Frame structure configuration method and device for full-duplex communication

Abstract

The present invention provides a method and apparatus for performing downlink transmission and reception and uplink transmission and reception in a wireless communication system. A base station transmits, to a terminal, sub-band configuration information for full duplex communication (full duplex). The terminal performs downlink reception or uplink transmission through a sub-band based on the received sub-band configuration information, but the sub-band configuration information includes sub-band frequency resource allocation information, and a position of the frequency resource allocation information of the sub-band is based on a common resource block (CRB).

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 the present specification is to provide a method and apparatus for a base station and a terminal to perform downlink transmission and reception and / or uplink transmission and 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 configuration information for full-duplex communication (full duplex), and performs downlink reception or uplink transmission through a subband based on the received subband configuration information, but the subband configuration information includes subband frequency resource allocation information, and the location of the frequency resources of the subband is based on a common resource block (CRB).

[0008] In addition, an embodiment of the present invention provides a method, in which, in a wireless communication system, a base station transmits subband configuration information for full-duplex communication (full duplex), and performs downlink transmission or uplink reception through a subband based on the transmitted subband configuration information, but the subband configuration information includes subband frequency resource allocation information, and the location of the frequency resources of the subband is based on a common resource block (CRB).

[0009] In addition, an embodiment of the present invention provides a communication device, which includes: at least one processor; and at least one memory for storing instructions in a wireless communication system, and is operably electrically connected to the at least one processor, and is executed by the at least one processor based on the instructions, and the operations performed include: a step of receiving subband configuration information for full-duplex communication, and a step of performing downlink reception or uplink transmission by a subband based on the received subband configuration information, the subband configuration information includes subband frequency resource allocation information, and the location of the frequency resources of the subband is based on a common resource block (CRB).

[0010] In addition, an embodiment of the present invention provides a base station, which includes: at least one processor; and at least one memory for storing instructions in a wireless communication system, and is operably electrically connected to the at least one processor, and is executed by the at least one processor based on the instructions, and the operations performed include: the step of transmitting subband configuration information for full-duplex communication, and the step of performing downlink transmission or uplink reception by a subband based on the received subband configuration information, the subband configuration information includes subband frequency resource allocation information, and the location of the frequency resources of the subband is based on a common resource block (CRB).

[0011] The sub-band is configured in association with only a single downlink bandwidth part (BWP) or only a single uplink bandwidth part (BWP). In addition, the sub-band configuration information may be received via high-layer signaling.

[0012] The sub-band frequency resource allocation information may be configured based on a carrier bandwidth based on a specific subcarrier spacing.

[0013] The sub-band is configured in association with a single downlink bandwidth part (BWP) and / or a single uplink bandwidth part, and the single downlink bandwidth part (BWP) and the single uplink bandwidth part can be configured as a BWP pair having the same BWP ID.

[0014] A guard band consisting of resource blocks is configured at the upper end and / or lower end adjacent to the sub-band in the frequency domain, and the size of the guard band is determined by at least one subcarrier spacing (subcarrier spacing) in the carrier bandwidth, the uplink broadband part and the downlink bandwidth part.

[0015] The sub-band configuration information further includes sub-band identification information, and the sub-band identification information may be a sub-band identity (ID) or a sub-band index (index).

[0016] Beneficial Effects

[0017] According to the disclosure of the present specification, downlink transmission and reception and / or uplink transmission and reception can be efficiently performed through a subband for full duplex communication in a wireless communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A diagram illustrating a wireless communication system.

[0019] Figure 2 The structure of the radio frame used by NR is shown.

[0020] Figure 3a to Figure 3c An exemplary diagram illustrating an exemplary architecture for wireless communication services.

[0021] Figure 4 Shows the time slot structure of the NR frame.

[0022] Figure 5 Examples of subframe types in NR are shown.

[0023] Figure 6 The structure of a self-contained time slot is shown.

[0024] Figure 7 A diagram illustrating the bandwidth portions used in NR is shown.

[0025] Figure 8 A diagram illustrating resource allocation for the wideband part used in NR is shown.

[0026] Figure 9a to Figure 9b is a schematic example showing subband full duplex (SBFD) communication.

