WO2018048053A1

WO2018048053A1 - Method for transmitting/receiving signal in wireless communication system and device therefor

Info

Publication number: WO2018048053A1
Application number: PCT/KR2017/003954
Authority: WO
Inventors: 김규석; 이윤정
Original assignee: 엘지전자 주식회사
Priority date: 2016-09-09
Filing date: 2017-04-12
Publication date: 2018-03-15

Abstract

The present specification discloses a method for transmitting/receiving a signal in a wireless communication system, the method performed by a terminal including: a step for receiving, from a base station through higher layer signaling, control information related to subcarrier spacing determining a radio frame structure; and a step for transmitting/receiving the signal to/from the base station through a first radio frame structure corresponding to specific subcarrier spacing on the basis of the received control information, characterized in that the specific subcarrier spacing is defined on the basis of reference subcarrier spacing and a scaling factor, and the first radio frame structure scales a reference radio frame structure for each symbol by using the scaling factor.

Description

【Specification】

[Name of invention]

Method and apparatus for transmitting and receiving signals in wireless communication system

The present disclosure relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting and receiving a signal between a terminal and a base station in a wireless communication system.

Background Art

Mobile communication systems have been developed to provide voice services while ensuring user activity. However, the mobile communication system has expanded not only voice but also data service. Currently, the explosive increase in traffic causes resource shortages and users demand faster services. Therefore, more advanced mobile communication systems are required. have .

The requirements of the next generation of mobile communication systems will be able to accommodate the explosive data traffic, dramatically increase the data rate per user, greatly increase the number of connected devices, very low end-to-end latency, and high energy efficiency. It should be possible. For this purpose, Dual Connectivity, Massive Multiple Input Multiple Output (MIMO), In-band Full Duplex, On-Orthogonal Multiple Access (NOMA), Ultra-Wideband ( Various technologies such as super wideband support and device networking have been studied.

[Detailed Description of the Invention] [Technical problem]

An object of the present specification is to provide a method of newly defining CP lengths in consideration of timing alignment between numerologies having different CP overheads.

In addition, an object of the present disclosure is to provide a method of newly defining a CP length in consideration of symbol boundary alignment between different numerologies having the same CP overhead.

That is, an object of the present specification is to provide a method for matching symbol boundaries, slot boundaries, and subframe boundaries between different radio frame structures according to subcarrier spacing.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

Technical Solution

Herein is the control information related to the method that is a method for transmitting and receiving signals in a wireless communication system, carried out by a terminal, a wireless frame structure (radio f rame structure) ¾ ^■ subcarrier spacing (subcarrier spacing) to determine Receiving from a base station via higher layer signaling; And transmitting and receiving the signal with the base station through a first radio frame structure corresponding to a specific subcarrier interval based on the received control information, wherein the specific subcarrier interval is a reference. A first radio frame structure is defined based on a reference subcarrier spacing and a scaling factor, and the first radio frame structure uses the scaling factor for each symbol. It is characterized by scaling (scaling).

In the present specification, the reference subcarrier spacing is 15 kHz, and the reference radio frame structure is a wireless frame structure corresponding to the reference subcarrier spacing.

In addition, the specific subcarrier interval is characterized in that 15kHz, 30kHz, 60kHz, 120kHz, 240kHz or 480kHz.

In addition, in the present specification, the reference radio frame structure includes at least one first symbol having a cyclic length of 1 CP and at least one second symbol having a second CP length, wherein the first radio frame The structure is characterized in that the scaling is applied to each of the first symbol and the second symbol using the scaling factor.

Also, in the present specification, the radio frame structure is a normal CP structure, the first CP length is 160 samples, and the second CP length is ₁₄₄ samples.

Also, in the present specification, the first wireless frame structure includes at least one of a first type slot, a second type slot, a third type slot, a fourth type slot, or a fifth type slot, and includes the first wireless frame structure. The type of slot included may be determined according to the number of the first symbol or the second symbol. Also, in the present specification, the first type slot includes seven second symbols, the second type slot includes one first symbol and six second symbols, and the third type slot includes two second symbols. Including one symbols and five second symbols, wherein the fourth type slot includes four first symbols and three second symbols, and the fifth type slot includes seven first symbols. It features.

Also, in the present specification, the first radio frame structure may include at least one of a first type subframe, a second type subframe, a third type subframe, a fourth type subframe, a fifth type subframe, or a sixth type subframe. And a type of the subframe included in the first radio frame structure is determined according to the type of the slot included in the subframe.

In addition, in the present specification, the types of slots included in the subframes are the same or different from each other.

Also, in the present specification, the first type subframe includes two second type slots, and the second type subframe includes one third type slot and one first type slot, and the third type. The subframe includes one fourth type slot and one first type slot, wherein the fourth type subframe includes two first type slots, and the fifth type subframe includes one fourth type slot. And one second type slot, wherein the sixth type subframe includes two fifth type slots.

In addition, in the present specification, the radio frame structure includes the number of symbols, the number of slots and the number of symbols included in the radio frame structure according to the subcarrier spacing. The number of subframes is determined.

Also, in the present specification, when the radio frame structure is an extended CP structure, the symbols included in the radio frame structure may include a first type symbol, a second type symbol, a third type symbol, a fourth type symbol, and a fifth. At least one of the type symbol and the sixth type symbol.

Also, in the present specification, the first radio frame structure is 0. The specific symbol structure is repeated in 5ms or lms units.

In addition, the subcarrier spacing is characterized in that it is determined based on the range of the carrier frequency (carrier frequency).

In addition, the range of the carrier frequency in the present specification is 6GHZ or less (below), 6GHz or more (above) to 30GHz or less (below) or 30GHz or more (above) is characterized in that.

In addition, the present specification is a terminal for transmitting and receiving a signal in a wireless communication system, RF (Radio Frequency) unit for transmitting and receiving a wireless signal; And a processor for controlling the RF unit, wherein the processor is configured to transmit control information related to subcarrier spacing for determining a radio frame structure through higher layer signaling. Receive from; And controlling to transmit and receive the signal with the base station through a first radio frame structure corresponding to a specific subcarrier interval based on the received control information, wherein the specific subcarrier interval is a reference subcarrier spacing and The first radio frame structure is defined based on a scaling factor. A reference radio frame structure is characterized by scaling by using the scaling factor for each symbol.

