Apparatus and method for performing resource setting in wireless communication system

Abstract

According to various embodiments of the present disclosure, there is provided a method for operating a user equipment (UE) in a wireless communication system, the method comprising the steps of: receiving, from a base station (BS), a measurement command for a reference signal received power (RSRP) of a sounding reference signal (SRS) within a sub-band full duplex (SBFD) available time interval; receiving setting information on a measurement gap within a measurement time interval of the SRS from the base station; receiving the SRS in the measurement gap without receiving other downlink signals other than the SRS; and transmitting, to the base station, a report message regarding the measurement result of the RSRP for the SRS.

Description

Technical Field

[0001] The present disclosure relates to a wireless communication system. More specifically, the present disclosure relates to an apparatus and method for performing resource configuration in a wireless communication system. Background Art

[0002] In 5G, new types of services (such as extended reality (XR), AI-based services, and autonomous vehicles) are emerging, and these services have the characteristics of dynamically changing traffic in the downlink (DL) and uplink (UL) directions and requiring low latency for packet transmission. To support these various new use cases, the traffic load in 5G services will increase explosively.

[0003] On the other hand, existing semi-static or dynamic TDD UL / DL configurations have limitations such as transmission time delay and inter-operator interference. Existing FDD schemes have limitations in terms of efficient frequency resource utilization for the DL / UL direction.

[0004] Therefore, introducing full-duplex operation within a single carrier is being discussed for low latency time and efficient resource utilization in NR. Summary of the Invention

[0005] Technical Problem

[0006] To solve the above problems and other problems, the present disclosure provides an apparatus and method for performing resource configuration in a wireless communication system.

[0007] The technical objectives to be achieved by the present disclosure are not limited to those described above only by way of example, and other technical objectives not mentioned can be clearly understood by those skilled in the art to which the present disclosure pertains according to the following description.

[0008] Technical Solution

[0009] According to various embodiments of the present disclosure, a method of operating a user equipment (UE) in a wireless communication system is provided. The method includes the following steps: receiving, from a base station (BS), a command to measure a reference signal received power (RSRP) of a sounding reference signal (SRS) of another UE during a duration in which sub-band full-duplex (SBFD) is available; receiving, from the base station, configuration information on a measurement gap or downlink rate matching resources during a measurement duration of the SRS; receiving the SRS in the measurement gap or the downlink rate matching resources; and sending a report message of a measurement result of the RSRP of the SRS to the base station.

[0010] According to various embodiments of the present disclosure, there is provided a method for operating a base station in a wireless communication system, the method comprising the steps of: sending a command to a user equipment (UE) to measure a reference signal received power (RSRP) of a sounding reference signal (SRS) of another UE within a duration during which sub-band full duplex (SBFD) is available; sending, to the UE, configuration information on a measurement gap or downlink rate matching resources during a measurement duration of the SRS; and receiving, based on the measurement gap or the downlink rate matching resources, a report message of a measurement result of the RSRP of the SRS from the UE.

[0011] According to various embodiments of the present disclosure, there is provided a user equipment (UE) in a wireless communication system, the UE comprising: a transceiver; at least one processor; and at least one memory, the at least one memory being operatively connectable to the at least one processor and configured to store instructions that perform operations when executed by the at least one processor, wherein the operations include all steps of a method for operating the UE according to various embodiments of the present disclosure.

[0012] According to various embodiments of the present disclosure, there is provided a base station in a wireless communication system, the base station comprising: a transceiver; at least one processor; and at least one memory, the at least one memory being operatively connectable to the at least one processor and configured to store instructions that perform operations when executed by the at least one processor, wherein the operations include all steps of a method for operating the base station according to various embodiments of the present disclosure.

[0013] According to various embodiments of the present disclosure, there is provided a control device for controlling a user equipment (UE) in a wireless communication system, the control device comprising: at least one processor; and at least one memory, the at least one memory being operatively connectable to the at least one processor, wherein the at least one memory is configured to store instructions that perform operations when executed by the at least one processor, and the operations include all steps of a method for operating the UE according to various embodiments of the present disclosure.

[0014] According to various embodiments of the present disclosure, there is provided a control device for controlling a base station in a wireless communication system, the control device comprising: at least one processor; and at least one memory, the at least one memory being operatively connectable to the at least one processor, wherein the at least one memory is configured to store instructions that perform operations when executed by the at least one processor, and the operations include all steps of a method for operating the base station according to various embodiments of the present disclosure.

[0015] According to various embodiments of the present disclosure, one or more non-transitory computer-readable media are provided, the one or more non-transitory computer-readable media storing one or more instructions, wherein the one or more instructions are configured to perform operations based on being executed by one or more processors, and the operations include all steps of a method for operating a user equipment (UE) according to various embodiments of the present disclosure.

[0016] According to various embodiments of the present disclosure, one or more non-transitory computer-readable media are provided, the one or more non-transitory computer-readable media storing one or more instructions, wherein the one or more instructions are configured to perform operations based on being executed by one or more processors, and the operations include all steps of a method for operating a base station according to various embodiments of the present disclosure.

[0017] Advantageous Effects

[0018] To solve the above problems and other problems, the present disclosure may provide an apparatus and a method for performing resource configuration in a wireless communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings included to provide a further understanding of the present disclosure and constituting a part of the detailed description illustrate embodiments of the present disclosure and are used to explain the technical features of the present disclosure together with the description. The technical features of the present disclosure are not limited to specific drawings, and the features disclosed in each drawing may be combined with each other to form new embodiments. The reference numerals in each drawing may represent structural elements.

[0020] Figure 1 Examples of physical channels used in a system applicable to the present disclosure and a general signal transmission method using the physical channels are illustrated.

[0021] Figure 2 Examples of the structure of radio frames used in a system applicable to the present disclosure are illustrated.

[0022] Figure 3 Examples of the structure of time slots used in a system applicable to the present disclosure are illustrated.

[0023] Figure 4 Examples of the structure of time slots used in a system applicable to the present disclosure are illustrated.

[0024] Figure 5 Examples of the structure of radio frames used in a system applicable to the present disclosure are illustrated.

[0025] Figure 6An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0026] Figure 7 An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0027] Figure 8 An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0028] Figure 9 An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0029] Figure 10 An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0030] Figure 11 An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0031] Figure 12 An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0032] Figure 13 An example of information indicating downlink resources and uplink resources based on an antenna configuration in a system applicable to the present disclosure is illustrated.

[0033] Figure 14 An example of a separate Tx / Rx antenna array model in a system applicable to the present disclosure is illustrated.

[0034] Figure 15 An example of (a) conventional TDD using a shared Tx / Rx antenna array in a system applicable to the present disclosure is illustrated.

[0035] Figure 16 An example of (b) SBFD antenna configuration option 1 (method 1) in a system applicable to the present disclosure is illustrated.

[0036] Figure 17 Illustrates an example of (c) SBFD antenna configuration option 2 (Method 2-1) applicable to the system of the present disclosure.

[0037] Figure 18 Illustrates an example of (d) SBFD antenna configuration option 2 (Method 2-2) applicable to the system of the present disclosure.

[0038] Figure 19 Illustrates an example of (e) SBFD antenna configuration option 3 (Method 3-1) applicable to the system of the present disclosure.

[0039] Figure 20 Illustrates an example of (f) SBFD antenna configuration option 3 (Method 3-2) applicable to the system of the present disclosure.

[0040] Figure 21 Illustrates an example of the operation procedure of the UE applicable to the system of the present disclosure.

[0041] Figure 22 Illustrates an example of the operation procedure of the base station applicable to the system of the present disclosure.

[0042] Figure 23 Illustrates an example of the structures of the first device and the second device applicable to the system of the present disclosure. Detailed implementation manners

[0043] In various embodiments of the present disclosure, "A or B" may represent "only A", "only B", or "both A and B". In other words, in various embodiments of the present disclosure, "A or B" may be interpreted as "A and / or B". For example, in various embodiments of the present disclosure, "A, B, or C" may represent "only A", "only B", "only C", or "any combination of A, B, and C".

[0044] The slash ( / ) or comma used in various embodiments of the present disclosure may represent "and / or". For example, "A / B" may represent "A and / or B". Therefore, "A / B" may represent "only A", "only B", or "both A and B". For example, "A, B, C" may represent "A, B, or C".

[0045] In various embodiments of the present disclosure, "at least one of A and B" may represent "only A", "only B", or "both A and B". In addition, in various embodiments of the present disclosure, the expressions "at least one of A or B" or "at least one of A and / or B" may be interpreted to have the same meaning as "at least one of A and B".

[0046] In addition, in various embodiments of the present disclosure, "at least one of A, B, and C" may represent "only A", "only B", "only C", or "any combination of A, B, and C". In addition, "at least one of A, B, or C" or "at least one of A, B, and / or C" may mean "at least one of A, B, and C".

[0047] In addition, parentheses used in various embodiments of the present disclosure may represent "for example". Specifically, when describing "control information (PDCCH)", "PDCCH" may be presented as an example of "control information". In other words, "control information" in various embodiments of the present disclosure is not limited to "PDCCH", and "PDDCH" may be presented as an example of "control information". In addition, even when "control information (i.e., PDCCH)" is described, "PDCCH" may be presented as an example of "control information".

[0048] In various embodiments of the present disclosure, technical features separately described in one drawing may be implemented separately or simultaneously.

[0049] General signal transmission method in 3GPP

[0050] Physical channels and general signal transmission

[0051] Figure 1 Examples of physical channels used in a system applicable to the present disclosure and a general signal transmission method using the physical channels are illustrated. More specifically, Figure 1 Examples of physical channels and general signal transmission used in a 3GPP system are illustrated.

[0052] Figure 1 Examples of physical channels and general signal transmission used in a 3GPP system are illustrated. In a wireless communication system, a UE receives information from an eNB via a downlink (DL), and the UE transmits information to the eNB via an uplink (UL). Information transmitted and received by the eNB and the UE includes data and various control information, and there are various physical channels according to the type / usage of the information transmitted and received by the eNB and the UE.

[0053] In S11, a UE that is powered on again after a power outage or enters a new cell performs an initial cell search operation, such as synchronizing with a base station (BS). To this end, the UE receives a primary synchronization channel (PSCH) and a secondary synchronization channel (SSCH) from the base station to synchronize with the base station, and obtains information such as a cell identifier (ID). In addition, the UE may receive a physical broadcast channel (PBCH) from the base station and obtain in-cell broadcast information. The UE may receive a downlink reference signal (DL RS) in the initial cell search step to check the downlink channel state.

[0054] In S12, the UE that has completed initial cell search can receive the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) corresponding to the PDCCH to obtain more detailed system information.

[0055] Next, in S13 to S16, the UE can perform a random access procedure to complete access to the base station. Specifically, in S13 the UE can send a preamble on the Physical Random Access Channel (PRACH), and in S14 receive a Random Access Response (RAR) for the preamble on the PDCCH and the PDSCH corresponding to the PDCCH. Thereafter, in S15 the UE can use the scheduling information in the RAR to send the Physical Uplink Shared Channel (PUSCH), and in S16 perform a contention resolution procedure such as the PDCCH and the PDSCH corresponding to the PDCCH.

[0056] Next, the UE that has performed the above process can perform PDCCH / PDSCH reception S17 and PUSCH / Physical Uplink Control Channel (PUCCH) transmission S18 as a general uplink / downlink signal transmission process. The control information sent by the UE to the base station is referred to as Uplink Control Information (UCI). UCI includes Hybrid Automatic Repeat Request (HARQ) acknowledgement / negative ACK (ACK / NACK), Scheduling Request (SR), Channel State Information (CSI), etc. CSI includes Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), etc. UCI is usually sent on the PUCCH, but can also be sent on the PUSCH if it is necessary to send control information and data simultaneously. The UE can send UCI non-periodically on the PUSCH based on a network request / indication.

[0057] Orthogonal Frequency Division Multiplexing (OFDM) parameter set

[0058] The new RAT system uses an OFDM transmission scheme or a transmission scheme similar thereto. The new RAT system can follow OFDM parameters different from those of LTE. Alternatively, the new RAT system can follow the parameter set of the existing LTE / LTE-A as it is, but with a larger system bandwidth (e.g., 100 MHz). Alternatively, one cell can support multiple parameter sets. In other words, UEs operating with different parameter sets can coexist in one cell.

[0059] Radio frame structure

[0060] Figure 2 An example of the structure of a radio frame used in a system applicable to the present disclosure is illustrated.

[0061] In NR, uplink and downlink transmissions are composed of frames. A radio frame has a length of 10 ms and is defined as two 5-ms half-frames (HFs). A half-frame is defined as five 1-ms sub-frames (SFs). A sub-frame is divided into one or more time slots, and the number of time slots in a sub-frame depends on the sub-carrier spacing (SCS). Depending on the cyclic prefix (CP), each time slot includes 12 or 14 OFDM(A) symbols. When using normal CP, each time slot includes 14 symbols. When using extended CP, each time slot includes 12 symbols. The symbols can include OFDM symbols (or CP-OFDM symbols) and SC-FDMA symbols (or DFT-s-OFDM symbols).