[0027] Figure 10a to Figure 10b An example of a time slot configuration of subband full duplex (SBFD) communication according to the disclosure of this specification is shown.

[0028] Fig.11 An example of configuring sub-bands within a wideband part according to the disclosure of this specification is shown.

[0029] Figures 12a to 12b An example of configuring sub-bands within a carrier wideband according to the disclosure of this specification is shown.

[0030] Fig.13 The following describes an operation method of a terminal according to an embodiment of the present specification.

[0031] Fig.14 The following describes an operation method of a base station according to an embodiment of the present specification.

[0032] Fig.15 A device according to an embodiment of the present specification is shown.

[0033] Fig.16 A block diagram showing the structure of a terminal according to an embodiment of the present specification.

[0034] Fig.17 A block diagram showing the structure of a processor that implements the disclosure of this specification.

[0035] Fig.18 To show in detail Fig.15 The transceiver of the first device or Fig.16 Block diagram of the transceiver portion of the device shown. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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".

[0042] 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".

[0043] 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”.

[0044] 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”.

[0045] 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".

[0046] In this specification, the technical features described separately in one drawing can be implemented independently or simultaneously.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] <Wireless Communication System>

[0052] 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.

[0053] 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".

[0054] 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).

[0055] 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.

[0056] 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.

[0057] 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).

[0058] [Table 1]

[0059] Frequency range specification Corresponding frequency range Subcarrier spacing FR1 410MHz–7125MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0060] 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).

[0061] 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), the physical broadcast channel (PBCH), the physical multicast channel (PMCH), the physical control format indicator channel (PCFICH), the physical downlink control channel (PDCCH), and the physical hybrid ARQ indicator channel (PHICH) are defined as downlink physical channels, and the reference signal and the synchronization signal are defined as downlink physical signals. Reference signal (RS), also known as pilot, refers to a signal with 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 upper layers and uplink physical signals corresponding to resource elements used by the physical layer but do not carry information from upper layers. 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.

[0062] 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.

[0063] Figure 1 A diagram illustrating a wireless communication system.

[0064] 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).

[0065] 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).

[0066] 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.

[0067] 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.

[0068] 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.

[0069] Figure 2 The structure of the radio frame used by NR is shown.

[0070] In NR, uplink and downlink transmissions consist of frames. A radio frame has a length of 10ms and is defined as two 5ms half-frames (HF). A half-frame is defined as five 1ms subframes (SF). A subframe is divided into one or more time slots, and the number of time slots in a subframe depends on the SCS (Subcarrier Spacing). Each time slot includes 1 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 1 or 2 symbols. Among them, the symbol may include an OFDM symbol (or CP-OFDM symbol), a SC-FDMA symbol (or a DFT-s-OFDM symbol).

[0071] <Support for various parameter sets (numerology)>

[0072] 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.

[0073] 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.

[0074] [Table 2]

[0075]

[0076]

[0077] For a normal 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) is shown in the following table. 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.

[0078] [Table 3]

[0079]

[0080] 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.

[0081] [Table 4]

[0082]

[0083]

[0084] In the NR system, OFDM(A) parameter sets (numerology) (e.g., SCS, CP length, etc.) can be configured differently between multiple cells combined 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 configured differently between the combined cells.

[0085] Figure 3a to Figure 3c is an example diagram illustrating an exemplary architecture for wireless communication services.

[0086] Reference Figure 3a , the UE is connected to the LTE / LTE-A based cell and the NR based cell in DC (dual connectivity) mode.

[0087] The NR-based cell is connected to the core network used for the original fourth-generation mobile communication, namely EPC (Evolved Packet Core).

[0088] 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.

[0089] Will be based on Figure 3a and Figure 3b The service mode of the architecture shown is called NSA (non-standalone).

[0090] Reference Figure 3c , UE is only connected to the NR-based cell. The service mode based on this architecture is called SA (standalone).

[0091] 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, one carrier may include a downlink frequency band and an uplink frequency band that are paired with each other.

[0092] Figure 4 Shows the time slot structure of the NR frame.

[0093] A slot includes multiple symbols in the time domain. For example, for a normal CP, a slot includes 14 symbols, while 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.

[0094] Figure 5 Examples of subframe types in NR are shown.