Advantageous Effects

The present specification newly defines a CP length of a symbol in a radio frame used in NR, thereby matching timing between numerologies having different CP overheads or between different numerologies having the same CP overhead. ) Is effective.

Effects obtained in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. [Brief Description of Drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, included as part of the detailed description in order to provide a thorough understanding of the present invention, provide embodiments of the present invention and together with the description, describe the technical features of the present invention.

1 illustrates a structure of a radio frame in a wireless communication system to which the present invention can be applied.

FIG. 2 is a diagram illustrating a resource grid for one downlink slot in a wireless communication system to which the present invention can be applied.

3 shows a structure of a downlink subframe in a wireless communication system to which the present invention can be applied.

4 illustrates an uplink sub in a wireless communication system to which an embodiment of the present invention may be applied. Represents the structure of a frame.

5 is a diagram illustrating an example of a slot structure to which the method proposed in the present specification can be applied.

6 illustrates an example of subcarrier spacing in an LTE system.

7 illustrates an example in which symbol boundaries do not coincide between different numerologies.

8 illustrates an example of symbol boundary matching between numerologies having different subcarrier spacings proposed in the present specification.

FIG. 9 is a diagram illustrating an example of symbol boundary matching between numerologies that can be extended to various subcarrier intervals proposed in the present specification.

10 shows an example of a slot structure and a subframe structure proposed in the present specification.

11 shows another example of a slot structure and a subframe structure proposed in the present specification.

12 is a diagram illustrating an example of scalable numerology proposed in the present specification.

13 is a diagram illustrating an example of slot boundary matching between 60 kHz nCP and 60 kHz eCP proposed in the present specification.

14 is a flowchart illustrating an example of a method of transmitting and receiving a signal using numerology proposed in the present specification.

15 illustrates a block diagram of a wireless communication device to which the present invention can be applied. [Mode for Invention and Implementation]

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The detailed description, which will be given below with reference to the accompanying drawings, is intended to explain exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, one of ordinary skill in the art appreciates that the present invention may be practiced without these specific details.

In some instances, well-known structures and devices may be omitted or shown in block diagram form centering on the core functions of the structures and devices in order to avoid obscuring the concepts of the present invention.

In this specification, a base station has a meaning as a terminal node of a network that directly communicates with a terminal. Certain operations described as being performed by the base station in this document may be performed by an upper node of the base station in some cases. That is, it is apparent that various operations performed for communication with a terminal in a network including a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station. A base station (BS) may be replaced by terms such as a fixed station, a Node B, an evolved-NodeB (eNB), a base transceiver system (BTS), and an access point (AP). . In addition, a 'terminal' may be fixed or mobile, and may include a user equipment (UE), a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), and a subscriber (SS). Station, Advanced Mobile Station (AMS), Wireless Terminal (WT), Machine-Type Communication (MTC) Device, Machine-to-Machine (M2M) Device, Device-to-Device (D2D) Device Can be.

Hereinafter, downlink (DL) means communication from a base station to a terminal, and uplink (UL) means communication from a terminal to a base station. In downlink, a transmitter may be part of a base station, and a receiver may be part of a terminal. In uplink, a transmitter may be part of a terminal and a receiver may be part of a base station. Specific terms used in the following description are provided to help the understanding of the present invention, and the use of such specific terms may be changed to other forms without departing from the technical spirit of the present invention.

The following techniques are code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and NOMA It can be used in various radio access systems such as non-orthogonal multiple access. CDMA is a radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. Can be implemented. TDMA may be implemented with a wireless technology such as global system for mobile communications (GSM) / general packet radio service (GPRS) / enhanced data rates for GSM evolution (EDGE). OFDMA is a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (iMAX), IEEE 802-20, and evolved UTRA (E-UTRA). Can be implemented. . UTRA is part of a universal mobile telecommunications system (UMTS). 3rd generation partnership protocol (3GPP) long term evolution (LTE) is part of E-UMTS (evolved UMTS) using E-UTRA, which employs OFDMA in downlink and SC-FDMA in uplink. LTE—A (advanced) is the evolution of 3GPP LTE.

Embodiments of the present invention may be supported by standard documents disclosed in at least one of the wireless access systems IEEE 802, 3GPP and 3GPP2. That is, steps or parts which are not described to clearly reveal the technical spirit of the present invention among the embodiments of the present invention may be supported by the above documents. In addition, all terms disclosed in the present document can be described by the above standard document.

For clarity, the following description focuses on 3GPP LTE / LTE-A, but the technical features of the present invention are not limited thereto. General wireless communication system to which the present invention can be applied

3GPP LTE / LTE-A supports a type 1 radio frame structure applicable to FDD (frequency division duplex) and a type 2 radio frame structure applicable to time division duplex (TDD).

In FIG. 1, the size in the time domain of a radio frame is expressed as a multiple of a time unit of T—s = l / (15000 * 2048). Downlink and uplink transmission consists of a radio frame having a period of T f = 307 200 * T s = 10 ms. 1A illustrates the structure of a type 1 radio frame. Type 1 radio frames can be applied to both full duplex and half duplex FDD.

A radio frame consists of 10 subframes. One radio frame consists of 20 slots having a length of T_slot = 15360 * T_s = 0.5ms, and each slot is indexed from 0 to 19. One subframe consists of two consecutive slots in the time domain, and subframe i consists of slot 2i and slot 2i + l. The time taken to transmit one subframe is called a transmission time interval (TTI). For example, one subframe may have a length of 1 ms and one slot may have a length of 0.5 ms.

In FDD, uplink transmission and downlink transmission are distinguished in the frequency domain. While there is no restriction on full-duplex FDD, the terminal cannot simultaneously transmit and receive in half-duplex FDD operation.

One slot includes a plurality of resource blocks in the frequency domain comprises a plurality of OFDM (orthogonal frequency division multiplexing) symbols in the time _domain: include (RB Resource Block). Since 3GPP LTE uses OFDMA in downlink, the OFDM symbol is for representing one symbol period. An OFDM symbol may be referred to as one SC— FDMA symbol or a symbol period. A resource block is a resource allocation unit and includes a plurality of consecutive subcarriers in one slot.

(B) of FIG. 1 shows a frame structure type 2 Indicates.

The type 2 radio frame consists of two half frames each 153600 * T_s = 5ms in length. Each half frame consists of five subframes of length 30720 * T— s = lms.

