KR20240009867A - Method and apparatus of configuring slot format for full duplex in wireless communication system - Google Patents

Abstract

A method and device for performing downlink transmission and reception and uplink transmission and reception in a wireless communication system are provided. The base station transmits subband configuration information for full duplex communication to the terminal. The terminal performs downlink reception or uplink transmission through a subband based on the received subband configuration information. The subband configuration information includes time axis resource configuration information, and the time axis resource configuration information is a reference subband. It includes carrier spacing (subcarrier spacing, SCS) setting information and at least one pattern setting information, and each pattern setting information of the at least one pattern setting information includes period information.

Description

{Method and apparatus of configuring slot format for full duplex in wireless communication system}

This specification relates to the 3GPP 5G NR system.

As more and more communication devices require larger communication traffic with the passage of time, the next-generation 5G system, which is an improved wireless broadband communication system than the existing LTE system, is required. In this next-generation 5G system, called NewRAT, communication scenarios are divided into Enhanced Mobile BroadBand (eMBB) / Ultra-reliability and low-latency communication (URLLC) / Massive Machine-Type Communications (mMTC).

Here, eMBB is a next-generation mobile communication scenario with characteristics such as High Spectrum Efficiency, High User Experienced Data Rate, and High Peak Data Rate, and URLLC is a next-generation mobile communication scenario with characteristics such as Ultra Reliable, Ultra Low Latency, and Ultra High Availability. (e.g., V2X, Emergency Service, Remote Control), mMTC is a next-generation mobile communication scenario with Low Cost, Low Energy, Short Packet, and Massive Connectivity characteristics. (e.g., IoT).

The present disclosure seeks to provide a method and device 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.

In an embodiment of the present specification, in a wireless communication system, a terminal receives subband configuration information for full duplex communication, and receives downlink or uplink through a subband based on the received subband configuration information. To perform transmission, the subband configuration information includes time axis resource configuration information, the time axis resource configuration information includes reference subcarrier spacing (SCS) configuration information and at least one pattern configuration information, , Provides a method in which each pattern setting information of at least one pattern setting information includes period information.

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

Additionally, embodiments of the present invention include, in a wireless communication system, at least one processor, and at least one memory that stores instructions and is operably electrically connectable to the at least one processor. , Based on the instruction being executed by at least one processor, the operations performed are: receiving subband configuration information for full duplex, and establishing a subband based on the received subband configuration information. Downlink reception or uplink transmission is performed through, where the subband configuration information includes time axis resource configuration information, and the time axis resource configuration information includes reference subcarrier spacing (SCS) configuration information and at least It provides a communication device that includes one pattern setting information, and each pattern setting information of the at least one pattern setting information includes period information.

Additionally, embodiments of the present invention include, in a wireless communication system, at least one processor, and at least one memory that stores instructions and is operably electrically connectable to the at least one processor. , Based on the instruction being executed by at least one processor, the operations performed are: transmitting subband configuration information for full duplex, and subband configuration information based on the transmitted subband configuration information. Downlink transmission or uplink reception is performed through, where the subband configuration information includes time axis resource configuration information, and the time axis resource configuration information includes reference subcarrier spacing (SCS) configuration information and at least It includes one pattern setting information, and each pattern setting information of the at least one pattern setting information provides a base station including period information.

The reference subcarrier spacing (SCS) setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are TDD (time division duplex) uplink-downlink setting common ( It can be determined based on the corresponding information included in the tdd-UL-DL-ConfigurationCommon) information element.

Each pattern setting information of the at least one pattern setting information further includes offset information, and the offset information may indicate a start point or end point of the subband.

As another embodiment, the start or end point of the subband may be fixed to a specific symbol of each pattern. In this case, the specific symbol may be one of the first symbol of the pattern, the first downlink symbol, the last downlink symbol, and the symbol immediately preceding the first uplink symbol.

Each pattern setting information of the at least one pattern setting information further includes duration information and may be based on the number of subband full duplex (SBFD) slots and/or the number of SBFD symbols. Here, the section information may be set excluding the symbols of SSB (synchronization signal block). To this end, the base station may transmit, and the terminal may receive, information indicating whether to exclude a synchronization signal block (SSB) symbol from the section information.

According to the disclosure of this 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.

1 is a diagram illustrating a wireless communication system.
Figure 2 illustrates the structure of a radio frame used in NR.
3A to 3C are illustrative diagrams illustrating an example architecture for wireless communication services.
Figure 4 illustrates the slot structure of an NR frame.
Figure 5 shows examples of subframe types in NR.
Figure 6 illustrates the structure of a self-contained slot.
Figures 7a and 7b are schematic examples of subband full duplex communication.
Figure 8 shows an example of slot configuration for subband full duplex communication according to an embodiment of the present specification.
Figure 9 shows another example of slot configuration for subband full duplex communication according to an embodiment of the present specification.
Figure 10 shows a method of operating a terminal according to an embodiment of the present specification.
Figure 11 shows a method of operating a base station according to an embodiment of the present specification.
Figure 12 shows a device according to one embodiment of the present specification.
Figure 13 is a block diagram showing the configuration of a terminal according to an embodiment of the present specification.
Figure 14 shows a configuration block diagram of a processor on which the disclosure of the present specification is implemented.
FIG. 15 is a block diagram showing in detail the transceiver of the first device shown in FIG. 12 or the transceiver unit of the device shown in FIG. 13.

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, technical terms used in this specification, unless specifically defined in a different way in this specification, should be interpreted as meanings generally understood by those skilled in the art in the technical field to which the disclosure of this specification pertains. It should not be interpreted in a very comprehensive sense or in an excessively reduced sense. Additionally, if the technical terms used in this specification are incorrect technical terms that do not accurately express the content and idea of the present specification, they should be replaced with technical terms that can be correctly understood by those skilled in the art. Additionally, general terms used in this specification should be interpreted as defined in the dictionary or according to the context, and should not be interpreted in an excessively reduced sense.

Additionally, as used herein, singular expressions include plural expressions, unless the context clearly dictates otherwise. In this application, terms such as constitute or have should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or steps may not be included. , or it should be interpreted that it may further include additional components or steps.

Additionally, terms including ordinal numbers, such as first, second, etc., used in this specification may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component without departing from the scope of rights, and similarly, the second component may also be named a first component.

When a component is mentioned as being connected or connected to another component, it may be directly connected or connected to the other component, but other components may also exist in between. On the other hand, when it is mentioned that a component is directly connected or directly connected to another component, it should be understood that no other components exist in the middle.

Hereinafter, the embodiment will be described in detail with reference to the attached drawings, but identical or similar components will be assigned the same reference numbers regardless of the reference numerals, and duplicate descriptions thereof will be omitted. Additionally, in explaining the contents of this specification, if it is determined that a detailed description of related known technology may obscure the gist of the present specification, the detailed description will be omitted. In addition, it should be noted that the attached drawings are only intended to facilitate easy understanding of the content and idea of the present specification, and should not be construed as limiting the content and idea of the present specification by the attached drawings. The content and ideas of this specification should be construed as extending to all changes, equivalents, or substitutes other than the attached drawings.

As used herein, “A or B” may mean “only A,” “only B,” or “both A and B.” In other words, in this specification, “A or B” may be interpreted as “A and/or B.” For example, as used herein, “A, B or C” means “only A,” “only B,” “only C,” or “any and all combinations of A, B, and C ( It can mean “any combination of A, B and C)”.

The slash (/) or comma used in this specification may mean “and/or.” For example, “A/B” can mean “A and/or B.” Accordingly, “A/B” can mean “only A,” “only B,” or “both A and B.” For example, “A, B, C” can mean “A, B, or C.”

As used herein, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” In addition, in this specification, the expression “at least one of A or B” or “at least one of A and/or B” means “at least one It can be interpreted the same as “at least one of A and B.”

