL reception (in DL sub-bands) and UL transmission (in UL sub-bands) with repetition applied in the same SBFD symbol/slot;
Support DL reception (in DL sub-band) and UL transmission (in UL sub-band) with repetition in the same SBFD symbol/slot.

Furthermore, the above-mentioned specific UE capabilities may be capabilities that are applied across all frequencies (commonly regardless of frequency), capabilities per frequency (e.g., one or a combination of a cell, band, band combination, BWP, component carrier, etc.), capabilities per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), capabilities per subcarrier spacing (SubCarrier Spacing (SCS)), or capabilities per Feature Set (FS) or Feature Set Per Component-carrier (FSPC).

The specific UE capabilities may be capabilities that are applied across all duplexing methods (commonly regardless of the duplexing method), or may be capabilities for each duplexing method (e.g., Time Division Duplex (TDD) and Frequency Division Duplex (FDD)).

Furthermore, at least one of the above-mentioned embodiments may be applied when the UE configures/activates/triggers specific information related to the above-mentioned embodiments (or performs the operations of the above-mentioned embodiments) by higher layer signaling/physical layer signaling. For example, the specific information may be information indicating that SBFD is enabled, any RRC parameters for a specific release (e.g., Rel. 18/19), etc.

If the UE does not support at least one of the above specific UE capabilities or the above specific information is not configured, the UE may, for example, apply Rel. 15/16 operations.

(Additional Note)
With respect to one embodiment of the present disclosure, the following invention is noted.
[Appendix 1]
A terminal having a receiving unit that receives at least one of first information instructing DL reception and second information instructing UL transmission in a time domain to which subband non-overlapping full-duplex signaling is applied, and a control unit that, when the instructions for DL reception and UL transmission are supported for the same time domain to which the subband non-overlapping full-duplex signaling is applied, controls to select and perform one of the DL reception and the UL transmission based on at least one of the transmission conditions of the first information and the second information, the conditions applied to the DL reception and the UL transmission, and predetermined conditions.
[Appendix 2]
The terminal described in Appendix 1, wherein, when the first information and the second information are downlink control information, the control unit controls to select and perform one of the DL reception and the UL transmission based on the transmission timing of first downlink control information corresponding to the first information and downlink control information corresponding to the second information.
[Appendix 3]
The terminal according to

claim

1 or 2, wherein, when at least one of the first information and the second information is an upper layer parameter, the control unit controls to select and perform one of the DL reception and the UL transmission based on a transmission type of the DL reception and the UL transmission.
[Appendix 4]
A terminal according to any one of Supplementary Note 1 to Supplementary Note 3, wherein when repetition is applied to at least one of the DL reception and the UL transmission, the control unit controls to select and perform one of the DL reception and the UL transmission based on a repetition condition.

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

FIG. 10 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may simply be referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE) specified by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5G NR), or the like.

The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

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

The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (e.g., dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are arranged within the macrocell C1 and form a small cell C2 that is narrower than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The arrangement and number of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

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

In addition, the user terminal 20 may communicate using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

The multiple base stations 10 may be connected by wire (e.g., optical fiber conforming to the Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, base station 11, which corresponds to the upper station, may be called an Integrated Access Backhaul (IAB) donor, and base station 12, which corresponds to a relay station, may be called an IAB node.

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

The core network 30 may include network functions (Network Functions (NF)) such as, for example, a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). Note that multiple functions may be provided by one network node. In addition, communication with an external network (e.g., the Internet) may be performed via the DN.

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

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

The radio access method may also be called a waveform. In the wireless communication system 1, other radio access methods (e.g., other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL radio access methods.

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

In addition, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.

User data, upper layer control information, System Information Block (SIB), etc. are transmitted via PDSCH. User data, upper layer control information, etc. may also be transmitted via PUSCH. Furthermore, Master Information Block (MIB) may also be transmitted via PBCH.

