Operation method of terminal in wireless communication system and terminal

Abstract

Provided are an operation method of a terminal in a wireless communication system, which performs random access in sub-band full duplex communication (Sub-Band Full Duplex, SBFD) of the wireless communication system, and a terminal. In the present invention, a terminal receives, from a base station, first random access channel (RACH) resource information on an SBFD symbol and second RACH resource information on a non-SBFD symbol. And, the terminal obtains i) first mapping information on the number of synchronization signal blocks (SSB) mapped for each RACH occasion based on the SBFD symbol, and ii) second mapping information on the number of preambles allocated to each SSB for the RACH occasion based on the SBFD symbol.

Description

Technical Field

[0001] This specification relates to wireless communications applicable to 5G NR, 5G-Advanced, and 6G. Background Technology

[0002] With the development of technology, more and more communication devices require larger communication bandwidth, demanding improved wireless broadband communication compared to the existing LTE system, namely the next-generation 5G system. In this next-generation 5G system, known as NewRAT, communication scenarios are categorized into Enhanced Mobile Broadband (eMBB), Ultra-reliability and low-latency communication (URLLC), and Massive Machine-Type Communications (mMTC).

[0003] Among them, eMBB is a next-generation mobile communication scenario with characteristics such as high spectrum efficiency, high user experience data rate, and high peak data rate; URLLC is a next-generation mobile communication scenario with characteristics such as ultra-reliability, ultra-low latency, and ultra-high availability (e.g., V2X, emergency services, remote control); and mMTC is a next-generation mobile communication scenario with characteristics such as low cost, low power consumption, short data packets, and massive connectivity (e.g., Internet of Things, IoT). Summary of the Invention

[0004] The purpose of this specification is to provide an operation method and terminal for a wireless communication system that can effectively perform random access in sub-band full-duplex communication.

[0005] One embodiment of this specification provides a method in which a terminal in a wireless communication system receives first Random Access Channel (RACH) resource information regarding sub-band full-duplex (SBFD) symbols and second RACH resource information regarding non-SBFD symbols. Furthermore, the terminal obtains i) first mapping information regarding the number of synchronization signal blocks (SSBs) mapped for each RACH occasion based on the SBFD symbols, and ii) second mapping information regarding the number of preambles allocated to each SSB for each RACH occasion based on the SBFD symbols.

[0006] Furthermore, one embodiment of this specification provides a terminal in a wireless communication system, comprising: at least one processor; and at least one memory storing instructions and operably electrically connected to the at least one processor, and performing operations based on the instructions by the at least one processor. The performed operations include: receiving from a base station first random access channel (RACH) resource information regarding sub-band full-duplex (SBFD) symbols and second RACH resource information regarding non-SBFD symbols. Furthermore, obtaining i) first mapping information regarding the number of synchronization signal blocks (SSBs) mapped for each RACH occasion based on SBFD symbols, and ii) second mapping information regarding the number of preambles allocated to each SSB for each RACH occasion based on SBFD symbols.

[0007] The first mapping information and the second mapping information can be obtained based on the second random access channel resource information.

[0008] The terminal can determine the RACH timing for a specific SSB based on the obtained first and second mapping information. Furthermore, the terminal transmits a preamble to the base station using the determined RACH timing.

[0009] The settings of the first RACH resource information are based on the settings of the second RACH resource information. Alternatively, the settings of the first RACH resource information may be independent of the settings of the second RACH resource information.

[0010] The first RACH resource information can be configured to exclude both the first mapping information and the second mapping information. Alternatively, the second RACH resource information can be configured to include both the first mapping information and the second mapping information.

[0011] On the one hand, the RACH timing based on the SBFD symbol and the SSB based on the non-SBFD symbol can be mapped separately.

[0012] According to the disclosure in this specification, in the case of an SBFD identification terminal that can selectively use the RACH Occasion (RO) of the legacy non-SBFD symbols and the RO of the SBFD symbols, the possibility of selecting different preamble indices can be eliminated based on the symbol type. Therefore, compared with a terminal that performs the random access procedure only through the non-SBFD UL (uplink) of TDD, it can perform physical random access channel (PRACH) transmission at an earlier time point, which has the effect of reducing random access (RA) delay. Attached Figure Description

[0013] Figure 1 A diagram illustrating a wireless communication system.

[0014] Figure 2 This shows the structure of the radio frame used by NR.

[0015] Figures 3A to 3C An example diagram illustrating an exemplary architecture for wireless communication services.

[0016] Figure 4 The time slot structure of an NR frame is shown.

[0017] Figure 5 An example of subframe types in NR is shown.

[0018] Figure 6 The structure of the self-contained time slot is shown.

[0019] Figures 7A to 7B This illustrates a general example of subband full-duplex communication.

[0020] Figures 8A to 8B An example of setting up an uplink (UL) subband in a downlink (DL) timeslot according to an embodiment of this specification is shown.

[0021] Figure 9 This is a flowchart illustrating a terminal operation method according to an embodiment of this specification.

[0022] Figures 10A to 10B This is an example illustrating a synchronization signal timing (RACH) mapping method according to an embodiment of this specification.

[0023] Figure 11 This is a flowchart illustrating a terminal operation method according to another embodiment of this specification.

[0024] Figure 12 An apparatus according to one embodiment of this specification is shown.

[0025] Figure 13 A block diagram illustrating the configuration of a terminal according to an embodiment of this specification.

[0026] Figure 14 A block diagram illustrating the configuration of the processor disclosed in this specification is shown.

[0027] Figure 15 To show in detail Figure 12 The receiver or transmitter of the first device shown Figure 13 A block diagram of the receiving and transmitting section of the device shown. Detailed Implementation

[0028] It should be noted that the technical terms used in this specification are only used to describe specific embodiments and are not intended to limit the content of this specification. Furthermore, unless otherwise defined in this invention, the technical terms used in this specification should be interpreted as meaning commonly understood by one of ordinary skill in the art to which this specification pertains, and should not be interpreted as having an overly broad or overly narrow meaning. Additionally, when the technical terms used in this specification are inappropriate and fail to accurately express the content and ideas of this specification, they should be replaced with technical terms that a person of skill in the art can correctly understand. Furthermore, the general terms used in this specification should be interpreted according to their predefined content or context, and should not be interpreted as having an overly narrow meaning.

[0029] Furthermore, unless the context explicitly states otherwise, the singular expressions used in this specification include the plural expressions. In this application, terms such as “constituting” or “having” should not be construed as necessarily including all of the multiple constituent elements or steps described in the specification, but should be interpreted as not necessarily excluding some of the constituent elements or steps, or possibly including additional constituent elements or steps.

