Time slot format setting method and device for full-duplex communication in wireless communication system

Abstract

The present disclosure provides a method and apparatus for performing downlink transmission and / or uplink transmission in a wireless communication system. A base station transmits, to a terminal, sub-band setting information for a full duplex communication (full duplex). The terminal performs downlink reception or uplink transmission through a sub-band based on received sub-band setting information, the sub-band setting information including time axis resource setting information, the time axis resource setting information including reference subcarrier spacing (SCS) setting information and at least one piece of mode setting information, and the at least one piece of mode setting information including at least one piece of mode setting information. Each of the at least one piece of mode setting information includes cycle information.

Description

Technical Field

[0001] This specification relates to the 3GPP 5G NR system. Background Art

[0002] As the trend of the times develops, more and more communication devices require larger communication traffic, requiring wireless broadband communication that is improved over the existing LTE system, namely the next-generation 5G system. In this next-generation 5G system called NewRAT, communication scenarios are divided into enhanced mobile broadband (Enhanced Mobile BroadBand, eMBB) / ultra-reliability and low-latency communication (URLLC) / massive machine-type communications (mMTC) and so on.

[0003] Among them, eMBB is the next-generation mobile communication scenario with the characteristics of high spectrum efficiency, high user experience data rate, high peak data rate, etc.; URLLC is the next-generation mobile communication scenario with the characteristics of ultra-reliability, ultra-low latency, ultra-high availability, etc. (for example, V2X, emergency services, remote control); mMTC is the next-generation mobile communication scenario with the characteristics of low cost, low energy consumption, short data packets, and massive connections (for example, IoT). Summary of the invention

[0004] Technical issues

[0005] The disclosure of this specification aims to provide a method and apparatus for a base station and a terminal to perform downlink transmission and / or uplink transmission and / or reception through a subband for full-duplex communication in a wireless communication system.

[0006] Technical Solution

[0007] An embodiment of the present specification provides a method, in which, in a wireless communication system, a terminal receives subband setting information for full-duplex communication (full duplex), and performs downlink reception or uplink transmission through a subband based on the received subband setting information, the subband setting information includes time axis resource setting information, the time axis resource setting information includes reference subcarrier spacing (SCS) setting information and at least one mode setting information, each mode setting information of the at least one mode setting information includes period information.

[0008] In addition, an embodiment of the present invention provides a method, in which, in a wireless communication system, a base station transmits subband setting information for full-duplex communication; and downlink transmission or uplink reception is performed through a subband based on the transmitted subband setting information, the subband setting information includes time axis resource setting information, the time axis resource setting information includes reference subcarrier spacing (SCS) setting information and at least one mode setting information, and each mode setting information of the at least one mode setting information includes period information.

[0009] In addition, an embodiment of the present invention provides a communication device, which includes: at least one processor in a wireless communication system; and at least one memory for storing instructions and operably electrically connected to the at least one processor, and the instructions are executed by the at least one processor, and the operations performed include: receiving subband setting information for full-duplex communication, and performing downlink reception or uplink transmission through a subband based on the received subband setting information, the subband setting information includes timeline resource setting information, the timeline resource setting information includes reference subcarrier spacing (SCS) setting information and at least one mode setting information, and each mode setting information of the at least one mode setting information includes period information.

[0010] In addition, an embodiment of the present invention provides a base station, which includes: at least one processor in a wireless communication system; and at least one memory for storing instructions and operably electrically connected to the at least one processor, and the instructions are executed by the at least one processor, and the operations performed include: receiving subband setting information of full-duplex communication, and performing downlink reception or uplink transmission through the subband based on the received subband setting information, the subband setting information includes time axis resource setting information, the time axis resource setting information includes reference subcarrier spacing (SCS) setting information and at least one mode setting information, and each mode setting information of the at least one mode setting information includes period information.

[0011] The reference subcarrier spacing (SCS) setting information, the number of at least one mode setting information and the period information of each mode setting information are determined based on information corresponding to an information element contained in a time division duplex (TDD) uplink-downlink configuration common (tdd-UL-DL-ConfigurationCommon) information element.

[0012] Each of the at least one mode setting information further includes offset information indicating a start point or an end point of the sub-frequency band.

[0013] In addition, as another embodiment, the starting point or end point of the sub-band is fixed by a specific symbol of each mode. In this case, the specific symbol can be one of the first symbol, the first downlink symbol, the last downlink symbol, and the symbol before the first uplink symbol of the mode.

[0014] Each mode setting information of the at least one mode setting information may also include duration information and is based on the number of subband full duplex (SBFD) time slots and / or the number of SBFD symbols. The duration information is set in addition to the symbols of the synchronization signal block (SSB). To this end, in the duration information, the base station sends information indicating whether to exclude the symbols of the synchronization signal block (SSB) and the terminal receives it.

[0015] Beneficial Effects

[0016] According to the disclosure of the present specification, downlink transmission and / or uplink transmission and / or uplink transmission can be efficiently performed through a subband for full duplex communication in a wireless communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A diagram illustrating a wireless communication system.

[0018] Figure 2 The structure of the radio frame used by NR is shown.

[0019] Figure 3a to Figure 3c An exemplary diagram illustrating an exemplary architecture for wireless communication services.

[0020] Figure 4 Shows the time slot structure of the NR frame.

[0021] Figure 5 Examples of subframe types in NR are shown.

[0022] Figure 6 The structure of a self-contained time slot is shown.

[0023] Figure 7a to Figure 7b A generalized example of subband full duplex communication is shown.

[0024] Figure 8 An example of time slot configuration for subband full-duplex communication (full duplex) according to an embodiment of the present specification is shown.

[0025] Fig. 9 Another example of time slot configuration for subband full-duplex communication according to an embodiment of the present specification is shown.

[0026] Fig.10 The following describes an operation method of a terminal according to an embodiment of the present specification.

[0027] Fig.11 The following describes an operation method of a base station according to an embodiment of the present specification.

[0028] Fig.12 A device according to an embodiment of the present specification is shown.

[0029] Fig.13 A block diagram showing the structure of a terminal according to an embodiment of the present specification.

[0030] Fig.14 A block diagram showing the structure of a processor that implements the disclosure of this specification.

[0031] Fig.15 To show in detail Fig.12 The first device of the transceiver or Fig.13 Block diagram of the receiving and transmitting part of the device shown. DETAILED DESCRIPTION

[0032] 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. In addition, as long as they are not specifically defined as different meanings in the present invention, the technical terms used in this specification should be interpreted as the meanings commonly understood by ordinary technicians in the field to which this specification discloses, and should not be interpreted as overly broad meanings or overly narrow meanings. In addition, when the technical terms used in the specification are inappropriate technical terms that cannot accurately express the content and ideas of this specification, they must be replaced with technical terms that can be correctly understood by technicians. In addition, the common terms used in this specification must be interpreted according to the pre-defined content or context, and should not be interpreted as overly narrow meanings.

[0033] In addition, as long as the context does not clearly indicate otherwise, singular expressions used in this specification include plural expressions. In this application, terms such as "consisting of" or "having" should not be interpreted as necessarily including all of the multiple constituent elements or multiple steps recorded in the specification, but should be interpreted as not including some of the constituent elements or some of the steps, or may also include additional constituent elements or steps.

[0034] In addition, the terms including ordinal numbers such as 1 and 2 used in this specification can be used to describe various constituent elements, but the constituent elements shall not be limited by the terms. The terms are only used to distinguish one constituent element from another constituent element. For example, without exceeding the scope of the rights, the first constituent element can be named as the second constituent element, and similarly, the second constituent element can also be named as the first constituent element.

