Method for performing communication and device therefor in wireless communication system

Abstract

According to various embodiments, disclosed are a method by which a first base station performs communication and a device therefor in a wireless communication system. Disclosed are a method and a device therefor, the method comprising the steps of: transmitting, to a second base station, first intended TDD DL-UL configuration information related to a first base station; and receiving, from the second base station, second intended TDD DL-UL configuration information related to the second base station.

Description

Method for performing communication in a wireless communication system and device therefor

[0001] A method for a base station to perform SBFD operation in a wireless communication system and a device therefor are provided.

[0002] Wireless communication systems are multiple access systems that support communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and multi-carrier frequency division multiple access (MC-FDMA).

[0003] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing radio access technology (RAT) is emerging. Furthermore, massive Machine Type Communications (MTC), which connects numerous devices and objects to provide various services anytime, anywhere, is also a key issue to be considered in next-generation communication. 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 into account enhanced mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed. For convenience, these technologies are referred to as new RAT or NR in the present invention.

[0004] The technical challenge is to provide a more accurate and efficient way for a base station to perform SBFD-related operations.

[0005] The technical challenges are not limited to the technical challenges mentioned above, and other technical challenges not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0006] A method for performing communication by a first base station in a wireless communication system according to one aspect comprises the steps of: transmitting first intended TDD (Time Division Duplexing) DL (downlink)-UL (uplink) configuration information related to the first base station to a second base station; and receiving second intended TDD DL-UL configuration information related to the second base station from the second base station, wherein the second intended TDD DL-UL configuration information may include FD (full duplex) slot configuration information for a slot in which an operation of SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex) is performed.

[0007] Alternatively, the FD slot setting information is characterized in that it includes information indicating whether all symbols included in the corresponding slot for each slot index are composed of UL symbols, DL symbols, or FD symbols.

[0008] Alternatively, the FD slot configuration information is characterized in that it further includes information on a specific slot in which a symbol configuration for the number of DL symbols and the number of FD symbols, or the number of UL symbols and the number of FD symbols, is defined.

[0009] Alternatively, the first base station is characterized in that it performs an operation related to mitigation of CLI (Cross Link Interference) based on the FD slot setting information.

[0010] Alternatively, the second intended TDD DL-UL configuration information is characterized in that it further includes frequency resource information related to a start frequency and bandwidth for specifying a frequency band in which the FD is performed.

[0011] Alternatively, the frequency resource information is characterized in that it further includes configuration information for a resource block set related to the frequency band.

[0012] Alternatively, the second intended TDD DL-UL configuration information is characterized in that it further includes configuration information for a protected HD slot in which only HD (Half duplex) operation is performed.

[0013] Alternatively, the first base station is characterized in that it specifies a time period during which it is not necessary to perform an operation related to mitigation of CLI (Cross Link Interference) based on configuration information for the protection HD slot.

[0014] Alternatively, the slot in which the operation of the SBFD is performed is characterized in that it is a time period in which transmission of a DL signal in a first sub-band and reception of a UL signal in a second sub-band are performed simultaneously.

[0015] Alternatively, the first intended TDD DL-UL configuration information and the second intended TDD DL-UL configuration information are characterized in that they are received via an Xn interface or an F1 interface.

[0016] According to another aspect, a non-transitory computer-readable storage medium having recorded thereon commands for performing a method for performing communication by the first base station described above may be provided.

[0017] According to another aspect, a first base station may be provided that performs the method for performing the above-described communication.

[0018] According to another aspect, a processing device may be provided for controlling a first base station performing the above-described communication.

[0019] In another aspect, a method for a second base station to perform communication in a wireless communication system includes the steps of: receiving first intended TDD (Time Division Duplexing) DL (downlink)-UL (uplink) configuration information related to a first base station; and transmitting second intended TDD DL-UL configuration information related to a second base station to the first base station, wherein based on whether the second base station supports an operation of a sub-band full duplex (SBFD) or a spectrum sharing full duplex (SSFD), the second intended TDD DL-UL configuration information may include FD (full duplex) slot configuration information for a slot in which an operation of the SBFD or the SSFD is performed.

[0020] According to another aspect, a second base station may be provided that performs the method for performing the communication described above.

[0021] Various embodiments enable a base station to perform operations related to SBFD more accurately and efficiently.

[0022] The effects that can be obtained in various embodiments are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0023] The drawings attached to this specification are intended to provide an understanding of the present invention, illustrate various embodiments of the present invention, and together with the description of the specification serve to explain the principles of the present invention.

[0024] Figure 1 shows the structure of an LTE system.

[0025] Figure 2 shows the structure of the NR system.

[0026] Figure 3 shows the structure of a radio frame of NR.

[0027] Figure 4 shows the slot structure of an NR frame.

[0028] FIG. 5 is a diagram for explaining physical channels that can be used in various embodiments and a signal transmission method using the same.

[0029] Figure 6 illustrates a process in which a terminal transmits ACK / NACK via PUSCH.

[0030] Figure 7 shows an example of a CSI-related procedure.

[0031] Figure 8 is a diagram for explaining a method of performing full duplex operation in an NR system.

[0032] FIG. 9 and FIG. 10 are diagrams for explaining SBFD (sub-band full duplex) and SFFD (single frequency full duplex) operations.

[0033] FIG. 11 is a diagram illustrating a method for a first base station to perform operations related to relaxation of CLI based on intended TDD DL-UL configuration information received from a second base station.

[0034] FIG. 12 is a diagram illustrating a method for a second base station to exchange intended TDD DL-UL configuration information with a first base station.

[0035] Figure 13 illustrates a flexible network topology to which some examples of this specification may be applied.

[0036] Figure 14 illustrates a communication system applied to the present invention.

[0037] Figure 15 illustrates a wireless device applicable to the present invention.

[0038] Fig. 16 shows another example of a wireless device applied to the present invention.

[0039] A wireless communication system is a multiple access system that supports communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and multi-carrier frequency division multiple access (MC-FDMA).

[0040] Sidelink refers to a communication method that establishes a direct link between user equipment (UE), allowing voice or data to be exchanged directly between terminals without going through a base station (BS). Sidelink is being considered as a solution to address the burden on base stations due to rapidly increasing data traffic.

[0041] V2X (vehicle-to-everything) refers to a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure-based objects through wired / wireless communication. V2X can be divided into four types: V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian). V2X communication can be provided through the PC5 interface and / or Uu interface.

[0042] Meanwhile, as more and more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing radio access technology (RAT) is emerging. Accordingly, communication systems that consider services or terminals sensitive to reliability and latency are being discussed. Next-generation wireless access technologies that consider improved mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) can be called new radio access technology (RAT) or new radio (NR). NR can also support V2X (vehicle-to-everything) communication.

[0043] The following technologies can be used in various wireless communication systems, such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (evolved UTRA). IEEE 802.16m is an evolution of IEEE 802.16e, providing backward compatibility with systems based on IEEE 802.16e. UTRA is part of UMTS (universal mobile telecommunications system). 3GPP (3rd generation partnership project) LTE (long term evolution) is a part of E-UMTS (evolved UMTS) that uses E-UTRA (evolved-UMTS terrestrial radio access), employing OFDMA in the downlink and SC-FDMA in the uplink.LTE-A (advanced) is an evolution of 3GPP LTE.

[0044] 5G NR, the successor to LTE-A, is a new clean-slate mobile communications system featuring high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

[0045] For clarity, the description will focus on LTE-A or 5G NR, but the technical ideas of the embodiment(s) are not limited thereto.

[0046] Figure 1 illustrates the architecture of an applicable LTE system. This may be referred to as an Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN) or a Long Term Evolution (LTE) / LTE-A system.

[0047] Referring to FIG. 1, the E-UTRAN includes a base station (20; BS) that provides a control plane and a user plane to a terminal (10). The terminal (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, etc. The base station (20) refers to a fixed station that communicates with the terminal (10), and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, etc.

[0048] 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.

[0049] 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.

[0050] 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 an information transfer service using a physical channel, 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.

[0051] Figure 2 shows the structure of the NR system.

[0052] Referring to FIG. 2, the NG-RAN may include a gNB and / or an eNB that provides user plane and control plane protocol termination to the UE. FIG. 7 illustrates a case where only a gNB is included. The gNB and eNB are connected to each other via an Xn interface. The gNB and eNB 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.

[0053] Figure 3 shows the structure of a radio frame of NR.

[0054] Referring to FIG. 3, radio frames can be used for uplink and downlink transmission in NR. A radio frame has a length of 10 ms and can be defined as two 5 ms half-frames (Half-Frames, HF). A half-frame can include five 1 ms sub-frames (Subframes, SF). A sub-frame can be divided into one or more slots, and the number of slots within a sub-frame can be determined by the Subcarrier Spacing (SCS). Each slot can include 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP).

[0055] When normal CP is used, each slot can contain 14 symbols. When extended CP is used, each slot can contain 12 symbols. Here, the symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA (Single Carrier - FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0056] Table 1 below shows the number of symbols per slot ((N)) depending on the SCS setting (u) when normal CP is used. slot symb ), number of slots per frame ((N frame,u slot ) and the number of slots per subframe ((N subframe,u slot ) is an example.

[0057] SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot 15KHz (u=0)1410130KHz (u=1)1420260KHz (u=2)14404120KHz (u=3)14808240KHz (u=4)1416016

[0058] Table 2 illustrates the number of symbols per slot, the number of slots per frame, and the number of slots per subframe according to SCS when extended CP is used.

[0059] SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot 60KHz (u=2)12404

[0060] In an NR system, OFDM(A) numerologies (e.g., SCS, CP length, etc.) can be configured differently across multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., subframe, slot, or TTI) (conveniently referred to as a TU (Time Unit)) consisting of the same number of symbols can be configured differently across the merged cells. In NR, multiple numerologies or SCSs can be supported to support various 5G services. For example, when the SCS is 15 kHz, a wide area in traditional cellular bands can be supported, and when the SCS is 30 kHz / 60 kHz, dense-urban, lower latency, and wider carrier bandwidth can be supported. When the SCS is 60 kHz or higher, bandwidths greater than 24.25 GHz may be supported to overcome phase noise.