[0030] Furthermore, the terms including ordinal numbers such as 1, 2, etc., used in this specification may be used to describe various constituent elements, but the constituent elements shall not be limited by the terms. The terms are used only for the purpose of distinguishing one constituent element from another. For example, without departing from the scope of the claims, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element.

[0031] When it is mentioned that a constituent element is "connected" or "continued" to another constituent element, it can mean that the element is directly connected or continues to the other constituent element, or that there are other constituent elements in between. Conversely, when it is mentioned that a constituent element is "directly connected" or "directly continued" to another constituent element, it should be understood that there are no other constituent elements in between.

[0032] The embodiments are described in detail below with reference to the accompanying drawings. Identical or similar components are assigned the same reference numerals, and repeated descriptions thereof are omitted, regardless of the drawing numbers. Furthermore, in describing the invention, detailed descriptions of relevant prior art are omitted when it is determined that such descriptions may obscure the gist of this specification. It should also be noted that the drawings are only used to facilitate a clearer understanding of the content and ideas of this specification and should not be construed as limiting the content and ideas of this specification. The content and ideas of this specification should be interpreted as extending beyond the drawings to all modifications, equivalents, and substitutions.

[0033] In this specification, "A or B" can mean "A only", "B only", or "both A and B". In other words, in this specification, "A or B" can be interpreted as "A and / or B". For example, in this specification, "A, B, or C" can mean "A only", "B only", "C only", or "any combination of A, B, and C".

[0034] The forward slash ( / ) or comma used in this specification can mean "and / or". For example, "A / B" can mean "A and / or B". Therefore, "A / B" can mean "A only", "B only", or "both A and B". For example, "A, B, C" can mean "A, B or C".

[0035] In this specification, "at least one of A and B" may mean "only A", "only B" or "both A and B". Additionally, in this specification, the expressions "at least one of A or B" or "at least one of A and / or B" may be interpreted in the same way as "at least one of A and B".

[0036] Additionally, in this specification, "at least one of A, B and C" can mean "A only", "B only", "C only", or "any combination of A, B and C". Furthermore, "at least one of A, B or C" or "at least one of A, B and / or C" can mean "at least one of A, B and C".

[0037] Furthermore, the parentheses used in this specification may mean "for example." Specifically, when identified as "Control Information (PDCCH)," "PDCCH (physical downlink control channel)" may be mentioned as an example of "control information." In other words, "control information" in this specification is not limited by "PDCCH," and "PDCCH" may be mentioned as an example of "control information." Additionally, when identified as "control information (i.e., PDCCH)," "PDCCH" may be mentioned as an example of "control information."

[0038] In this specification, the technical features described individually in a single drawing can be implemented either independently or simultaneously.

[0039] The accompanying drawings exemplarily illustrate a UE (User Equipment), but the UE shown may also be replaced by terms such as Terminal or Mobile Equipment. Furthermore, the UE can be a portable device such as a laptop, mobile phone, PDA (Personal Digital Assistant), smartphone, or multimedia device, or a non-portable device such as a PC or in-vehicle device.

[0040] Below is an example of a UE acting as a wireless communication device (e.g., a wireless communication device, a wireless apparatus, or a wireless equipment). The operations performed by the UE can be performed by any wireless communication device. It can also be referred to as a wireless communication device, a wireless communication apparatus, a wireless apparatus, or a wireless equipment, etc.

[0041] The term "base station" as used below generally refers to a fixed location for communication with wireless devices. It can also be used as a broad term including eNodeB (evolved-NodeB), eNB (evolved-NodeB), BTS (Base Transceiver System), Access Point, gNB (Next generation NodeB), RRH (remote radiohead), TP (transmission point), RP (reception point), relay, etc.

[0042] This specification uses LTE systems, LTE-A systems, and NR systems to describe embodiments, but these embodiments can also be applied to any communication system to which the definitions are applied.

[0043] Wireless Communication Systems

[0044] Benefiting from the success of LTE (long term evolution) / LTE-Advanced (LTE-A) for fourth-generation mobile communication, fifth-generation (so-called 5G) mobile communication, as the next generation, has been commercialized and is undergoing further research.

[0045] The International Telecommunication Union (ITU) defines fifth-generation mobile communication as providing a maximum data transmission speed of 20Gbps and a minimum sensor speed of 100Mbps or more at any location. Its official name is "IMT-2020".

[0046] The ITU proposes three major use cases: eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), and URLLC (Ultra Reliable and Low Latency Communications).

[0047] URLLC addresses application scenarios requiring high reliability and low latency. Examples include autonomous driving, factory automation, and augmented reality services, all of which demand high reliability and low latency (e.g., less than 1ms). Currently, 4G (LTE) latency is statistically between 21-43ms (best 10%) and 33-75ms (median). This is insufficient to support services requiring less than 1ms latency. Then, eMBB application scenarios involve those requiring mobile ultra-wideband.

[0048] In other words, the fifth-generation mobile communication system supports higher capacity than the current 4G LTE, increasing the density of mobile broadband users and supporting D2D (Device to Device), high stability, and MTC (Machine-type communication). To better realize the Internet of Things (IoT), 5G development also aims for lower standby time and lower power consumption than 4G mobile communication systems. For this 5G mobile communication, new radio access technologies (New RAT or NR) can be proposed.

[0049] NR frequency bands can be defined as frequency ranges of two types (FR1 and FR2). The numerical values ​​of the frequency ranges can vary; for example, the frequency ranges of the two types (FR1 and FR2) can be shown in Table 1 below. For ease of description, FR1 in the frequency ranges used in NR systems can refer to "sub-6GHz range," and FR2 can refer to "above 6GHz range," and can be referred to as millimeter wave (mmW).

[0050] [Table 1]

[0051]

[0052] The frequency range of an NR system can be varied. For example, FR1, as shown in Table 1, can include a frequency band from 410 MHz to 7125 MHz. That is, FR1 can include frequency bands above 6 GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency bands above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included in FR1 can include unlicensed bands. Unlicensed bands can be used for various purposes, such as vehicle communications (e.g., autonomous driving).