In addition, as used herein, “at least one of A, B and C” means “only A”, “only B”, “only C”, or “A, B and C”. It can mean “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” means It may mean “at least one of A, B and C.”

Additionally, parentheses used in this specification may mean “for example.” Specifically, when “control information (PDCCH)” is indicated, “PDCCH (Physical Downlink Control Channel)” may be proposed as an example of “control information.” In other words, “control information” in this specification is not limited to “PDCCH,” and “PDDCH” may be proposed as an example of “control information.” Additionally, even when “control information (i.e., PDCCH)” is indicated, “PDCCH” may be proposed as an example of “control information.”

Technical features described individually in one drawing in this specification may be implemented individually or simultaneously.

In the attached drawings, a UE (User Equipment) is shown as an example, but the illustrated UE may also be referred to by terms such as terminal or ME (mobile equipment). Additionally, the UE may be a portable device such as a laptop, mobile phone, PDA, smart phone, or multimedia device, or may be a non-portable device such as a PC or vehicle-mounted device.

Hereinafter, UE is used as an example of a device capable of wireless communication (e.g., wireless communication device, wireless device, or wireless device). Operations performed by the UE may be performed by any device capable of wireless communication. A device capable of wireless communication may also be referred to as a wireless communication device, wireless device, or wireless device.

The term base station used below generally refers to a fixed station that communicates with wireless devices, such as eNodeB (evolved-NodeB), eNB (evolved-NodeB), BTS (Base Transceiver System), and access point ( It can be used as a comprehensive term including Access Point), gNB (Next generation NodeB), RRH (remote radio head), TP (transmission point), RP (reception point), relay, etc.

Although this specification describes embodiments using an LTE system, an LTE-A system, and an NR system, these embodiments may be applied to any communication system that falls within the above definition.

<Wireless communication system>

Thanks to the success of LTE (long term evolution)/LTE-Advanced (LTE-A) for 4th generation mobile communication, commercialization of the next generation, that is, 5th generation (so-called 5G) mobile communication, has been completed and follow-up research is continuing. .

The 5th generation mobile communication, as defined by the International Telecommunication Union (ITU), refers to providing a data transmission speed of up to 20Gbps and an experienced transmission speed of at least 100Mbps anywhere. The official name is referred to as ‘IMT-2020’.

ITU proposes three major usage scenarios, such as enhanced Mobile BroadBand (eMBB), massive Machine Type Communication (mMTC), and Ultra Reliable and Low Latency Communications (URLLC).

URLLC addresses usage scenarios that require high reliability and low latency. For example, services such as autonomous driving, factory automation, and augmented reality require high reliability and low latency (e.g., latency of less than 1 ms). The current 4G (LTE) latency is statistically 21-43ms (best 10%), 33-75ms (median). This is insufficient to support services requiring latency of 1ms or less. Next, the eMBB usage scenario concerns a usage scenario requiring mobile ultra-wideband.

In other words, the 5th generation mobile communication system supports higher capacity than the current 4G LTE, increases the density of mobile broadband users, and can support D2D (Device to Device), high stability, and MTC (Machine type communication). 5G research and development also targets lower latency and lower battery consumption than 4G mobile communication systems to better implement the Internet of Things. For such 5G mobile communication, a new radio access technology (New RAT or NR) may be proposed.

The NR frequency band can be defined as two types of frequency ranges (FR1, FR2). The values of the frequency range may be changed. For example, the frequency ranges of the two types (FR1, FR2) may be as shown in Table 1 below. For convenience of explanation, among the frequency ranges used in the NR system, FR1 may mean “sub 6GHz range,” and FR2 may mean “above 6GHz range” and may be called millimeter wave (mmW). .

Frequency Range designation Corresponding frequency range Subcarrier Spacing FR1 410MHz - 7125MHz 15, 30, 60kHz FR2 24250MHz - 52600MHz 60, 120, 240kHz

The values of the frequency range of the NR system may vary. For example, FR1 may include a band from 410MHz to 7125MHz as shown in Table 1. That is, FR1 may include a frequency band of 6GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included within FR1 may include an unlicensed band. Unlicensed bands can be used for a variety of purposes, for example, for communications for vehicles (eg, autonomous driving).

Meanwhile, the 3GPP-based communication standard includes downlink physical channels corresponding to resource elements that carry information originating from the upper layer, and resource elements that are used by the physical layer but do not carry information originating from the upper layer. Downlink physical signals are defined. For example, a physical downlink shared channel (PDSCH), a physical broadcast channel (PBCH), a physical multicast channel (PMCH), and a physical control format indicator channel (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. A reference signal (RS), also referred to as a pilot, refers to a signal with a predefined special waveform known to both the gNB and the UE, for example, cell specific RS (cell specific RS), UE- UE-specific RS (UE-RS), positioning RS (PRS), and channel state information RS (CSI-RS) are defined as downlink reference signals. The 3GPP LTE/LTE-A standard corresponds to uplink physical channels corresponding to resource elements carrying information originating from upper layers, and resource elements used by the physical layer but not carrying information originating from upper layers. Uplink physical signals are defined. For example, a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a physical random access channel (PRACH) are used as uplink physical channels. A demodulation reference signal (DMRS) for uplink control/data signals and a sounding reference signal (SRS) used for uplink channel measurement are defined.

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) are respectively DCI (Downlink Control Information) / CFI ( Control Format Indicator)/Downlink ACK/NACK (ACKnowlegement/Negative ACK)/Refers to a set of time-frequency resources or a set of resource elements carrying downlink data. Also, PUCCH (Physical Uplink Control CHannel)/PUSCH (Physical Uplink Shared CHannel)/PRACH (Physical Random Access CHannel) refers to a set of time-frequency resources or a set of resource elements that carry UCI (Uplink Control Information)/uplink data/random access signal, respectively.

1 is a diagram illustrating a wireless communication system.

As can be seen with reference to FIG. 1, a 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 5th generation mobile communication. The eNB (20b) supports 4th generation mobile communication, that is, long term evolution (LTE).

Each base station 20a and 20b provides communication services for a specific geographic area (generally referred to as a cell) 20-1, 20-2, and 20-3. A cell can be further divided into multiple areas (referred to as sectors).

A user equipment (UE) usually belongs to one cell, and the cell to which the UE belongs is called a serving cell. A base station that provides communication services to a serving cell is called a serving BS. Since the wireless communication system is a cellular system, there are other cells adjacent to the serving cell. Other cells adjacent to the serving cell are called neighboring cells. A base station that provides communication services to a neighboring cell is called a neighboring base station (neighbor BS). The serving cell and neighboring cells are determined relatively based on the UE.

Hereinafter, 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 part of the base station 20 and the receiver may be part of the UE 10. In the uplink, the transmitter may be part of the UE 10 and the receiver may be part of the base station 20.

Meanwhile, wireless communication systems can be broadly divided into FDD (frequency division duplex) and TDD (time division duplex) methods. According to the FDD method, uplink transmission and downlink transmission occur while occupying different frequency bands. According to the TDD method, uplink transmission and downlink transmission occupy the same frequency band and occur at different times. The channel response of the TDD method is substantially reciprocal. This means that in a given frequency region, the downlink channel response and the uplink channel response are almost identical. Therefore, in a wireless communication system based on TDD, there is an advantage that the downlink channel response can be obtained from the uplink channel response. In the TDD method, uplink transmission and downlink transmission are time-divided across the entire frequency band, so downlink transmission by the base station and uplink transmission by the UE cannot be performed simultaneously. In a TDD system in which uplink transmission and downlink transmission are separated on a subframe basis, uplink transmission and downlink transmission are performed in different subframes.

Figure 2 illustrates the structure of a radio frame used in NR.