Uplink-downlink configuration ^ in a type 2 frame structure of a TDD system: A rule indicating whether uplink and downlink are allocated (or reserved) for all subframes.

Table 1 shows an uplink-downlink configuration.

Table 1

For reference, for each subframe of a radio frame, denotes a subframe for downlink transmission, 'U' denotes a subframe for uplink transmission, and 'S' denotes a DwPTS (Downlink Pilot Time Slot) and a guard interval. (GP: Guard Period), UpPTS (Uplink Pilot Time Slot) Indicates a special subframe consisting of three fields.

DwPTS is used for initial cell search, synchronization or channel estimation at the terminal. UpPTS is used to synchronize the channel estimation at the base station with the uplink transmission synchronization of the terminal. Used. GP is a section for removing interference caused by the uplink due to the multipath delay of the downlink signal between the uplink and the downlink.

Each subframe i contains each T— slot = 15360 * T_s = 0. It consists of slot 2 i and slot 2 i + l of 5 ms length.

The uplink-downlink configuration can be classified into seven types, and the location and / or number of downlink subframes, special subframes, and uplink subframes are different for each configuration.

The point of time from the downlink to the uplink or the time from the uplink to the downlink is called a switching point. Switch-point periodicity refers to a cycle in which an uplink subframe and a downlink subframe are repeatedly switched in the same manner, and both 5ms or 10ms are supported. The special subframe S exists every half-frame when there is a period of 5ms downlink-uplink switching, and only in the first half-frame when it has a period of 5ms downlink-uplink switching. In all configurations, subframes 0 and 5 and DwPTS are sections for downlink transmission only. The subframe immediately following the UpPTS and the subframe subframe is always an interval for uplink transmission.

The uplink-downlink configuration may be known to both the base station and the terminal as system information. When the uplink-downlink configuration information is changed, the base station may notify the terminal of the change of the uplink-downlink allocation state of the radio frame by transmitting only an index of the configuration information. In addition, the configuration information is a kind of downlink control information and like the other scheduling information, physical downlink (PDCCH) It may be transmitted through a control channel, and may be commonly transmitted to all terminals in a cell through broadcast channels as broadcast information.

Table 2 shows the configuration of the special subframe (length of DwPTS / GP / UpPTS).

[Table 2]

The structure of a radio frame according to the example of FIG. 1 is just one example, and the number of subcarriers included in the radio frame or the number of slots included in the subframe and the number of OFDM symbols included in the slot may vary. Can be.

Next, the frame structure type 3 will be described. The frame structure type 3 can be applied to the operation of a LAA secondary cell having only a normal cyclic prefix. Each radio frame has a length r _f = ³ 0 ⁷² 00'r _s = 10 m _S , 7 _lol = l ⁵³⁶ 0'T _s = 0 'It consists of ₂₀ slots ₍₀ to ₁₉ ) with ⁵ _mS .

One subframe is defined as two consecutive slots, where subframe i is composed of slot 2i and slot 2i + l.

Ten subframes within one radio frame are available for downlink or uplink transmission.

The downlink transmission occupies one or more consecutive subframes, starts anywhere within the subframe, and ends with the last subframe that has fully occupied or followed one of the DWPTS durations.

Uplink transmission occupies one or more consecutive subframes. FIG. 2 is a diagram illustrating a resource grid for one downlink slot in a wireless communication system to which the present invention can be applied.

Referring to FIG. 2, one downlink slot includes a plurality of OFDM symbols in the time domain. Here, one downlink slot includes seven OFDM symbols, and one resource block includes 12 subcarriers in a frequency domain, but is not limited thereto.

Each element on the resource grid is a resource element, and one resource block (RB: resource block) includes 12 × 7 resource elements. The number of resource blocks included in the downlink slot depends on the downlink transmission bandwidth.

The structure of the uplink slot may be the same as the structure of the downlink slot. 3 shows a structure of a downlink subframe in a wireless communication system to which the present invention can be applied.

Referring to FIG. 3, up to three OFDM symbols in the first slot in a subframe are control regions to which control channels are allocated, and the remaining OFDM symbols are data regions to which a Physical Downlink Shared Channel (PDSCH) is allocated. data region). Examples of the downlink control channel used in 3GPP LTE include a PCFICH (Physical Control Format Indicator Channel), PDCCH (Physical Downlink Control Channel), PHICH (Physical Hybrid-ARQ Indicator Channel).

The PCFICH is transmitted in the first OFDM symbol of a subframe and carries information about the number of OFDM symbols (ie, the size of the control region) used for transmission of control channels within the subframe. PHICH is a male answer channel for the uplink, and a PHICH for the HARQ (Hybrid Automatic Repeat Request)

Carries ACK (Acknowledgement) / NACK (Not-Acknowledgement) signals. Control information transmitted through the PDCCH is called downlink control information (DCI). The downlink control information includes uplink resource allocation information, downlink resource allocation information or an uplink transmission (Tx) power control command for a certain terminal group.

The PDCCH is a resource allocation and transmission format of DL-SCH (Downlink Shared Channel) (also called a downlink grant), resource allocation information of UL-SCH (Uplink Shared Channel) (also called an uplink grant), and a PCH ( Paging Information on Paging Channel, DL—System on SCH Information, resource allocation for upper-layer control messages such as random access response transmitted in PDSCH, a set of transmit power control commands for individual terminals in any terminal group, VoIP (Voice) over IP) activation. The plurality of PDCCHs may be transmitted in the control region, and the terminal may monitor the plurality of PDCCHs. The PDCCH consists of a set of one or a plurality of consecutive CCEs. CCE is a logical allocation unit used to provide a PDCCH with a coding rate according to the state of a radio channel. The CCE is referred to a plurality of resource element groups. Format and Time of PDCCH The number of available PDCCH bits is determined according to the association between the number of CCEs and the coding rate provided by the CCEs.

The base station determines the PDCCH format according to the DCI to be transmitted to the terminal, and attaches a CRC (Cyclic Redundancy Check) to the control information. The CRC is masked with a unique identifier (referred to as RNTI (Radio Network Temporary Identifier)) according to the owner or purpose of the PDCCH. If the PDCCH for a specific terminal may be masked to the unique identifier of the terminal, for example, C-RNTI (Cell—RNTI) 7 CRC. Alternatively, if the PDCCH is for a paging message, a paging indication identifier, eg, P_RNTI (Paging-RNTI), may be masked to the CRC. In the case of PDCCH for system information, more specifically, a system information block (SIB), a buy 1 system information identifier and a system information RNTI (SI-RNTI) may be masked to the CRC. RA-RNTI (random access-) to indicate a random access response that is a response to transmission of the random access preamble of the UE. RNTI) may be masked to the CRC. 4 shows a structure of an uplink subframe in a wireless communication system to which the present invention can be applied.