[0095] Figure 5 The TTI (transmission time interval) shown may be referred to as a subframe or time slot for NR (or new RAT). Figure 5The 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).

[0096] This subframe (or time slot) structure may be referred to as a self-contained subframe (or time slot).

[0097] 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.

[0098] 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 converting from DL to UL can be configured as a guard period (GP).

[0099] Figure 6 The structure of a self-contained time slot is shown.

[0100] 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.

[0101] 1.DL only configuration

[0102] 2.UL only configuration

[0103] 3. Mixed UL-DL Configuration

[0104] -DL area + GP (Guard Period) + UL control area

[0105] -DL control area + GP + UL area

[0106] DL area: (i) DL data area, (ii) DL control area + DL data area

[0107] UL area: (i) UL data area, (ii) UL data area + UL control area

[0108] 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 converting the base station and the terminal 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 converting from DL to UL can be configured as GP.

[0109] Figure 7 A diagram illustrating the bandwidth portions used in NR is shown.

[0110] In New Radio (NR), the maximum carrier bandwidth for each subcarrier spacing is configured to be 50 MHz to 400 MHz, unlike LTE, where the carrier bandwidth is fixed at 20 MHz. Therefore, it is not assumed that all terminals use these carrier bandwidths. Figure 7 As shown, in NR, a broadband part (BWP) is specified within the carrier broadband and the terminal is used. In addition, the broadband part is connected to a parameter set and consists of a subset of continuous common resource blocks, and can be dynamically activated over time. Up to four broadband parts are configured in the terminal for uplink and downlink, and data is sent and received using the activated broadband part at a given time.

[0111] In the case of paired spectrum, the uplink and downlink wideband portions are configured independently, and in the case of unpaired spectrum, in order to prevent unnecessary frequency re-tuning between downlink and uplink operations, the downlink and uplink wideband portions are configured in pairs so as to share the center frequency.

[0112] Figure 8 A diagram illustrating resource allocation for the wideband part used in NR is shown.

[0113] In New Radio (NR), the carrier bandwidth is numbered by common resource blocks (CRBs). And the bandwidth part (BWP) configured within the carrier bandwidth is numbered by physical resource blocks (PRBs). Therefore, the broadband part is numbered by consecutive PRBs within the CRB, thereby forming a resource allocation.

[0114] Since resource allocation is based on the broadband part, it is necessary to know the location of the broadband part within the carrier broadband. For this purpose, a reference point is configured, which is called Point A. Point A is generally configured as the starting point of the carrier broadband, that is, CRB#0, but can also be configured outside the carrier broadband.

[0115] In summary, PRBs are numbered from the starting point of the broadband part, and CRBs are numbered from point A.

[0116] <Disclosure of this specification>

[0117] 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 wireless resources are divided into downlink time slots and uplink time slots for use. Usually, downlink time slots are distributed as more ratios 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.

[0118] 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.

[0119] 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.

[0120] Figure 9a to Figure 9b is a schematic example showing subband full duplex (SBFD) communication.

[0121] In a wireless communication system using OFDM, a duplex communication method called subband full duplex (SBFD) can be used. In SBFD, a portion of the time-frequency resources on a given carrier is used for the downlink, and a portion of the time-frequency resources on the same carrier is used for the uplink. Specifically, downlink resources and uplink resources are distinguished from each other in the frequency domain and used for transmission and reception.

[0122] Figure 9a 9B show examples of SBFD, but in the frequency domain Figure 9a An example is shown in which an uplink sub-band is located between downlink sub-bands, Figure 9b 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.

[0123] 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).

[0124] 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 RRC signaling), 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 common PDCCH). For this reason, NR also supports a dynamic (dynamic) form of time slot format (slot format) indication method through DCI format 2_0.

[0125] However, the UL-DL slot configuration performed by the above method does not support the UL-DL slot configuration in sub-band units in any cell, and the UL-DL configuration configured for any terminal is equally applicable to all BWPs (Bandwidth Parts) configured for the corresponding terminal.

[0126] Therefore, in this specification, a UL-DL slot configuration method in a sub-band unit and a UL-DL slot configuration method according to a BWP of a terminal are proposed in a base station.

