Method and device for transmitting and receiving control information and data information in a wireless communication system

Abstract

To provide a method and a device therefor for effectively providing services in a wireless communication system.SOLUTION: An operating method for a terminal is provided in a wireless communication system. The operating method includes: receiving subcarrier spacing setting and cyclic prefix information from a base station via higher signaling; and determining a slot format of extended cyclic prefix based on a slot format of normal cyclic prefix, if the set subcarrier spacing is 60 kHz and the cyclic prefix information indicates the extended cyclic prefix.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a method and an apparatus for transmitting and receiving control information and data information in a wireless communication system. [Background technology]

[0002] After the commercialization of the 4G communication system, efforts are being made to develop an improved 5G communication system or pre-5G communication system to meet the increasing demand for wireless data traffic. For this reason, the 5G communication system or pre-5G communication system is called a Beyond 4G network communication system or a Post LTE (long-term evolution) system. In order to achieve high data transmission rates, the 5G communication system is being considered to be realized in the mmWave band (e.g., 60 GHz band). In order to mitigate the path loss of radio waves in the mmWave band and extend the transmission distance of radio waves, technologies such as beam forming, massive MIMO, full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, and large scale antenna are being discussed in the 5G communication system. In addition, to improve the system network, technologies such as advanced small cells, cloud radio access networks (cloud RAN), ultra-dense networks, device to device communication (D2D), wireless backhaul, moving networks, cooperative communication, coordinated multi-points (CoMP), and interference cancellation are being developed in the 5G communication system.In addition, advanced coding modulation (ACM) schemes such as hybrid FSK (frequency-shift keying) and QAM (quadrature amplitude modulation) and sliding window superposition coding (SWSC) as well as advanced access technologies such as filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) have been developed for 5G systems.

[0003] Meanwhile, the Internet is evolving into an Internet of Things (IoT) network that exchanges and processes information between distributed components such as things, in a human-centered connected network where humans generate and consume information. IoE (Internet of Everything) technology is also being provided, which combines big data processing technology through connection with cloud servers with IoT technology. To realize IoT, technological elements such as sensing technology, wired and wireless communication and network infrastructure, service interface technology, and security technology are required, and recently, technologies such as sensor networks for connecting things, machine to machine (M2M), and machine type communication (MTC) are being researched. In the IoT environment, intelligent IT (internet technology) services are being provided that collect and analyze data generated by connected things to create new value in human life. IoT will be applied to areas such as smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, healthcare, smart home appliances, and advanced medical services through the fusion and integration of existing IT (information technology) with various industries.

[0004] To this end, various attempts are being made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, machine to machine (M2M) and MTC are being embodied by 5G communication technologies such as beamforming, MIMO and array antennas. The application of cloud radio access network (cloud RAN) as a big data processing technology mentioned above is also an example of the fusion of 5G technology and IoT technology.

[0005] As described above, with the development of cordless communication systems, it has become possible to provide a variety of services, and therefore there is a demand for methods for providing such services effectively.

[0006] The preceding information is presented as background information only to aid in the understanding of the disclosure. No determination has been made or asserted as to whether any of the preceding is applicable as prior art to the present disclosure. Summary of the Invention [Means for solving the problem]

[0007] In a wireless communication system according to an embodiment of the present disclosure, a method for operating a terminal is provided, the method including: receiving subcarrier spacing configuration and cyclic prefix information from a base station through upper signaling; and, if the configured subcarrier spacing is 60 kHz and the cyclic prefix information indicates an extended cyclic prefix, determining a slot format of the extended cyclic prefix based on a slot format of a normal cyclic prefix. Effect of the Invention

[0008] According to an embodiment of the present disclosure, a method and an apparatus for effectively providing services in a wireless communication system can be provided. [Brief description of the drawings]

[0009] The foregoing and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings. [Figure 1] 1 is a diagram showing a time-frequency domain transmission structure, which is a downlink radio resource area of ​​LTE, LTE-A, or a similar system. [Diagram 2] 1 is a diagram showing a transmission structure of a time-frequency domain, which is an uplink radio resource domain of LTE, LTE-A, or a similar system. [Diagram 3] FIG. 2 is a block diagram illustrating a cyclic prefix transmission unit structure according to one embodiment. [Figure 4] 1 is a flowchart illustrating a method for transmitting and receiving control information and data information based on slot format indicator information reception in a terminal according to an embodiment. [Diagram 5] 1 is a flowchart illustrating a method for receiving a slot format indicator using cyclic prefix information in a terminal according to an embodiment. [Figure 6] 1 is a diagram illustrating downward control information and upward or downward data information resource allocation according to one embodiment. [Figure 7] 1 is a flowchart illustrating a method for interpreting a data time resource field of a downlink or uplink of a cyclic prefix information based terminal according to an embodiment. [Figure 8] 11 is a diagram illustrating a method of applying a slot format indicator according to another subcarrier spacing setting according to an embodiment. [Figure 9] 1 is a diagram illustrating an OFDM symbol structure mapped to each subframe having a length of 1 ms according to various subcarrier spacings in a normal cyclic prefix situation, according to one embodiment. [Figure 10] 11 is a flowchart illustrating a method for interpreting a data time resource region of a downlink or uplink of a cyclic prefix information based terminal according to another embodiment. [Figure 11] FIG. 2 is a block diagram showing the internal configuration of a terminal according to one embodiment. [Figure 12] FIG. 2 is a block diagram showing the internal configuration of a base station according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Aspects of the present disclosure address at least the problems and / or disadvantages discussed above and provide at least the advantages described below. Accordingly, one aspect of the present disclosure is to provide a method and apparatus for effectively providing services in a wireless communication system. Additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the presented embodiments.

[0011] According to an embodiment of the present disclosure, there is provided a method for operating a terminal in a wireless communication system, the method including: receiving subcarrier spacing configuration and cyclic prefix information from a base station through upper signaling; and, if the configured subcarrier spacing is 60 kHz and the cyclic prefix information indicates an extended cyclic prefix, determining a slot format of the extended cyclic prefix based on a slot format of a normal cyclic prefix.

[0012] In one embodiment of the present disclosure, the step of determining the slot format may include a step of determining the slot format with the extended cyclic prefix based on a slot format in the case where the subcarrier spacing is 15 kHz, 30 kHz, or 60 kHz and the slot format is a normal cyclic prefix.

[0013] In one embodiment of the present disclosure, the step of determining the slot format may include a step of determining, when symbols in the normal cyclic prefix slot format that overlap with a symbol in the extended cyclic prefix slot format are all down link symbols, all up link symbols, or all flexible link symbols, that the symbol in the extended cyclic prefix slot format is a down link symbol, an up link symbol, or a flexible link symbol.

[0014] In one embodiment of the present disclosure, the step of determining the slot format may include a step of determining that a symbol according to the extended cyclic prefix slot format is a flexible link symbol when at least one of the symbols according to the normal cyclic prefix slot format that overlaps with a symbol according to the extended cyclic prefix slot format is a flexible link symbol.

[0015] In one embodiment of the present disclosure, the step of determining the slot format may include a step of determining that a symbol according to the extended cyclic prefix slot format is a flexible link symbol when at least one of the symbols according to the normal cyclic prefix slot format that overlaps with a symbol according to the extended cyclic prefix slot format is a downward link symbol and at least one of the symbols is an upward link symbol.

[0016] In a wireless communication system according to an embodiment of the present disclosure, a method for operating a terminal is provided, comprising the steps of receiving reference subcarrier spacing setting and cyclic prefix information from a base station through upper signaling, and, when the cyclic prefix information indicates a normal cyclic prefix and a slot format indicator based on a subcarrier spacing different from the set reference subcarrier spacing is received, selecting two consecutive slots. n Within each slot, two consecutive n The method includes determining a slot format for each symbol such that link information based on the slot format indicator is mapped to the slot format. In one embodiment of the present disclosure, n indicates the difference between the set value of the reference subcarrier spacing and the set values ​​of the other subcarrier spacings, and is a natural number.

[0017] In one embodiment of the present disclosure, the step of determining the slot format includes, when the link information indicated by the slot format indicator is a downward link symbol, an upward link symbol, or a flexible link symbol, determining the slot format by determining the slot format of each of the two consecutive n The method may include determining the symbol as a down link symbol, an up link symbol, or a soft link symbol.

[0018] In one embodiment of the present disclosure, n The method includes determining a slot format by mapping link information of a symbol index to which each symbol belongs in time based on the slot format indicator.

[0019] In a wireless communication system according to an embodiment of the present disclosure, a terminal is provided, which includes a transceiver unit, at least one memory for storing a program, and at least one processor for executing the program to receive subcarrier spacing setting and cyclic prefix information from a base station via higher level signaling, and when the set subcarrier spacing is 60 kHz and the cyclic prefix information indicates an extended cyclic prefix, to determine a slot format of the extended cyclic prefix based on a slot format of a normal cyclic prefix.

[0020] In one embodiment of the present disclosure, the at least one processor may determine the slot format with the extended cyclic prefix based on a slot format when the subcarrier spacing is 15 kHz, 30 kHz, or 60 kHz and the normal cyclic prefix is ​​used.

[0021] In one embodiment of the present disclosure, the at least one processor may determine that a symbol in the extended cyclic prefix slot format is a downward link symbol, an upward link symbol, or a flexible link symbol when all symbols in the normal cyclic prefix slot format that overlap with a symbol in the extended cyclic prefix slot format are downward link symbols, all upward link symbols, or all flexible link symbols.

[0022] In one embodiment of the present disclosure, the at least one processor may determine that a symbol according to the extended cyclic prefix slot format is a flexible link symbol when at least one of the symbols according to the normal cyclic prefix slot format that overlaps with a symbol according to the extended cyclic prefix slot format is a flexible link symbol.

[0023] In one embodiment of the present disclosure, the at least one processor may determine that a symbol according to the extended cyclic prefix slot format is a flexible link symbol when at least one of the symbols according to the normal cyclic prefix slot format that overlaps with a symbol according to the extended cyclic prefix slot format is a downward link symbol and at least one of the symbols is an upward link symbol.

[0024] In a wireless communication system according to an embodiment of the present disclosure, a terminal is provided, which includes a transceiver unit, at least one memory for storing a program, and a base station, which receives reference subcarrier spacing setting and cyclic prefix information through higher level signaling, and when the cyclic prefix information indicates a normal cyclic prefix and a slot format indicator based on a subcarrier spacing different from the set reference subcarrier spacing is received, the terminal selects two consecutive slots. n Within each slot, two consecutive nAt least one processor determines a slot format such that link information based on the slot format indicator is mapped for each symbol. In one embodiment of the present disclosure, n indicates the difference between the set value of the reference subcarrier spacing and the set values ​​of the other subcarrier spacings, and is a natural number.

[0025] In one embodiment of the present disclosure, the at least one processor is configured to: n The method is further configured to determine each of the consecutive symbols as a downlink symbol, an uplink symbol or a flexible symbol.

[0026] In one embodiment of the present disclosure, n The method includes determining a slot format by mapping link information of a symbol index to which each symbol belongs in time based on the slot format indicator. Other aspects, advantages and salient features of the present disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the present disclosure.

