Operation method of device in wireless communication system, and device using same method

Abstract

Provided are an operation method of a device in a wireless communication system, and a device using the method. The method comprises the steps of: determining the number (K) of PUSCH repetitive transmissions; repeatedly transmitting a PUSCH K times, wherein K is determined on the basis of at least one of a ratio (RFD) of resources operating in full duplex (FD) among resources allocated for the PUSCH transmission and a ratio (RHD) of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission.

Description

Method of operating a device in a wireless communication system and a device using the method

[0001] The present disclosure relates to a method of operating a device in a wireless communication system and a device using the method.

[0002] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communications over existing radio access technology (RAT) is emerging. Furthermore, massive Machine Type Communications (MTC), which connects numerous devices and objects to provide diverse services anytime, anywhere, is also a key issue to be considered in next-generation communications. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. The introduction of next-generation radio access technologies that take enhanced mobile broadband communications, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) into account is being discussed. For convenience, these technologies are referred to herein as new RAT or NR.

[0003] Wireless communication systems, whether NR or later, can perform full duplex (FD) operation. FD operation allows a device to simultaneously receive and transmit within a specific time resource. This differs from half duplex (HD) operation, which allows only one of the two modes, reception and transmission, to be performed within a specific time resource.

[0004] For FD operation, i) some frequency resources in the same time resource may be allocated as downlink subbands and other frequency resources as uplink subbands (this may be referred to as subband FD, or subband-wise full duplex (SBFD), or ii) frequency resources that can be used for both downlink reception and uplink transmission in the same time resource may be allocated (this may be referred to as spectrum shared FD, or spectrum-sharing full duplex (SSFD).

[0005] Meanwhile, data channels, such as physical uplink shared channel (PUSCH) and physical downlink shared channel (PDSCH), can be transmitted repeatedly. When transmitting a PUSCH, the terminal can transmit the PUSCH repeatedly K times according to the network's instructions. Alternatively, when receiving a PDSCH transmitted by a base station, the terminal can determine that the PDSCH is transmitted repeatedly using K consecutive slots according to the network's (base station's) instructions.

[0006] Previously, terminals did not support FD operation, so they only performed HD operation. However, as mentioned above, in future wireless communication systems, terminals may also support FD operation.

[0007] Then, assuming that the terminal operates on HD resources, the base station may instruct the terminal to specify the repetition count K value to apply for PUSCH repetitive transmission. However, in reality, the terminal may perform PUSCH transmission on FD resources. In such a case, the channel environment on FD resources may be worse than on HD resources, so the PUSCH transmitted using the instructed repetition count K value may not be transmitted successfully.

[0008] Alternatively, the base station may instruct the UE to perform PUSCH transmissions using the repetition count K, assuming that the UE operates on FD resources, but the UE may actually perform PUSCH transmissions on HD resources. In such cases, even though the channel conditions on HD resources are better than on FD resources, allowing data transmission using fewer resources, the UE may end up wasting resources by transmitting PUSCH using more resources than necessary.

[0009] When determining the number of repetitions in a repetitive transmission of a data channel, these issues need to be taken into consideration.

[0010] The technical problem to be solved by the present disclosure is to provide a method of operating a device in a wireless communication system and a device using the method.

[0011] A method of operating a device in a wireless communication system and a device using the method are provided. According to the method, a terminal determines the number of times (K) of PUSCH repetition transmission and transmits the PUSCH repeatedly K times, where K is the ratio (R) of resources operating in full duplex (FD) among resources allocated for the PUSCH transmission. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is characterized by being determined based on at least one of the following.

[0012] In another aspect, a terminal, device, or computer-readable recording medium for executing the above method is provided.

[0013] In another aspect, a method of operating a base station and a base station using the method are provided. According to the method of operating the base station, downlink control information is transmitted by the base station to a terminal, and the base station repeatedly receives a PUSCH (physical uplink shared channel) from the terminal K times. The K is a ratio (R) of resources operating in full duplex (FD) among resources allocated for the PUSCH transmission of the terminal. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is determined based on at least one of the following:

[0014] In a wireless communication system including a terminal supporting both FD and HD operations, the number of repeated transmissions of the data channel can be determined / set by considering the type of resources transmitting the data channel, i.e., the amount or ratio of FD resources and HD resources. Accordingly, repeated transmission of the data channel can be performed more efficiently.

[0015] In addition, when repeatedly transmitting data channels through different types of resources, the method for determining the number of repetitions can be made clear, thereby preventing ambiguity between the transmitting and receiving entities.

[0016] Figure 1 illustrates a wireless communication system to which the present disclosure can be applied.

[0017] Figure 2 is a block diagram showing a radio protocol architecture for a user plane.

[0018] Figure 3 is a block diagram showing the wireless protocol structure for the control plane.

[0019] Figure 4 illustrates the system architecture of a New Generation Radio Access Network (NG-RAN) to which NR is applied.

[0020] Figure 5 illustrates the functional division between NG-RAN and 5GC.

[0021] Figure 6 illustrates a frame structure that can be applied in NR.

[0022] Figure 7 illustrates the slot structure of an NR frame.

[0023] Figure 8 illustrates a core set.

[0024] Figure 9 illustrates an example of a frame structure for a new wireless access technology.

[0025] Figure 10 illustrates the structure of a self-contained slot.

[0026] Figure 11 illustrates physical channels and general signal transmission.

[0027] Figure 12 is an example of PUSCH repetition type A.

[0028] Figure 13 is an example of PUSCH repetition type B.

[0029] Figure 14 shows examples of how to apply full duplex within a carrier.

[0030] Figure 15 shows examples where time resources operating in HD (half duplex) and time resources operating in FD (full duplex), such as SBFD or SSFD, coexist.

[0031] Figure 16 shows examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0032] Figure 17 illustrates another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0033] Figure 18 shows examples in which PUSCH is transmitted across FD resources and HD resources.

[0034] Figure 19 shows other examples in which PUSCH is transmitted across FD resources and HD resources.

[0035] Figure 20 illustrates an operation method of a terminal in a wireless communication system.

[0036] Figure 21 illustrates the signaling process and operation between a base station and a terminal.

[0037] Figure 22 illustrates a wireless device applicable to the present specification.

[0038] Figure 23 illustrates an example of a signal processing module structure.

[0039] Figure 24 illustrates another example of the structure of a signal processing module within a transmission device.

[0040] FIG. 25 illustrates an example of a wireless communication device according to an implementation example of the present disclosure.

[0041] Figure 26 illustrates another example of a wireless device.

[0042] Fig. 27 illustrates a communication system (1) applicable to this specification.

[0043] In this specification, “A or B” can mean “only A,” “only B,” or “both A and B.” In other words, “A or B” in this specification can be interpreted as “A and / or B.” For example, “A, B or C” in this specification can mean “only A,” “only B,” “only C,” or “any combination of A, B, and C.”

[0044] As used herein, a slash ( / ) or a comma can mean "and / or." For example, "A / B" can mean "A and / or B." Accordingly, "A / B" can mean "only A," "only B," or "both A and B." For example, "A, B, C" can mean "A, B, or C."

[0045] In this specification, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” Additionally, in this specification, the expressions “at least one of A or B” or “at least one of A and / or B” may be interpreted identically to “at least one of A and B.”

[0046] Additionally, in this specification, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0047] Additionally, parentheses used herein may mean “for example.” Specifically, when indicated as “control information (PDCCH),” “PDCCH” may be proposed as an example of “control information.” In other words, “control information” in this specification is not limited to “PDCCH,” and “PDCCH” may be proposed as an example of “control information.” Furthermore, even when indicated as “control information (i.e., PDCCH),” “PDCCH” may be proposed as an example of “control information.”

[0048] Technical features individually described in a single drawing in this specification may be implemented individually or simultaneously.

[0049] The following drawings are intended to illustrate specific examples of the present specification. The names of specific devices and the names of specific signals, messages, and fields depicted in the drawings are provided for illustrative purposes only, and the technical features of this specification are not limited to the specific names used in the drawings.

[0050] Figure 1 illustrates a wireless communication system to which the present disclosure may be applied. This may also be referred to as an Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN) or a Long Term Evolution (LTE) / LTE-A system.

[0051] E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a user equipment (UE) 10. The UE 10 may be fixed or mobile, and may be referred to by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, or a terminal. The base station (20) refers to a fixed station that communicates with the UE 10, and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), or an access point.

[0052] Base stations (20) can be connected to each other via the X2 interface. The base station (20) is connected to an EPC (Evolved Packet Core, 30) via the S1 interface, more specifically, to an MME (Mobility Management Entity) via the S1-MME, and to an S-GW (Serving Gateway) via the S1-U.

[0053] The EPC (30) consists of an MME, an S-GW, and a P-GW (Packet Data Network-Gateway). The MME holds information about terminal access and capabilities, and this information is primarily used for terminal mobility management. The S-GW is a gateway with the E-UTRAN as its endpoint, and the P-GW is a gateway with the PDN as its endpoint.

[0054] The layers of the radio interface protocol between the terminal and the network can be divided into L1 (layer 1), L2 (layer 2), and L3 (layer 3) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Among these, the physical layer belonging to layer 1 provides information transfer service using physical channels, and the RRC (Radio Resource Control) layer located in layer 3 controls radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0055] Figure 2 is a block diagram illustrating the radio protocol architecture for the user plane. Figure 3 is a block diagram illustrating the radio protocol architecture for the control plane. The user plane is a protocol stack for transmitting user data, and the control plane is a protocol stack for transmitting control signals.

[0056] Referring to Figures 2 and 3, the physical layer (PHY layer) provides information transfer services to upper layers using physical channels. The PHY layer is connected to its upper layer, the Medium Access Control (MAC) layer, through a transport channel. Data is transferred between the MAC layer and the PHY layer via the transport channel. Transport channels are classified based on how and with what characteristics data is transmitted over the wireless interface.

[0057] Data travels between different physical layers, i.e., between the physical layers of a transmitter and receiver, via a physical channel. This physical channel can be modulated using Orthogonal Frequency Division Multiplexing (OFDM) and utilizes time and frequency as radio resources.

[0058] The MAC layer's functions include mapping between logical channels and transport channels, and multiplexing / demultiplexing MAC service data units (SDUs) belonging to logical channels into transport blocks provided as physical channels on the transport channels. The MAC layer provides services to the RLC (Radio Link Control) layer through logical channels.

[0059] The functions of the RLC layer include concatenation, segmentation, and reassembly of RLC SDUs. To guarantee the various Quality of Service (QoS) required by radio bearers (RBs), the RLC layer provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0060] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical, transport, and physical channels, including the configuration, reconfiguration, and release of radio bearers. An RB is a logical path provided by Layer 1 (PHY layer) and Layer 2 (MAC layer, RLC layer, PDCP layer) for data transmission between a terminal and the network.

[0061] The functions of the Packet Data Convergence Protocol (PDCP) layer in the user plane include the transmission of user data, header compression, and ciphering. The functions of the Packet Data Convergence Protocol (PDCP) layer in the control plane include the transmission of control plane data and encryption / integrity protection.

[0062] Establishing an RB refers to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. RBs can be further divided into two types: signaling RBs (SRBs) and data RBs (DRBs). SRBs are used as a conduit for transmitting RRC messages in the control plane, while DRBs are used as conduits for transmitting user data in the user plane.

[0063] When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the E-UTRAN, the terminal is in an RRC connected state, otherwise it is in an RRC idle state.

[0064] Downlink transmission channels that transmit data from the network to the terminal include the Broadcast Channel (BCH), which transmits system information, and the downlink Shared Channel (SCH), which transmits user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be transmitted through the downlink SCH or a separate downlink Multicast Channel (MCH). Meanwhile, uplink transmission channels that transmit data from the terminal to the network include the Random Access Channel (RACH), which transmits initial control messages, and the uplink Shared Channel (SCH), which transmits user traffic or control messages.

[0065] Logical channels that are located above the transport channel and are mapped to the transport channel include BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), and MTCH (Multicast Traffic Channel).

[0066] A physical channel consists of multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A single subframe consists of multiple OFDM symbols in the time domain. A resource block is a resource allocation unit and consists of multiple OFDM symbols and multiple subcarriers. Additionally, each subframe can use specific subcarriers of specific OFDM symbols (e.g., the first OFDM symbol) of the subframe for the Physical Downlink Control Channel (PDCCH), i.e., the L1 / L2 control channel. A Transmission Time Interval (TTI) is a unit time for subframe transmission.

[0067] Below, we describe new radio access technology (new RAT, NR).

[0068] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communications over existing radio access technology (RAT) is emerging. Furthermore, massive Machine Type Communications (MTC), which connects numerous devices and objects to provide diverse services anytime, anywhere, is also a key issue to be considered in next-generation communications. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. The introduction of next-generation radio access technologies that take enhanced mobile broadband communications, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) into account is being discussed. For convenience, these technologies are referred to herein as new RAT or NR.

[0069] Figure 4 illustrates the system architecture of a New Generation Radio Access Network (NG-RAN) to which NR is applied.

[0070] Referring to FIG. 4, the NG-RAN may include gNBs and / or eNBs that provide user plane and control plane protocol termination to the UE. FIG. 4 exemplifies a case including only gNBs. The gNBs (eNBs) are connected to each other via Xn interfaces. The gNBs and eNBs are connected to the 5th generation core network (5G Core Network: 5GC) via the NG interface. More specifically, they are connected to the access and mobility management function (AMF) via the NG-C interface, and to the user plane function (UPF) via the NG-U interface.

[0071] Figure 5 illustrates the functional division between NG-RAN and 5GC.

[0072] Referring to FIG. 5, the gNB can provide functions such as inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control (Connection Mobility Control), radio admission control (Radio Admission Control), measurement configuration and provision, and dynamic resource allocation. The AMF can provide functions such as NAS security and idle state mobility processing. The UPF can provide functions such as mobility anchoring and PDU processing. The SMF (Session Management Function) can provide functions such as terminal IP address allocation and PDU session control.

[0073] Figure 6 illustrates a frame structure that can be applied in NR.

[0074] Referring to FIG. 6, a radio frame (hereinafter abbreviated as a frame) can be used for uplink and downlink transmission in NR. A frame has a length of 10 ms and can be defined as two 5 ms half-frames (Half-Frames, HF). A half-frame can be defined as five 1 ms sub-frames (Subframes, SF). A sub-frame can be divided into one or more slots, and the number of slots in a sub-frame depends on the Subcarrier Spacing (SCS). Each slot contains 12 or 14 OFDM (A) symbols depending on the CP (cyclic prefix). When a normal CP is used, each slot contains 14 symbols. When an extended CP is used, each slot contains 12 symbols. Here, the symbols can include an OFDM symbol (or a CP-OFDM symbol), an SC-FDMA symbol (or a DFT-s-OFDM symbol).

[0075] Table 1 below illustrates the subcarrier spacing configuration μ (also referred to as subcarrier spacing configuration).

[0076] [Table 1]

[0077]

[0078] Table 2 below shows the number of slots (N) in a frame according to the subcarrier spacing setting μ. frame,μ slot ), number of slots in a subframe (N subframe,μ slot ), number of symbols in the slot (N slot symb ) are examples.

[0079] [Table 2]

[0080]

[0081] In Fig. 6, examples are given for μ=0, 1, 2, and 3.

[0082] Table 2-1 below illustrates that when extended CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe change depending on the SCS.

[0083] [Table 2-1]

[0084]

[0085] In an NR system, OFDM(A) numerologies (e.g., SCS, CP length, etc.) may be set differently between multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., SF, slot, or TTI) (conveniently referred to as TU (Time Unit)) consisting of the same number of symbols may be set differently between the merged cells.

[0086] Figure 7 illustrates a slot structure.

[0087] A slot can contain multiple symbols in the time domain. For example, in the case of a normal CP, one slot can contain 14 symbols (or 7 symbols), but in the case of an extended CP, one slot can contain 12 symbols (or 6 symbols). A carrier can contain multiple subcarriers in the frequency domain. A Resource Block (RB) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) can be defined as multiple consecutive (P)RBs in the frequency domain, and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier can contain up to N BWPs (e.g., 45 or 5). Data communication is performed through activated BWPs, and only one BWP can be activated for a single terminal. In the resource grid, each element is referred to as a Resource Element (RE), to which one complex symbol can be mapped.