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

Note that the DCI for scheduling the PDSCH may be called a DL assignment or DL DCI, and the DCI for scheduling the PUSCH may be called a UL grant or UL DCI. Note that the PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

A control resource set (COntrol REsource SET (CORESET)) and a search space may be used to detect the PDCCH. The CORESET corresponds to the resources to search for DCI. The search space corresponds to the search region and search method of PDCCH candidates. One CORESET may be associated with one or multiple search spaces. The UE may monitor the CORESET associated with a search space based on the search space configuration.

A search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," "CORESET setting," etc. in this disclosure may be read as interchangeable.

The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK/NACK, etc.), and a scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

Note that in this disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for PBCH) may be called an SS/PBCH block, an SS Block (SSB), etc. In addition, the SS, SSB, etc. may also be called a reference signal.

In addition, in the wireless communication system 1, a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific Reference Signal).

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

Note that this example mainly shows the functional blocks of the characteristic parts of this embodiment, and the base station 10 may also be assumed to have other functional blocks necessary for wireless communication. Some 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 configured from a controller, a control circuit, etc., which are described based on a common understanding in the technical field to which this disclosure pertains.

The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing of communication channels (setting, release, etc.), status management of the base station 10, management of radio resources, etc.

The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) 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 transceiver unit 120 may be composed of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on a common understanding in the technical field to which the present disclosure relates.

The transceiver unit 120 may be configured as an integrated transceiver 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 reception unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

The transmitting/receiving antenna 130 can be configured as an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.

The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data and control information obtained from the control unit 110 to generate a bit string to be transmitted.

The transceiver 120 (transmission processor 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

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

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

The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes providing NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

Note that the transmitter and receiver of the base station 10 in this disclosure may be configured with at least one of the transmitter/receiver 120, the transmitter/receiver antenna 130, and the transmission path interface 140.

The transceiver 120 may transmit to the terminal at least one of first information instructing DL reception and second information instructing UL transmission in a time domain to which subband non-overlapping full-duplex transmission is applied.

When DL reception and UL transmission instructions are supported for the same time region to which subband non-overlapping full duplex transmission is applied, the control unit 110 may instruct the terminal to select either DL reception or UL transmission using at least one of the transmission conditions of the first information and the second information, the conditions applied to DL reception and UL transmission, and the conditions set in advance.

(User terminal)
12 is a diagram showing an example of the configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the control unit 210, the transceiver unit 220, and the transceiver antenna 230 may each include one or more.

Note that this example mainly shows the functional blocks of the characteristic parts of this embodiment, and the user terminal 20 may also be assumed to have other functional blocks necessary for wireless communication. Some 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 configured from a controller, a control circuit, etc., which are described based on a common understanding in the technical field to which this disclosure pertains.

The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception using the transceiver unit 220 and the transceiver antenna 230, measurement, etc. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.

The transceiver 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 transceiver unit 220 may be composed of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on a common understanding in the technical field to which the present disclosure relates.

The transceiver unit 220 may be configured as an integrated transceiver 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 reception unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

The transmitting/receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.

The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

The transceiver 220 may form at least one of the transmit beam and receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

The transceiver 220 (transmission processor 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on the data and control information acquired from the controller 210, and generate a bit string to be transmitted.

The transceiver 220 (transmission processor 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

Whether or not to apply DFT processing may be based on the settings of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, it is not necessary to perform DFT processing as the above-mentioned transmission processing.

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

On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

The transceiver 220 (reception processor 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

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

In addition, the transmitting unit and receiving unit of the user terminal 20 in this disclosure may be configured by at least one of the transmitting/receiving unit 220 and the transmitting/receiving antenna 230.

The transceiver unit 220 may receive at least one of first information instructing DL reception and second information instructing UL transmission in a time domain to which subband non-overlapping full-duplex transmission is applied.

When DL reception and UL transmission instructions are supported for the same time region to which subband non-overlapping full duplex transmission is applied, the control unit 210 may control to select and perform either DL reception or UL transmission based on at least one of the transmission conditions of the first information and the second information, the conditions applied to DL reception and UL transmission, and the conditions set in advance.

If the first information and the second information are downlink control information, the control unit 210 may control to select and perform either DL reception or UL transmission based on the transmission timing of the first downlink control information corresponding to the first information and the downlink control information corresponding to the second information.