[0062] Table 1 illustrates that when using normal CP, the number of symbols per time slot, the number of time slots per frame, and the number of time slots per sub-frame vary according to the SCS.

[0063] [Table 1]

[0064] <![CDATA[SCS(15*2 u )]]> <![CDATA[N slot symb > <![CDATA[N frame,u slot > <![CDATA[N subframe,u slot > 15KHz (u = 0) 14 10 1 30KHz (u = 1) 14 20 2 60KHz (u = 2) 14 40 4 120KHz (u = 3) 14 80 8 240KHz (u = 4) 14 160 16

[0065] N slot symb is the number of symbols in a time slot. N frame,u slot is the number of time slots in a frame. N subframe,u slot is the number of time slots in a sub-frame.

[0066] Table 2 illustrates that when using extended CP, the number of symbols per time slot, the number of time slots per frame, and the number of time slots per sub-frame vary according to the SCS.

[0067] [Table 2]

[0068] SCS (15 * 2u) <![CDATA[N slot symb > <![CDATA[N frame，u slot > <![CDATA[N subframe,u slot > 60KHz (u = 2) 12 40 4

[0069] NR supports multiple parameter sets (or sub-carrier spacings (SCSs)) for supporting various 5G services. For example, when the SCS is 15 kHz, it supports wide areas in traditional cellular bands; when the SCS is 30 kHz / 60 kHz, it supports dense cities, lower latency, and wider carrier bandwidths; and when the SCS is 60 kHz or higher, it supports bandwidths greater than 24.25 GHz to overcome phase noise.

[0070] NR frequency bands can be defined as two types of frequency ranges (FR1 and FR2). The values of the frequency ranges can change. For example, the two frequency ranges (FR1 and FR2) can be as shown in Table 3 below. For ease of description, among the frequency ranges used in the NR system, FR1 can represent the "below 6 GHz range", and FR2 can represent the "above 6 GHz range" and can be referred to as millimeter wave (mmW).

[0071] [Table 3]

[0072] Frequency range name Corresponding frequency range Subcarrier spacing FR1 450MHz - 6000MHz 15, 30, 60kHz FR2 24250MHz - 52600MHz 60, 120, 240kHz

[0073] As described above, the value of the frequency range of the NR system can be changed. For example, FR1 can include a frequency band from 410 MHz to 7125 MHz, as shown in Table 4 below. That is to say, FR1 can include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher. For example, the frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher included in FR1 can include an unlicensed frequency band. The unlicensed frequency band can be used for various purposes, such as for vehicle communication (e.g., autonomous driving).

[0074] [Table 4]

[0075] Frequency range name Corresponding frequency range Subcarrier spacing FR1 410MHz - 7125MHz 15, 30, 60kHz FR2 24250MHz - 52600MHz 60, 120, 240kHz

[0076] In the NR system, the OFDM(A) parameter set (e.g., SCS, CP length, etc.) can be configured differently between multiple cells merged into one UE. Therefore, the (absolute time) duration of the time resource (e.g., SF, time slot or TTI) composed of the same number of symbols (collectively referred to as time unit (TU) for convenience) can be configured differently between the merged cells.

[0077] Figure 3 An example of the time slot structure used in the system applicable to the present disclosure is illustrated.

[0078] A time slot includes multiple symbols in the time domain. For example, a time slot includes 7 symbols under normal CP, while a time slot includes 6 symbols under extended CP. A carrier includes multiple subcarriers in the frequency domain. A resource block (RB) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A bandwidth part (BWP) is defined as multiple consecutive (P) RBs in the frequency domain and can correspond to a parameter set (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication can be performed through the activated BWP, and only one BWP can be activated in one UE. In the resource grid, each element is called a resource element (RE), and one complex symbol can be mapped to each RE.

[0079] Figure 4 An example of the time slot structure used in the system applicable to the present disclosure is illustrated.

[0080] More specifically, Figure 4 An example of the structure of a self - contained time slot is illustrated.

[0081] In the NR system, a frame is characterized by a self - contained structure, in which all of the DL control channel, DL or UL data, and UL control channel can be included in one time slot. For example, the first N symbols in a time slot can be used to transmit the DL control channel (hereinafter referred to as the DL control region), and the last M symbols in the time slot can be used to transmit the UL control channel (hereinafter referred to as the UL control region), where N and M are integers greater than or equal to 0. The resource region between the DL control region and the UL control region (hereinafter referred to as the data region) can be used for DL data transmission or UL data transmission. For example, the following configurations can be considered. Each duration is listed in chronological order.

[0082] 1. DL - only configuration

[0083] 2. UL - only configuration

[0084] 3. Hybrid UL - DL configuration

[0085] - DL region + Guard Period (GP) + UL control region

[0086] - DL control region + GP + UL region

[0087] * DL region: (i) DL data region, (ii) DL control region + DL data region

[0088] * UL region: (i) UL data region, (ii) UL data region + UL control region

[0089] The PDCCH can be transmitted in the DL control region, and the PDSCH can be transmitted in the DL data region. The PUCCH can be transmitted in the UL control region, and the PUSCH can be transmitted in the UL data region. On the PDCCH, downlink control information (DCI) can be transmitted, such as DL data scheduling information, UL data scheduling information, etc. On the PUCCH, uplink control information (UCI) for DL data can be transmitted, such as acknowledgement / negative acknowledgement (ACK / NACK) information, channel state information (CSI), scheduling request (SR), etc. The GP provides a time gap during the process of the base station and the UE switching from the transmission mode to the reception mode or from the reception mode to the transmission mode. Some symbols at the time when DL is switched to UL in a sub - frame can be configured as the GP.

[0090] Full-duplex operation for NR

[0091] In 5G, new types of services such as extended reality (XR), AI-based services, and autonomous vehicles are emerging, and these services have the characteristics of dynamically changing traffic in both the downlink (DL) and uplink (UL) directions and requiring low latency for packet transmission. To support these various new use cases, the traffic load in 5G services will increase explosively.

[0092] On the other hand, existing semi-static or dynamic TDD UL / DL configurations have limitations such as transmission time delay and inter-operator interference. Existing FDD schemes have limitations in terms of efficient frequency resource utilization for the DL / UL directions.

[0093] Therefore, introducing full-duplex operation within a single carrier is being discussed for low latency and efficient resource utilization in NR.

[0094] Figure 5 An example of the structure of a radio frame applicable to the system of the present disclosure is illustrated.

[0095] As an example of a method for applying full-duplex within a carrier, as Figure 5 shown, sub-band full-duplex (SB-FD) and spectrum-sharing full-duplex (SS-FD) can be considered. In SB-FD, different frequency resources in the same carrier are used to perform DL and UL transmission and reception. That is, DL and UL have different frequency resources for the same time resource. In SS-FD, DL and UL transmission and reception are performed through the same frequency resources or overlapping frequency resources in the same carrier. That is, DL and UL can have the same or overlapping frequency resources for the same time resource.

[0096] This full-duplex operation can be used in combination with existing half-duplex operations. In existing half-duplex-based TDD operations, only some time resources can be used for full-duplex operation. Among the time resources for performing full-duplex operation, SB-FD or SS-FD operations can be performed.

[0097] Figure 6 An example of the structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in the system applicable to the present disclosure is illustrated.

[0098] Figure 7 An example of the structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in the system applicable to the present disclosure is illustrated.

[0099] Figure 6 and Figure 7An example is illustrated in which time resources operating in half-duplex (HD) coexist with time resources operating in full-duplex (FD) (such as SB-FD or SS-FD). In Figure 6 some of the time resources operate in SB-FD, and the remaining time resources operate in HD. In Figure 7 some of the time resources operate in SS-FD, and the remaining time resources operate in HD. In this example, the unit of the time resources can be, for example, a time slot or a symbol.

[0100] Among the time resources operating in SB-FD, some of the frequency resources are used as DL resources, and some of the frequency resources are used as UL resources. Between the DL frequency resources and the UL frequency resources, there may be a guard band (or guard frequency resources or guard subcarriers) that is not used for both DL and UL and is empty. Among the time resources operating in SF-FD, the entire frequency resources can be used for both DL and UL. Alternatively, some of the frequency resources at one or both ends of the carrier can be not used for DL and / or UL to reduce the impact of interference from other adjacent carriers (i.e., adjacent carrier interference (ACI)). That is, one or both ends of the carrier can be used as a guard band that is not used for both DL and UL. Alternatively, one or both ends of the carrier can be used only for DL transmission to reduce the impact of ACI on UL reception.

[0101] In the present disclosure, the time slot resources operating in HD are referred to as HD time slots, and the time slot resources operating in SB-FD and the time slot resources operating in SS-FD are referred to as SB-FD time slots and SS-FD time slots, respectively. Additionally, the SB-FD time slots and the SS-FD time slots are collectively referred to as FD time slots.

[0102] In the present disclosure, among all the frequency resources in the time resources operating in FD, the frequency resources operating in DL are referred to as DL subbands, and the frequency resources operating in UL are referred to as UL subbands.

[0103] In the full-duplex operation as described above, both the gNB and the UE can perform full-duplex operation. That is, both the gNB and the UE can simultaneously perform DL and UL transmission and reception using the same or different frequency resources in the same time resource. On the other hand, only the gNB can perform full-duplex operation, and the UE can perform half-duplex operation. The gNB can simultaneously perform DL and UL transmission and reception using the same or different frequency resources in the same time resource, but the UE only performs DL reception or UL transmission in a specific time resource. In this case, the gNB performs full-duplex operation by simultaneously performing DL transmission and UL reception with different UEs.

[0104] The present disclosure is generally described under the assumption that the gNB performs full-duplex operation and the UE performs half-duplex operation. However, the present disclosure can also be applied when both the gNB and the UE perform full-duplex operation.

[0105] Technical problems to be solved by the present disclosure

[0106] Hereinafter, the term network may be explained by replacing the gNB (next-generation node B) or the central unit (CU) / distributed unit (DU). The term user equipment (UE) may be explained by replacing the mobile terminal (MT) of the integrated access / backhaul (IAB) node.

[0107] Figure 8 Examples of structures in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure are illustrated.

[0108] Figure 9 Examples of structures in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure are illustrated.

[0109] Figure 10 Examples of structures in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure are illustrated.

[0110] Figure 11 Examples of structures in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure are illustrated.

[0111] In the present disclosure, it is assumed that the cell (gNB) performs both DL transmission and UL reception in the same time resource with an FD scheme such as SB-FD or SS-FD. More specifically, it is assumed that the cell performs HD operation in a first time resource and FD operation in a second time resource (which may be the remaining time resource other than the first time resource).

[0112] In the first time resource in which HD operation is performed, DL operation or UL operation is performed in all frequency resources constituting the entire system bandwidth. In the first time resource in which HD operation is performed, the network performs DL operation through the 1-1 time resource and UL operation through the 1-2 time resource. In this instance, the 1-1 time resource and the 1-2 time resource do not overlap with each other.

[0113] In the second time resource for performing the FD operation, the network performs the DL operation through all frequency resources or some frequency resources (first frequency resources) that make up the system bandwidth of the cell, and performs the UL operation through all frequency resources or some frequency resources (second frequency resources).

[0114] For example, as Figure 8 shown, the time resource for the HD operation corresponds to the first time resource, and the time resource for the SB-FD operation corresponds to the second time resource. For the first time resource, the time resource marked as DL corresponds to the 1-1 time resource, and the time resource marked as UL corresponds to the 1-2 time resource. As Figure 9 shown, for the second time resource, the frequency resource operating in DL corresponds to the first frequency resource, and the frequency resource operating in UL corresponds to the second frequency resource.

[0115] For another example, as Figure 10 shown, the time resource for the HD operation corresponds to the first time resource, and the time resource for the SS-FD operation corresponds to the second time resource. For the first time resource, the time resource marked as DL corresponds to the 1-1 time resource, and the time resource marked as UL corresponds to the 1-2 time resource. As Figure 11 shown, for the second time resource, the frequency resource operating in DL corresponds to the first frequency resource, and the frequency resource operating in UL corresponds to the second frequency resource. The frequency resource marked as DL+UL is a frequency resource capable of performing both the DL operation and the UL operation and corresponds to both the first frequency resource and the second frequency resource.

[0116] More specifically, the first frequency resource and / or the second frequency resource may have all or some of the following characteristics.