[0027] The following description with reference to the accompanying drawings is provided to aid in the comprehensive understanding of various embodiments of the present disclosure defined by the claims and their equivalents. It includes various specific details to aid in the understanding, but they are considered as merely examples. Therefore, those skilled in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Furthermore, descriptions of well-known functions and structures are omitted for clarity and conciseness.

[0028] The terms and words used in the following description and claims are not limited to their bibliographic meanings, but are merely used by the inventor to enable a clear and consistent understanding of the disclosure. Therefore, it is clear to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustrative purposes only, and is not intended to limit the present disclosure defined by the appended claims and their equivalents.

[0029] The singular forms "a," "an," and "the" are understood to include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a "component surface" includes reference to one or more such surfaces.

[0030] While describing the present embodiment, technical contents that are well known in the relevant field and are not directly related to the present disclosure are not provided, and by omitting redundant descriptions, the essence of the disclosure is not obscured and is clearly described.

[0031] For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or illustrated in a schematic manner, and the size of each component does not entirely reflect the actual size. In each drawing, the same reference numerals are used to denote the same or corresponding components.

[0032] As used herein, the term "and / or" includes any combination of one or more of the associated listed items. A phrase such as "at least one" preceding a list of elements modifies the list of elements as a whole, and not any individual element of the list.

[0033] The advantages, features, and methods of achieving the same of the present disclosure will become clearer with reference to the embodiments described below in detail with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, and may be embodied in various different forms. However, the present embodiments are provided to complete the disclosure and fully inform those skilled in the art of the scope of the invention to which the disclosure pertains, and the present disclosure is only defined by the scope of the claims.

[0034] It will be understood that each block of the process flow chart and the combination of the flow charts are performed by computer program instructions, which may be loaded into a processor of a general purpose computer, a special purpose computer, or other programmable data processing equipment, such that the instructions executed by the processor of the computer or other programmable data processing equipment create means for performing the functions described in the flow chart blocks. The computer program instructions may also be stored in a computer usable or computer readable memory that can direct the computer or other programmable data processing equipment to implement the functions in a particular manner, such that the instructions stored in the computer usable or computer readable memory can produce an article of manufacture that includes instruction means for performing the functions described in the flow chart blocks. The computer program instructions may be loaded into a computer, or other programmable data processing device, such that a series of operational steps are performed in the computer, or other programmable data processing device, to generate a computer implemented process, and the instructions that cause the computer, or other programmable data processing device, to provide steps for performing the functions illustrated in the flowchart blocks.

[0035] Also, each block may represent a module, segment, or part of code that includes one or more executable instructions for performing a specified logical function. It should also be noted that in some implementations, the functions described in the blocks may occur out of order. For example, two blocks shown in succession may actually be performed substantially simultaneously, or the blocks may sometimes be performed in reverse order depending on the function.

[0036] In this embodiment, the term "module" refers to a software component or a hardware component such as a field-programmable gate array (FPGA) or an application specific integrated circuit (ASIC), and the "module" performs a certain role. However, the "module" is not limited to software or hardware. The "module" may be configured to be in an addressable recording medium and to execute one or more processors. Thus, as an example, the "module" includes components such as software components, object-oriented software components, class components, and task components, as well as processes, functions, attributes, procedures, subroutines, program code segments, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and the "module" may be further combined into fewer components and "modules" or further separated into additional components and "modules". In addition, the components and the "module" may be embodied to execute one or more CPUs of a device or a secure multimedia card. Furthermore, in this embodiment, a "unit" may include one or more processors.

[0037] Wireless communication systems have moved away from the early days of providing voice-centric services and have evolved into broadband wireless communication systems providing high-speed, high-quality packet data services, such as 3GPP's high speed packet access (HSPA), long-term evolution (LTE) or evolved universal terrestrial radio access (E-UTRA), LTE-Advanced (LTE-A), 3GPP2's high rate packet data (HRPD), ultra mobile broadband (UMB), and IEEE's 820.16e. In addition, 5G or new radio (NR) communication standards are being developed for the fifth generation wireless communication systems.

[0038] In a 5G or NR system, configuration information related to a transmission section can be dynamically set. For example, a specific transmission section may include a downlink section, an uplink section, and a flexible link section that does not correspond to either of these two links.

[0039] The present disclosure provides configuration information related to an uplink, a downlink, and a flexible link section that configure a specific transmission section considering a cyclic prefix (CP), and also provides a time resource allocation method considering a cyclic prefix (CP).

[0040] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings of the embodiments. In addition, in the description of the present disclosure, if it is determined that a specific description of a related function or configuration makes the gist of the present disclosure more unclear than necessary, the detailed description will be omitted. The terms described below are defined in consideration of the functions in the present disclosure, and they may vary depending on the intention or practice of a user or operator. Therefore, the definitions must be based on the entire contents of this specification. Hereinafter, a base station is an entity that allocates resources to a terminal, and is at least one of a gNode B, an eNode B, a Node B, a base station (BS), a radio access unit, a base station controller, or a node on a network. A terminal may include a user equipment (UE), a mobile station (MS), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing a communication function. In the present disclosure, a down link (DL) is a radio transmission path of a signal transmitted from a base station to a terminal, and an uplink (UL) is a radio transmission path of a signal transmitted from a terminal to a base station. In addition, the following describes the embodiments of the present disclosure by taking the LTE system or the LTE-A system as an example, but the embodiments of the present disclosure may also be applied to other communication systems having similar technical backgrounds or channel configurations. For example, this may include the fifth generation mobile communication technology (5G NR (new radio)) developed after LTE-A. Furthermore, the embodiments of the present disclosure may be applied to other communication systems through some modifications at the discretion of a person skilled in the art without departing from the scope of the present disclosure.

[0041] As a representative example of a broadband wireless communication system, the LTE system adopts an orthogonal frequency division multiplexing (OFDM) scheme in the downlink (DL) and a single carrier frequency division multiple access (SC-FDMA) scheme in the uplink (UL). The uplink refers to a radio link where a terminal (user equipment (UE) or mobile station (MS)) transmits data or control signals to a base station (eNode B or base station (BS)), and the downlink refers to a radio link where a base station transmits data or control signals to a terminal. In general, such a multiple access method can separate the data or control information of each user by allocating and operating time and frequency resources for transmitting data or control information for each user so that they do not overlap with each other, that is, orthogonality is achieved.

[0042] In this disclosure, the terms physical channel and signal in the conventional LTE system or LTE-A system are used to describe the proposed method and device, but the contents of this disclosure are also applicable to wireless communication systems other than the LTE system or LTE-A system.

[0043] In the present disclosure, higher level signaling refers to a signaling method transmitted from a base station to a terminal using a downlink data channel of a physical layer, or from a terminal to a base station using an uplink data channel of a physical layer, and is also referred to as RRC signaling (radio resource control signaling) or MAC (medium access control) control element (CE). FIG. 1 is a diagram showing a transmission structure in a time-frequency domain, which is a downlink radio resource domain of an LTE system or a system similar thereto.

[0044] Referring to FIG. 1, in the radio resource domain, the horizontal axis indicates the time domain and the vertical axis indicates the frequency domain. The minimum transmission unit in the time domain is an OFDM symbol, and N symb OFDM symbols 102 are collected to form one slot 106, and two slots are collected to form one subframe 105. In this case, the slot length is 0.5 ms, and the subframe length is 1.0 ms. A radio frame 114 is a time domain section composed of 10 subframes. The minimum transmission unit in the frequency domain is a subcarrier, and the bandwidth of the entire system transmission bandwidth is a total of N RB DL The subcarriers 104 may be used as the signal input / output terminals. However, such specific values ​​may be variably applied depending on the system.

[0045] In the time-frequency domain, the basic unit of resource is a resource element (RE) 112, which can be represented as an OFDM symbol index and a subcarrier index. A resource block (RB) 108 (or physical resource block (PRB)) is a set of N symb It is also defined by N consecutive OFDM symbols 102 and N R B consecutive subcarriers 110 in the frequency domain. Thus, in one slot, one RB 108 is defined by (N symb xN RB ) RE112.

[0046] Generally, the minimum transmission unit of data is RB, and in the LTE system, it is generally N symb =7, N RB = 12, and N BW and NRB is proportional to the bandwidth of the system transmission band. However, in systems other than the LTE system, a different value may be used. The data rate increases in proportion to the number of RBs scheduled to the terminal.

[0047] The LTE system can define and operate six transmission bandwidths. In the case of an FDD system in which the downlink and uplink are operated by dividing them by frequency, the downlink transmission bandwidth and the uplink transmission bandwidth may be different from each other. Here, the channel bandwidth indicates the RF bandwidth corresponding to the system transmission bandwidth. The following [Table 1] shows the correspondence between the system transmission bandwidth and the channel bandwidth defined in the LTE system. For example, the LTE system having a 10 MHz channel bandwidth has a transmission bandwidth of 50 RBs.

[0048] [Table 1]

[0049] In the case of downlink control information, it is also transmitted within the first N OFDM symbols in a subframe. In this embodiment, N={1, 2, , 3} is generally used. Therefore, the value of N is variably applied to each subframe according to the amount of control information to be transmitted in the current subframe. The transmitted control information may include a control channel transmission period indicator indicating how many OFDM symbols the control information is transmitted over, scheduling information related to downlink data or uplink data, and information related to HARQ ACK / NACK.

[0050] In an LTE system, scheduling information related to downlink data or uplink data is transmitted from a base station to a terminal through downlink control information (DCI). DCI is defined by various formats, and each format can indicate whether the scheduling information is related to uplink data (UL grant) or downlink data (DL grant), whether the control information is a compact DCI with a small size, whether spatial multiplexing using multiple antennas is applied, whether the DCI is for power control, etc. For example, DCI format 1, which is scheduling control information related to downlink data (DL grant), may include at least one of the following control information:

[0051] Resource allocation type 0 / 1 flag: Indicates whether the resource allocation method is type 0 or type 1. Type 0 applies a bitmap method and allocates resources in RBG (resource block group) units. In the LTE system, the basic unit of scheduling is the RB expressed as a time-frequency domain resource, and an RBG is composed of multiple RBs and is the basic unit of scheduling in the type 0 method. Type 1 allocates a specific RB within an RBG.

[0052] Resource block assignment: indicates the RBs allocated for data transmission. The resources represented are determined according to the system bandwidth and resource allocation method.

[0053] Modulation and coding scheme (MCS): indicates the modulation scheme used for data transmission and the size of the transport block (TB), which is the data to be transmitted. -HARQ process number: Indicates the HARQ process number. New data indicator: indicates whether this is an HARQ initial transmission or a retransmission. -Redundancy version: Indicates the redundancy version of HARQ.

[0054] -Transmit power control command (TPC) for PUCCH (physical uplink control channel): indicates a transmit power control command for the PUCCH, which is an uplink control channel.

[0055] The DCI undergoes channel coding and modulation processes and is transmitted on a downlink physical control channel (PDCCH) (or control information, hereinafter also referred to as a mixed channel) or on an enhanced PDCCH (EPDCCH) (or enhanced control information, hereinafter also referred to as a mixed channel).

[0056] Generally, DCI is scrambled with a specific radio network temporary identifier (RNTI) (or terminal identifier) ​​for each terminal, a cyclic redundancy check (CRC) is added, channel coding is performed, and then each DCI is configured and transmitted as an independent PDCCH. In the time domain, the PDCCH is mapped and transmitted during a control channel transmission period. The frequency domain mapping position of the PDCCH is determined according to the identifier (ID) of each terminal, and is transmitted over the entire system transmission band.