[0053] On the other hand, 3GPP-based communication standards define downlink physical channels corresponding to resource elements that carry information from the upper layer, and downlink physical signals corresponding to resource elements used by the physical layer but not carrying information from the upper layer. For example, the physical downlink shared channel (PDSCH), physical broadcast channel (PBCH), physical multicast channel (PMCH), physical control format indicator channel (PCFICH), physical downlink control channel (PDCCH), and physical hybrid ARQ indicator channel (PHICH) are defined as downlink physical channels, while reference signals and synchronization signals are defined as downlink physical signals. A reference signal (RS), also known as a pilot, refers to a predefined signal with a specific waveform known to both the gNB and the UE. Examples include cell-specific RS, UE-specific RS (UE-RS), positioning RS (PRS), and channel state information RS (CSI-RS), which are defined as downlink reference signals. The 3GPP LTE / LTE-A standard defines uplink physical channels corresponding to resource elements carrying information from the upper layer, and uplink physical signals corresponding to resource elements used by the physical layer but not carrying information from the upper layer. For example, the physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), and physical random access channel (PRACH) are defined as uplink physical channels. The standard also defines demodulation reference signals (DMRS) for uplink control / data signals and sounding reference signals (SRS) for uplink channel measurements.

[0054] In this specification, PDCCH (Physical Downlink Control CHannel), PCFICH (Physical Control Format Indicator CHannel), PHICH (Physical Hybrid Automatic Retransmit Request Indicator CHannel), and PDSCH (Physical Downlink Shared CHannel) refer to the sets of time-frequency resources or resource elements carrying DCI (downlink control information), CFI (Control Format Indicator), downlink ACK, NACK (ACK nowlegement), and negative ACK, respectively, for downlink data. Similarly, PUCCH (Physical Uplink Control CHannel), PUSCH (Physical Uplink Shared CHannel), and PRACH (Physical Random Access CHannel) refer to the sets of time-frequency resources or resource elements carrying UCI (Uplink Control Information), uplink data, and random access signals, respectively.

[0055] Figure 1 A diagram illustrating a wireless communication system.

[0056] Reference Figure 1 It is known that the wireless communication system includes at least one base station (BS). The BS is divided into gNodeB (or gNB) 20-a and eNodeB (or eNB) 20-b. The gNB 20-a supports fifth-generation mobile communication. The eNB 20-b supports fourth-generation mobile communication, namely LTE (long-term evolution).

[0057] Each base station 20-a and 20-b provides communication services to specific geographical areas (usually called cells) 20-1, 20-2, and 20-3. A cell can be further divided into multiple areas (called sectors).

[0058] A UE (User Equipment) typically belongs to a cell, which is called the serving cell. The base station that provides communication services to the serving cell is called the serving base station (BS). Wireless communication systems are cellular systems, therefore there are other cells adjacent to the serving cell. These other cells are called neighboring cells. The base station that provides communication services to the neighboring cells is called the neighboring base station (BS). The serving cell and neighboring cells are determined relative to the UE.

[0059] Below, downlink refers to communication between base stations 20-a and 20-b and UE 10, and uplink refers to communication between UE 10 and base stations 20-a and 20-b. In the downlink, the transmitter can be part of base stations 20-a and 20-b, and the receiver can be part of UE 10. In the uplink, the transmitter can be part of UE 10, and the receiver can be part of base stations 20-a and 20-b.

[0060] On the other hand, wireless communication systems can be broadly categorized into FDD (frequency division duplex) and TDD (time division duplex) methods. In FDD, uplink and downlink transmissions occupy different frequency bands. In TDD, uplink and downlink transmissions occupy the same frequency band but occur at different times. The channel response in TDD is essentially reciprocal. Within a given frequency region, the downlink and uplink channel responses are almost identical. Therefore, in TDD-based wireless communication systems, the downlink channel response has the advantage of being derived from the uplink channel response. In TDD, uplink and downlink transmissions are time-divided across the entire frequency band, thus the base station's downlink transmission and the UE's uplink transmission cannot occur simultaneously. In TDD systems where uplink and downlink transmissions are divided into subframe units, they are executed in different subframes.

[0061] Figure 2 This shows the structure of the radio frame used by NR.

[0062] In NR, uplink and downlink transmissions are composed of frames. A radio frame is 10 milliseconds (ms) long and is defined as two 5ms half-frames (HF). A half-frame is defined as five 1ms subframes (SF). A subframe is divided into more than one time slot, the number of time slots within a subframe depending on the subcarrier spacing (SCS). Each time slot includes 12 or 14 OFDM(A) symbols depending on the cyclic prefix (CP). With a standard CP, each time slot includes 14 symbols. With an extended CP, each time slot includes 12 symbols. These symbols can include OFDM symbols (or CP-OFDM symbols) and SC-FDMA symbols (or DFT-s-OFDM symbols).

[0063] Supports diverse parameter sets (numerology)

[0064] In NR systems, with the development of wireless communication technology, multiple parameter sets (numerologies) can also be provided to terminals. For example, when the SCS is 15kHz, it supports a wide area in the traditional cellular band; when the SCS is 30kHz / 60kHz, it supports dense-urban areas, lower latency, and wider carrier bandwidth; and when the SCS is 60kHz or higher, it supports a bandwidth greater than 24.25GHz to overcome phase noise.

[0065] The parameter set can be defined based on the CP (cycle prefix) length and the subcarrier spacing (SCS). A cell can provide multiple parameter sets to the terminal. When μ represents the parameter set index, the CP length corresponding to each subcarrier spacing can be shown in the table below.

[0066] [Table 2]

[0067] μ <![CDATA[Δf=2 μ ·15[kHz]]]> CP 0 15 ordinary 1 30 ordinary 2 60 Normal, Extended 3 120 ordinary 4 240 ordinary 5 480 ordinary 6 960 ordinary

[0068] For a standard CP, when μ represents the index of the parameter set, the number of OFDM symbols per slot (N) slot symb ), Number of time slots per frame (N) frame,μ slot ) and the number of time slots in each subframe (N) subframe,μ slot As shown in the table below.

[0069] [Table 3]

[0070]

[0071]

[0072] For extended CP, when μ represents the index of the parameter set, the number of OFDM symbols per slot (N) slot symb ), Number of time slots per frame (Nf) rame,μ slot ) and the number of time slots in each subframe (N) subframe,μ slot As shown in the table below.

[0073] [Table 4]

[0074] μ <![CDATA[SCS(15*2 u )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot ]]> 2 60kHz (u=2) 12 40 4

[0075] In NR systems, OFDM(A) parameter sets (e.g., SCS, CP length, etc.) can be set differently between multiple cells merged into a single terminal. Therefore, the absolute time intervals of time resources (e.g., SF, time slots, or TTI) consisting of the same number of symbols (collectively referred to as TU (Time Unit) for convenience) can be set differently between the merged cells.