[0117] (1) When performing the SB-FD operation, the first frequency resource and the second frequency resource do not overlap with each other. This is to ensure that the DL resource and the UL resource are performed through different frequency resources. In this instance, there may be a frequency resource that does not correspond to both the first frequency resource and the second frequency resource, and this frequency resource is called a guard sub-band or a guard frequency resource. The guard frequency resource may be necessary to reduce the interference of the DL transmission on the UL reception. The guard frequency resource may be located between the first frequency resource and the second frequency resource.

[0118] (2) When performing SS-FD operation, the first frequency resource and the second frequency resource can overlap with each other. In this instance, there can be a frequency resource that does not correspond to both the first frequency resource and the second frequency resource, and this frequency resource is referred to as a guard sub-band or a guard frequency resource. The guard frequency resource may be necessary to reduce the interference from DL transmission in an adjacent carrier to UL reception and / or reduce the interference from DL transmission to UL reception in an adjacent carrier.

[0119] (3) When performing SB-FD operation, the second frequency resource can include contiguous frequency resources, and the first frequency resource can include non-contiguous frequency resources. In this instance, the first frequency resource can include multiple (e.g., two) sets of contiguous frequency resources. This is to reduce the interference from DL transmission in an adjacent carrier to UL resources by positioning the second frequency resource for UL in the center of the frequency resources constituting the cell. Conversely, the first frequency resource can include contiguous frequency resources, and the second frequency resource can include non-contiguous frequency resources. In this instance, the second frequency resource can include multiple (e.g., two) sets of contiguous frequency resources. This is to reduce the interference from DL transmission to UL resources in an adjacent carrier by positioning the second frequency resource for DL in the center of the frequency resources constituting the cell.

[0120] (4) When performing SS-FD operation, the second frequency resource can include some of the frequency resources of the first frequency resource. In this instance, the second frequency resource can include frequency resources with X fewer PRBs than the first frequency resource for one edge portion or two edge portions. This is to reduce the interference from DL transmission in an adjacent carrier to UL reception.

[0121] The network can determine / decide the above-mentioned "first time resource" and "second time resource" as well as "first frequency resource" and "second frequency resource", and provide all or part of the corresponding information to the UE. The network performs DL transmission to the UE in the "1-1 time resource within the first time resource" and the "first frequency resource within the second time resource", and performs UL reception from the UE in the "1-2 time resource within the first time resource" and the "second frequency resource within the second time resource".

[0122] The UE can receive all or part of the information about the above-mentioned "first time resource" and "second time resource" as well as "first frequency resource" and "second frequency resource" from the network, and determine the positions of the resources. The UE performs DL reception from the network through all or part of the "1-1 time resource within the first time resource" and the "first frequency resource within the second time resource", and performs UL transmission to the network through the "1-2 time resource within the first time resource" and the "second frequency resource within the second time resource".

[0123] In the existing TDD carrier of NR, the gNB performs only one of the downlink operation and the uplink operation within a specific time resource. In this instance, the gNB always operates in the downlink during the time resource for transmitting the SSB.

[0124] For a UE operating in the existing TDD operation, the following is assumed for the symbols for transmitting the SSB.

[0125] (1) The SS / PBCH transmission symbol cannot be configured as uplink through the TDD configuration (through TDD-UL-DL-ConfigCommon and / or TDD-UL-DL-ConfigDedicated).

[0126] (2) The SS / PBCH transmission symbol cannot be configured as uplink through DCI format 2_0 via the slot format indication (SFI).

[0127] (3) If the SS / PBCH is transmitted in a symbol configured as flexible through the TDD configuration (through TDD-UL-DL-ConfigCommon and / or TDD-UL-DL-ConfigDedicated), when the uplink transmission of the UE overlaps with the SS / PBCH symbol, the UE does not perform the uplink transmission. (If the sounding reference signal (SRS) overlaps with the SS / PBCH symbol in the flexible symbol, the UE does not perform SRS transmission in the overlapping symbol)

[0128] In an FDR environment such as SB-FD and SS-FD, from the perspective of the cell, both the DL resource and the UL resource can exist in the same time resource. Therefore, the gNB can perform uplink reception while performing downlink transmission.

[0129] Therefore, even when the SS / PBCH is transmitted in the time resource during which the cell performs FDR operation, the gNB can perform uplink reception while transmitting the SS / PBCH.

[0130] According to the current standard specification, the UE cannot perform uplink transmission in the symbol resource for transmitting the SS / PBCH. In this case, the FDR operation cannot be performed in the SS / PBCH transmission time resource.

[0131] TDD configuration

[0132] In the existing spectrum where TDD is performed, the base station and the UE assume half-duplex (HD) operation, and the communication between the base station and the UE is characterized by: separated time such that the time resources for performing downlink (where a signal is sent from the base station to the UE and received by the UE) do not overlap with the time resources for performing uplink (where a signal is sent from the UE to the base station and received by the base station). (Or even in the sidelink where direct communication is performed between UEs, the transmission time and reception time of the UE are also separated.) If half-duplex is supported in the spectrum where TDD is performed as described above, the base station and the UE can use all the frequency resources to be used at a specific time in the downlink or uplink. By determining which time resources will be used for the downlink or uplink and indicating this information to the UE, the UE can perform operations by determining that it will receive downlink signals in some time resources and send uplink signals at other times. For this purpose, in the LTE system, special slots (S) are defined such that all OFDM symbols of a specific time (1 ms) in units of a specific time are used for downlink (D) or uplink (U); or some of the OFDM symbols included in the OFDM symbols of a specific time are used for DL, other OFDM symbols are used for UL, and the remaining OFDM symbols are used for the gap time. The base station is designed to determine D or S or U within a specific time range, configure the TDD configuration based on this, and indicate it to the UE. For example, the base station can indicate that it is configured as DDDSU within a range of 5 ms. The TDD configuration indicated in this way is typically applied to all UEs belonging to the cell. In the NR system, the TDD configuration can be configured by specifying the positions of downlink slots and downlink OFDM symbols or flexible slots and flexible OFDM symbols or uplink slots and uplink OFDM symbols within a specific time duration, and can be indicated to the UE. The indication of the above configurations can be distinguished based on the cell-specific TDD configuration indicated via system information, the UE-specific TDD configuration indicated via UE-specific RRC signaling, and the indicator commonly indicated to the UE group.

[0133] Recently, 3GPP is studying sub-band full-duplex (SBFD), which allows simultaneous transmission and reception of DL and UL at the base station side by dividing the frequency based on each sub-band in a single carrier. In SBFD, the existing half-duplex is characterized by achieving transmission and reception in opposite directions (downlink and uplink) by differentiating frequencies in the duration used only for downlink or only for uplink. (Performing transmission and reception in opposite directions (downlink and uplink, or sidelink in both directions) by overlapping frequencies can also be referred to as full-duplex operation. This disclosure assumes that it can be applied to various full-duplex operations, not limited to SB-FD.)

[0134] In this example, it can be assumed that the base station operates in full duplex and the UE operates in half duplex. During the initial access process, the UE obtains initial synchronization from the synchronization signal and obtains the most basic information of the base station from the PBCH, then monitors the PDCCH to obtain system information and obtains the system information through the PDSCH. The system information includes the TDD configuration commonly used by UEs in the cell. When the base station performs full-duplex operation, the system information may include information related to full-duplex operation and may be indicated to the UE.

[0135] For example, the system information may include:

[0136] (1) Information notifying the time resources for performing full duplex; and

[0137] (2) Frequency resource information for each of the downlink and the uplink when performing full duplex.

[0138] The advantage of SB-FD is that it allows the base station to use DL resources and UL resources more flexibly in terms of frequency. When the DL traffic is relatively low, more UL resources can be designated and used, and when UL coverage enhancement is required, more UL resources can be designated and used.

[0139] However, if only the TDD configuration included in the existing system information is used, it may be difficult to utilize the advantage of SB-FD which aims to use more UL resources.

[0140] For example, it can be assumed that the TDD configuration is operated such that the DL occupies more time in the same way as the existing DDDSU, and some of the time resources of D allow full-duplex operation and are designated as the time resources allowing full-duplex operation. In this case, a UE performing half-duplex operation in the time resources allowing full-duplex operation can perform both downlink operation and uplink operation, but if the existing TDD configuration is followed to determine on which link to operate, the operation will clearly be determined as only downlink.

[0141] MIMO operation

[0142] In full duplex, self-interference that receives the signal of the transmitting end with a large amount of interference may be a problem. To solve this problem, various forms of self-interference suppression / cancellation methods can be used. Among these methods, there is a method of performing transmission and reception by separating the transmitting antenna and the receiving antenna. As a similar method, there is a method of reducing the amount of self-interference by configuring the beam generated from the transmitting antenna and the beam generated from the receiving antenna to be orthogonal to each other.

[0143] Problem 1

[0144] In existing TDD half-duplex, when performing DL and UL, the transmit antenna and the receive antenna can be shared. In this case, it can be assumed that the spatial channels of DL and UL are reciprocal. Using this feature, when the UE transmits SRS in UL, the base station can receive the SRS and select the transmit precoder for DL. Compared with the method in which the base station selects the DL transmit precoder based on the information about the PMI selected using CSI-RS in DL reported by the UE, this can ensure good performance. However, in the case of separating the antennas for transmission and reception in order to reduce self-interference in full-duplex, it is difficult to assume the reciprocity of the DL and UL channels. In addition, since SBFD performs transmission and reception by dividing frequencies for DL and UL, it is difficult to assume channel reciprocity even if the transmit antenna and the receive antenna are shared. In this case, a new method for selecting the DL precoder by using DL CSI-RS or by using SRS is required.

[0145] Problem 2

[0146] The number of transmit antennas and receive antennas for TDD half-duplex transmission and reception can be different from the number of transmit antennas and receive antennas for full-duplex transmission and reception. For example, the number of antennas used in TDD half-duplex is N, and a smaller number of antennas (e.g., N / 2) can be used to perform each of transmission and reception in full-duplex. In this case, in DL, the type of CSI-RS port or precoder for transmission and the maximum number of transmit ranks that can be sent can vary. In addition, the width of the transmit beam generated by the base station can vary, and the number of beams can also vary. In the case of reception by the base station, the number of transmit antennas and receive antennas for half-duplex can be different from the number of transmit antennas and receive antennas used when performing full-duplex.

[0147] Problem 3

[0148] In half-duplex, the base station can use a wideband to transmit signals. However, when the base station performs full-duplex operation by dividing frequencies or sharing frequencies to perform DL and UL transmission, the base station can apply a value different from the power density previously used for each RE. For example, when transmitting a signal at N dBm in a transmit bandwidth of W MHz, if some of the frequency bands in the band are used in DL and the transmit power remains at N dBm, the transmit power that can be used for each unit frequency can be much higher than when using a widebandwidth. In this case, the signal quality for each unit frequency is different from before, and when the transmit power quality changes, the UE preferably selects an appropriate transmission rank, MCS, etc. by measuring and reporting the signal quality.

[0149] CLI measurement and reporting

[0150] In the method for measuring the UE-to-UE CLI between cells under dynamic TDD, it is assumed that the victim UE receives and measures the signal of the attacker UE during the process of receiving DL in the active BWP. However, when the base station performs full-duplex operation, especially when the base station operates in full-duplex and the UE operates in half-duplex by dividing frequencies, cross-link interference may occur between UEs within the cell. When a specific UE receives the DL signal and other UEs transmit UL signals simultaneously, the uplink (UL) transmit (Tx) signal is sent as an interference signal to other UEs. Specifically, when performing SB-FD, the signal transmitted by a certain UE at a certain frequency acts as an inter-subband interference received by another UE at a different frequency. Since the interference signal is a signal transmitted by the UE and flowing into the adjacent frequency band, it is difficult to grasp the characteristics of the channel or the signal. Therefore, there is a disadvantage that it is difficult to distinguish the user who generates the interference. A method for facilitating SRS-RSRP measurement and CLI-RSSI measurement is needed.

[0151] Additional advantages, objects, and features of the present disclosure will be partly set forth in the following description, and partly will become apparent to those skilled in the art from the following review, or may be learned from the practice of the present disclosure. The objects and other advantages of the present disclosure may be realized and obtained by the structure particularly pointed out in the written description and claims and the drawings.

[0152] Detailed description of the present invention

[0153] Based on the embodiments of the present disclosure described with reference to the accompanying drawings, the configuration, operation, and other features of the present disclosure will be understood.

[0154] Figure 12 An example of a structure in which resources operating in half-duplex (HD) and resources operating in full-duplex (FD) (such as SB-FD or SS-FD) coexist in a system applicable to the present disclosure is illustrated.

[0155] The present disclosure is described under the assumption of SB-FD operation, in which the cell simultaneously performs DL and UL using different frequency resources (sub-bands) in the same time resource. However, the present disclosure can also be applied when the cell performs SS-FD operation.