[0057] The downlink data is also transmitted on a physical downlink shared channel (PDSCH), which is a physical channel for transmitting downlink data. The PDSCH is also transmitted after the control channel transmission period, and scheduling information such as a specific mapping position in the frequency domain and a modulation method is determined based on the DCI transmitted through the PDCCH.

[0058] The base station uses the MCS among the control information constituting the DCI to inform the terminal of the modulation scheme applied to the PDSCH to be transmitted and the size of the data to be transmitted (TBS: transport block size). In one embodiment, the MCS is configured with 5 bits, or more or less bits. The TBS corresponds to the size of the data transport block (TB) transmitted by the base station before channel coding for error correction is applied to the TB.

[0059] In one embodiment, a transmission block (TB) may include a medium access control (MAC) header, a MAC control element (CE), one or more MAC service data units (SDUs), and padding bits. A transmission block (TB) may also refer to a unit of data passing from the MAC layer to the physical layer or a MAC protocol data unit (PDU).

[0060] The modulation methods supported by the LTE system are QPSK (quadrature phase shift keying), 16QAM (quadrature amplitude modulation), and 64QAM, and the modulation order (Qm) of each is 2, 4, and 6. That is, in the case of QPSK modulation, 2 bits per symbol can be transmitted, in the case of 16QAM modulation, 4 bits per symbol, and in the case of 64QAM modulation, 6 bits per symbol can be transmitted. In addition, modulation methods of 256QAM or more are also used depending on the system modification.

[0061] FIG. 2 is a diagram showing a transmission structure in the time-frequency domain, which is an uplink radio resource domain of LTE or a system similar thereto. 2, in the radio resource domain, the horizontal axis indicates the time domain and the vertical axis indicates the frequency domain. The minimum transmission unit in the time domain is an SC-FDMA symbol 202, and N symb UL A set of SC-FDMA symbols can constitute one slot 206. A set of two slots constitutes one subframe 205. The minimum transmission unit in the frequency domain is a subcarrier, and the total system transmission bandwidth is a total of N RB UL It is composed of N subcarriers 204. RB UL may have a value proportional to the system transmission bandwidth.

[0062] In the time-frequency domain, the basic unit of a resource is a resource element (RE) 212, which can be defined as an SC-FDMA symbol index and a subcarrier index. A resource block pair (RB pair) is a set of N symb UL RB is also defined as NRB consecutive SC-FDMA symbols and NRB consecutive subcarriers 210 in the frequency domain. symb xN RB A PUCCH is composed of REs. Generally, the minimum transmission unit of data or control information is an RB. In the case of a PUCCH, it is mapped to a frequency domain corresponding to one RB and transmitted during one subframe.

[0063] In the LTE system, a timing relationship of a PDSCH, which is a physical channel for downlink data transmission, or a PUCCH or PUSCH, which is an uplink physical channel on which a HARQ ACK / NACK corresponding to a PDCCH / EPDDCH including a semi-persistent scheduling release (SPS release) is transmitted, may also be defined. For example, in an LTE system operating in frequency division duplex (FDD), a HARQ ACK / NACK corresponding to a PDSCH or a PDCCH / EPDCCH including an SPS release transmitted in an (n-4)th subframe is also transmitted in a PUCCH or PUSCH in an nth subframe.

[0064] In the LTE system, downlink HARQ adopts an asynchronous HARQ scheme in which the data retransmission time is not fixed. That is, when the UE feeds back HARQNACK for the initial transmission data transmitted by the BS, the BS freely determines the transmission time of the retransmission data through a scheduling operation. For the HARQ operation, the UE buffers data determined to be an error as a result of decoding the received data, and then combines it with the retransmission data.

[0065] When the terminal receives a PDSCH including downlink data transmitted from the base station in subframe n, the terminal transmits uplink control information including HARQ ACK or NACK of the downlink data to the base station via a PUCCH or PUSCH in subframe (n+k). Here, k is defined to be different depending on FDD or TDD (time division duplex) of the LTE system and its subframe configuration. For example, in the case of an FDD LTE system, k is fixed to 4. Meanwhile, in the case of a TDD LTE system, k also varies depending on the subframe configuration and the subframe number. In addition, when transmitting data via multiple carriers, the value of k is also applied to be different depending on the TDD configuration of each carrier.

[0066] In the LTE system, unlike downlink HARQ, uplink HARQ adopts a synchronous HARQ scheme in which data transmission time is fixed. That is, the uplink / downlink timing relationship of PUSCH (physical uplink shared channel), which is a physical channel for uplink data transmission, PDCCH, which is a downlink control channel preceding PUSCH, and PHICH (physical hybrid indicator channel), which is a physical channel for transmitting downlink HARQ ACK / NACK corresponding to PUSCH, is also transmitted and received according to the following rules.

[0067] When the terminal receives a PDCCH including uplink scheduling control information or a PHICH including a downlink HARQ ACK / NACK transmitted from a base station in subframe n, the terminal transmits uplink data corresponding to the control information through a PUSCH in subframe (n+k). Here, k is defined differently depending on FDD or TDD (time division uplex) of the LTE system and its configuration. For example, in the case of an FDD LTE system, k is fixed to 4. Meanwhile, in the case of a TDD LTE system, k also varies depending on the subframe configuration and the subframe number. In addition, when transmitting data through multiple carriers, the value of k is applied differently depending on the TDD configuration of each carrier.

[0068] If the terminal receives a PHICH including information related to downlink HARQ ACK / NACK from the base station in subframe i, the PHICH corresponds to a PUSCH transmitted by the terminal in subframe (ik). In this case, k is defined differently depending on the FDD or TDD of the LTE system and its setting. For example, in the case of an FDD LTE system, k is fixed to 4. Meanwhile, in the case of a TDD LTE system, k varies depending on the subframe setting and the subframe number. In addition, when transmitting data via multiple carriers, the value of k may be different depending on the TDD setting of each carrier.

[0069] [Table 2]

[0070] Table 2 shows the DCI format types that can be supported by each transmission mode under the conditions set by C-RNTI in 3GPP TS 36.213. The terminal performs search and decoding assuming that the DCI format exists in the control domain section according to the currently set transmission mode. For example, when the terminal is instructed to use transmission mode 8, the terminal searches for DCI format 1A in the common search space and the UE-specific search space, and searches for DCI format 2B only in the UE-specific search space.

[0071] The above description of the wireless communication system is based on the LTE system, and the contents of the present invention are not limited to the LTE system, but are also applicable to various wireless communication systems such as NR and 5G. In addition, when the present embodiment is applied to other wireless communication systems, the k value is also applied to systems using a modulation method corresponding to FDD even if it is changed. FIG. 3 is a block diagram illustrating a cyclic prefix transmission unit structure according to one embodiment.

[0072] Cyclic prefixes are broadly divided into normal cyclic prefixes (NCP) and extended cyclic prefixes (ECP). The purpose of cyclic prefixes is to prevent inter-symbol interference (ISI) while each symbol based on a specific subcarrier is transmitted through a multipath channel, and to this end, a guard interval longer than the maximum delay spread of the channel is inserted between consecutive symbols. A method of duplicating a signal in the last section of a useful symbol section and inserting it in front is called cyclic prefixing. For reference, the 5G system or NR system provides various subcarrier spacings, unlike LTE. The LTE system provides 15 kHz as a subcarrier spacing, but the 5G system or NR system provides subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc. In this case, in the 5G system or the NR system, only the normal cyclic prefix is ​​provided in the subcarrier intervals of 15 kHz, 30 kHz, 120 kHz, and 240 kHz, while the normal cyclic prefix and the extended cyclic prefix are both provided in the subcarrier interval of 60 kHz. It goes without saying that the 5G system or the NR system may also include the provision of the extended cyclic prefix in the subcarrier intervals of 15 kHz, 30 kHz, 120 kHz, and 240 kHz.

[0073] [Table 3] shows the time unit constituting one slot according to the subcarrier interval. Here, a slot is a basic unit for exchanging data between a base station and a terminal. And a subframe means a radio transmission unit having a length of 1 ms, as in the LTE system. In the 5G system or the NR system, when the subcarrier interval is 15 kHz, the length of one slot is 1 ms, which is the same as the subframe length, and the start point and the end point are the same. When the subcarrier interval is 30 kHz, the length of one slot is 0.5 ms, and two slots can be considered to constitute one subframe. When the subcarrier interval is 60 kHz, the length of one slot is 0.25 ms, and four slots can be considered to constitute one subframe. When the subcarrier interval is 120 kHz, the length of one slot is 0.125 ms, and eight slots can be considered to constitute one subframe. When the subcarrier spacing is 240 kHz, one slot length is 0.0625 ms, and it can be seen that 16 slots make up one subframe. In Table 3, μs means microseconds and ms means milliseconds.

[0074] [Table 3]

[0075] 3, the number of OFDM symbols constituting one slot is shown to vary depending on the cyclic prefix type, regardless of the subcarrier spacing. Generally, in a cyclic prefix-based slot structure 300, one slot 302 is composed of 14 OFDM symbols 304. In an extended cyclic prefix-based slot structure 310, one slot 312 is composed of 12 OFDM symbols 314.

[0076] A slot format indicator (SFI) indicates whether the OFDM symbols constituting one slot are downlink or uplink, or flexible link or link reserved for future services. The flexible link means that it is neither downlink nor uplink, but an OFDM symbol interval that can be set later by terminal specific control information. The flexible link also includes a gap guard required in the process of converting from a downlink to an uplink.

[0077] The slot format indicator is also transmitted simultaneously to multiple terminals via a terminal group (or cell) common control channel every N slots, where N can be any natural number or can be a value such as 1, 2, 5, 10, or 20.

[0078] [Table 4] shows a slot format structure that can be applied to a normal cyclic front-end slot structure.

[0079] [Table 4]

[0080] In [Table 4], D means downlink, U means uplink, and X means flexible link. The total number of slot formats that can be supported in [Table 4] is 256, which are also included in the terminal group common downlink control information with 8 bits. However, among the total 256 slot formats that can be supported, some are not used for future services. [Table 4] shows a situation in which only 62 slot formats are actually applied. The slot format information per carrier is also composed of a total of 8 bits, and in a carrier aggregation situation, if a total of k carrier aggregations are applicable to a specific terminal group, the size of the slot format indicator information is also composed of 8 x k bits. As an example, if the carrier set consists of a total of two, the slot format indicator information is composed of a total of 16 bits, and the first 8 bits are used to indicate slot format structure information for the first carrier, and the subsequent 8 bits are used to indicate slot format structure information for the second carrier.