[0076] Figures 3A to 3C This is an example diagram illustrating an exemplary architecture for wireless communication services.

[0077] Reference Figure 3A The UE connects to LTE / LTE-A based cells and NR based cells via DC (dual connectivity).

[0078] The NR-based cell is connected to the core network used for the original fourth-generation mobile communication, namely EPC (Evolved Packet Core).

[0079] Reference Figure 3B Unlike Figure 3A Cells based on LTE / LTE-A are connected to the core network used for fifth-generation mobile communication, namely the 5G core network.

[0080] Based on Figure 3A and Figure 3B The service model shown is called NSA (non-standalone).

[0081] Reference Figure 3C The UE only connects to NR-based cells. This service method based on this architecture is called SA (standalone).

[0082] On the other hand, in the aforementioned NR, it is possible to consider using downlink subframes for receiving data from the base station and using uplink subframes for transmitting data to the base station. This approach can be applied to both paired and unpaired spectrum. A pair of spectrums means that two carrier spectrums are included for downlink and uplink operation. For example, in a pair of spectrums, a carrier may include a pair of downlink and uplink frequency bands.

[0083] Figure 4 The time slot structure of an NR frame is shown.

[0084] A time slot comprises multiple symbols in the time domain. For example, a time slot contains 14 symbols for a normal CP, while a time slot contains 12 symbols for an extended CP. A carrier comprises multiple subcarriers in the frequency domain. An RB (Resource Block) is defined in the frequency domain as multiple (e.g., 12) consecutive subcarriers. A BWP (Bandwidth Part) is defined in the frequency domain as multiple consecutive (physical, P) RBs, which can correspond to a set of parameters (e.g., SCS, CP length, etc.). A terminal can construct up to N (e.g., 4) BWPs in both the downlink and uplink. Downlink or uplink transmissions can be performed through active BWPs; at a given time, only one BWP established for the terminal can be active. In the resource grid, each element is called a resource element (RE), which can be mapped to a complex number of symbols.

[0085] Figure 5 An example of subframe types in NR is shown.

[0086] Figure 5 The TTI (transmission time interval) shown can be referred to as a subframe or time slot for NR (or new RAT). Figure 5 Subframes (or time slots) can be used in NR (or new RAT) TDD systems to minimize data transmission latency. For example... Figure 5As shown, a subframe (or time slot) comprises 14 symbols. The first few symbols of a subframe (or time slot) can be used for the downlink (DL) control channel, and the last few symbols can be used for the uplink (UL) control channel. The remaining symbols can be used for either DL or UL data transmission. Based on this subframe (or time slot) structure, downlink and uplink transmissions can proceed sequentially within a single subframe (or time slot). Therefore, downlink data can be received within a subframe (or time slot), and uplink acknowledgment responses (ACK / NACK) can also be transmitted within the same subframe (or time slot).

[0087] This type of subframe (or time slot) structure can be called a self-contained subframe (or time slot).

[0088] Specifically, the first N symbols within a time slot can be used to transmit the DL control channel (hereinafter referred to as the DL control area), and the last M symbols within a time slot can be used to transmit the UL control channel (hereinafter referred to as the UL control area). N and M are integers greater than or equal to 0. The resource area (hereinafter referred to as the data area) between the DL control area and the UL control area can be used for either DL data transmission or UL data transmission. For example, in the DL control area, the physical downlink control channel (PDCCH) can be transmitted, and in the DL data area, the physical downlink shared channel (PDSCH) can be transmitted. In the UL control area, the physical uplink control channel (PUCCH) can be transmitted, and in the UL data area, the physical uplink shared channel (PUSCH) can be transmitted.

[0089] Using this subframe (or time slot) structure offers the advantage of reducing the time required to retransmit data that has received errors, thereby minimizing the final data transmission standby time. In this self-contained subframe (or time slot) structure, a time gap is required during the transition from transmit mode to receive mode or vice versa. Therefore, in the subframe structure, a portion of the OFDM symbols during the transition from DL to UL can be set as a guard period (GP).

[0090] Figure 6 The structure of the self-contained time slot is shown.

[0091] In NR systems, a frame is characterized by a self-contained structure that can include the DL control channel, DL or UL data, and UL control channel within a single 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). N and M are integers greater than or equal to 0. The resource region (hereinafter referred to as the data region) between the DL control region and the UL control region can be used for either DL data transmission or UL data transmission. As an example, consider the following configuration: The intervals are listed in chronological order.

[0092] 1. DL only configuration

[0093] 2. UL only configuration

[0094] 3. Mixed UL-DL configuration

[0095] -DL area + GP (Guard Period) + UL control area

[0096] -DL control area + GP + UL area

[0097] DL regions: (i) DL data region, (ii) DL control region + DL data region

[0098] UL Areas: (i) UL Data Area, (ii) UL Data Area + UL Control Area

[0099] PDCCH can be transmitted in the DL control area, and PDSCH can be transmitted in the DL data area. PUCCH can be transmitted in the UL control area, and PUSCH can be transmitted in the UL data area. DCI (Downlink Control Information) can be transmitted in the PDCCH, such as DL data scheduling information and UL data scheduling information. UCI (Uplink Control Information) can be transmitted in the PUCCH, such as ACK / NACK (Positive Acknowledgement / Negative Acknowledgement) information for DL ​​data, CSI (Channel State Information) information, and SR (Scheduling Request) information. GP can provide a time difference during the transition from transmit mode to receive mode or from receive mode to transmit mode between the base station and the terminal. Within a subframe, a portion of the symbols at the time point of transition from DL to UL can be set as GP.

[0100] Time Division Duplex (TDD) communication is a duplexing method widely used in commercial New Radio (NR), i.e., 5G mobile communication systems. In TDD, time-segment radio resources are divided into downlink and uplink time slots, typically with downlink time slots allocated in a larger proportion than uplink time slots, based on the ratio of uplink to downlink traffic. However, this limitation on uplink time slots negatively impacts coverage and latency. Full-duplex communication has recently gained attention as a technology to address this issue.

[0101] Full-duplex communication, as a technology that utilizes the same time and frequency resources to simultaneously perform transmission and reception, is typically considered at the base station (gNB in ​​5G) level, employing a method that simultaneously performs DL reception and UL transmission. However, it is not limited to this; DL reception and UL transmission can also be performed simultaneously at the terminal level. In other words, both the base station and the terminal can support full-duplex communication. However, unlike base stations, which are structurally designed to facilitate self-interference cancellation, the DL reception performance of the terminal is susceptible to self-interference from the UL transmission signal. Therefore, it is generally considered that full-duplex communication is used at the gNB level, while half-duplex communication is used at the terminal level. Furthermore, to reduce the impact of self-interference, DL transmission and UL reception are also performed simultaneously at the gNB level, and a subband non-overlapping full-duplex communication mode can be considered in one go to differentiate the frequency resources between DL and UL for transmission and reception.