[0061] The NR frequency band can be defined by two types of frequency ranges. The two types of frequency ranges can be FR1 and FR2. The numerical values ​​of the frequency ranges can be changed, and for example, the two types of frequency ranges can be as shown in Table 3 below. 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).

[0062] Frequency Range designationCorresponding frequency rangeSubcarrier Spacing (SCS)FR1450MHz - 6000MHz15, 30, 60kHzFR224250MHz - 52600MHz60, 120, 240kHz

[0063] 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 4 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).

[0064] Frequency Range designationCorresponding frequency rangeSubcarrier Spacing (SCS)FR1410MHz - 7125MHz15, 30, 60kHzFR224250MHz - 52600MHz60, 120, 240kHz

[0065] Figure 4 shows the slot structure of an NR frame.

[0066] Referring to Figure 4, a slot includes multiple symbols in the time domain. For example, in the case of a normal CP, one slot may include 14 symbols, but in the case of an extended CP, one slot may include 12 symbols. Alternatively, in the case of a normal CP, one slot may include 7 symbols, but in the case of an extended CP, one slot may include 6 symbols.

[0067] A carrier includes multiple subcarriers in the frequency domain. An RB (Resource Block) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) can be defined as multiple consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain, and can correspond to one numerology (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication can be performed through activated BWPs. Each element can be referred to as a Resource Element (RE) in the resource grid, and one complex symbol can be mapped to it.

[0068] Meanwhile, the wireless interface between terminals or between terminals and a network may be composed of an L1 layer, an L2 layer, and an L3 layer. In various embodiments of the present disclosure, the L1 layer may refer to a physical layer. Furthermore, for example, the L2 layer may refer to at least one of a MAC layer, an RLC layer, a PDCP layer, and an SDAP layer. Furthermore, for example, the L3 layer may refer to an RRC layer.

[0069] Bandwidth part (BWP)

[0070] The NR system can support up to 400 MHz per component carrier (CC). If a terminal operating in such a wideband CC always operates with the RF on for the entire CC, the terminal battery consumption may increase. Alternatively, when considering multiple use cases (e.g., eMBB, URLLC, MMTC, V2X, etc.) operating within a wideband CC, different numerologies (e.g., sub-carrier spacing) may be supported for each frequency band within the CC. Alternatively, each terminal may have different capabilities for maximum bandwidth. Considering this, the base station can instruct the terminal to operate only in a portion of the bandwidth rather than the entire bandwidth of the wideband CC, and this portion of bandwidth is conveniently defined as a bandwidth part (BWP). A BWP can be composed of consecutive resource blocks (RBs) on the frequency axis and can correspond to a single numerology (e.g., sub-carrier spacing, CP length, slot / mini-slot duration).

[0071] Meanwhile, the base station can set multiple BWPs even within a single CC configured for the UE. For example, in the PDCCH monitoring slot, a BWP occupying a relatively small frequency range can be set, and the PDSCH indicated by the PDCCH can be scheduled on a larger BWP. Alternatively, if UEs are concentrated in a specific BWP, some UEs can be set to a different BWP for load balancing. Alternatively, considering frequency domain inter-cell interference cancellation between neighboring cells, a portion of the spectrum in the middle of the total bandwidth can be excluded, and both BWPs can be set within the same slot. That is, the base station can configure at least one DL / UL BWP for a terminal associated with a wideband CC, and can activate at least one DL / UL BWP among the configured DL / UL BWP(s) at a specific point in time (by L1 signaling or MAC CE or RRC signaling, etc.), and switching to another configured DL / UL BWP can be indicated (by L1 signaling or MAC CE or RRC signaling, etc.), or switching to a predetermined DL / UL BWP when the timer value expires based on a timer. At this time, the activated DL / UL BWP is defined as the active DL / UL BWP. However, the terminal may not receive the configuration for the DL / UL BWP in situations such as when the terminal is in the initial access process or before the RRC connection is set up. In such situations, the DL / UL BWP assumed by the terminal is defined as the initial active DL / UL BWP.

[0072] FIG. 5 is a diagram for explaining physical channels that can be used in various embodiments and a signal transmission method using the same.

[0073] Referring to FIG. 5, a terminal that is powered on again after being powered off or that has newly entered a cell performs an initial cell search operation, such as synchronizing with the base station, in step S101. To this end, the terminal receives a Synchronization Signal Block (SSB) from the base station. The SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). Based on the PSS / SSS, the terminal synchronizes with the base station and obtains information such as a cell ID (cell identity). In addition, the terminal can obtain broadcast information within the cell based on the PBCH. Meanwhile, the terminal can check the downlink channel status by receiving a Downlink Reference Signal (DL RS) during the initial cell search phase.

[0074] A terminal that has completed initial cell search can obtain more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) based on physical downlink control channel information (S12).

[0075] Thereafter, the terminal may perform a random access procedure to complete connection to the base station (S13 to S16). To this end, the terminal may transmit a preamble through a physical random access channel (PRACH) (S13) and receive a random access response (RAR) for the preamble through a physical downlink control channel and a corresponding physical downlink shared channel (S14). The terminal may transmit a physical uplink shared channel (PUSCH) using scheduling information in the RAR (S15) and perform a contention resolution procedure such as receiving a physical downlink control channel signal and a corresponding physical downlink shared channel signal (S16).

[0076] Meanwhile, in addition to the random access process performed in 4 steps as above (4-step RACH, type-1 random access procedure), when the random access process is performed in 2 steps (2-step RACH, type-2 random access procedure), S13 / S15 may be performed as one operation in which the terminal performs transmission (e.g., transmission operation of message A including PRACH preamble and / or PUSCH), and S14 / S16 may be performed as one operation in which the base station performs transmission (e.g., transmission operation of message B including RAR and / or collision resolution information).

[0077] A terminal that has performed the procedure described above can then perform general uplink / downlink signal transmission procedures, such as receiving a physical downlink control channel signal and / or a physical downlink shared channel signal (S17) and transmitting a physical uplink shared channel (PUSCH: Physical Uplink Shared Channel) signal and / or a physical uplink control channel (PUCCH: Physical Uplink Control Channel) signal (S18).

[0078] Control information transmitted from a terminal to a base station is collectively referred to as uplink control information (UCI). UCI includes information such as HARQ-ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CQI (Channel Quality Indication), PMI (Precoding Matrix Indication), and RI (Rank Indication).

[0079] UCI is typically transmitted periodically over the PUCCH, but can also be transmitted over the PUSCH when control information and data must be transmitted simultaneously. Furthermore, terminals can transmit UCI aperiodically over the PUSCH at the request / instruction of the network.

[0080] Figure 6 illustrates a process in which a terminal transmits ACK / NACK via PUSCH.

[0081] Referring to FIG. 6, the terminal can detect a PDCCH in slot #n. Here, the PDCCH includes downlink scheduling information (e.g., DCI formats 1_0, 1_1), and the PDCCH indicates a DL assignment-to-PDSCH offset (K0) and a PDSCH-HARQ-ACK reporting offset (K1). For example, DCI formats 1_0, 1_1 can include the following information:

[0082] - Frequency domain resource assignment: Indicates the set of RBs allocated to the PDSCH.

[0083] - Time domain resource assignment: K0 (e.g., slot offset), indicates the starting position of the PDSCH within slot #n+K0 (e.g., OFDM symbol index), and the length of the PDSCH (e.g., number of OFDM symbols).

[0084] - PDSCH-to-HARQ_feedback timing indicator: Indicates K1

[0085] - HARQ process number (4 bits): Indicates the HARQ process ID (Identity) for data (e.g., PDSCH, TB)

[0086] - PUCCH resource indicator (PRI): Indicates the PUCCH resource to be used for UCI transmission among multiple PUCCH resources within the PUCCH resource set.

[0087] Afterwards, the terminal receives PDSCH from slot #(n+K0) according to the scheduling information of slot #n, and when reception of PDSCH is finished in slot #n1 (where, n+K0≤n1), UCI can be transmitted through PUCCH in slot #(n1+K1). Here, UCI may include HARQ-ACK response for PDSCH. In Fig. 6, for convenience, it is assumed that SCS for PDSCH and SCS for PUCCH are the same and slot# n1 = slot# n+K0, but the present invention is not limited thereto. If the SCSs are different, K1 can be indicated / interpreted based on the SCS of PUCCH.

[0088] When the PDSCH is configured to transmit at most 1 TB, the HARQ-ACK response may consist of 1 bit. When the PDSCH is configured to transmit at most 2 TB, the HARQ-ACK response may consist of 2 bits if spatial bundling is not configured, and may consist of 1 bit if spatial bundling is configured. When the HARQ-ACK transmission timing for multiple PDSCHs is designated as slot #(n+K1), the UCI transmitted in slot #(n+K1) includes HARQ-ACK responses for multiple PDSCHs.

[0089] Whether a UE should perform spatial bundling for a HARQ-ACK response can be configured (e.g., via RRC / higher layer signaling) for each cell group. For example, spatial bundling can be individually configured for each HARQ-ACK response transmitted over the PUCCH and / or each HARQ-ACK response transmitted over the PUSCH.

[0090] Spatial bundling can be supported when the maximum number of TBs (or codewords) that can be received at a time (or scheduled via 1 DCI) in the serving cell is 2 (or more than 2) (e.g., when the upper layer parameter maxNrofCodeWordsScheduledByDCI corresponds to 2-TB). Meanwhile, more than 4 layers can be used for 2-TB transmission, and up to 4 layers can be used for 1-TB transmission. Consequently, when spatial bundling is configured for the cell group, spatial bundling can be performed for serving cells that can schedule more than 4 layers among the serving cells in the cell group. On the serving cell, a UE that wishes to transmit a HARQ-ACK response via spatial bundling can generate the HARQ-ACK response by performing a (bit-wise) logical AND operation on the A / N bits for multiple TBs.

[0091] For example, assuming that a terminal receives a DCI scheduling 2 TB and receives 2 TB via PDSCH based on the DCI, the terminal performing spatial bundling can generate a single A / N bit by logically ANDing the first A / N bit for the first TB and the second A / N bit for the second TB. Consequently, if both the first TB and the second TB are ACK, the terminal reports the ACK bit value to the base station, and if either TB is NACK, the terminal reports the NACK bit value to the base station.