If at least one of the first information and the second information is an upper layer parameter, the control unit 210 may control the selection of either DL reception or UL transmission based on the transmission type of DL reception or UL transmission.

When repetition is applied to at least one of DL reception and UL transmission, the control unit 210 may control the selection of either DL reception or UL transmission based on the repetition conditions.

(Hardware configuration)
The block diagrams used in the description of the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. The method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (for example, using wires, wirelessly, etc.). The functional blocks may be realized by combining the one device or the multiple devices with software.

Here, the functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs the transmission function may be called a transmitting unit, a transmitter, and the like. In either case, as mentioned above, there are no particular limitations on the method of realization.

For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 13 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to one embodiment. The above-mentioned base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

In addition, in this disclosure, the terms apparatus, circuit, device, section, unit, etc. may be interpreted as interchangeable. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figures, or may be configured to exclude some of the devices.

For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, sequentially, or using other techniques. Furthermore, the processor 1001 may be implemented by one or more chips.

The functions of the base station 10 and the user terminal 20 are realized, for example, by loading specific software (programs) onto hardware such as the processor 1001 and memory 1002, causing the processor 1001 to perform calculations, control communications via the communication device 1004, and control at least one of the reading and writing of data in the memory 1002 and storage 1003.

The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, etc. For example, at least a portion of the above-mentioned control unit 110 (210), transmission/reception unit 120 (220), etc. may be realized by the processor 1001.

The processor 1001 also reads out programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these. The programs used are those that cause a computer to execute at least some of the operations described in the above embodiments. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks.

Memory 1002 is a computer-readable recording medium and may be composed of at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other suitable storage media. Memory 1002 may also be called a register, cache, main memory, etc. Memory 1002 can store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to one embodiment of the present disclosure.

Storage 1003 is a computer-readable recording medium and may be composed of at least one of a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

The communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-mentioned transmitting/receiving unit 120 (220), transmitting/receiving antenna 130 (230), etc. may be realized by the communication device 1004. The transmitting/receiving unit 120 (220) may be implemented as a transmitting unit 120a (220a) and a receiving unit 120b (220b) that are physically or logically separated.

The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one structure (e.g., a touch panel).

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

Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

(Modification)
In addition, the terms described in this disclosure and the terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be read as mutually interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may be called a pilot, a pilot signal, or the like depending on the applied standard. A component carrier (CC) may also be called a cell, a frequency carrier, a carrier frequency, or the like.

A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

Here, the numerology may be a communication parameter that is applied to at least one of the transmission and reception of a signal or channel. The numerology may indicate, for example, at least one of the following: SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame configuration, a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.

A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.). A slot may also be a time unit based on numerology.

A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units when transmitting a signal. A different name may be used for a radio frame, a subframe, a slot, a minislot, and a symbol, respectively. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in this disclosure may be read as interchangeable.

For example, one subframe may be called a TTI, multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. In other words, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station schedules each user terminal by allocating radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) in TTI units. Note that the definition of TTI is not limited to this.

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

Note that when one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit of scheduling. In addition, the number of slots (minislots) that constitute the minimum time unit of scheduling may be controlled.

A TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

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

Furthermore, an RB may include one or more symbols in the time domain and may be one slot, one minislot, one subframe, or one TTI in length. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

In addition, one or more RBs may be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

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

A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a common reference point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

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

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

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

In addition, the information, parameters, etc. described in this disclosure may be represented using absolute values, may be represented using relative values from a predetermined value, or may be represented using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

The names used for parameters and the like in this disclosure are not limiting in any respect. Furthermore, the formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any respect.

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

In addition, information, signals, etc. may be output from a higher layer to a lower layer and/or from a lower layer to a higher layer. Information, signals, etc. may be input/output via multiple network nodes.

Input/output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. Input/output information, signals, etc. may be overwritten, updated, or added to. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

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

The physical layer signaling may be called Layer 1/Layer 2 (L1/L2) control information (L1/L2 control signal), L1 control information (L1 control signal), etc. The RRC signaling may be called an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc. The MAC signaling may be notified, for example, using a MAC Control Element (CE).