[0127] Figure 10a to Figure 10b An example of a time slot configuration of subband full duplex (SBFD) communication according to the disclosure of this specification is shown.

[0128] Figure 10a to Figure 10b An example of a partial SBFD is shown. Fig.10a The uplink may be partially enabled within a downlink time slot / symbol as shown, or as Figure 9b As shown, the downlink may be partially enabled within the uplink time slot / symbol.

[0129] I. First disclosure: a scheme for a sub-band configuration method for UL-DL configuration

[0130] In any base station / cell / spectrum, a separate UL-DL configuration is performed according to the sub-band. That is, it can be defined as dividing the frequency band of any cell or the frequency band of the unpaired spectrum into one or more sub-bands, and performing a separate UL-DL configuration according to each sub-band. As a method for this, it can be defined as transmitting sub-band composition information for UL-DL configuration to the terminal through higher layer signaling at the base station. The corresponding sub-band composition information may include a sub-band ID (or index) for distinguishing sub-bands and frequency allocation information constituting the corresponding sub-band. The frequency allocation information may be composed of common resource block (CRB) allocation information, and bitmap allocation information of CRB or CRB group units constituting the corresponding cell / spectrum, or information of starting CRB index and number of CRBs, or frequency domain resource allocation (FDRA) information based on CRB. FDRA refers to the scheme of DCI format 0 or 1 for frequency resource allocation of PDSCH / PUSCH.

[0131] When the sub-band for UL-DL configuration is configured by the above method or other methods, the sub-band information may be included as the cell-specific RRC message 'tdd-UL-DL-ConfigurationCommon' for UL-DL configuration and / or as the terminal-specific RRC message 'tdd-UL-DL-ConfigurationDedicated'. Specifically, it may be composed of sub-band ID information and UL-DL configuration information in the corresponding sub-band. Or it may be defined as directly including sub-band allocation information (i.e., frequency allocation information for the above-mentioned sub-band configuration) in the 'tdd-UL-DL-ConfigurationCommon' and 'tdd-UL-DL-ConfigurationDedicated' messages.

[0132] In addition, when the DCI format 2_0 information includes sub-band ID information, or constitutes an SFI-index field of a slot format indication (SFI) of any cell / spectrum, a separate SFI-index field can be constituted according to each sub-band, and for this purpose, the composition information used for the slot format indication by the DCI format 2_0 according to the sub-band of any cell / spectrum can be transmitted to the terminal through a higher layer signaling. That is, when any terminal is configured to monitor the DCI format 2_0, the sub-band ID information of the corresponding cell, the positionInDCI information based thereon, the slotFormatCombinationID information, and all or part of the reference subcarrier spacing information can be allocated according to the corresponding sub-band together with the cell ID information.

[0133] II. Second disclosure: Scheme for UL-DL configuration method for each BWP

[0134] A separate UL-DL configuration may be applicable to each BWP configured for any terminal. That is, when a maximum of four BWPs are configured for any terminal, it may be defined that the UL-DL configuration is formed independently for each BWP. In this case, the terminal may determine the slot format based on the UL-DL configuration information of the DL BWP and UL BWP activated for DL ​​reception or UL transmission.

[0135] Specifically, as described above, the base station can configure a sub-band for UL-DL configuration for any cell, and can form a UL-DL configuration separately for each sub-band. At this time, the terminal in the corresponding cell can be defined as any DL BWP and UL BWP configured for the corresponding terminal, following the UL-DL configuration of the sub-band to which the corresponding BWP belongs. In this case, when the base station configures DL BWP and UL BWP for any terminal, it can restrict a DL BWP or ULBWP from being configured to belong to multiple sub-bands. That is, a DL BWP or UL BWP can be defined as belonging to only one sub-band.

[0136] As another method, when configuring the DL BWP or UL BWP for any terminal, it can be defined as including the UL-DL configuration information to be applied to the corresponding BWP. That is, the base station can include the UL-DL configuration information to be applied when the corresponding BWP is activated (activation) in the BWP configuration information for any terminal. Alternatively, when transmitting the 'tdd-UL-DL-ConfigurationDedicated' configuration information, it can be defined as the BWP configured according to the corresponding terminal and transmit the corresponding UL-DL configuration related information.