In NR, uplink and downlink transmission consists of frames. A wireless frame is 10ms long and is defined as two 5ms half-frames (HF). A half-frame is defined as five 1ms subframes (Subframe, SF). A subframe is divided into one or more slots, and the number of slots in a subframe depends on SCS (Subcarrier Spacing). Each slot contains 12 or 14 OFDM(A) symbols depending on the cyclic prefix (CP). When regular CP is used, each slot contains 14 symbols. When extended CP is used, each slot contains 12 symbols. Here, the symbol may include an OFDM symbol (or CP-OFDM symbol) and an SC-FDMA symbol (or DFT-s-OFDM symbol).

<Support for various numerologies>

In the NR system, as wireless communication technology develops, multiple numerologies may be provided to the terminal. For example, if SCS is 15kHz, it supports wide area in traditional cellular bands, and if SCS is 30kHz/60kHz, it supports dense-urban, lower latency. And it supports a wider carrier bandwidth, and when SCS is 60kHz or higher, it supports a bandwidth greater than 24.25GHz to overcome phase noise.

The numerology can be defined by CP (cycle prefix) length and subcarrier spacing (SCS). One cell can provide multiple numerologies to a terminal. When the index of numerology is expressed as μ, each subcarrier spacing and the corresponding CP length can be as shown in the table below.

μ △f=2 ^μ 15 [kHz] CP 0 15 common One 30 common 2 60 General, extended 3 120 common 4 240 common 5 480 common 6 960 common

In the case of general CP, when the index of numerology is expressed as μ, the number of OFDM symbols per slot (N ^slot _symb ), the number of slots per frame (N ^frame,μ _slot ), and the number of slots per subframe (N ^subframe,μ _slot ) is as shown in the table below.

μ △f=2 ^μ 15 [kHz] N- ^slot _symbol N ^{frame, μ} _slot N ^{subframe, μ} _slot 0 15 14 10 One One 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

In the case of extended CP, when the index of numerology is expressed as μ, the number of OFDM symbols per slot (N ^slot _symb ), the number of slots per frame (N ^frame,μ _slot ), and the number of slots per subframe (N ^subframe,μ _slot ) is as shown in the table below.

μ SCS (15* ^2u ) N- ^slot _symbol N ^{frame, μ} _slot N ^{subframe, μ} _slot 2 60KHz (u=2) 12 40 4

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

3A to 3C are illustrative diagrams showing an example architecture for wireless communication services.

Referring to FIG. 3A, the UE is connected to an LTE/LTE-A-based cell and an NR-based cell in a dual connectivity (DC) manner.

The NR-based cell is connected to the existing core network for 4th generation mobile communication, that is, EPC (Evolved Packet Core).

Referring to Figure 3b, unlike Figure 3a, the LTE/LTE-A based cell is connected to the core network for 5th generation mobile communication, that is, the 5G core network.

A service method based on the architecture shown in FIGS. 3A and 3B above is called NSA (non-standalone).

Referring to Figure 3c, the UE is connected only to NR-based cells. The service method based on this architecture is called SA (standalone).

Meanwhile, in the NR, it may be considered that reception from the base station uses a downlink subframe, and transmission to the base station uses an uplink subframe. This method can be applied to paired and unpaired spectra. A pair of spectrum means that it contains two carrier spectra for downlink and uplink operations. For example, in a pair of spectrum, one carrier may include a downlink band and an uplink band that are paired with each other.

Figure 4 illustrates the slot structure of the NR frame.

A slot includes a plurality of symbols in the time domain. For example, in the case of a general CP, one slot includes 14 symbols, but in the case of an extended CP, one slot includes 12 symbols. A carrier wave includes a plurality of subcarriers in the frequency domain. RB (Resource Block) is defined as multiple (eg, 12) consecutive subcarriers in the frequency domain. BWP (Bandwidth Part) is defined as a plurality of consecutive (physical, P)RBs in the frequency domain and may correspond to one numerology (e.g., SCS, CP length, etc.). The terminal can configure up to N (e.g., 4) BWPs in the downlink and uplink. Downlink or uplink transmission is performed through an activated BWP, and at a given time, only one BWP among the BWPs configured for the terminal can be activated. Each element in the resource grid is referred to as a Resource Element (RE), and one complex symbol can be mapped.

Figure 5 shows examples of subframe types in NR.

The transmission time interval (TTI) shown in FIG. 5 may be called a subframe or slot for NR (or new RAT). The subframe (or slot) of FIG. 5 can be used in a TDD system of NR (or new RAT) to minimize data transmission delay. As shown in Figure 5, a subframe (or slot) includes 14 symbols. The first symbol of a subframe (or slot) can be used for a downlink (DL) control channel, and the last symbol of a subframe (or 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 slot) structure, downlink transmission and uplink transmission can proceed sequentially in one subframe (or slot). Accordingly, downlink data may be received within a subframe (or slot), and an uplink acknowledgment (ACK/NACK) may be transmitted within the subframe (or slot).

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

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

Using this subframe (or slot) structure has the advantage of minimizing the final data transmission waiting time by reducing the time it takes to retransmit data with reception errors. In such a self-contained subframe (or slot) structure, a time gap may be required in the transition process from transmission mode to reception mode or from reception mode to transmission mode. To this end, some OFDM symbols when switching from DL to UL in the subframe structure can be set to a guard period (GP).

Figure 6 illustrates the structure of a self-contained slot.

In the NR system, a frame features a self-contained structure in which a DL control channel, DL or UL data, and UL control channel can all be included in one slot. For example, the first N symbols in a slot may be used to transmit a DL control channel (hereinafter, DL control area), and the last M symbols in a slot may be used to transmit a UL control channel (hereinafter, UL control area). N and M are each integers greater than or equal to 0. The resource area (hereinafter referred to as data area) between the DL control area and the UL control area may be used for DL data transmission or may be used for UL data transmission. As an example, the following configuration may be considered. Each section is listed in chronological order.

1. DL only configuration

2. UL only configuration

3. Mixed UL-DL configuration

- DL area + GP (Guard Period) + UL control area

- DL control area + GP + UL area

DL area: (i) DL data area, (ii) DL control area + DL data area

UL area: (i) UL data area, (ii) UL data area + UL control area

PDCCH may be transmitted in the DL control area, and PDSCH may be transmitted in the DL data area. PUCCH may be transmitted in the UL control area, and PUSCH may be transmitted in the UL data area. In the PDCCH, Downlink Control Information (DCI), for example, DL data scheduling information, UL data scheduling information, etc. may be transmitted. In PUCCH, Uplink Control Information (UCI), for example, Positive Acknowledgment/Negative Acknowledgment (ACK/NACK) information for DL data, Channel State Information (CSI) information, Scheduling Request (SR), etc. may be transmitted. GP provides a time gap during the process of the base station and the terminal switching from transmission mode to reception mode or from reception mode to transmission mode. Some symbols at the point of transition from DL to UL within a subframe may be set to GP.

<Disclosure of this specification>

TDD (Time Division Duplex) is a duplexing method widely used in commercial NR (New Radio), that is, 5G mobile communication systems. In TDD, time-segment radio resources are divided into downlink slots and uplink slots, and usually downlink slots are distributed at a higher rate than uplink slots depending on the distribution ratio of uplink traffic and downlink traffic. However, this limitation of uplink slots has a negative impact in terms of coverage and delay time. Full duplex communication has recently been receiving attention as a technology to solve this problem.

Full duplex is a technology that simultaneously performs DL transmission and UL reception through the same (or designated) radio resource at a gNB, that is, a base station. The terminal may also perform DL reception and UL transmission simultaneously. In other words, both the base station and the terminal can support full duplex communication. However, unlike a base station, which structurally facilitates self-interference cancellation, the DL reception performance of the terminal is easily affected by self-interference of the UL transmission signal. Therefore, the case of operating in full duplex in gNB and half duplex in UE is generally considered. Additionally, subband non-overlapping full-duplex communication performs DL transmission and UL reception simultaneously in gNB to reduce the impact of self-interference, but transmits and receives separately on frequency resources rather than the same resources between DL/UL. (subband non-overlapping full duplex) method can be considered primarily.