[0092] For example, if only 1-TB is actually scheduled on a serving cell configured to receive 2-TB, the terminal can generate a single A / N bit by logically ANDing the A / N bit for the 1-TB with bit value 1. Consequently, the terminal reports the A / N bit for the 1-TB to the base station as is.

[0093] A base station / terminal has multiple parallel DL HARQ processes for DL ​​transmission. These multiple parallel HARQ processes allow DL transmissions to be performed continuously while waiting for HARQ feedback regarding the success or failure of the previous DL transmission. Each HARQ process is associated with a HARQ buffer in the MAC (Medium Access Control) layer. Each DL HARQ process manages state variables such as the number of transmissions of MAC Physical Data Blocks (PDUs) in the buffer, HARQ feedback for MAC PDUs in the buffer, and the current redundancy version. Each HARQ process is identified by a HARQ process ID.

[0094] Below, the PUSCH transmission process is described.

[0095] The terminal can detect the PDCCH in slot #n. Here, the PDCCH includes uplink scheduling information (e.g., DCI formats 0_0 and 0_1). DCI formats 0_0 and 0_1 can include the following information.

[0096] - Frequency domain resource assignment: Indicates the set of RBs allocated to PUSCH.

[0097] - Time domain resource assignment: Slot offset K2 indicates the starting position (e.g., symbol index) and length (e.g., number of OFDM symbols) of the PUSCH within the slot. The starting symbol and length can be indicated through SLIV (Start and Length Indicator Value) or can be indicated separately.

[0098] Thereafter, the terminal can transmit a PUSCH in slot #(n+K2) according to the scheduling information of slot #n. Here, the PUSCH includes a UL-SCH TB.

[0099] CSI-related actions

[0100] Figure 7 shows an example of a CSI-related procedure.

[0101] The terminal receives configuration information related to CSI from the base station via RRC signaling (710). The configuration information related to CSI may include at least one of CSI-IM (interference management) resource-related information, CSI measurement configuration-related information, CSI resource configuration-related information, CSI-RS resource-related information, or CSI report configuration-related information.

[0102] - CSI-IM resources can be configured for interference measurement (IM) of the terminal. In the time domain, the CSI-IM resource set can be configured periodically, semi-persistently, or aperiodicly. The CSI-IM resources can be configured as Zero Power (ZP)-CSI-RS for the terminal. The ZP-CSI-RS can be configured separately from the Non-Zero Power (NZP)-CSI-RS.

[0103] - The UE may assume that the CSI-RS resource(s) for channel measurement configured for one CSI reporting and the CSI-IM / NZP CSI-RS resource(s) for interference measurement (when NZP CSI-RS resource(s) are used for interference measurement) are in a QCL relationship with respect to 'QCL-TypeD' per resource.

[0104] - The CSI resource configuration may include at least one of a CSI-IM resource for interference measurement, an NZP CSI-RS resource for interference measurement, and an NZP CSI-RS resource for channel measurement. The CMR (channel measurement resource) may be an NZP CSI-RS for CSI acquisition, and the IMR (Interference measurement resource) may be an NZP CSI-RS for CSI-IM and IM.

[0105] - CSI-RS can be configured for one or more terminals. Different CSI-RS configurations may be provided for each terminal, or the same CSI-RS configuration may be provided to multiple terminals. CSI-RS can support up to 32 antenna ports. CSI-RS corresponding to N (N is 1 or greater) antenna ports can be mapped to N RE locations within a time-frequency unit corresponding to one slot and one RB. When N is 2 or greater, N-port CSI-RS can be multiplexed using CDM, FDM, and / or TDM schemes. CSI-RS can be mapped to REs other than REs to which CORESET, DMRS, and SSB are mapped. In the frequency domain, CSI-RS can be configured for the entire bandwidth, a portion of the bandwidth (BWP), or a portion of the bandwidth. CSI-RS may be transmitted in each RB within the bandwidth for which CSI-RS is configured (i.e., density = 1), or in every second RB (e.g., even or odd RB) (i.e., density = 1 / 2). When CSI-RS is used as a Tracking Reference Signal (TRS), a single-port CSI-RS may be mapped on three subcarriers in each resource block (i.e., density = 3). One or more CSI-RS resource sets may be configured for a UE in the time domain. Each CSI-RS resource set may include one or more CSI-RS configurations. Each CSI-RS resource set may be configured periodically, semi-persistently, or aperiodicly.

[0106] - The CSI report configuration may include configurations for feedback type, measurement resources, report type, etc. The NZP-CSI-RS resource set may be used for the CSI report configuration of the corresponding terminal. The NZP-CSI-RS resource set may be associated with CSI-RS or SSB. In addition, multiple periodic NZP-CSI-RS resource sets may be configured as TRS resource sets. (i) The feedback type may include a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a CSI-RS Resource Indicator (CRI), an SSB Resource block Indicator (SSBRI), a Layer Indicator (LI), a Rank Indicator (RI), a Layer 1-Reference Signal Received Strength (RSRP), etc. (ii) Measurement resources may include configurations for downlink signals and / or downlink resources on which the terminal performs measurements to determine feedback information. The measurement resources may be configured as ZP and / or NZP CSI-RS resource sets associated with CSI reporting configurations. The NZP CSI-RS resource set may include a CSI-RS set or an SSB set. For example, L1-RSRP may be measured for a CSI-RS set or an SSB set. (iii) Reporting types may include configurations for a time point at which the terminal performs reporting and an uplink channel, etc. The reporting time point may be configured as periodic, semi-persistent, or aperiodic. Periodic CSI reporting may be transmitted on PUCCH. Semi-persistent CSI reporting may be transmitted on PUCCH or PUSCH based on a MAC CE indicating activation / deactivation. Aperiodic CSI reporting may be indicated by DCI signaling.For example, the CSI request field of an uplink grant may indicate one of several report trigger sizes. Aperiodic CSI reports may be transmitted on the PUSCH.

[0107] The terminal measures CSI based on configuration information related to CSI. CSI measurement may include a procedure of receiving a CSI-RS (720) and computing the received CSI-RS to acquire CSI (730).

[0108] The UE can transmit a CSI report to the base station (740). For the CSI report, the time and frequency resources that the UE can use are controlled by the base station. The CSI (channel state information) can include at least one of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), an SS / PBCH block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), L1-RSRP, and / or L-SINR.

[0109] The time domain behavior of CSI reporting supports periodic, semi-persistent, and aperiodic. i) Periodic CSI reporting is performed on short PUCCH and long PUCCH. The periodicity and slot offset of periodic CSI reporting can be configured by RRC, and refer to the CSI-ReportConfig IE. ii) SP (semi-periodic) CSI reporting is performed on short PUCCH, long PUCCH, or PUSCH. In case of SP CSI on short / long PUCCH, the periodicity and slot offset are configured by RRC, and CSI reporting is activated / deactivated by separate MAC CE / DCI. In case of SP CSI on PUSCH, the periodicity of SP CSI reporting is configured by RRC, but the slot offset is not configured by RRC, and SP CSI reporting is activated / deactivated by DCI (format 0_1). For SP CSI reporting on PUSCH, a separate RNTI (SP-CSI C-RNTI) is used. The initial CSI reporting timing follows the PUSCH time domain allocation value indicated in the DCI, and subsequent CSI reporting timings follow the cycle set by RRC. DCI format 0_1 ​​includes a CSI request field and can activate / deactivate a specific configured SP-CSI trigger state. SP CSI reporting has the same or similar activation / deactivation mechanism as the data transmission mechanism on the SPS PUSCH.iii) Aperiodic CSI reporting is performed on PUSCH and is triggered by DCI. In this case, information related to the triggering of aperiodic CSI reporting can be transmitted / indicated / configured via MAC-CE. For AP CSI with AP CSI-RS, the AP CSI-RS timing is configured by RRC, and the timing for AP CSI reporting is dynamically controlled by DCI.

[0110] CSI codebooks defined in the NR standard (e.g., PMI codebooks) can be broadly divided into Type I and Type II codebooks. Type I codebooks are primarily targeted at SU (Single User)-MIMO, which supports both high-order and low-order signals. Type II codebooks can primarily support MI-MIMO, which supports up to two layers. Compared to Type I, Type II codebooks can provide more accurate CSI, but may increase signaling overhead. Meanwhile, Enhanced Type II codebooks were introduced to address the CSI overhead shortcomings of existing Type II codebooks. Enhanced Type II codebooks were introduced by reducing the codebook payload by considering frequency-axis correlation.

[0111] CSI reporting via PUSCH can be configured as Part 1 and Part 2. Part 1 has a fixed payload size and is used to identify the number of information bits in Part 2. Part 1 is transmitted in its entirety before Part 2.

[0112] - For Type I CSI feedback, Part 1 contains the RI (if reported), the CRI (if reported), and the CQI of the first code word. Part 2 contains the PMI, and when RI > 4, Part 2 contains the CQI.

[0113] - For Type II CSI feedback, Part 1 contains the RI (if reported), CQI, and an indication of the number of non-zero WB amplitude coefficients per layer of Type II CSI. Part 2 contains the PMI of Type II CSI.

[0114] - For Enhanced Type II CSI feedback, Part 1 contains the RI (if reported), CQI, and the total number of non-zero WB amplitude coefficients for all layers of Enhanced Type II CSI. Part 2 contains the PMI of Enhanced Type II CSI.

[0115] If CSI reporting on PUSCH includes two parts and the CSI payload to be reported is less than the payload size provided by the PUSCH resources allocated for CSI reporting, the UE may omit part of Part 2 CSI.

[0116] Meanwhile, semi-persistent CSI reporting performed in PUCCH format 3 or 4 supports Type II CSI feedback, but only Part 1 of Type II CSI feedback.

[0117] QCL (quasi-co location)

[0118] Two antenna ports are quasi-co-located if the channel properties of one antenna port can be inferred from the channel properties of the other antenna port. The channel properties may include one or more of Delay spread, Doppler spread, Frequency / Doppler shift, Average received power, Received Timing / average delay, and Spatial RX parameters.