[0137] Fig.11 An example of configuring sub-bands within a wideband part according to the disclosure of this specification is shown.

[0138] Reference Fig.11 , a sub-band may be configured in a broadband part (BWP) for a terminal. A broadband part (BWP) may be a downlink (DL) BWP or an uplink (UL) BWP. Also, a sub-band configured in a broadband part (BWP) may be a downlink (DL) sub-band or an uplink (UL) sub-band. In addition, it may be configured to belong to only one sub-band in one broadband part (BWP). That is, one broadband part (BWP) may belong to only one sub-band.

[0139] The sub-bands configured in association with the wideband part (BWP) may be numbered by physical resource blocks (PRBs). In addition, the sub-bands configured in association with the wideband part (BWP) may be composed of consecutive PRBs, and the starting point of the sub-band may be determined based on point A. For example, point A may be CRB#0 and may be located outside the carrier broadband.

[0140] As another method, the starting point of the subband configured in the wideband part (BWP) can be defined as an offset based on the starting point of the wideband part (BWP). The offset in this case can be the value of the difference between the starting PRB number of the wideband part (BWP) and the starting PBR number of the subband configured in the wideband part (BWP).

[0141] Figures 12a to 12b An example of configuring sub-bands within a carrier wideband according to the disclosure of this specification is shown.

[0142] Reference Figure 12a to Figure 12b , a subband can be configured within a carrier broadband constituting any cell or within a carrier broadband based on any subcarrier spacing (SCS). Furthermore, the subband configured within the carrier broadband may be a downlink (DL) subband or an uplink (UL) subband. The base station may configure only one subband within any carrier broadband through explicit signaling (e.g., upper layer signaling). For example, the base station may transmit an uplink subband configuration information to the terminal through terminal-specific (UE-specific) or cell-specific (cell-specific) RRC signaling. The uplink subband configuration through the high-level signaling includes continuous frequency resource allocation information. The continuous frequency resource allocation information for uplink subband configuration may be composed of frequency offset information and bandwidth information. The frequency offset information may be configured based on point A (i.e., the center frequency of subcarrier #0 of CRB #0), or based on the offsetToCarrier information of the carrier band (i.e., the starting point of the corresponding carrier broadband configured according to the corresponding SCS-specific carrier). The bandwidth information may be configured in CRB or PRB units configured according to an SCS value of a carrier frequency band configuring a corresponding sub-frequency band.

[0143] As another method, the continuous frequency resource allocation information can be locationAndBandwidth configuration information. The corresponding locationAndBandwidth configuration information, as the frequency position and bandwidth configuration information of the corresponding uplink sub-band, can be configured and interpreted as a resource indicator value (RIV) based on BWP size = 275. At this time, the first PRB of the corresponding uplink sub-band can be determined by the SCS of the DL BWP or UL BWP associated or linked to the corresponding uplink sub-band and the offsetToCarrier of the carrier frequency bandwidth configuration information included in the corresponding SCS.

[0144] When any uplink sub-band is configured by the upper layer signaling, the remaining frequency domain of the corresponding carrier frequency band is calculated according to Fig.12a or Figure 12b , two downlink sub-bands and two guard bands are derived respectively, or one downlink sub-band and one guard band are derived. That is, when the configuration of an uplink sub-band is explicitly formed by the base station, one or two guard bands are formed by the continuous frequency resource blocks adjacent to the uplink sub-band configured by the remaining frequency resources of the corresponding carrier broadband, and one or two downlink sub-bands can be formed by the remaining continuous frequency resource blocks except for the configured uplink sub-band and the guard band. At this time, the size of the guard band, that is, the number of resource blocks constituting the guard band, can be determined by the SCS of the carrier forming the corresponding uplink sub-band configuration or the SCS of the uplink broadband part or the downlink broadband part of the connection / link thereunder. That is to say, a table for determining the size of the guard band according to the sub-band configuration can be defined according to the SCS supported by the zaiNR.