[0035] When a certain component is mentioned as being “connected” or “connected to” another component, it may be directly connected or connected to the other component, or other components may be present in between. Conversely, when a certain component is mentioned as being “directly connected” or “directly connected to” another component, it should be understood that no other components are present in between.

[0036] The following is a detailed description of the embodiments with reference to the accompanying drawings. Regardless of the figure numbers, the same or similar components are assigned the same figure numbers and their repeated descriptions are omitted. In addition, in describing the content of the present invention, when it is judged that the specific description of the relevant known technology may confuse the gist of this specification, the detailed description is omitted. In addition, it should be noted that the drawings are only used to make it easier to understand the content and ideas of this specification, and should not be interpreted as the content and ideas of this specification are limited by the drawings. The content and ideas of this specification should be interpreted as extending to all changes, equivalents and substitutes in addition to the drawings.

[0037] In this specification, "A or B" may mean "only A", "only B", or "all A and B". In other words, in this specification, "A or B" may be interpreted as "A and / or B". For example, in this specification, "A, B or C" may mean "only A", "only B", "only C", or "any combination of A, B and C".

[0038] A slash ( / ) or a comma used in this specification may mean "and / or". For example, "A / B" may mean "A and / or B". Thus, "A / B" may mean "only A", "only B", or "all of A and B". For example, "A, B, C" may mean "A, B, or C".

[0039] In the present specification, “at least one of A and B” may mean “only A”, “only B” or “all of A and B”. In addition, in the present specification, the expression “at least one of A or B” or “at least one of A and / or B” may be interpreted the same as “at least one of A and B”.

[0040] In addition, in the present specification, “at least one of A, B and C” may mean “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”.

[0041] In addition, brackets used in this specification may mean "for example". Specifically, when identified as "control information (PDCCH)", "PDCCH (physical downlink control channel)" may be proposed as an example of "control information". In other words, the "control information" of this specification is not limited by "PDCCH", and "PDDCH" may be proposed as an example of "control information". In addition, when identified as "control information (i.e., PDCCH)", "PDCCH" may be proposed as an example of "control information".

[0042] In this specification, the technical features described separately in one drawing can be implemented independently or simultaneously.

[0043] In the accompanying drawings, UE (User Equipment) is exemplarily shown, but the UE shown may also be replaced by a term such as a terminal (Terminal), ME (Mobile Equipment), etc. In addition, the UE may be a portable device such as a notebook computer, a mobile phone, a PDA (Personal Digital Assistant), a smart phone (Smart Phone), a multimedia device, etc., or a non-portable device such as a PC, a vehicle-mounted device, etc.

[0044] In the following, UE is used as an example of a device capable of wireless communication (e.g., a wireless communication device, a wireless device, or a wireless equipment). The operations performed by UE can be performed by any device capable of wireless communication. It may also be referred to as a device capable of wireless communication, a wireless communication device, a wireless device, or a wireless equipment, etc.

[0045] The term base station used below generally refers to a fixed station that communicates with wireless devices, and can be used as a broad term including eNodeB (evolved-NodeB), eNB (evolved-NodeB), BTS (Base TransceiverSystem), access point (Access Point), gNB (Next generation NodeB), RRH (remote radiohead), TP (transmission point), RP (reception point), relay, etc.

[0046] This specification uses the LTE system, LTE-A system and NR system to describe the embodiments, but these embodiments can also be applied to any communication system to which the definitions are applicable.

[0047] <Wireless Communication System>

[0048] Benefiting from the success of LTE (long term evolution) / LTE-Advanced (LTE-A) used for the fourth generation mobile communication, the fifth generation (so-called 5G) mobile communication as the next generation has been commercialized and subsequent research is underway.

[0049] The fifth generation of mobile communications defined by the International Telecommunication Union (ITU) refers to providing a maximum data transmission speed of 20Gbps and a minimum perceptible transmission speed of more than 100Mbps at any location. The official name is "IMT-2020".

[0050] Three major usage scenarios were proposed in the ITU, such as eMBB (enhanced Mobile BroadBand), mMTC (massive Machine Type Communication) and URLLC (Ultra Reliable and Low Latency Communications).

[0051] URLLC involves application scenarios that require high reliability and low latency. For example, autonomous driving, factory automation, and augmented reality services require high reliability and low latency (for example, latency below 1ms). The current latency of 4G (LTE) is statistically 21-43ms (best 10%) and 33-75ms (median). This is not enough to support services that require latency below 1ms. Then, eMBB usage scenarios involve usage scenarios that require mobile ultra-wideband.

[0052] That is, the fifth-generation mobile communication system supports higher capacity than the current 4G LTE, can increase the density of mobile broadband users, and supports D2D (Device to Device), high stability and MTC (Machine type communication). In order to better realize the Internet of Things, 5G research and development also aims at lower standby time and lower power consumption than 4G mobile communication systems. For this 5G mobile communication, a new radio access technology (new radio access technology: New RAT or NR) can be proposed.

[0053] The NR frequency band can be defined as two types of frequency ranges (FR1, FR2). The values ​​of the frequency ranges can be changed. For example, the frequency ranges of the two types (FR1, FR2) can be shown in Table 1 below. For ease of description, FR1 in the frequency range used by the NR system can mean "sub 6GHz range", and FR2 can mean "above 6GHz range", which can be called millimeter wave (mmW).

[0054] [Table 1]

[0055]

[0056] The frequency range value of the NR system can be changed. For example, FR1, as shown in Table 1, can include a frequency band from 410 MHz to 7125 MHz. That is, FR1 can include a frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included in FR1 may include an unlicensed band. The unlicensed band can be used for a variety of purposes, for example, it can be used for vehicle communications (e.g., autonomous driving).

[0057] On the other hand, the communication standard based on 3GPP defines downlink physical channels corresponding to resource elements that carry information from the upper layer, and downlink physical signals corresponding to resource elements that are used by the physical layer but do not carry 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, and reference signals and synchronization signals are defined as downlink physical signals. Reference signal (RS), also known as pilot, means a signal of a predefined special waveform known to both the gNB and the UE. For example, cell specific RS, UE-specific RS, positioning RS (PRS), and channel state information RS (CSI-RS) are defined as downlink reference signals. The 3GPP LTE / LTE-A standard defines uplink physical channels corresponding to resource elements that carry information from the upper layer and uplink physical signals corresponding to resource elements used by the physical layer but do not carry information from the upper layer. For example, physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), and physical random access channel (PRACH) are defined as uplink physical channels, and a demodulation reference signal (DMRS) for uplink control / data signals and a sounding reference signal (SRS) for uplink channel measurement are defined.

[0058] In this specification, PDCCH (Physical Downlink Control CHannel) / PCFICH (Physical Control Format Indicator CHannel) / PHICH (Physical Hybrid automatic retransmit request Indicator CHannel) / PDSCH (Physical Downlink Shared CHannel) respectively refer to a set of time-frequency resources or a set of resource elements carrying DCI (downlink control information) / CFI (Control Format Indicator) / downlink ACK / NACK (ACK nowlegement / Negative ACK) / downlink data. In addition, PUCCH (Physical Uplink Control CHannel) / PUSCH (Physical Uplink Shared CHannel) / PRACH (Physical Random Access CHannel) respectively refer to a set of time-frequency resources or a set of resource elements carrying UCI (Uplink Control Information) / uplink data / random access signals.

[0059] Figure 1 A diagram illustrating a wireless communication system.

[0060] Reference Figure 1 It can be seen that the wireless communication system includes at least one base station (BS). The BS is divided into gNodeB (or gNB) 20a and eNodeB (or eNB) 20b. The gNB 20a supports the fifth generation of mobile communications. The eNB 20b supports the fourth generation of mobile communications, namely LTE (long term evolution).