[0102] Figures 7A to 7B This illustrates a general example of subband full-duplex communication.

[0103] Subband full-duplex communication can be referred to as subband full-duplex (SBFD) or full-duplex subband (FDSB).

[0104] In subband full-duplex communication, a portion of the time-frequency resources on a given carrier is used for the downlink, while a portion of the time-frequency resources on the same carrier is used for the uplink. Specifically, downlink and uplink resources are distinguished in the frequency domain and used for transmission and reception.

[0105] Figures 7A to 7B An example of SBFD is shown, but in the frequency domain. Figure 7A An example is shown where the uplink sub-band lies between the downlink sub-bands. Figure 7B An example is shown where a downlink sub-band lies between uplink sub-bands. Although not shown in the figures, a guard band or guard period may be located between downlink and uplink sub-bands to reduce interference.

[0106] Figure 8A and Figure 8B An example is shown of setting an uplink (UL) subband in a downlink (DL) time slot according to an embodiment of this specification.

[0107] Reference Figure 8A and Figure 8B In any NR band, when DL and UL time slots form a TDD configuration at a 4:1 ratio (only some symbols of the last DL time slot include flexible special time slots for DL / UL transitions), some (or all) of the DL time slots in the corresponding DL can be configured to provide a UL sub-band to support UL transmission of the terminal. When setting up a UL sub-band in any DL time slot, as... Figure 8A and Figure 8B As shown, the corresponding UL sub-band can be set at the center or edge of the corresponding frequency band, and a guard band can be set between the UL sub-band and the DL sub-band in the corresponding time slot.

[0108] Meanwhile, the remaining frequency resources, excluding the UL sub-band and guard band, can be used as DL sub-bands for DL ​​transmission and reception, based on existing time slot / symbol configuration information. For example... Figure 8AAs shown, when setting up UL subbands with the center of the frequency band as the center, one guard band is formed at the top and one at the bottom, with the corresponding UL subband as the center, for a total of two guard bands. Then, one DL subband is formed at the top and one at the bottom, for a total of two DL subbands. Or, as... Figure 8B As shown, when a UL sub-band is set at the edge of a frequency band, a guard band and a DL sub-band can be set after the corresponding UL sub-band.

[0109] The UL-DL slot settings defined in the existing NR are formed on a cell-by-cell basis through cell-specific RRC signaling. In other words, the DL symbols, UL symbols, and flexible symbols are set using the "tdd-UL-DL-ConfigurationCommon" RRC message / information used for the corresponding DL-UL slot configuration. Additionally, the "tdd-UL-DL-ConfigurationDedicated" RRC message, used as a UE-specific signaling, reassigns UL symbols, DL symbols, or flexible symbols per terminal only for the flexible symbols set through the "tdd-UL-DL-ConfigurationCommon". Alternatively, a method for indicating dynamic slot formats via UE-group common PDCCH is also defined. For this purpose, the NR also supports a slot format indication method using the dynamic form of DCI format2_0.

[0110] Based on the existing slot configuration method described above, any symbol can be set or indicated by DL, UL, or flexible. For example, as Figure 8AAs shown, any slot format can be set to DDDSU through existing slot configuration. D indicates that all OFDM symbols constituting the corresponding slot, made up of downlink slots, are set to DL. U indicates that all OFDM symbols constituting the corresponding slot, made up of uplink slots, are set to UL. S indicates a slot consisting of a special slot including flexible symbols for DL / UL transition. Typically, in normal CP, the corresponding special slot can consist of 12 DL symbols and 2 flexible symbols out of a total of 14 symbols. Alternatively, it can consist of 10 DL symbols, 2 flexible symbols, and 2 UL symbols. That is, within any TDD carrier, a symbol is set or indicated by only one of DL, UL, or flexible.

[0111] However, as Figure 8A and Figure 8B As shown, when a UL subband is configured in any DL time slot, DL transmission or UL transmission can occur simultaneously for each frequency resource in the corresponding symbol. Therefore, in this specification, a DL time slot or symbol including a UL subband, or a UL time slot or symbol including a DL subband, is referred to as an SBFD time slot or SBFD symbol.

[0112] Furthermore, in this specification, a time slot consisting solely of SBFD symbols is referred to as an SBFD time slot, and a time slot consisting solely of symbols (i.e., a time slot consisting solely of symbols excluding the UL sub-band, DL sub-band, and guard band) configured according to existing symbols is referred to as a non-SBFD time slot. Alternatively, a time slot including at least one SBFD symbol may also be referred to as an SBFD time slot.

[0113] Meanwhile, idle / inactive UEs in the current NR perform a random access procedure for initial access. Information about this is received through the "RACH-ConfigCommon IE (information element)" in system information block 1 (SIB1). For cells supporting 2-step RACH, this includes the "RACH-ConfigCommonTwoStepRA IE," allowing the UE to perform initial access via the 2-step RA procedure. The corresponding IE can be found in standard specification TS 38.331.

[0114] If the base station supports subband non-overlapping fullduplex communication, then in the SBFD symbols or SBFD slots that form the UL subband configuration as described above, in order to transmit the PRACH preamble through the corresponding UL subband, additional PRACH resources are allocated besides the PRACH resources allocated for the non-SBFD slots. This not only increases the UE's RACH resources but also helps to mitigate RACH delay issues that may occur in TDD. However, since the SBFD area is defined as utilizing existing DL resources, it may be difficult to allocate the same number of PRACH resources as in the non-SFBD area.

[0115] Because the terminal selects the next available RO when transmitting the PRACH preamble, this area can be either an SBFD resource or a non-SBFD resource. A scheme needs to be defined to efficiently utilize PRACH resources belonging to two different areas.

[0116] Figure 9 This is a flowchart illustrating a terminal operation method according to an embodiment of this specification.

[0117] One embodiment of this specification defines a method and RACH procedure for effectively selecting a terminal's PRACH resource when both PRACH resources allocated to SBFD symbols and PRACH resources allocated to non-SBFD symbols exist. More specifically, it is recommended that even if the RACH configuration of the PRACH allocated to the SBFD time slot is set by an additional RACH configuration in addition to the existing configuration, the SSB-RO (synchronization signal timing - RACH timing) mapping rule for random access (RA) resources within the SBFD time slot is the same as the legacy RACH configuration.