Referring to FIG. 4, an uplink subframe may be divided into a control region and a data region in the frequency domain. A physical uplink control channel (PUCCH) carrying uplink control information is allocated to the control region. The data area is allocated a PUSCH (Physical Uplink Shared Channel) carrying user data. In order to maintain a single carrier characteristic, one UE does not simultaneously transmit a PUCCH and a PUSCH.

A PUCCH for one UE is allocated a resource block (RB) pair in a subframe. RBs belonging to the RB pair occupy different subcarriers in each of the two slots. This RB pair allocated to the PUCCH is said to be frequency hopping at the slot boundary (slot boundary). 5 is a diagram illustrating an example of a slot structure to which the method proposed in the present specification can be applied.

As shown in FIG. 5, one slot includes seven symbols, and each symbol is separated by an OFDM cyclic prefix (CP). Extended CP with six symbols in one slot exists for very large cells or MBSFN (Multicast Broadcast Single Frequency Network) transmission. Numerology

Flexible bandwidth allocation supported by OFDM

Sampling rate is multiple of 3.84 MHz single clock for multi-mode UE with WCDMA.

In this specification, numerology means a numerical value or a value or a parameter defined in a system, and different systems may be interpreted as having different numerology.

Also, one system may have different numerology.

For example, the numerology of the LTE system representing 4G and the numerology of the NR system representing 5G may be different.

Table 3 below shows an example of the overall LTE numerology.

Each numerical value, a set of numerical values, etc. in Table 3 can be called numerology.

Table 3

Sub-carrier spacing

6 illustrates an example of subcarrier spacing in an LTE system.

As shown in FIG. 6, the LTE system supports subcarrier spacing of 15 kHz and supports 7. 5kHz reduced subcarrier spacing is also supported.

Center subcarrier or DC subcarrier: The carrier is not used to allow direct conversion receiver implementation. Hereinafter, a method and a radio frame structure for matching a symbol or subframe boundary between different numerologies in consideration of at least one of CP length, subcarrier spacing, or CP overhead proposed in the present specification will be described.

The NR (ew-RA) standardization currently underway in 3GPP includes a variety of use cases (e.g. enhanced mobile broadband (EMBB), massive machine type communications (MMTC), ultra-reliable and low latency communications (URLLC)) Considering the frequency band (0.5-100 GHz) is proceeding.

Accordingly, standardization of NR meets the above various requirements. Various numbers (numeiOlogy) are considered to satisfy.

One of these methods is to extend the numerology * of NR by scaling the existing LTE number by the amount of change in subcarrier spacing.

For example, if the subcarrier spacing is quadrupled (15kHz-> 60kHz), the new numerology is defined by scaling the LTE numerology by four times. Table 4 below shows an example of a New-RAT numeric set.

Table 4 shows an example of the minimum supported numerology set in NR.

Table 4

Below 6 GHz Above 6 GHz and Above 30 GHz

Below 30 GHz

eMBB ： 15 kHz NCP, 60 kHz NCP, 120 kHz NCP 60 kHz NCP, 120 kHz

30 kHz NCP NCP, FFS on 240 kHz

URLLC 30 kHz NCP 60 Support 1, eMBB case If supported, similar to eMBB kHz NCP / ECP case

(If supported, similar (If supported,

to eMBB case) similar to eMBB

case)

mMTC 3 ᅳ 75 kHz NCP, FFS FFS

15 kHz NCP MBMS 1.875 kHz FFS FFS

ECP, 15 kHz

ECP

In Table 4, NCP stands for Normal CP (Cyclic Prefix).

As shown in Table 4, the method of simply scaling and extending the existing LTE numerology (when every symbol is linearly scaled as it is) causes a problem in that symbol boundary alignment between different numerologies cannot be guaranteed.

This is because the existing LTE numerology defines symbols having different CP lengths in one subframe. 7 illustrates an example in which symbol boundaries do not coincide between different numerologies.

That is, FIG. 7 illustrates an example of symbol misalignment between different numerologies when LTE numerology is scaled by the amount of subcarrier spacing variation.

Referring to FIG. 7, when the subcarrier spacing (15 kHz) of the LTE system and the subcarrier spacing of the NR are equal to 15 kHz, symbol boundary alig nt nt is performed between different numerology (LTE radio frame and NR radio frame).

However, when the NR subcarrier spacing is scaled to 30 kHz, 60 kHz, and 75 kHz, the symbol boundaries do not match between the numerologies. have.

As shown in FIG. 7, when symbol boundary misalignment occurs between different numerologies, interference between numerologies may occur.

In case of matching symbol boundaries between different numerologies, the following advantages (1) to (3) occur.

(1) It is possible to reduce interference between different NR numerologies within the same NR carrier bandwidth.

(2) In the scenario where LTE and NR coexist (LTE-NR co-existence scenario), interference between numerology can be reduced.

(3) can increase efficiency during multiplexing between different numerology

Λλ ㅁ ·

As used herein, different numerology 'may be interpreted to include the concept of a radio frame, a system, or the like having a different structure. In the foregoing description, it is assumed that symbol boundaries between different numerologies having the same CP length are aligned.

However, timing alignment between numerologies with different CP lengths also needs to be considered.

Here, the timing coincidence may mean symbol boundary matching, subframe boundary matching, radio frame boundary matching, and the like. For example, in the existing LTE system, slot boundary alignment is performed between a normal CP numerology having an extended CP length and an extended CP numerology.

Salping FIG. 5 illustrates that slot boundaries between numerologies having different CP lengths (normal CP and extended CP) in the LTE system coincide. Hereinafter, a method of defining a length of CP for timing alignment between numerologies having different CP overheads proposed in the present specification will be described.

The CP overhead refers to a ratio occupied by CP per specific time unit. For example, the CP overhead may indicate a ratio occupied by CP per one slot.

In addition, the method of defining the length of CP in consideration of symbol boundary alignment between different numerologies having the same CP overhead * will be described.