[0061] Each base station 20a and 20b provides communication services for a specific geographical area (commonly referred to as a cell) 20-1, 20-2, 20-3. A cell may be further divided into a plurality of areas (referred to as sectors).

[0062] UE (User Equipment) usually belongs to a cell, and the cell to which the UE belongs is called a serving cell. The base station that provides communication services to the serving cell is called a serving BS. The wireless communication system is a cellular system, so there are other cells adjacent to the serving cell. Other cells adjacent to the serving cell are called neighbor cells. The base station that provides communication services to the neighbor cell is called a neighbor BS. The serving cell and the neighbor cell are relatively determined based on the UE.

[0063] In the following, downlink refers to communication from the base station 20 to the UE 10, and uplink refers to communication from the UE 10 to the base station 20. In the downlink, the transmitter may be a part of the base station 20, and the receiver may be a part of the UE 10. In the uplink, the transmitter may be a part of the UE 10, and the receiver may be a part of the base station 20.

[0064] On the other hand, wireless communication systems can be roughly divided into FDD (frequency division duplex) mode and TDD (time division duplex) mode. According to the FDD mode, uplink transmission and downlink transmission occupy different frequency bands. According to the TDD mode, uplink transmission and downlink transmission occupy the same frequency band and are performed at different times. The channel response of the TDD mode is essentially reciprocal. In a given frequency region, the downlink channel response and the uplink channel response are almost the same. Therefore, in a wireless communication system based on TDD, the downlink channel response has the advantages that can be obtained from the uplink channel response. In the TDD mode, uplink transmission and downlink transmission are time-divided for the entire frequency band, so the downlink transmission of the base station and the uplink transmission of the UE cannot be performed at the same time. In a TDD system where uplink transmission and downlink transmission are divided into subframe units, uplink transmission and downlink transmission are performed in different subframes.

[0065] Figure 2 The structure of the radio frame used by NR is shown.

[0066] In NR, uplink and downlink transmissions consist of frames. The radio frame has a length of 10ms and is defined as 2 5ms half-frames (HF). A half-frame is defined as 5 1ms subframes (SF). A subframe is divided into more than one time slot, and the number of time slots in a subframe depends on the SCS (Subcarrier Spacing). Each time slot includes 12 or 14 OFDM (A) symbols depending on the CP (cyclic prefix). When using a normal CP, each time slot includes 14 symbols. When using an extended CP, each time slot includes 12 symbols. Among them, the symbols may include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or DFT-s-OFDM symbols).

[0067] <Support for various parameter sets (numerology)>

[0068] In the NR system, with the development of wireless communication technology, multiple parameter sets (numerology) can also be provided to the terminal. For example, when the SCS is 15kHz, it supports wide areas in the traditional cellular band, when the SCS is 30kHz / 60kHz, it supports dense-urban, lower latency and wider carrier bandwidth, and when the SCS is 60kHz or higher, it supports bandwidths larger than 24.25GHz in order to overcome phase noise.

[0069] The parameter set may be defined according to the CP (cycle prefix) length and the subcarrier spacing (SCS). A cell may provide multiple parameter sets to a terminal. When μ is used to represent the parameter set index, the CP length corresponding to each subcarrier spacing may be as shown in the following table.

[0070] [Table 2]

[0071] 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

[0072] For a common CP, when μ represents the index of the parameter set, the number of OFDM symbols per time slot (N slot symb ), the number of time slots per frame (N frame,μ slot ) and the number of time slots in each subframe (N subframe,μ slot ) are shown in the following table.

[0073] [Table 3]

[0074] μ <![CDATA[Δf=2 μ 15[kHz]]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot ]]> 0 15 14 10 1 1 30 14 20 2 2 60 14 40 4 3 120 14 80 8 4 240 14 160 16 5 480 14 320 32 6 960 14 640 64

[0075] For extended CP, when μ represents the index of the parameter set, the number of OFDM symbols per time slot (N slot symb ), the number of time slots per frame (Nf rame,μ slot ) and the number of time slots in each subframe (N subframe,μ slot ) are shown in the following table.

[0076] [Table 4]

[0077]

[0078] In the NR system, OFDM (A) parameter sets (numerology) (e.g., SCS, CP length, etc.) can be set differently between multiple cells merged into one terminal. Therefore, the (absolute time) interval of time resources (e.g., SF, time slot or TTI) (collectively referred to as TU (Time Unit) for convenience) composed of the same number of symbols can be set differently between the merged cells.

[0079] Figure 3a to Figure 3c is an example diagram illustrating an exemplary architecture for wireless communication services.

[0080] Reference Figure 3a , the UE is connected to the LTE / LTE-A based cell and the NR based cell in DC (dual connectivity) mode.

[0081] The NR-based cell is connected to the core network used for the original fourth-generation mobile communication, namely EPC (Evolved Packet Core).

[0082] Reference Figure 3b , different from Figure 3a , the LTE / LTE-A based cells are connected to the core network for the fifth generation mobile communications, i.e., the 5G core network.

[0083] Will be based on Figure 3a and Figure 3b The service mode of the architecture shown is called NSA (non-standalone).

[0084] Reference Figure 3c , UE is only connected to the NR-based cell. The service mode based on this architecture is called SA (standalone).

[0085] On the other hand, in the NR, it can be considered that the reception from the base station utilizes the downlink subframe, and the transmission to the base station utilizes the uplink subframe. This approach can be applied to paired spectrum and unpaired spectrum. A pair of spectrum means including two carrier spectra for downlink and uplink operations. For example, in a pair of spectrum, a carrier may include a downlink frequency band and an uplink frequency band that are paired with each other.

[0086] Figure 4 Shows the time slot structure of the NR frame.

[0087] A slot includes multiple symbols in the time domain. For example, for a normal CP, a slot includes 14 symbols, and for an extended CP, a slot includes 12 symbols. A carrier includes multiple subcarriers in the frequency domain. An RB (Resource Block) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) is defined as multiple consecutive (physical, P) RBs in the frequency domain, which can correspond to a parameter set (numerology) (e.g., SCS, CP length, etc.). A terminal can form up to N (e.g., 4) BWPs in the downlink and uplink, respectively. Downlink or uplink transmission can be performed through an activated BWP, and at a given time, only one BWP established for the terminal can be activated. In a resource grid, each element is called a resource element (RE), which can map a complex symbol.

[0088] Figure 5 Examples of subframe types in NR are shown.

[0089] Figure 5 The TTI (transmission time interval) shown may be referred to as a subframe or time slot for NR (or new RAT). Figure 5 The subframes (or time slots) can be used in the TDD system of NR (or new RAT) to minimize the data transmission delay. Figure 5 As shown, a subframe (or time slot) includes 14 symbols. The front symbol of the subframe (or time slot) can be used for a downlink (DL) control channel, and the rear symbol of the subframe (or time slot) can be used for an uplink (UL) control channel. The remaining symbols can be used for DL ​​data transmission or UL data transmission. According to this subframe (or time slot) structure, downlink transmission and uplink transmission can be performed sequentially in one subframe (or time slot). Therefore, downlink data can be received in a subframe (or time slot), and uplink confirmation response (ACK / NACK) can also be transmitted in the subframe (or time slot).

[0090] This subframe (or time slot) structure may be referred to as a self-contained subframe (or time slot).

[0091] Specifically, the first N symbols in a time slot can be used to transmit a DL control channel (hereinafter referred to as the DL control region), and the last M symbols in a time slot can be used to transmit a UL control channel (hereinafter referred to as the UL control region). N and M are integers greater than or equal to 0, respectively. 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 for UL data transmission. For example, in the DL control region, a physical downlink control channel (PDCCH) can be transmitted, and in the DL data region, a physical downlink shared channel (PDSCH) can be transmitted. In the UL control region, a physical uplink control channel (PUCCH) can be transmitted, and in the UL data region, a physical uplink shared channel (PUSCH) can be transmitted.