[0081] Alternatively, any carrier can indicate slot format configuration information in another carrier. In such a situation, when a field indicating a specific carrier is composed of n bits, the size of the slot format indicator information can be composed of (8+n) bits. For example, when a total of two carrier sets are included, the slot format indicator information can be composed of a total of nine bits, and the first bit is used to indicate a specific carrier, and the following eight bits are also used to indicate slot format structure information related to the previously indicated carrier. The slot format in the extended cyclic front-end slot structure can provide the following three methods: 1. How to reuse the normal circulating front-end slot format structure 2. Method of modifying and using the normal circulating front-end slot format structure 3. Method for providing an extended cyclic front-end slot format structure

[0082] The first method (method of reusing a normal cyclic prefix-based slot format structure) refers to a method of applying an extended cyclic prefix-based slot format structure based on [Table 4]. [Table 4] is a slot format structure designed for a situation where one slot is composed of 14 symbols, and in order to configure it with 12 symbols, two of the 14 symbol numbers can be implicitly ignored and applied. As an example, the following [Table 5] is applied as an extended cyclic prefix-based slot format structure.

[0083] [Table 5]

[0084] [Table 5] can be seen as a form in which the values ​​corresponding to symbol numbers 12 and 13 are deleted in the normal cyclic prefix based slot format structure. Compared with [Table 4], even if the terminal receives the same slot format number according to the slot format indicator, it can determine the slot format configuration information differently according to the cyclic prefix information set in advance in the higher signaling. As an example, when slot format information 58 is received according to the slot format indicator, in the normal cyclic prefix structure, the slot format is as shown in the following [Table 6].

[0085] [Table 6]

[0086] The slot format in the extended cyclic preamble structure is as shown in Table 7 below.

[0087] [Table 7]

[0088] [Table 5] shows an example in which the symbol configuration information corresponding to the 13th and 14th symbols in one slot is deleted from the slot format structure of [Table 4], but it is also possible to delete the symbol configuration information corresponding to the 1st and 2nd symbols in one slot from the slot format configuration information of [Table 4] as shown in [Table 8]. It is also possible to delete the symbol configuration information corresponding to the 4th and 11th symbols in one slot as shown in [Table 8-1].

[0089] [Table 8]

[0090] [Table 8-1]

[0091] [Table 8] can be seen as a normal cyclic prefix based slot format with the values ​​corresponding to symbol numbers 0 and 1 deleted. [Table 8-1] can be seen as a normal cyclic prefix based slot format with the values ​​corresponding to symbol numbers 3 and 10 deleted. Compared with [Table 4], even if the terminal receives the same slot format number according to the slot format indicator, it can determine the slot format configuration information differently according to the cyclic prefix information set in advance in the higher signaling. As an example, when slot format information 58 is received according to the slot format indicator, the slot format in the normal cyclic prefix structure is as shown in the following [Table 9].

[0092] [Table 9]

[0093] The slot format in the extended cyclic pre-structure is as shown in Table 10.

[0094] [Table 10]

[0095] Generally, the first method (method of reusing the normal cyclic prefix-based slot format structure) means removing the values ​​of two specific columns (or symbol numbers or symbol indexes) in the normal cyclic prefix-based slot format structure and using the remaining values ​​in the extended cyclic prefix-based slot format structure.

[0096] 3 shows a mapping process to an extended cyclic prefix based slot format structure via a normal cyclic prefix based slot format structure. It can be seen that a symbol number (or symbol index) of a normal cyclic prefix based slot format structure 320 is mapped to a symbol number (or symbol index) of an extended cyclic prefix based slot format structure 322. Referring to FIG. 3, it shows a situation where symbol number 0 of the normal cyclic prefix based slot format structure is mapped to k0, 2 to k1, 3 to k2, 4 to k3, 5 to k4, 6 to k5, 7 to k6, 8 to k7, 10 to k8, 11 to k9, 12 to k10, and 13 to k11. Here, k0, k1, k2, k3, k4, k5, k6, k7, k8, k9, k10, and k11 refer to symbol numbers (or symbol indexes) having values ​​from 0 to 11 in the extended cyclic prefix based slot format structure, and have different values ​​(or some of them have the same value). Although a one-to-one mapping relationship is illustrated in FIG. 3, one-to-many mapping is also possible. For example, it is possible that symbol number 1 of the normal cyclic prefix based slot format structure is simultaneously mapped to symbol numbers k2 and k4 of the extended cyclic prefix based slot format structure. Such mapping means that the symbol information configuration is directly applied to the symbol information of each format number applied to a specific symbol number of the normal cyclic prefix based slot format structure. As an example, when symbol number 2 of the normal cyclic pre-base slot format structure is mapped to symbol number 3 of the extended cyclic pre-base slot format structure, the following mapping relationship as shown in Table 11 can be fully applied.When a determined cyclic prefix is ​​configured in UE-common or UE-specific higher signaling, when a UE receives slot format indicator information via downstream control information, it can be expected to use the applied values ​​(further mapped in ascending order from 0) for the remaining 12 symbol numbers except for the specific 2 symbol numbers (among the 14 symbol numbers) in the normal cyclic prefix based slot format structure, relative to the extended cyclic prefix based slot format structure.

[0097] [Table 11]

[0098] The second method is a method of modifying and using the normal cyclic prefix-based slot format structure. In the first method, the symbol number of the normal cyclic prefix-based slot format and the symbol number of the extended cyclic prefix-based slot format are mapped, and the symbol configuration information applied to the symbol number applied to each normal cyclic prefix-based slot format number remains unchanged, but there is a problem that two or more specific format numbers indicate the same slot structure in the extended cyclic prefix-based slot format structure. For example, in [Table 5], it can be seen that slot format number 8 and slot format number 9 indicate the same slot configuration information. In this way, it is quite possible to provide an extended cyclic prefix-based slot format structure in which the slot structure removes the same slot format information.

[0099] The rules for providing such a method are as follows: 1) First, as in the first method, in the normal cyclic front-end base slot format structure, two specific symbol numbers are removed and the remaining 12 symbol numbers are used as the basis for the extended cyclic front-end base slot format structure ([Table 12] is an example in which columns 12 and 13 are excluded).

[0100] [Table 12]

[0101] 2) Then, among those with the same slot structure, delete all except the smallest slot format number (or the largest number). ([Table 13] considers, as an example, the case where all except the smallest slot format number are deleted.)

[0102] [Table 13]

[0103] Then, in ascending order, the slot format numbers excluded in rule 2) are reallocated to other slot format numbers (or, in rule 2), the slot format numbers are assigned to "reserved"; [Table 14] is an example that considers the reallocation of the slot format numbers excluded in rule 2) to other slot format numbers).

[0104] [Table 14] As an example, a structure derived by applying such rules may well be used as an extended cyclic front-end infrastructure slot format structure.

[0105] The third method (method of providing an extended cyclic pre-base slot format structure) is not a method of reusing or modifying a normal cyclic pre-base slot format structure, but a method of using a new format structure. The following rules may be applied to the method of considering the new extended cyclic pre-base slot format structure.

[0106] Consider that all symbols are either downlinks, uplinks, or flexible links. ● When a downward link can be converted to an upward link only once -For short consecutive downward links, consider up to 3 downward link symbols -For short consecutive upward links, a maximum of two upward link symbols are considered. - Consider up to 3 flexible link symbols for short consecutive flexible links ◎ If only downward links and flexible link configurations exist ◎ If there are many downward link symbols: Flexible link symbols start with symbol numbers 9, 10, and 11, and end with symbol number 11 ◎If there are many flexible link symbols: Flexible link symbols start with symbol numbers 1, 2, 3 and end with symbol number 11 -If only upward link and flexible link configuration exists ◎ When there are many upward link symbols: Flexible link symbols start with symbol number 0 and end with symbol numbers 0, 1, 2, 3, 4, and 5 ◎ When there are many flexible link symbols: Flexible link symbols start with symbol number 0 and end with symbol numbers 9 and 10 When there are upward links, downward links, and flexible link configurations ◎When there are many downward link symbols: Flexible link symbols are located at symbol numbers {10}, {9,10}, {8,9,10}, {9}, {8,9}, {7,8,9} ◎ When there are many flexible symbols: Flexible link symbols start with symbol numbers 1, 2, and 3 and end with symbol numbers 9 and 10 ◎When there are many upward link symbols: Flexible link symbols are symbol numbers {1}, {2}, {3}, {1,2}, {2,3}, {3,4}, {1,2,3}, {2,3,4}, {3,4,5} ◎LTE structure and matching patterns {downward, upward, flexible}: {8-3-1}, {5-5-2}, {5-2-5} ◎Otherwise: 3 downward link symbols at the start of the slot, 3 upward link symbols at the end of the slot When it is possible to convert from a downward link to an upward link twice - Consider symmetrical structure ◎When there are short consecutive downward links, a maximum of two downward link symbols are considered. ◎ In the case of short consecutive upward links, a maximum of one upward link symbol is considered. ◎When it is a short continuous flexible link, a maximum of two flexible link symbols are considered.

[0107] Considering such criteria, an extended cyclic front-end base station slot format configuration can be considered as shown in [Table 15].

[0108] [Table 15]

[0109] When a normal cyclic prefix is ​​configured by terminal common or terminal specific upper signaling, the terminal does not expect to receive control information including slot format indicator information (or CRC with a slot format indicator-related RNTI scrambled) taking into account an extended cyclic prefix based slot format structure. Alternatively, when a normal cyclic prefix is ​​configured by terminal common or terminal specific upper signaling, the terminal expects to receive control information including slot format indicator information (or CRC with a slot format indicator-related RNTI scrambled) taking into account a normal cyclic prefix based slot format structure.

[0110] When an extended cyclic prefix is ​​configured by terminal common or terminal specific upper signaling, the terminal does not expect to receive control information including slot format indicator information (or CRC with slot format indicator-related RNTI scrambled) taking into account a normal cyclic prefix-based slot format structure. Alternatively, when an extended cyclic prefix is ​​configured by terminal common or terminal specific upper signaling, the terminal expects to receive control information including slot format indicator information (or CRC with slot format indicator-related RNTI scrambled) taking into account an extended cyclic prefix-based slot format structure.

[0111] If a terminal does not receive cyclic prefix-related configuration information through terminal-common or terminal-specific upper signaling, the terminal does not expect to receive control information including slot format indicator information (or CRC with slot format indicator-related RNTI scrambled) taking into account a normal cyclic prefix-based slot format structure. Alternatively, if a terminal does not receive cyclic prefix-related configuration information through terminal-common or terminal-specific upper signaling, the terminal expects to receive control information including slot format indicator information (or CRC with slot format indicator-related RNTI scrambled) taking into account an extended cyclic prefix-based slot format structure.

[0112] FIG. 4 is a flow chart illustrating a method for transmitting and receiving control information and data information based on receiving slot format indicator information in a terminal according to an embodiment.

[0113] The terminal sets the slot format configuration information according to a value defined in the standard, or when various slot format configuration information exists, one of them is also set as terminal common or terminal specific upper signaling (400). The terminal can set a terminal common downlink control information area in which a slot format indicator including the slot format configuration information is transmitted by terminal specific or terminal common upper signaling. In addition, a period in which the slot format indicator is transmitted can also be set in the terminal common downlink control information area. In addition, in the terminal common downlink control information area, the type of information included in the slot format indicator (in other words, whether or not slot format information is present or carrier indication information is included for each carrier considering the carrier set) and the size of the terminal common downlink control information including the slot format indicator information are also set by terminal specific or terminal common upper signaling.