[0088] A PDCCH (physical downlink control channel) may be composed of one or more CCEs (control channel elements) as shown in Table 3 below.

[0089] [Table 3]

[0090]

[0091] That is, the PDCCH can be transmitted through a resource consisting of 1, 2, 4, 8, or 16 CCEs. Here, the CCEs are composed of 6 REGs (resource element groups), and one REG consists of one resource block in the frequency domain and one OFDM (orthogonal frequency division multiplexing) symbol in the time domain.

[0092] Monitoring refers to decoding each PDCCH candidate according to the DCI (downlink control information) format. The terminal monitors a set of PDCCH candidates in one or more core sets (CORESETs, described below) on the active DL BWP of each activated serving cell for which PDCCH monitoring is configured, according to the corresponding search space set.

[0093] In NR, a new unit called a control resource set (CORESET) can be introduced. A terminal can receive PDCCHs in a CORESET.

[0094] Figure 8 illustrates a core set.

[0095] Referring to Figure 8, the coreset is N in the frequency domain. CORESET RB It consists of N resource blocks and is in the time domain. CORESET symb ∈ {1, 2, 3} symbols. N CORESET RB, N CORESET symb can be provided by the base station via upper layer signals. As illustrated in Fig. 8, a core set may include multiple CCEs (or REGs).

[0096] A terminal may attempt PDCCH detection in units of 1, 2, 4, 8, or 16 CCEs within a core set. One or more CCEs for which PDCCH detection can be attempted may be referred to as PDCCH candidates.

[0097] A terminal can be configured with multiple core sets.

[0098] In conventional wireless communication systems (e.g., LTE / LTE-A), the control domain spans the entire system bandwidth used by the base station. Except for some terminals that support only narrow bandwidths (e.g., eMTC / NB-IoT terminals), all terminals must be able to receive radio signals across the entire system bandwidth of the base station to properly receive / decode the control information transmitted by the base station.

[0099] In contrast, NR introduces the aforementioned core set. A core set is a radio resource for control information that a terminal must receive. It can utilize only a portion of the system bandwidth in the frequency domain, rather than the entire bandwidth. Furthermore, it can utilize only a portion of the symbols within a slot in the time domain. The base station can assign a core set to each terminal and transmit control information through the assigned core set. In NR, a terminal can receive control information from the base station without necessarily receiving the entire system bandwidth.

[0100] The core set may include a terminal-specific core set for transmitting terminal-specific control information and a common core set for transmitting control information common to all terminals.

[0101] Meanwhile, in NR, depending on the application field, high reliability may be required, and in such a situation, the target block error rate (BLER) for downlink control information (DCI) transmitted through a downlink control channel (e.g., physical downlink control channel: PDCCH) may be significantly lower than in the prior art. One example of a method for satisfying such a requirement requiring high reliability is to reduce the amount of content included in the DCI and / or increase the amount of resources used when transmitting the DCI. In this case, the resources may include at least one of time domain resources, frequency domain resources, code domain resources, and spatial domain resources.

[0102] The following technologies / features can be applied in NR:

[0103] Self-contained subframe structure

[0104] Figure 9 illustrates an example of a frame structure for a new wireless access technology.

[0105] In NR, for the purpose of minimizing latency, a structure in which a control channel and a data channel are time-division multiplexed (TDM) within one TTI, as shown in Fig. 9, can be considered as one of the frame structures.

[0106] Figure 9 shows an example in which a downlink control region is located at the front of the TTI and an uplink control region is located at the back of the TTI. The region between the downlink control region and the uplink control region can be used for downlink data (DL data) transmission or uplink data (UL data) transmission. A characteristic of this structure is that downlink (DL) reception and uplink (UL) transmission are sequentially performed within a single subframe / slot, so that DL data can be received and UL ACK / NACK (Acknowledgement / Not-acknowledgement) can be transmitted within a single subframe / slot. As a result, the time required for data retransmission when a data transmission error occurs is reduced, thereby minimizing the latency of the final data transmission.

[0107] In this way, in a data and control TDMed subframe structure, a time gap is required for the base station and terminal to transition from transmission mode to reception mode or from reception mode to transmission mode. To this end, some OFDM symbols at the point of transition from DL to UL in a self-contained subframe structure can be set as a guard period (GP).

[0108] Figure 10 illustrates the structure of a self-contained slot.

[0109] In an NR system, a single slot may contain a DL control channel, DL or UL data, and a UL control channel. For example, the first N symbols in a slot may be used to transmit a DL control channel (hereinafter, referred to as a DL control region), and the last M symbols in the slot may be used to transmit a UL control channel (hereinafter, referred to as a UL control region). N and M are each integers greater than or equal to 0. A resource region (hereinafter, referred to as a data region) between the DL control region and the UL control region may be used for DL ​​data transmission or UL data transmission. As an example, the following configuration may be considered. Each section is listed in chronological order.

[0110] 1. DL only configuration

[0111] 2. UL only configuration

[0112] 3. Mixed UL-DL configuration

[0113] - DL area + GP (Guard Period) + UL control area

[0114] - DL control area + GP + UL area

[0115] DL area: (i) DL data area, (ii) DL control area + DL data area

[0116] UL domain: (i) UL data domain, (ii) UL data domain + UL control domain

[0117] In the DL control region, a PDCCH can be transmitted, and in the DL data region, a PDSCH (physical downlink shared channel) can be transmitted. In the UL control region, a PUCCH (physical uplink control channel) can be transmitted, and in the UL data region, a PUSCH (physical uplink shared channel) can be transmitted. In the PDCCH, downlink control information (DCI), such as DL data scheduling information and UL data scheduling information, can be transmitted. In the PUCCH, uplink control information (UCI), such as ACK / NACK (Positive Acknowledgement / Negative Acknowledgement) information for DL ​​data, CSI (Channel State Information) information, and SR (Scheduling Request), can be transmitted. GP provides a time gap when a base station and a terminal switch from transmission mode to reception mode or from reception mode to transmission mode. Some symbols at the time of switching from DL to UL within a subframe can be set as GP.

[0118] Analog Beamforming #1

[0119] In millimeter wave (mmW), the wavelength is shortened, allowing for the installation of multiple antenna elements in the same area. That is, in the 30 GHz band, the wavelength is 1 cm, allowing for a total of 100 antenna elements to be installed in a two-dimensional array at 0.5 wavelength (lambda) intervals on a 5 x 5 cm panel. Therefore, in mmW, multiple antenna elements are used to increase beamforming (BF) gain, thereby increasing coverage or throughput.

[0120] In this case, if there is a transceiver unit (TXRU) that allows transmission power and phase control for each antenna element, independent beamforming is possible for each frequency resource. However, it is not practical in terms of cost to install a TXRU for all 100 or so antenna elements. Therefore, a method of mapping multiple antenna elements to a single TXRU and controlling the direction of the beam with an analog phase shifter is being considered. This analog beamforming method has the disadvantage of being unable to perform frequency-selective beamforming because it can only create one beam direction for the entire band.

[0121] Hybrid beamforming (hybrid BF), which has B TXRUs, which is less than Q antenna elements, can be considered as an intermediate form between digital beamforming (Digital BF) and analog beamforming (Analog BF). In this case, depending on the connection method of the B TXRUs and Q antenna elements, the number of beam directions that can be transmitted simultaneously is limited to B or fewer.

[0122] Analog Beamforming #2

[0123] In NR systems, when multiple antennas are used, a hybrid beamforming technique that combines digital beamforming and analog beamforming is emerging. In this case, analog beamforming (or RF beamforming) performs precoding (or combining) at the RF end, which has the advantage of achieving performance close to digital beamforming while reducing the number of RF chains and D / A (or A / D) converters. For convenience, the hybrid beamforming structure can be expressed as N TXRUs and M physical antennas. Then, the digital beamforming for L data layers to be transmitted from the transmitter can be expressed as an N by L matrix, and the N converted digital signals are converted into analog signals through the TXRU, and then analog beamforming expressed as an M by N matrix is ​​applied.

[0124] System information of an NR system can be transmitted in a broadcasting manner. At this time, analog beams belonging to different antenna panels within one symbol can be transmitted simultaneously, and a method of introducing a beam reference signal (BRS), which is a reference signal (RS) transmitted by applying a single analog beam (corresponding to a specific antenna panel) to measure a channel for each analog beam, is being discussed. The BRS can be defined for multiple antenna ports, and each antenna port of the BRS can correspond to a single analog beam. At this time, unlike the BRS, a synchronization signal or xPBCH can be transmitted by applying all analog beams within an analog beam group so that any terminal can receive it well.

[0125] In NR, a synchronization signal block (SSB, or may be referred to as a synchronization signal and physical broadcast channel (SS / PBCH) in the time domain) may be composed of four OFDM symbols numbered in ascending order from 0 to 3 within the synchronization signal block, and a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a PBCH associated with a demodulation reference signal (DMRS) may be mapped to the symbols. As described above, the synchronization signal block may also be referred to as an SS / PBCH block.

[0126] In NR, multiple synchronization signal blocks can be transmitted at different times, and SSB can be used to perform initial access (IA), serving cell measurement, etc. Therefore, when the transmission timing and resources overlap with other signals, it is desirable to transmit SSB preferentially. To achieve this, the network can broadcast SSB transmission timing and resource information or indicate it through UE-specific RRC signaling.

[0127] NR can perform beam-based transmission and reception operations. If the reception performance of the current serving beam degrades, a process called beam failure recovery (BFR) can be used to find a new beam.

[0128] Since BFR is not a process for declaring an error / failure in the link between the network and the terminal, it can be assumed that the connection with the current serving cell is maintained even when the BFR process is performed. During the BFR process, measurements are performed on different beams set by the network (a beam can be expressed as a CSI-RS port or an SSB (synchronization signal block) index, etc.) and the best beam for the terminal is selected. The terminal can proceed with the BFR process by performing the RACH process associated with the beam with the best measurement result.

[0129] Now, we will describe the Transmission Configuration Indicator (TCI) state. The TCI state can be set for each core set of the control channel, and parameters for determining the terminal's receive (Rx) beam can be determined based on the TCI state.

[0130] For each downlink bandwidth portion (DL BWP) of a serving cell, a terminal may be configured with up to three core sets. Additionally, for each core set, the terminal may be provided with the following information:

[0131] 1) Coreset index p (e.g., one from 0 to 11, where the index of each coreset can be uniquely determined among the BWPs of a serving cell),

[0132] 2) PDCCH DM-RS scrambling sequence initialization value,

[0133] 3) Interval in the time domain of the core set (can be given in symbol units),

[0134] 4) A set of resource blocks,

[0135] 5) CCE-to-REG mapping parameters,

[0136] 6) Antenna port quasi co-location (QCL) information indicating quasi co-location (QCL) information of DM-RS antenna ports for PDCCH reception in each core set (from a set of antenna port quasi co-locations provided by a higher layer parameter called 'TCI-State');

[0137] 7) Indicating the presence or absence of a transmission configuration indication (TCI) field for a specific DCI format transmitted by PDCCH in the core set, etc.

[0138] Let's explain QCL. If the characteristics of the channel through which a symbol on one antenna port is transmitted can be inferred from the characteristics of the channel through which a symbol on another antenna port is transmitted, then the two antenna ports are said to be in quasi-co-location (QCL). For example, if two signals (A and B) are transmitted from the same transmit antenna array with identical / similar spatial filters applied, the two signals may experience identical / similar channel conditions. From the receiver's perspective, if one of the two signals is received, the channel characteristics of the received signal can be used to detect the other signal.

[0139] In this sense, the fact that A and B are QCL may mean that A and B experienced similar channel conditions, and thus, the channel information estimated to detect A is also useful for detecting B. Here, the channel conditions may be defined by, for example, Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters, etc.

[0140] The 'TCI-State' parameter associates one or two downlink reference signals with a corresponding QCL type (there are QCL types A, B, C, and D, see Table 4).

[0141] [Table 4]

[0142]

[0143] Each 'TCI-State' may include parameters for establishing a quasi-colocation (QCL) relationship between one or two downlink reference signals and a DM-RS port of a PDSCH (or PDCCH), or a CSI-RS port of a CSI-RS resource.

[0144] Meanwhile, in each DL BWP configured for a terminal in a serving cell, the terminal may be provided with up to 10 search space sets. For each search space set, the terminal may be provided with at least one of the following pieces of information:

[0145] 1) Search space set index s (0≤s<40), 2) Association between core set P and search space set s, 3) PDCCH monitoring period and PDCCH monitoring offset (slot unit), 4) PDCCH monitoring pattern within a slot (e.g., indicating the first symbol of the core set within a slot for PDCCH monitoring), 5) Number of slots in which search space set s exists, 6) Number of PDCCH candidates per CCE aggregation level, 7) Information indicating whether search space set s is CSS (common search space) or USS (UE-specific search space), etc.

[0146] In NR, core set #0 can be configured by PBCH (or terminal-specific signaling for handover, PSCell configuration, or BWP configuration). The search space (SS) set #0 configured by PBCH can have different monitoring offsets (e.g., slot offset, symbol offset) for each associated SSB. This may be necessary to minimize the search space occasions that the terminal must monitor. Alternatively, it may also be necessary to provide a beam sweeping control / data area that can transmit control / data for each beam so that communication with the terminal can be continuously performed in a situation where the best beam of the terminal dynamically changes.

[0147] Figure 11 illustrates physical channels and general signal transmission.

[0148] Referring to Figure 11, in a wireless communication system, a terminal receives information from a base station via the downlink (DL), and the terminal transmits information to the base station via the uplink (UL). The information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type and purpose of the information they transmit and receive.

[0149] When a terminal is powered on again from a powered-off state or newly enters a cell, it performs an initial cell search operation, such as synchronizing with the base station (S11). To this end, the terminal receives the PSCH (Primary Synchronization Channel) and SSCH (Secondary Synchronization Channel) from the base station to synchronize with the base station and obtain information such as the cell ID (cell identity). In addition, the terminal can obtain broadcast information within the cell by receiving the PBCH (Physical Broadcast Channel) from the base station. In addition, the terminal can receive the DL RS (Downlink Reference Signal) during the initial cell search phase to check the downlink channel status.

[0150] (Initial) cell search can be defined as a procedure in which a terminal acquires time and frequency synchronization with a cell and detects the cell ID of the cell. Cell search can be based on the primary synchronization signal and secondary synchronization signal of the cell, and the PBCH DMRS.

[0151] A terminal that has completed initial cell search can obtain more specific system information by receiving a PDCCH (Physical Downlink Control Channel) and a corresponding PDSCH (Physical Downlink Control Channel) (S12).

[0152] Thereafter, the terminal can perform a random access procedure (Random Access Procedure) to complete connection to the base station (S13-S16). Specifically, the terminal can transmit a preamble through a Physical Random Access Channel (PRACH) (S13) and receive a Random Access Response (RAR) for the preamble through a PDCCH and a corresponding PDSCH (S14). Thereafter, the terminal can transmit a Physical Uplink Shared Channel (PUSCH) using scheduling information in the RAR (S15) and perform a contention resolution procedure (Contention Resolution Procedure) such as a PDCCH and a corresponding PDSCH (which can be considered a process of receiving a contention resolution message) (S16).

[0153] A terminal that has performed the above-described procedure can then perform PDCCH / PDSCH reception (S17) and PUSCH / PUCCH (Physical Uplink Control Channel) transmission (S18) as general uplink / downlink signal transmission procedures. Control information that the terminal transmits to the base station is referred to as UCI (Uplink Control Information). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), etc. CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), etc. UCI is generally transmitted through PUCCH, but can be transmitted through PUSCH when control information and data must be transmitted simultaneously. In addition, the terminal can aperiodically transmit UCI through PUSCH according to a request / instruction of the network.

[0154] To enable reasonable battery consumption when BA (bandwidth adaptation) is configured, only one uplink BWP and one downlink BWP, or only one downlink / uplink BWP pair, for each uplink carrier can be activated at a time within an active serving cell, while all other BWPs configured in the UE are deactivated. In deactivated BWPs, the UE does not monitor the PDCCH and does not transmit on the PUCCH, PRACH, and UL-SCH.