[0092] If this subframe (or time slot) structure is used, it has the advantage of reducing the time required to retransmit data with reception errors to minimize the final data transmission standby time. In this self-contained subframe (or time slot) structure, a time gap is required during the migration from the transmission mode to the reception mode or from the reception mode to the transmission mode. For this reason, in the subframe structure, a part of the OFDM symbols when switching from DL to UL can be set as a guard period (GP).

[0093] Figure 6 The structure of a self-contained time slot is shown.

[0094] In the NR system, a frame is characterized by being a self-contained structure that can include all of the DL control channel, DL or UL data, UL control channel, etc. in one time slot. For example, the first N symbols in a time slot can be used to transmit a DL control channel (hereinafter referred to as the DL control region), and the last M symbols in a time slot can be used to transmit a 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 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 for UL data transmission. As an example, the following structure can be considered. The intervals are listed in chronological order.

[0095] 1.DL only configuration

[0096] 2.UL only configuration

[0097] 3. Mixed UL-DL Configuration

[0098] -DL area + GP (Guard Period) + UL control area

[0099] -DL control area + GP + UL area

[0100] DL area: (i) DL data area, (ii) DL control area + DL data area

[0101] UL area: (i) UL data area, (ii) UL data area + UL control area

[0102] PDCCH can be transmitted in the DL control region, and PDSCH can be transmitted in the DL data region. PUCCH can be transmitted in the UL control region, and PUSCH can be transmitted in the UL data region. DCI (Downlink Control Information), such as DL data scheduling information, UL data scheduling information, etc., can be transmitted in PDCCH. UCI (Uplink Control Information), such as ACK / NACK (Positive Acknowledgement / Negative Acknowledgement) information for DL ​​data, CSI (Channel State Information) information, SR (Scheduling Request), etc. can be transmitted in PUCCH. GP can provide a time difference in the process of the base station and the terminal switching from the transmission mode to the reception mode or from the reception mode to the transmission mode. Within a subframe, a part of the symbols at the time point of switching from DL to UL can be set as GP.

[0103] <Disclosure of this specification>

[0104] Time Division Duplex (TDD) is a duplexing method widely used in commercial new radio (NR), i.e., 5G mobile communication systems. In TDD, time period radio resources are divided into downlink time slots and uplink time slots for use. Usually, downlink time slots are distributed more than uplink time slots according to the allocation ratio of uplink traffic and downlink traffic. However, this limitation of uplink time slots has a negative impact on coverage and delay time. Full duplex communication has recently attracted attention as a technology to solve this problem.

[0105] Full duplex communication is a technology that performs DL transmission and UL reception simultaneously through the same (or specified) radio resources at the gNB (i.e., base station). DL reception and UL transmission can also be performed simultaneously on the terminal side. In other words, both the base station and the terminal can support full duplex communication. However, unlike the base station, which is structurally convenient for self-interference cancelation, the DL reception performance of the terminal is easily affected by the self-interference of the UL transmission signal. Therefore, it is generally considered that the gNB is operated by full duplex communication and the terminal is operated by half duplex communication. In addition, in order to reduce the influence of self-interference, DL transmission and UL reception are also performed simultaneously at the gNB, but the subband non-overlapping full duplex communication method is mainly considered so as to distinguish the green resources that are not the same resources between DL / UL and send and receive.

[0106] As described above, various full duplex communication application scenarios are being considered based on the capabilities of base stations and terminals, frequency bands, and frequency interference issues with other companies.

[0107] Figure 7a to Figure 7b A generalized example of subband full duplex communication is shown.

[0108] In a wireless communication system using OFDM, a duplex method called subband full duplex communication (full duplex) can be used. Among them, subband full duplex communication (full duplex) can be called subband full duplex communication (SBFD) or full duplex communication subband (FDSB). In this specification, even if the terms SBFD and FDSB are used interchangeably, they can actually have the same meaning.

[0109] In subband full duplex communication, a portion of the time-frequency resources on a given carrier is used for downlink, while a portion of the time-frequency resources on the same carrier is used for uplink. Specifically, downlink resources and uplink resources are distinguished from each other in the frequency domain and used for transmission and reception.

[0110] Figures 7a to 7b An example of SBFD is shown, but in the frequency domain Figure 7a An example is shown in which an uplink sub-band is located between downlink sub-bands, Figure 7b An example is shown in which the downlink sub-band is located between the uplink sub-bands. Although not shown in the drawings, a guard band or a guard period may be located between the downlink sub-band and the uplink sub-band to reduce interference.

[0111] In this specification, as a method for supporting subband non-overlapping full duplex communication in gNB, a subband-based UL-DL slot configuration method is proposed. However, the same content can be equally applicable to various full duplex application scenarios. For example, it can include full duplex operation in unpaired spectrum and full duplex operation in DL frequency band or UL frequency band of paired spectrum. In addition, as described above, sub-band non-overlapping full duplex communication or pure full duplex communication (i.e., DL transmission and UL reception are performed simultaneously on the same frequency resource) is supported only on the gNB side, and it can also be applicable to the scenario of performing half duplex communication operation on the terminal (UE). Furthermore, the contents of the present invention can also be applied not only in the gNB but also in the terminal (UE), when supporting sub-band non-overlapping full-duplex communication (sub-band non-overlapping full duplex) or pure full-duplex communication (full duplex).

[0112] When the base station supports full-duplex communication based on sub-band non-overlapping, it is necessary to use the frequency resources of a specific sub-band as DL symbols for DL ​​transmission in any unpaired spectrum, and the frequency resources of other sub-bands as UL symbols for UL reception. However, the UL-DL slot configuration defined in the current NR is defined as being formed by a cell unit through cell-specific radio resource control (RPC) signaling. That is, a pattern of DL symbols, UL symbols, and flexible symbols of a certain periodicity is configured through the RRC message 'tdd-UL-DL-ConfigurationCommon' for the corresponding UL-DL slot configuration. In addition, through the 'tdd-UL-DL-ConfigurationDedicated' as the terminal characteristic RRC signaling (UE-specific RRCsignaling), only the variable (flexible) symbols configured by the above-mentioned 'tdd-UL-DL-ConfigurationCommon' can be reallocated as UL symbols, DL symbols or variable (flexible) symbols according to each terminal. In addition, NR also defines a method for indicating the dynamic time slot format (dynamic slot format) through the terminal group common PDCCH (UE-group commonPDCCH). For this reason, NR also supports a dynamic (dynamic) form of time slot format (slot format) indication method through DCI format 2_0.

[0113] Figure 8 An example of time slot configuration for subband full-duplex communication (full duplex) according to an embodiment of the present specification is shown.

[0114] According to the above-mentioned conventional slot configuration method, any one symbol can be set or indicated as one of DL, UL or variable.

[0115] Reference Figure 8 , Figure 8The left side is an example of setting any time slot format to DDDSU through an existing time slot configuration. Here, D means that all OFDM symbols constituting the corresponding time slot by the downlink time slot are set to DL. U means that all OFDM symbols constituting the corresponding time slot by the uplink time slot are set to UL. S represents a time slot including a flexible symbol for DL / UL transition by a special time slot. Typically, in the case of a normal CP, a special time slot can be composed of 12 DL symbols and 2 flexible symbols out of a total of 14 symbols. Alternatively, it can be composed of 10 DL symbols, 2 flexible symbols and 2 UL symbols. That is, in any TDD carrier, a symbol is only set or indicated as one of DL, UL or flexible.