[0119] A terminal can configure a list of multiple TCI-State configurations via the upper layer parameter PDSCH-Config. Each TCI-State is associated with one or two DL reference signals and a QCL configuration parameter between the DM-RS port of the PDSCH. The QCL can include qcl-Type1 for the first DL RS and qcl-Type2 for the second DL RS. The QCL type can correspond to one of the following:

[0120] - 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}

[0121] - 'QCL-TypeB': {Doppler shift, Doppler spread}

[0122] - 'QCL-TypeC': {Doppler shift, average delay}

[0123] - 'QCL-TypeD': {Spatial Rx parameter}

[0124] Beam Management (BM)

[0125] The BM process is a process for acquiring and maintaining a set of BS (or transmission and reception point (TRP)) and / or UE beams that can be used for downlink (DL) and uplink (UL) transmission / reception, and may include the following processes and terms.

[0126] - Beam measurement: An operation in which a BS or UE measures the characteristics of a received beamforming signal.

[0127] - Beam determination: An operation in which a BS or UE selects its own transmit beam (Tx beam) / receive beam (Rx beam).

[0128] - Beam sweeping: An operation of covering a spatial domain using transmit and / or receive beams over a predetermined time interval in a predetermined manner.

[0129] - Beam report: An operation in which a UE reports information about a beamformed signal based on beam measurement.

[0130] The BM process can be divided into (1) a DL BM process using SSB or CSI-RS, and (2) a UL BM process using SRS (sounding reference signal). In addition, each BM process can include Tx beam sweeping to determine a Tx beam and Rx beam sweeping to determine an Rx beam.

[0131] At this time, the DL BM process may include (1) transmission of beamformed DL RSs (e.g., CSI-RS or SSB) by the BS and (2) beam reporting by the UE.

[0132] Here, the beam report may include preferred DL RS ID(s) and corresponding reference signal received power (RSRP). The DL RS ID may be an SSB Resource Indicator (SSBRI) or a CSI-RS Resource Indicator (CRI).

[0133] Figure 8 is a diagram for explaining a method of performing full duplex operation in an NR system.

[0134] 5G is giving rise to new service types, such as XR (Extended Reality), AI-based services, and self-driving cars. These services feature dynamic traffic in both DL and UL directions, and require low latency for packet transmission. To support these diverse new use cases, 5G services could experience explosive growth in traffic load. Meanwhile, existing semi-static or dynamic TDD UL / DL configurations may face limitations in transmission delays and interference between operators. Existing FDD schemes may 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.

[0135] Referring to Fig. 8, a method of applying full-duplex operation in an intra-carrier is illustrated. Specifically, the full-duplex operation may be considered as the subband-wise full duplex (SB-FD) method illustrated in Fig. 8 (a) and the spectrum-sharing full duplex (SS-FD) method illustrated in Fig. 8 (b).

[0136] In the case of SB-FD, transmission and reception of DL and UL can be performed using different frequency resources on the same carrier. That is, DL and UL can have different frequency resources for the same time resource. In the case of SS-FD, transmission and reception of DL and UL are performed using the same frequency resources or overlapping frequency resources on the same carrier. That is, DL and UL can be assigned the same or overlapping frequency resources for the same time resource.

[0137] This full-duplex operation can be combined with existing half-duplex operation. For example, in existing half-duplex-based TDD operation, only some time resources can be used for full-duplex operation. In the time resources where full-duplex operation is performed, SB-FD or SS-FD operation can be performed.

[0138] Specifically, referring to FIG. 9, time resources may exist together as time resources operating in HD (half duplex) and as time resources operating in FD (full duplex) such as SB-FD or SS-FD. As illustrated in FIG. 9 (a), the time resources may include some time resources for SB-FD operation and the remaining time resources for HD operation. Alternatively, as illustrated in FIG. 9 (b), the time resources may include time resources for SS-FD operation and the remaining time resources for HD operation. In this case, the unit of the time resources (for SS-FD operation, SB-FD operation, or HD operation) may be a slot or a symbol unit. Meanwhile, in the time resources operating in SB-FD, some frequency resources may be used as DL resources, and some frequency resources may be used as UL resources.

[0139] In the following, frequency resources operating as DL among the entire frequency resources in a time resource operating as FD (e.g., SB-FD operation or SS-FD operation) are defined as DL sub-bands, and frequency resources operating as UL are defined as UL sub-bands.

[0140] In the case of the full-duplex (hereinafter, FD) operation as described above, the FD operation can be performed from both the gNB perspective and the UE perspective. For example, both the gNB and the UE can simultaneously transmit and receive DL / UL using the same or different frequency resources in the same time resource. Alternatively, only the gNB can perform the FD operation (in the same time resource), and the UE can perform the HD operation. The gNB can simultaneously transmit and receive DL and UL using the same or different frequency resources in the same time resource, but the UE can perform only DL reception or UL transmission in a specific time resource. In this case, the gNB can perform the FD operation in a way that performs DL transmission and UL reception for different UEs at the same time point (or, the same time resource).

[0141] The following description generally assumes that the gNB performs FD operations and the UE performs HD operations. However, the description can also be applied to cases where both the gNB and the UE perform FD operations. Based on the above discussion, the following describes in detail how to configure BWP resources for intra-carrier FD operations.

[0142] Background of FDR

[0143] The introduction of FDR is being discussed in certain scenarios (e.g., 3GPP RAN plenary). There are two main types of FDR being discussed in these scenarios: one is FDR, in which the gNB transmits and receives DL and UL signals (or transmits DL and receives UL) at the same frequency at the same time; and the other is FDR, in which the gNB transmits and receives DL and UL signals (or transmits DL and receives UL) at different frequencies at the same time. Here, different frequencies refer to different frequency resources, but different frequencies within a carrier or spectrum, unlike FDD. In both cases, the UE may or may not support FDR, in which transmission and reception occur at the same time, while in all cases, it is assumed that the gNB transmits and receives at the same time.

[0144] In operating this FDR, the gNB may consider dividing the time intervals into HD (half duplex) and FD (full duplex). These can be broadly categorized into SBFD (sub-band full duplex) and SFFD (single frequency full duplex). The slot configuration and cell resource pattern for these can be considered based on the following example.

[0145] First, SBFD can be considered as shown in Figs. 9 (a) and 10 (a). Specifically, referring to Fig. 10 (a), the subband region of the DL and the subband region of the UL may not overlap each other. In this case, a guard band may exist between the subband region of the DL and the subband region of the UL (example of slot configuration). Alternatively, referring to Fig. 9 (a), the SBFD operation can be performed based on a resource pattern of a cell or a base station. For example, in the resource pattern, a half-duplex (HD) slot / symbol and an SBFD slot / symbol can be TDM'd with each other.

[0146] Alternatively, SFFD may be considered as examples such as those in FIG. 9 (b) and FIG. 10 (b). Specifically, referring to FIG. 10 (b), the subband region of the DL and the subband region of the UL may overlap with each other. Alternatively, referring to FIG. 9 (b), the SFFD operation may be performed based on a resource pattern of a cell or a base station. For example, in the resource pattern, a half-duplex (HD) slot / symbol and an SBFD slot / symbol may be TDM'd with each other.

[0147] Inter cell FD Time Frequency configuration information exchange

[0148] The second base station may operate based on the above-described SBFD (or FD), and the first base station of the adjacent cell may operate based on SBFD (or FD) or TDD. In this case, the first base station needs to identify in which time / frequency band interference (e.g., cross link interference; CLI) will occur due to the SBFD operation of the second base station, and handle the CLI for the identified time / frequency band. To this end, the first base station needs to receive SBFD configuration for the DL / UL time / frequency band from the second base station.

[0149] As described above, SBFD (Sub-band full duplex) operation and SSFD (Spectrum Sharing Full Duplex), which are types of FD (Full duplex), may be supported. SBFD operation may be an operation in which UL signal reception is performed on a subband (or, some frequency resources) in some slots / symbols of DL (Downlink) in existing dynamic TDD. Here, since the subbands are used in different link directions, DL / UL may exist simultaneously through different frequency resources in the same slot / symbol. Unlike SBFD, SSFD operation may be an operation in which DL and UL are transmitted and received through the same frequency resources that overlap in the same slot / symbol. In the following, for convenience of explanation, SSFD operation and SBFD operation are briefly defined as FD operation and described.

[0150] When performing FD operation, since UL and DL transmission and reception operations are performed simultaneously in the same slot / symbol, interference may occur between inter / intra cells, sub-bands, and / or operators. Such interference may be defined as Cross Link Interference (CLI). Methods for handling the CLI may include self-interference cancellation at the base station, power control in UL / DL, and MCS adjustment. Hereinafter, a base station generating CLI is defined as a second base station, and a base station affected by the CLI is defined as a first base station.

[0151] When the above-described CLI handling scheme (e.g., self-interference cancellation, power control in UL / DL, MCS adjustment, etc.) is used to reduce the impact of CLI at the first base station, the first base station may need resource information about the location of time resources and / or frequency resources on which the FD operation is performed at the second base station. For example, the first base station may perform an operation for mitigating CLI in the time / frequency resources provided by the second base station on which the FD operation is performed. Alternatively, the first base station may expect not to be affected by CLI while performing the HD operation at the second base station based on the location information of the time resources and / or frequency resources. In this case, the first base station may not perform a CLI handling scheme, etc. for slots / symbols on which the HD operation, not the FD operation, is performed based on the resource information provided by the second base station, and may avoid performance degradation due to performing an operation for CLI processing.

[0152] Meanwhile, since the first base station is affected by the CLI caused by the second base station during the time period of slots / symbols in which the FD operation is performed at the second base station, the first base station may perform the above-described CLI processing method to avoid the CLI effect during the time period of slots / symbols in which the FD operation is performed at the second base station. The first base station may know the location information of the frequency resources in which the FD operation is performed according to the resource information, and may perform an operation to avoid / mitigate the CLI generated at the first base station by the second base station through the CLI processing method of adjacent channel suppression and scheduling (and / or self-interference cancellation, power control in UL / DL, and MCS adjustment). Therefore, the first base station may need information about the time resources and / or frequency resources in which the FD operation is performed at the second base station.