As described above, various full duplex application scenarios are being considered based on the capabilities of the base station and terminal, frequency band, and frequency interference issues with other companies.

Figures 7a and 7b are schematic examples of subband full duplex communication.

In a wireless communication system utilizing OFDM, a duplexing method called subband full duplex may be used. Here, subband full duplex communication may be referred to as subband full duplex (SBFD) or full duplex subband (FDSB). Although the terms SBFD or FDSB are used interchangeably in this specification, they may have substantially the same meaning.

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

Figures 7a and 7b show examples of subband full duplex communication. In the frequency domain, Figure 7a shows an example in which an uplink subband is located between downlink subbands, and Figure 7b shows a downlink subband. This shows an example in which a link subband is located between uplink subbands. Although not shown in the drawing, a guard band or guard period may be located between the downlink subband and the uplink subband to reduce interference.

In this specification, a subband-based UL-DL slot configuration method is proposed as a method to support non-overlapping full duplex in gNB. However, the same content can be applied equally in various full duplex application scenarios. For example, it may include full duplex operation in an unpaired spectrum and full duplex operation in the DL frequency band or UL frequency band of a paired spectrum. . In addition, as described above, only on the gNB side, sub-band non-overlapping full duplex or pure full duplex (i.e., DL transmission and UL transmission simultaneously on the same frequency resource) reception) and can also be applied to a scenario where the terminal (UE) performs half duplex operation. In addition, the content of the present invention is the same even when not only the gNB but also the terminal (UE) supports sub-band non-overlapping full duplex or pure full duplex communication. It can be applied easily.

When the base station supports full duplex communication based on sub-band non-overlapping, the frequency resources of a specific sub-band in a random unpaired spectrum are used for DL transmission. UL-DL configuration is required, which is used as DL symbols for UL reception, and the frequency resources of another sub-band are used as UL symbols for UL reception. However, the UL-DL slot configuration defined in the current NR is defined to be performed on a cell basis through cell-specific radio resource control (RRC) signaling. That is, a pattern of periodic DL symbols, UL symbols, and flexible symbols is set through the RRC message ' tdd-UL-DL-ConfigurationCommon ' for the corresponding UL-DL slot configuration. Additionally, through UE-specific RRC signaling (UE-specific RRC signaling) ' tdd-UL-DL-ConfigurationDedicated ', UL is transmitted for each terminal only for flexible symbols set through ' tdd-UL-DL-ConfigurationCommon '. It can be reassigned as a symbol, DL symbol, or flexible symbol. In addition, a method for indicating a dynamic slot format through UE-group common PDCCH is also defined in NR. To this end, NR also supports a dynamic slot format indication method through DCI format 2_0.

Figure 8 shows an example of slot configuration for subband full duplex communication according to an embodiment of the present specification.

According to the existing slot configuration method described above, any one symbol can be set or indicated as one of DL, UL, or Flexible.

Referring to FIG. 8, the left side of FIG. 8 is an example in which an arbitrary slot format is set to DDDSU through existing slot configuration. Here, D means a downlink slot and all OFDM symbols constituting the slot are set to DL. U means an uplink slot and all OFDM symbols constituting the slot are set to UL. S refers to a special slot that includes a flexible symbol for DL/UL transition. Generally, in the case of normal CP, a special slot may consist of 12 DL symbols and 2 flexible symbols out of a total of 14 symbols. Alternatively, it may consist of 10 DL symbols, 2 flexible symbols, and 2 UL symbols. That is, within any one TDD carrier, one symbol is set or indicated only as one of DL, UL, or flexible.

but. As shown on the right side of FIG. 8, when a UL FDSB is set in an arbitrary DL slot, any symbol including the corresponding UL FDSB is 'DL and UL' or 'DL and flexible' depending on the location of the frequency resource. It may have a mixed transmission direction. In this specification, we propose a method of separately defining symbols whose DL, UL, and flexible characteristics can vary depending on the frequency location as mixed link (ML) symbols. That is, the base station/network can define to set or indicate the ML symbol for the existing DL, UL, and flexible symbols. Here, the present invention is not limited by the name of the ML symbol. For example, even if it is referred to by other names such as XL symbol, X symbol, etc., it is included in the scope of this specification.

As above, any ML symbol can be subdivided into several types depending on the combination of DL, UL, and flexible in the symbol. For example, when a UL FDSB is set in a random slot or symbol set to DL at the base station, any ML symbol including the corresponding UL FDSB has a combination of 'DL, UL' or 'DL, flexible ) can have a combination of '. Conversely, when a DL FDSB is set in an arbitrary UL slot or UL symbol, any ML symbol including the corresponding DL FDSB may have a combination of 'UL, DL' or 'UL, flexible'. Alternatively, if UL SBFD is set in a symbol set to flexible, it may be composed of a combination of 'flexible, UL', and conversely, if DL SBFD is set, it may be composed of a combination of 'flexible, DL'. . In the case of this arbitrary ML symbol, legacy slot settings, that is, slot settings set by the existing 'tdd-UL-DL-ConfigurationCommon', 'tdd-UL-DL-ConfigurationDedicated' or DCI format 2_0, and UL or One or more ML symbol types can be defined depending on whether DL SBFD is set.

In this way, the ML symbol, a new symbol format, is defined, and the ML symbol type is defined according to the combination between DL, UL, and Flexible that constitutes the ML symbol (i.e., the combination between the original slot configuration and FDSB configuration). If so, the base station/network can set or indicate the ML symbol and the type of ML symbol when configuring the slot for the terminal in the cell.

In the present invention, for convenience of explanation, the slot configuration supported by existing NR rel-15, 16, and 17 is referred to as legacy slot configuration. That is, the slot configuration according to the existing 'tdd-UL-DL-ConfigurationCommon', 'tdd-UL-DL-ConfigurationDedicated' or DCI format 2_0 is referred to as legacy slot configuration.

Any cell/base station supports subband non-overlapping full duplex in addition to transmitting legacy slot configuration information as described above for any terminal within the cell. Extended slot configuration information for the terminal may be transmitted.

Any base station/network may transmit extended slot configuration information including an ML symbol in addition to the existing legacy slot configuration information for terminals within a certain cell. Extended slot configuration information may be transmitted through cell-specific radio resource control (RRC) signaling. For example, a cell-specific RRC message for extended slot configuration, 'tdd-UL-DL-ConfigurationCommon_extended', may be defined. Alternatively, extended slot configuration information may be transmitted through UE-specific RRC signaling. For example, a UE-specific RRC message for extended slot configuration, 'tdd-UL-DL-ConfigurationDedicated_extended', may be defined. At this time, 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended' is used when legacy slot configuration is made by 'tdd-UL-DL-ConfigurationCommon'. The number of reference subcarrier spacing (SCS) and slot configuration patterns included in 'tdd-UL-DL-ConfigurationCommon' (1 or 2) and each pattern (pattern). ) can be restricted to follow the settings for the slot configuration period. That is, it can be limited to have the same reference SCS value as the legacy slot configuration, the same number of patterns, and the period for each pattern. Based on this, the extended slot configuration information through 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended' is randomly distributed through legacy slot configuration. Includes FDSB for symbols set as DL, UL or flexible based on the cycle (e.g. P when one pattern is set or P+P2 when two patterns are set) It can be defined to transmit location information of symbols being used. In other words, it can be defined to include location information of symbols that are reset to ML symbols. At this time, the location information of symbols that are reset to ML symbols through extended slot configuration information based on 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended' is legacy ( legacy) It is set and transmitted for each pattern of the slot configuration, and can be composed of offset information and duration information (i.e. number of symbols) of the symbol that is reset to the ML symbol. there is. In this case, additionally, ML symbol type information for symbols reset to the corresponding ML symbol can also be defined through the corresponding 'tdd-UL-DL-ConfigurationCommon_extended'. For example, in the case of DL symbols that have been reset to ML symbols, there are two combinations that operate flexibly in FDSB or operate in UL, so each symbol that is reset from DL to ML symbols has An information area can be included to indicate what ML symbol type it is. As one way to do this, the indication information area is in the form of a bitmap for each symbol reset to ML, or is composed of duration information of each ML symbol type or duration information of a specific ML symbol type ( duration) may be in the form of information. Alternatively, the information of the corresponding ML symbol type can be separately defined to be transmitted to each terminal through UE-specific RRC signaling.