[0156] When the cell operates in SBFD, there may be frequency resources (i.e., DL sub-bands and / or guard sub-bands) that cannot be used for UL operation within the UL BWP resources in which the UE operates. For example, in Figure 12 BWP1 only includes DL or UL frequency resources in the HD time slot, but in the SBFD time slot, DL frequency resources and UL frequency resources coexist.

[0157] Existing TDD can allow SBFD operations to be performed during a part of the duration including DL frequency resources or UL frequency resources (e.g., some DL resources in the DL resources or all or some time resources in the time resources indicated as flexible). During the duration allowing SBFD operations, the frequency resources can regard the DL and UL frequency resources and the UL frequency resources as DL sub-bands and UL sub-bands respectively.

[0158] As Figure 12 shown, BWP2 can specify the frequency resources for operation in DL or UL. In this case, as in existing TDD, only DL operation or UL operation is possible. On the other hand, BWP1 is characterized by including a duration only for DL, or only for UL, or a duration during which DL sub-bands and UL sub-bands can be performed simultaneously. Here, some or all of the time resources in the time resources only for DL / only for UL / SBFD (DL sub-bands + UL sub-bands) can be included in BWP1.

[0159] Configurations for configuring UL sub-bands and DL sub-bands or guard bands can be indicated from the base station to the UE via a higher layer signal (e.g., system information, RRC signaling). If guard band information is indicated, the DL sub-band can be inferred from the guard band and UL sub-band information.

[0160] For example, the DL BWP and UL BWP can include indicators indicating the existing BW. In addition, an indicator indicating the BW of the sub-band can be added, and the common area of the DL sub-band / UL sub-band indicator and the existing BW indicator indicated via the higher layer signal can be determined as the DL sub-band area / UL sub-band area of the DL BWP and UL BWP. As described above, a specific BWP can include two frequency bandwidths.

[0161] As in Figure 12 BWP1, the UL sub-band of the UL BWP can exist in a different area from the DL sub-band of the DL BWP. In other words, the UL BWP with a UL sub-band can exist outside the DL BWP with the DL sub-band of BWP1. As described above, the DL BWP with a DL sub-band and the UL BWP with a UL sub-band can form a BWP pair.

[0162] As in Figure 12 BWP2, there can be a DL BWP / UL BWP, and BWP1 can exist in an adjacent frequency band. The UL sub-band of BWP1 can exist at a frequency adjacent to or slightly away from the DL area of DL BWP2.

[0163] If a UE that can identify the SBFD operation of a base station is specified with a sub - band configuration for the SBFD operation and time resources for the SBFD operation, the base station can identify that the UE performs the SBFD operation in a specific time resource and can operate considering the configuration of information additionally indicated for the SBFD operation in the specific time resource (e.g., frequency resource allocation, UE Tx power control, gNB Tx power, UE Tx timing, SRS / PUCCH / PUSCH, frequency hopping, CSI - RS configuration, CSI reporting, MIMO configuration, BWP, CG PUSCH, PUSCH repetition, RACH occasion, etc.).

[0164] Embodiment 1: TDD resource configuration method and transceiver operation for full-duplex support

[0165] Proposal 1 - 1. In addition to the existing cell - specific TDD configuration (common for TDD UL / DL configuration), a new cell - specific TDD configuration that can be interpreted by UEs with new capabilities is additionally indicated.

[0166] The existing TDD configuration of traditional UEs can be used.

[0167] A UE with new capabilities (where the UE identifies that the base station performs the FD operation and can use time / frequency / space resources based on the FD operation) can follow the existing TDD configuration or follow the new TDD configuration. For this, the base station can allow the UE to select the TDD configuration or indicate to the UE to use a specific TDD configuration.

[0168] (1) When allowing the UE to make a selection, it is necessary to report to the base station which TDD configuration the UE has selected. For this, the base station can allocate separate RACH resources. A UE that selects the RACH resources and performs the RACH procedure can be considered to have selected the new TDD configuration and can then perform the new TDD configuration and the RACH procedure in the time / frequency resources indicated for full - duplex and the semi - duplex frequency resources in PDCCH monitoring as well as msg2 PDSCH, msg3 PUSCH, and msg4 PDSCH - PUCCH. Thereafter, operations in the initial BWP can also be performed in the above method.

[0169] (2) The UE can be indicated to use a specific TDD configuration. The UE can be indicated which of the existing TDD configuration and the new TDD configuration to use. For example, the TDD configuration can be specified for each BWP.

[0170] (3) In the case of forcing the UE to use only a specific TDD configuration, if the specific TDD configuration is indicated to the UE or selected by the UE, the UE can operate only with the specific TDD configuration regardless of the BWP. Even if a TDD configuration is specified for each BWP, when the TDD configuration to be used in the BWP is not indicated, the TDD configuration to be used can be determined by default.

[0171] If a new cell-specific TDD configuration is indicated, the method for updating it can be as follows.

[0172] (1) If a new cell-specific TDD configuration is indicated, when updating the TDD configuration using the UE-specific TDD configuration or SFI, it can include an indicator indicating whether to update the existing TDD configuration (the previous version of the TDD configuration) or the new TDD configuration.

[0173] (2) Alternatively, if a new cell-specific TDD configuration is indicated, the TDD configuration can be updated based on the new UE-specific TDD configuration.

[0174] The method for configuring the new cell-specific TDD configuration can be as follows.

[0175] (1) The new cell-specific TDD configuration can be indicated independently. The duration of the configuration can be different from the duration of the existing configuration. If no duration is given, it can be the same as the duration of the existing cell-specific TDD configuration.

[0176] (2) The new cell-specific TDD configuration can indicate whether the downlink or the uplink can be used for the time resources specified when full-duplex operation is possible within the existing TDD configuration. Alternatively, the new cell-specific TDD configuration can specify D, F, and U separately from the existing TDD configuration.

[0177] (3) If no reference SCS is given for the new cell-specific TDD configuration, the reference SCS can follow the reference SCS of the existing cell-specific TDD configuration.

[0178] The base station can indicate to the UE the time resources during which the base station can perform the SBFD operation. If the base station indicates to the UE the time resources during which the base station can perform the SBFD operation, the UE can assume that the base station performs the SBFD operation and can perform DL reception or UL transmission in the sub-band DL / sub-band UL region, respectively. The indicator of the time resources during which the base station can perform the SBFD operation can be sent to the UE as a cell-specific configuration and can be specifically sent via higher-layer signaling including system information. For example, the indicator of the time resources during which the base station can perform the SBFD operation can be sent via the UE RRC signal.

[0179] System information may include cell-specific TDD configuration. In the cell-specific TDD configuration, SBFD operation may be indicated in DL or flexibly indicated time resources. In UL time resources, the UE was previously configured to transmit at a lower power than the base station. However, if the base station performs DL transmission at a high power in UL time resources, interference signals with significantly high power may be generated in adjacent cells. Therefore, it is not preferred to indicate the execution of SBFD operation in UL time resources.

[0180] If it is indicated that the base station performs SBFD operation in some or all of the resources in the DL or flexible region with the existing TDD configuration, it can be assumed that the UE can perform DL reception or UL transmission in the time resources where the SBFD operation of the base station is indicated. In the prior art, since the base station in half-duplex performs DL transmission in the DL region with the TDD configuration, the UE has already expected DL reception. However, the UE can perform UL transmission as well as DL reception in the time resources where the base station is indicated to perform SBFD operation.

[0181] In the flexible region, the UE can basically perform DL reception, but the UE can also perform UL transmission based on the indication of the base station. Based on the indicator that can be indicated as DL resources or UL resources in the flexible resources, the UE can perform DL reception or UL transmission. If it is indicated that the base station performs SBFD operation in the flexible region, in the time resources where the base station performs SBFD operation, the UE expects to perform at least sub-band UL transmission, and can also perform wideband UL transmission. However, if it has been indicated that the base station performs SBFD operation in the flexible region, and then UL is specified through configuration such as UE RRC signal or SFI, the UE can assume that the base station performs existing half-duplex UL reception, or can assume that the base station performs existing half-duplex wideband UL transmission. In addition, the UE may not expect the base station to perform full-duplex sub-band UL reception operation, or the UE may not expect the base station to perform sub-band UL transmission operation. The UE may expect the base station not to perform full-duplex sub-band UL reception operation, or the UE may expect the base station not to perform sub-band UL transmission operation.

[0182] If the time resources during which the base station can perform full-duplex operation are indicated to the UE, and the RACH configuration enabling RACH transmission through the time resources during which the base station can perform full-duplex operation is indicated to the UE, the UE can perform RACH transmission in the UL frequency domain of full-duplex. If, in addition to the existing TDD configuration, an indicator of the time domain during which the base station can perform full-duplex operation is sent to the UE, the UE can selectively perform DL reception or UL transmission in the time domain during which the base station can perform full-duplex operation if no additional TDD configuration is indicated. For example, if the UE performs RACH transmission, the UE can use the RACH opportunity defined in the UL frequency resources included in the full-duplex time resources, which are at least several symbols after DL reception. If the UE transmits RACH in the UL frequency resources included in the full-duplex time resources, the UE can perform RACH preamble retransmission through the RACH opportunity specified in the RACH configuration.

[0183] If the base station indicates to the UE the time resources during which the base station performs full-duplex operation, and the UE performs RACH operation in the time resources during which the base station performs full-duplex operation, the PDCCH monitoring or RACH opportunity information for msg2 RAR reception and whether to specify the PDSCH frequency resources (DL sub-bands of SBFD time slots, DL frequency resources other than SBFD) or the frequency duration for msg3 PUSCH transmission (UL sub-bands of SBFD time slots, UL frequency resources other than SBFD) or the frequency resources for PDCCH monitoring and msg4 PDSCH reception, the frequency position of PUCCH transmission for msg4 PDSCH, or the PUCCH resources, etc., can be indicated to the UE.

[0184] Alternatively, some of the preambles among the existing RACH opportunities can be indicated to the UE that knows and can perform the full-duplex operation of the base station, and the base station can allow the RACH preamble to be sent to the UE.

[0185] If the UE sends a RACH preamble using the RACH opportunity specified in the full-duplex time resource or by specifying some preambles of the existing RACH opportunity, the UE may perform PDCCH monitoring in the time resource capable of full-duplex or semi-duplex at the base station to receive the RAR. If the time resource for msg3 PUSCH transmission is specified in the RAR message, in the method of the UL transmission frequency resource location or UL hopping in the time resource where the base station indicates to the UE that the base station can perform the SBFD operation based on the location of the time resource, the UE may follow the indicator for full-duplex, and the UE may interpret and transmit by following the existing indicator in the non-SBFD time resource. For Msg4 PDSCH, for the PUCCH transmission of Msg4 PDSCH, based on whether the base station can perform full-duplex operation or semi-duplex operation, the UE may perform reception and transmission suitable for the time resource by considering the frequency domain / antenna information / UL hopping and additional information related to full-duplex.

[0186] Figure 13 Examples of information indicating downlink resources and uplink resources based on antenna configuration applicable to the system of the present disclosure are illustrated.

[0187] Embodiment 2: MIMO technology and transceiver operation for half-duplex and full-duplex support

[0188] When the base station performs full-duplex (SBFD or SSFD), the base station may use antennas dedicated to each link direction to simultaneously perform DL transmission and UL reception. To this end, at least two separate antennas or antenna sets or panels may be used. At a specific time, only DL transmission or only UL reception may be performed. In this instance, the base station may use some of the at least two separate antennas or antenna sets or panels. Alternatively, the base station may use all antennas or antenna sets or panels to perform transmission or reception. Alternatively, the base station may use the same antenna to simultaneously perform DL / UL. If the UE supports full-duplex operation, separate antennas may be used for DL reception and UL transmission, or one antenna may be used to perform DL reception and UL transmission.

[0189] A base station supporting full-duplex operation notifies a UE that knows whether the base station can perform full-duplex operation of whether the base station can perform full-duplex operation via a high-layer signal (e.g., system information, RRC signal, etc.). If the base station notifies the UE of whether the base station can perform full-duplex operation, additional information for full-duplex operation can be sent to the UE. For example, the UE can be additionally indicated CSI-RS configuration, SRS configuration, frequency hopping, MIMO configuration (number of antennas, codebook, etc.), DL Tx power information, etc. In the case where the user is in the RRC connected state, each piece of information can be additionally indicated in a configuration including configurations such as DL / UL.

[0190] The base station can send time information for performing full-duplex operation to the UE. The UE that receives the time information for performing full-duplex operation can determine that the base station will perform full-duplex operation in the indicated time resource, and can use the time information for performing full-duplex operation to receive DL signals or send UL signals.

[0191] Proposal 2-1. DL signal and UL SRS transmission resources

[0192] The base station separately indicates to the UE information about the signal to be received in a specific duration (e.g., the duration during which half-duplex may be possible or the duration during which full-duplex may be possible) or information about the signal to be sent in the specific duration. Alternatively, the base station indicates the following information: configuring the DL signal or UL SRS used only during the half-duplex duration; or configuring the DL signal and / or UL signal used during the half-duplex duration and the full-duplex duration; or configuring the DL signal and / or UL signal used during the full-duplex duration.