[0116] However, if Figure 8 As shown on the right side of , when UL FDSB is set in any DL time slot, any symbol including the corresponding UL FDSB may have a mixed transmission direction of 'DL and UL' or 'DL and flexible' according to the location of the frequency resource. In the present specification, a method for separately defining mixed link (Mixed Link, ML) symbols for symbols that can be different according to these frequency positions DL, UL and flexible is proposed. In other words, for existing DL, UL and flexible symbols, the base station / network can define symbols that are set or indicated as ML symbols. Here, the present invention is not limited to the name of the ML symbol. For example, even if it is called other names such as XL symbol, X symbol, etc., it is also included in the scope of the present specification.

[0117] As described above, any ML symbol can be subdivided into multiple types according to the combination of DL, UL and flexible in the corresponding symbol. For example, when DL FDSB is set in any time slot or symbol set by DL in the base station, any ML symbol including the corresponding UL FDSB has a "DL, UL" combination or a "DL, flexible" combination. Conversely, when DL FDSB is set in any UL time slot or UL symbol, any ML symbol including the corresponding DL FDSB can have a "UL, DL" or "UL, flexible" combination. Alternatively, when UL SBFD is set in a symbol set by flexible, it can be composed of a combination of "flexible, UL", and conversely, when DL SBFD is set, a combination of "flexible, DL" can be composed. In the case of any ML symbol, more than one ML symbol type may be defined according to the legacy slot configuration, ie, the slot configuration set by the existing 'tdd-UL-DL-ConfigurationCommon', 'tdd-UL-DL-ConfigurationDedicated' or DCI format 2_0, and whether UL or DL ​​SBFD is set or not.

[0118] When such a new ML symbol is defined as a symbol format and the ML symbol type is defined according to the combination of DL, UL and Flexible that constitute the ML symbol (i.e., the combination between the original slot configuration and the FDSB configuration), the base station / network can set or indicate the ML symbol and the type of the ML symbol when performing corresponding slot configuration for the terminal in the corresponding cell.

[0119] In the present invention, for the sake of convenience, the slot configuration supported in the existing NR rel-15, 16, and 17 is referred to as the legacy slot configuration. In other words, the slot configuration according to the existing 'tdd-UL-DL-ConfigurationCommon', 'tdd-UL-DL-ConfigurationDedicated' or DCIformat 2_0 is referred to as the legacy slot configuration.

[0120] In addition to sending legacy slot configuration information to any terminal in the corresponding cell as described above, any cell / base station can also send extended slot configuration information for terminals supporting subband non-overlapping full duplex communication.

[0121] In addition to the existing legacy slot configuration information for terminals within any cell, any base station / network may also send extended slot configuration information including ML symbols. The extended slot configuration information may be sent via cell-specific radio resource control (RRC) signaling. For example, a cell-specific RRC message, 'tdd-UL-DL-ConfigurationCommon_extended', for extended slot configuration may be defined. Alternatively, the extended slot configuration information may be sent via UE-specific RRC signaling. For example, a UE-specific RRC message, 'tdd-UL-DL-ConfigurationDedicated_extended', for extended slot configuration may be defined. At this time, when the legacy slot configuration is formed by 'tdd-UL-DL-ConfigurationCommon', 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended' may be restricted to follow the setting values ​​of the reference subcarrier spacing (SCS) and the number of slot configuration patterns (one or two) and the slot configuration period of each pattern contained in the corresponding 'tdd-UL-DL-ConfigurationCommon'. That is, it may be restricted to have the same reference SCS value and the same number of patterns and the period of each pattern as the legacy slot configuration.Based on this, the extended slot configuration information through 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended' can be defined as the position information of the symbol including the FDSB set by DL, UL or flexible symbols through the legacy slot configuration and based on any period (for example, the case of setting one pattern, the case of setting p or two patterns, P+P2). In other words, it can be defined as the position information of the symbol re-set by the ML symbol. At this time, the position information of the symbol reset by the ML symbol formed by the extended slot configuration information based on 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended' can be set and transmitted by each pattern of the legacy slot configuration, and is composed of offset information and duration information (i.e., the number of symbols) of the symbol reset by the ML symbol. In this case, for the symbol reset by the corresponding ML symbol, the ML symbol type information can also be defined as being formed by the corresponding 'tdd-UL-DL-ConfigurationCommon_extended'. For example, in the case of a DL symbol reset by the ML symbol, there are two combinations of flexible operation or UL operation in FDSB, so for each symbol reset by the ML symbol in DL, an information area for indicating what type of ML symbol is may be included. As a method for this, the corresponding indication information area is formed in the form of a bitmap of each symbol set by ML, or is formed in the form of duration information of each ML symbol type or duration information of a specific ML symbol type. Alternatively, for the information of the corresponding ML symbol type, it can be separately defined and sent to each terminal through terminal-specific RRC signaling.

[0122] As another way of configuring the ML symbol setting information, the ML symbol is limited to be set from a specific position according to the type of PDSB (i.e., UL FDSB or DL ​​FDSB), and then only the type setting information of the corresponding FDSB and the duration information from the corresponding position are set through the extended slot configuration. For example, in the case of UL FDSB, the last DL symbol, such as the last DL symbol, can be limited through the legacy slot configuration. Figure 8 The composition of the continuous symbols before the last flexible symbol or the first UL symbol shown on the right side can be defined as setting and transmitting only the number information of the continuous ML symbols including the corresponding UL FDSB.

[0123] Fig. 9 Another example of time slot configuration for subband full-duplex communication according to an embodiment of the present specification is shown.

[0124] When only the information including the number of consecutive ML symbols of the above UL FDSB is set and transmitted, as shown in FIG. Fig. 9 As shown, the number of ML symbols 42 can be defined to be set from the symbol domain and sent to the terminal. Alternatively, in the case of the corresponding ML symbol, the number of (DL, UL) ML symbols N (= 35) value and the number of (DL, Flexible) ML symbols M (= 7) value can be defined and sent to the terminal. However, when it is defined to support only a specific FDSB (for example, only UL FDSB), it can be defined that there is no setting information for the FDSB type and only the number information for the ML symbols containing UL FDSB is set according to the above method.

[0125] Meanwhile, in the above description, from the viewpoint of resetting to ML symbols through 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended', a method for setting the position of DL, UL or flexible symbols re-set by the corresponding ML symbols is described, but it can also be defined that the corresponding content is set in the base station with other meanings and interpreted by the terminal. In other words, in order to support subband non-overlapping full-duplex communication (full duplex), it is defined that the corresponding content sets an information area containing DL and flexible symbols of UL FDSB or sets an information area containing UL and flexible symbols of DL FDSB, etc., so that it can be set by the base station and interpreted by the terminal. That is, for symbols set as DL symbols or flexible symbols through legacy slot configuration, the position information of symbols including UL FDSB can be defined as being sent to the terminal by the above method. Alternatively, a separate cell-specific RRC or terminal-specific RRC message may be defined only for FDSB settings, and reconfiguration information for the corresponding ML symbols may be transmitted through it. For example, a cell-specific or terminal-specific RRC message for UL FDSB or DL ​​FDSB settings may be defined, and symbol allocation information may be defined to be transmitted together with frequency resource allocation information for the corresponding UL FDSB or DL ​​FDSB. The corresponding symbol allocation information may follow the above-described method for constituting ML symbol configuration information.

[0126] In addition, a downlink control information format 2_0 or a new UE-group common or UE-specific DCI format may be defined, and a slot format indication including corresponding ML symbols may be defined therethrough. According to an existing slot format indication method based on DCI format 2_0, a base station may construct a slot format combination of each 'slotFormatCombinationId' that may be indicated by a slot format indicator-index (SFI-index) field through RRC signaling, and a slot format table for this purpose is defined as shown in Table 5 below.