[0155] For BA, the receive and transmit bandwidth of the terminal need not be as wide as the cell bandwidth and can be adjusted: the width can be commanded to change (e.g., shrinking during periods of low activity to save power), the location in the frequency domain can be moved (e.g., to increase scheduling flexibility), and the subcarrier spacing can be commanded to change (e.g., to allow different services). A subset of the total cell bandwidth of a cell is referred to as a bandwidth part (BWP), and a BA is obtained by setting BWP(s) to the terminal and notifying the terminal which of the set BWPs is currently active. Once a BA is set, the terminal only needs to monitor the PDCCH on one active BWP. That is, there is no need to monitor the PDCCH on the entire downlink frequency of the cell. A BWP inactive timer (independent of the DRX inactive timer described above) is used to switch an active BWP to a default BWP: the timer is restarted upon successful PDCCH decoding, and a switch to the default BWP occurs when the timer expires.

[0156] Below, we describe the integrated access and backhaul link (IAB). For convenience, the proposed approach is based on the new RAT (NR) system. However, the scope of the proposed approach can be expanded to include other systems, such as 3GPP LTE / LTE-A systems, in addition to NR systems.

[0157] One potential technology that aims to enable future cellular network deployment scenarios and applications is support for wireless backhaul and relay links, enabling flexible and very dense deployment of NR cells without the need to proportionally densify the transport network.

[0158] The expected availability of greater bandwidth in NR compared to LTE (e.g., in the mmWave spectrum), along with the native deployment of massive MIMO or multi-beam systems, creates opportunities for the development and deployment of integrated access and backhaul links. This allows for easier deployment of dense networks of self-backhauled NR cells in a more integrated manner by establishing multiple control and data channels / procedures defined to provide connectivity or access to terminals. Such systems are referred to as integrated access and backhaul links (IAB).

[0159] In this disclosure, the following are defined:

[0160] - AC(x): Access link between node(x) and terminal(s).

[0161] - BH(xy): Backhaul link between node(x) and node(y).

[0162] At this time, the node may refer to a DgNB (donor gNB) or a relay node (RN). Here, the DgNB or donor node may be a gNB that provides a function to support backhaul for IAB nodes.

[0163] When relay node 1 and relay node 2 exist, and relay node 1 is connected to relay node 2 via a backhaul link and relays data transmitted and received to relay node 2, relay node 1 is called the parent node of relay node 2, and relay node 2 is called the child node of relay node 1.

[0164] <PUSCH 반복(repetitions)>

[0165] PUSCH repetition types A and B were introduced in the standard specifications (e.g., NR Rel-15 / 16). Transmission is performed as follows depending on the PUSCH repetition type.

[0166] 1) PUSCH repetition type A

[0167] Figure 12 is an example of PUSCH repetition type A.

[0168] Referring to FIG. 12, PUSCH repetition type A is a slot-based PUSCH repetition transmission, and repetition is performed with the same PUSCH transmission start symbol position and PUSCH transmission symbol length for each slot, as illustrated in FIG. 12. At this time, if an invalid symbol that cannot be used for PUSCH transmission exists among the symbol resources constituting a specific PUSCH repetition, the transmission of the corresponding PUSCH repetition is dropped and not performed. For example, when a total of four PUSCH repetition transmissions of Rep0, Rep1, Rep2, and Rep3 are performed in slots N, N+1, N+2, and N+3 (one PUSCH repetition is transmitted in each slot), if an invalid symbol is included in the symbol resources constituting Rep1, the transmission of Rep1 is dropped, and only the transmissions of Rep0, Rep2, and Rep3 are performed. Therefore, the actual number of repetitions performed may be less than the set number of repetitions.

[0169] For PUSCH repetition type A, frequency hopping can be configured for the UE by upper layer parameters. One of two frequency hopping modes can be configured.

[0170] i) Frequency hopping within a slot is applicable to single slot and multi-slot PUSCH transmission.

[0171] ii) Inter-slot frequency hopping is applicable to multi-slot PUSCH transmission.

[0172] 2) PUSCH repetition type B

[0173] Figure 13 is an example of PUSCH repetition type B.

[0174] Referring to Fig. 13, PUSCH repetition type B is repeated in units of the symbol length in which the actual PUSCH is transmitted. For example, as in (a) of Fig. 13, when the PUSCH is transmitted through 10 symbols, PUSCH repetition is performed in units of 10 consecutive symbols. At this time, the repetition that determines the PUSCH repetition transmission time resource without considering slot boundaries, invalid symbols, etc. is called nominal repetition. In Fig. 13 (a), three nominal repetitions (N0, N 1, An example is shown where N2 is set.

[0175] However, in the case of actual PUSCH repetition, a single PUSCH cannot be transmitted while including a slot boundary. That is, if a nominal PUSCH transmission includes a slot boundary (e.g., N0, N2 in (a) of FIG. 13), two actual repetitions are performed with the slot boundary as the boundary, as in (b) of FIG. 13. For example, a nominal repetition N0 is performed with two actual repetitions, such as A0, A1, with the slot boundary as the boundary.

[0176] Additionally, a single PUSCH transmission can only be performed using consecutive symbols. If an invalid symbol exists in the time resource where a PUSCH repetition should be transmitted, the actual repetition is formed using consecutive symbols with the invalid symbol as the boundary. For example, if symbols #0 to #9 constitute a nominal repetition and symbols #3 to #5 are invalid symbols, symbols #0 to #2 and symbols #6 to #9, excluding the invalid symbol, each constitute an actual repetition.

[0177] Invalid symbols may include the following:

[0178] i) Downlink symbol set by semi-static TDD UL-DL setting,

[0179] ii) an invalid symbol pattern set by RRC (which may be set by the invalid symbol pattern indicator);

[0180] iii) SSB symbol set by SIB1, SSB symbol set by 'ServngCellConfigCommon',

[0181] iv) Symbol for PDCCH for SIB1,

[0182] v) Invalid symbol for DL-UL switching set by RRC.

[0183] If a symbol that cannot be used for PUSCH transmission (e.g., a DL symbol indicated by DCI format 2_0) is included within one actual repetition resource, the corresponding actual repetition transmission is dropped and not performed.

[0184] Now, we describe full duplex operation.

[0185] 5G is giving rise to new service types, such as extended reality (XR), AI-based services, and self-driving cars. These services feature dynamic traffic in both downlink (DL) and uplink (UL) directions, and require low latency for traffic transmission (e.g., packets). 5G services will experience explosive growth in traffic to support these diverse new use cases.

[0186] Existing semi-static or dynamic TDD UL / DL configurations suffer from transmission delays and interference between operators. Existing FDD schemes also face limitations in efficient frequency resource utilization in the DL / UL directions. Therefore, the introduction of full-duplex operation within a single carrier is being discussed to achieve low latency and efficient resource utilization in NR.

[0187] Figure 14 shows examples of how to apply full duplex within a carrier.

[0188] Referring to FIG. 14, in the full duplex method, subband-wise full duplex (hereinafter, referred to as subband full duplex or SBFD) as in (a) of FIG. 14 and spectrum-sharing full duplex (hereinafter, referred to as SSFD) as in (b) of FIG. 14 can be considered.

[0189] In the case of SBFD, DL and UL transmission and reception are performed through different frequency resources within the same carrier (e.g., carrier #0). That is, different frequency resources are used for DL ​​and UL for the same time resource.

[0190] In SSFD, DL and UL transmission and reception are performed through the same frequency resources or overlapping frequency resources within the same carrier (e.g., carrier #0). That is, DL and UL can use the same or overlapping frequency resources for the same time resource.

[0191] This full-duplex (FD) operation can also be combined with existing half-duplex (HD) operation. For example, among the time resources used for existing half-duplex-based TDD operation, some of the time resources can be used for full-duplex operation. For example, SBFD or SSFD operation can be performed on the time resources performing full-duplex operation.

[0192] Figure 15 shows examples where time resources operating in HD (half duplex) and time resources operating in FD (full duplex), such as SBFD or SSFD, coexist.

[0193] In (a) of Fig. 15, some time resources operating in SBFD are indicated as SBFD, and time resources operating in half-duplex are indicated as HD. In (b) of Fig. 15, some time resources operating in SSFD are indicated as SSFD, and time resources operating in half-duplex are indicated as HD. The unit of the time resource may be, for example, a slot or a symbol.

[0194] In a time resource operating under SBFD, some frequency resources are used as DL resources, while others are used as UL resources. Between the DL and UL frequency resources, there may be a guard subband that is unused for both DL and UL and remains empty. The guard subband may also be referred to by other terms, such as guard frequency resources or guard subcarrier(s).

[0195] In a time resource operating in SSFD, the entire frequency resource can be used for both DL and UL. Alternatively, to reduce the impact of interference from other adjacent carriers (which may be referred to as adjacent carrier interference (ACI)), some frequency resources at one or both ends of the carrier can be left unused for DL ​​and / or UL. That is, one or both ends of the carrier can be used as guard bands (guard subbands) that are not used for both DL and UL. Alternatively, to reduce the impact of ACI on UL reception, one or both ends of the carrier can be used exclusively for DL ​​transmission.

[0196] In this disclosure, a slot resource operating in half-duplex is referred to as an HD slot, and a slot resource operating in SBFD and a slot resource operating in SSFD are referred to as an SBFD slot (SBFD slot) and an SSFD slot (SSFD slot), respectively. In addition, an SSFD slot and an SSFD slot are collectively referred to as an FD slot.

[0197] In the present disclosure, in a time resource operating as FD, a frequency resource operating as DL among the entire frequency resources is conveniently called a DL subband, and a frequency resource operating as UL may also be called a UL subband.

[0198] In full-duplex operation, both the base station and the terminal can perform full-duplex operation. That is, both the base station and the terminal can simultaneously transmit and receive DL and UL using the same or different frequency resources in the same time resource.

[0199] Alternatively, only the base station can perform full-duplex operation, while the terminals can perform half-duplex operation. The base station can simultaneously transmit and receive DL and UL signals using the same or different frequency resources in the same time resource, but the terminals perform only DL reception or UL transmission in specific time resources. In this case, the base station performs full-duplex operation by performing DL transmission and UL reception with different terminals at the same time.

[0200] The present disclosure assumes that the base station performs / supports full duplex operation, while the terminal performs / supports half duplex operation. However, the present disclosure can also be applied to cases where both the base station and the terminal perform / support full duplex operation.

[0201] <A. SBFD 및 SSFD 동작을 위한 DL / UL 시간 / 주파수 자원의 특성>

[0202] A cell (base station) can perform both DL transmission and UL reception in the same time resource in a FD manner, such as SBFD or SSFD. For example, the base station can perform HD operation in the first time resource and FD operation in the second time resource (which may be any time resource other than the first time resource).

[0203] Through this operation, the network can change the time resource for performing transmission and reception between the first time resource and the second time resource depending on the type of signal / channel being transmitted and received or the terminal performing the transmission and reception. For example, in the case of important signals / channels (e.g., SSB, PRACH) that require high transmission and reception performance with less influence from interference, the resources can be set to transmit and receive only on the first time resource that operates only in half duplex. This allows the transmission and reception performance of the corresponding signals / channels to be maintained while applying full duplex to the cell. Alternatively, in the case of a terminal that cannot properly transmit and receive due to the significant influence of cross link interference (CLI) when operating in full duplex on the second time resource, the transmission and reception performance for the terminal can be guaranteed by setting the resources to perform transmission and reception on the first time resource.

[0204] The terminal / base station performs DL or UL operations across the entire frequency resources that constitute the entire system bandwidth in the first time resource where the HD operation is performed. Within the first time resource where the HD operation is performed, the network performs DL operations through the 1-1 time resource and UL operations through the 1-2 time resource. At this time, the 1-1 time resource and the 1-2 time resource do not overlap with each other.

[0205] The terminal / base station performs FD operation in the second time resource, and the network performs DL operation through all or part of the frequency resources (first frequency resources) among the frequency resources constituting the system band of the cell, and performs UL operation through all or part of the frequency resources (second frequency resources).

[0206] Figure 16 shows examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0207] Referring to (a) of FIG. 16, in the first time resource (indicated by A), the device operates in half-duplex. In the second time resource (indicated by B), the device may operate in, for example, SBFD. The resource indicated by DL in the first time resource corresponds to the aforementioned 1-1 time resource, and the resource indicated by UL corresponds to the aforementioned 1-2 time resource.

[0208] Referring to (b) of Fig. 16, the frequency resource operating as DL in the second time resource corresponds to the first frequency resource described above, and the frequency resource operating as UL corresponds to the second frequency resource described above.

[0209] Figure 17 illustrates another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0210] Referring to (a) of FIG. 17, in the first time resource (indicated by A), the device operates in half-duplex. In the second time resource (indicated by B), for example, it may operate in SSFD. The resource indicated by DL in the first time resource corresponds to the aforementioned 1-1 time resource, and the resource indicated by UL corresponds to the aforementioned 1-2 time resource.

[0211] Referring to (b) of Fig. 17, the frequency resources operating as DL and DL+UL in the second time resource correspond to the first frequency resource described above, and the frequency resources operating as DL+UL correspond to the second frequency resource described above.

[0212] The first frequency resource and / or the second frequency resource may have all or some of the following characteristics:

[0213] 1) When performing SBFD operation, the first frequency resource and the second frequency resource do not overlap with each other. This is to ensure that DL and UL operations are performed through different frequency resources. At this time, there may be frequency resources that do not correspond to either the first or second frequency resources, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources may be necessary to reduce interference between DL transmission and UL reception. The guard frequency resource may be located between the first and second frequency resources.

[0214] 2) When performing SSFD operation, the first frequency resource and the second frequency resource may overlap. In this case, there may be frequency resources that do not correspond to either the first frequency resource or the second frequency resource, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources may be necessary to reduce interference between DL transmissions on adjacent carriers and / or between DL transmissions and UL reception on adjacent carriers.

[0215] 3) When performing the SBFD operation, the second frequency resource may be configured with continuous frequency resources, and the first frequency resource may be configured with non-contiguous frequency resources. In this case, the first frequency resource may be configured with multiple (for example, two) non-contiguous sets, and each set may be configured with continuous frequency resources. This is to reduce interference of DL transmission on adjacent carriers to UL resources by positioning the second frequency resource used for UL at the center of the frequency resources constituting the cell. Conversely, the first frequency resource may be configured with continuous frequency resources, and the second frequency resource may be configured with non-contiguous frequency resources. In this case, the second frequency resource may be configured with multiple (for example, two) non-contiguous sets, and each set may be configured with continuous frequency resources. This is to reduce interference of DL transmission on UL resources on adjacent carriers by positioning the second frequency resource used for DL ​​at the center of the frequency resources constituting the cell.

[0216] 4) When performing SSFD operation, the second frequency resource may be configured with a portion of the frequency resources of the first frequency resource. In this case, the second frequency resource may be configured with X PRBs (physical resource blocks) less than the first frequency resource for one or both edge portions of the carrier. This is to reduce interference between DL transmission on adjacent carriers and UL reception.

[0217] Through the above operation, the base station can perform a half-duplex operation in which only one of DL transmission or UL reception is performed in the entire frequency resources constituting the cell in the first time resource, and a full-duplex operation in which DL transmission is performed through the first frequency resource within the frequency resources constituting the cell and UL reception is simultaneously performed through the second frequency resource within the frequency resources constituting the cell in the second time resource.

[0218] The network can determine / judge the 'first time resource' and the 'second time resource', and the 'first frequency resource' and the 'second frequency resource' as described above, and provide all or part of the corresponding information to the terminal. The network can perform DL transmission to the terminal in the '1-1 time resource within the first time' and the '1 frequency resource within the second time resource', and perform UL reception from the terminal in the '1-2 time resource within the first time resource' and the '2 frequency resource within the second time resource'.

[0219] The terminal can receive all or part of the information about the 'first time resource' and the 'second time resource' and the 'first frequency resource' and the 'second frequency resource' from the network, and determine the location of the resources. The terminal can perform DL reception from the network through all or part of the '1-1 time resource within the first time' and the '1 frequency resource within the second time resource', and perform UL transmission to the network through the '1-2 time resource within the first time resource' and the '2 frequency resource within the second time resource'.

[0220] Meanwhile, in existing NR TDD carriers, the base station performs only downlink or uplink operations in a specific time resource. In this case, the base station always operates in downlink in the time resource where SSB is transmitted.

[0221] For terminals operating in existing TDD, the following is assumed for symbols in which SSB (SS / PBCH) is transmitted.