[0193] The base station designates the source of the TCI state among the candidate reference signals available during the half-duplex duration in half-duplex and designates the source of the TCI-state among the candidate reference signals available during the full-duplex duration in full-duplex.

[0194] Figure 13 An example is illustrated in which, for SBFD where the frequency resources are divided (F1, F2) and are respectively used for DL purposes and UL purposes, (F1, F2) is (D D) when the frequency resource is only used for DL, (F1, F2) is (U U) when the frequency resource is only used for UL, and (F1, F2) is (D U) or (U D) when the frequency resource is respectively used for DL and UL, and each of the multiple antennas (A1, A2) is used by frequency and by direction.

[0195] Figure 13 The information, for example, indicates to perform one of the following operations:

[0196] (Operation 1) Only DL (DD) in all F1 and F2 via antenna 1 (A1)

[0197] (Operation 2) Only UL (UU) in all F1 and F2 via antenna 1 (A1)

[0198] (Operation 3) Only DL (DD) in all F1 and F2 via antenna 2 (A2)

[0199] (Operation 4) Only UL (UU) in all F1 and F2 via antenna 2 (A2)

[0200] (Operation 5) DL in F1 via antenna 1 (A1) and UL in F2 via antenna 2 (A2)

[0201] (Operation 6) DL in F1 via antenna 2 (A2) and UL in F2 via antenna 1 (A1)

[0202] When the base station only uses antenna 1 as in (Operation 1) and (Operation 2) while performing half-duplex, or when the base station performs full-duplex and uses antenna 1 to perform F1 DL and uses antenna 2 to perform F2 UL as in (Operation 5), the DL of antenna 1 and F1 in (Operation 5) of full-duplex can assume the reciprocity of the channel with the UL of antenna 1 and F1 in (Operation 2) of half-duplex.

[0203] On the other hand, it is difficult to assume the reciprocity of antenna 2 and F2 UL in (Operation 5) of full-duplex with any DL in (Operation 1) and (Operation 2).

[0204] The advantage of TDD is that it obtains spatial information from the signal received in the UL by utilizing the reciprocity characteristics of the DL channel and the UL channel, and calculates and applies the beamforming weights transmitted in the DL. However, in this case, it becomes difficult to perform DL transmission using the signal of A2 UL in (Operation 5) in full-duplex.

[0205] Another advantage of TDD is that the UE can find a receive (Rx) beam suitable for DL reception while receiving the DL signal, and can use the reciprocity characteristics of DL and UL to use the receive beam as the UL transmission beam. The reference signal as the basis for DL reception can be SSB / PBCH or CSI-RS, and when transmitting SRS using the Rx beam of the UE obtained based on the reference signal, the Tx beam information used in SRS can be used to transmit another UL signal. However, when the UE transmits UL in F2 of (Operation 5) in full-duplex, it is difficult for the UE to assume the reciprocity between the DL signal and the UL signal because the base station antenna A2 for receiving UL and the antenna A1 for transmitting DL are different from each other.

[0206] Only DL or only UL has been described above using one of antennas A1 and A2. However, when both antennas A1 and A2 are used for only DL transmission and only UL reception, there are cases where reciprocity is difficult to establish even when A1 or A2 is used for each of DL and UL. As a method of solving this problem, if only DL or only UL is performed using a specific antenna in half-duplex, (1) only A1 DL transmission and only UL reception, and (2) only A2 DL transmission and only UL reception can be performed, and in full-duplex, (3) A1 DL transmission and A2 UL reception, and (4) A1 UL reception and A2 DL transmission can all be performed. Thus, full-duplex A2 UL reception can be performed in half-duplex A2 only DL transmission, and reciprocity between the two can be guaranteed. The same applies to other cases. For this operation, the base station needs to notify the UE of information on the mapping relationship between the source resource of the TCI-state and a specific SRS.

[0207] Proposal 2-2. TCI-state or SRI indication

[0208] When there are multiple TCI-states or SRIs, the base station configures the TCI-state or SRI to be used in time resources capable of full-duplex and indicates it to the UE. Specifically, when transmission and reception are indicated by a single resource indicator (such as repeated transmission or configured grant) and are performed multiple times, information such as the TCI-state or SRI used in the time resources capable of half-duplex and the time resources capable of full-duplex is configured and indicated to the UE, and the UE performs transmission and reception based on this information.

[0209] Proposal 2-3. Antenna configuration

[0210] The base station additionally indicates the antenna configuration or the configuration related to MIMO, as in Figure 13 the embodiment. The configuration of the additional indication for which time resource it is specified can be made. Alternatively, if there is an indicator indicating that it is a time resource capable of full-duplex, the UE assumes that it can be used in the time resource specified according to the indicator.

[0211] Proposal 2-4. DL power

[0212] The base station indicates the value of the DL power in the time resources using SBFD to the UE. The indication of the DL power can be made in various ways. For example, it can indicate how much power difference there is compared to the transmission power of a specific signal (e.g., SSB or CSI-RS).

[0213] However, as described above, when the base station indicates additional information related to DL transmission to the UE, it can be assumed that the value of the DL power is used in the frequency resources for DL in the time resources indicated to be applied to SB-FD.

[0214] Figure 14 Illustrates an example of a separate Tx / Rx antenna array model applicable to the system of the present disclosure.

[0215] Figure 15 Illustrates an example of (a) conventional TDD using a shared Tx / Rx antenna array applicable to the system of the present disclosure.

[0216] Figure 16 Illustrates an example of (b) SBFD antenna configuration option 1 (Method 1) applicable to the system of the present disclosure.

[0217] Figure 17 Illustrates an example of (c) SBFD antenna configuration option 2 (Method 2-1) applicable to the system of the present disclosure.

[0218] Figure 18 Illustrates an example of (d) SBFD antenna configuration option 2 (Method 2-2) applicable to the system of the present disclosure.

[0219] Figure 19 Illustrates an example of (e) SBFD antenna configuration option 3 (Method 3-1) applicable to the system of the present disclosure.

[0220] Figure 20 Illustrates an example of (f) SBFD antenna configuration option 3 (Method 3-2) applicable to the system of the present disclosure.

[0221] Figures 15 to 20 Illustrates examples of antenna configurations for conventional TDD and SBFD.

[0222] The following is part of 3GPP TR38.858v1.0.0 (September 2023).

[0223] TR 38.858v1.0.0

[0224] 6.1.2 Effects and potential enhancements for transmission and reception

[0225] Studies the effects and potential enhancements for UL transmission and DL reception for SBFD symbols and non-SBFD symbols across at least including the following:

[0226] - PDCCH, scheduled / configured PUCCH / PUSCH / PDSCH, without repetition in SBFD symbols and non-SBFD symbols

[0227] - Scheduled / configured SRS / CSI-RS in SBFD symbols and non-SBFD symbols

[0228] -Scheduled / configured TBoMS across SBFD symbols with or without repetition and non-SBFD symbols

[0229] -Multi-PUSCH / PDSCH scheduled by a single DCI in SBFD symbols and non-SBFD symbols

[0230] -Scheduled / configured PDSCH / PUSCH / PUCCH with repetition across SBFD symbols and non-SBFD symbols

[0231] Note: Consider inter-slot / intra-slot / inter-repetition / inter-group hopping of DMRS bundles for PUSCH / PUCCH (if applicable).

[0232] Examples of potential enhancements include:

[0233] -Resource allocation in the frequency domain including hopping

[0234] -Resource allocation in the time domain

[0235] -Power domain

[0236] -Spatial domain

[0237] RAN1 studied the impact and benefits of potential enhancements to resource allocation in the frequency domain for SBFD operations, considering the misaligned boundaries between resource block groups / reporting subbands and SBFD subbands, including at least the following items:

[0238] -RBG for PDSCH RA type 0

[0239] -CSI reporting configuration

[0240] -CSI-RS resource configuration

[0241] -PRG for PDSCH

[0242] For resource allocation in the frequency domain in the case of misaligned boundaries between RBG and SBFD subbands, RAN1 studied whether a part of the DL RBG inside / outside the DL subband and a part of the UL RBG inside / outside the UL subband could be used. It is agreed that for SBFD-aware UEs, a part of the DL RBG inside the DL subband can be used, and a part of the UL RBG inside the UL subband can be used to achieve better resource utilization. It is agreed that at least for semi-static SBFD, a part of the RBG outside the DL subband cannot be used for DL reception, and a part of the RBG outside the UL subband cannot be used for UL transmission.

[0243] For semi-static SBFD, for CSI reporting sub-bands that overlap with the SBFD sub-band boundaries, it is agreed that CSI reports are obtained based on CSI-RS resources excluding the CSI-RS resources in the DL sub-bands used for SBFD-aware UEs.

[0244] For semi-static SBFD, for CSI-RS resources that overlap with the SBFD sub-band boundaries, it is agreed that only the CSI-RS resources within the DL sub-band are valid for SBFD-aware UEs.

[0245] For SBFD-aware UEs, at least the following issues regarding PDSCH have been studied:

[0246] PRGs of sizes 2 and 4 that overlap with the sub-band boundaries

[0247] Wideband precoders in the case of discontinuous DL sub-bands

[0248] For PRGs that overlap with the sub-band boundaries, if a part of the DL PRG within the DL sub-band can be used, better scheduling flexibility and resource utilization can be achieved. However, due to the limited RBs in the partial PRG, a degraded channel estimation quality in the partial PRG is expected compared to the PRG. Note that if this feature is supported, the UE complexity may increase.

[0249] If the PRG is determined to be wideband, the following two options are studied.

[0250] Option 1: Discontinuous frequency resources across two DL sub-bands can be allocated, but the frequency resources within each DL sub-band are continuous

[0251] Option 2: Discontinuous frequency resources across two DL sub-bands cannot be allocated

[0252] It is agreed that Option 1 can achieve better scheduling flexibility and higher DL data rates. Compared with Option 2, Option 1 requires the UE to handle two discontinuous segments of continuous RBs, which may increase the UE complexity for channel estimation.

[0253] The frequency resource allocation of CSI-RS across downlink sub-bands for SBFD-aware UEs is studied considering the following options:

[0254] - Option 1: Two consecutive linked CSI-RS resources

[0255] - Option 2: One CSI-RS resource

[0256] - Option 2-1: Discontinuous CSI-RS resource allocation

[0257] - Option 2-2: One continuous CSI-RS resource allocation with discontinuous CSI-RS resources obtained by excluding frequency resources outside the DL sub-bands

[0258] For all options, there is no impact on CSI-RS sequence generation. Option 1 requires additional signaling to link two CSI-RS resources in two DL sub-bands. Option 2-1 requires a new RRC structure to configure discontinuous RBs for one CSI-RS resource, which may require additional signaling overhead. Option 2-2 can reuse the existing signaling design configured for CSI-RS resources. Option 2-2 can be used to address potential misaligned boundaries between CSI-RS resource configuration and SBFD sub-bands. Further discussion on UE complexity is needed due to the maximum number of configured CSI-RS resources and / or UE capabilities for handling discontinuous CSI-RS.

[0259] For UL transmission and DL reception across SBFD symbols and non-SBFD symbols in different time slots (each transmission / reception within a time slot has all SBFD symbols or all non-SBFD symbols), the following options are studied for SBFD-aware UEs:

[0260] - Option 1: Transmission / reception is limited to only SBFD symbols or only non-SBFD symbols

[0261] - Option 2: Transmission / reception can be in SBFD symbols and non-SBFD symbols

[0262] UL transmission and DL reception across SBFD symbols and non-SBFD symbols include the following:

[0263] - PDSCH / PUSCH / PUCCH repetition

[0264] - SPS PDSCH / CG PUSCH

[0265] - TBoMS

[0266] - Multiple PUSCH / PDSCH scheduled by a single DCI

[0267] - Periodic / semi-persistent SRS / CSI-RS / PUCCH

[0268] - PDCCH

[0269] Option 1 can be implemented through gNB configuration or scheduling to ensure that all transmission / reception opportunities are limited to SBFD symbols or non-SBFD symbols. Alternatively, Option 1 can be implemented through additional indication or rules to determine that the transmission / reception opportunity is valid within one symbol type and invalid within the other symbol type. The frequency resources, power control, and beam / space relationship for all transmission / reception opportunities can be the same for Option 1, but can be different for Option 2. If they are different, additional specification work may be required. If the transmission / reception in the other symbol type is postponed, Option 1 may or may not increase the transmission / reception latency, and if the transmission / reception in the other symbol type is discarded, Option 1 may reduce the performance. Option 2 may or may not reduce the transmission / reception latency and may improve the coverage.