[0118] refer to Figure 9 The terminal receives from the base station the Random Access Channel (RACH) settings for non-SBFD symbols and the additional RACH settings for SBFD symbols (S901). Afterward, the terminal sets the SSB-RO mapping rule for SBFD symbols to the mapping rule for non-SBFD symbols (S902).

[0119] Meanwhile, this invention assumes that an additional RACH configuration for the SBFD cognitive terminal is set via radio resource control (RRC). In this case, the parameters for the RO and PRACH resources of the SBFD symbol can be reset to values ​​suitable for the SBFD symbol, different from the RACH configuration for non-SBFD symbols. However, even with the additional RACH configuration, this invention directly applies the SSB-RO mapping rule for non-SBFD symbols to the RO set for the SBFD symbol.

[0120] This means that when additional RACH configuration is performed on SBFD symbols, the setting of the "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" parameter can be accomplished by at least one of the methods described below. The "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" parameter can be defined as shown in the table below.

[0121] [Table 5]

[0122]

[0123]

[0124] Method 1. Omit the "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" parameter in the RACH configuration for SBFD symbols. This means applying the "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" value for the RACH configuration used for legacy or non-SBFD symbols.

[0125] Method 2. Set to the same value as the RACH configuration for either the legacy or non-SBFD symbol.

[0126] Method 3. The terminal sets the “ssb-perRACH-OccasionAndCB-PreamblesPerSSB” value of the RACH configuration for SBFD symbols to the “ssb-perRACH-OccasionAndCB-PreamblesPerSSB” value of the RACH configuration for legacy or non-SBFD symbols.

[0127] Method 4. Omit the value of the ENUMERATED part of "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" in the RACH configuration for SBFD symbols. This means applying the value of the ENUMERATED part of the RACH configuration for legacy or non-SBFD symbols.

[0128] Method 5. Set to the same value as the ENUMERATED section of "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" in the RACH configuration for the legacy or non-SBFD symbol.

[0129] Method 6. In the RACH configuration for SBFD symbols, the terminal sets the value of the ENUMERATED part of "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" to the value of the ENUMERATED part of the RACH configuration for legacy or non-SBFD symbols.

[0130] In other words, the SBFD cognitive terminal proposed in this invention can apply the SSB-RO mapping rules to the ROs of SBFD symbols using at least one of the methods suggested above. This allows for separate mapping of ROs in SBFD symbols and ROs in non-SBFD symbols, or continuous mapping from the SSB index of legacy ROs, or the application of the SSB index as in legacy ROs.

[0131] Figures 10A to 10B This is an example illustrating a synchronization signal timing (RACH) mapping method according to an embodiment of this specification.

[0132] Figure 10A This illustrates the case where the legacy "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" is directly applied to the RACH configuration for SBFD symbols, showing the RACH timing (RO) for non-SBFD symbols and the RO for SBFD symbols. That is, in the aforementioned legacy or non-SBFD symbol RACH configurations, the CHOICE and ENUMERATED parts of the "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" parameter are applied identically to the RO for SBFD symbols. Figure 10A In the example, the number of SSBs 2 (SSB#0,1 / #2,3 / #4,5 / #6,7) for each RO of the non-SBFD symbol is the same as that applied to each RO of the SBFD symbol. Furthermore, the number of preambles for each SSB is also set in the same way.

[0133] Figure 10BThis illustrates the case where only the ENUMERATED portion of the traditional "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" parameter is applied to the RACH configuration for SBFD symbols, for both the RO (Return on Array) and RO configurations for non-SBFD symbols. In other words, in the aforementioned traditional or non-SBFD symbol RACH configurations, only the ENUMERATED portion of the "ssb-perRACH-OccasionAndCB-PreamblesPerSSB" parameter is applied to the RO configuration for SBFD symbols. Figure 10B In the example, only the number of preambles for each SSB is applied the same, and the number of SSBs for each RO for non-SBFD symbols is 2 (SSB#0,1 / #2,3 / #4,5 / #6,7), and the number of SSBs for each RO for SBFD symbols is 1 (SSB#0 / #1 / #2 / #3 / #4 / #5 / #6 / #7), thus allowing for different applications.

[0134] Figure 11 This is a flowchart illustrating a terminal operation method according to another embodiment of this specification.

[0135] refer to Figure 11 The terminal receives first RACH resource information about SBFD symbols and second RACH resource information about non-SBFD symbols from the base station (S1101). Furthermore, the terminal obtains first mapping information regarding the number of synchronization signal blocks (SSBs) mapped for each RACH occasion based on SBFD symbols, and second mapping information regarding the number of preambles allocated to each SSB for RACH occasions based on SBFD symbols (S1102). The first and second mapping information can be obtained based on the second RACH resource information.

[0136] The terminal can determine the RACH timing for a specific SSB based on the obtained first and second mapping information. Furthermore, the terminal can transmit a preamble to the base station using the determined RACH timing.

[0137] The settings for the first RACH resource information can be based on the settings for the second RACH resource information. Alternatively, the settings for the first RACH resource information can be independent of the settings for the second RACH resource information.

[0138] The first random access channel resource information can be configured to exclude the first mapping information and the second mapping information. Alternatively, the second RACH resource information can be configured to include the first mapping information and the second mapping information.

[0139] On the one hand, RACH timing based on the SBFD symbol and SSB based on the non-SBFD symbol can be mapped separately.

[0140] The disclosure of this specification, as described above, can be implemented in various ways. For example, the disclosure of this specification can be implemented by hardware, firmware, software, or a combination thereof. Specifically, it will be described below with reference to the accompanying drawings.

[0141] Figure 12 An apparatus according to one embodiment of this specification is shown.

[0142] Reference Figure 12 The wireless communication system may include a first device 100a and a second device 100b.

[0143] The first device 100a may be a base station, network node, transmission terminal, receiving terminal, wireless device, wireless communication equipment, vehicle, vehicle equipped with autonomous driving function, connected car, unmanned aerial vehicle (UAV), AI (Artificial Intelligence) module, robot, AR (Augmented Reality) device, VR (Virtual Reality) device, MR (Mixed Reality) device, holographic device, public safety device, MTC device, IoT device, medical device, fintech device (or financial device), security device, climate / environment device, 5G service related device, or other devices related to the Fourth Industrial Revolution.