[0114] The configuration of the slot format indicator information is also designed as follows. -Slot format indicator type 1 = {Slot format configuration information for one carrier} -Slot format indicator type 2 = {carrier indicator information + slot format configuration information} -Slot format indicator type 3 = {slot format configuration information for carrier a + slot format configuration information for carrier b + ... + slot format configuration information for carrier x}

[0115] The terminal searches for slot format indicator information according to the set slot format indicator setting information and confirms slot format configuration information (402). Then, the terminal transmits or receives data according to the confirmed slot format configuration information (404). Alternatively, the terminal may perform related operations such as channel measurement, reference signal transmission, or channel measurement report (404). In a situation where the slot format information described in FIG. 3 is used, when the slot format indicator information is transmitted for two or more slot periods, a method of notifying two or more slot information is as follows. 1) How the specified slot format is repeated for each slot period 2) A method of including slot format indicator information for each slot in the slot format indicator information 3) How n slot format indicator information is applied to k slots

[0116] Method 1) is a method in which the same slot format is applied to multiple slots that have been set. Method 2) is a method in which different slot formats are applied to different slots. The slot format indicator types to support this are also defined as follows: -Slot format indicator type 4 = {slot format configuration information for slot 1, slot format configuration information for slot 2, ..., slot format configuration information for slot k}

[0117] Method 3) refers to a modified slot format indicator type, where n is less than or equal to k, since the size of the slot format indicator may increase when there are many slots to indicate (say, 20 slots), and the associated slot format indicator type is also defined as follows: -Slot format indicator type 5 = {Slot format indicator information 1, ..., Slot format indicator information n}

[0118] The slot format indicator applied to slot k according to slot format indicator type 5 is slot format indicator information i, where i is a mod(k / n) value.

[0119] FIG. 5 is a flow chart illustrating a method for receiving a slot format indicator using cyclic prefix information in a terminal according to one embodiment. When the UE sets a frequency band section (BWP) after initial connection, the starting point of a physical resource block (PRB), the length of the frequency band section, the subcarrier spacing of the frequency band, and cyclic prefix information of the frequency band are also set through UE-common or UE-specific upper signaling. The frequency band section corresponds to either an uplink or a downlink. Alternatively, without setting the frequency band section, cyclic prefix information related to a separately initially connected frequency band section (or a system band section) is also set through UE-common or UE-specific upper signaling. Such a UE can determine whether the cyclic prefix of the set downlink or uplink bandwidth section is a normal cyclic prefix or an extended cyclic prefix (500).

[0120] The terminal receives slot format indicator information in a terminal group common control region set for each specific slot period in a bandwidth section set as described in FIG. 4 (502). The terminal determines interpretation of the received slot format indicator information based on cyclic prefix information (504). If the cyclic prefix information is a normal cyclic prefix, the terminal confirms that the received slot format indicator is transmitted based on a normal cyclic prefix based slot format and interprets slot configuration information accordingly (506). If the cyclic prefix information is an extended cyclic prefix, the terminal confirms that the received slot format indicator is transmitted based on an extended cyclic prefix based slot format and interprets slot configuration information accordingly (508).

[0121] FIG. 6 is a diagram illustrating downward control information and upward or downward data information resource allocation according to one embodiment. In order to schedule resource information of downlink data or uplink data, the base station can transmit downlink control information including an RNTI (e.g., C-RNTI) including related information and a scrambled CRC to the terminal via a terminal common or terminal specific control channel 604. When the terminal performs blind decoding for detecting downlink control information in the set terminal common or terminal specific control channel 604 and detects it, the terminal can know which resource its uplink data resource or downlink data resource is assigned to through the downlink control information. FIG. 6 shows a situation in which an uplink physical data resource or downlink physical data resource 606 of the terminal is assigned to the terminal. The terminal can determine which frequency resource or time resource in the downlink control information has the uplink physical data resource or downlink physical data resource 606 scheduled for the terminal through the downlink control information detected in the downlink control information channel 604. The downlink control information may also include the following information.

[0122] Carrier Wave Indicator Frequency band section indicator Frequency section to which uplink data or downlink data is assigned - Distributed method (bitmap method), collective method (start point and length indication method) Time interval to which upward link data or downward link data is assigned -Start point and length indication method (or start point and end point) Reservation resource set indicator ● Bundling size indicator MCS, NDI, RV, HARQ process number, DAI Code block group indicator, code block group discard indicator HARQ timing indicator

[0123] In such information, the time interval to which uplink data or downlink data is assigned is indicated by a data transmission start symbol 610 and a data transmission interval length 612, or a data transmission start symbol 610 and a data transmission end symbol 614 in FIG. 6. FIG. 6 assumes a situation in which one slot is composed of 14 symbols in a situation in which normal cyclic prefixing is applied. In such a situation, as an example, as information on the time interval to which downlink data or downlink data assigned to a terminal is assigned, the data transmission start symbol is indicated by the 5th symbol, and the data transmission interval length is also indicated by 8 symbols. Alternatively, as information on the time interval to which downlink data or downlink data assigned to a terminal is assigned, the data transmission start symbol is indicated by the 5th symbol, and the data transmission end symbol is also indicated by the 12th symbol.

[0124] For time resource allocation related to uplink data or downlink data, the downlink control information also includes the number of cross slot intervals set in the upper signaling, the start symbol length of the data transmission interval, and a data resource mapping structure as shown in the following [Table 16].

[0125] [Table 16]

[0126] In Table 16, K0 means a difference between a slot number where downstream control information instructing scheduling is transmitted during downstream data scheduling and a slot number where downstream data scheduled by the downstream control information is transmitted. For example, K0 may be composed of 2 or 3 bits. In Table 16, K2 means a difference between a slot number where downstream control information instructing scheduling is transmitted during uplink data scheduling and a slot number where upstream data scheduled by the downstream control information is transmitted. For example, when K2 is 1, it means that the uplink data information scheduled by the downstream control information is transmitted in the slot immediately following the slot where the downstream control information is transmitted. For example, K0 may be composed of 2 or 3 bits.

[0127] In Table 16, the data resource mapping structure is also used to indicate whether the location of a demodulation reference signal (DMRS) required for decoding uplink or downlink data is located in the first symbol in the time resource region to which the data resource is allocated, or in the third or fourth symbol based on a normal cyclic prefix (or extended cyclic prefix) slot. As an example, the data resource mapping structure may be configured by one or two bits.

[0128] In Table 16, the type of time resource allocation format is also set in units of exponent values ​​of 2, and for example, 16 values ​​are also set by upper signaling. In addition, one of various numbers of the set time resource allocation format can be indicated through downlink control information and transmitted to the UE. The UE can be indicated a specific time resource allocation format number through downlink control information, and can know the corresponding K0 value (or K2) value, SLIV value, and data resource mapping structure type.

[0129] In Table 16, SLIV means a data transmission start symbol and a transmission interval symbol length (SLIV: symbol starting and length indicator value). As an example, SLIV may be configured by 6 or 7 bits. The following Equation 1 may be used to calculate the SLIV value. In Equation 1, L means a symbol length of a time resource region to which an uplink data resource or a downlink data resource is allocated, and S means a starting symbol value of a time resource region to which an uplink data resource or a downlink data resource is allocated. For reference, the SLIV value may also be used to indicate time interval information to which a downlink data physical resource or an uplink data physical resource is allocated. [Number 1] if (L - 1) ≦ K1 then SLIV = K2 x (L - 1) + S else SLIV = 14 x (K2 - L + 1) + (K2 - 1 - S) where 0 < L ≦ 14 - S

[0130] Instead of separately informing the data transmission start symbol and the transmission section symbol length through Equation 1, the terminal can derive the S value and the L value through the SLIV value itself, and the terminal can receive data time resource allocation information for the downlink or uplink through it.

[0131] Equation 1 is also applied to a normal cyclic prefix-based slot structure in which one slot is composed of 14 OFDM symbols. When the extended cyclic prefix-based slot structure is set to the UE by UE-common or UE-specific upper signaling, the UE can determine the SLIV value by applying the following Equation 2-1 or 2-2, or Equation 2-3, Equation 2-4, or Equation 2-5. [Number 2-1] if (L - 1) ≦ 6 then SLIV = 12 x (L - 1) + S else SLIV = 12 x (12 - L + 1) + (12 - 1 - S) where 0 < L ≦ 12 - S [Figure 2-2] if (L - 1) ≦ 7 then SLIV = 12 x (L - 1) + S else SLIV = 12 x (12 - L + 1) + (12 - 1 - S) where 0 < L ≦ 12 - S [Figure 2-3] if (L - 1) ≦ 7 then SLIV = 12 x (L - 1) + S else SLIV = 12 x (14 - L + 1) + (14 - 1 - S) where 0 < L ≦ 12 - S [Figure 2-4] if (L - 1) ≦ 7 then SLIV = 14 x (L - 1) + S else SLIV = 14 x (14 - L + 1) + (12 - 1 - S) where 0 < L ≦ 12 - S [Figure 2-5] if (L - 1) ≦ 7 then SLIV = 14 x (L - 1) + S else SLIV = 14 x (14 - L + 1) + (14 - 1 - S) where 0 < L ≦ 12 - S

[0132] When a normal cyclic prefix is ​​configured by terminal common or terminal specific upper signaling, the terminal may expect the SLIV value to be derived based on Equation 1. Alternatively, when an extended cyclic prefix is ​​not configured by terminal common or terminal specific upper signaling, the terminal may expect the SLIV value to be derived based on Equation 1. Alternatively, when an extended cyclic prefix is ​​configured by terminal common or terminal specific upper signaling, the terminal may expect the SLIV value to be derived based on Equation 2-1 or Equation 2-2, or Equation 2-3, Equation 2-4, or Equation 2-5. [Number 3-1] if (L - 1) ≦ K1 then SLIV = K2 x (L - 1) + S else SLIV = 14 x (K2 - L + 1) + (K2 - 1 - S) where 0 < L ≦ K2 - S

[0133] In Equation 3-1, the values ​​of K1 and K2 are determined to be different depending on the cyclic prefix set by the terminal. As an example, when a normal cyclic prefix is ​​set by terminal common or terminal specific upper signaling, the terminal may expect the SLIV value to be derived to which {K1=7, K2=14} values ​​are applied in Equation 3-1. Alternatively, when an extended cyclic prefix is ​​not set by terminal common or terminal specific upper signaling, the terminal may expect the SLIV value to be derived to which {K1=7, K2=14} values ​​are applied in Equation 3-1. Alternatively, when an extended cyclic prefix is ​​set by terminal common or terminal specific upper signaling, the terminal may expect the SLIV value to be derived to which {K1=6, K2=12} values ​​are applied in Equation 3-1. [Number 3-2] if (L - 1) ≦ 7 then SLIV = 14 x (L - 1) + S else SLIV = 14 x (14 - L + 1) + (K3 - 1 - S) where 0 < L ≦ K3 - S

[0134] Alternatively, in Equation 3-2, the value of K3 may be determined to be different depending on the cyclic prefix set by the UE. As an example, when a normal cyclic prefix is ​​set by UE common or UE specific upper signaling, the UE may expect the {K3=14} value to be derived as an SLIV value applied in Equation 3-2. Alternatively, when an extended cyclic prefix is ​​not set by UE common or UE specific upper signaling, the UE may expect the {K3=14} value to be derived as an SLIV value applied in Equation 3-2. Alternatively, when an extended cyclic prefix is ​​set by UE common or UE specific upper signaling, the UE may expect the {K3=12} value to be derived as an SLIV value applied in Equation 3-2. [Number 3-3] if (L - 1) ≦ 7 then SLIV = 14 x (L - 1) + S else SLIV = 14 x (14 - L + 1) + (14 - 1 - S) where 0 < L ≦ K4 - S

[0135] Alternatively, in Equation 3-3, the value of K4 may be determined differently depending on the cyclic prefix set by the UE. As an example, when a normal cyclic prefix is ​​set by UE common or UE specific upper signaling, the UE may expect the {K4=14} value to be derived as an SLIV value applied in Equation 3-3. Alternatively, when an extended cyclic prefix is ​​not set by UE common or UE specific upper signaling, the UE may expect the {K4=14} value to be derived as an SLIV value applied in Equation 3-3. Alternatively, when an extended cyclic prefix is ​​set by UE common or UE specific upper signaling, the UE may expect the {K4=12} value to be derived as an SLIV value applied in Equation 3-3.