[0127] [Table 5]

[0128]

[0129]

[0130] In Table 5, in order to form a slot format including an ML symbol type according to a detailed combination of ML symbols or additional ML symbols by reserved formats 56 to 254, a new extended slot format table may be defined. Based on this, a message area for notifying that a slot format combination is formed for any terminal using a legacy slot configuration table as shown in Table 5, or a slot format combination is formed based on a newly defined extended slot format table, or a new extended slot format combination based on the extended slot format table may be defined to form an RRC message format.

[0131] In the following, according to the method proposed above, the UL sub-band (i.e., UL FDSB) and DL sub-band (i.e., DL FDSB) setting method for supporting SBFD operation in the base station and the terminal is described in detail, especially the time domain resource assignment method for any UL sub-band or DL ​​sub-band.

[0132] In this specification, 'the terminal receives a specific downlink radio channel, signal or information' may include the meaning of 'sending the same downlink radio channel, signal or information from the base station'. Conversely, 'sending a specific uplink radio channel, signal or information from the terminal' may include the meaning of 'receiving the same uplink radio channel, signal or information at the base station'.

[0133] As described above, the terminal may receive UL subband setting information for performing SBFD operation from the base station. At this time, the corresponding UL subband setting information includes time resource setting information of the corresponding UL subband. That is, it may include SBFD symbol (ie, ML symbol) setting information.

[0134] The time resource setting information of the UL subband may include reference SCS information for the corresponding time resource setting and pattern setting information of the corresponding UL subband. At this time, up to N pattern setting information of the UL subband may be included. For example, the corresponding N value may be 2. In addition, the setting information of each pattern may include the period setting information of the corresponding pattern, the number setting information of the SBFD time slots consisting only of SBFD symbols (i.e., consisting only of symbols including the UL subband), the number setting information of the SBFD symbols, and at least one of the time slot or symbol offset information.

[0135] Accordingly, the UL subband is repeatedly set on the time axis according to the number of given patterns and the period information of each pattern, and the starting point (or end point) and duration on the time axis of the UL subband constituting each pattern period can be set according to the offset, SBFD time slot number setting information and / or SBFD symbol number setting information.

[0136] The time resource setting information of the UL subband is set as semi-static by the base station through terminal-specific (UE-specific) or cell-specific (cell-specific) RRC signaling, or can be indicated as dynamic through C media access control (MAC) control element signaling or layer 1 (L1) control signaling.

[0137] At this time, as described above, the time resource setting information of the UL subband, that is, a part of the SBFD time slot / symbol time resource setting information for setting the UL subband, can be determined according to the legacy time slot configuration information. For example, the reference SCS, mode and period setting information for the time resource setting of the UL subband can be defined to follow the reference SCS, mode and period setting information included in the 'tdd-UL-DL-ConfigurationCommon' for the legacy time slot configuration. That is, the mode and period setting information included in the 'tdd-UL-DL-ConfigurationCommon' for the cell-specific UL-DL configuration can be followed, that is, the number of reference SCS and time slot configuration patterns (1 or 2) and the time slot configuration period (slot configuration period, P) of each pattern (or, if there are 2 patterns, P+P2) setting values.

[0138] That is, the reference SCS for the time resource setting of any UL subband can follow the reference SCS value included in the 'tdd-UL-DL-ConfigurationCommon' for the legacy slot configuration. In addition, the time resource setting of the UL subband can be set based on a pattern 1 or two patterns 1 and pattern 2 with a certain period. At this time, whether the UL subband includes a pattern 1 setting or two patterns 1 and pattern 2 settings can be determined based on the number of patterns included in the legacy slot configuration 'tdd-UL-DL-ConfigurationCommon'. In addition, the periodicity information of each pattern of the UL subband, that is, the P value when only one pattern 1 is set, and each P value and P2 value when two patterns 1 and 2 are set, can also follow the periodicity values ​​P and P2 values ​​included in the legacy slot configuration 'tdd-UL-DL-ConfigurationCommon'.

[0139] Therefore, the time resource setting information of any UL subband is only explicitly set for the offset information and duration information of the corresponding UL subband, so that it can be defined as being sent to the terminal through terminal-specific (UE-specific) / cell-specific (cell-specific) RRC signaling or MAC CE signaling, L1 control signaling. Alternatively, the information can also be determined implicitly, and it can be defined that only the duration information is explicitly set and sent to the terminal. At this time, the duration setting information can be defined as in the legacy slot configuration, especially in the DL slot and DL symbol through 'tdd-UL-DL-ConfigurationCommon', or in which a flexible symbol is additionally included to include the SBFD slot of the UL subband, or the number information of the continuous SBFD slots and SBFD symbols transformed or reset to the SBFD symbol, or only the number information of the continuous SBFD symbols. At this time, the offset information of the starting point (or end point) of the UL subband duration (duration) set according to the corresponding continuous (SBFD symbol number + continuous SBFD symbol number) or continuous SBFD symbol number can also be explicitly set as the offset symbol (or slot) value from the starting point of each pattern 1 and pattern 2 as described above, so as to be transmitted to the terminal. At this time, the offset symbol can be the starting point or end point of the corresponding UL subband.

[0140] On the other hand, the offset value may have any fixed value. For example, the UL subband may be defined to have a certain duration at the start of each pattern (e.g., the first symbol of the first DL slot of the legacy slot configuration, through the 'tdd-UL-DL-ConfigurationCommon'). At this time, as described above, the duration information of the corresponding UL subband is set to include the number information of consecutive DL slots and the number information of consecutive DL symbols of the corresponding UL subband, that is, the number of SBFD slots and the number information of SBFD symbols that are transformed / re-set to SBFD slots / symbols by the UL subband setting, or is set to simply the number information of consecutive DL symbols (i.e., the number information of SBFD symbols) and thus transmitted to the terminal. As another method of fixing the offset value, the corresponding fixed offset value is defined as the end point of the UL subband duration, which is defined as the previous symbol of the first UL symbol in each pattern of the legacy slot configuration, or as the last DL symbol. Accordingly, during a duration set according to the number of SBFD time slots and / or the number of SBFD symbols, a corresponding UL subband may set a corresponding offset as an end point.

[0141] In addition, as described above, when the duration of a UL subband is set as a continuous time slot or symbol, in the case of setting / indicating a DL symbol for transmission of a synchronization signal block (SSB), it is defined as being excluded from the corresponding continuous time slot or symbol count, or the base station sets the corresponding exclusion through cell-specific / UE-specific RRC signaling, or is defined as being indicated through UE-specific or group-common DCI.

[0142] <Order of Examples of This Specification>

[0143] Fig.10 The following describes an operation method of a terminal according to an embodiment of the present specification.

[0144] Reference Fig.10, the terminal receives subband setting information for full duplex communication (full duplex) from the base station (S1001). The subband setting information can be received through upper layer signaling and can be set to semi-static. The upper layer signaling can be terminal-specific (UE-specific) RRC signaling or cell-specific RRC signaling. On the other hand, the subband setting information can be set to dynamic through MAC CE signaling or L1 control signaling.

[0145] Thereafter, downlink reception or uplink transmission is performed by a subband based on the received subband setting information (S1002). The subband setting information includes time axis resource setting information, and the time axis resource setting information includes reference subcarrier spacing (SCS) setting information and at least one mode setting information, and each mode setting information of the at least one mode setting information may include period information.