[0153] The method proposed below can provide location / resource information on the time / frequency resources where FD operations are performed from a second base station to a first base station. In this case, the first base station can take measures, such as a CLI processing method, to minimize the impact on CLI generated by the second base station based on the resource information provided from the second base station.

[0154] In relation to the provision of the above resource information, an Intended TDD DL-UL Configuration NR Information element (IE) is defined among the information transmitted / provided between base stations through the F1 / Xn interface. The Intended TDD DL-UL Configuration NR may include information such as subcarrier spacing, cyclic prefix (CP), DL-UL transmission periodicity, and slot configuration list (see TS 38.423 9.2.2.40, TS 38.473 9.3.1.89). In order to simplify the transmission of resource information for the FD operation, time / frequency resource information for the FD operation (hereinafter, FD resource information) may be added to the existing Intended TDD DL-UL Configuration NR IE. In this case, base stations can share FD resource information by exchanging Intended TDD DL-UL Configuration NR IEs with each other.

[0155] First, information on the previously defined Intended TDD DL-UL Configuration NR can be defined as in Table 5 (see 3GPP TS 38.423 9.2.2.40, TS 38.473 9.3.1.89).

[0156] IE / 그룹 이름Presence범위(Range)IE Type and ReferenceSemantics DescriptionCriticalityAssigned CriticalityNR SCSMENUMERATED (scs15, scs30, scs60, scs120, ..., scs480, scs960)The values scs15, scs30, scs60 and scs120 corresponds to the sub carrier spacing in TS 38.104

[0024] .-NR Cyclic PrefixMENUMERATED (Normal, Extended, ...)The type of cyclic prefix, which determines the number of symbols in a slot.-NR DL-UL Transmission PeriodicityMENUMERATED (ms0p5, ms0p625, ms1, ms1p25, ms2, ms2p5, ms3, ms4, ms5, ms10, ms20, ms40, ms60, ms80, ms100, ms120, ms140, ms160, ...)The periodicity is expressed in the format msXpYZ, and equals X.YZ milliseconds.-Slot Configuration List1->Slot Configuration List Item1.. <maxnoofslots>->>Slot IndexINTEGER (0.. 5119)->>CHOICE Symbol Allocation in SlotM->>>All DL->>>All UL->>>Both DL and UL->>>>Number of DL SymbolsMINTEGER (0..13)Number of consecutive DL symbols in the slot identified by Slot Index. If extended cyclic prefix is ​​used, the maximum value is 11. ThePermutationIE indicates the location of DL symbols in the slot.->>>>Number of UL SymbolsMINTEGER (0..13)Number of consecutive UL symbols in the slot identified by Slot Index. If extended cyclic prefix is ​​used, the maximum value is 11. ThePermutationIE indicates the location of UL symbols in the slot.->>>>PermutationOENUMERATED (DFU, UFD, ...)If not present, the default value is DFU.YESignore

[0157] Intended TDD DL-UL Configuration NR already has a slot configuration list, but this list is only used to convey TDD-based DL-UL configuration information. However, the slot configuration list may not contain enough information to include FD resource information. Therefore, a new field / item needs to be defined in Intended TDD DL-UL Configuration NR to provide FD resource information.

[0158] Specifically, the following two methods can be considered for transmitting FD resource information through Intended TDD DL-UL Configuration NR.

[0159] The first method (hereinafter, referred to as the first method) may be a method for transmitting FD resource information within a period (dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon). The second method (hereinafter, referred to as the second method) may be a method for transmitting resource information in which the FD does not operate through an item / field defined to operate as an HD, such as a protected TDD slot (an HD time resource defined so that only HD operations are performed for the purpose of not generating CLI). Meanwhile, in the first and second methods, the method for providing resource information related to the FD operation / HD operation may provide only time resource information, only frequency resource information, or both time resource information and frequency resource information.

[0160] 1. Method 1 (provision of FD resource information on which FD operations were performed)

[0161] According to the first method, the transmission of FD resource information has the following differences from the transmission of HD operation / HD resource information. For example, the transmission of FD resource information requires the transmission of information on both time resources and frequency resources. In this case, the first base station can determine in which time / frequency resources it is necessary to perform CLI processing based on the FD resource information of the second base station. At this time, the first base station may require information on time resources, information on frequency resources, or information on both time and frequency resources as FD resource information for CLI processing, etc. In the following, a method of transmitting information on time resources, information on frequency resources, or information on both time and frequency resources as FD resource information is described separately.

[0162] (1) Method of transmitting only time resource information that operates as FD

[0163] FD resource information including only time resource information can be provided through items / fields such as a newly defined time domain FD slot configuration list in the Intended TDD DL-UL Configuration NR, which is distinguished from the existing slot configuration list (i.e., items / fields in the Intended TDD DL-UL Configuration NR). Time resource information operating as an FD (hereinafter, FD time resource information) can include DL / UL / FD information for each slot. Here, the slot can be distinguished through the slot index, and the slot index can correspond to or be the same as the slot index of the existing slot configuration list. Here, a given slot can be classified into four slot states / types. The four slot states / types can be All DL type, All UL type, All FD type, and combination type (DL / UL / FD, UL / FD, DL / FD). In the case of All DL, All UL, and All FD types, it indicates that all symbols of the corresponding slot are symbols for DL, UL, or FD. In the case of the combination type, the symbol configuration of the symbols within the slot needs to be separately specified. For example, the symbol configuration of the combination type may include information about the number of DL symbols, the number of UL symbols, the number of FD symbols, etc. included in the corresponding slot. At this time, the setting order of each symbol within the slot can be defined through permutation, but for the convenience of explanation, the following explanation is given on the assumption that it is a specific basic permutation (DXFU and (X is an FD symbol)).

[0164] In this way, the FD slot setting list according to the proposed method can be defined as shown in Tables 6 and 7 below.

[0165] IE / Group NamePresenceRangeIE type and referenceSemantics descriptionCriticalityAssigned CriticalityTime-Domain FD Slot Configuration List0..1>FD Slot Configuration Item1.. <maxnoofslots>>>Slot IndexMINTEGER (0..5119)->>CHOICESymbol Allocation in SlotM->>>All DLNULLThis choice implies that all symbols in the slot are DL symbols.->>>All ULNULLThis choice implies that all symbols in the slot are UL symbols.->>>All FDNULLThis choice implies that all symbols in the slot are FD symbols.->>>Both DL and / or ULand / or FD->>>>Number of DL SymbolsMINTEGER (0..13)Number of consecutive DL symbols in the slot identified by Slot Index IE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of DL symbols in the slot.->>>>Number of UL SymbolsMINTEGER (0..13)Number of consecutive UL symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of UL symbols in the slot.->>>>Number of FD SymbolsMINTEGER (0..13)Number of consecutive FD symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is used, the maximum value is 11.ThePermutationIE indicates the location of FD symbols in the slot.->>>>PermutationOENUMERATED (DFU, UFD, ...)If not present, the default value is DXFU.YESignore.

[0166] Range boundExplanationmaxnoofslotsMaximum length of number of slots in a 10-ms period. Value is 5120.

[0167] (2) Method of transmitting only frequency resource information operating as FD

[0168] FD resource information including only frequency resource information can be provided through items / fields such as a frequency domain FD configuration list that are defined separately from the existing slot configuration list (i.e., items / fields within the Intended TDD DL-UL Configuration NR). The FD frequency resource information operating as an FD can indicate a UL subband within a period in the case of SBFD, and can include frequency information of DL / UL spectrum sharing in the case of SSFD. The frequency resources of the UL subband of SBFD and the spectrum sharing of SSFD can be expressed as a start index and an end index through the index of the RB set within the system bandwidth, or can be expressed through the start index and the bandwidth.

[0169] In the case of SBFD, the adjacent cell or the first base station may determine the frequency resource information (or frequency band) transmitted through the frequency-domain FD configuration list as the UL subband related to SBFD, and may implicitly determine another frequency band within the same time resource as the DL subband of SBFD. In the case of SSFD, the adjacent cell or the first base station may determine the frequency band transmitted through the frequency-domain FD configuration list as the FD band, and may implicitly determine another frequency band within the same time resource as the HD band of SSFD.

[0170] In this way, the frequency-domain FD setting list according to the proposed method can be defined as shown in Table 8 below.

[0171] IE / Group NamePresenceRangeIE type and referenceSemantics descriptionCriticalityAssigned CriticalityFrequency-Domain FD Configuration List0..1YESreject>Frequency-Domain FD Configuration Item1.. <maxnoofrbsetspercell>EACHreject>>Start RB Set IndexMINTEGER (0.. maxnoofRBsetsPerCell-1, ...)Refers to an RB set defined by RB Set Configuration (TS 38.473 9.3.1.230).The RB set indices are consecutive (and increasing) starting at 0.->>Last RB Set IndexMINTEGER (0.. maxnoofRBsetsPerCell-1, ...)Refers to an RB set defined by RB Set Configuration (TS 38.473 9.3.1.230).The RB set indices are consecutive (and increasing) starting at 0.-

[0172] Additionally, the description of FD items / fields for RB set configuration (see 3GPP TS 38.473 9.3.1.230) can be defined as in Table 9.

[0173] IE / Group NamePresenceRangeIE type and referenceSemantics descriptionSubcarrier SpacingMENUMERATED (kHz15, kHz30, kHz60, kHz120, kHz240, spare3, spare2, spare1, ...)Subcarrier spacing used as reference for the RB set configuration.RB Set SizeMENUMERATED (rb2, rb4, rb8, rb16, rb32, rb64)Number of PRBs in each RB set.If the RB sets of IAB-DU H / S / NA orFDresource configuration do not cover the entire carrier bandwidth, the remaining RBs not part of an RB set configuration are considered as included in the last RB set.Number of RB SetsMINTEGER(1..maxnoofRBsetsPerCell)Number of configured RB sets. The RB sets are contiguous and non-overlapping.IfNR Carrier ListIE(9.3.1.137) is provided, the start RB index of the first RB set is the RB index of the lowest common RB with the SCS provided byRB Set ConfigurationIE, which overlaps with the lowest usable RB across all SCS-specific carriers provided by theNR Carrier ListIE for the IAB-DU cell.Otherwise, the start RB of the first RB set is aligned with point A for the IAB-DU orFDcell.