[0136] As another example, the UE can use Equation 1 regardless of whether a normal cyclic prefix or an extended cyclic prefix is ​​set by UE common or UE specific upper signaling. In such a situation, when an extended cyclic prefix is ​​set by UE common or UE specific upper signaling, the UE does not expect the transmission section of uplink data or downlink data scheduled beyond a slot boundary among the SLIV values ​​derived by Equation 1 to be scheduled. For example, if the start symbol of the downlink data transmission section is 10th and the length of the downlink data transmission section is 3 symbols through the SLIV value, the normal cyclic prefix based slot structure has 14 OFDM symbols, so downlink data resource allocation is possible in one slot, but the extended cyclic prefix based slot structure has 12 OFDM symbols, so downlink data resource allocation is not possible in one slot, and downlink data resource allocation occurs up to some symbols of the next slot. Therefore, a terminal does not expect to receive a SLIV value that would give rise to such a situation.

[0137] As yet another example, when S has a value of 0 to 13 and L has a value of 1 to 14, in a normal cyclic pre-loading situation, the possible SLIV value corresponds to 0 to 104. When the UE receives the extended cyclic pre-loading setting, it can expect to receive an indication of the uplink or downlink data transmission section of the possible SLIVs, except for the following values ​​(candidate 1 or candidate 2).

[0138] [Candidate 1] 12, 13, 25, 26, 27, 38, 39, 40, 41, 51, 52, 53, 54, 64, 65, 66, 67, 77, 78, 79, 80, 90, 91, 92, 93, 103, 104 [Candidate 2] 12, 13, 25, 26, 27, 38, 39, 40, 41, 51, 52, 54, 55, 64, 65, 68, 69, 77, 78, 82, 83, 90, 91, 96, 97, 103, 104

[0139] The situation in which the extended cyclic prefix or the normal cyclic prefix is ​​set in the terminal by terminal-common or terminal-specific higher signaling is received by the terminal together with the frequency band section setting information for the downlink or uplink, or is also set by other separate signaling.

[0140] As yet another example, the UE is also configured as to whether the cyclic prefix information is an extended cyclic prefix or a normal cyclic prefix for each downlink and uplink by UE common or UE specific upper signaling, or the UE is also configured as to whether the cyclic prefix information is an extended cyclic prefix or a normal cyclic prefix for both the downlink and uplink by UE common or UE specific upper signaling.

[0141] As yet another example, when setting a frequency band section, the terminal sets cyclic prefix information, which is one of parameters required for setting a frequency band section for an uplink or downlink, together with the frequency band section setting, and is expected to be able to grasp whether the frequency band section is set to a normal cyclic prefix or an extended cyclic prefix. FIG. 7 is a flowchart illustrating a method for interpreting a data time resource field of a downlink or uplink of a cyclic prefix information-based terminal according to an embodiment.

[0142] The terminal receives cyclic prefix-related information in advance through terminal common or terminal specific higher level signaling (700). The terminal also receives downlink control information through a terminal common or terminal specific downlink control channel that has been previously set (702). The terminal determines how to interpret the uplink data or downlink data included in the downlink control information with respect to a time resource region among the resource regions to which the data is assigned (704).

[0143] If the cyclic prefix-related information previously set in the UE common or UE specific upper signaling is a normal cyclic prefix (or if the cyclic prefix-related information is not previously set by the UE common or UE specific upper signaling), the UE interprets the data time resource information of type A (706). The method of interpreting the data time resource information of type A may take into account one of Equation 1, Equation 3-1, Equation 3-2, or Equation 3-3.

[0144] If the cyclic prefix related information previously set in the UE common or UE specific upper signaling is an extended cyclic prefix, the UE interprets the data time resource information of type B (708). The method of interpreting the data time resource information of type B may take into consideration one of Equation 2-1, Equation 2-2, Equation 2-3, Equation 2-4, or Equation 2-5, or Equation 3-1, Equation 3-2, or Equation 3-3.

[0145] FIG. 8 is a diagram illustrating a method of applying a slot format indicator according to another subcarrier spacing setting, according to an embodiment. A 5G system or an NR system may provide uplink or downlink physical channels having various subcarrier spacings such as 15 kHz, 30 kHz, and 60 kHz. When a frequency band section is set, various subcarrier spacings may be set in the terminal, or may be set separately and independently. Alternatively, the subcarrier spacing information may be set in the terminal even if it is included in other terminal-common or terminal-specific upper signaling information other than the frequency band section setting information. For the subcarrier spacing set by the upper signaling, the terminal may interpret the slot format indicator differently.

[0146] FIG. 8 illustrates an OFDM symbol structure mapped to each subframe having a length of 1 ms according to various subcarrier spacings in a normal cyclic prefix situation, according to an embodiment.

[0147] In FIG. 8, reference numeral 800 denotes an OFDM symbol mapping structure per slot at a 15 kHz subcarrier interval. The slot length is 1 ms, which is a subframe unit based on the LTE system, and has the same length as a 15 kHz slot. A total of 14 OFDM symbols exist in a slot having a length of 1 ms. Reference numeral 802 denotes an OFDM symbol mapping per slot at a 30 kHz subcarrier interval. Based on a subframe having a length of 1 ms, there are two slots having a total length of 0.5 ms, and there are 14 symbols per slot. Therefore, based on a subframe having a length of 1 ms, there are a total of 28 OFDM symbols. Reference numeral 804 denotes an OFDM symbol mapping per slot at a 60 kHz subcarrier interval. Based on a subframe having a length of 1 ms, there are four slots having a total length of 0.25 ms, and there are 14 symbols per slot. Therefore, based on a subframe having a length of 1 ms, there are a total of 56 OFDM symbols.

[0148] If the slot format indicator information is configured based on 15 kHz, a terminal configured for 30 kHz or 60 kHz must interpret the slot format indicator information differently. To support this, the 15 kHz reference OFDM symbol 1 and the corresponding 30 kHz reference OFDM symbols 1A and 1B can have the same link (uplink or downlink) from a time perspective. The purpose of doing so is that when the frequency band operated by the base station operates in TDD, a situation may occur in which the link of the previous frequency band must be operated only as a downlink or uplink at a specific time.

[0149] According to this method, a terminal set to 15 kHz may be able to sequentially map 14 fields belonging to a specific index indicated by a slot format indicator in terms of time. For example, when the format 24 value of Table 4 is applied as a slot format indicator, a terminal set to 15 kHz determines that, for a total of 14 symbols present in a slot, the 1st to 3rd symbols are set as downlinks, the 4th to 12th symbols are set as flexible links (unknown links; links that are neither downlinks nor uplinks), and the 13th to 14th symbols are set as uplinks for each slot indicated by the slot format indicator.

[0150] A terminal set to 30 kHz may assume that two consecutive symbols are mapped to one field for 14 fields belonging to a specific index indicated by the slot format indicator. For example, when the format 24 value of Table 4 is applied as a slot format indicator, a terminal set to 30 kHz may determine that a total of 28 symbols present in two consecutive slots are applied as links for each slot indicated by the slot format indicator. That is, it may be determined that the 1st to 6th symbols of the first slot are set as a downlink, the 7th to 14th symbols of the first slot are set as a flexible link, the 1st to 10th symbols of the second slot are set as a flexible link, and the 11th to 14th symbols are set as an uplink. In summary, when the slot format indicator is set based on 15 kHz, a terminal set to 30 kHz may determine that the slot format indicator is mapped across two slots. As another example, when the 15 kHz-based slot format indicator information is set to 15*2 n When a kHz terminal receives, 2 n In another example, the slot format indicator information based on 15 kHz is transmitted repeatedly over 15*2 slots. n When a kHz terminal receives, 2 n A field of slot format indicator information is consecutively arranged twice over a slot. n It can be determined that the sigma-based ...

[0151] If 800 in FIG. 8 means 15 kHz-based slot format indicator information, 1 to 14 in 800 correspond to symbol numbers (or indexes) 0 to 13 (or 1 to 14) in a table (for example, Table 14) that the slot format indicator can indicate. When a terminal set to 15 kHz receives a slot format indicator setting, it can be interpreted that link information indicated by the slot format indicator is mapped for each symbol in one slot. 15*2 n When a terminal set to kHz receives a slot format indicator setting, it must be set to 2 consecutive n In each slot, two consecutive nIt can be interpreted that link information indicated in the slot format indicator is mapped in the same manner for each symbol. Reference numeral 802 is a drawing illustrating a method of applying a slot format indicator for a terminal set to 30 kHz. In 802, symbols 1A and 1B may have the same link information as symbol 1 in 800. For example, if symbol 1 is a downlink in 800, symbols 1A and 1B are both downlinks in 802. Generalizing this, symbols kA and kB may have the same link information as symbol k in 800. Here, k has one value of 1 to 14. In 802, the symbol indexes kA and kB constituting the first slot can have k values ​​of 1 to 7 (i.e., 1A, 1B, 2A, 2B, 3A, 3B, 4A, 4B, 5A, 5B, 6A, 6B, 7A, 7B), and the symbol indexes kA and kB constituting the second slot can have k values ​​of 8 to 14 (i.e., 8A, 8B, 9A, 9B, 10A, 10B, 11A, 11B, 12A, 12B, 13A, 13B, 14A, 14B). As another example, in 802, regardless of the time domain, from a logical point of view, the symbol index kA constituting the first slot may have k values ​​of 1 to 14 (i.e., 1A, 2A, 3A, 4A, 5A, 6A, 7A, 8A, 9A, 10A, 11A, 12A, 13A, 14A), and the symbol index kB constituting the second slot may have k values ​​of 1 to 14 (i.e., 1B, 2B, 3B, 4B, 5B, 6B, 7B, 8B, 9B, 10B, 11B, 12B, 13B, 14B). In such a case, it should be noted that in 802, each field does not belong to time.