[0222] 1) SS / PBCH transmission symbols cannot be configured for uplink by TDD configuration (e.g., 'TDD-UL-DL-ConfigCommon' and / or 'TDD-UL-DL-ConfigDedicated').

[0223] 2) SS / PBCH transmission symbols cannot be set to uplink in SFI (slot format indication) by DCI format 2_0.

[0224] 3) When SS / PBCH is transmitted in a symbol set to flexible by TDD configuration (e.g., 'TDD-UL-DL-ConfigCommon' and / or 'TDD-UL-DL-ConfigDedicated'), if the uplink transmission of the terminal overlaps with the SS / PBCH symbol, the uplink transmission is not performed. In case of SRS, if it overlaps with the SS / PBCH symbol in the flexible symbol, SRS transmission is not performed in the overlapped symbol(s).

[0225] Meanwhile, in FDs such as SBFD and SSFD, both DL and UL resources can exist in the same time resource from the cell's perspective. Therefore, the base station can simultaneously perform downlink transmission and uplink reception. Therefore, even if SS / PBCH are transmitted in the time resource where the cell is performing FD operation, the base station can perform uplink reception while transmitting SS / PBCH.

[0226] Meanwhile, under the current standard, a terminal cannot perform uplink transmission on symbol resources where SS / PBCH is transmitted. In other words, a terminal cannot perform FD operations on the SS / PBCH transmission time resources of a base station.

[0227] When a specific time resource is configured as a time resource operating in SBFD (SBFD symbol), both DL and UL resources can exist in that time resource. In this case, if there is no UL signal to be received by the base station in that time resource, the base station can only perform DL transmission. In SBFD resources, DL transmission occurs only within the DL subband. Therefore, even if there is no UL signal transmitted in the UL subband, DL transmission can only be performed within the DL subband.

[0228] In this case, even if a specific time resource is determined to be an SBFD symbol, if there is no UL transmission to be received by the base station, it may be considered to perform DL transmission not only on the DL subband but also outside the DL subband to improve DL throughput. In other words, it may be considered to perform DL transmission over the entire bandwidth.

[0229] That is, a fallback to TDD operation that performs DL or UL operation over the entire band, rather than SBFD operation over DL / UL subbands, can be considered for resources judged as SBFD symbols.

[0230] In this disclosure, we assume and describe SBFD operation, where a cell performs DL and UL simultaneously using different frequency resources (e.g., subbands) within the same time resource. However, the contents of this disclosure can also be applied to a cell performing SSFD operation.

[0231] In a wireless communication system, i) the base station may perform full duplex operation and the terminal may perform half duplex operation, ii) the base station may perform half duplex operation and the terminal may perform full duplex operation, or iii) both the base station and the terminal may support full duplex operation.

[0232] A terminal that knows that the base station can perform full duplex operation may be referred to as an FD-aware terminal hereinafter. A terminal that knows that the base station can perform SBFD operation may be referred to as an SBFD-aware terminal hereinafter. A terminal that knows that the base station can perform SSFD operation may be referred to as an SSFD-aware terminal hereinafter.

[0233] If a base station supports both half-duplex and full-duplex operation, it can inform the terminal of the resources (time or frequency, or both) on which it can (or expects to) perform half-duplex and full-duplex.

[0234] If the base station is a full-duplex base station capable of SSFD operation, UL reception may be possible simultaneously on some or all of the frequency resources available for DL ​​transmission at the base station. In other words, some frequency resources may support both DL transmission / reception and UL reception / transmission. In this case, information about frequency resources capable of SSFD can be communicated to the terminal. Furthermore, information about time resources capable of SSFD can be communicated to the terminal.

[0235] In the case of a full-duplex terminal, UL transmission may be possible simultaneously on some or all of the frequency resources available for DL ​​reception of the terminal. In the present disclosure, a terminal that performs half-duplex operation may be referred to as an HD terminal, and a terminal that can (or does) perform full-duplex operation may be referred to as an FD terminal.

[0236] When a base station performs full duplex operation such as SBFD or SSFD, it may perform SSFD and / or SBFD operation only for some time / frequency resources. When an SBFD-aware terminal and / or an SSFD-aware terminal knows the time / frequency resources on which a cell performs SSFD and / or SBFD operation, the terminal may perform the operation differently depending on whether the cell operates in half duplex (HD) or SBFD or SSFD. For example, the terminal may perform transmission and reception by differently determining the time / frequency resources on which it performs reception of a DL signal / channel and / or transmission of a UL signal / channel as HD resources, SBFD resources, or SSFD resources.

[0237] The base station may perform a half-duplex operation in which only one of DL transmission or UL reception is performed in the entire frequency resources constituting the cell in the time resources operating in HD, and may perform a full-duplex operation in which DL transmission is performed through the first frequency resource (i.e., DL subband resource) within the frequency resources constituting the cell and UL reception is simultaneously performed through the second frequency resource (i.e., UL subband resource) within the frequency resources constituting the cell in the time resources operating in SBFD and SSFD.

[0238] To this end, the base station determines / determines time resources corresponding to the first time resource (i.e., HD symbol) and the second time resource (i.e., FD symbol) and transmits configuration information regarding the first time resource (i.e., HD symbol) and / or the second time resource (i.e., FD symbol) to the terminal. The FD symbol may include both the SBFD symbol and the SSFD symbol. More specifically, the base station may determine / determine time resources corresponding to the HD symbol, the SBFD symbol, and / or the SSFD symbol, and transmit configuration information regarding the HD symbol, the SBFD symbol, and / or the SSFD symbol to the terminal.

[0239] At this time, the DL subband resources and / or UL subband resources may be configured differently in the time resources operating in SBFD and in the time resources operating in SSFD. In the time resources operating in SBFD, the DL subband resources and UL subband resources are configured so as not to overlap each other. On the other hand, in the time resources operating in SSFD, the DL subband resources and UL subband resources may be configured so as to overlap each other. The DL subband / UL subband resources may be configured with a portion of the frequency resources of the system bandwidth or with the entire frequency resources.

[0240] The terminal receives configuration information about an HD symbol, an SBFD symbol, and / or an SSFD symbol from the network, and determines the positions of the HD symbol, the SBFD symbol, and / or the SSFD symbol. At this time, the terminal performs DL reception (UL transmission) through the entire frequency resources for which the terminal is configured to operate DL reception (UL transmission) in the HD symbol. And, in the SBFD symbol and / or the SSFD symbol, the terminal performs DL reception (UL transmission) through DL subband (UL subband) resources that are the same as or limited (smaller) to the frequency resources for which the terminal performs DL reception (UL transmission) in the HD symbol. In this case, even if the terminal configures frequency resources that do not correspond to DL subband resources (UL subband resources) in the SBFD symbol and / or SSFD symbol resources for DL ​​reception (UL transmission), the terminal does not perform DL reception (UL transmission) in the frequency resources that do not correspond to DL subband resources (UL subband resources).

[0241] Based on this discussion, the present disclosure proposes a method for differently adjusting the modulation and coding scheme (MCS) applied for transmission and reception of a specific channel (e.g., PDSCH / PUSCH) in resources operating in full duplex (FD) and resources operating in half duplex (HD) during intra-carrier full duplex operation.

[0242] In the following, the term "network" may be interpreted as a base station, gNB, or CU / DU. Furthermore, the term "terminal (UE)" may be interpreted as a mobile terminal (MT) of an IAB node.

[0243] For time / frequency resources operating in full duplex (FD), the channel environment may be worse than that of resources operating in half duplex (HD) due to cross-link interference (CLI), self-interference (SI), etc. Therefore, if the MCS applicable to PDSCH / PUSCH transmission / reception is indicated and determined based on the channel environment of resources operating in HD, PDSCH / PUSCH transmission / reception may not be performed properly.

[0244] A PDSCH / PUSCH carrying one transport block (TB) can be transmitted across FD resources and HD resources, for example, as follows.

[0245] 1) PDSCH / PUSCH can be transmitted and received across frequency resources operating in HD and frequency resources operating in FD within a specific slot.

[0246] 2) PDSCH / PUSCH can be transmitted and received across time (symbol) resources operating in HD and time (symbol) resources operating in FD within a specific slot.

[0247] Figure 18 shows examples in which PUSCH is transmitted across FD resources and HD resources.

[0248] Referring to (a) of Fig. 18, for the same time, PUSCH can be transmitted across frequency resources operating in HD (HD resources) and frequency resources operating in FD (FD resources) in terms of frequency resources. Here, the unit of frequency resources can mean PRB or RB group (RBG).

[0249] Referring to (b) of FIG. 18, for the same frequency, PUSCH can be transmitted across symbol resources operating in HD and symbol resources operating in FD in terms of time resources.

[0250] Meanwhile, a PDSCH / PUSCH carrying one transport block (TB) may be transmitted across FD resources and HD resources, for example, in the following situations:

[0251] 3) PDSCH / PUSCH can be transmitted repeatedly across slots operating in HD and slots operating in FD.

[0252] 4) TBoMS (TB processing over multiple slots) can be transmitted across slots operating as HD and slots operating as FD.

[0253] Figure 19 shows other examples in which PUSCH is transmitted across FD resources and HD resources.

[0254] Figure 19 (a) shows an example of a PUSCH repeatedly transmitted across slots (191, 192, 193) operating as FD and slot (194) operating as HD.

[0255] Fig. 19 (b) shows an example of TBoMS transmitted across slots (195, 196, 197) operating as FD and slot (198) operating as HD.

[0256] For convenience of explanation, the present disclosure is described based on the case where a terminal transmits a PUSCH. However, the principles of the present disclosure can be equally extended and applied to the case where a terminal receives a PDSCH.

[0257] <Proposal A. Method for determining TB size based on the ratio of resources operating as FDs and resources operating as HDs>

[0258] Code rate can be related to the ratio of information bits contained in the encoded bits. If the channel conditions are favorable, a high code rate can be applied, while if the channel conditions are unfavorable, a low code rate can be applied.

[0259] In general, FD resources are more likely to have poorer channel conditions than HD resources due to cross-link interference or self-interference. If the code rate applicable to PDSCH / PUSCH transmission and reception through FD resources is determined based on the channel conditions of HD resources, a code rate that is higher than the channel conditions may be applied, preventing proper PDSCH / PUSCH transmission and reception. Furthermore, if the code rate applicable to PDSCH / PUSCH transmission and reception through HD resources is determined based on the channel conditions of FD resources, unnecessarily low code rates may be applied to PDSCH / PUSCH transmission and reception. Methods to address these issues are described below.

[0260] First, when PUSCH transmission resources consist only of HD resources, a method for determining the transport block (TB) size (TBS) is described.

[0261] The TBS for PUSCH transmission can be determined based on the number of allocated PRBs (physical resource blocks).

[0262] To determine the TBS, the terminal determines the number of resource elements (RE) (N) within the slot.RE, (This can be said to be the total number of REs allocated to PUSCH).

[0263] To this end, the terminal first determines the number of REs (N') allocated to PUSCH within one PRB. RE ) can be determined as follows.

[0264] [Formula 1]

[0265]

[0266] N in Equation 1 RB sc =12, which is the number of subcarriers in the frequency domain of a physical resource block (PRB).

[0267] N sh symb is the number of symbols L of the PUSCH allocation.

[0268] N PRB DMRS is the number of REs for DM-RS per PRB in the allocated duration including the overhead of the DM-RS CDM groups without data.

[0269] N PRB oh is the overhead set by the upper layer parameter 'xOverhead' of 'PUSCH-ServingCellConfig'. N PRB oh If not set, N PRB oh is considered as 0.

[0270] The terminal allocates the total number of REs (N) to PUSCH as follows: RE) can be determined.

[0271] For TBoMS, N RE =N*min(156, N' RE )·n PRB, Here n PRB is the total number of PRBs allocated to the terminal, and N is the number of slots used for TBS determination indicated by 'numberOfSlotsTBoMS'. Otherwise, N RE =min(156, N' RE )·n PRB am.

[0272] The terminal is such N RE , modulation and codign scheme field: I MCS ) based on the modulation order (Q) m ), target code rate (R), the number of layers (v), etc., based on which unquantized intermediate variables (N) are generated. info ) and obtain the above N info The quantized intermediate number of information bits, N', is determined by the value of info ) and then TBS can be determined based on this.

[0273] For example, N info can be obtained by the following equation.

[0274] [Formula 1-1]

[0275]

[0276] If, N info If is less than or equal to a certain value (e.g., 3824), then the quantized intermediate number N' of information bits info can be obtained as follows:

[0277] [Formula 1-2]

[0278]

[0279] After that, in the table below, the above N' info the closest TBS that is not less than N' info ) is found.

[0280] [Table 5]

[0281]

[0282] N info If is greater than a certain value (e.g. 3824), then the quantized intermediate number N' of information bits info can be obtained as follows:

[0283] [Formula 1-3]

[0284]

[0285] At this time, the target code rates R and N' info Depending on the value of TBS can be determined as shown in Table 6 below.

[0286] [Table 6]

[0287]

[0288] As described above, in order for a terminal to determine the TB size (TBS) applied to PUSCH (or PDSCH of a base station) transmission, an unquantized intermediate variable (N) is used. info ) needs to be found, for example, N info is N info =N RE ·R·Q m ·v can be obtained as follows. As mentioned above, N RE is the total number of REs allocated to PUSCH, R is the target code rate, Q mis the modulation order, and v is the number of layers.

[0289] The terminal determines the corresponding Q from the MCS index applied to the PUSCH transmission. m The values ​​and R values ​​can be obtained. As mentioned above, the terminal is N info You can use it to get the final TB size.

[0290] However, although the base station assumes that the terminal will operate on HD resources and instructs the terminal on the MCS index to be applied for PUSCH transmission, the terminal may actually perform PUSCH transmission on FD resources. In this case, the PUSCH transmitted using the instructed MCS index may not be successfully transmitted due to the worse channel environment on FD resources compared to HD resources.

[0291] Alternatively, the base station may assume that the terminal will operate on FD resources and instruct the terminal on the MCS index to be applied for PUSCH transmission, but the terminal may actually perform PUSCH transmission on HD resources. In this case, although the channel environment on HD resources is better than on FD resources, allowing for more data transmission, only a smaller amount of data may be transmitted on PUSCH.

[0292] Considering these problems, the present disclosure proposes that when a terminal transmits a PUSCH, the TB size applied to the PUSCH transmission is determined by considering the ratio of FD resources operating as FD and HD resources operating as HD among the resources on which the PUSCH is transmitted.

[0293] Considering that the terminal supports FD operation and that the HD / FD operation of the terminal may vary depending on the time resource, in the present disclosure, 'resources for which the cell operates in HD' and 'resources for which the cell operates in FD' may be replaced and interpreted as 'resources for which the terminal operates in HD' and 'resources for which the terminal operates in FD', respectively.

[0294] Below, R HD and R FD can be defined as follows:

[0295] R HD refers to the ratio of resources in which cells operate in HD within a specific resource. More specifically, R HD may mean at least one of the following:

[0296] 1) For the first slot in which PUSCH is transmitted, the ratio of the number of symbols in which the cell operates in HD to the number of symbols in which PUSCH is transmitted.

[0297] 2) The ratio of the number of symbols in which the cell operates in HD to the number of symbols in which the PUSCH is transmitted within the K slots in which the PUSCH is transmitted.

[0298] 3) The ratio of the number of slots in which the cell operates in HD within the K slots in which PUSCH is transmitted.

[0299] 4) For the first slot where PUSCH is transmitted, the ratio of the number of PRBs in which the cell operates in HD to the number of PRBs in which PUSCH is transmitted.

[0300] 5) Within the K slots where PUSCH is transmitted, the ratio of the number of PRBs where the cell operates in HD to the number of PRBs where PUSCH is transmitted.

[0301] R FD means the ratio of resources in which cells operate as FDs within a specific resource. More specifically, R FD may mean at least one of the following:

[0302] 1) For the first slot in which PUSCH is transmitted, the ratio of the number of symbols in which the cell operates as an FD to the number of symbols in which PUSCH is transmitted.

[0303] 2) The ratio of the number of symbols in which the cell operates as an FD to the number of symbols in which the PUSCH is transmitted within the K slots in which the PUSCH is transmitted.

[0304] 3) The ratio of the number of slots in which the cell operates as an FD within the K slots in which PUSCH is transmitted.