[0145] Any terminal has a link / connection relationship (linkage or association) with only one uplink broadband part and downlink broadband part pair (DL BWP and ULBWP pair with the same BWP ID in an unpaired spectrum) for an uplink sub-band or downlink sub-band configured by high-level signaling. An uplink broadband part and a downlink broadband part having a link / connection relationship with any uplink sub-band configuration or a downlink sub-band therefrom can be configured by the base station through high-level signaling, specifically, the BWP-ID of the uplink broadband part and the downlink broadband part having a corresponding link / connection relationship can be configured.

[0146] For the case of forming a downlink sub-band configuration within a carrier broadband, the same method as the above-mentioned uplink sub-band configuration can also be applied and is included in the disclosure of this specification.

[0147] In addition, although the present invention is described based on the 3GPP NR system, the same content can also be applied to other RATs, for example, to subsequent mobile communication systems such as 6G, 7G, etc.

[0148] The methods provided in this specification can be applied independently or in any combination. In addition, when there are new terms in the terms used in this specification, any name that is easy to understand its meaning is used, and even when other terms with the same meaning are actually used, they can be applied to this specification.

[0149] <Order of Examples of This Specification>

[0150] Fig.13 The following describes an operation method of a terminal according to an embodiment of the present specification.

[0151] Reference Fig.13 S1201: The terminal receives subband configuration information for full duplex communication from the base station. The subband configuration information may be received through high-layer signaling and may be configured semi-statically.

[0152] Thereafter, S1202: performing downlink reception or uplink transmission through a sub-band based on the received sub-band configuration information, but the sub-band configuration information includes sub-band frequency resource allocation information, and the location of the frequency resource of the sub-band can be based on a common resource block (CRB). The common resource block is a resource block based on the corresponding SCS and taking the point A as the lowest subcarrier of CRB#0 according to any SCS-based frequency bandwidth configuration.

[0153] Meanwhile, the sub-band may be configured in association with only a single downlink bandwidth part (BWP), or may be configured in association with only a single uplink bandwidth part (BWP).

[0154] The sub-band configuration information received by the terminal from the base station may further include sub-band identification information, and the sub-band identification information may be a sub-band ID or a sub-band index.

[0155] Fig.14 The following describes an operation method of a base station according to an embodiment of the present specification.

[0156] Reference Fig.14S1301: The base station transmits subband configuration information for full duplex communication to the terminal, wherein the subband configuration information may be received through high-layer signaling and configured semi-statically.

[0157] Thereafter, S1302: performing downlink transmission or uplink reception through a sub-band based on the transmitted sub-band configuration information. The sub-band configuration information includes sub-band frequency resource allocation information, and the location of the frequency resource of the sub-band can be based on a common resource block (CRB). The common resource block is a resource block based on the corresponding SCS, with the point A as the lowest subcarrier of CRB#0 according to any SCS-based frequency bandwidth configuration.

[0158] Meanwhile, the sub-band may be configured in association with only a single downlink bandwidth part (BWP), or may be configured in association with only a single uplink bandwidth part (BWP).

[0159] The sub-band configuration information transmitted by the base station to the terminal may further include sub-band identification information, and the sub-band identification information may be a sub-band ID or a sub-band index.

[0160] <Overview of Apparatus to Which This Specification Can Be Disclosed>

[0161] 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.

[0162] Fig.15 A device according to an embodiment of the present specification is shown.

[0163] Reference Fig.15 , a wireless communication system may include a first device 100a and a second device 100b.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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 transmit and receive wireless signals.

[0170] Fig.16 A block diagram showing the structure of a terminal according to an embodiment of the present specification.

[0171] in particular Fig.16 The foregoing is shown in more detail Fig.15 Figure 1.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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 one or more wires to send and / or receive wireless signals. In order to start communication, the processor 1020 sends instruction information to the transceiver 1031 to transmit wireless signals such as those 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 to baseband for processing by the processor 1020. The processed signals can be converted into auditory or visual information output through the speaker 1042.

[0177] 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.

[0178] 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.

[0179] Fig.17 A block diagram showing the structure of a processor that implements the disclosure of this specification.

[0180] Reference Fig.17It 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.

[0181] 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).

[0182] Fig.18 To show in detail Fig.15 The transceiver of the first device or Fig.16 Block diagram of the transceiver portion of the device shown.