[0152] Reference numeral 804 is a diagram illustrating a method in which a slot format indicator for a terminal set to 60 kHz is applied. In 804, symbols 1a, 1b, 1c, and 1d may have the same link information as symbol 1 in 800. For example, if symbol 1 is a downlink in 800, symbols 1a, 1b, 1c, and 1d are all downlinks in 802. In generalization, symbols ka, kb, kc, and kd may have the same link information as symbol k in 800, where k has one value of 1 to 14. In 804, the symbol indexes constituting the first slot are 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3a, 3b, 3c, 3d, 4a, and 4b. In 804, the symbol indexes constituting the second slot are 4c, 4d, 5a, 5b, 5c, 5d, 6a, 6b, 6c, 6d, 7a, 7b, 7c, and 7d. In 804, the symbol indexes constituting the third slot are 8a, 8b, 8c, 8d, 9a, 9b, 9c, 9d, 10a, 10b, 10c, 10d, 11a, and 11b. In 804, the symbol indexes constituting the fourth slot are 11c, 11d, 12a, 12b, 12c, 12d, 13a, 13b, 13c, 13d, 14a, 14b, 14c, and 14d. As another example, in 804, the symbol index ka constituting the first slot, which does not belong to the time domain, has a k value of 1 to 14 (i.e., 1a, 2a, 3a, 4a, 5a, 6a, 7a, 8a, 9a, 10a, 11a, 12a, 13a, 14a), and the symbol index kb constituting the second slot has a k value of 1 to 14 (i.e., 1b, 2b, 3b, 4b, 5b, 6b, 7b, 8b, 9b, 10b, 11b, 12b, The symbol index kc constituting the third slot has k values ​​ranging from 1 to 14 (i.e., 1c, 2c, 3c, 4c, 5c, 6c, 7c, 8c, 9c, 10c, 11c, 12c, 13c, 14c), and the symbol index kc constituting the fourth slot has k values ​​ranging from 1 to 14 (i.e., 1d, 2d, 3d, 4d, 5d, 6d, 7d, 8d, 9d, 10d, 11d, 12d, 13d, 14d).In the present invention, 15, 30, and 60 kHz have been described, but the present invention can be fully applied to situations where other subcarrier intervals are set. In such cases, it should be noted that in 802, each field does not belong to time.

[0153] If a 15 kHz-based slot format indicator is transmitted every a slot period, a terminal set to 15 kHz can determine that the slot format indicator is repeatedly applied every a slot. n For terminals set to kHz, the slot format indicator is a*2 n It may be determined that the same rule is applied repeatedly.

[0154] For reference, in FIG. 8, in the relationship between slots and symbols shown for each subcarrier interval, it should be noted that the first symbol length for each slot generally has a longer length than other symbol lengths present within the same slot.

[0155] When the above method is applied, the following rule is also applied: When a terminal with a subcarrier spacing other than 15 kHz receives 15 kHz-based slot format indicator information, the link information set for its own symbol is based on the link information of the 15 kHz-based symbol index 806 indicated by the 15 kHz-based slot format indicator to which the corresponding symbol 808 belongs in time. That is, if the symbol index value of 806 is a downlink, the symbol of 808 is also a downlink.

[0156] In this disclosure, such a rule is named the first rule, and can be applied when the subcarrier spacing set for 806 symbols is the same as or different from the subcarrier spacing set for 808 symbols, or when the cyclic prefix set for 806 symbols is the same as or different from the cyclic prefix set for 808 symbols.

[0157] FIG. 9 is a diagram illustrating a method of applying a slot format indicator using another subcarrier spacing setting and another cyclic prefix according to an embodiment. Reference numeral 900 is a diagram illustrating a field (number or index) in which a slot format indicator value based on 15 kHz can be set. Reference numeral 900 is a diagram illustrating the number of symbols and indexes per slot when a terminal set to 15 kHz operates in a subframe having a length of 1 ms. Reference numeral 902 is a diagram illustrating the number of symbols and indexes per slot when a terminal set to 60 kHz and a normal cyclic prefix operates in a subframe having a length of 1 ms, and there are a total of four slots. Reference numeral 904 is a diagram illustrating the number of symbols and indexes per slot when a terminal set to 60 kHz and an extended cyclic prefix operates in a subframe having a length of 1 ms, and there are a total of four slots, the same as reference numeral 902. However, the number of symbols present in one slot is a total of 12. If Fig. 8 illustrates and explains a process of receiving and interpreting slot format indicator information of a terminal when different subcarrier intervals are set in a situation where a normal cyclic prefix is ​​set, Fig. 9 illustrates and explains a process of receiving and interpreting slot format indicator information of a terminal when the same or different subcarrier intervals are set in a situation where different cyclic prefixes are set. It is difficult to apply the method of Fig. 8 to a terminal set with 60 kHz and an extended cyclic prefix as shown in 904 of Fig. 9. This is because there is no situation where a specific symbol of a terminal set with 60 kHz and an extended cyclic prefix as shown in 904 of Fig. 9 is completely included in time or completely coincides with a specific symbol present in 902. However, there is a situation where a specific symbol of a terminal set with 60 kHz and an extended cyclic prefix as shown in 904 of Fig. 9 is completely included in time in a specific symbol present in 900 or spans two or more symbols.

[0158] Therefore, in such a case, when a terminal configured with 60 kHz and extended cyclic prefix receives slot format indicator information based on 15 kHz and normal cyclic prefix, appropriate interpretation of the slot format indicator information is required.

[0159] The slot format indicator information can be interpreted in two ways. In the first method, a terminal configured with 60 kHz and an extended cyclic prefix interprets a slot format structure corresponding to 60 kHz and an extended cyclic prefix through slot format indicator information on the basis of 60 kHz and a normal cyclic prefix. In the second method, a terminal configured with 60 kHz and an extended cyclic prefix interprets a slot format structure corresponding to 60 kHz and an extended cyclic prefix through slot format indicator information on the basis of 15 kHz and a normal cyclic prefix.

[0160] According to the first method, a terminal configured with 60 kHz and extended cyclic prefix 904 interprets the link information for each symbol from the link information for each symbol according to the (reinterpreted) slot format indicator on the basis of 60 kHz and normal cyclic prefix 902. As an example, the 1a' symbol 904 overlaps in time with the 1a and 1b symbols 902. In such a case, the following rules apply: ●The 902 1a symbol and the 902 1b symbol are both downward links. ◎The 1a' symbol of 904 is a downward link ●The 902 1a symbol and the 902 1b symbol are both upward links. ◎The 1a' symbol of 904 is an uplink ●The 902 1a symbol and the 902 1b symbol are both flexible links. ◎The 904 1a' symbol is a flexible link ●The 902 1a symbol is a down link, and the 902 1b symbol is an up link. ◎The 904 1a' symbol is a flexible link (or down link) ● 902 1a symbol is a down link, 902 1b symbol is a flexible link ◎The 904 1a' symbol is a flexible link (or down link) ● 902 1a symbol is a flexible link, 902 1b symbol is an upward link ◎The 904 1a' symbol is a flexible link (or uplink)

[0161] The terminal refers to the rules as described above and determines the symbol link applied to 1a' of 904. Such a method is applicable across all symbols set to 60 kHz and extended cyclic prefix.

[0162] According to the second method, a terminal configured with 60 kHz and extended cyclic prefix of 904 interprets link information for each symbol from link information for each symbol according to 15 kHz and normal cyclic prefix base slot format indicator of 900. As an example, 1a' symbol of 904 is included in 1 symbol of 900 in time, and the link of 1a' symbol is according to the link configured to 1 symbol. As another example, 1d' symbol of 904 overlaps with 1 symbol and 2 symbol of 900 in time. In such a case, the following rules are applied. ●The 900 1 symbol and the 900 2 symbol are both downward links. ◎The 1d' symbol in 904 is a downlink ●The 900 1 symbol and the 900 2 symbol are both upward links. ◎The 1d' symbol in 904 is an upward link ● 900 1 symbol and 900 2 symbol are both flexibly linked ◎The 904 1d' symbol indicates a flexible link. ● 900 1 symbol is a downward link, 900 2 symbol is an upward link ◎The 904 1d' symbol indicates a flexible link (or down link) ● 900 1 symbol is a downward link, 900 2 symbol is a flexible link ◎The 904 1d' symbol indicates a flexible link (or down link) ● 900 1 symbol is flexible link, 900 2 symbol is upward link ◎The 904 1d' symbol indicates a flexible link (or uplink)

[0163] The terminal determines the symbol link applied to 1a and 1d' of 904 by referring to the above-mentioned rule. Such a method can be applied to all symbols set with 60 kHz and extended cyclic prefix. Alternatively, the terminal can receive downlink control information including slot format indicator information based on 60 kHz and extended cyclic prefix applied with the above-mentioned rule through a previously configured downlink physical control channel and make the determination.

[0164] When a specific subcarrier spacing value and an extended cyclic prefix are set, the terminal can set the link information set for each symbol operating on the extended extended prefix basis to one or more symbol basis of the time-overlapping cyclic prefix basis in a situation where the terminal receives slot format indicator information defined on a normal cyclic prefix basis. For example, the link information of a specific symbol 910 based on a specific subcarrier spacing and an extended cyclic prefix can be determined based on the following rule based on the link information of symbols 906 and 908 indicated in the slot format indicator information indicated on the same or different subcarrier spacing and normal cyclic prefix that are time-overlapping with the symbol. ●The 906 symbol and the 908 symbol are both downward links. ◎The 910 symbol is a downward link ●The 906 symbol and the 908 symbol are both upward links. ◎The 910 symbol is an upward link ● 906 symbols and 908 symbols are both flexible links ◎The 910 symbol is a flexible link ●The 906 symbol is a downward link, and the 908 symbol is an upward link. ◎The 910 symbol is a flexible link (or downward link) ● 906 symbol is a downward link, 908 symbol is a flexible link ◎The 910 symbol is a flexible link (or downward link) ● 906 symbol is flexible link, 908 symbol is upward link ◎The 910 symbol is a flexible link (or upward link)

[0165] In the present disclosure, such a rule is named the second rule, and can be applied when the subcarrier spacing set for the 910 symbol is the same as or different from the subcarrier spacing set for the 906 symbol and the 908 symbol. Alternatively, the cyclic prefix set for the 910 symbol is the same as or different from the cyclic prefix set for the 906 symbol and the 908 symbol. As another example, the second rule is also defined as follows. If the 906 symbol and the 908 symbol have the same link, the terminal can expect that the link setting is applied to the 910 symbol as is. If the 906 symbol and the 908 symbol have different links, the terminal can expect that the 910 symbol has a flexible link (or a link of a symbol that overlaps the 910 symbol for a longer time period between the 906 symbol and the 908 symbol) set.

[0166] FIG. 10 is a flowchart illustrating a method for interpreting a data time resource region of a downlink or uplink of a cyclic prefix information based terminal according to another embodiment. 10, the terminal receives cyclic prefix-related information in advance through terminal common or terminal specific upper signaling (1000). The terminal also receives downlink control information through a terminal common or terminal specific downlink control channel that is set in advance (1002). The terminal determines how to interpret a time resource region among resource regions to which uplink data or downlink data included in the downlink control information is assigned (1004).

[0167] If the cyclic prefix-related information previously set in the terminal common or terminal specific upper signaling is a normal cyclic prefix (or if the cyclic prefix-related information is not previously set by the terminal common or terminal specific upper signaling), the terminal interprets type C data time resource information (1006). The type C data time resource information interpretation method is a method in which the terminal receives slot format indicator information set based on a specific subcarrier interval, such as 15 kHz, and interprets link information related to a symbol set based on a subcarrier interval received from the base station by using the first rule.