[0305] 4) For the first slot where PUSCH is transmitted, the ratio of the number of PRBs where the cell operates as an FD to the number of PRBs where PUSCH is transmitted.

[0306] 5) The ratio of the number of PRBs in which the cell operates as an FD to the number of PRBs in which the PUSCH is transmitted within the K slots in which the PUSCH is transmitted.

[0307] As mentioned above, conventionally, a terminal calculates the TB size of a transport block (TB) transmitted through a PUSCH using N info The value of N info = N RE ·R·Q m ·Get it like v.

[0308] Method 1. At this time, in the present disclosure, N is used to calculate the TB size (TBS) of the TB transmitted by the terminal to the PUSCH. RE We propose to calculate the value as follows:

[0309] Alt 1. Terminal is N RE The value is determined as follows:

[0310] N RE = N · min(156, N' RE )·n PRB ·R HD ·α

[0311] In this way, the more resources there are operating as FDs, the more N RE If the value is determined to be small, the TB size can be reduced. This can ultimately have the effect of reducing the code rate for PUSCH transmission, enabling stable PUSCH transmission even when there are many FD resources in poor channel conditions.

[0312] In the above formula, the value of α (= alpha, alpha) can be fixed to a specific value. For example, the value of alpha can be 1. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0313] At this time, N RE N to ensure that the value is an integer RE The value can also be obtained by applying the floor function or ceil function to the value obtained by the above formula (where floor(x) is the largest integer less than or equal to x, and ceil(x) is the smallest integer greater than or equal to x). That is, N RE The value is floor(N·min(156, N' RE )·n PRB ·R HD ·α) or ceil(N·min(156, N' RE )·n PRB ·R HD ·α) can be judged as follows.

[0314] Alt 2. Terminal is N RE The value can be judged as follows:

[0315] N RE = N·min(156, N' RE )·n PRB ·(R HD +R FD ·α)

[0316] or N RE = N·min(156, N' RE )·n PRB ·((1-R FD )+RFD ·α)

[0317] = N·min(156, N' RE )·n PRB ·(1-(1-α)R FD )

[0318] According to the above formula, the more resources that operate as FD, the more N RE The value is determined to be small, and the TB size can be reduced. This can result in a reduced code rate for PUSCH transmission, and ensure stable PUSCH transmission even when there are many FD operating resources in poor channel conditions.

[0319] At this time, the value of α (= alpha) can be fixed to a specific value. For example, the value of alpha can be 0.5. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0320] At this time, additionally N RE N to ensure that the value is an integer RE The value may be equal to the value obtained by applying the floor function or ceil function to the value obtained by the above formula.

[0321] Alt 3. Terminal is N RE The value can be judged as follows:

[0322] N RE = N·min(156, N' RE )·n PRB ·α

[0323] At this time, the value of α (= alpha) may be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0324] According to this method, N depends on the value of alpha. REBy adjusting the value, the TB size can be reduced when many resources operate as FDs. Consequently, when many resources operate as FDs, the code rate for PUSCH transmission can be reduced, and PUSCH transmission can be performed stably even when many FD-operating resources are in poor channel conditions.

[0325] At this time, additionally N RE To ensure that the value is an integer, N RE The value may be equal to the value obtained by applying the floor function or ceil function to the value obtained by the above formula.

[0326] Method 2. N for calculating the TB size of TB transmitted via PUSCH info The value can be calculated by the terminal as follows. That is, in method 1, the existing N is used when calculating TBS. RE I explained how to change / judge the value, but in method 2, the existing N info Explains how to change / judge the value.

[0327] Alt 1. Terminal is N info The value can be judged as follows:

[0328] N info = N RE ·R·Q m ·v·R HD ·α

[0329] Through the above judgment, the more resources are operating as FD, the more N info By determining the value as small, the TB size can be reduced. Consequently, the code rate for PUSCH transmission can be reduced, and PUSCH transmission can be performed stably even when there are many FD operating resources in poor channel conditions.

[0330] At this time, the value of α (alpha) can be fixed to a specific value. For example, the value of alpha can be 1. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0331] At this time, additionally N info To ensure that the value is an integer, N info The value may be equal to the value obtained by applying the floor function or ceil function to the value obtained by the above formula.

[0332] Alt 2. Terminal is N info The value can be judged as follows:

[0333] N info = N RE ·R·Q m ·v·(R HD +R FD ·α)

[0334] Or, N info =N RE ·R·Q m ·v·((1-R FD )+R FD ·α) = N RE ·R·Q m ·v·(1-(1-α)·R FD )

[0335] As a result of the above judgment, the more resources are operating as FD, the more N info By determining the value as small, the TB size can be reduced. Consequently, the code rate for PUSCH transmission can be reduced, and PUSCH transmission can be performed stably even when there are many FD operating resources in poor channel conditions.

[0336] Specifically, the value of α (alpha) can be greater than 0 and less than 1. In this case, the value of alpha can be fixed to a specific value. For example, the value of alpha can be equal to 0.5. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0337] At this time, additionally N RE N to ensure that the value is an integer RE The value may be equal to the value obtained by applying the floor function or ceil function to the value obtained by the above formula.

[0338] Alt 3. Terminal is N info The value can be judged as follows:

[0339] N info = N RE ·R·Q m ·v·α

[0340] At this time, the value of α (alpha) may be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0341] Based on the above judgment, N is determined based on the value of alpha. info By adjusting the value, the TB size can be reduced when many resources operate as FDs. Consequently, when many resources operate as FDs, the code rate for PUSCH transmission can be reduced, and PUSCH transmission can be performed stably even when many FD-operating resources are in poor channel conditions.

[0342] At this time, additionally N info N to ensure that the value is an integer info The value may be equal to the value obtained by applying the floor function or ceil function to the value obtained by the above formula.

[0343] According to the above proposal, a base station can schedule PUSCH transmission to a terminal as follows.

[0344] First, the base station determines / decides which resources the cell operates as FD and which resources it operates as HD, and signals information about the location and / or quantity of the corresponding resources to the terminal.

[0345] The base station then schedules PUSCH transmission to the terminal via DCI.

[0346] Additionally, the base station can indicate the value of α (alpha) to the terminal via DCI scheduling PUSCH transmission or via RRC / MAC-CE signaling.

[0347] The base station can determine the TB size transmitted by the terminal via PUSCH through a method such as method 1 or method 2.

[0348] <Proposal B. A method for determining the repetition number based on the ratio of resources operating as FDs and resources operating as HDs>

[0349] When transmitting a PUSCH, the terminal may transmit the PUSCH repeatedly K times using repetition type A or repetition type B according to instructions from the network. Alternatively, when receiving a PDSCH, the terminal may determine that the PDSCH is transmitted repeatedly using K consecutive slots according to instructions from the network.

[0350] To determine the number of repetitions (K) applied to a PUSCH transmission, a terminal can operate as follows. First, the conventional operation is described. In the conventional operation, the terminal did not support FD operation and only supported HD operation. In other words, it was safe to assume that the terminal operated only on HD resources.

[0351] Conventionally, in TBoMS (TB processing over multiple slots), when transmitting a PUSCH scheduled by DCI format 0_1 ​​or 0_2 (with NDI = 1), the number of slots N used for TBS determination is indicated by 'numberOfSlotsTBoMS'.

[0352] Conventionally, the number of repetitions K of the number of slots N used for TBS judgment is equal to 'numberOfRepetitions' when the resource allocation table (e.g., 'PUSCH-TimeDomainResourceAllocationList') has 'numberOfRepetitions' (e.g., when an entry of 'PUSCH-TimeDomainResourceAllocationList' provides 'numberOfRepetitions'), otherwise, K=1.

[0353] If the terminal supports TBoMS, the terminal does not expect N·K to be greater than 32.

[0354] When μ(subcarrier spacing setting) is set to 5 or 6, the terminal does not expect more than one PUSCH to be scheduled in a slot by a single DCI or multiple DCIs.

[0355] For PUSCH repetition type A, when transmitting a PUSCH scheduled by DCI format 0_1 ​​or 0_2, if the resource allocation table (e.g., 'PUSCH-TimeDomainResourceAllocationList') contains 'numberOfRepetitions', the repetition number K is equal to 'numberOfRepetitions'. Otherwise, if the UE has been configured with 'pusch-AggregationFactor', the repetition number K is equal to 'pusch-AggregationFactor'. Otherwise, K=1. The number of slots N used for TBS determination is equal to 1.

[0356] However, although the base station assumes that the terminal will operate on HD resources and instructs the terminal to have a K value, which is the number of repetitions to be applied for PUSCH transmission, in reality, the terminal may perform PUSCH transmission on FD resources.

[0357] In such cases, the channel environment in FD resources may be worse than in HD resources, and the PUSCH transmitted by applying the indicated repetition count value may not be transmitted successfully.

[0358] Alternatively, the base station may assume that the terminal will operate on FD resources and instruct the terminal on the number of repetitions to apply for PUSCH transmission, but in reality, the terminal may perform PUSCH transmission on HD resources. In this case, the channel conditions on HD resources are better than on FD resources, allowing data transmission using fewer resources, but this may result in PUSCH transmission using more resources than necessary. In other words, this may result in a waste of resources.

[0359] Considering the above problems, the present disclosure proposes that when a terminal transmits a PUSCH, the number of repetitions applied to the PUSCH transmission is determined by considering at least one of the ratio of resources operating as FD and the ratio of resources operating as HD among the resources on which the PUSCH is transmitted.

[0360] Considering that a terminal can perform FD operation and whether the terminal operates HD / FD may vary depending on time resources, in the present disclosure, 'resources for a cell to operate in HD' and 'resources for a cell to operate in FD' may be replaced with 'resources for a terminal to operate in HD' and 'resources for a terminal to operate in FD', respectively.

[0361] R used in this proposal HD and R FD Each of them represents the ratio of resources that operate as HD and the ratio of resources that operate as FD within a specific resource. More specifically, it may be the same as the definition in the above <Proposal A. Method for determining TB size according to the ratio of resources that operate as FD and resources that operate as HD>.

[0362] Conventionally, if the resource allocation table contains 'numberOfRepetitions', the repetition count K is equal to 'numberOfRepetitions'. Otherwise, if the terminal has 'pusch-AggregationFactor' set, the repetition count K is equal to 'pusch-AggregationFactor'. Otherwise, K=1.

[0363] Method 1. For the conventional process described above, the present disclosure proposes that the terminal calculate the K value, which is the number of repetitions applied to PUSCH transmission, as follows.

[0364] Alt 1. When the terminal receives the 'numberOfRepetitions' value from the base station through DCI scheduling PUSCH, it determines the K value as follows.

[0365] K = numberOfRepetitions·1 / R HD ·α

[0366] At this time, the value of α (alpha) can be fixed to a specific value. For example, the value of alpha can be equal to 1. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0367] According to the above method, the number of resources operating as FDs can be increased by determining a larger K value, thereby increasing the number of repetitions. Consequently, even if there are many FD operating resources with poor channel conditions, PUSCH transmission can be performed stably.

[0368] Alt 2. When the terminal receives the 'numberOfRepetitions' value from the base station through DCI scheduling PUSCH, the terminal determines the K value as follows.

[0369] K = numberOfRepetitions·(R HD +R FD ·α)

[0370] Or K = numberOfRepetitions·((1-R FD )+R FD ·α) = numberOfRepetitions·(1-(1-α)·R FD )

[0371] Specifically, the value of α (alpha) can be a value greater than or equal to 1. In this case, the value of alpha can be fixed to a specific value. For example, the value of alpha can be equal to 2. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0372] Through the above method, the number of iterations can be increased by determining a larger value for K as the number of resources operating as FDs increases. Consequently, PUSCH transmission can be performed stably even when there are many FD operating resources in poor channel conditions.

[0373] Alt 3. When the terminal receives the 'numberOfRepetitions' value from the base station through DCI scheduling PUSCH, it determines the K value as follows.

[0374] K = numberOfRepetitions·α

[0375] Specifically, the value of α (alpha) may be a value greater than or equal to 1. In this case, the value of alpha may be fixed to a specific value. For example, the value of alpha may be equal to 2. Alternatively, the value of alpha may be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0376] By increasing the number of resources operating as FDs through at least one of the above methods, the K value can be determined to be larger, thereby increasing the number of iterations. Consequently, even with a large number of FD operating resources in poor channel conditions, PUSCH transmission can be performed reliably.

[0377] Additionally, at this time, in order to make the K value an integer, the K value may be equal to the value obtained by applying the floor function or ceil function to the value obtained by the above formula.

[0378] Additionally / independently, the values ​​that can currently be indicated by 'numberOfRepetitions' are limited. That is, only one value within a specific set can be indicated by 'numberOfRepetitions'.

[0379] In consideration of this, the K value according to the present disclosure may be the value closest to the value obtained by the above formula among the values ​​that can be indicated by 'numberOfRepetitions'.

[0380] Alternatively, the K value may be equal to the largest value among the values ​​that can be indicated by 'numberOfRepetitions' and that are less than or equal to the value obtained by the above formula.

[0381] Alternatively, the K value may be equal to the smallest value among the values ​​that can be indicated by 'numberOfRepetitions' and that are equal to or greater than the value obtained by the above formula.

[0382] Additionally / independently, if the value obtained by the above formula (or the K value obtained as above) is less than 1, the value of K may be equal to 1.

[0383] The value obtained by the above formula (or the K value obtained as above) is K max If it is greater than K, the value of K max It can be the same as . At this time, K max The value of may be equal to the largest of the values ​​that can be indicated by 'numberOfRepetitions', or K maxThe value of may be equal to A times the largest value among the values ​​that can be indicated by 'numberOfRepetitions'. In this case, A may be equal to 2. Alternatively, the value of A may be a value set by the network through RRC signaling, etc.

[0384] The above proposes a method for determining the value of K through the value of 'numberOfRepetitions' to which the terminal is instructed, but the contents of the above disclosure can be equally applied to a case where the value of K is determined through the value of 'pusch-AggregationFactor' to which the terminal is instructed.

[0385] According to the above proposal, a base station can schedule PUSCH transmission to a terminal as follows.

[0386] First, the base station determines / decides which resources the cell operates as FD and which resources it operates as HD, and signals information about the location and / or quantity of the corresponding resources to the terminal.

[0387] The base station then schedules PUSCH transmission to the terminal via DCI.

[0388] The base station can indicate the value of α (alpha) to the terminal through DCI scheduling PUSCH transmission or through RRC / MAC-CE signaling.

[0389] The base station determines the number of repetitions of the PUSCH transmitted by the terminal through a method such as method 1 or method 2.

[0390] Figure 20 illustrates an operation method of the terminal.

[0391] Referring to FIG. 20, the terminal determines the number of times (K) of repeated PUSCH (physical uplink shared channel) transmission, and K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission. FD) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is determined based on at least one of the following (S201).

[0392] The terminal repeatedly transmits the above PUSCH K times (S202).

[0393] The terminal may receive an upper layer message indicating a list including multiple entries indicating resources that can be used for transmission of the PUSCH.

[0394] For example, the terminal may receive, via an RRC message, a 'PUSCH-TimeDomainResourceAllocationList', which is a list containing multiple entries indicating resources that can be used for PUSCH transmission.

[0395] Table 7 is an example of 'PUSCH-TimeDomainResourceAllocationList'.

[0396] 'PUSCH-TimeDomainResourceAllocationList' may contain one or more entries named 'PUSCH-TimeDomainResourceAllocation'. 'PUSCH-TimeDomainResourceAllocation' may be used to establish a time domain relationship between PDCCH and PUSCH.

[0397] Each entry of 'PUSCH-TimeDomainResourceAllocationList' may include at least one of, for example, the number / offset of slots (k2) between a PDCCH / DCI reception slot and a PUSCH transmission slot, the mapping type of PUSCH (mappingType), the start symbol and length of PUSCH (startSymbolAndLength), the start symbol of PUSCH (startSymbol), the length of PUSCH (length), the number of repetitions of PUSCH (numberOfRepetitions, numberOfRepetitionsExt), and the number of slots allocated for TBoMS (numberOfSlotsTBoMS).

[0398] [Table 7]

[0399]

[0400] Additionally, the terminal can receive downlink control information (DCI) including a field indicating a specific entry among multiple entries included in the list.