[0270] For UL transmission and DL reception across SBFD symbols and non-SBFD symbols in different time slots (each transmission / reception within a time slot has all SBFD symbols or all non-SBFD symbols), if the transmission / reception can be in SBFD symbols and non-SBFD symbols with different available resources, study at least the following frequency resource allocation options for PDSCH, CSI-RS, PUSCH, PUCH, SRS for SBFD-aware UEs.

[0271] Option 1: Separate FDRA determination for SBFD time slots and non-SBFD time slots.

[0272] Option 1-1: Separate FDRA configuration / indication for SBFD time slots and non-SBFD time slots

[0273] Option 1-2: Separate frequency resource options determined for SBFD time slots and non-SBFD time slots based on a single FDRA configuration / indication Option 1-3: Single FDRA configuration / indication and RB offset

[0274] Option 2: Perform rate matching or puncturing on RBs outside the DL / UL subbands for DL / UL channels / signals.

[0275] Option 3: Discard or postpone DL / UL channels / signals overlapping with RBs outside the DL / UL subbands in SBFD time slots.

[0276] Note: Different options can be studied for different signals / channels.

[0277] RAN1 studied whether the transmission / reception opportunities of physical channels / signals can be mapped to SBFD symbols and non-SBFD symbols within a time slot for a UE, and whether the UE can perform transmission / reception at the opportunities mapped to SBFD symbols and non-SBFD symbols, including:

[0278] - Use cases including the positions and quantities of transition points between SBFD symbols and non-SBFD symbols in time slots.

[0279] - Potential benefits (if any)

[0280] - Phase continuity

[0281] - Potential interruptions in transmission / reception during transitions

[0282] - Required guard time (if any)

[0283] - Potential impact on performance

[0284] - Impact on link adaptation, channel estimation, and other processes

[0285] - UL transmission timing (if any)

[0286] - Implementation complexity

[0287] - Applicability to SBFD-aware UEs and non-SBFD-aware UEs

[0288] - Note: There are scenarios where more than one transmission overlaps with SBFD symbols and non-SBFD symbols, and some may or may not face the aspects listed above.

[0289] - Note: This study does not imply RAN1 conventions regarding time slots composed of SBFD symbols and non-SBFD symbols.

[0290] For physical channel / signal timing (if any) mapped to SBFD symbols and non-SBFD symbols within a time slot, the following options for UE transmission / reception can be considered during the specification phase.

[0291] Option 1: The UE does not transmit or receive physical channels / signals within the time slot.

[0292] Option 2: The UE can transmit or receive physical channels / signals within the time slot only under certain conditions.

[0293] The conditions can depend at least on the following: whether phase continuity can be maintained across SBFD symbols and non-SBFD symbols, whether there are the same or different transmission / reception parameters (e.g., power control, spatial / QCL, UL timing, etc. applied in SBFD symbols and non-SBFD symbols), and whether there is a guard period between SBFD symbols and non-SBFD symbols, etc.

[0294] Other options are not excluded.

[0295] For SBFD-aware UEs, in the case where CSI-RS instances appear in both SBFD symbols and non-SBFD symbols in a periodic manner (each CSI-RS resource within a time slot has all SBFD symbols or all non-SBFD symbols), study the following options for CSI reporting associated with periodic / semi-persistent CSI-RS:

[0296] Option 1: Two CSI-ReportConfigs, one associated with SBFD symbols and the other associated with non-SBFD symbols

[0297] Option 1-1: One CSI-ReportConfig is associated with a CSI-RS limited to SBFD symbols, and a second CSI-ReportConfig is associated with a second CSI-RS limited to non-SBFD symbols;

[0298] Option 1-2: Two CSI-ReportConfigs are associated with the same CSI-RS. The CSI report associated with one CSI-ReportConfig is obtained only based on CSI-RS instances in SBFD symbols. The CSI report associated with the second CSI-ReportConfig is obtained only based on CSI-RS instances in non-SBFD symbols.

[0299] Option 2: One CSI-ReportConfig associated with both SBFD symbols and non-SBFD symbols

[0300] Option 2-1: One CSI-ReportConfig is associated with two CSI-RSs limited to SBFD symbols and non-SBFD symbols respectively. Separate CSI measurement results are obtained based on the first CSI-RS and the second CSI-RS respectively.

[0301] Option 2-2: One CSI-ReportConfig is associated with one CSI-RS. The CSI report is obtained based on the CSI-RS, which can be in SBFD symbols or non-SBFD symbols at different time instances.

[0302] Note that whether a CSI-RS resource can be used for SBFD symbols and non-SBFD symbols can depend on, for example, the gNB implementation of the same / different antenna configurations in the two types of symbols.

[0303] According to the existing specifications, Option 1-1 can be supported by gNB configuration with appropriate periodicity to ensure that the CSI-RS associated with each CSI-ReportConfig is limited to SBFD symbols or non-SBFD symbols. However, it may limit the gNB configuration flexibility, and enhancements can be considered through additional indications or rules to determine that the CSI-RS is valid within one symbol type and invalid in the other symbol type.

[0304] Option 2-2 can be supported according to the existing specifications to configure measurement limitations so that the UE does not average CSI measurement results across SBFD symbols and non-SBFD symbols.

[0305] It may be beneficial to have separate resources, FH parameters, UL power control parameters, and / or beam / space relationships for SRS, PUCCH, and PUSCH on SBFD symbols and non-SBFD symbols in different time slots.

[0306] The gNB can configure the CORESET and search space in such a way that the MO of the search space appears in SBFD symbols or non-SBFD symbols, or the MO of the search space appears in both SBFD symbols and non-SBFD symbols, but the associated CORESET does not overlap with the boundary of the DL sub-band in SBFD symbols.

[0307] If it is beneficial to agree that the CORESET and search space are configured such that the MO of the search space appears in both SBFD symbols and non-SBFD symbols and the associated CORESET overlaps with the boundary of the DL sub-band in SBFD symbols, then for SBFD-aware UEs, at least the following options can be considered:

[0308] Option 1: Separate the valid resources for the CORESET in SBFD symbols and non-SBFD symbols.

[0309] Option 2: Perform rate matching or puncturing on the REGs of the PDCCH outside the DL sub-band.

[0310] Option 3: If the UE is mapped to one or more REs that overlap with the REs outside the DL sub-band, the UE does not monitor PDCCH candidates.

[0311] Option 4: Discard the search space when the associated CORESET overlaps with the RB outside the DL sub-band

[0312] Option 5: Separate the search space associated with the CORESET in SBFD symbols and non-SBFD symbols

[0313] Note: These options apply at least to USS.

[0314] 7.2 Evaluation Method

[0315] 7.2.1 System-Level Simulation

[0316] gNB Antenna Configuration

[0317] The detailed gNB antenna configuration for SBFD evaluation can be found in Appendix A.5.

[0318] Appendix A.5

[0319] A.5 gNB Antenna Configuration and Transmit Power for SBFD

[0320] For the evaluation of traditional TDD operation, the BS uses the same antenna array for downlink transmission and uplink reception, which can be referred to as the shared Tx / Rx antenna array for describing the evaluation assumptions. For the evaluation of SBFD operation, the BS uses separate panels for simultaneous downlink transmission and uplink reception, which can be referred to as the separate Tx / Rx antenna array for describing the evaluation assumptions.

[0321] The separate Tx / Rx antenna array for describing the evaluation assumptions can be modeled by two panels, as Figure 14 shown.

[0322] - Traditional parameters (M, N, P, M g , N g ), (d H , d V ) and (d g,H , d g,V ) are used to describe each panel group:

[0323] - M: The number of vertical antenna elements within a panel in one polarization

[0324] - N: The number of horizontal antenna elements within a panel in one polarization

[0325] - P: The number of polarizations

[0326] - M g : The number of panels in a column within a panel group.

[0327] - N g : The number of panels in a row within a panel group.

[0328] - d g,H : The antenna panel spacing in the horizontal direction within a panel group.

[0329] - d g,V : The antenna panel spacing in the vertical direction within a panel group.

[0330] - The enterprise shall report the separation of the two panel groups. Introduce the new parameters (d Figure 14 as shown a,H , d a,V ).

[0331] - d a,H : The panel group spacing in the horizontal direction. Usually, d a,H = 0.

[0332] - d a,V : The panel group spacing in the vertical direction.

[0333] To evaluate and compare SBFD and traditional TDD, three options can be used.

[0334] - SBFD antenna configuration option - 1: The total number of antenna elements of the antenna array for SBFD is the same as that of the antenna array for traditional TDD. The total number of TxRUs of the antenna array for SBFD is the same as that of the antenna array for traditional TDD.

[0335] - SBFD antenna configuration option - 2: The total number of antenna elements of the antenna array for SBFD is twice that of the antenna array for traditional TDD. The total number of TxRUs of the antenna array for SBFD is the same as that of the antenna array for traditional TDD.

[0336] - SBFD antenna configuration option - 3: The total number of antenna elements of the antenna array for SBFD is the same as that of the antenna array for traditional TDD. The total number of TxRUs of the antenna array for SBFD is half of that of the antenna array for traditional TDD.

[0337] These options are further illustrated by the following examples:

[0338] As Figure 15 shown, for traditional TDD using a shared Tx / Rx antenna array, assume the antenna configuration is (M, N, P, M g , N g ; M p , N p ). The total number of TxRUs is K = PM p N p M g N g , and the total number of antenna elements is L = PMNM g N g .

[0339] For the SBFD antenna configuration option - 1, the separate Tx / Rx antenna array has two panel groups, and the antenna configuration for each panel group is (M, N, P, M g / 2, N g ). The total number of TXRUs is K = PM p N p M g N g (same as traditional TDD), and the total number of antenna elements is L = PMNM g N g (same as traditional TDD). One method of using TXRUs and antenna elements in DL / UL / SBFD time slots / symbols is illustrated below. Other methods are not excluded, and other methods can be reported by enterprises.

[0340] - Method 1 (see Figure 16 ):

[0341] - In the DL time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Tx chains in TxRU group #1, and L / 2 antenna elements on panel group #2 are connected to K / 2 Tx chains in TxRU group #2.

[0342] - In the UL time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Rx chains in TxRU group #1, and L / 2 antenna elements on panel group #2 are connected to K / 2 Rx chains in TxRU group #2.

[0343] - In the SBFD time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Tx chains in TxRU group #1, and L / 2 antenna elements on panel group #2 are connected to K / 2 Rx chains in TxRU group #2.

[0344] For the SBFD antenna configuration option - 2, the separate Tx / Rx antenna array has two panel groups, and the antenna configuration for each panel group is (M, N, P, M g , N g ). The total number of TXRUs is K = PM p N p M g N g (same as traditional TDD), and the total number of antenna elements is 2L = 2PMNM g N g (twice the total number of antenna elements for traditional TDD). Two methods of using TXRUs and antenna elements in DL / UL / SBFD time slots / symbols are illustrated below. Other methods are not excluded, and other methods can be reported by enterprises.

[0345] - Method 2-1 (see Figure 17 ):

[0346] - In the DL time slot, L antenna elements on panel group #1 are connected to K Tx chains.

[0347] - In the UL time slot, L antenna elements on panel group #2 are connected to K Rx chains.

[0348] - In the SBFD time slot, L antenna elements on panel group #1 are connected to K Tx chains, and L antenna elements on panel group #2 are connected to K Rx chains.

[0349] - Method 2-2 (see Figure 18 ):

[0350] - In the DL time slot, L antenna elements on panel group #1 are connected to K Tx chains.

[0351] - In the UL time slot, L antenna elements on panel group #1 are connected to K Rx chains.

[0352] - In the SBFD time slot, L antenna elements on panel group #1 are connected to K Tx chains, and L antenna elements on panel group #2 are connected to K Rx chains.

[0353] For the SBFD antenna configuration option -3, the separate Tx / Rx antenna arrays have two panel groups, and the antenna configuration for each panel group is (M, N, P, M g / 2, N g ). The total number of TXRUs is K / 2 = PM p N p M g N g / 2 (half of the total number of TXRUs for traditional TDD), and the total number of antenna elements is L = PMNM g N g (the same as traditional TDD). The following illustrates the method of using TXRUs and antenna elements in DL / UL / SBFD time slots / symbols. Other methods are not excluded, and other methods can be reported by enterprises.

[0354] - Method 3-1 (see Figure 19 ):

[0355] - In the DL time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Tx chains.

[0356] - In the UL time slot, L / 2 antenna elements on panel group #2 are connected to K / 2 Rx chains.

[0357] - In the SBFD time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Tx chains, and L / 2 antenna elements on panel group #2 are connected to K / 2 Rx chains.

[0358] - Method 3-2 (see Figure 20 ):

[0359] - In the DL time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Tx chains in TxRU group #1.

[0360] - In the UL time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Rx chains in TxRU group #1.