As another way to configure ML symbol setting information, the ML symbol is limited to be set from a specific location depending on the type of FDSB (i.e., UL FDSB or DL FDSB), and then the type setting information of the FDSB and the corresponding Only duration information from the location can be defined to be set through extended slot configuration. For example, in the case of UL FDSB, the last DL symbol, the last flexible symbol as shown on the right of FIG. 8, or the previous consecutive symbols of the first UL symbol according to the legacy slot configuration. It can be limited to be configured for, and accordingly, it can be defined to set and transmit only the number information of consecutive ML symbols including the corresponding UL FDSB.

Figure 9 shows another example of slot configuration for subband full duplex communication according to an embodiment of the present specification.

When only information on the number of consecutive ML symbols including the UL FDSB described above is set and transmitted, the number of ML symbols in the symbol domain, 42, can be set and transmitted to the terminal, as shown in FIG. 9. there is. Alternatively, in the case of the corresponding ML symbol, the number N (=35) of (DL, UL) ML symbols and the number M (=7) of (DL, Flexible) ML symbols can be set and defined to be transmitted to the terminal. . However, when defining to support only a specific FDSB (e.g. supporting only UL FDSB), only the number information of ML symbols including UL FDSB can be defined to be set according to the method described above without setting information about the FDSB type. You can.

Meanwhile, in the previous description, from the perspective of resetting to the ML symbol through 'tdd-UL-DL-ConfigurationCommon_extended' or 'tdd-UL-DL-ConfigurationDedicated_extended', the DL, UL or flexible symbol that is reset to the corresponding ML symbol is used. A method for setting the location of is described, but the content can be defined in a different way so that it is set by the base station and interpreted by the terminal. In other words, in order to support subband non-overlapping full duplex communication, the content includes an information area that sets a DL and flexible symbol including UL FDSB or a DL FDSB. It is defined as an information area for setting UL and flexible symbols, and can be set by the base station and interpreted by the terminal. That is, for symbols set as DL symbols or flexible symbols by legacy slot configuration, the location information of the symbol including the UL FDSB can be defined to be transmitted to the terminal in the method described above. . Alternatively, a separate cell-specific RRC or UE-specific RRC message can be defined only for FDSB configuration, and reconfiguration information for the corresponding ML symbol can be transmitted through this. For example, a cell-specific or UE-specific RRC message is defined for UL FDSB or DL FDSB configuration, and symbol allocation information is transmitted along with frequency resource allocation information of the corresponding UL FDSB or DL FDSB. It can be defined as much as possible, and the corresponding symbol allocation information can follow the method of configuring ML symbol setting information described above.

Additionally, DCI (downlink control information) format 2_0 or a new UE-group common or UE-specific DCI format is defined and a slot format containing the corresponding ML symbol is defined. ) It can be defined so that an indication is given. According to the existing DCI format 2_0-based slot format indication method, the base station uses the slot format indicator-index (SFI-index) field through RRC signaling. A slot format combination for each 'slotFormatCombinationId' that can be indicated through is configured, and the slot format table for this is defined as shown in Table 5 below.

Format Symbol number in a slot 0 One 2 3 4 5 6 7 8 9 10 11 12 13 0 D D D D D D D D D D D D D D One U U U U U U U U U U U U U U 2 F F F F F F F F F F F F F F 3 D D D D D D D D D D D D D F 4 D D D D D D D D D D D D F F 5 D D D D D D D D D D D F F F 6 D D D D D D D D D D F F F F 7 D D D D D D D D D F F F F F 8 F F F F F F F F F F F F F U 9 F F F F F F F F F F F F U U 10 F U U U U U U U U U U U U U 11 F F U U U U U U U U U U U U 12 F F F U U U U U U U U U U U 13 F F F F U U U U U U U U U U 14 F F F F F U U U U U U U U U 15 F F F F F F U U U U U U U U 16 D F F F F F F F F F F F F F 17 D D F F F F F F F F F F F F 18 D D D F F F F F F F F F F F 19 D F F F F F F F F F F F F U 20 D D F F F F F F F F F F F U 21 D D D F F F F F F F F F F U 22 D F F F F F F F F F F F U U 23 D D F F F F F F F F F F U U 24 D D D F F F F F F F F F U U 25 D F F F F F F F F F F U U U 26 D D F F F F F F F F F U U U 27 D D D F F F F F F F F U U U 28 D D D D D D D D D D D D F U 29 D D D D D D D D D D D F F U 30 D D D D D D D D D D F F F U 31 D D D D D D D D D D D F U U 32 D D D D D D D D D D F F U U 33 D D D D D D D D D F F F U U 34 D F U U U U U U U U U U U U 35 D D F U U U U U U U U U U U 36 D D D F U U U U U U U U U U 37 D F F U U U U U U U U U U U 38 D D F F U U U U U U U U U U 39 D D D F F U U U U U U U U U 40 D F F F U U U U U U U U U U 41 D D F F F U U U U U U U U U 42 D D D F F F U U U U U U U U 43 D D D D D D D D D F F F F U 44 D D D D D D F F F F F F U U 45 D D D D D D F F U U U U U U 46 D D D D D F U D D D D D F U 47 D D F U U U U D D F U U U U 48 D F U U U U U D F U U U U U 49 D D D D F F U D D D D F F U 50 D D F F U U U D D F F U U U 51 D F F U U U U D F F U U U U 52 D F F F F F U D F F F F F U 53 D D F F F F U D D F F F F U 54 F F F F F F F D D D D D D D 55 D D F F F U U U D D D D D D 56 - 254 Reserved 255 UE determines the slot format for the slot based on tdd-UL-DL-ConfigurationCommon , or tdd-UL-DL-ConfigurationDedicated and, if any, on detected DCI formats

In Table 5, a new extension is made to configure a slot format including ML symbols or ML symbol types according to detailed combinations of ML symbols through reserved formats 56 to 254. You can define a slot format table. Based on this, when configuring a slot format combination for any terminal, whether to use the legacy slot format table as shown in Table 5, or the newly defined extended table. Defines an information area to indicate whether to configure a slot format combination based on the slot format table, or an extended slot format table. The RRC message format can be defined based on a new extended slot format combination configuration.

Hereinafter, a method for configuring a UL subband (i.e., UL FDSB) and a DL subband (i.e., DL FDSB) to support SBFD operation in a base station and a terminal according to the method proposed in the previous description, in particular, a method for configuring an arbitrary UL subband or DL The time domain resource allocation method of the subband is described in detail.

In this specification, 'a specific downlink wireless channel, signal, or information is received by the terminal' may include the meaning of 'the same downlink wireless channel, signal, or information is transmitted from the base station.' Conversely, 'a specific uplink wireless channel, signal, or information is transmitted from the terminal' may include the meaning of 'the same uplink wireless channel, signal, or information is received at the base station.'

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

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

Accordingly, the UL subband is repeatedly set on the time axis according to the number of given patterns and the period information for each pattern, and is set according to the offset, SBFD slot number setting information, and/or SBFD symbol number setting information. Accordingly, within each pattern period, the start point (or end point) and duration on the time axis on which the UL subband is configured can be set.