[0401] That is, the network can indicate which time domain allocation among the configured time domain allocations the terminal will apply through a UL grant (e.g., DCI format 0_0, 0_1, 0_2, or 0_3). For example, a specific entry among the entries of the 'PUSCH-TimeDomainResourceAllocationList' can be indicated based on the value of the time domain resource assignment field included in the UL grant.

[0402] As described above, the entry may include at least one of information indicating the number of slots between a downlink control information reception slot and a PUSCH transmission slot (k2), information indicating a mapping type of PUSCH (mappingType), information indicating a start symbol and length of PUSCH (startSymbolAndLength), information indicating a start symbol of PUSCH (startSymbol), information indicating a length of PUSCH (length), information indicating a number of repetitions (numberOfRepetitions), and information indicating the number of slots allocated for TBoMS (Transport block processing over multiple slots) (numberOfSlotsTBoMS).

[0403] If the above entry contains information indicating the number of repetitions (numberOfRepetitions), the terminal compares the value indicated by the information with the R HD The above K can be determined based on the product of the reciprocals of .

[0404] For example, K = numberOfRepetitions·1 / R HD ·Can be determined as α. At this time, the value of α (alpha) can be fixed to a specific value. For example, the value of alpha can be equal to 1. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0405] In an embodiment, if the entry includes information indicating the number of repetitions (numberOfRepetitions), the terminal may compare the value indicated by the information with the R HD and the above R FD Based on this, the above K can be determined.

[0406] For example, K = numberOfRepetitions·(R HD +R FD·α) can be judged as follows.

[0407] Or K = numberOfRepetitions·((1-R FD )+R FD ·α) = numberOfRepetitions·(1-(1-α)·R FD ) can be determined as follows. Here, the value of α (alpha) can be a value greater than or equal to 1 or a value greater than 1. At this time, the value of alpha can be fixed to a specific value. For example, the value of alpha can be equal to 2. Alternatively, the value of alpha can be a value that the terminal is instructed to receive from the network through RRC, MAC-CE, and / or DCI signaling.

[0408] In the above embodiments, the terminal is R FD The value of K can be determined so that the value of K increases as the value of increases.

[0409] Since K is the number of repeated transmissions of PUSCH, a floor function or ceil function can be applied to the value obtained from the above formula to make the value an integer.

[0410] Figure 21 illustrates the signaling process and operation between a base station and a terminal.

[0411] Referring to FIG. 21, the base station transmits an upper layer message (e.g., 'PUSCH-TimeDomainResourceAllocationList') that sets a TDRA (time domain resource allocation) table / list to the terminal (S211).

[0412] The base station transmits DCI (S212) containing information indicating the number of repetitions (e.g., 'numberOfRepetitions') to the terminal. For example, 'numberOfRepetitions' may be included in each entry of the TDRA table / list. In this case, a specific entry among multiple entries of the TDRA table / list may be notified based on the value of a specific field of the DCI. Then, the terminal can know the 'numberOfRepetitions' value included in the specific entry.

[0413] The terminal determines the number of PUSCH repetition transmissions (K) based on at least one of the information indicating the number of repetitions and the ratio of HD resources and the ratio of FD resources among the resources allocated for PUSCH transmission (S213).

[0414] For example, K = numberOfRepetitions·1 / R HD ·α, K = numberOfRepetitions·(R HD +R FD ·α), K = numberOfRepetitions·((1-R FD )+R FD ·α) = numberOfRepetitions·(1-(1-α)·R FD ) can be determined as follows. Or, it can be determined as K = numberOfRepetitions·α. At this time, the alpha (α) may be a value set by considering the ratio of HD resources or FD resources among the resources allocated for PUSCH transmission, and may be determined in advance or set by the network.

[0415] The terminal repeatedly transmits PUSCH to the base station K times (S214).

[0416] According to the method of FIGS. 20 and 21, in a wireless communication system including a terminal supporting both FD and HD operations, the number of repeated transmissions of the data channel can be determined / set by considering the type of resources transmitting the data channel, i.e., the amount or ratio of FD resources and HD resources. Accordingly, repeated transmission of the data channel can be performed more efficiently.

[0417] In addition, when repeatedly transmitting data channels through different types of resources, the method for determining the number of repetitions can be made clear, thereby preventing ambiguity between the transmitting and receiving entities.

[0418] Below, a method for adjusting the number of repetitions applied for transmission and reception of PDSCH / PUSCH / PUCCH / PRACH, etc., is proposed in more detail, taking into account the amount of resources operating in full duplex (FD) and resources operating in half duplex (HD) during intra-carrier full duplex operation.

[0419] For time / frequency resources operating in Full Duplex (FD), the channel environment may be worse than that of resources operating in Half Duplex (HD) due to cross-link interference (CLI), self-interference (SI), etc. Therefore, if the number of repetitions applied to PDSCH / PUSCH transmission / reception through FD resources is determined based on the channel environment of resources operating in HD, PDSCH / PUSCH transmission / reception may not be performed properly.

[0420] Meanwhile, a PDSCH / PUSCH / PUCCH carrying a specific transport block (TB) can be transmitted across FD resources and HD resources, for example, in the following situations:

[0421] PDSCH / PUSCH / PUCCH can be transmitted and received across frequency resources operating in HD and frequency resources operating in FD within a specific slot. For example, as illustrated in FIGS. 18 and 19 described above, PDSCH / PUSCH / PUCCH can be transmitted and received across resources operating in HD and resources operating in FD in various ways.

[0422] For convenience of explanation, the following description is based on the case of transmitting a PUSCH. However, the principles / contents of the present disclosure can be equally extended / applied to cases where PDCCH, PDSCH, PUCCH, PRACH, etc. are repeatedly transmitted and received.

[0423] In general, for PUSCH transmission, the network can instruct the appropriate number of repetitions of PUSCH transmission depending on whether the resource transmitting the PUSCH is an HD resource or an FD resource (i.e., the type of the resource).

[0424] The following is an example of how a terminal determines the number of repetitions (i.e., the number of repetitions K) applicable to TBoMS and PUSCH repetition type A.

[0425] In TBoMS (TB processing over multiple slots), when transmitting a PUSCH scheduled by DCI format 0_1 ​​or 0_2 (NDI=1), the number of slots N used for TBS determination is indicated by 'numberOfSlotsTBoMS'.

[0426] The number of repetitions K of the number of slots N used for TBS judgment is equal to 'numberOfRepetitions' if 'numberOfRepetitions' exists in the resource allocation table (e.g., 'PUSCH-TimeDomainResourceAllocationList'), otherwise K=1.

[0427] If the terminal supports TBoMS, the terminal does not expect N·K to be greater than 32.

[0428] When μ(subcarrier spacing setting) is set to 5 or 6, the terminal does not expect more than one PUSCH to be scheduled in a slot by a single DCI or multiple DCIs.

[0429] For PUSCH repetition type A, when transmitting a PUSCH scheduled by DCI format 0_1 ​​or 0_2, if the resource allocation table (e.g., 'PUSCH-TimeDomainResourceAllocationList') contains 'numberOfRepetitions', the repetition number K is equal to 'numberOfRepetitions'. Otherwise, if the UE has been configured with 'pusch-AggregationFactor', the repetition number K is equal to 'pusch-AggregationFactor'. Otherwise, K=1. The number of slots N used for TBS determination is equal to 1.

[0430] For PUSCH repetition type A, when transmitting a PUSCH scheduled by a random access response (RAR) uplink (UL) grant, the two most significant bits (MSBs) of the MCS information field of the RAR UL grant provide a codepoint that determines the number of repetitions K depending on whether the upper layer parameter 'numberOfMsg3-RepetitionsList' is set. The number of slots N used for TBS determination is equal to 1.

[0431] For PUSCH repetition type A, when transmitting a PUSCH scheduled by DCI format 0_0, the two MSBs of the MCS information field of the DCI format 0_0 provide code points for determining the number of repetitions K, depending on whether the upper layer parameter 'numberOfMsg3-RepetitionsList' is set. The number of slots N used for TBS determination is equal to 1.

[0432] Meanwhile, in cases where the network does not dynamically indicate the number of repetitions, such as in CG (configured grant)-PUSCH, or where the type of resource on which PUSCH transmission is performed may vary depending on the PUSCH transmission, the number of repetitions of PUSCH transmissions may not be applied differently depending on the type of resource on which PUSCH transmission is actually performed. Taking this into account, a method of indicating / determining the number of repetitions applied to PUSCH transmissions differently depending on the resource type may be considered.

[0433] Alternatively, even if the network can dynamically indicate the number of repetitions, such as in DG (dynamic grant)-PUSCH, a method of indicating / determining the number of repetitions applied to PUSCH transmission differently depending on the resource type may be considered, considering that the candidate set of appropriate repetitions may differ depending on the resource type.

[0434] Below, we propose a method for a terminal to determine the number of repetitions of PUSCH transmissions depending on the type of resource (e.g., HD resource or FD resource) on which PUSCH transmissions are performed.

[0435] <PUSCH 전송의 반복 횟수를 판단하는 방법>

[0436] Proposal A. A method to independently dictate the number of iterations based on the resource type.

[0437] A terminal can independently receive from the base station the number of repetitions to be applied to the PUSCH transmitted by the terminal, depending on the resource type. More specifically, the terminal can independently receive from the base station the number of repetitions of the PUSCH applied to HD resources and the number of repetitions of the PUSCH applied to FD resources.

[0438] In this case, the terminal receives two repetition counts from the base station, Rep number 1 and Rep number 2. Thereafter, if the resource through which the terminal transmits the PUSCH is an HD resource, the terminal transmits the PUSCH repeatedly with a repetition count of 1, and if the resource through which the terminal transmits the PUSCH is an FD resource, the terminal transmits the PUSCH repeatedly with a repetition count of 2.

[0439] These two repetition counts can be transmitted from the base station to the terminal via RRC, MAC-CE, and / or DCI signaling.

[0440] When the terminal is configured with two repetition counts through RRC signaling, the terminal can configure the repetition count 1 applied to the HD resource and the repetition count 2 applied to the FD resource through independent parameters. For example, the repetition count 1 value applied to the HD resource can be configured through the upper layer parameter 'pusch-AggregationFactor' as before. Meanwhile, the repetition count 2 value applied to the FD resource can be configured through an additional upper layer parameter (e.g., 'pusch-AggregationFactor-DE') defined by the corresponding parameter.

[0441] Additionally, depending on the resource type, the candidates for the repetition count that the terminal can be instructed to can be configured differently. For example, in the case of the repetition count applied to the HD resource, the terminal can set it to one of the candidate values ​​{2, 4, 8} as before by applying the existing 'pusch-AggregationFactor'. On the other hand, in the case of the repetition count applied to the FD resource, the set of candidate values ​​that can be set can be configured differently. For example, in the case of the 'pusch-AggregationFactor' applied to the FD resource (e.g., 'pusch-AggregationFactor-DE'), the terminal can set it to one of the candidate values ​​{4, 8, 16} or {2, 4, 8, 16}.

[0442] When a terminal is instructed to specify two repetition counts via DCI, the terminal may receive a 'numberOfRepetitions' value from the base station via DCI signaling to determine the repetition count. For example, 'numberOfRepetitions', which is mapped to each row (entry) of the TDRA table / list, may first be configured via RRC signaling. Then, a specific 'numberOfRepetitions' value may be indicated via the TDRA field in the DCI. Table 8 is an example of an RRC message that configures a TDRA table / list.

[0443] [Table 8]

[0444]

[0445] At this time, in order for the terminal to be instructed about two repetition counts through DCI, two repetition count values ​​may exist in the Time Domain Resource Allocation (TDRA) table / list. That is, there may be two repetition counts mapped to a specific value in the TDRA field, which may mean repetition count 1 and repetition count 2, respectively.

[0446] To this end, the terminal can receive two repetition counts (i.e., repetition count 1 and repetition count 2) mapped to each row of the TDRA field from the base station through RRC signaling.

[0447] In this case, the terminal can set the repetition count 1 value, which is the repetition count applied to the HD resource, through the upper layer parameter 'numberOfRepetitions-r16' or 'numberOfRepetitionsExt-r17' as before. Meanwhile, the repetition count 2 value, which is applied to the FD resource, can be set through an additional upper layer parameter (e.g., 'numberOfRepetitionsExt-DE') defined therein.

[0448] Additionally, depending on the resource type, the candidates for the number of repetitions that the terminal can be instructed to may be configured differently. For the number of repetitions applied to an HD resource, the terminal may apply 'numberOfRepetitionsExt-r17' to set it to one of the candidate values ​​{1, 2, 3, 4, 7, 8, 12, 16, 20, 24, 28, 32}. Meanwhile, for the number of repetitions applied to an FD resource, the set of candidate values ​​that can be set may be configured differently. For example, for the 'numberOfRepetitions' applied to an FD resource (e.g., 'numberOfRepetitionsExt-DE'), the terminal may set it to one of the candidate values ​​{1, 2, 3, 4, 7, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64}.

[0449] Based on the above proposal, the terminal can operate, for example, as follows:

[0450] The terminal receives information from the base station about resources for which the cell operates in HD and / or resources for which the cell operates in FD.

[0451] The terminal receives a PUSCH transmission schedule from the base station. At this time, the terminal receives the repetition count 1 and repetition count 2 applied to the PUSCH transmission from the base station through RRC and / or DCI signaling.

[0452] The terminal transmits the scheduled PUSCH to the base station. At this time, if the transmitted PUSCH transmission resource type is an HD resource, the PUSCH is repeatedly transmitted as many times as the repetition count 1. If the transmitted PUSCH transmission resource type is an FD resource, the PUSCH is repeatedly transmitted as many times as the repetition count 2.

[0453] When the terminal determines whether the PUSCH transmission resource type is an HD resource or an FD resource,<PUSCH 전송의 자원 타입을 판단하는 방법> It can be judged based on the contents of the proposal.

[0454] Based on this proposal, a base station could operate, for example, as follows:

[0455] The base station sets / provides information to the terminal about the resources for which the cell operates as HD and / or as FD.

[0456] The base station schedules PUSCH transmission to the terminal. At this time, the base station indicates to the terminal the repetition number applied to the PUSCH transmission, which is repetition number 1 and repetition number 2, through RRC and / or DCI signaling.

[0457] The base station receives the scheduled PUSCH from the terminal. At this time, if the PUSCH transmission resource type is an HD resource, it is determined that the PUSCH is repeatedly transmitted as many times as the repetition count 1. If the PUSCH transmission resource type is an FD resource, it is determined that the PUSCH is repeatedly transmitted as many times as the repetition count 2.

[0458] At this time, the base station determines whether the PUSCH transmission resource type is an HD resource or an FD resource.<PUSCH 전송의 자원 타입을 판단하는 방법> It can be judged based on the contents of the proposal.

[0459] Proposal B. Number of iterations applied to FD resources

[0460] When transmitting PUSCH over FD resources, the UE determines the number of repetitions applicable to the HD resource based on specific rules. More specifically, the UE determines the number of PUSCH repetitions applicable to the HD resource using the same instructions / judgments as before, and then, based on this number of repetitions, determines the number of PUSCH repetitions applicable to the FD resource based on specific rules / formulas.

[0461] In this case, the terminal is instructed by the base station to set the number of repetitions, which is the number of repetitions 1. The number of repetitions 1 may refer to the number of repetitions (i.e., 'numberOfRepetitions') for PUSCH transmission, which the terminal is instructed to do through RRC and / or DCI signaling from the base station, as before.

[0462] Thereafter, the terminal determines the value of repetition count 2 based on a specific rule / formula based on repetition count 1. Thereafter, if the resource transmitting the PUSCH is an HD resource, the terminal repeatedly transmits the PUSCH for a repetition count of 1, and if the resource transmitting the PUSCH is an FD resource, the terminal repeatedly transmits the PUSCH for a repetition count of 2.

[0463] More specifically, the number of repetitions 2 can be determined / judged as follows:

[0464] Option 1.

[0465] The number of iterations 2 can be calculated as the number of iterations 1 x alpha. That is, the number of iterations 2 can be calculated as the product of the number of iterations 1 and alpha.

[0466] When the terminal determines that the number of repetitions applied to PUSCH transmission in HD resources (i.e., 'numberOfRepetitions') is 1, it can calculate the number of repetitions as 2 = number of repetitions 1 x alpha (number of repetitions 2 = number of repetitions 1 · α).