[0361] - In the SBFD time slot, L / 2 antenna elements on panel group #1 are connected to K / 2 Tx chains in TxRU group #1, and L / 2 antenna elements on panel group #2 are connected to K / 2 Rx chains in TxRU group #1.

[0362] For SBFD evaluation, it is assumed that the maximum BS transmit power is proportional to the number of Tx chains used for transmission

[0363] - For SBFD antenna configuration option -1,

[0364] - In DL-only symbols, the maximum BS transmit power for SBFD is the same as the maximum BS transmit power for traditional TDD

[0365] - In SBFD symbols, the maximum BS transmit power for SBFD is half of the maximum BS transmit power for traditional TDD

[0366] - For SBFD antenna configuration option -2, in both DL-only symbols and SBFD symbols, the maximum BS transmit power for SBFD is always the same as the maximum BS transmit power for traditional TDD

[0367] - For SBFD antenna configuration option -3, in both DL-only symbols and SBFD symbols, the maximum BS transmit power for SBFD is always half of the maximum BS transmit power for traditional TDD

[0368] For the BS transmit power of SBFD, option -1 is used as the baseline. Option -2 can also be evaluated.

[0369] - Option -1: Compared with DL-only symbols (as in traditional systems), no power boost is assumed for SBFD symbols, i.e., the BS transmit power spectral density per Tx chain remains the same for SBFD symbols and DL-only symbols

[0370] - Option - 2: Assume a power boost for SBFD symbols compared to DL - only symbols, i.e.,

[0371] - DL symbols in SBFD operations have the same PSD as the PSD used in TDD DL symbols

[0372] - For SBFD symbols, its PSD is scaled according to the number of RBs in the DL sub - band, e.g.,

[0373]

[0374] - is the BS transmit power spectral density per Tx chain in SBFD symbols

[0375] - is the BS transmit power spectral density per Tx chain in DL - only symbols

[0376] - BW carrier is the system bandwidth and BW DL subbands is the total bandwidth of the DL sub - band

[0377] Embodiment 3: Method for measuring and reporting UE-to-UE CLI within a cell for full-duplex support

[0378] In the time resources indicated to operate in SBFD, a user can send UL signals in the UL sub - band, and another user can receive DL signals in the DL sub - band. If the base station performs DL and UL simultaneously in the DL sub - band and UL sub - band, the UL signals sent by the user in the UL sub - band can also be received by other users in the DL sub - band.

[0379] If both the DL sub - band and the UL sub - band are included in a DL - only band, such as Figure 12 in BWP1 of

[0380] then the user performing SBFD can receive DL signals in the DL sub - band and can also receive signals in the UL sub - band simultaneously. Figure 12 Or, as in

[0381] in BWP1 and BWP2 of

[0382] a user can send UL signals in the UL sub - band of BWP1, and another user can receive DL signals in the DL frequency region of the DL BWP for BWP2.

[0383] If the base station allows the UE to perform DL reception during the SBFD available duration, then if the UE has been configured with inter-subband UE-to-UE CLI measurement in the time resource, the UE may perform inter-subband UE-to-UE CLI measurement in the UL subband frequency band that exceeds the BW duration of the DL subband of the DL BWP. Specifically, if the UE is instructed to perform SRS-RSRP measurement, the UE receives the SRS signal of another UE at the SRS transmission frequency indicating the measurement, and measures the signal quality. In this instance, the base station may configure a measurement gap or downlink rate matching resource for the UE, so that the UE may not receive DL signals during the SRS signal quality measurement duration, or may allow the UE to select the reception of DL signals or the execution of SRS measurement based on the priority of the type of downlink (DL) received (Rx) signals. The measurement gap may also be expressed as a downlink rate matching resource.

[0384] The base station may provide the UE with information about the ID of a specific user or the SRS resource ID, and may indicate an indicator notifying that the SRS resource belongs to a user existing in the same cell, or may indicate a measurement resource or a set of resources for measuring users existing in the same cell.

[0385] The measured value may be different from the value transmitted between subbands. When reporting the measured value, the base station may indicate correction information to the UE so that a certain value can be corrected. Alternatively, the measured value may be reported to the base station as it is, and the base station may correct the intensity of the value based on the frequency position.

[0386] The above expression "the frequency band exceeding the duration of the DL BWP" can be interpreted as the UL subband of the UL BWP of the DL subband of the DL BWP exceeding BWP1 in Figure 12 or the UL subband of the UL BWP in a different frequency region different from this subband. Alternatively, the above expression "the frequency band exceeding the duration of the DL BWP" may mean the UL subband region of the BWP1 of the DL region of the DL BWP exceeding BWP2 in Figure 12

[0387] If the BW of the DL BWP is wide and the BW includes both the sub-bands of the DL BWP and the sub-bands of the UL BWP, as in BWP1, there may be the ability to receive signals in the UL sub-bands of the UL BWP outside the sub-band region of the DL BWP. Therefore, the UE can receive signals and measure the CLI in the sub-bands of the UL BWP outside the sub-band region of the DL BWP of BWP1. In this case, when measuring the SRS-RSRP, the SRS can be received outside the sub-band region of the DL BWP of BWP1, and the SRS-RSRP can be measured. If the UL signals of interfering users and the DL signals of the base station can be received within a specific time range, the two simultaneously received signals can be distinguished by frequency, and the SRS-RSRP measurement and DL signal processing can be performed. In cases where it is difficult for the UE to perform simultaneous processing, or when the two signals are received outside the specific time range, one of the two actions is performed: processing the DL signal or performing the UL SRS-RSRP measurement.

[0388] When the base station performs the SBFD (or SSFD) operation, co-channel CLI between UEs within the cell may occur. In this case, the SRS-RSRP can perform L1 / L2 or L3 measurement / reporting.

[0389] Proposal 3-2. Inter-sub-band CLI-RSSI measurement

[0390] When performing inter-sub-band CLI measurement, the base station can specify the sub-bands for the UE to measure the CLI-RSSI, and the UE can perform the measurement in this resource. When the DL BWP consists of discontinuous frequencies, the base station can configure the measurement resources for the discontinuous frequencies.

[0391] If N resource indicators are used to indicate the sub-bands belonging to discontinuous resource frequencies respectively, and measurements are performed simultaneously within one DL BWP, the CLI-RSSI measured in each resource can be calculated as one value and reported. In this case, the reported resource ID can specify the ID of a specific resource. However, it can be interpreted that, based on the agreement between the base station and the UE, or the indication of the base station, or the recommendation of the UE, the measurement information reported from a specific resource ID is the same as or represented by the measurement information measured from another resource.

[0392] Different from the above SRS-RSRP measurement, the interference signals received in the DL region using RSSI can be measured and reported.

[0393] The following is part of 3GPP TR38.858 v1.0.0 (September 2023).

[0394] TR38.858 v1.0.0(2023.9)

[0395] 6.2 UE - to - UE CLI Disposal Scheme Specific to SBFD

[0396] For inter - UE inter - subband CLI measurements, at least the following methods are studied:

[0397] - Method #1: The victim UE measures RSSI within the DL subband

[0398] - Method #2: The victim UE measures the RSRP of the attacking UE within the UL subband

[0399] - Method #3: The victim UE measures RSSI within the UL subband

[0400] - Note: When the UL subband is restricted within the DL BWP, the restriction of measuring CLI only within the DL BWP in Release 16 does not prohibit the UE from measuring CLI in the UL subband.

[0401] For UE - to - UE CLI - RSSI measurement / reporting across DL subbands, the following methods are studied. Note that Alternative #1 and Alternative #2 are supported in the existing specifications.

[0402] - Alternative #1: Separate CLI - RSSI measurement resources / reporting in each DL subband

[0403] - Alternative #2: CLI - RSSI measurement / reporting only in one DL subband

[0404] - Alternative #3: CLI - RSSI measurement / reporting based on discontinuous CLI - RSSI resources across DL subbands

[0405] Alternative #1 allows flexible configuration of measurement reporting in one or two DL subbands, but in terms of UE capability budget, it consumes multiple CLI - RSSI measurement resources. Alternative #2 restricts the gNB configuration flexibility and does not consider whether the CLI is asymmetric across two DL subbands. From the perspective of UE capabilities, this method does not consume multiple CLI - RSSI measurement resources. Alternative #3 requires additional specification work to support discontinuous CLI - RSSI resource allocation across DL subbands. This method is similar to discontinuous CSI - RS resource allocation. A single CLI - RSSI report based on discontinuous CLI - RSSI resources may be sufficient. From the perspective of UE capabilities, this method does not consume multiple CLI - RSSI measurement resources. Note that it does not imply support for L1 - based or L2 - based measurements.

[0406] If orthogonal resources are allocated to different attacking UE, Method #2 and Method #3 can be used to identify the attacking UE. Method #2 and Method #3 can provide at least a higher interference signal strength than the measurement results based on inter-subband interference leakage in Method #1. In addition, such measurements are not subject to inter-cell DL interference. If DL is received in the active DL BWP and simultaneously in the DL subband, it is feasible for the UE to measure RSRP / RSSI in the UL subband, similar to the simultaneous RSRP / RSSI measurement and DL reception in Release 16. When the UL subband is restricted within the active DL BWP, the existing CLI measurement and reporting framework can be reused to support RSRP / RSSI measurement in the UL subband.

[0407] [Description of claims related to UE]

[0408] Next, the above-described embodiments will be described in detail from the perspective of the operations of the UE. The methods to be described below are merely distinguished for ease of explanation. Therefore, as long as these methods are not mutually exclusive, it is obvious that part of the configuration of any method can be replaced by or combined with part of the configuration of another method. Figure 21 Examples of operation procedures applicable to the UE in the system of the present disclosure are illustrated.

[0409] Figure 21 In step S2110, the UE receives from the base station (BS) a command to measure the reference signal received power (RSRP) of the sounding reference signal (SRS) of another UE during the duration when subband full duplex (SBFD) is available.

[0410] In step S2120, the UE receives from the base station configuration information about the measurement gap or downlink rate matching resources during the measurement duration of the SRS.

[0411] In step S2130, the UE receives the SRS in the measurement gap or downlink rate matching resources.

[0412] In step S2140, the UE sends a report message of the measurement result of the RSRP for the SRS to the base station.

[0413] According to various embodiments of the present disclosure, the configuration information may include information about the priority for each type of downlink (DL) received (Rx) signal.

[0414] The embodiments may further include: receiving a downlink signal with a higher priority than the SRS based on the priority in the measurement gap or downlink rate matching resources, or receiving the SRS without receiving a downlink signal with a lower priority than the SRS. Figure 21

[0415] ​According to various embodiments of the present disclosure, the configuration information may further include information on the SRS resource identifier (ID) and information on a specific UE ID associated with the SRS resource ID. Figure 21 The embodiment of Figure 21 may further include: performing correction on the measurement result of RSRP based on the association between SRS and a specific UE ID.

[0416] According to various embodiments of the present disclosure, Figure 21 The embodiment of Figure 21 may further include: receiving correction information on RSRP from a base station; and performing correction on the measurement result of RSRP based on the correction information.

[0417] According to various embodiments of the present disclosure, Figure 21 The embodiment of Figure 21 may further include: receiving designated information on a sub-band for measuring the cross-link interference received signal strength indicator (CLI-RSSI); measuring the CLI-RSSI for the sub-band based on the designated information; and sending a report message on the measurement result of the CLI-RSSI to the base station.

[0418] According to various embodiments of the present disclosure, based on multiple non-contiguous frequency bands being designated for measuring CLI-RSSI, the measurement result of CLI-RSSI may be based on the sum of the measurement results of CLI-RSSI for the multiple non-contiguous frequency bands.

[0419] According to various embodiments of the present disclosure, the report message may include a resource ID for one of the multiple non-contiguous frequency bands. The measurement result of CLI-RSSI may represent the result measured in the multiple non-contiguous frequency bands.

[0420] According to various embodiments of the present disclosure, a user equipment (UE) in a wireless communication system is provided. The UE may include a transceiver and at least one processor, and the at least one processor may be configured to perform operations based on Figure 21 the operation method of the UE of Figure 21 .

[0421] According to various embodiments of the present disclosure, a device for controlling a user equipment (UE) in a wireless communication system is provided. The device may include at least one processor and at least one memory operatively connected to the at least one processor. The at least one memory may be configured to store instructions that perform operations based on Figure 21 the operation method of the UE of Figure 21 when executed by the at least one processor.

[0422] According to various embodiments of the present disclosure, one or more non-transitory computer-readable media (CRM) storing one or more instructions are provided. The one or more instructions may be configured to perform operations when executed by one or more processors, and the operations may include based on Figure 21Operation method of UE.