(First embodiment)

The first embodiment relates to a method of defining a length of CP for symbol boundary alignment between numerologies having the same CP overhead with different subcarrier spacings.

In the first embodiment, the existing LTE numerology may be extended by scaling the same by an increase of subcarrier spacing compared to 15 kHz. In this case, the first embodiment uses the same CP as described below. This guarantees the symbol boundary alignment between the numerologies with different subcarrier spacing of overhead.

(1) Method 1

Method 1 is a method of applying scaling for each reference numerology ^ symbol.

Here, as shown in FIG. 8, the reference numerology symbol may include symbol 0 having a CP length of 5.208us (160 samples) and symbol 1 having a CP length of 4.688us (144 samples).

That is, in Method 1, scaling is applied to each of OFDM symbol structures having different CP lengths in numerology having the same CP overhead.

More specifically, as shown in FIG. 8, the normal CP may apply a structure 810 to which symbol level alignment is applied based on a 15 kHz NCP to the NCP 820 of each subcarrier spacing.

That is, FIG. 8 shows that a symbol level alignment is performed on a numerology (or a radio frame structure) having a subcarrier spacing of 15 kHz by scaling a numerology (or a radio frame structure) having a subcarrier spacing of 60 kHz for each symbol. Indicates.

In addition, in extended CP, the subcarrier spacing to be one may not be 15 kHz.

For example, the first subcarrier spacing may be the largest subcarrier spacing that can be used in each carrier, such as 60 kHz or 480 kHz. Alternatively, the subcarrier spacing performed by the extended CP may be a value set for each band or frequency region or may be known through higher layer signaling such as RRC signaling.

That is, FIG. 8 shows that a symbol boundary of numerology having a subcarrier spacing of 15 kHz and a numerology having a subcarrier spacing of 60 kHz coincide.

In FIG. 8, symbol 0, symbol 1, slot 0, slot 1, subframing 0, and subframe 1 mean different symbol structures, different slot structures, and different subframe structures, respectively.

At this time, Symbol 0 'and Symbol 1' represent each symbol structure having different CP lengths in reference numerology as described above.

That is, when a numer with subcarrier spacing with different NRs extends to ogy (or when extending to a radio frame structure with different subcarrier spacings), the new numerology is symbol 0 'and ^ Symbol 1', respectively. Scaling can be applied to guarantee symbol boundary alignment between numerologies with different subcarrier spacings. FIG. 9 is a diagram illustrating an example of symbol boundary matching between numerologies that can be extended to various subcarrier intervals proposed in the present specification. That is, FIG. 9 shows that symbol boundaries between radio frames (or numerologies) having different subcarrier spacings coincide. When the numerology is extended by using Method 1 (symbol boundary matching between numerologies through scaling of each symbol), symbols in slots may have different CP lengths.

Therefore, when numerology is extended through the method 1, subframe duration and slot duration may be defined differently within the same numerology.

Method 2 to be described later defines numerology for different subframe structures and slot structures, and provides an efficient multiplexing method among various numerologies.

(2) Method 2

Method 2 relates to a method of defining a slot structure applicable to NR according to different symbol structures included in one slot.

Here, different symbol structures (or symbols having different structures) may mean symbs having different CP lengths.

In addition, Method 2 defines a subframe structure applicable to the NR according to different slot structures.

10, 11 and Table 5 show an example of a slot structure and a subframe structure proposed in the present specification.

Specifically, FIG. 10 shows an example of a slot structure applicable in NR, 11 shows an example of a subframe structure applicable to NR.

The following table 6 shows a Table 5, at 10 and a scalable numerology LTE numerology based on the basis of the 11 different environment for the numerology of each subcarrier spacing and slot structure ^'subf rame structure.

An example of a slot structure and a subframe structure according to subcarrier spacing is shown.

Table 7 shows the sequence of slot structures constituting each numerology for numerologies having different subcarrier spacings.

Γ 2nd implementation j | )

The second embodiment relates to a method of defining a CP length in consideration of timing alignment between numerologies of different CP overheads having the same subcarrier spacing.

That is, the second embodiment of the invention between numerology having different CP overhead It also provides a way to define CP length for timing alignment. Hereinafter, for convenience of description, a CP overhead of one embodiment is defined as a normal CP (nCP), and an environment having a CP overhead larger than nCP will be defined as an extended CP (eCP).

In addition, to ensure various timing alignment scenarios between numerols of different CP overheads, eCP numerology is defined as follows.

(1) suggestion 1

Proposal 1 is a method of defining different eCP slot structures according to the slot structure proposed in Method 2 of the first embodiment.

That is, the first proposal is to define each eCP slot structure for a different nCP slot structure.

(2) proposal 2

Proposal 2 is a method for defining another eCP subframing structure according to the subframing structure 1 proposed in ¾ ^" method 2 of the first embodiment.

That is, proposal 2 defines each eCP subframe structure for different nCP subframe structures.

(3) Proposal 3

3 is a proposed method for the eCP numer ^'for different subcarrier spacing by applying the method of the first embodiment 1, based on the specific numerology eCP define ᄋ gy.

In this case, the specific eCP numerology is 0. Same on 5ms or 1ms basis Repeat the structure. Slot Boundary Alignment

First, the eCP numerology definition according to Proposal 1 can ensure slot boundary alignment as follows.

(1) Slot boundary alignment between eCP numerology with different subcarrier spacing

(2) Slot boundary alignment between nCP-eCP numerologies with different subcarrier spacings or the same subcarrier spacing

(3) However, symbol boundary misalignment between eCP numerology having different subcarrier spacings Table 8 below shows an example of defining an eCP slot structure mapped to each nCP slot structure using Proposal 1 above.

That is, Table 8 shows an example of an eCP slot structure for matching a slot boundary between eCP numerologies.

Table 8

In Table 8, _，，， e ^^ '。， ^ ⁷ ! ^, ^ ^ Are the number of samples of the _{nCP s} iot structure, the number of data symbols in the slot structure, the number of long CPs in the slot structure, the FFT size of the data symb, FFT size of long CP, meaning the FFT size of short CP. As shown in Table 8, when the subcarrier spacing of the ECP is the same for the subcarrier spacing of the corresponding NCP, it means that the symbol position of the ECP coincides with the symbol position of the NCP.