[0183] Reference Fig.18 The transceiver unit 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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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, the method comprising the following steps: receiving sub-band configuration information for full-duplex communication; and performing downlink reception or uplink transmission using the sub-band based on the received sub-band configuration information, The sub-band configuration information includes sub-band frequency resource allocation information, and the location of the frequency resource of the sub-band is based on a common resource block.

2. The method according to claim 1, wherein: The sub-frequency bands are configured based on a single downlink broadband part and / or a single uplink broadband part, and the sub-frequency band configuration information is received through high-layer signaling.

3. The method according to claim 1, wherein: The sub-band frequency resource allocation information is based on a carrier bandwidth configuration based on a specific sub-carrier spacing.

4. The method according to claim 3, wherein: The sub-bands are associated with and configured to a single downlink broadband portion and / or a single uplink broadband portion, The single downlink broadband part and the single uplink broadband part are configured as a broadband part pair having the same broadband part ID.

5. The method according to claim 1, wherein: A guard band consisting of resource blocks is configured at the upper and / or lower ends adjacent to the sub-band in the frequency domain, and the size of the guard band is determined by at least one subcarrier spacing in the carrier broadband, the uplink broadband part and the downlink bandwidth part.

6. The method according to claim 1, wherein: The sub-band configuration information further includes sub-band identification information, and the sub-band identification information is a sub-band ID or a sub-band index.

7. A method for a base station to perform downlink transmission and / or uplink reception in a wireless communication system, wherein: The method comprises the following steps: transmitting sub-band configuration information for full-duplex communication; and performing downlink transmission or uplink reception through the sub-band based on the transmitted sub-band configuration information, The sub-band configuration information includes sub-band frequency resource allocation information, and the location of the frequency resource of the sub-band is based on a common resource block.

8. The method according to claim 7, wherein: The sub-frequency bands are configured based on a single downlink broadband part and / or a single uplink broadband part, and the sub-frequency band configuration information is transmitted through high-layer signaling.

9. The method according to claim 7, wherein: The sub-band frequency resource allocation information is based on a carrier bandwidth configuration based on a specific sub-carrier spacing.

10. The method according to claim 9, wherein: The sub-bands are associated with and configured to a single downlink broadband portion and / or a single uplink broadband portion, The single downlink broadband part and the single uplink broadband part are configured as a broadband part pair having the same broadband part ID.

11. The method according to claim 7, wherein: A guard band consisting of resource blocks is configured at the upper and / or lower ends adjacent to the sub-band in the frequency domain, and the size of the guard band is determined by at least one subcarrier spacing in the carrier broadband, the uplink broadband part and the downlink bandwidth part.

12. The method according to claim 7, wherein: The sub-band configuration information further includes sub-band identification information, and the sub-band identification information is a sub-band ID or a sub-band index.

13. A communication device in a wireless communication system, the communication device comprising: at least one processor; as well as at least one memory for storing instructions and operably connected to the at least one processor, and Based on the instruction, the at least one processor executes the operations including: the step of receiving sub-band configuration information for full-duplex communication, and By performing downlink reception or uplink transmission based on the sub-band based on the received sub-band configuration information, The sub-band configuration information includes sub-band frequency resource allocation information, and the location of the frequency resource of the sub-band is based on a common resource block.

14. The communication device according to claim 13, wherein: The sub-frequency bands are configured based on a single downlink broadband part and / or a single uplink broadband part, and the sub-frequency band configuration information is received through high-layer signaling.

15. The communication device according to claim 13, wherein: The sub-band frequency resource allocation information is based on a carrier bandwidth configuration based on a specific sub-carrier spacing.

16. The communication device according to claim 15, wherein: The sub-bands are associated with and configured to a single downlink broadband portion and / or a single uplink broadband portion, The single downlink broadband part and the single uplink broadband part are configured as a broadband part pair having the same broadband part ID.

17. The communication device according to claim 13, wherein: A guard band consisting of resource blocks is configured at the upper and / or lower ends adjacent to the sub-band in the frequency domain, and the size of the guard band is determined by at least one subcarrier spacing in the carrier broadband, the uplink broadband part and the downlink bandwidth part.

18. The communication device according to claim 13, wherein: The sub-band configuration information further includes sub-band identification information, and the sub-band identification information is a sub-band ID or a sub-band index.

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