Furthermore, notification of specified information (e.g., notification that "X is the case") is not limited to explicit notification, but may be implicit (e.g., by not notifying the specified information or by notifying other information).

The determination may be based on a value represented by a single bit (0 or 1), a Boolean value represented by true or false, or a comparison of numerical values (e.g., with a predetermined value).

Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

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

As used in this disclosure, the terms "system" and "network" may be used interchangeably. "Network" may refer to the devices included in the network (e.g., base stations).

In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," and the like may be used interchangeably.

In this disclosure, terms such as "Base Station (BS)", "Radio base station", "Fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "Access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission/Reception Point (TRP)", "Panel", "Cell", "Sector", "Cell group", "Carrier", "Component carrier", etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

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

In this disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control/operate based on the information.

In this disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" may be used interchangeably.

A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

The moving body in question refers to an object that can move, and the moving speed is arbitrary, and of course includes the case where the moving body is stationary. The moving body in question includes, but is not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, artificial satellites, drones, multicopters, quadcopters, balloons, and objects mounted on these. The moving body in question may also be a moving body that moves autonomously based on an operating command.

The moving object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

FIG. 14 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

The drive unit 41 is composed of at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handlebar), and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (e.g., an Input/Output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

Signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the motor current, a rotation speed signal of the front wheels 46/rear wheels 47 acquired by a rotation speed sensor 51, an air pressure signal of the front wheels 46/rear wheels 47 acquired by an air pressure sensor 52, a vehicle speed signal acquired by a vehicle speed sensor 53, an acceleration signal acquired by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 acquired by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 acquired by a brake pedal sensor 56, an operation signal of the shift lever 45 acquired by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 58.

The information service unit 59 is composed of various devices, such as a car navigation system, audio system, speakers, displays, televisions, and radios, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The information service unit 59 uses information acquired from external devices via the communication module 60, etc., to provide various information/services (e.g., multimedia information/multimedia services) to the occupants of the vehicle 40.

The information service unit 59 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that perform output to the outside.

The driving assistance system unit 64 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving load, such as a millimeter wave radar, a Light Detection and Ranging (LiDAR), a camera, a positioning locator (e.g., a Global Navigation Satellite System (GNSS)), map information (e.g., a High Definition (HD) map, an Autonomous Vehicle (AV) map, etc.), a gyro system (e.g., an Inertial Measurement Unit (IMU), an Inertial Navigation System (INS), etc.), an Artificial Intelligence (AI) chip, and an AI processor, and one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize a driving assistance function or an autonomous driving function.

The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 between the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58 that are provided on the vehicle 40.

The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the above-mentioned base station 10, user terminal 20, etc. Furthermore, the communication module 60 may be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (it may function as at least one of the base station 10 and user terminal 20).

The communication module 60 may transmit at least one of the signals from the various sensors 50-58 described above input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above input.

The communication module 60 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 60).

The communication module 60 also stores various information received from external devices in memory 62 that can be used by the microprocessor 61. Based on the information stored in memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided on the vehicle 40.

Furthermore, the base station in the present disclosure may be read as a user terminal. For example, each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, the uplink channel, downlink channel, etc. may be read as the sidelink channel.

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

In this disclosure, operations that are described as being performed by a base station may in some cases be performed by its upper node. In a network that includes one or more network nodes having base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) or a Serving-Gateway (S-GW)), or a combination of these.

Each aspect/embodiment described in this disclosure may be used alone, in combination, or switched between depending on the implementation. In addition, the processing procedures, sequences, flow charts, etc. of each aspect/embodiment described in this disclosure may be rearranged as long as there is no inconsistency. For example, the methods described in this disclosure present elements of various steps using an exemplary order, and are not limited to the particular order presented.

Each aspect/embodiment described in this disclosure includes Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal)), Future Radio Access (FRA), New-Radio The present invention may be applied to systems that use Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-Wide Band (UWB), Bluetooth (registered trademark), and other appropriate wireless communication methods, as well as next-generation systems that are expanded, modified, created, or defined based on these. In addition, multiple systems may be combined (for example, a combination of LTE or LTE-A and 5G, etc.).