However, when using this method, NCP and ECP having the same subcarrier spacing can be aligned in the slot, but it is difficult to align at symbol level with numerology having other subcarrier spacing using ECP.

For example, the 15 kHz ECP may be configured as slot 1 including six symbols (eSyml) having the same CP to align with the 15 kHz NCP.

In addition, the 30 kHz ECP can be configured to align to slot 2, slot 0, slot 2, slot 0 to align with the 30 kHz NCP.

In this case, however, symbol level alignment between the 30 kHz ECP and the 15 kHz ECP becomes difficult.

In other words, the Salping proposal 1 may be used for slot level alignment of CP o verheads between numerologies having the same subcarrier spacing, but may be difficult to apply to symbol level alignment between numerologies of the same CP overhead (subcarrier spacing ⁰ ). Sub frame boundary alignment

Next, the definition of eCP numerology according to Proposition 2 can ensure the following subframing boundary alignment. (1) Subframe boundary alignment between eCP numerologies with different subcarrier spacings

(2) Subframe boundary alignment between nCP-eCP numerologies with different subcarrier spacings or the same subcarrier spacing

(3) However, symbol boundary misalignment between eCP numerology having different subcarrier spacings Table 9 below shows an example of defining an eCP subframe structure mapped to each nCP subframe structure using proposal 2.

That is, Table 9 shows an example of defining an eCP subframe structure for matching the subframe boundaries.

3SymO <ttl) A ../ eSymO (# 5)

[Case 2]

11+ (2048 + 736) + 4 * (752-736)

eSym4 (# 0) / eSym4 (# 1) /·../ eSym4 (# 3) / eSym3 (# 0) /

2Sym3 (# 1) 八 .. / eSyrn3 (#S)

[Case 1]

13 * (2048 + 320) + 2 * (336-320)

eSym2 / eSym2 / eSyml (# 0) / eSyml (#: A ../ eSyml (# 10)

[Case 2]

11 * (2048 + 752) + 1 * (768-752)

eSym5 / eSym4 (# 0) / eSym4 (#l) ./ eSym4 (# 9)

[Case 1]

13 * (2048 + 320) + 8 * (336-320)

eSym2 (# 0) / eS m2 (# 1) /.../ eSym2 (# 7) / eSyml (# 0) / eSymKttl) /.../ eSyml (# 4)

(Case 2)

11 * (2048 + 752) + 7 * (768-752)

eSymS (# 0) / eSymS (ttl) /.../ eSym (# 6) / eSym4 / eSym4 / eSym4 / eSym4

1.NsSSP ⁼

-FFT _SCP )

2. Case 1 ： Consider 13 OFDM data symbols in one sub frame

3. Case 2: Consider 11 OFDM data symbols in one sub frame

4.eSymO ： Symbol that has 304 -point CP length (assume

30.72 * a MHz)

ESyral ： Symbol that has 320-point CP length (assume

30.72 * a MHz)

6.eSym2 ： Symbol that has 336-point CP length (as sume

30.72 * a MHz)

ESyra 3: Symbol that has 736— point CP length (assume

30.72 * a MHz)

8 ᅳ eSym4 ： Symbol that has 752 -point CP length (assume

30.72 * a MHz)

9.eSym5 ： Symbol that has 768 -point CP length (assume

30.72 * a MHz)

10 a: a single scaling factor (scaling factor for different subcarrier spacing) the same manner as in Table 9 for different sub-carrier spacing is equally subcarrier align ^0] between the spacing of the slot level alignment, the CP overhead equals the subcarrier spacing Symbol level between different numerology The disadvantage is that alignment is not possible.

0.5 ms or lms boundary alignment

The definition of eCP numerology according to Proposal 3 can guarantee 0.5 ms or Iras boundary alignment.

In addition, unlike the Salpin proposals 1 and 2 above, the proposal 3 may also guarantee symbol boundary-alignment between eCP numerologies having different subcarrier spacings.

Tables 10 and 11 below show examples of specific eCP numerology ≤ 1 where 0.5 ms and lms boundary matching is satisfied, respectively.

Specifically, Table 10 shows an example of a reference numer gy for scalable eCP numerology that satisfies 0.5 ms boundary alignment.

Table 11 also shows the reference for scalable eCP numerology that satisfies lms boundary alignment 7. An example of n 'rology is shown.

FIG. 12 is a diagram illustrating an example of scalable numerology extended by applying the reference numerology of Table 11 and Proposal 3 of the second embodiment.

12A and 12B show an example of symbol boundary matching between numerologies having different subcarrier spacings in eCP numerology. 12A illustrates a wireless frame structure including eSymO and eSyml, and FIG. 12B illustrates a wireless frame structure including eSym2 and eSym3.

As shown in FIG. 12, it can be seen that each symbol has a different CP length.

As described above, when defining different eCP numerology according to the proposal 3, there is an advantage that can secure the symbol boundary alignment between different eCP numerology.

(4) Proposal 4

Proposition 4, unlike the Salping proposal 3 earlier, is 0 for every subcarrier spacing if it is not necessary to ensure symbol boundary alignment. A method of defining numerology using a suitable number of symbols of a 5 ms or lms boundary.

That is, proposal 4 is 0 according to the subcarrier spacing that defines a particular numerology. Define a symbol structure that is repeated based on 5ms or lms.

Table 12 shows an example of defining nCP numerology ^ eCP numerol gy by applying proposal 4 to numerology 1 having a subcarrier spacing of 60 kHz.

30.72 * a MHz)

ESym5: Symbol that has 624 -point CP length (assume 30.72 * a MHz)

8.a ： scaling factor for different subcarrier spacing

(5) Proposal 5

Proposition 5 describes the largest subcarrier spacing used in a carrier, band, or frequency region as SCmax, the NCP of SCmax and. It is a method to assume slot level or subframe level alignment in ECP!

That is, the GA 5 assumes another subcarrier spacing in the ECP! ”This assumes symbol level alignment based on SCmax.

In this case, slot level alignment is possible for each SCi <NCP and ECP person of SCmax].

For example, assuming 480 kHz is the largest subcarrier spacing, in consideration of symbol level alignment between numerologies of NCP, a slot format may be configured as follows in lms.