[0467] At this time, alpha may be fixed to a specific value and defined in the standard specification, and / or may be indicated to the terminal by RRC, MAC-CE, and / or DCI signaling from the base station.

[0468] Option 2.

[0469] The number of iterations 2 can be calculated as the number of iterations + beta (beta, β).

[0470] When the terminal determines that the number of repetitions applied to PUSCH transmission in HD resources (i.e., 'numberOfRepetitions') is 1, it can calculate the number of repetitions as 2 = number of repetitions 1 + beta (number of repetitions 2 = number of repetitions 1 + β).

[0471] At this time, beta may be fixed to a specific value and defined in the standard specification, and / or may be indicated to the terminal by RRC, MAC-CE, and / or DCI signaling from the base station.

[0472] Option 3.

[0473] The number of iterations 2 can be calculated as the number of iterations 1 x alpha + beta.

[0474] When the terminal determines that the number of repetitions applied to PUSCH transmission in HD resources (i.e., 'numberOfRepetitions') is 1, it can calculate the number of repetitions as 2 = number of repetitions 1 x alpha + beta.

[0475] At this time, the alpha and / or beta values ​​may be fixed to specific values ​​and defined in the standard specifications, and / or may be indicated to the terminal by RRC, MAC-CE, and / or DCI signaling from the base station.

[0476] Additionally, the number of repetitions 2 is calculated as above, but the number of repetitions 2 can be determined to be included in a set of specific candidate values. For example, the number of repetitions 2 can have a value included in a set such as {1, 2, 3, 4, 7, 8, 12, 16, 20, 24, 28, 32} or {1, 2, 3, 4, 7, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64}. If the number of repetitions 2 is calculated by the above formula, but the value is not included in the set of candidate values ​​that the number of repetitions 2 can have, the value of the number of repetitions 2 can be determined / judged as one of the following values ​​included in the set: 1) the value closest to the value obtained by the above calculation, 2) the value that is equal to or smaller than the value obtained by the above calculation and closest to the value obtained by the above calculation, or 3) the value that is equal to or larger than the value obtained by the above calculation and closest to the value obtained by the above calculation.

[0477] Based on this proposal, the terminal can operate, for example, as follows:

[0478] The terminal receives information from the base station about resources for which the cell operates in HD and / or resources for which the cell operates in FD.

[0479] The terminal receives a PUSCH transmission schedule from the base station. At this time, the terminal receives a value of repetition count 1, which is the repetition count applied to the PUSCH transmission, from the base station through RRC and / or DCI signaling.

[0480] At this time, the terminal calculates the value of the repetition count 2, which is the repetition count applied to PUSCH transmission as described above. To this end, the terminal may additionally receive the values ​​of alpha and / or beta from the base station through RRC, MAC-CE, and / or DCI signaling.

[0481] The terminal transmits the scheduled PUSCH to the base station. At this time, if the PUSCH transmission resource type being transmitted is an HD resource, the PUSCH is repeatedly transmitted as many times as the repetition count 1. Alternatively, if the PUSCH transmission resource type being transmitted is an FD resource, the PUSCH is repeatedly transmitted as many times as the repetition count 2.

[0482] The terminal determines whether the PUSCH transmission resource type is an HD resource or an FD resource.<PUSCH 전송의 자원 타입을 판단하는 방법> It can be judged based on the contents of the proposal.

[0483] Based on this proposal, a base station could operate, for example, as follows:

[0484] The base station sets / provides information to the terminal about the resources for which the cell operates as HD and / or as FD.

[0485] The base station schedules PUSCH transmission to the terminal. At this time, the base station indicates to the terminal the value of repetition count 1, which is the number of repetitions applied to the PUSCH transmission, through RRC and / or DCI signaling.

[0486] At this time, the base station may instruct the terminal to calculate the value of alpha and / or beta required for the repetition number 2 through RRC, MAC-CE, and / or DCI signaling.

[0487] The base station receives the scheduled PUSCH from the terminal. At this time, if the PUSCH transmission resource type is an HD resource, it is determined that the PUSCH is repeatedly transmitted as many times as the repetition count 1. Alternatively, if the PUSCH transmission resource type is an FD resource, it is determined that the PUSCH is repeatedly transmitted as many times as the repetition count 2.

[0488] The base station determines whether the PUSCH transmission resource type is an HD resource or an FD resource.<PUSCH 전송의 자원 타입을 판단하는 방법> It can be judged based on the contents of the proposal.

[0489] Proposal C. A method for calculating the third iteration count based on the iteration count applied to HD resources and FD resources.

[0490] The terminal can determine two repetition counts for PUSCH transmission, repetition count 1 and repetition count 2, as in the aforementioned proposal A and / or proposal B. Based on these two repetition counts, the terminal can determine the repetition count value (i.e., repetition count) to actually apply to PUSCH transmission by using a specific rule / formula.

[0491] Specifically, the number of repetitions can be determined / judged as follows:

[0492] Option 1.

[0493] The number of repetitions is 'number of repetitions 1 x R HD + Number of repetitions 2 x R FD ' can be calculated as follows. That is, when the terminal determines two repetition counts for PUSCH transmission, i.e. repetition count 1 and repetition count 2, as in the above proposal A and / or proposal B, the repetition count applied to PUSCH transmission is 'repetition count 1 x R HD + Number of repetitions 2 x R FD It can be judged to be the same as '.

[0494] Additionally, to ensure that the number of repetitions is an integer, the number of repetitions may be equal to the value obtained by applying the floor function or ceil function to the value obtained by the above formula.

[0495] Additionally, after calculating the number of repetitions in the above manner, the actual number of repetitions can be included in a set of specific candidate values. For example, the actual number of repetitions can have a value included in a set such as {1, 2, 3, 4, 7, 8, 12, 16, 20, 24, 28, 32} or {1, 2, 3, 4, 7, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64}. If the number of repetitions is calculated by the above formula, but the value is not included in the set of candidate values ​​that the actual number of repetitions can have, the value of the actual number of repetitions can be determined / judged as 1) the value closest to the value obtained by the above calculation, 2) the value that is equal to or smaller than the value obtained by the above calculation and closest to the value obtained by the above calculation, or 3) the value that is equal to or larger than the value obtained by the above calculation and closest to the value obtained by the above calculation.

[0496] Based on this proposal, the terminal can operate, for example, as follows:

[0497] The terminal receives information from the base station about resources for which the cell operates in HD and / or resources for which the cell operates in FD.

[0498] The terminal receives a PUSCH transmission schedule from the base station. At this time, the terminal determines the repetition count, which is the number of repetitions applied to the PUSCH transmission. To this end, the terminal can receive, calculate, or determine the information necessary to determine the repetition count from the base station.

[0499] The terminal can be instructed or calculate / determine a value corresponding to repetition number 1 from the base station. The terminal can be instructed or calculate / determine a value corresponding to repetition number 2 from the base station.

[0500] The terminal is R HD and / or x R FD The value can be calculated / judged.

[0501] The terminal transmits the scheduled PUSCH to the base station. At this time, the terminal repeatedly transmits the PUSCH as many times as the above repetition number.

[0502] Based on this proposal, a base station could operate, for example, as follows:

[0503] The base station sets information to the terminal about the resources for which the cell operates as HD and / or as FD.

[0504] The base station schedules PUSCH transmission to the terminal. At this time, the base station may provide / instruct the terminal with the information necessary to determine the value of the repetition count, which is the number of repetitions applied to the PUSCH transmission.

[0505] The base station receives the scheduled PUSCH from the terminal. At this time, it determines that the PUSCH is repeatedly transmitted by the terminal as many times as the number of repetitions mentioned above.

[0506] <PUSCH 전송의 자원 타입을 판단하는 방법>

[0507] In the case of the above-described proposals A and B, depending on whether the PUSCH transmission resource type is an HD resource or an FD resource, the terminal performs repeated transmission of the PUSCH by applying one of the two values ​​of repetition count 1 and repetition count 2 determined by the terminal.

[0508] In this section, we propose a method for determining the type of PUSCH transmission resource (HD resource or FD resource) assumed by a terminal to perform PUSCH transmission.

[0509] The terminal can determine the resource type on which transmission of the PUSCH scheduled from the base station is performed as follows.

[0510] Alt 1. The terminal can receive information about the resource type on which PUSCH transmission is performed from the base station through RRC, MAC-CE, and / or DCI signaling.

[0511] Alt 2. When the first slot resource in which PUSCH transmission is performed is slot k, the terminal can determine the resource type of slot k as the resource type in which PUSCH transmission is performed.

[0512] Considering that the resource type may be different for each symbol resource within a slot, when the terminal designates the first slot resource in which PUSCH transmission is performed as slot k and the first symbol among the symbol resources allocated as symbol resources in which PUSCH transmission is performed as symbol l, the resource type of symbol l within slot k can be determined as the resource type in which PUSCH transmission is performed.

[0513] <PUSCH 반복 횟수의 판단 동작 예시>

[0514] Using the above, the terminal can determine the number of repetitions to be applied to the PUSCH transmission as follows.

[0515] The terminal can determine the number of repetitions applied to PUSCH transmission differently depending on the type of resource through which the PUSCH is transmitted.

[0516] For example, the terminal is<PUSCH 전송의 자원 타입을 판단하는 방법> The PUSCH transmission resource type can be determined using the method proposed in . If the PUSCH transmission resource type is determined to be an HD resource, the terminal transmits the PUSCH by repeating the PUSCH as many times as the repetition count of 1, and if the PUSCH transmission resource type is determined to be an FD resource, the terminal can transmit the PUSCH by repeating the PUSCH as many times as the repetition count of 2.

[0517] The terminal determines that the PUSCH is (repeatedly) transmitted using a resource having the resource type determined as above, and can perform PUSCH transmission.

[0518] In this case, the terminal can transmit the corresponding PUSCH only through resources having the resource type determined as described above. In other words, the resources through which the PUSCH transmitted by the terminal is transmitted can only be composed of resources having the resource type determined as described above.

[0519] Alternatively, the terminal may actually perform PUSCH transmission regardless of the resource type, but may perform PUSCH transmission assuming that the resource to which the PUSCH is transmitted has the resource type determined as described above.

[0520] The terminal can determine the number of repetitions applied to PUSCH transmission differently depending on the configuration of the resource through which the PUSCH is transmitted.

[0521] For example, if the resource through which PUSCH is (repeatedly) transmitted consists of HD resources or if the UE is instructed to (repeatedly) transmit PUSCH using HD resources, the UE<PUSCH 전송의 반복 횟수를 판단하는 방법> Among the methods proposed in ', the number of repetitions applied to PUSCH transmission can be determined differently using Proposal A and / or Proposal B. In this case, the terminal can transmit the PUSCH by repeating the PUSCH as many times as the number of repetitions 1.

[0522] As another example, if the resource through which PUSCH is (repeatedly) transmitted consists of FD resources or if the UE is instructed to (repeatedly) transmit PUSCH using FD resources, the UE may<PUSCH 전송의 반복 횟수를 판단하는 방법> Among the methods proposed in ', the number of repetitions applied to PUSCH transmission can be determined differently using Proposal A and / or Proposal B. In this case, the terminal can transmit the PUSCH by repeating the PUSCH as many times as the number of repetitions 2.

[0523] As another example, if the resources through which PUSCH is (repeatedly) transmitted are configured across HD resources and FD resources, or if the UE is instructed to (repeatedly) transmit PUSCH using both HD and FD resources, the UE may use the '<PUSCH 전송의 반복 횟수를 판단하는 방법> Among the methods proposed in, the number of repetitions applied to PUSCH transmission can be determined differently using proposal C. In this case, the terminal can determine the value of the number of repetitions based on repetition counts 1 and 2, and transmit the PUSCH by repeating the PUSCH as many times as the number of repetitions.

[0524] or the above '<PUSCH 전송의 반복 횟수를 판단하는 방법> Among the methods proposed in ', the number of repetitions applied to PUSCH transmission can be determined as either number of repetitions 1 or number of repetitions 2 using proposal A and / or proposal B. In this case, the terminal<PUSCH 전송의 자원 타입을 판단하는 방법> The PUSCH transmission resource type can be determined using the method proposed in . That is, if the PUSCH transmission resource type is determined to be an HD resource, the terminal can repeatedly transmit the PUSCH a number of times equal to the repetition count of 1, and if the PUSCH transmission resource type is determined to be an FD resource, the terminal can repeatedly transmit the PUSCH a number of times equal to the repetition count of 2.

[0525] Transmitting PUSCH using resources of different types (HD resources and FD resources) together may require different PUSCH transmission-related operations (e.g., uplink transmission power, beam direction, etc.) depending on the resource type, which may increase complexity from both the UE and the base station perspective. Accordingly, the resources that UEs can use to transmit PUSCH can be configured differently depending on the UE's capabilities.

[0526] For example, depending on the terminal's capabilities, the terminal may perform PUSCH transmission using only one type of resource, i.e., only HD resources or FD resources. Alternatively, the terminal may perform PUSCH transmission using resources of different types, i.e., both HD resources and FD resources.

[0527] Taking this into account, the terminal can report this capability information to the base station using signaling such as RRC. That is, the terminal can report to the base station information on whether it can perform PUSCH transmission using only one type of resource (i.e., using only HD resources or FD resources) or whether it can perform PUSCH transmission using resources of different types together (i.e., using both HD resources and FD resources).

[0528] The contents of the present disclosure apply to transmission of CG-PUSCH, but may not apply to transmission of DG-PUSCH. This is because, while it is easy for a base station to dynamically indicate the number of repetitions according to the resource type in the case of DG-PUSCH, this may not be possible in the case of CG-PUSCH.

[0529] Alternatively, the contents of the present disclosure may be applied when the number of repetitions (i.e., 'numberOfRepetitions') applied to PUSCH is semi-statically indicated by RRC signaling. The contents of the present disclosure may not be applied when the number of repetitions (i.e., 'numberOfRepetitions') applied to PUSCH is dynamically indicated by DCI signaling. This is because, if the base station cannot dynamically indicate the number of repetitions, it is difficult to appropriately indicate the number of repetitions according to the resource type.

[0530] Additionally, the terminal may apply different methods for determining the number of repetitions of PUSCH transmissions for CG-PUSCH transmissions and DG-PUSCH transmissions.

[0531] Figure 22 illustrates a wireless device applicable to the present specification.

[0532] Referring to FIG. 22, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).

[0533] A first wireless device (100) includes at least one processor (102) and at least one memory (104), and may further include at least one transceiver (106) and / or at least one antenna (108). The at least one processor (102, hereinafter simply referred to as a processor) controls at least one memory (104, hereinafter simply referred to as a memory) and / or at least one transceiver (106, hereinafter simply referred to as a transceiver or a transceiver), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). In addition, the processor (102) may receive a wireless signal including second information / signal through the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive a wireless signal through one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit.In this specification, wireless device may also mean a communication modem / circuit / chip.

[0534] The processor (102) determines the number of times (K) of PUSCH repetition transmission and transmits the PUSCH repeatedly K times. At this time, the K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is determined based on at least one of the following. The specific operation is described with reference to FIGS. 18 to 21.

[0535] A second wireless device (200) includes at least one processor (202), at least one memory (204), and may further include at least one transceiver (206) and / or at least one antenna (208). The processor (202) controls the memory (204) and / or the transceiver (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signal, and then transmit a wireless signal including the third information / signal via the transceiver (206). In addition, the processor (202) may receive a wireless signal including fourth information / signal via the transceiver (206), and then store information obtained from signal processing of the fourth information / signal in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In this specification, a wireless device may also mean a communication modem / circuit / chip.

[0536] The processor (202) transmits downlink control information to a terminal and repeatedly receives a PUSCH (physical uplink shared channel) from the terminal K times. At this time, the K is determined based on at least one of a ratio (RFD) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission of the terminal and a ratio (RHD) of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission. The specific operation has been described with reference to FIGS. 18 to 21.

[0537] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0538] The one or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. The one or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in the one or more processors (102, 202). The one or more processors (102, 202) may also be implemented by at least one computer-readable medium (CRM) containing instructions based on being executed by at least one processor.

[0539] That is, at least one computer-readable medium (CRM) including instructions based on being executed by at least one processor determines the number of times (K) of PUSCH repetition transmission and transmits the PUSCH repeatedly K times. At this time, K is the ratio (R) of resources operating in full duplex (FD) among resources allocated for the PUSCH transmission. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is determined based on at least one of the following. The specific operation is described with reference to FIGS. 18 to 21.