[0423] [Description of claims related to BS]

[0424] Next, with reference to Figure 22 The above embodiments will be described in detail from the perspective of the operation of the base station. The methods to be described below are only distinguished for ease of explanation. Therefore, as long as these methods are not mutually exclusive, it is obvious that part of the configuration of any method can be replaced by or combined with part of the configuration of another method.

[0425] Figure 22 An example of the operation process of a base station applicable to the system of the present disclosure is illustrated.

[0426] In step S2210, the base station sends a command to a user equipment (UE) to measure the reference signal received power (RSRP) of a sounding reference signal (SRS) for another UE within the duration available for sub-band full duplex (SBFD).

[0427] In step S2220, the base station sends configuration information about the measurement gap or downlink rate matching resources during the measurement duration of the SRS to the UE.

[0428] In step S2230, the base station receives a report message from the UE regarding the measurement result of the RSRP for the SRS based on the measurement gap or downlink rate matching resources.

[0429] According to various embodiments of the present disclosure, the configuration information may include information about the priority for each type of downlink (DL) received (Rx) signal. Figure 22 The embodiments may further include: based on the priority in the measurement gap or downlink rate matching resources, the UE receives a downlink signal with a higher priority than the SRS, or the UE receives the SRS instead of a downlink signal with a lower priority than the SRS.

[0430] According to various embodiments of the present disclosure, the configuration information may further include information about the SRS resource identifier (ID) and information about a specific UE ID associated with the SRS resource ID. Figure 22 The embodiments may further include: based on the SRS being associated with a specific UE ID, performing correction on the measurement result of the RSRP.

[0431] According to various embodiments of the present disclosure, Figure 22 The embodiments may further include: sending correction information about the RSRP to the UE; and performing correction on the measurement result of the RSRP based on the correction information.

[0432] According to various embodiments of the present disclosure, Figure 22Embodiments may also include: sending specified information of a sub - band for measuring cross - link interference received signal strength indicator (CLI - RSSI); and receiving, from a UE, a report message of measurement results of CLI - RSSI for the sub - band based on the specified information.

[0433] According to various embodiments of the present disclosure, based on that multiple non - consecutive frequency bands are designated for measuring CLI - RSSI, the measurement result of CLI - RSSI may be based on the sum of the measurement results of CLI - RSSI for the multiple non - consecutive frequency bands.

[0434] According to various embodiments of the present disclosure, the report message may include a resource ID for one of the multiple non - consecutive frequency bands. The measurement result of CLI - RSSI may represent the result measured in the multiple non - consecutive frequency bands.

[0435] According to various embodiments of the present disclosure, a base station in a wireless communication system is provided. The base station may include a transceiver and at least one processor, and the at least one processor may be configured to perform operations of a base station based on Figure 22 the operation method of the base station.

[0436] According to various embodiments of the present disclosure, a device for controlling a base station in a wireless communication system is provided. The device may include at least one processor and at least one memory operatively connected to the at least one processor. The at least one memory may be configured to store instructions that, when executed by the at least one processor, perform the operation method of a base station based on Figure 22 the operation method of the base station.

[0437] According to various embodiments of the present disclosure, one or more non - transitory computer - readable media (CRM) storing one or more instructions are provided. The one or more instructions may be configured to perform operations when executed by one or more processors, and the operations may include the operation method of a base station based on Figure 22 the operation method of the base station.

[0438] Wireless device applicable to the present disclosure

[0439] Examples of wireless devices applying various embodiments of the present disclosure are described below.

[0440] Figure 23 Examples of the structures of a first device and a second device applicable to the system of the present disclosure are illustrated.

[0441] The first device 1600 may include a processor 1610, an antenna unit 1620, a transceiver 1630, and a memory 1640.

[0442] The processor 1610 may perform baseband-related signal processing and includes a high-layer processing unit 1611 and a physical-layer processing unit 1615. The high-layer processing unit 1611 may process operations of the MAC layer, RRC layer, or high layers. The physical-layer processing unit 1615 may process operations of the PHY layer. For example, if the first device 1600 is a base station (BS) device in BS-UE communication, the physical-layer processing unit 1615 may perform uplink (UL) receive (Rx) signal processing, downlink (DL) transmit (Tx) signal processing, etc. For example, if the first device 1600 is the first UE device in UE-to-UE communication, the physical-layer processing unit 1615 may perform downlink Rx signal processing, uplink (UL) Tx signal processing, sidelink Tx signal processing, etc. In addition to performing baseband-related signal processing, the processor 1610 may also control the overall operation of the first device 1600.

[0443] If the antenna unit 1620 includes multiple antennas, the antenna unit 1620 may include one or more physical antennas and support MIMO transmission / reception. The transceiver 1630 may include a radio frequency (RF) transmitter and an RF receiver. The memory 1640 may store information processed by the processor 1610 and software, operating systems, and applications related to the operation of the first device 1600. The memory 1640 may also include components such as buffers.

[0444] The processor 1610 of the first device 1600 may be configured to implement the operations of the BS in BS-UE communication (or the operations of the first UE device in UE-to-UE communication) in the embodiments described in the present disclosure.

[0445] The second device 1650 may include a processor 1660, an antenna unit 1670, a transceiver 1680, and a memory 1690.

[0446] The processor 1660 may perform baseband-related signal processing and includes a high-layer processing unit 1661 and a physical-layer processing unit 1665. The high-layer processing unit 1661 may process operations of the MAC layer, RRC layer, or high layers. The physical-layer processing unit 1665 may process operations of the PHY layer. For example, if the second device 1650 is a UE device in BS-UE communication, the physical-layer processing unit 1665 may perform downlink Rx signal processing, uplink (UL) transmit (Tx) signal processing, etc. For example, if the second device 1650 is the second UE device in UE-to-UE communication, the physical-layer processing unit 1665 may perform downlink Rx signal processing, uplink Tx signal processing, sidelink Rx signal processing, etc. In addition to performing baseband-related signal processing, the processor 1660 may also control the overall operation of the second device 1660.

[0447] If the antenna unit 1670 includes multiple antennas, the antenna unit 1670 may include one or more physical antennas and support MIMO transmission / reception. The transceiver 1680 may include an RF transmitter and an RF receiver. The memory 1690 may store information processed by the processor 1660 and software, an operating system, and applications related to the operation of the second device 1650. The memory 1690 may also include components such as buffers.

[0448] The processor 1660 of the second device 1650 may be configured to implement the operation of the UE in BS-UE communication (or the operation of the second UE device in UE-to-UE communication) in the embodiments described in the present disclosure.

[0449] The descriptions of the BS and the UE in BS-UE communication (or the first UE device and the second UE device in UE-to-UE communication) in the examples of the present disclosure may be equivalently applied to the operations of the first device 1600 and the second device 1650, and redundant descriptions are omitted.

[0450] The wireless communication technologies implemented in the devices 1600 and 1650 according to the present disclosure may include LTE, NR, and 6G, as well as various other wireless communication technologies.

[0451] The claims described in the various embodiments of the present disclosure may be combined in various ways. For example, the technical features of the method claims of the various embodiments of the present disclosure may be combined and implemented as a device, and the technical features of the device claims of the various embodiments of the present disclosure may be combined and implemented as a method. Additionally, the technical features of the method claims and the technical features of the device claims in the various embodiments of the present disclosure may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims in the various embodiments of the present disclosure may be combined and implemented as a method.

Claims

1. A method for operating a user equipment (UE) in a wireless communication system, the method comprising the steps of: Receiving, from a base station (BS), a command to measure a reference signal received power (RSRP) of a sounding reference signal (SRS) of another UE during a duration available for sub-band full duplex (SBFD); Receiving, from the base station, configuration information on a measurement gap or a downlink rate matching resource during the measurement duration of the SRS; Receiving the SRS in the measurement gap or the downlink rate matching resource; And Sending, to the base station, a report message of a measurement result of the RSRP for the SRS.

2. The method according to claim 1, wherein The configuration information further includes information on a priority of each type of downlink received Rx signal, and wherein the method further comprises the steps of: receiving a downlink signal having a higher priority than the SRS, or receiving the SRS without receiving a downlink signal having a lower priority than the SRS, based on the priority in the measurement gap or the downlink rate matching resource.

3. The method according to claim 1, wherein, The configuration information further includes information on an SRS resource identifier (ID) and information on a specific UE ID associated with the SRS resource ID, and wherein the method further comprises the steps of: performing correction on the measurement result of the RSRP based on the SRS being associated with the specific UE ID.

4. The method according to claim 1, the method further comprising the steps of: Receiving, from the base station, correction information on the RSRP; and Performing correction on the measurement result of the RSRP based on the correction information.

5. The method according to claim 1, the method further comprising the steps of: Receiving designation information on a sub-band for measuring a cross-link interference received signal strength indicator (CLI-RSSI); Measuring the CLI-RSSI for the sub-band based on the designation information; and Sending, to the base station, a report message of a measurement result of the CLI-RSSI.

6. The method according to claim 5, wherein Based on a plurality of non-contiguous frequency bands being designated for measuring the CLI-RSSI, the measurement result of the CLI-RSSI is based on a sum of measurement results of the CLI-RSSI for the plurality of non-contiguous frequency bands.

7. The method according to claim 6, wherein, The report message includes a resource ID for one of the plurality of non-contiguous frequency bands, and wherein the measurement result of the CLI-RSSI represents a result measured in the plurality of non-contiguous frequency bands.

8. A method for operating a base station in a wireless communication system, the method comprising the steps of: Sending, to a user equipment (UE), a command to measure a reference signal received power (RSRP) of a sounding reference signal (SRS) of another UE during a duration available for sub-band full duplex (SBFD); Sending, to the UE, configuration information on a measurement gap or a downlink rate matching resource during the measurement duration of the SRS; And Receiving, from the UE, a report message of a measurement result of the RSRP for the SRS based on the measurement gap or the downlink rate matching resource.

9. The method according to claim 8, wherein, The configuration information further includes information about the priority of each type of downlink received Rx signal, and wherein, the method further includes the steps of: based on the priority in the measurement gap or the downlink rate matching resource, the UE receives a downlink signal with a priority higher than that of the SRS, or the UE receives the SRS instead of a downlink signal with a priority lower than that of the SRS.

10. The method according to claim 8, wherein, The configuration information further includes information about the SRS resource identifier ID and information about a specific UE ID associated with the SRS resource ID, and wherein, the method further includes the steps of: based on the SRS being associated with the specific UE ID, performing correction on the measurement result of the RSRP.

11. The method according to claim 8, the method further includes the steps of: sending correction information about the RSRP to the UE; and performing correction on the measurement result of the RSRP based on the correction information.

12. The method according to claim 8, the method further includes the steps of: sending specified information about a sub-band for measuring the cross-link interference received signal strength indicator CLI-RSSI; and receiving, from the UE, a report message of the measurement result of the CLI-RSSI for the sub-band based on the specified information.

13. The method according to claim 12, wherein, Based on a plurality of non-continuous frequency bands being specified for measuring the CLI-RSSI, the measurement result of the CLI-RSSI is based on the sum of the measurement results of the CLI-RSSI for the plurality of non-continuous frequency bands.

14. The method according to claim 13, wherein, The report message includes a resource ID for one of the plurality of non-continuous frequency bands, and wherein, the measurement result of the CLI-RSSI represents the result measured in the plurality of non-continuous frequency bands.

15. A user equipment UE in a wireless communication system, the UE includes: a transceiver; at least one processor; and at least one memory, the at least one memory being operatively connectable to the at least one processor and configured to store instructions, the instructions performing operations based on being executed by the at least one processor, wherein, the operations include all steps of the method according to any one of claims 1 to 7.

16. A base station in a wireless communication system, the base station includes: a transceiver; at least one processor; and at least one memory, the at least one memory being operatively connectable to the at least one processor and configured to store instructions, the instructions performing operations based on being executed by the at least one processor, wherein, the operations include all steps of the method according to any one of claims 8 to 14.

17. A control device for controlling a user equipment in a wireless communication system, the control device includes: at least one processor; and at least one memory, the at least one memory being operatively connected to the at least one processor, wherein the at least one memory is configured to store instructions that perform operations based on being executed by the at least one processor, and wherein the operations include all steps of the method according to any one of claims 1 to 7.

18. A control device for controlling a base station in a wireless communication system, the control device comprising: at least one processor; and at least one memory operatively connected to the at least one processor, wherein the at least one memory is configured to store instructions that perform operations based on being executed by the at least one processor, and wherein the operations include all steps of the method according to any one of claims 8 to 14.

19. One or more non-transitory computer-readable media storing one or more instructions, Among them, the one or more instructions being configured to perform operations based on being executed by one or more processors, and wherein the operations include all steps of the method according to any one of claims 1 to 7.

20. One or more non-transitory computer-readable media storing one or more instructions, Among them, the one or more instructions being configured to perform operations based on being executed by one or more processors, and wherein the operations include all steps of the method according to any one of claims 8 to 14.

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