[0146] Reference subcarrier spacing (SCS) setting information, the number of at least one mode setting information, and the periodicity information of each mode setting information can be determined based on a time division duplex (TDD) uplink-downlink configuration common (tdd-UL-DL-ConfigurationCommon) information element (IE). Preferably, the reference SCS setting information, the number of mode setting information (or the number of modes), and the periodicity setting information of each mode included in the 'tdd-UL-DL-ConfigurationCommon' IE can be respectively determined.

[0147] Each of the at least one mode setting information further includes offset information, and the offset information may indicate a start point or an end point of a sub-frequency band.

[0148] As another example, the start or end point of the sub-band can be fixed by a specific symbol of each pattern. In this case, the specific symbol can be one of the symbols before the first symbol, the first downlink symbol, the last downlink symbol, and the first uplink symbol of the pattern.

[0149] Each mode setting information of the at least one mode setting information further includes duration information, and can be based on the number of subband full duplex (SBFD) time slots and / or the number of SBFD symbols. The duration information can be set in addition to the symbols of the synchronization signal block (SSB). To this end, information indicating whether to exclude the symbols of the synchronization signal block (SSB) can be received from the base station.

[0150] Fig.11 The following describes an operation method of a base station according to an embodiment of the present specification.

[0151] Reference Fig.11 , the base station sends subband setting information for full duplex communication to the terminal (S1101). Here, the subband setting information can be sent through upper layer signaling and can be set to semi-static. The upper layer signaling can be terminal-specific (UE-specific) RRC signaling or cell-specific (cell-specific) RRC signaling. On the other hand, the subband setting information can be set to dynamic through MAC CE signaling or L1 control signaling.

[0152] Reference subcarrier spacing (SCS) setting information, the number of at least one mode setting information, and the periodicity information of each mode setting information can be determined based on a time division duplex (TDD) uplink-downlink configuration common (tdd-UL-DL-ConfigurationCommon) information element (IE). Preferably, the reference SCS setting information, the number of mode setting information (or the number of modes), and the periodicity setting information of each mode included in the 'tdd-UL-DL-ConfigurationCommon' IE can be respectively determined.

[0153] Each of the at least one mode setting information further includes offset information, and the offset information may indicate a start point or an end point of a sub-frequency band.

[0154] As another example, the start or end point of the sub-band can be fixed by a specific symbol of each pattern. In this case, the specific symbol can be one of the symbols before the first symbol, the first downlink symbol, the last downlink symbol, and the first uplink symbol of the pattern.

[0155] Each mode setting information of the at least one mode setting information further includes duration information, and can be based on the number of subband full duplex (SBFD) time slots and / or the number of SBFD symbols. The duration information can be set in addition to the symbols of the synchronization signal block (SSB). To this end, information indicating whether to exclude the symbols of the synchronization signal block (SSB) can be received from the base station.

[0156] <Overview of Apparatus to Which This Specification Can Be Disclosed>

[0157] The disclosure of the present specification described above can be implemented by various means. For example, the disclosure of the present specification can be implemented by hardware, firmware, software or a combination thereof. The disclosure will be described in detail with reference to the accompanying drawings.

[0158] Fig.12 A device according to an embodiment of the present specification is shown.

[0159] Reference Fig.12 , a wireless communication system may include a first device 100a and a second device 100b.

[0160] The first device 100a can be a base station, a network node, a transmission terminal, a receiving terminal, a wireless device, a wireless communication device, a vehicle, a vehicle equipped with an autonomous driving function, a smart car (Connected Car), an unmanned aerial vehicle (UAV), an AI (Artificial Intelligence) module, a robot, an AR (Augmented Reality) device, a VR (Virtual Reality) device, an MR (Mixed Reality) device, a holographic device, a public safety device, an MTC device, an IoT device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, a 5G service-related device or other devices related to the fourth industrial revolution.

[0161] The second device 100b can be a base station, a network node, a transmission terminal, a receiving terminal, a wireless device, a wireless communication device, a vehicle, a vehicle equipped with an autonomous driving function, a smart car (Connected Car), an unmanned aerial vehicle (UAV), an AI (Artificial Intelligence) module, a robot, an AR (Augmented Reality) device, a VR (Virtual Reality) device, an MR (Mixed Reality) device, a holographic device, a public safety device, an MTC device, an IoT device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, a 5G service-related device or other devices related to the fourth industrial revolution.

[0162] The first device 100a may include: at least one processor such as a processor 1020a, at least one memory such as a memory 1010a, and at least one transceiver such as a transceiver 1031a. The processor 1020a may perform the aforementioned functions, steps and / or methods. The processor 1020a may execute one or more protocols. For example, the processor 1020a may execute one or more layers of a wireless interface protocol. The memory 1010a may be connected to the processor 1020a and store information and / or instructions in various forms. The transceiver 1031a may be connected to the processor 1020a and control the transmission and reception of wireless signals.

[0163] The second device 100b may include at least one processor such as a processor 1020b, at least one memory device such as a memory 1010b, and at least one transceiver such as a 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 information and / or instructions in various forms. The transceiver 1031b may be connected to the processor 1020b and control the transmission and reception of wireless signals.

[0164] The memory 1010a and / or the memory 1010b may be connected to the inside or outside of the processor 1020a and / or the processor 1020b, respectively, or may be connected to other processors via various technologies such as wired or wireless connections.

[0165] The first device 100a and / or the second device 100b may have more than one antenna. For example, the antenna 1036a and / or the antenna 1036b may be configured to receive and transmit wireless signals.

[0166] Fig.13 A block diagram showing the structure of a terminal according to an embodiment of the present specification.

[0167] in particular Fig.13 The foregoing is shown in more detail Fig.12 Figure 1.

[0168] The device includes a memory 1010, a processor 1020, a transceiver 1031, a power management module 1091, 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.

[0169] The processor 1020 may be configured to implement the functions, steps and / or methods described and proposed in this specification. The layers of the radio interface protocol may be implemented in the processor 1020. The processor 1020 may include an ASIC (application-specific integrated circuit), other chipsets, logic circuits and / or data processing devices. The processor 1020 may be an AP (application processor). The processor 1020 may include at least one of a DSP (digital signal processor), a CPU (central processing unit), a GPU (graphics processing unit), and a modem (Modem: modulator and demodulator). The processor 1020 may be, for example, SNAPDRAGONTM series processors manufactured by EXYNOSTM series processors manufactured by A series processors manufactured by HELIOTM series processors manufactured by ATOMTM series processors manufactured by KIRINTM series processors or corresponding new generation processors manufactured by.

[0170] The power management module 1091 manages the power of the processor 1020 and / or the transceiver 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 input to be used by the processor 1020. The input unit 1053 can be displayed on the display device 1041. The SIM card is an integrated circuit used to identify and authenticate the IMSI (international mobile subscriber identity) of the network user in mobile devices such as mobile phones and computers, and to securely store keys related thereto. Phonebook information can also be stored in many SIM cards.

[0171] The memory 1010 is operably combined with the processor 1020 to store various information for operating the processor 610. The memory 1010 may include ROM (read-only memory), RAM (random access memory), flash memory, memory card, storage medium and / or other storage devices. When the embodiment is implemented in software, the technology described in this specification can be implemented in modules (e.g., steps, functions, etc.) that perform the functions described in this specification. The module can be stored in the memory 1010 and run by the processor 1020. The memory 1010 can be implemented inside the processor 1020. Alternatively, the memory 1010 can be implemented outside the processor 1020 and can be communicatively connected to the processor 1020 by various means known in the art.