[0540] The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions. The firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be included in one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0541] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0542] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0543] Fig. 23 illustrates an example of a signal processing module structure. Here, signal processing may be performed in the processor (102, 202) of Fig. 22.

[0544] Referring to FIG. 23, a transmission device (e.g., a processor, a processor and a memory, or a processor and a transceiver) within a terminal or a base station may include a scrambler (301), a modulator (302), a layer mapper (303), an antenna port mapper (304), a resource block mapper (305), and a signal generator (306).

[0545] A transmitting device can transmit one or more codewords. The coded bits within each codeword are scrambled by a scrambler (301) and transmitted over a physical channel. A codeword may also be referred to as a data string and may be equivalent to a transport block, which is a data block provided by the MAC layer.

[0546] The scrambled bits are modulated into complex-valued modulation symbols by a modulator (302). The modulator (302) can modulate the scrambled bits according to a modulation scheme and arrange them into complex-valued modulation symbols that represent positions on a signal constellation. There is no limitation on the modulation scheme, and m-PSK (m-Phase Shift Keying) or m-QAM (m-Quadrature Amplitude Modulation) can be used to modulate the encoded data. The modulator may be referred to as a modulation mapper.

[0547] The complex modulation symbols may be mapped to one or more transmission layers by a layer mapper (303). The complex modulation symbols on each layer may be mapped by an antenna port mapper (304) for transmission on an antenna port.

[0548] The resource block mapper (305) can map the complex modulation symbol for each antenna port to an appropriate resource element within a virtual resource block (VRB) allocated for transmission. The resource block mapper can map the VRB to a physical resource block (PRB) according to an appropriate mapping scheme. The resource block mapper (305) can assign the complex modulation symbol for each antenna port to an appropriate subcarrier and multiplex it according to the user.

[0549] The signal generator (306) can generate a complex-valued time domain OFDM symbol signal by modulating a complex modulation symbol for each antenna port, i.e., an antenna-specific symbol, with a specific modulation method, for example, an Orthogonal Frequency Division Multiplexing (OFDM) method. The signal generator can perform an Inverse Fast Fourier Transform (IFFT) on the antenna-specific symbol, and a Cyclic Prefix (CP) can be inserted into the time domain symbol on which the IFFT is performed. The OFDM symbol is transmitted to a receiving device through each transmitting antenna through digital-to-analog conversion, frequency uplink conversion, etc. The signal generator can include an IFFT module, a CP inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0550] Fig. 24 illustrates another example of the signal processing module structure within a transmission device. Here, signal processing may be performed in a processor of a terminal / base station, such as the processor (102, 202) of Fig. 22.

[0551] Referring to FIG. 24, a transmission device (e.g., a processor, a processor and a memory, or a processor and a transceiver) within a terminal or base station may include a scrambler (401), a modulator (402), a layer mapper (403), a precoder (404), a resource block mapper (405), and a signal generator (406).

[0552] The transmitting device can transmit coded bits within a codeword through a physical channel after scrambling the coded bits within the codeword by a scrambler (401).

[0553] The scrambled bits are modulated into complex modulation symbols by a modulator (402). The modulator can modulate the scrambled bits according to a predetermined modulation scheme and arrange them into complex modulation symbols representing positions on a signal constellation. There is no limitation on the modulation scheme, and pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), or m-QAM (m-Quadrature Amplitude Modulation) can be used to modulate the encoded data.

[0554] The above complex modulation symbol can be mapped to one or more transmission layers by the layer mapper (403).

[0555] The complex modulation symbols on each layer can be precoded by the precoder (404) for transmission on the antenna ports. Here, the precoder may perform precoding after performing transform precoding on the complex modulation symbols. Alternatively, the precoder may perform precoding without performing transform precoding. The precoder (404) may process the complex modulation symbols in a MIMO manner according to multiple transmission antennas to output antenna-specific symbols and distribute the antenna-specific symbols to the corresponding resource block mapper (405). The output z of the precoder (404) can be obtained by multiplying the output y of the layer mapper (403) by the precoding matrix W of NХM. Here, N is the number of antenna ports and M is the number of layers.

[0556] The resource block mapper (405) maps the demodulation modulation symbol for each antenna port to the appropriate resource element within the virtual resource block allocated for transmission.

[0557] The resource block mapper (405) can assign complex modulation symbols to appropriate subcarriers and multiplex them according to the user.

[0558] The signal generator (406) can generate a complex-valued time domain OFDM (Orthogonal Frequency Division Multiplexing) symbol signal by modulating a complex modulation symbol with a specific modulation method, for example, OFDM. The signal generator (406) can perform an Inverse Fast Fourier Transform (IFFT) on an antenna-specific symbol, and a Cyclic Prefix (CP) can be inserted into the time domain symbol on which the IFFT has been performed. The OFDM symbol is transmitted to a receiving device through each transmitting antenna after going through digital-to-analog conversion, frequency upconversion, etc. The signal generator (406) can include an IFFT module, a CP inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0559] The signal processing process of the receiving device may be configured in reverse order of the signal processing process of the transmitter. Specifically, the processor of the receiving device performs decoding and demodulation on a wireless signal received externally through the antenna port(s) of the transceiver. The receiving device may include a plurality of multiple receiving antennas, and each signal received through the receiving antenna is restored to a baseband signal and then multiplexed and MIMO demodulated to be restored to a data sequence originally intended to be transmitted by the transmitting device. The receiving device (1820) may include a signal restorer for restoring the received signal to a baseband signal, a multiplexer for combining and multiplexing the received and processed signals, and a channel demodulator for demodulating the multiplexed signal sequence into a corresponding codeword. The signal restorer, the multiplexer, and the channel demodulator may be configured as an integrated module performing their functions or as individual modules. More specifically, the signal restorer may include an analog-to-digital converter (ADC) that converts an analog signal into a digital signal, a CP remover that removes a CP from the digital signal, an FFT module that applies an FFT (fast Fourier transform) to a signal from which the CP has been removed to output a frequency domain symbol, and a resource element demapper / equalizer that restores the frequency domain symbol to an antenna-specific symbol. The antenna-specific symbol is restored to a transmission layer by a multiplexer, and the transmission layer is restored to a codeword that the transmitter intended to transmit by a channel demodulator.

[0560] FIG. 25 illustrates an example of a wireless communication device according to an implementation example of the present disclosure.

[0561] Referring to FIG. 25, a wireless communication device, for example, a terminal, may include at least one of a processor (2310) such as a digital signal processor (DSP) or a microprocessor, a transceiver (2335), a power management module (2305), an antenna (2340), a battery (2355), a display (2315), a keypad (2320), a global positioning system (GPS) chip (2360), a sensor (2365), a memory (2330), a subscriber identification module (SIM) card (2325), a speaker (2345), and a microphone (2350). There may be a plurality of antennas and processors.

[0562] The processor (2310) can implement the functions, procedures, and methods described in this specification. The processor (2310) of FIG. 25 may be the processor (102, 202) of FIG. 22.

[0563] Memory (2330) is connected to the processor (2310) and stores information related to the processor's operation. The memory may be located internally or externally to the processor and may be connected to the processor via various technologies, such as wired or wireless connections. The memory (2330) of FIG. 25 may be the memory (104, 204) of FIG. 22.

[0564] A user may input various types of information, such as a phone number, using various techniques, such as pressing buttons on a keypad (2320) or activating sound using a microphone (2350). The processor (2310) may receive and process the user's information and perform an appropriate function, such as dialing the entered phone number. In some scenarios, data may be retrieved from a SIM card (2325) or memory (2330) to perform the appropriate function. In some scenarios, the processor (2310) may display various types of information and data on a display (2315) for the user's convenience.

[0565] A transceiver (2335) is coupled to a processor (2310) and transmits and / or receives wireless signals, such as radio frequency (RF) signals. The processor may control the transceiver to initiate communication or transmit wireless signals containing various types of information or data, such as voice communication data. The transceiver includes a transmitter and a receiver for transmitting and receiving wireless signals. An antenna (2340) may facilitate the transmission and reception of wireless signals. In some implementations, upon receiving a wireless signal, the transceiver may forward and convert the signal to a baseband frequency for processing by the processor. The processed signal may be processed by various techniques, such as being converted into audible or readable information for output through a speaker (2345). The transceiver of FIG. 25 may be the transceiver (106, 206) of FIG. 29.

[0566] Although not shown in FIG. 25, various components, such as a camera and a Universal Serial Bus (USB) port, may be additionally included in the terminal. For example, the camera may be connected to the processor (2310).

[0567] Fig. 25 is only one implementation example for a terminal, and the implementation examples are not limited thereto. The terminal does not necessarily have to include all the elements of Fig. 25. That is, some components, such as a keypad (2320), a Global Positioning System (GPS) chip (2360), a sensor (2365), and a SIM card (2325), may not be essential elements, and in this case, may not be included in the terminal.

[0568] Figure 26 illustrates another example of a wireless device.

[0569] According to FIG. 26, the wireless device may include at least one processor (102, 202), at least one memory (104, 204), at least one transceiver (106, 206), and one or more antennas (108, 208).

[0570] The difference between the example of the wireless device described in FIG. 22 and the example of the wireless device in FIG. 26 is that in FIG. 22, the processor (102, 202) and the memory (104, 204) are separated, but in the example of FIG. 26, the memory (104, 204) is included in the processor (102, 202). That is, the processor and the memory may constitute a single chipset.

[0571] Fig. 27 illustrates a communication system (1) applicable to this specification.

[0572] Referring to FIG. 27, a communication system (1) applied to the present specification includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, and can be implemented in the form of HMD (Head-Mounted Device), HUD (Head-Up Display) installed in a vehicle, television, smartphone, computer, wearable device, home appliance, digital signage, vehicle, robot, etc. Mobile devices can include smartphone, smart pad, wearable device (e.g., smart watch, smart glass), computer (e.g., laptop, etc.), etc. Home appliances can include TV, refrigerator, washing machine, etc. IoT devices can include sensors, smart meters, etc. For example, base stations and networks can also be implemented as wireless devices, and a specific wireless device (200a) can act as a base station / network node to other wireless devices.

[0573] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0574] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present specification.

[0575] Meanwhile, NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, an SCS of 15 kHz supports a wide area in traditional cellular bands; an SCS of 30 kHz / 60 kHz supports dense urban areas, lower latency, and wider carrier bandwidth; and an SCS of 60 kHz or higher supports a bandwidth greater than 24.25 GHz to overcome phase noise.

[0576] The NR frequency band can be defined by two types of frequency ranges (FR1, FR2). The numerical values ​​of the frequency ranges can be changed, and for example, the two types of frequency ranges (FR1, FR2) can be as shown in Table 9 below. For convenience of explanation, among the frequency ranges used in the NR system, FR1 can mean the “sub 6 GHz range”, and FR2 can mean the “above 6 GHz range” and can be called millimeter wave (mmW).

[0577] [Table 9]

[0578]

[0579] As described above, the numerical value of the frequency range of the NR system can be changed. For example, FR1 may include a band from 410 MHz to 7125 MHz, as shown in Table 10 below. That is, FR1 may include a frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included within FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, such as for vehicular communications (e.g., autonomous driving).

[0580] [Table 10]

[0581]

[0582] The claims set forth in this specification may be combined in various ways. For example, the technical features of the method claims of this specification may be combined and implemented as a device, and the technical features of the device claims of this specification may be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a method.

Claims

1. In the method, Determine the number of times (K) of PUSCH (physical uplink shared channel) repeated transmissions, The above PUSCH is transmitted repeatedly K times, The above K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is characterized in that it is determined based on at least one of the following.

2. A method characterized in that, in the first paragraph, an upper layer message is received indicating a list including a plurality of entries indicating resources that can be used for transmission of the PUSCH.

3. A method characterized in that, in the second paragraph, downlink control information (DCI) is received including a field indicating a specific entry among a plurality of entries included in the list.

4. In the second paragraph, the method is characterized in that the entry includes at least one of information (k2) indicating the number of slots between the downlink control information reception slot and the PUSCH transmission slot, information (mappingType) indicating the mapping type of the PUSCH, information (startSymbolAndLength) indicating the start symbol and length of the PUSCH, information (startSymbol) indicating the start symbol of the PUSCH, information (length) indicating the length of the PUSCH, information (numberOfRepetitions) indicating the number of repetitions, and information (numberOfSlotsTBoMS) indicating the number of slots allocated for TBoMS (Transport block processing over multiple slots).

5. In the second paragraph, if the entry includes information indicating the number of repetitions (numberOfRepetitions), The above terminal is the value indicated by the above information and the above R HD A method characterized in that K is determined based on the product of the reciprocals of .

6. In the second paragraph, if the entry includes information indicating the number of repetitions (numberOfRepetitions), The above terminal is the value indicated by the above information and the above R HD and the above R FD A method characterized in that the above K is determined based on .

7. In paragraph 1, R FD A method characterized in that the value of K is determined so that the value of K increases as the value of increases.

8. The terminal is, At least one transceiver; At least one memory; and At least one processor operably coupled with said at least one memory and said at least one transceiver, wherein said at least one memory comprises instructions that are executed by said at least one processor to perform operations, The above actions are, An operation to determine the number of times (K) of repeated transmission of PUSCH (physical uplink shared channel). Including an operation of repeatedly transmitting the above PUSCH K times, The above K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is characterized by being determined based on at least one of the following.

9. A terminal characterized in that, in paragraph 8, it receives an upper layer message indicating a list including a plurality of entries indicating resources that can be used for transmission of the PUSCH.

10. A terminal characterized in that, in paragraph 9, it receives downlink control information (DCI) including a field indicating a specific entry among a plurality of entries included in the list.

11. In the 9th paragraph, the terminal is characterized in that the entry includes at least one of information (k2) indicating the number of slots between the downlink control information reception slot and the PUSCH transmission slot, information (mappingType) indicating the mapping type of the PUSCH, information (startSymbolAndLength) indicating the start symbol and length of the PUSCH, information (startSymbol) indicating the start symbol of the PUSCH, information (length) indicating the length of the PUSCH, information (numberOfRepetitions) indicating the number of repetitions, and information (numberOfSlotsTBoMS) indicating the number of slots allocated for TBoMS (Transport block processing over multiple slots).

12. In the 9th paragraph, if the entry includes information indicating the number of repetitions (numberOfRepetitions), The above terminal is the value indicated by the above information and the above R HD A terminal characterized in that K is determined based on the product of the reciprocals of .

13. In the 9th paragraph, if the entry includes information indicating the number of repetitions (numberOfRepetitions), The above terminal is the value indicated by the above information and the above R HD and the above R FD A terminal characterized in that the above K is determined based on .

14. In paragraph 8, R FD A terminal characterized in that the value of K is determined so that the value of K increases as the value of increases.

15. The device, At least one memory; and At least one processor operably coupled to at least one memory, wherein said at least one memory comprises instructions that are executed by said at least one processor to perform operations, The above actions are, An operation to determine the number of times (K) of repeated transmission of PUSCH (physical uplink shared channel). Including an operation of repeatedly transmitting the above PUSCH K times, The above K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) characterized in that it is determined based on at least one of the following.

16. At least one computer readable medium (CRM) containing instructions based on being executed by at least one processor, Determine the number of times (K) of PUSCH (physical uplink shared channel) repeated transmissions, The above PUSCH is transmitted repeatedly K times, The above K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is characterized by being determined based on at least one of the following.

17. In the method, The base station transmits downlink control information to the terminal, The base station repeatedly receives a PUSCH (physical uplink shared channel) from the terminal K times, The above K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission of the terminal. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is characterized in that it is determined based on at least one of the following.

18. The base station, At least one transceiver; At least one memory; and At least one processor operably coupled with said at least one memory and said at least one transceiver, wherein said at least one memory comprises instructions that are executed by said at least one processor to perform operations, The above actions are, An action to transmit downlink control information to a terminal, Including an operation of repeatedly receiving a PUSCH (physical uplink shared channel) from the terminal K times, The above K is the ratio (R) of resources operating in full duplex (FD) among the resources allocated for the PUSCH transmission of the terminal. FD ) and the ratio of resources operating in half duplex (HD) among the resources allocated for the PUSCH transmission (R HD ) is characterized by being determined based on at least one of the following.

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