The time resource configuration information of the UL subband is set semi-statically by the base station through UE-specific or cell-specific RRC signaling, or MAC (medium access control) may be indicated dynamically through CE (control element) signaling and Layer 1 (L1) control signaling.

At this time, as described above, some of the time resource configuration information of the UL subband, that is, the SBFD slot/symbol time resource configuration information for which the UL subband is configured, is legacy slot configuration. ) can be decided based on information. For example, the reference SCS, pattern, and period configuration information for time resource configuration of the UL subband is stored in 'tdd-UL-DL-ConfigurationCommon' for legacy slot configuration. It can be defined to follow the included reference SCS, pattern, and cycle setting information. That is, the pattern and cycle configuration information included in 'tdd-UL-DL-ConfigurationCommon' for cell-specific UL-DL configuration, that is, the reference SCS and slot configuration pattern (slot configuration) You can follow the settings for the number of patterns (1 or 2) and the slot configuration period (P) of each pattern (or, if there are two patterns, P+P2).

That is, the reference SCS for time resource configuration of any UL subband is a reference included in 'tdd-UL-DL-ConfigurationCommon' for the above legacy slot configuration ( reference) You can follow the SCS value. Additionally, the time resource setting of the UL subband can be set based on one pattern (pattern1) or two patterns (pattern1) and pattern 2 (pattern2) with a constant period. At this time, whether the UL subband will include one pattern 1 (pattern1) setting or two pattern 1 (pattern1) and pattern 2 (pattern2) settings will be determined based on the above legacy slot settings (slot). configuration) It can be done according to the number of patterns included in 'tdd-UL-DL-ConfigurationCommon'. In addition, the period information for each pattern of the UL subband, that is, the P value when only one pattern 1 (pattern1) is set, and the P value when two patterns 1 (pattern1) and pattern (pattern2) are set. Each P value and P2 value can also follow the period value P and P2 included in the legacy slot configuration 'tdd-UL-DL-ConfigurationCommon'.

Accordingly, the time resource configuration information of any UL subband is explicitly set only for the offset information and duration information of the corresponding UL subband, making it UE-specific. /Can be defined to be transmitted to the terminal through cell-specific RRC signaling, MAC CE signaling, or L1 control signaling. Alternatively, the offset information may also be implicitly determined, and only the duration information may be explicitly set and transmitted to the terminal. At this time, the duration setting information is flexible among or in addition to the legacy slot configuration, especially DL slots and DL symbols by 'tdd-UL-DL-ConfigurationCommon'. It can be defined to include SBFD slots including symbols and UL subbands, or to include information on the number of consecutive SBFD slots and SBFD symbols that are converted or reset to SBFD symbols, or to include only information on the number of consecutive SBFD symbols. there is. At this time, offset information corresponding to the start point (or end point) of the continuous (number of SBFD slots + number of consecutive SBFD symbols) or UL subband duration according to the setting of the number of consecutive SBFD symbols. Also, as described above, it can be explicitly set as an offset symbol (or slot) value from the starting point of each pattern 1 (pattern1) and pattern 2 (pattern2) and transmitted to the terminal. At this time, the offset symbol may be the start or end point of the corresponding UL subband.

On the other hand, the offset value can have any fixed value. For example, the UL subband is the starting point of each pattern (e.g., legacy slot configuration, the first DL slot by 'tdd-UL-DL-ConfigurationCommon') It can be defined to be set with a certain duration in the first symbol). At this time, as described above, the duration information of the corresponding UL subband includes information on the number of consecutive DL slots including the corresponding UL subband and information on the number of consecutive DL symbols, that is, the UL subband. It consists of information on the number of SBFD slots and SBFD symbols that are converted/reset to SBFD slots/symbols through subband settings, or is simply set as information on the number of consecutive DL symbols (i.e., information on the number of SBFD symbols). and can be transmitted to the terminal. As another method of fixed offset value, the fixed offset value is the end point of the UL subband duration, and is the first in each pattern by legacy slot configuration. It may be defined as the symbol immediately preceding the UL symbol, or as the last DL symbol. Accordingly, the corresponding UL subband can be set with the corresponding offset as the end point during the duration according to the setting of the number of SBFD slots and/or the number of SBFD symbols.

Additionally, as described above, when the duration of the UL subband is set as a continuous slot or symbol, in the case of a DL symbol for which SSB (synchronization signal block) transmission is set / indicated, the corresponding consecutive slot or symbol Define exclusion from counting, or set exclusion at the base station through cell-specific/UE-specific RRC signaling, or UE-specific or group common. -common) Can be defined to indicate through DCI.

<Summary of embodiments of this specification>

Figure 10 shows a method of operating a terminal according to an embodiment of the present specification.

Referring to FIG. 10, the terminal receives subband configuration information for full duplex communication from the base station (S1001). Here, subband configuration information may be received through higher layer signaling and set semi-statically. Higher layer signaling may be UE-specific RRC signaling or cell-specific RRC signaling. On the other hand, subband configuration information may be set dynamically through MAC CE signaling or L1 control signaling.

Thereafter, downlink reception or uplink transmission is performed through a subband based on the received subband configuration information (S1002). The subband configuration information includes time axis resource configuration information, and the time axis resource configuration information is referenced (S1002). reference) includes subcarrier spacing (SCS) configuration information and at least one pattern configuration information, and each pattern configuration information of the at least one pattern configuration information may include period information.

The reference subcarrier spacing (SCS) setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are TDD (time division duplex) uplink-downlink setting common ( It can be determined based on the tdd-UL-DL-ConfigurationCommon) information element (IE). Preferably, it may be determined in correspondence with the reference SCS setting information included in the 'tdd-UL-DL-ConfigurationCommon' IE, the number of pattern setting information (or number of patterns), and the period setting information for each pattern.

Each pattern setting information of the at least one pattern setting information further includes offset information, and the offset information may indicate a start point or end point of the subband.

As another example, the start or end point of the subband may be fixed to a specific symbol of each pattern. In this case, the specific symbol may be one of the first symbol of the pattern, the first downlink symbol, the last downlink symbol, and the symbol immediately preceding the first uplink symbol.

Each pattern setting information of the at least one pattern setting information further includes duration information and may be based on the number of subband full duplex (SBFD) slots and/or the number of SBFD symbols. Here, the section information may be set excluding the symbols of SSB (synchronization signal block). To this end, information indicating whether to exclude a synchronization signal block (SSB) symbol from the section information may be received from the base station.

Figure 11 shows a method of operating a base station according to an embodiment of the present specification.

Referring to FIG. 11, the base station transmits subband configuration information for full duplex communication to the terminal (S1101). Here, subband configuration information may be transmitted through higher layer signaling and set semi-statically. Higher layer signaling may be UE-specific RRC signaling or cell-specific RRC signaling. On the other hand, subband configuration information may be set dynamically through MAC CE signaling or L1 control signaling.

The reference subcarrier spacing (SCS) setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are TDD (time division duplex) uplink-downlink setting common ( It can be determined based on the tdd-UL-DL-ConfigurationCommon) information element (IE). Preferably, it may be determined in correspondence with the reference SCS setting information included in the 'tdd-UL-DL-ConfigurationCommon' IE, the number of pattern setting information (or number of patterns), and the period setting information for each pattern.

Each pattern setting information of the at least one pattern setting information further includes offset information, and the offset information may indicate a start point or end point of the subband.

As another example, the start or end point of the subband may be fixed to a specific symbol of each pattern. In this case, the specific symbol may be one of the first symbol of the pattern, the first downlink symbol, the last downlink symbol, and the symbol immediately preceding the first uplink symbol.