[0144] The second device 100b can be a base station, network node, transmission terminal, receiving terminal, wireless device, wireless communication equipment, vehicle, vehicle equipped with autonomous driving function, connected car, unmanned aerial vehicle (UAV), AI (Artificial Intelligence) module, robot, AR (Augmented Reality) device, VR (Virtual Reality) device, MR (Mixed Reality) device, holographic device, public safety device, MTC device, IoT device, medical device, fintech device (or financial device), security device, climate / environment device, 5G service related device, or other devices related to the Fourth Industrial Revolution.

[0145] The first device 100a may include: at least one processor, such as processor 1020a; at least one memory, such as memory 1010a; and at least one transceiver, such as transceiver 1031a. The processor 1020a can perform the aforementioned functions, steps, and / or methods. The processor 1020a can execute more than one protocol. For example, the processor 1020a can execute more than one layer of a wireless interface protocol. The memory 1010a can be connected to the processor 1020a and store various forms of information and / or instructions. The transceiver 1031a can be connected to the processor 1020a and control the transmission and reception of wireless signals.

[0146] The second device 100b may include at least one processor, such as processor 1020b; at least one or more memory devices, such as memory 1010b; and at least one transceiver, such as transceiver 1031b. The processor 1020b may perform the aforementioned functions, steps, and / or methods. The processor 1020b may implement more than one protocol. For example, the processor 1020b may implement more than one layer of a wireless interface protocol. The memory 1010b may be connected to the processor 1020b and store various forms of information and / or instructions. The transceiver 1031b may be connected to the processor 1020b and control the transmission and reception of wireless signals.

[0147] The memory 1010a and / or the memory 1010b can be connected internally or externally to the processor 1020a and / or the processor 1020b, or they can be connected to other processors via various technologies such as wired or wireless connections.

[0148] The first device 100a and / or the second device 100b may have more than one antenna. For example, antenna 1036a and / or antenna 1036b may be configured to transmit and receive wireless signals.

[0149] Figure 13 A block diagram illustrating the configuration of a terminal according to an embodiment of this specification.

[0150] in particular Figure 13 This is to show the foregoing in more detail. Figure 12 A diagram of the device.

[0151] The device includes a memory 1010, a processor 1020, a transmitter / receiver unit 1031, a power supply unit 1090 including a power management module 1091 and a battery 1092, a display device 1041, an input unit 1053, a speaker 1042 and a microphone 1052, a SIM (subscriber identification module) card, and one or more antennas.

[0152] Processor 1020 can be configured to implement the functions, steps, and / or methods described and presented in this specification. The radio interface protocol layer can be implemented in processor 1020. Processor 1020 may include an ASIC (application-specific integrated circuit), other chipsets, logic circuits, and / or data processing devices. Processor 1020 may be an application processor (AP). Processor 1020 may include at least one of a DSP (digital signal processor), CPU (central processing unit), GPU (graphics processing unit), and modem (modulator and demodulator). Processor 1020 may, for example, be... The SNAPDRAGON™ series processors manufactured The EXYNOS™ series processors manufactured Manufactured A-series processors, The manufactured HELIO™ series processors The manufactured ATOM™ series processors The KIRINTM series processors or corresponding next-generation processors manufactured.

[0153] The power management module 1091 manages the power of the processor 1020 and / or the transceiver unit 1031. The battery 1092 supplies power to the power management module 1091. The display device 1041 outputs the results processed by the processor 1020. The input unit 1053 receives inputs to be used by the processor 1020. The input unit 1053 can be displayed on the display device 1041. A SIM card is an integrated circuit used to identify and authenticate the IMSI (International Mobile Subscriber Identity) of a network user in mobile devices such as mobile phones and computers, and to securely store the associated keys. Phonebook information can also be stored in many SIM cards.

[0154] Memory 1010 is operatively integrated with processor 1020 to store various information for enabling processor 1010 to operate. Memory 1010 may include ROM (read-only memory), RAM (random access memory), flash memory, memory card, storage medium, and / or other storage devices. When embodiments are implemented in software, the techniques described herein can be implemented as modules (e.g., steps, functions, etc.) that perform the functions described herein. Modules may be stored in memory 1010 and executed by processor 1020. Memory 1010 may be implemented internally to processor 1020. Alternatively, memory 1010 may be implemented externally to processor 1020 and may be communicatively connected to processor 1020 by various means known in the art.

[0155] Transceiver 1031 is operatively coupled to processor 1020 to transmit and / or receive wireless signals. Transceiver 1031 includes a transmitter and a receiver. Transceiver 1031 may include baseband circuitry for processing wireless frequency signals. Transceiver 1031 controls one or more wires to transmit and / or receive wireless signals. To initiate communication, processor 1020 sends instruction information to transceiver 1031 to transmit wireless signals, such as those constituting voice communication data. Antenna performs the function of transmitting and receiving wireless signals. When receiving wireless signals, transceiver 1031 can transmit signals and convert them into baseband for processing by processor 1020. The processed signals can be converted into auditory or visual information output through speaker 1042.

[0156] Speaker 1042 outputs the sound-related results processed by processor 1020. Microphone 1052 receives the sound-related inputs that processor 1020 will use.

[0157] Users may input instructions such as pressing a button (or touching) on ​​the input unit 1053 or through voice activation based on the microphone 1052 to enter a phone number. The processor 1020 receives and processes this instruction information to perform appropriate functions such as making a phone call. Operational data can be retrieved from the SIM card or memory 1010. Additionally, the processor 1020 can display the instruction or operation information on the display device 1041 for user convenience.

[0158] Figure 14 A block diagram illustrating the configuration of the processor disclosed in this specification is shown.

[0159] Reference Figure 14 As can be seen, implementing the processor 1020 disclosed in this specification may include multiple circuits to implement the functions, steps, and / or methods described and proposed in this specification. For example, the processor 1020 may include a first circuit 1020-1, a second circuit 1020-2, and a third circuit 1020-3. Additionally, although not shown, the processor 1020 may include more circuits. Each circuit may include multiple transistors.

[0160] The processor 1020 may also be referred to as an ASIC (application-specific integrated circuit) or an AP (application processor), and may include at least one of a DSP (digital signal processor), a CPU (central processing unit), or a GPU (graphics processing unit).

[0161] Figure 15 To show in detail Figure 12 The receiver or transmitter of the first device shown Figure 13 A block diagram of the receiving and transmitting section of the device shown.