[0174] (3) Method of transmitting all time / frequency resource information operating as FD

[0175] A method for transmitting both time / frequency resource information operating as an FD may utilize both the time resource information transmission method and the frequency resource information transmission method described above. For convenience of explanation, the time resource information is defined / expressed as being transmitted below the frequency resource information below, but this is not limited to this, and the frequency resource information may be transmitted below the time resource information, or the time resource information and frequency resource information may be transmitted independently.

[0176] The method of transmitting time resource information below frequency resource information can be defined as shown in Table 10.

[0177] IE / Group NamePresenceRangeIE type and referenceSemantics descriptionCriticalityAssigned CriticalityFD Configuration List0..1YESreject> FD Configuration Item1.. <maxnoofrbsetspercell>EACHreject>>Start RB Set IndexMINTEGER (0.. maxnoofRBsetsPerCell-1, ...)Refers to an RB set defined by RB Set Configuration (TS 38.473 9.3.1.230).The RB set indices are consecutive (and increasing) starting at 0.->>Last RB Set IndexMINTEGER (0.. maxnoofRBsetsPerCell-1, ...)Refers to an RB set defined by RB Set Configuration (TS 38.473 9.3.1.230).The RB set indices are consecutive (and increasing) starting at 0.->> Time-Domain FD Slot Configuration List1->>> FD Slot Configuration Item1.. <maxnoofhsnaslots>->>>>Slot IndexMINTEGER (0..5119)->>>>CHOICESymbol Allocation in SlotM->>>>>All DLNULLThis choice implies that all symbols in the slot are DL symbols.->>>>>All ULNULLThis choice implies that all symbols in the slot are UL symbols.->>>>>All FDNULLThis choice implies that all symbols in the slot are FD symbols.->>>>>Both DL and / or UL and / or FD->>>>>>Number of DL SymbolsMINTEGER (0..13)Number of consecutive DL symbols in the slot identified by Slot Index IE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of DL symbols in the slot.->>>>>>Number of UL SymbolsMINTEGER (0..13)Number of consecutive UL symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of UL symbols in the slot.->>>>>>Number of FD SymbolsMINTEGER (0..13)Number of consecutive FD symbols in the slot identified by Slot IndexIE.If extended cyclic prefix is ​​used, the maximum value is 11. ThePermutationIE indicates the location of FD symbols in the slot.->>>>>>PermutationOENUMERATED (DFU, UFD, ...)If not present, the default value is DXFU.YESignore.

[0178] Below, we describe in detail a second method that provides information about time resources on which FD operations are not performed.

[0179] 2. Second method - How to pass resource information that does not work with FD

[0180] Alternatively, the second method may be a method for transmitting HD resource information about the location of time / frequency resources that do not operate as FDs in relation to CLI processing. For example, the second method is a method for providing HD resource information for a time interval in which only HD operations are fixedly performed, unlike other time intervals in which the HD operation time interval and the FD operation time interval may change. In this case, the first base station can clearly recognize that it is unnecessary to perform operations related to CLI processing for the time interval corresponding to the HD resource information.

[0181] (1) Method of transmitting only time resource information that does not operate as FD

[0182] The method of providing time resource information as HD resource information may be similar to the basic method of providing time resource information as FD resource information (1-(1)). For example, the method of providing time resource information as HD resource information may differ from the method of providing time resource information (1-(1)) only in that the information transmitted by the second base station to the first base station is HD resource information, not FD resource information. In this case, the DL / UL resources defined as HD resource information may be protected HD resources whose operation is unlikely to be changed to FD operation through dynamic instructions from the second base station, etc. In this case, the first base station may determine that there is no need to apply a CLI processing method, etc., to the time resource / frequency resource indicated by the HD resource information.

[0183] HD resource information can indicate, for each slot, based on an index, whether the corresponding slot is a slot for HD. A slot indicated as All HD may be a protected HD resource / HD slot that is not converted to FD. The symbol configuration of the combination type (DLHD / ULHD) may include information on the number of DL symbols and the number of UL symbols included in the corresponding slot. At this time, the setting order of each symbol in the slot may be defined through permutation. For example, DLHD symbols may be defined sequentially from the symbol before the DL symbol, and ULHD symbols may be defined sequentially from the symbol after the defined UL symbol.

[0184] The method of providing the time resource information as the HD resource information described above can be provided through items / fields as defined in Tables 11 and 12 below.

[0185] IE / Group NamePresenceRangeIE type and referenceSemantics descriptionCriticalityAssigned CriticalityTime-Domain HD Slot Configuration List0..1>FD Slot Configuration Item1.. <maxnoofslots>>>Slot IndexMINTEGER (0..5119)->>CHOICESymbol Allocation in SlotM->>>All DLNULLThis choice implies that all symbols in the slot are DL symbols.->>>All ULNULLThis choice implies that all symbols in the slot are UL symbols.->>>All HDNULLThis choice implies that all symbols in the slot are HD symbols.->>>Both DL and / or ULand / or HD->>>>Number of DL SymbolsMINTEGER (0..13)Number of consecutive DL symbols in the slot identified by Slot Index IE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of DL symbols in the slot.->>>>Number of UL SymbolsMINTEGER (0..13)Number of consecutive UL symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of UL symbols in the slot.->>>>Number of DLHD SymbolsMINTEGER (0..13)Number of consecutive HD symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is used, the maximum value is 11.ThePermutationIE indicates the location of HD symbols in the slot.->>>>Number of ULHD SymbolsMINTEGER (0..13)Number of consecutive HD symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is ​​used, the maximum value is 11. ThePermutationIE indicates the location of HD symbols in the slot.->>>>PermutationOENUMERATED (DFU, UFD,...)If not present, the default value is DFU.YESignore.

[0186] Range boundExplanationmaxnoofslotsMaximum length of number of slots in a 10-ms period. Value is 5120.

[0187] (2) Transmits frequency information that operates as FD and time resource information that does not operate as FD.

[0188] The combined resource information for transmitting frequency resource information that operates as FD and time resource information that does not operate as FD may include time resource information of a protected HD and FD frequency resource information on which FD operation is performed. As described above (Section 1-(3)), the time resource information is defined / expressed as being transmitted under the frequency resource information (FD frequency resource information), but this is not limited to the above, and the frequency resource information may be transmitted under the time resource information, or the time resource information and the frequency resource information may each be transmitted independently.

[0189] Specifically, as sub-information of frequency resource information (FD frequency resource information), information on protected HD time resources can be provided through items / fields as shown in Table 13.

[0190] IE / Group NamePresenceRangeIE type and referenceSemantics descriptionCriticalityAssigned CriticalityFD Configuration List0..1YESreject> FD Configuration Item1.. <maxnoofrbsetspercell>EACHreject>>Start RB Set IndexMINTEGER (0.. maxnoofRBsetsPerCell-1, ...)Refers to an RB set defined by RB Set Configuration (TS 38.473 9.3.1.230).The RB set indices are consecutive (and increasing) starting at 0.->>Last RB Set IndexMINTEGER (0.. maxnoofRBsetsPerCell-1, ...)Refers to an RB set defined by RB Set Configuration (TS 38.473 9.3.1.230).The RB set indices are consecutive (and increasing) starting at 0.->> Time-Domain HD Slot Configuration List1->>> HD Slot Configuration Item1.. <maxnoofhsnaslots>->>>>Slot IndexMINTEGER (0..5119)->>>>CHOICESymbol Allocation in SlotM->>>>>All DLNULLThis choice implies that all symbols in the slot are DL symbols.->>>>>All ULNULLThis choice implies that all symbols in the slot are UL symbols.->>>>>All HDNULLThis choice implies that all symbols in the slot are HD symbols.->>>>>Both DL and / or UL and / or HD->>>>>>Number of DL SymbolsMINTEGER (0..13)Number of consecutive DL symbols in the slot identified by Slot Index IE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of DL symbols in the slot.->>>>>>Number of UL SymbolsMINTEGER (0..13)Number of consecutive UL symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is used, the maximum value is 11. ThePermutationIE indicates the location of UL symbols in the slot.->>>>>>Number of DLHD SymbolsMINTEGER (0..13)Number of consecutive HD symbols in the slot identified by Slot IndexIE.If extended cyclic prefix is ​​used, the maximum value is 11. ThePermutationIE indicates the location of HD symbols in the slot.->>>>>>Number of ULHD SymbolsMINTEGER (0..13)Number of consecutive HD symbols in the slot identified by Slot IndexIE. If extended cyclic prefix is ​​used, the maximum value is 11. ThePermutationIE indicates the location of HD symbols in the slot.->>>>>>PermutationOENUMERATED (DFU, UFD, ...)If not present, the default value is DFU.YESignore.

[0191] FIG. 11 is a diagram illustrating a method for a first base station to perform operations related to relaxation of CLI based on intended TDD DL-UL configuration information received from a second base station.

[0192] The first base station may exchange intended TDD DL-UL configuration information with the second base station as described in the "Inter-cell full duplex Time Frequency configuration information exchange" section. For example, the first base station may receive intended TDD DL-UL configuration information including information defined as in at least one of Tables 5 to 13 from the second base station. For example, when the second base station performs an operation based on SBFD or SFFD, the intended TDD DL-UL configuration information may further include information on time resources / frequency resources on which SBFD or SFFD is performed as described above.

[0193] Specifically, referring to FIG. 11, a first base station can transmit first intended TDD (Time Division Duplexing) DL-UL (downlink-uplink) configuration information to a second base station (S111). Here, the first intended TDD DL-UL configuration information can be transmitted via an Xn interface or an F1 interface, which is an interface between base stations.

[0194] Next, the first base station can receive second intended TDD DL-UL configuration information related to the second base station from the second base station (S113). Here, the second intended TDD DL-UL configuration information can also be transmitted through the Xn interface or the F1 interface, which is an interface between base stations. If the second base station is to perform an operation based on SBFD or SFFD, as described above, the second intended TDD DL-UL configuration information may further include time resource information and / or frequency resource information on which the SBFD or SFFD operation is performed. For the convenience of explanation below, the operation of SBFD or SFFD is defined as an FD operation and described.