[0168] If the cyclic prefix related information previously set in the UE common or UE specific higher signaling is the extended cyclic prefix, the UE interprets the D type data time resource information (1008). The D type data time resource information interpretation method is a method in which the UE interprets link information related to the subcarrier interval and the extended cyclic prefix received from the base station by using one of the first rule or the second rule when receiving slot format indicator information set based on a specific subcarrier interval such as 15 kHz. As an example, if the subcarrier interval and the extended cyclic prefix based symbol set in the UE are included in or are the same as one of the symbol indexes of the slot format indicator information set based on the specific subcarrier interval in terms of time, the first rule can be applied. Alternatively, if the subcarrier interval and the extended cyclic prefix based symbol set in the UE span (or are included in) two or more of the symbol indexes of the slot format indicator information set based on the specific subcarrier interval in terms of time, the second rule is applied.

[0169] FIG. 11 is a block diagram showing the internal configuration of a terminal according to an embodiment. Referring to FIG. 11, the terminal may include a transceiver 1110, a memory 1120, and a processor 1130. The transceiver 1110, memory 1120, and processor 1130 of the terminal may operate according to the above-mentioned terminal communication method. However, the components of the terminal are not limited to the above-mentioned examples. For example, the terminal may include more components than the above-mentioned components, or may include fewer components. In addition, the transceiver 1110, memory 1120, and processor 1130 may be embodied in the form of a single chip.

[0170] The transceiver 1110 can transmit and receive signals to and from a base station. Here, the signals may include control information and data. To this end, the transceiver 1110 is also configured with an RF transmitter that up-converts and amplifies the frequency of a signal to be transmitted, and an RF receiver that performs low-noise amplification and down-conversion of a received signal. However, this is only one embodiment of the transceiver 1110, and the components of the transceiver 1110 are not limited to an RF transmitter and an RF receiver.

[0171] In addition, the transceiver 1110 can receive a signal via a wireless channel, output the signal to the processor 1130, and transmit the signal output from the processor 1130 via a wireless channel.

[0172] The memory 1120 can store programs and data necessary for the terminal operation. The memory 1120 can also store control information or data included in a signal acquired by the terminal. The memory 1120 can be configured as a recording medium such as a read-only memory (ROM), a random access memory (RAM), a hard disk, a compact disc read only memory (CD-ROM), and a digital versatile disc (DVD), or a combination of recording media.

[0173] The processor 1130 may control a series of processes so that the terminal operates according to the above-described embodiment. In one embodiment, the processor 1130 may receive a cyclic prefix-related resource configuration and bandwidth interval configuration signal from a base station via the transceiver 1110, interpret the cyclic prefix-related resource configuration and bandwidth interval configuration signal, and control the transceiver 1110 to transmit data in a resource region based on the cyclic prefix-related resource configuration and bandwidth interval configuration.

[0174] FIG. 12 is a block diagram illustrating the structure of a base station according to one embodiment. Referring to FIG. 12, the base station may include a transceiver 1210, a memory 1220, and a processor 1230. The transceiver 1210, memory 1220, and processor 1230 of the base station may operate according to the above-mentioned base station communication method. However, the components of the base station are not limited to the above-mentioned examples. For example, the base station may include more components than the above-mentioned components, or may include fewer components. In addition, the transceiver 1210, memory 1220, and processor 1230 may be embodied in the form of a single chip.

[0175] The transceiver 1210 can transmit and receive signals to and from a terminal. Here, the signals may include control information and data. To this end, the transceiver 1210 is also configured with an RF transmitter that up-converts and amplifies the frequency of a signal to be transmitted, and an RF receiver that performs low-noise amplification and down-conversion of the frequency of a received signal. However, this is only one embodiment of the transceiver 1210, and the components of the transceiver 1210 are not limited to an RF transmitter and an RF receiver.

[0176] In addition, the transceiver 1210 can receive a signal via a wireless channel, output the signal to the processor 1230, and transmit the signal output from the processor 1230 via a wireless channel.

[0177] The memory 1220 may store programs and data necessary for the operation of the base station. The memory 1220 may also store control information or data included in a signal acquired by the base station. The memory 1220 may be configured as a recording medium such as a ROM, a RAM, a hard disk, a CD-ROM, or a DVD, or a combination of recording media.

[0178] The processor 1230 may control a series of processes so that the base station operates according to the above-described embodiment of the present invention. In one embodiment, the processor 1230 may determine a cyclic prefix-related configuration and a bandwidth interval configuration, and generate cyclic prefix-related resource configuration and bandwidth interval configuration information to be transmitted to the terminal. Then, the processor 1230 may transmit the cyclic prefix-related resource configuration and bandwidth interval configuration information to the terminal via the transceiver 1210, and control the terminal to receive data from the resource region in which the cyclic prefix-related resource configuration and the bandwidth interval are configured. In this case, the DCI may indicate that the DCI is the second signal transmission timing information. The processor 1230 may also generate downlink control information (DCI) or higher signaling (e.g., RRC) including the cyclic prefix-related resource configuration and the bandwidth interval configuration. In this case, the DCI or RRC may indicate that the DCI is information on the cyclic prefix-related resource configuration and the bandwidth interval configuration.

[0179] The methods according to the embodiments described in the claims or specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

[0180] In the case of a software implementation, a computer-readable recording medium storing one or more programs (software modules) is provided. The one or more programs stored on the computer-readable recording medium are configured for execution by one or more processors in an electronic device. The one or more programs include instructions for causing the electronic device to perform a method according to an embodiment described in the claims or specification of the present disclosure.

[0181] Such programs (software modules, software) may be stored in RAM, non-volatile memory including flash memory, ROM, electrically erasable programmable read only memory (EEPROM), magnetic disc storage device, compact disc read only memory (CD-ROM), digital versatile disc (DVD), or other form of optical storage device, magnetic cassette, or in a memory configured by a combination of some or all of these. Also, each of the memory configurations may be included in multiples.

[0182] The program may also be stored in an attachable storage device that can be accessed via a communication network such as the Internet, an intranet, a local area network (LAN), a wide LAN (WLAN), or a storage area network (SAN), or a combination thereof. Such a storage device may be connected to a device that performs an embodiment of the present disclosure through an external port. Also, a separate storage device on the communication network may be connected to a device that performs an embodiment of the present disclosure.

[0183] In the specific embodiments of the present disclosure described above, the components included in the invention are expressed in the singular or plural form according to the specific embodiments presented. However, the expressions in the singular or plural form are selected for the convenience of explanation according to the presented situation, and the present disclosure is not limited to the singular or plural form, and even if a component is expressed in the plural form, it can be configured in the singular form, or even if a component is expressed in the singular form, it can be configured in the plural form.

[0184] In addition, the embodiments of the present invention disclosed in the present specification and drawings are presented as specific examples to easily explain the contents of the present invention and to aid in understanding the present invention, and are not intended to limit the scope of the present invention. That is, it is obvious to those skilled in the art in the technical field to which the present invention belongs that other modifications based on the technical idea of ​​the present invention can be implemented. In addition, each embodiment can be combined with each other and operated as necessary. For example, a base station and a terminal may be operated by combining parts of one embodiment different from one embodiment of the present invention. In addition, although the present embodiment has been presented based on the FDD LTE system, other modifications based on the technical idea of ​​the present embodiment may be implemented in other systems such as a TDD LTE system, a 5G, or an NR system.

[0185] It should be understood that the embodiments described herein are to be considered for illustrative purposes only and not for limiting purposes, and the description of features or aspects within each embodiment should be considered generally applicable to other similar features or aspects of other embodiments.

[0186] While the present disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the present disclosure as defined in the following claims and equivalents thereof. [Explanation of symbols]

[0187] 102 OFDM symbols 104 Subcarrier 105 Subframe 106 Slots 108 Resource block (RB) 110 Subcarrier 112 Resource element 114 Radio Frame 202 SC-FDMA symbols 204 Subcarrier 205 Subframe 206 Slots 210 Subcarrier 212 Resource element 1110 Transmitter / receiver 1120 Memory 1130 Processor 1210 Transmitter / receiver 1220 Memory 1230 Processor

Claims

1. A method performed by a terminal in a wireless communication system, comprising: Receive slot format information related to a first subcarrier spacing configuration from the base station, and the first subcarrier spacing is 15*2 ｘ and Receive bandwidth portion configuration information including a second subcarrier spacing configuration from the base station, the second subcarrier spacing being 15*2 ｙ and The flexible symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacings according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ determining the symbols to be soft symbols, where n is yx; The uplink symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacings according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ determining the symbol as an upward link symbol; The downlink symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacing symbols according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ determining the symbol as a downward link symbol, wherein n has a value equal to or greater than 0.

2. The two consecutive ｎ The method of claim 1 , wherein a symbol belongs in time to a symbol of the slot format based on slot format information relating to the first subcarrier spacing configuration.

3. 1. A method performed by a base station in a wireless communication system, comprising: Slot format information related to a first subcarrier spacing configuration is transmitted to the terminal, and the first subcarrier spacing is 15*2 ｘ and Transmitting bandwidth portion configuration information including a second subcarrier spacing configuration to the terminal, the second subcarrier spacing being 15*2 ｙ and The flexible symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacings according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ The symbols are determined to be soft symbols, n is yx, The uplink symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacings according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ The symbol is determined to be an upward link symbol, The downlink symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacing symbols according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ A method in which a symbol is determined to be a downward link symbol, and n has a value equal to or greater than 0.

4. The two consecutive ｎ The method of claim 3 , wherein a symbol belongs in time to a symbol of the slot format based on slot format information relating to the first subcarrier spacing configuration.

5. A terminal operating in a wireless communication system includes a transceiver unit and a processor coupled to the transceiver, the processor comprising: Receive slot format information related to a first subcarrier spacing configuration from the base station, and the first subcarrier spacing is 15*2 ｘ and Receive bandwidth portion configuration information including a second subcarrier spacing configuration from the base station, the second subcarrier spacing being 15*2 ｙ and The flexible symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacings according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ Determine the symbols to be soft symbols, n is yx, The uplink symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacings according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ The downlink symbols constituting the slot format based on the slot format information are determined to be two consecutive subcarrier spacing symbols according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ A terminal determines a symbol to be a downward link symbol, where n has a value equal to or greater than 0.

6. The two consecutive ｎ The terminal of claim 5 , wherein a symbol belongs in time to a symbol of the slot format based on slot format information relating to the first subcarrier spacing configuration.

7. A base station operating in a wireless communication system, comprising: a transceiver unit; a processor coupled to the transceiver, the processor comprising: Slot format information related to a first subcarrier spacing configuration is transmitted to the terminal, and the first subcarrier spacing is 15*2 ｘ and Transmitting bandwidth portion configuration information including a second subcarrier spacing configuration to the terminal, the second subcarrier spacing being 15*2 ｙ and The flexible symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacings according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ The symbols are determined to be soft symbols, n is yx, The uplink symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacing symbols according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ The symbol is determined to be an upward link symbol, The downlink symbols constituting the slot format based on the slot format information are two consecutive subcarrier spacing symbols according to the second subcarrier spacing configuration. ｎ If the two consecutive symbols correspond to ｎ The base station determines that the symbol is a downlink symbol, where n has a value equal to or greater than 0.

8. The two consecutive ｎ The base station of claim 7, wherein a symbol belongs in time to a symbol of the slot format based on slot format information relating to the first subcarrier spacing configuration.

Images