[0162] Reference Figure 15The transceiver unit 1031 includes a transmitter 1031-1 and a receiver 1031-2. The transmitter 1031-1 includes a Discrete Fourier Transform (DFT) unit 1031-11, a subcarrier mapper 1031-12, an IFFT unit 1031-13, a CP insertion unit 1031-14, and a wireless transmission unit 1031-15. The transmitter 1031-1 may also include a modulator. Additionally, it may include, for example, a scramble unit (not shown), a modulation mapper (not shown), a layer mapper (not shown), and a layer permutator (not shown), which may be configured before the DFT unit 1031-11. That is, to prevent an increase in the peak-to-average power ratio (PAPR), the transmitter 1031-1 first passes the information through the DFT 1031-11 before mapping the signal to the subcarriers. The signal spread (or synonymously precoded) by the DFT section 1031-11 is subcarrier mapped by the subcarrier mapper 1031-12, and then formed into a signal on the time axis by the IFFT (Inverse Fast Fourier Transform) section 1031-13.

[0163] The DFT unit 1031-11 performs a DFT on the input symbols to output complex-valued symbols. For example, if the input symbols are Ntx (but Ntx is a natural number), the DFT size is Ntx. The DFT unit 1031-11 can be called a transform precoder. The subcarrier mapper 1031-12 maps the complex symbols to subcarriers in the frequency domain. The complex symbols can be mapped to resource elements corresponding to resource blocks allocated for data transmission. The subcarrier mapper 1031-12 can be called a resource element mapper. The IFFT unit 1031-13 performs an IFFT on the input symbols to output a baseband signal for data as a time-domain signal. The CP insertion unit 1031-14 copies the latter part of the baseband signal for data and inserts it into the former part of the baseband signal for data. By inserting CP, ISI (Inter-Symbol Interference) and ICI (Inter-Carrier Interference) can be prevented, and orthogonality can be maintained in multiplexed channels.

[0164] On the other hand, receiver 1031-2 includes a wireless receiving unit 1031-21, a CP removal unit 1031-22, an FFT unit 1031-23, and an equalization unit 1031-24. The wireless receiving unit 1031-21, CP removal unit 1031-22, and FFT unit 1031-23 of receiver 1031-2 perform the opposite functions of the wireless transmitting unit 1031-15, CP insertion unit 1031-14, and IFF unit 1031-13 in transmitter 1031-1. Receiver 1031-2 may also include a demodulator.

[0165] The preferred embodiments have been described above by way of example, but the disclosure of this specification is not limited to these specific embodiments. Therefore, it can be modified, altered or improved into various forms within the scope of the spirit and claims of this specification.

[0166] In the exemplary system described above, the method is described as a series of steps or blocks based on the flowchart, but is not limited to the order of the described steps. Some steps may be performed in a different order or simultaneously. Furthermore, those skilled in the art will understand that the steps shown in the flowchart are not exclusive, and may include other steps or may delete one or more steps from the flowchart without affecting the scope of the claims.

[0167] The claims described in this specification can be combined in various ways. For example, the technical features of the method claims described in this specification can be combined and implemented by an apparatus, and the technical features of the apparatus claims described in this specification can be combined and implemented by a method. Furthermore, the technical features of the method claims and the apparatus claims described in this specification can be combined and implemented by an apparatus, and the technical features of the method claims and the apparatus claims described in this specification can be combined and implemented by a method.

Claims

1. A method for operating a terminal in a wireless communication system, the method comprising: The steps of receiving first random access channel resource information about sub-band full-duplex communication symbols and second random access channel resource information about non-sub-band full-duplex communication symbols; as well as The steps of obtaining i) first mapping information regarding the number of synchronization signal blocks mapped to each random access channel timing based on the sub-band full-duplex communication symbol, and ii) second mapping information regarding the number of preambles allocated to each synchronization signal block for the random access channel timing based on the sub-band full-duplex communication symbol, are as follows: The first mapping information and the second mapping information are obtained based on the second random access channel resource information.

2. The operating method according to claim 1 further includes: The step of determining the timing of random access to the channel for a specific synchronization signal block based on the obtained first mapping information and second mapping information.

3. The operating method according to claim 2 further includes: The step of transmitting the preamble at the determined random access channel timing.

4. The operating method according to claim 1, wherein, The setting of the first random access channel resource information is based on the setting of the second random access channel resource information.

5. The operating method according to claim 1, wherein, The setting of the first random access channel resource information is independent of the setting of the second random access channel resource information.

6. The operating method according to claim 1, wherein, Synchronization signal blocks for random access channel timing based on the sub-band full-duplex communication symbols and for random access channel timing based on the non-sub-band full-duplex communication symbols are mapped separately.

7. The operating method according to claim 1, wherein, The first random access channel resource information is set to exclude the first mapping information and the second mapping information.

8. The operating method according to claim 1, wherein, The second random access channel resource information is configured to include the first mapping information and the second mapping information.

9. A terminal in a wireless communication system, the terminal comprising: At least one processor; as well as At least one memory, storing instructions and operatively electrically connected to the at least one processor, and The at least one processor performs an operation based on the instruction, the operation of which includes: The steps of receiving first random access channel resource information about sub-band full-duplex communication symbols and second random access channel resource information about non-sub-band full-duplex communication symbols; as well as The steps of obtaining i) first mapping information regarding the number of synchronization signal blocks mapped to each random access channel timing based on the sub-band full-duplex communication symbol, and ii) second mapping information regarding the number of preambles allocated to each synchronization signal block for the random access channel timing based on the sub-band full-duplex communication symbol, are as follows: The first mapping information and the second mapping information are obtained based on the second random access channel resource information.

10. The terminal according to claim 9, wherein the operation is performed by the at least one processor based on the instruction, and the operation performed further includes: The step of determining the timing of random access to the channel for a specific synchronization signal block based on the obtained first mapping information and second mapping information.

11. The terminal according to claim 10, wherein the operation is performed by the at least one processor based on the instruction, and the operation performed further includes: The step of transmitting the preamble at the determined random access channel timing.

12. The terminal according to claim 9, wherein, The setting of the first random access channel resource information is based on the setting of the second random access channel resource information.

13. The terminal according to claim 9, wherein, The setting of the first random access channel resource information is independent of the setting of the second random access channel resource information.

14. The terminal according to claim 9, wherein, Synchronization signal blocks for random access channel timing based on the sub-band full-duplex communication symbols and for random access channel timing based on the non-sub-band full-duplex communication symbols are mapped separately.

15. The terminal according to claim 9, wherein, The first random access channel resource information is set to exclude the first mapping information and the second mapping information.

16. The terminal according to claim 9, wherein, The second random access channel resource information is configured to include the first mapping information and the second mapping information.

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