[0195] Specifically, when the second base station performs the FD operation, as described above, the second intended TDD DL-UL configuration information may further include FD time resource information and / or FD frequency resource information related to the FD operation defined based on at least one of Tables 6 to 13. For example, the second intended TDD DL-UL configuration information may further include the FD slot configuration list defined in Tables 6 and 7, while including the slot configuration list previously defined in Table 5. Alternatively, the second intended TDD DL-UL configuration information may further include the frequency-domain FD configuration list and information about RB set configuration defined in Tables 8 and 9, while including the slot configuration list previously defined in Table 5. Alternatively, the second intended TDD DL-UL configuration information may further include FD resource information in which FD time resource information is set as sub-information in the frequency-domain FD configuration list, as in Table 10, while including the slot configuration list previously defined in Table 5. Alternatively, the second intended TDD DL-UL configuration information may further include HD time resource information / HD frequency resource information in which only HD operations are performed, as shown in Tables 11 to 13, while including the slot configuration list previously defined in Table 5.

[0196] For example, the second intended TDD DL-UL configuration information may include FD (full duplex) slot configuration information for a slot in which an FD operation is performed. Here, the FD slot configuration information may include information indicating whether all symbols included in a corresponding slot for each slot index are composed of UL symbols, DL symbols, or FD symbols. For example, the FD slot configuration information may indicate whether the slot corresponding to the slot index corresponds to any of the above-described types: All DL type, All UL type, All FD type, and combination type (DL / UL / FD, UL / FD, DL / FD). When the FD slot configuration information indicates the index of a specific slot as a slot of the combination type, the FD slot configuration information may further include symbol information regarding the number of DL symbols and the number of FD symbols for the specific slot, or the number of UL symbols and the number of FD symbols.

[0197] Alternatively, the second intended TDD DL-UL configuration information may further include frequency resource information related to a start frequency and bandwidth for specifying a frequency band on which the FD is performed. For example, the second intended TDD DL-UL configuration information may include information on a start frequency and bandwidth for a DL subband and / or a UL subband on which the FD is performed. For example, the second intended TDD DL-UL configuration information may include information indicating a start RB index and a last RB index of at least one of the DL subband and the UL subband on which the FD is performed, or may include information indicating a start RB index and a bandwidth of at least one of the DL subband and the UL subband on which the FD is performed. In addition, the second intended TDD DL-UL configuration information may further include configuration information on an RB set defined as in Table 9.

[0198] In this case, the first base station may perform operations related to mitigation of CLI based on the second intended TDD DL-UL configuration information (S115). For example, the time interval / frequency interval in which CLI may occur due to the FD operation of the second base station may be specified, and operations for mitigation of CLI for the specified time interval / frequency interval may be performed. For example, the first base station may perform operations related to a CLI handling scheme, such as adjacent channel suppression or scheduling, based on the time interval / frequency band in which the FD operation of the second base station is performed.

[0199] Alternatively, the second intended TDD DL-UL configuration information may include information on a protection HD slot in which only an HD operation is performed instead of the time resource information / frequency resource information in which the FD operation is performed. Alternatively, the second intended TDD DL-UL configuration information may include both the time resource information / frequency resource information in which the FD operation is performed and information on the protection HD slot. In this case, the first base station can clearly specify a time period in which an operation related to relaxation of CLI is unnecessary (i.e., a time period in which the second base station only performs an HD operation) based on the second intended TDD DL-UL configuration information.

[0200] FIG. 12 is a diagram illustrating a method for a second base station to exchange intended TDD DL-UL configuration information with a first base station.

[0201] Referring to FIG. 12, the second base station may receive first intended TDD DL-UL configuration information related to the first base station (S121). The first intended TDD DL-UL configuration information may include a slot configuration list related to TDD defined in Table 5 as described above. Alternatively, when the first base station performs an operation related to FD, the first intended TDD DL-UL configuration information may further include time resource information and / or frequency resource information on which the operation of the FD is performed.

[0202] Next, the second base station can transmit second intended TDD DL-UL configuration information related to the second base station to the first base station (S123). As described above, based on the second base station supporting the FD (sub-band full duplex) operation, the second intended TDD DL-UL configuration information may further include FD (full duplex) slot configuration information for a slot in which the FD operation is performed. For example, when the second base station is scheduled to perform an operation related to FD, CLI may occur in the first base station due to the FD operation. Accordingly, the first base station can induce the first base station to appropriately perform an operation for alleviating CLI by providing the FD slot configuration information for the slot in which the FD operation is performed to the first base station through the second intended TDD DL-UL configuration information.

[0203] For example, the second intended TDD DL-UL configuration information may further include the FD slot configuration list defined in Tables 6 and 7, while including the slot configuration list previously defined in Table 5. Alternatively, the second intended TDD DL-UL configuration information may further include the frequency-domain FD configuration list and information about RB set configuration defined in Tables 8 and 9, while including the slot configuration list previously defined in Table 5. Alternatively, the second intended TDD DL-UL configuration information may further include the slot configuration list previously defined in Table 5, while including FD resource information in which FD time resource information is set as sub-information in the frequency-domain FD configuration list, as in Table 10. Alternatively, the second intended TDD DL-UL configuration information may further include the HD time resource information / HD frequency resource information in which only HD operations are performed, as in Tables 11 to 13, while including the slot configuration list previously defined in Table 5.

[0204] Specifically, the second intended TDD DL-UL configuration information may include FD (full duplex) slot configuration information for a slot in which an FD operation is performed. Here, the FD slot configuration information may include information indicating whether all symbols included in a corresponding slot for each slot index are composed of UL symbols, DL symbols, or FD symbols. For example, the FD slot configuration information may indicate whether the slot corresponding to the slot index corresponds to any of the above-described types: All DL type, All UL type, All FD type, and combination type (DL / UL / FD, UL / FD, DL / FD). When the FD slot configuration information indicates the index of a specific slot as a slot of the combination type, the FD slot configuration information may further include information on a symbol configuration for the number of DL symbols and the number of FD symbols, or the number of UL symbols and the number of FD symbols for the specific slot.

[0205] Alternatively, the second intended TDD DL-UL configuration information may further include frequency resource information related to a start frequency and bandwidth for specifying a frequency band on which the FD is performed. For example, the second intended TDD DL-UL configuration information may include information on a start frequency and bandwidth for a DL subband and / or a UL subband on which the FD is performed. For example, the second intended TDD DL-UL configuration information may include information indicating a start RB index and a last RB index of at least one of the DL subband and the UL subband on which the FD is performed, or may include information indicating a start RB index and a bandwidth of at least one of the DL subband and the UL subband on which the FD is performed. In addition, the second intended TDD DL-UL configuration information may further include configuration information on an RB set defined as in Table 9.

[0206] In this way, the proposed invention can effectively indicate time / frequency resources where CLI may occur between base stations due to FD operations by exchanging resource information related to FD operations between base stations in advance based on the intended TDD DL-UL configuration information. Alternatively, the proposed invention can effectively perform operations to alleviate CLI that may occur due to FD operations. Alternatively, the proposed invention can additionally provide resource information related to FD operations by utilizing the intended TDD DL-UL configuration information, which is a previously defined IE, without defining a new IE.

[0207] Figure 13 illustrates a flexible network topology to which some examples of this specification may be applied.

[0208] Figure 13 illustrates a flexible network topology to which some examples of this specification may be applied.

[0209] To compensate for incomplete network coverage areas, a network topology that allows for more flexible and resilient split radio access networks (RANs) may be considered. For this purpose, various nodes, such as IAB nodes, relays, and RF repeaters, as illustrated in the example of Figure 13, may be applied, or NTNs may be integrated. For example, an IAB node may correspond to a node that provides wireless backhaul. For example, a relay may refer to any intermediate point, or in the case of a sidelink relay where a terminal functions as a relay, it may collectively refer to a terminal-to-network (U2N) relay and a terminal-to-terminal (U2U) relay. For example, an RF repeater may correspond to a node that simply performs the function of signal amplification and forwarding, while a network-controlled repeater may not only amplify and forward signals but also adjust transmission and reception settings based on information provided by the network. For example, an NTN node may correspond to a satellite or aircraft that provides NTN coverage that is difficult for terrestrial networks to provide. In addition to these examples, various intermediate points can be introduced to improve the network topology.

[0210] Referring to Figure 13, a split RAN can support the division of a base station into a centralized unit (CU) and one or more distributed units (DUs). The CU and DU can correspond to logical units. The CU can be further divided into a control plane (CP) portion and one or more user plane (UP) portions. Since a failure in the CU-CP affects not only the CU-UP but also the DUs, various intermediate points can be introduced to compensate for this.

[0211] An intermediate point may correspond to a terminal or a base station, depending on its relationship to other nodes. For example, an IAB node may include a mobile-termination (MT) portion and a unit (DU). The MT may connect the IAB node to a donor node. The unit (DU) of an IAB node may serve other terminals or connect to other IAB nodes to provide multi-hop wireless backhaul to the terminal. In other words, an IAB node may correspond to a base station in its relationship to a user-side node, and to a terminal in its relationship to a network-side node.

[0212] In some examples of this specification, the description of a terminal can be equally applied not only to a user-side endpoint, but also to an intermediate point corresponding to a terminal in a relative relationship with a network-side endpoint. Similarly, in some examples of this specification, the description of a base station can be equally applied not only to a network-side endpoint, but also to an intermediate point corresponding to a base station in a relative relationship with a user-side endpoint. However, in most cases where there is no additional description of the operations of three or more entities, the communicating entities in this specification are briefly described as terminals and / or base stations (or first nodes and / or second nodes), and the terms terminal and / or base stations (or first nodes and / or second nodes) are interpreted to include / replace any endpoint or any intermediate point in relation to other nodes.

[0213] That is, in some examples of this specification, for the sake of simplicity of explanation, the subjects of the operation may be referred to as a base station and / or a terminal (or a first node and / or a second node). In addition, the terms base station and / or terminal (or a first node and / or a second node) may also be interpreted / replaced as in the following examples: For example, the base station (or a first node) and the terminal (or a second node) may respectively correspond to the first endpoint and the second endpoint; may respectively correspond to the endpoint and the intermediate point; may respectively correspond to the intermediate point and the endpoint; or may respectively correspond to the first intermediate point and the second intermediate point.