"Slot4 / Slot4 / Slot4 / Slot4 / Slot3 / Slot0 (# 0) / Slot0 (#l) /

... Slot0 (# 26) / Slot4 / Slot4 / Slot4 / Slot4 / Slot3 / Slot0 (# 0) / Slot0 (#l) / ... Slot0 (# 26) "

That is, proposal 5 configures ECP 480 kHz for each slot as above. Based on ECP 240 kHz, ECP 120 kHz,. . . . ECP 15 kHz can be configured. In this case, slot level alignment is possible when the subcarrier spacing of each NCP and ECP is the same.

Further, it is possible to match the NCP and if the ECP having a different subcarrier spacing, slot level align the subcarrier spacing ^0] less numerology based.

Here, if there is a third (third) CP overhead family, the alignment between the NCP overhead family and the third CP overhead family can be made in this way.

However, the NCP, ECP and third CP overhead families may not be aligned. In addition, when the other CP overhead family is defined so that numerology and slot level alignment of the other CP overhead is needed, a new (or necessary) numerology family needs to be defined.

Also, it may be considered that the other CP overhead family is basically aligned with the normal CP overhead family.

If a new (or required) numerology family is not defined, the earlier salping (of the second embodiment) suggests lms or 0. You can also consider alignment 1-based 5 ms. In this case, alignment between different numers can be difficult.

In this case, the subcarrier spacing starting from the base can be determined. Here, the starting subcarrier spacing may be referred to as a reference subcarrier spacing.

Accordingly, symbol level alignment is performed based on the starting subcarrier spacing, and CP overhead, slot length, etc. for other subcarrier spacings can be determined. 13 is a diagram illustrating an example of slot boundary matching between 60 kHz nCP and 60 kHz eCP proposed in the present specification.

That is, FIG. 13 shows a case in which 60 kHz is defined as reference numerology (60 kHz nCP) according to Salping Proposal 5 above, and aligned at 60 kHz ECP and slot level based on this.

Here, numerology having subcarrier spacing greater than 60 kHz may not be slot level alignment when performing symbol level alignment in the ECP family.

Or, in this method, a reference subcarrier can be set to NCP and ECP for each carrier, frequency, and band, respectively.

In addition, the method determines a subframing structure, a symbol structure, and a slot structure based on a reference subcarrier corresponding to an NCP, and based on this, an NCP family of other subcarrier spacings may be created.

Similarly, assuming that the NCP and the slot level or subframing level al ignment is based on the reference subcarrier for the ECP, the subframing structure, symbol structure and slot structure can be defined.

In addition, an ECP family of other subcarrier spacings may be created through symbol level alignment based on the predetermined structure.

The same approach can be applied to other third CP overhead families.

For example, the reference numerology / subcarrier spacing for NCP may be 60 kHz ', the ECP may be 80 kHz' ¾, or the NCP may be 15 kHz ', the ECP may be 60 kHz', or the NCP may be 15 kHz 'and the ECP may be 480 kHz'. 14 is a flowchart illustrating an example of a method of transmitting and receiving a signal using numerology proposed in the present specification.

First, the terminal receives control information related to subcarrier spacing for determining a radio frame structure from the base station through higher layer signaling (S1410).

In the radio frame structure, the number of symbols, the number of slots, and the number of subframes included in the radio frame structure may be determined according to the subcarrier spacing.

Thereafter, the terminal transmits and receives the signal with the base station through a first radio frame structure corresponding to a specific subcarrier interval on the basis of the received control information (S1420). Here, a specific subcarrier spacing is defined based on a reference subcarrier spacing and a scaling factor.

Specifically, the specific subcarrier interval may be determined by the product of the reference subcarrier interval and the scaling factor.

The scaling factor may be previously expressed by salping, ₃ '.

The first radio frame structure may be generated by scaling a reference radio frame structure for each symbol by using the scaling factor.

The first radio frame structure means a radio frame structure defined in NR (New Rat) and may also be referred to as a / NR frame structure.

Specifically, the reference radio frame structure includes at least one first symbol having a first CP (Cyclic Prefix) length and at least one second symbol having a second CP length, and the first radio frame structure is the The scaling is applied using the scaling factor for each of the first symbol and the second symbol.

The reference subcarrier interval may be 15 kHz, and the reference radio frame structure may be a radio frame structure corresponding to the reference subcarrier interval.

The specific subcarrier interval may be 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or the like.

If the radio frame structure is a normal CP structure, the first CP length is 160 samples, and the second CP length is 144 pieces. Samples.

The first radio frame structure may include at least one of a first type slot, a second type slot, a third type slot, a fourth type slot, or a fifth type slot.

The type of slot included in the first radio frame structure may be determined according to the number of the first symbol or the second symbol.

The first type slot includes seven second symbols, the second type slot includes one first symbol and six second symbols, and the third type slot includes two first symbols. And five second symbols, wherein the fourth type slot includes four first symbols and three second symbols, and the fifth type slot may include seven first symbols.

The first wireless frame structure may include at least one of a first type subframe, a second type subframe, a third type subframe, a fourth type subframe, a fifth type subframe, or a sixth type subframe. Can be.

Here, the type of subframe included in the first radio frame structure may be determined according to the type of slot included in the subframe.

In addition, slot types included in the subframe may be the same or different from each other.

Specifically, the first type subframe includes two second type slots, and the second type subframe includes one third type slot and one first type slot, and the third type subframe. Includes one fourth type slot and one first type slot, wherein the fourth type subframe includes two first Type slots, wherein the fifth type subframe may include one fourth type slot and one second type slot, and the sixth type subframe may include two fifth type slots.

If the radio frame structure is an extended CP structure, the symbols included in the radio frame structure include a first type symbol, a second type symbol, a third type symbol, a fourth type symbol, a fifth type symbol, or a first symbol. It may be at least one of six type symbols.

Detailed descriptions of the symbol structure, the slot structure, and the subframe structure in the aforementioned NR frame will be described with reference to Tables 5 to 12.

In addition, in the first wireless frame structure, as shown in Table 10 and Table 11, a specific symbol structure may be repeated in units of 0.5 ms or lms.

In addition, the subcarrier spacing may be determined based on a range of carrier frequences, as shown in Table 4.

That is, the range of the carrier frequency may be 6 GHz or less (below), 6 GHz or more (above) to 30 GHz or less (below) or 30 GHz or more (above). General apparatus to which the present invention can be applied

15 illustrates a block diagram of a wireless communication device according to an embodiment of the present invention.