Each pattern setting information of the at least one pattern setting information further includes duration information and may be based on the number of subband full duplex (SBFD) slots and/or the number of SBFD symbols. Here, the section information may be set excluding the symbols of SSB (synchronization signal block). To this end, information indicating whether to exclude a synchronization signal block (SSB) symbol from the section information may be transmitted to the terminal.

<General devices to which the disclosure of this specification can be applied>

The disclosures herein described so far may be implemented through various means. For example, the disclosures herein may be implemented by hardware, firmware, software, or a combination thereof. Specifically, the description will be made with reference to the drawings.

Figure 12 shows a device according to one embodiment of the present specification.

Referring to FIG. 12, a wireless communication system may include a first device 100a and a second device 100b.

The first device 100a may be a base station, a network node, a transmitting terminal, a receiving terminal, a wireless device, a wireless communication device, a vehicle, a vehicle equipped with an autonomous driving function, a connected car, or a drone (Unmanned Aerial Vehicle, UAV), AI (Artificial Intelligence) module, robot, AR (Augmented Reality) device, VR (Virtual Reality) device, MR (Mixed Reality) device, hologram device, public safety device, MTC device, IoT device, medical device, pin It may be a tech device (or financial device), security device, climate/environment device, device related to 5G service, or other device related to the 4th Industrial Revolution field.

The second device 100b is a base station, a network node, a transmitting terminal, a receiving terminal, a wireless device, a wireless communication device, a vehicle, a vehicle equipped with an autonomous driving function, a connected car, and a drone (Unmanned Aerial Vehicle, UAV), AI (Artificial Intelligence) module, robot, AR (Augmented Reality) device, VR (Virtual Reality) device, MR (Mixed Reality) device, hologram device, public safety device, MTC device, IoT device, medical device, pin It may be a tech device (or financial device), security device, climate/environment device, device related to 5G service, or other device related to the 4th Industrial Revolution field.

The first device 100a may include at least one processor such as the processor 1020a, at least one memory such as the memory 1010a, and at least one transceiver such as the transceiver 1031a. The processor 1020a may perform the functions, procedures, and/or methods described above. The processor 1020a may perform one or more protocols. For example, the processor 1020a may perform one or more layers of a wireless interface protocol. The memory 1010a is connected to the processor 1020a and can store various types of information and/or commands. The transceiver 1031a is connected to the processor 1020a and can be controlled to transmit and receive wireless signals.

The second device 100b may include at least one processor such as the processor 1020b, at least one memory device such as the memory 1010b, and at least one transceiver such as the transceiver 1031b. The processor 1020b may perform the functions, procedures, and/or methods described above. The processor 1020b may implement one or more protocols. For example, the processor 1020b may implement one or more layers of a wireless interface protocol. The memory 1010b is connected to the processor 1020b and can store various types of information and/or commands. The transceiver 1031b is connected to the processor 1020b and can be controlled to transmit and receive wireless signals.

The memory 1010a and/or the memory 1010b may be connected to each other inside or outside the processor 1020a and/or the processor 1020b, and may be connected to other processors through various technologies such as wired or wireless connection. It may also be connected to .

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

Figure 13 is a block diagram showing the configuration of a terminal according to an embodiment of the present specification.

In particular, Figure 13 is a diagram illustrating the device of Figure 12 in more detail.

The device includes a memory 1010, a processor 1020, a transceiver 1031, a power management module 1091, a battery 1092, a display 1041, an input unit 1053, a speaker 1042, and a microphone 1052. Includes a subscriber identification module (SIM) card and one or more antennas.

Processor 1020 may be configured to implement the suggested functions, procedures and/or methods described herein. Layers of a radio interface protocol may be implemented in the processor 1020. Processor 1020 may include an application-specific integrated circuit (ASIC), other chipset, logic circuit, and/or data processing device. The processor 1020 may be an application processor (AP). The processor 1020 may include at least one of a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), and a modem (modulator and demodulator). Examples of processors 1020 include SNAPDRAGONTM series processors manufactured by Qualcomm®, EXYNOSTM series processors manufactured by Samsung®, A series processors manufactured by Apple®, HELIOTM series processors manufactured by MediaTek®, INTEL® It may be an ATOM™ series processor manufactured by, a KIRINT™ series processor manufactured by HiSilicon®, or a corresponding next-generation processor.

The power management module 1091 manages power for the processor 1020 and/or the transceiver 1031. Battery 1092 supplies power to power management module 1091. The display 1041 outputs the results processed by the processor 1020. Input unit 1053 receives input to be used by processor 1020. The input unit 1053 may be displayed on the display 1041. A SIM card is an integrated circuit used to securely store an international mobile subscriber identity (IMSI) and its associated keys, which are used to identify and authenticate subscribers in mobile phone devices such as mobile phones and computers. You can also store contact information on many SIM cards.

The memory 1010 is operably coupled to the processor 1020 and stores various information for operating the processor 610. Memory 1010 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and/or other storage devices. When an embodiment is implemented as software, the techniques described herein may be implemented as modules (eg, procedures, functions, etc.) that perform the functions described herein. Modules may be stored in memory 1010 and executed by processor 1020. The memory 1010 may be implemented inside the processor 1020. Alternatively, the memory 1010 may be implemented external to the processor 1020 and may be communicatively connected to the processor 1020 through various means known in the art.

The transceiver 1031 is operably coupled to the processor 1020 and transmits and/or receives wireless signals. The transceiver unit 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 antennas to transmit and/or receive wireless signals. The processor 1020 transmits command information to the transceiver 1031 to initiate communication, for example, to transmit a wireless signal constituting voice communication data. The antenna functions to transmit and receive wireless signals. When receiving a wireless signal, the transceiver 1031 may transfer the signal and convert the signal to baseband for processing by the processor 1020. The processed signal may be converted into audible or readable information output through the speaker 1042.

The speaker 1042 outputs sound-related results processed by the processor 1020. Microphone 1052 receives sound-related input to be used by processor 1020.

The user inputs command information such as a phone number, for example, by pressing (or touching) a button on the input unit 1053 or by voice activation using the microphone 1052. The processor 1020 receives this command information and processes it to perform appropriate functions, such as calling a phone number. Operational data can be extracted from the SIM card or memory 1010. Additionally, the processor 1020 may display command information or driving information on the display 1041 for the user's recognition and convenience.

Figure 14 shows a configuration block diagram of a processor on which the disclosure of the present specification is implemented.

As can be seen with reference to FIG. 14, the processor 1020 on which the disclosure of the present disclosure is implemented includes a plurality of circuitry to implement the proposed functions, procedures and/or methods described herein. can do. For example, the processor 1020 may include a first circuit 1020-1, a second circuit 1020-2, and a third circuit 1020-3. Additionally, although not shown, the processor 1020 may include more circuits. Each circuit may include a plurality of transistors.

The processor 1020 may be called an application-specific integrated circuit (ASIC) or an application processor (AP), and includes at least one of a digital signal processor (DSP), a central processing unit (CPU), and a graphics processing unit (GPU). can do.

FIG. 15 is a block diagram showing in detail the transceiver of the first device shown in FIG. 12 or the transceiver unit of the device shown in FIG. 13.

Referring to FIG. 15, the transceiver 1031 includes a transmitter 1031-1 and a receiver 1031-2. The transmitter (1031-1) includes a Discrete Fourier Transform (DFT) unit (1031-11), a subcarrier mapper (1031-12), an IFFT unit (1031-13), a CP insertion unit (1031-14), and a wireless transmitter (1031). -15). The transmitter 1031-1 may further include a modulator. In addition, it may further include, for example, a scramble unit (not shown), a modulation mapper (not shown), a layer mapper (not shown), and a layer permutator (not shown), This may be placed prior to the DFT unit 1031-11. That is, in order to prevent an increase in the peak-to-average power ratio (PAPR), the transmitter 1031-1 first passes information through the DFT 1031-11 before mapping the signal to the subcarrier. The signal spread (or precoded in the same sense) by the DFT unit 1031-11 is subcarrier mapped through the subcarrier mapper 1031-12, and then again in the IFFT (Inverse Fast Fourier Transform) unit 1031-12. 13) to create a signal on the time axis.