[0172] The transceiver 1031 is operably combined with the processor 1020 to send and / or receive wireless signals. The transceiver 1031 includes a transmitter and a receiver. The transceiver 1031 may include a baseband circuit for processing radio frequency signals. The transceiver controls more than one wire to send and / or receive wireless signals. In order to start communication, the processor 1020 sends instruction information to the transceiver 1031 to transmit, for example, wireless signals constituting voice communication data. The antenna performs the function of sending and receiving wireless signals. When receiving wireless signals, the transceiver 1031 can send signals and convert the signals into baseband for processing by the processor 1020. The processed signals can be converted into auditory or visual information output through the speaker 1042.

[0173] The speaker 1042 outputs the sound related results processed by the processor 1020. The microphone 1052 receives the sound related input to be used by the processor 1020.

[0174] The user inputs command information such as a phone number by, for example, pressing a button (or touching) of the input unit 1053 or by voice activation based on the microphone 1052. The processor 1020 processes the received command information to execute appropriate functions such as dialing the phone number. Operational data may be extracted from the SIM card or the memory 1010. In addition, the processor 1020 may display the command information or the operation information on the display device 1041 so that the user can recognize it and provide convenience.

[0175] Fig.14 A block diagram showing the structure of a processor that implements the disclosure of this specification.

[0176] Reference Fig.14 It is known that the processor 1020 implementing the disclosure of this specification may include multiple circuits (circuitry) 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. In addition, although not shown, the processor 1020 may include more circuits. Each circuit may include multiple transistors.

[0177] 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), and a GPU (graphics processing unit).

[0178] Fig.15 To show in detail Fig.12 The first device of the transceiver or Fig.13 Block diagram of the receiving and transmitting part of the device shown.

[0179] Reference Fig.15The transceiver 1031 includes a transmitter 1031-1 and a receiver 1031-2. The transmitter 1031-1 includes a DFT (Discrete Fourier Transform) 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. In addition, for example, a scramble unit (not shown), a modulation mapper (not shown), a layer mapper (not shown), and a layer permutator (not shown) may also be included, which may be configured before the DFT unit 1031-11. That is, in order to prevent the increase of PAPR (peak-to-average power ratio), the transmitter 1031-1 first passes the information through DFT 1031-11 before mapping the signal to the subcarrier. The signal spread (or synonymously precoded) by the DFT unit 1031-11 is subjected to subcarrier mapping by the subcarrier mapper 1031-12, and then passes through the IFFT (Inverse Fast Fourier Transform) unit 1031-13 to form a signal on the time axis.

[0180] The DFT unit 1031-11 performs DFT on the input symbols to output complex symbols. For example, if Ntx symbols are input (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 each subcarrier 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 can perform 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 front 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.

[0181] On the other hand, the receiver 1031-2 includes a wireless receiving unit 1031-21, a CP removing unit 1031-22, an FFT unit 1031-23, and an equalizing unit 1031-24. The wireless receiving unit 1031-21, the CP removing unit 1031-22, and the FFT unit 1031-23 of the receiver 1031-2 perform the opposite functions of the wireless transmitting unit 1031-15, the CP inserting unit 1031-14, and the IFF unit 1031-13 in the transmitting end 1031-1. The receiver 1031-2 may also include a demodulator.

[0182] The preferred embodiments are described above by way of example, but the disclosure of this specification is not limited to these specific embodiments, and thus the present invention may be modified, altered or improved into various forms within the scope of the concept of this specification and the claims.

[0183] In the above exemplary system, the method is described as a series of steps or boxes based on the flowchart, but is not limited to the order of the steps described, and some steps can be performed in an order different from the described order or simultaneously. In addition, those skilled in the art can understand that the steps shown in the flowchart are not exclusive, and other steps can be included or one or more steps in the flowchart can be deleted without affecting the scope of the rights.

[0184] The claims recorded in this specification can be combined in many ways. For example, the technical features of the method claims recorded in this specification can be combined and implemented by a device, and the technical features of the device claims in this specification can be combined and implemented by a method. In addition, the technical features of the method claims in this specification and the technical features of the device claims can be combined and implemented by a device, and the technical features of the method claims in this specification and the technical features of the device claims can be combined and implemented by a method.

Claims

1. A method for a terminal to perform downlink reception and / or uplink transmission in a wireless communication system, wherein: The method comprises: The step of receiving sub-band setting information for full-duplex communication; and performing downlink reception or uplink transmission by setting the sub-band based on the received sub-band information, The sub-band setting information includes time axis resource setting information. The time axis resource setting information includes reference subcarrier interval setting information and at least one mode setting information, Each of the at least one mode setting information includes period information.

2. The method according to claim 1, wherein: The reference subcarrier spacing setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are determined based on information corresponding to an uplink-downlink setting common information element included in time division duplex communication.

3. The method according to claim 1, wherein: Each of the at least one mode setting information further includes offset information indicating a start point or an end point of the sub-frequency band.

4. The method according to claim 1, wherein: The start or end point of the sub-band is fixed by a specific symbol for each mode.

5. The method according to claim 4, wherein: The specific symbol is one of a first symbol, a first downlink symbol, a last downlink symbol, and a symbol before a first uplink symbol of the pattern.

6. The method according to claim 1, wherein: Each of the at least one mode setting information further includes duration information and is based on the number of sub-band full-duplex communication time slots and / or the number of sub-band full-duplex communication symbols.

7. The method according to claim 6, wherein: The duration information is set in addition to the symbols of the synchronization signal block.

8. The method according to claim 6, further comprising: In the duration information, a step of receiving information indicating whether to exclude symbols of a synchronization signal block.

9. A method for a base station to perform downlink transmission and / or uplink reception in a wireless communication system, wherein: The method comprises: transmitting sub-band setting information for full-duplex communication; and a step of performing downlink transmission or uplink reception by using a sub-band based on the sub-band setting information of the transmission, The sub-band setting information includes time axis resource setting information. The time axis resource setting information includes reference subcarrier interval setting information and at least one mode setting information, Each of the at least one mode setting information includes period information.

10. The method according to claim 9, wherein: The reference subcarrier spacing setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are determined based on information corresponding to an uplink-downlink setting common information element included in time division duplex communication.

11. The method according to claim 9, wherein: Each of the at least one mode setting information further includes offset information indicating a start point or an end point of the sub-frequency band.

12. The method according to claim 9, wherein: The start or end point of the sub-band is fixed by a specific symbol for each mode.

13. The method according to claim 12, wherein: The specific symbol is one of a first symbol, a first downlink symbol, a last downlink symbol, and a symbol before a first uplink symbol of the pattern.

14. The method according to claim 9, wherein: Each of the at least one mode setting information further includes duration information and is based on the number of sub-band full-duplex communication time slots and / or the number of sub-band full-duplex communication symbols.

15. The method according to claim 14, wherein: The duration information is set in addition to the symbols of the synchronization signal block.

16. The method according to claim 14, wherein: In the duration information, a step of receiving information indicating whether to exclude symbols of a synchronization signal block.

17. A communication device in a wireless communication system, wherein: The communication device comprises: at least one processor; and at least one memory for storing instructions and operatively connected to the at least one processor, Wherein, based on the instruction being executed by the at least one processor, the operations performed include: a step of receiving sub-band setting information for full-duplex communication; and performing a step of downlink reception or uplink transmission by setting the sub-band based on the received sub-band information, The sub-band setting information includes time axis resource setting information. The time axis resource setting information includes reference subcarrier interval setting information and at least one mode setting information, Each of the at least one mode setting information includes period information.

18. The communication device according to claim 17, wherein: The reference subcarrier spacing setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are determined based on information corresponding to an uplink-downlink setting common information element included in time division duplex communication.

19. The communication device according to claim 17, wherein: Each of the at least one mode setting information further includes offset information indicating a start point or an end point of the sub-frequency band.

20. The communication device according to claim 17, wherein: The start or end point of the sub-band is fixed by a specific symbol for each mode.

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