[0214] In this specification, there may be zero or more intermediate points between the base station and the terminal. If intermediate points exist, they may be IAB nodes, relays, RF repeaters, NTN (non-terrestrial network) nodes, or nodes supporting other functions. An intermediate point may be a node with a fixed location or a node with an unfixed location.

[0215] Examples of communication systems to which the invention applies

[0216] Although not limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operational flowcharts of the present invention disclosed in this document may be applied to various fields requiring wireless communication / connection (e.g., 5G) between devices.

[0217] Hereinafter, more specific examples will be provided with reference to the drawings. In the drawings / descriptions below, the same drawing reference numerals may represent identical or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise described.

[0218] Figure 14 illustrates a communication system applied to the present invention.

[0219] Referring to FIG. 14, a communication system (1) applied to the present invention 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.

[0220] 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).

[0221] 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 invention.

[0222] Examples of wireless devices to which the present invention is applied

[0223] Figure 15 illustrates a wireless device applicable to the present invention.

[0224] Referring to FIG. 15, 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). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 14.

[0225] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), 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 via 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 / chipset designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via 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 the present invention, a wireless device may also mean a communication modem / circuit / chipset.

[0226] According to an example, the first wireless device (100) or the first base station may include a processor (102) and a memory (104) connected to the RF transceiver. The memory (104) may include at least one program capable of performing operations related to the embodiments described in FIGS. 9 to 12.

[0227] Specifically, the processor (102) can control the RF transceiver (106) to transmit first intended TDD DL-UL configuration information related to one base station to a second base station, and receive second intended TDD DL-UL configuration information related to the second base station from the second base station. Here, the second intended TDD DL-UL configuration information can include FD (full duplex) slot configuration information for a slot in which an operation of SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex) is performed.

[0228] Alternatively, a processing device including a processor (102) and a memory (104) may be configured. In this case, the processing device may include at least one processor; and at least one memory connected to the at least one processor and storing instructions, wherein the instructions, based on being executed by the at least one processor, cause the first base station (100) to: transmit first intended TDD (Time Division Duplexing) DL (downlink)-UL (uplink) configuration information related to the first base station to a second base station, and receive second intended TDD DL-UL configuration information related to the second base station from the second base station. Here, the second intended TDD DL-UL configuration information may include FD (full duplex) slot configuration information for a slot in which an operation of SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex) is performed.

[0229] Alternatively, a non-transitory computer-readable storage medium having recorded thereon instructions for performing the proposed methods described with reference to FIGS. 9 to 12 may be configured.

[0230] The second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (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 / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). Furthermore, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals 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 the present invention, a wireless device may also mean a communication modem / circuit / chip.

[0231] According to an example, the second wireless device (200) or the second base station may include a processor (202) and a memory (204) connected to the RF transceiver. The memory (204) may include at least one program capable of performing operations related to the embodiments described in FIGS. 9 to 12.

[0232] Specifically, the processor (202) can control the transceiver (206) or the RF transceiver to receive first intended TDD (Time Division Duplexing) DL (downlink)-UL (uplink) configuration information related to a first base station, and transmit second intended TDD DL-UL configuration information related to a second base station to the first base station. Here, based on whether the second base station supports an operation of SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex), the second intended TDD DL-UL configuration information can further include FD (full duplex) slot configuration information for a slot in which an operation of the SBFD or the SSFD is performed.

[0233] 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.

[0234] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. 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 one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operational 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 configured to perform 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.

[0235] 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.

[0236] 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.

[0237] Examples of wireless devices to which the present invention is applied

[0238] Figure 16 illustrates another example of a wireless device applicable to the present invention. The wireless device may be implemented in various forms depending on the use case / service.

[0239] Referring to FIG. 16, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 15 and may be composed of various elements, components, units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and additional elements (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 16. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 15. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0240] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 14, 100a), a vehicle (Fig. 14, 100b-1, 100b-2), an XR device (Fig. 14, 100c), a portable device (Fig. 14, 100d), a home appliance (Fig. 14, 100e), an IoT device (Fig. 14, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 14, 400), a base station (Fig. 14, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0241] In FIG. 16, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and a first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of one or more processor sets. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0242] Here, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create PAN (personal area networks) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0243] The embodiments described above are combinations of components and features of the present invention in a predetermined form. Each component or feature should be considered optional unless explicitly stated otherwise. Each component or feature may be implemented without being combined with other components or features. Furthermore, it is also possible to form an embodiment of the present invention by combining some components and / or features. The order of operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. It is self-evident that claims that do not have an explicit citation relationship in the patent claims may be combined to form an embodiment or may be incorporated as a new claim through a post-application amendment.

[0244] In this document, embodiments of the present invention have been described primarily focusing on the signal transmission and reception relationship between a terminal and a base station. This transmission and reception relationship is equally / similarly extended to signal transmission and reception between a terminal and a relay or a base station and a relay. Certain operations described as being performed by a base station in this document may, in some cases, be performed by its upper node. That is, it is obvious that various operations performed for communication with a terminal in a network composed of multiple network nodes including a base station may be performed by the base station or other network nodes other than the base station. The base station may be replaced by terms such as fixed station, Node B, eNode B (eNB), and access point. In addition, the terminal may be replaced by terms such as UE (User Equipment), MS (Mobile Station), MSS (Mobile Subscriber Station).

[0245] Embodiments of the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of hardware implementation, an embodiment of the present invention may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.

[0246] When implemented via firmware or software, an embodiment of the present invention may be implemented in the form of modules, procedures, functions, etc. that perform the functions or operations described above. The software code may be stored in a memory unit and executed by a processor. The memory unit may be located within or outside the processor and may exchange data with the processor via various known means.

[0247] It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the scope of the invention. Therefore, the above detailed description should not be construed as limiting in any respect, but rather as illustrative. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the scope of equivalents of the present invention are intended to be included within the scope of the present invention.

[0248] The embodiments of the present invention as described above can be applied to various mobile communication systems.< / maxnoofhsnaslots> < / maxnoofrbsetspercell> < / maxnoofslots> < / maxnoofhsnaslots> < / maxnoofrbsetspercell> < / maxnoofrbsetspercell> < / maxnoofslots> < / maxnoofslots>

Claims

1. A step of transmitting first intended TDD (Time Division Duplexing) DL-UL (downlink-uplink) configuration information related to the first base station to the second base station; and A step of receiving second intended TDD DL-UL configuration information related to the second base station from the second base station, A method wherein the second intended TDD DL-UL configuration information includes FD (full duplex) slot configuration information for a slot in which SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex) operation is performed.

2. In paragraph 1, A method characterized in that the above FD slot setting information includes information indicating whether all symbols included in a corresponding slot for each slot index are composed of UL symbols, DL symbols, or FD symbols.

3. In paragraph 2 A method characterized in that the above FD slot setting information further includes information on a specific slot in which a symbol configuration for the number of DL symbols and the number of FD symbols, or the number of UL symbols and the number of FD symbols, is defined.

4. In paragraph 1, A method characterized in that the first base station performs an operation related to mitigation of CLI (Cross Link Interference) based on the FD slot setting information.

5. In paragraph 1, A method, characterized in that the second intended TDD DL-UL configuration information further includes frequency resource information related to a start frequency and bandwidth for specifying a frequency band in which the FD is performed.

6. In paragraph 5, A method characterized in that the frequency resource information further includes configuration information for a resource block set related to the frequency band.

7. In paragraph 1, A method characterized in that the second intended TDD DL-UL configuration information further includes configuration information for a protected HD slot in which only HD (Half duplex) operation is performed.

8. In paragraph 7, A method characterized in that the first base station specifies a time period during which it is not necessary to perform an operation related to mitigation of CLI (Cross Link Interference) based on configuration information for the protection HD slot.

9. In paragraph 1, A method, characterized in that the slot in which the above SBFD operation is performed is a time period in which transmission of a DL signal in a first subband and reception of a UL signal in a second subband are performed simultaneously.

10. In paragraph 1, A method, characterized in that the first intended TDD DL-UL configuration information and the second intended TDD DL-UL configuration information are received via an Xn interface or an F1 interface.

11. A non-transitory computer-readable storage medium recording commands for performing the method described in paragraph 1. 12.RF(Radio Frequency) transmitter and receiver; and A processor connected to the RF transceiver, The processor controls the RF transceiver to transmit first intended TDD (Time Division Duplexing) DL-UL (downlink-uplink) configuration information related to the first base station to the second base station, and receives second intended TDD DL-UL configuration information related to the second base station from the second base station, A first base station, wherein the second intended TDD DL-UL configuration information includes FD (full duplex) slot configuration information for a slot in which SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex) operation is performed.

13. In a processing device controlling the first base station, at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said first base station: Transmit first intended TDD (Time Division Duplexing) DL-UL (downlink-uplink) configuration information related to the first base station to the second base station, and receive second intended TDD DL-UL configuration information related to the second base station from the second base station, A processing device, wherein the second intended TDD DL-UL configuration information includes FD (full duplex) slot configuration information for a slot in which SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex) operation is performed.

14. A step of receiving first intended TDD (Time Division Duplexing) DL-UL (downlink-uplink) configuration information related to the first base station; and comprising a step of transmitting second intended TDD DL-UL configuration information related to a second base station to the first base station, A method wherein the second intended TDD DL-UL configuration information includes FD (full duplex) slot configuration information for a slot in which the SBFD or SSFD operation is performed, based on the second base station supporting the operation of SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex). 15.RF(Radio Frequency) transmitter and receiver; and A processor connected to the RF transceiver, The processor controls the RF transceiver to receive first intended TDD (Time Division Duplexing) DL-UL (downlink-uplink) configuration information related to a first base station, and transmits second intended TDD DL-UL configuration information related to a second base station to the first base station, A second base station, wherein the second intended TDD DL-UL configuration information includes FD (full duplex) slot configuration information for a slot in which the SBFD or SSFD operation is performed, based on the second base station supporting the operation of SBFD (sub-band full duplex) or SSFD (Spectrum Sharing Full Duplex).

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