The DFT unit 1031-11 performs DFT on the input symbols and outputs complex-valued symbols. For example, when Ntx symbols are input (where Ntx is a natural number), the DFT size is Ntx. The DFT unit 1031-11 may be called a transform precoder. The subcarrier mapper 1031-12 maps the complex symbols to each subcarrier in the frequency domain. The complex symbols may be mapped to resource elements corresponding to resource blocks allocated for data transmission. The subcarrier mapper 1031-12 may be called a resource element mapper. The IFFT unit 1031-13 performs IFFT on the input symbols and outputs a baseband signal for data that is a time domain signal. The CP insertion unit 1031-14 copies a part of the latter part of the basic band signal for data and inserts it into the front part of the basic band signal for data. Through CP insertion, ISI (Inter-Symbol Interference) and ICI (Inter-Carrier Interference) are prevented, and orthogonality can be maintained even in multi-path channels.

On the other hand, the receiver 1031-2 includes a wireless reception unit 1031-21, a CP removal unit 1031-22, an FFT unit 1031-23, and an equalization unit 1031-24. The wireless receiving unit 1031-21, CP removing unit 1031-22, and FFT unit 1031-23 of the receiver 1031-2 are the wireless transmitting unit 1031-15 in the transmitting end 1031-1, It performs the reverse function of the CP insertion unit (1031-14) and the IFF unit (1031-13). The receiver 1031-2 may further include a demodulator.

In the above, preferred embodiments have been described by way of example, but the disclosure of the present specification is not limited to these specific embodiments, and may be modified, changed, or modified in various forms within the scope described in the spirit and claims of the present specification. It can be improved.

In the example system described above, the methods are described on the basis of a flow chart as a series of steps or blocks, but the order of steps described is not limited, and some steps may occur simultaneously or in a different order than other steps as described above. there is. Additionally, those skilled in the art will understand that the steps shown in the flowchart are not exclusive and that other steps may be included or one or more steps in the flowchart may be deleted without affecting the scope of rights.

The claims set forth herein may be combined in various ways. For example, the technical features of the method claims of this specification may be combined to implement a device, and the technical features of the device claims of this specification may be combined to implement a method. Additionally, the technical features of the method claims of this specification and the technical features of the device claims may be combined to implement a device, and the technical features of the method claims of this specification and technical features of the device claims may be combined to implement a method.

Claims (25)

In a method for a terminal to perform downlink reception and/or uplink transmission in a wireless communication system,
Receiving subband configuration information for full duplex communication; and
Comprising the step of performing downlink reception or uplink transmission through a subband based on the received subband configuration information,
The subband configuration information includes time axis resource configuration information,
The time axis resource configuration information includes reference subcarrier spacing (SCS) configuration information and at least one pattern configuration information,
Each pattern setting information of the at least one pattern setting information includes period information. According to paragraph 1,
The reference subcarrier spacing (SCS) setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are TDD (time division duplex) uplink-downlink setting common ( tdd-UL-DL-ConfigurationCommon) A method determined based on corresponding information contained in an information element. According to paragraph 1,
Each pattern setting information of the at least one pattern setting information further includes offset information, and the offset information indicates a start point or end point of the subband. According to paragraph 1,
The method wherein the start or end point of the subband is fixed to a specific symbol of each pattern. According to paragraph 4,
The method wherein the specific symbol is one of the first symbol of the pattern, the first downlink symbol, the last downlink symbol, and the symbol immediately preceding the first uplink symbol. According to paragraph 1,
Each pattern setting information of the at least one pattern setting information further includes duration information and is based on the number of subband full duplex (SBFD) slots and/or the number of SBFD symbols. According to clause 6,
The method wherein the section information is set excluding symbols of SSB (synchronization signal block). According to clause 6,
The method further comprising receiving information indicating whether to exclude a symbol of a synchronization signal block (SSB) from the section information. In a method for a base station to perform downlink transmission and/or uplink reception in a wireless communication system,
Transmitting subband configuration information for full duplex communication; and
A step of performing downlink transmission or uplink reception through a subband based on the transmitted subband configuration information,
The subband configuration information includes time axis resource configuration information,
The time axis resource configuration information includes reference subcarrier spacing (SCS) configuration information and at least one pattern configuration information,
Each pattern setting information of the at least one pattern setting information includes period information. According to clause 9,
The reference subcarrier spacing (SCS) setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are TDD (time division duplex) uplink-downlink setting common ( tdd-UL-DL-ConfigurationCommon) A method determined based on corresponding information contained in an information element. According to clause 9,
Each pattern setting information of the at least one pattern setting information further includes offset information, and the offset information indicates a start point or end point of the subband. According to clause 9,
The method wherein the start or end point of the subband is fixed to a specific symbol of each pattern. According to clause 12,
The method wherein the specific symbol is one of the first symbol of the pattern, the first downlink symbol, the last downlink symbol, and the symbol immediately preceding the first uplink symbol. According to clause 9,
Each pattern setting information of the at least one pattern setting information further includes duration information and is based on the number of subband full duplex (SBFD) slots and/or the number of SBFD symbols. According to clause 14,
The method wherein the section information is set excluding symbols of SSB (synchronization signal block). According to clause 14,
The method further includes transmitting information indicating whether to exclude a symbol of a synchronization signal block (SSB) from the section information. As a communication device in a wireless communication system,
at least one processor; and
At least one memory storing instructions, operably electrically connectable with the at least one processor, and based on the instructions being executed by the at least one processor, perform The behavior is:
Receiving subband setting information for full duplex communication, and
Comprising the step of performing downlink reception or uplink transmission through a subband based on the received subband configuration information,
The subband configuration information includes time axis resource configuration information,
The time axis resource configuration information includes reference subcarrier spacing (SCS) configuration information and at least one pattern configuration information,
Each pattern setting information of the at least one pattern setting information includes period information. According to clause 17,
The reference subcarrier spacing (SCS) setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are TDD (time division duplex) uplink-downlink setting common ( tdd-UL-DL-ConfigurationCommon) A communication device determined based on corresponding information contained in an information element. According to clause 17,
Each pattern setting information of the at least one pattern setting information further includes offset information, and the offset information indicates a starting point or an ending point of the subband. According to clause 17,
A communication device wherein the start or end point of the subband is fixed to a specific symbol of each pattern. According to clause 20,
The specific symbol is one of the first symbol of the pattern, the first downlink symbol, the last downlink symbol, and the symbol immediately preceding the first uplink symbol. As a base station in a wireless communication system,
at least one processor; and
At least one memory storing instructions, operably electrically connectable with the at least one processor, and based on the instructions being executed by the at least one processor, perform The behavior is:
A step of transmitting subband setting information for full duplex communication, and
A step of performing downlink transmission or uplink reception through a subband based on the transmitted subband configuration information,
The subband configuration information includes time axis resource configuration information,
The time axis resource configuration information includes reference subcarrier spacing (SCS) configuration information and at least one pattern configuration information,
Each pattern setting information of the at least one pattern setting information includes period information. According to clause 22,
The reference subcarrier spacing (SCS) setting information, the number of the at least one pattern setting information, and the period information of each pattern setting information are TDD (time division duplex) uplink-downlink setting common ( tdd-UL-DL-ConfigurationCommon) Base station determined based on the corresponding information contained in the information element. According to clause 22,
Each pattern setting information of the at least one pattern setting information further includes offset information, and the offset information indicates a starting point or an ending point of the subband. According to clause 22,
A base station where the start or end point of the subband is fixed to a specific symbol of each pattern.