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

Any reference to an element using a designation such as "first," "second," etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.

The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking in a table, database, or other data structure), ascertaining, etc.

"Determining" may also be considered to mean "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), etc.

"Judgment" may also be considered to mean "deciding" to resolve, select, choose, establish, compare, etc. In other words, "judgment" may also be considered to mean "deciding" to take some kind of action.

In addition, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," etc.

The "maximum transmit power" referred to in this disclosure may mean the maximum value of transmit power, may mean the nominal UE maximum transmit power, or may mean the rated UE maximum transmit power.

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

In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, and the like, as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, and the like, as some non-limiting and non-exhaustive examples.

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

When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Additionally, the term "or," as used in this disclosure, is not intended to be an exclusive or.

In this disclosure, where articles have been added through translation, such as a, an, and the in English, this disclosure may include that the nouns following these articles are plural.

In this disclosure, terms such as "less than", "less than", "greater than", "more than", "equal to", etc. may be read as interchangeable. In addition, in this disclosure, terms meaning "good", "bad", "big", "small", "high", "low", "fast", "slow", "wide", "narrow", etc. may be read as interchangeable, not limited to positive, comparative and superlative. In addition, in this disclosure, terms meaning "good", "bad", "big", "small", "high", "low", "fast", "slow", "wide", "narrow", etc. may be read as interchangeable, not limited to positive, comparative and superlative, as expressions with "ith" (i is any integer) (for example, "best" may be read as "ith best").

In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

　The invention disclosed herein has been described in detail above, but it is clear to those skilled in the art that the invention disclosed herein is not limited to the embodiments described herein. The invention disclosed herein can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the claims. Therefore, the description of the disclosure is intended as an illustrative example and does not impose any limiting meaning on the invention disclosed herein.

This application is based on Japanese Patent Application No. 2022-165013 filed on October 13, 2022, the contents of which are incorporated herein in their entirety.

Claims

A receiving unit that receives at least one of first information instructing DL reception and second information instructing UL transmission in a time domain to which subband non-overlapping full duplex transmission is applied;
A terminal having a control unit that, when instructions for DL reception and UL transmission are supported for the same time domain to which the subband non-overlapping full duplex signaling is applied, controls to select and perform one of the DL reception and the UL transmission based on at least one of the transmission conditions of the first information and the second information, the conditions applied to the DL reception and the UL transmission, and pre-set conditions.
The terminal according to claim 1, wherein, when the first information and the second information are downlink control information, the control unit controls to select and perform one of the DL reception and the UL transmission based on the transmission timing of the first downlink control information corresponding to the first information and the downlink control information corresponding to the second information.
The terminal according to claim 1, wherein when at least one of the first information and the second information is an upper layer parameter, the control unit controls to select and perform one of the DL reception and the UL transmission based on the transmission type of the DL reception and the UL transmission.
The terminal according to claim 1, wherein when repetition is applied to at least one of the DL reception and the UL transmission, the control unit controls to select and perform one of the DL reception and the UL transmission based on the repetition conditions.
receiving at least one of first information instructing DL reception and second information instructing UL transmission in a time domain in which subband non-overlapping full duplex transmission is applied;
A wireless communication method for a terminal comprising: when instructions for DL reception and UL transmission are supported for the same time domain to which the subband non-overlapping full duplex signaling is applied, a control step of selecting and performing one of the DL reception and the UL transmission based on at least one of the transmission conditions of the first information and the second information, the conditions applied to the DL reception and the UL transmission, and predetermined conditions.
A transmitter that transmits at least one of first information instructing DL reception and second information instructing UL transmission to a terminal in a time domain to which subband non-overlapping full duplex transmission is applied;
A base station having a control unit that, when the DL reception and the UL transmission instructions are supported for the same time domain to which the subband non-overlapping full duplex signaling is applied, instructs the terminal to select one of the DL reception and the UL transmission using at least one of the transmission conditions of the first information and the second information, the conditions applied to the DL reception and the UL transmission, and pre-set conditions.