Referring to FIG. 15, a wireless communication system includes a base station 1510 and a plurality of terminals 1520 located in an area of a base station 1510.

Base station 1510 includes a processor (1511) and a memory (1512). And an RF unit (radio frequency unit) 1513. The processor 1511 implements the functions, processes, and / or methods proposed in FIGS. 1 to 14. Layers of the air interface protocol may be implemented by the processor 1511. The memory 1512 is connected to the processor 1511 and stores various information for driving the processor 1511. The RF unit 1513 is connected to the processor 1511 to transmit and / or receive a radio signal.

The terminal 1520 includes a processor 1521, a memory 1522, and an RF unit 1523. The processor 1521 implements the functions, processes, and / or methods proposed in FIGS. 1 to 14. Layers of the air interface protocol may be implemented by the processor 1521. The memory 1522 is connected to the processor 1521 and stores various information for driving the processor 1521. The RF unit 1523 is connected to the processor 1521 and transmits and / or receives a radio signal.

The memories 1512 and 1522 may be inside or outside the processors 1511 and 1521 and may be connected to the processors 1511 and 1521 by various well-known means. Also, the base station 1510 and / or the terminal 1520 may have a single antenna or multiple antennas.

The embodiments described above are the components and features of the present invention are combined in a predetermined form. Each component or feature is to be considered optional unless stated otherwise. Each component or feature may be embodied in a form that is not combined with other components or features. It is also possible to combine some of the components and / or features to form an embodiment of the invention. Of the present invention The order of the operations described in the embodiments may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. It is obvious that the claims may be combined to form an embodiment by combining claims that do not have an explicit citation relationship in the claims or as new claims by post-application correction.

Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of a hardware implementation, an embodiment of the present invention may include one or more ASICs (application specif ic integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (f ield programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above. The software code may be stored in memory and driven by the processor. The memory may be located inside or outside the processor, and may exchange data with the processor by any known means.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the essential features of the present invention. Accordingly, the above detailed description should not be construed as limited in terms of scarcity but should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, All changes within the equivalent scope of the invention are included in the scope of the invention.

Industrial Applicability

Although the present invention has been described with reference to examples applied to 3GPP systems and 5G systems, it is possible to apply to various wireless communication systems.

Claims

[Range of request]

[Claim 1]

In the method for transmitting and receiving signals in a wireless communication system, the method performed by a terminal,

Receiving control information related to subcarrier spacing for determining a radio frame structure from a base station through higher layer signaling; And transmitting and receiving the signal with the base station through a first radio frame structure corresponding to a specific subcarrier interval based on the received control information.

The specific subcarrier spacing is defined based on a reference subcarrier spacing and a scaling factor.

The first radio frame structure is characterized by scaling a reference radio frame structure for each symbol using the scaling factor.

[Claim 2]

The method of claim 1,

The reference subcarrier spacing is 15 kHz,

And the reference radio frame structure is a radio frame structure corresponding to the reference subcarrier interval.

[Claim 3]

The method of claim 2,

Wherein said particular subcarrier spacing is 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz or 480 kHz.

[Claim 4]

The method of claim 1,

The reference radio frame structure includes at least one first symbol having a length of 1 CP (Cyclic Prefix) and at least one second symbol having a second CP length,

And wherein the first radio frame structure applies the scaling to each of the first symbol and the second symbol using the scaling factor.

[Claim 5]

The method of claim 4, wherein

The radio frame structure is a normal CP structure,

Wherein the first CP length is 160 samples and the 2 CP length is 144 samples.

[Claim 6]

The method of claim 5,

The first radio frame structure includes at least one of a first type slot, a second type slot, a third type slot, a fourth type slot, or a fifth type slot, and a type of slot included in the first radio frame structure. Is the first symbol Or determined according to the number of the second symbols.

[Claim 7]

The method of claim 6,

The first type slot includes seven second symbols,

The second type slot includes one first symbol and six second symbols, the third type slot includes two first symbols and five second symbols,

The fourth type slot includes four first symbols and three second symbols.

And the fifth type slot includes seven first symbols.

[Claim 8]

The method of claim 7, wherein

The first radio frame structure includes at least one of a first type subframe, a second type subframe, a third type subframe, a fourth type subframe, a fifth type subframe, or a sixth type subframe,

And the type of subframe included in the first radio frame structure is determined according to the type of slot included in the subframe.

[Claim 9]

The method of claim 8,

And the types of slots included in the subframes are the same or different.

[Claim 10]

The method of claim 9,

The first type subframe includes two second type slots, the second type subframe includes one third type slot and one first type slot,

The third type subframe includes one fourth type slot and one first type slot.

The _fourth type subframe includes two first type slots, and the fifth type subframe includes one fourth type slot and one second type slot,

And the sixth type subframe includes two fifth type slots.

[Claim 11]

The method of claim 1,

The radio frame structure is characterized in that the number of symbols, the number of slots and the number of subframes included in the radio frame structure is determined according to the subcarrier spacing.

[Claim 12]

The method of claim 3, wherein

When the radio frame structure is an extended CP structure, the symbols included in the radio frame structure may be a first type symbol, a second type symbol, a crab type 3 symbol, a fourth type symbol, a fifth type symbol, or a sixth symbol. At least one of the type symbols Characterized in that the method.

[Claim 13]

The method of claim 3, wherein

The first radio frame structure is 0. Method characterized in that the specific symbol structure is repeated in 5ms or 1ms units.

[Claim 14]

The method according to claim 1,

Wherein the subcarrier spacing is determined based on a range of carrier frequences.

[Claim 15]

The method of claim 14,

The carrier frequency ranges from 6 GHz below, below 6 GHz above to below 30 GHz below or above 30 GHz above.

[Claim 16]

In the terminal for transmitting and receiving signals in a wireless communication system,

RF (Radio Frequency) unit for transmitting and receiving radio signals; And

And a processor for controlling the RF unit, wherein the processor is configured to transmit control information related to subcarrier spacing for determining a radio frame structure from a base station through higher layer signaling. Receive; And a first corresponding to a specific subcarrier interval based on the received control information. Control to transmit and receive the signal with the base station through a radio frame structure, wherein the specific subcarrier spacing is defined based on a reference subcarrier spacing and scaling ¾] ^ (scaling factor),

The system of claim 1, wherein the first radio frame structure scales a reference radio frame structure for each symbol by using the scaling factor.