CN116584139A

CN116584139A - Method, apparatus and system for uplink transmission in a wireless communication system

Info

Publication number: CN116584139A
Application number: CN202180084193.1A
Authority: CN
Inventors: 石根永; 崔庚俊; 卢珉锡; 孙周亨; 郭真三
Original assignee: Wilus Institute of Standards and Technology Inc
Current assignee: Wilus Institute of Standards and Technology Inc
Priority date: 2020-10-14
Filing date: 2021-10-14
Publication date: 2023-08-11

Abstract

A method for a terminal to transmit a Physical Uplink Shared Channel (PUSCH) to a base station in a wireless communication system is disclosed. The terminal may receive configuration information for allocating resources for transmitting a Transport Block (TB) through a PUSCH from a base station, and map the TB to a plurality of slots constituting the resources based on the configuration information. Thereafter, the terminal may transmit the TB over a plurality of slots through the PUSCH.

Description

Method, apparatus and system for uplink transmission in a wireless communication system

Technical Field

The present disclosure relates to a wireless communication system. In particular, the present disclosure relates to a method, apparatus and system for determining and transmitting resources of an uplink shared channel.

Background

After commercialization of the fourth generation (4G) communication system, efforts are being made to develop a new fifth generation (5G) communication system in order to meet the increasing demand for wireless data services. The 5G communication system is called a super 4G network communication system, a LTE-after system, or a New Radio (NR) system. In order to achieve a high data transmission rate, 5G communication systems include systems that operate using a millimeter wave (mmWave) band of 6GHz or higher, and include communication systems that operate using a band of 6GHz or lower in terms of ensuring coverage, so that implementation in base stations and terminals is under consideration.

The third generation partnership project (3 GPP) NR system improves the spectral efficiency of the network and enables communication providers to provide more data and voice services over a given bandwidth. Thus, 3GPP NR systems are designed to meet the demand for high-speed data and media transmission in addition to supporting a large amount of voice. The advantages of NR systems are higher throughput and lower latency on the same platform, support for Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD), and low operating costs due to enhanced end user environments and simple architecture.

For more efficient data processing, dynamic TDD of NR systems may use a method for changing the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols that can be used in uplink and downlink according to the data traffic direction of cell users. For example, when there is more downlink traffic than uplink traffic for a cell, the base station may allocate multiple downlink OFDM symbols to a slot (or subframe). Information about the slot configuration should be transmitted to the terminal.

In order to mitigate path loss of radio waves and increase transmission distance of radio waves in millimeter wave band, in 5G communication systems, beamforming, massive multiple input/output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, hybrid beamforming combining analog beamforming and digital beamforming, and massive antenna technology are discussed. Further, for network improvement of the system, in the 5G communication system, technology development is being performed regarding an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra dense network, device-to-device communication (D2D), vehicle-to-everything communication (V2X), a wireless backhaul, a non-terrestrial network communication (NTN), a mobile network, cooperative communication, coordinated multipoint (CoMP), interference cancellation, and the like. Furthermore, in the 5G system, hybrid FSK with QAM modulation (FQAM) and Sliding Window Superposition Coding (SWSC) as Advanced Coding Modulation (ACM) schemes, and Filter Bank Multicarrier (FBMC), non-orthogonal multiple access (NOMA) and Sparse Code Multiple Access (SCMA) as advanced connection techniques are being developed.

Meanwhile, in human-centric connection networks where humans generate and consume information, the internet has evolved into an internet of things (IoT) network that exchanges information between distributed components such as objects. Internet of everything (IoE) technology combining IoT technology with big data processing technology through a connection with a cloud server is also emerging. In order to implement IoT, technical elements such as sensing technology, wired/wireless communication and network infrastructure, service interface technology, and security technology are required, so that technologies such as sensor networks, machine-to-machine (M2M), and machine-type communication (MTC) have been studied in recent years to connect between objects. In an IoT environment, intelligent Internet Technology (IT) services can be provided that collect and analyze data generated from networked objects to create new value in human life. Through the fusion and mixing of existing Information Technology (IT) and various industries, ioT can be applied in fields such as smart homes, smart buildings, smart cities, smart cars or networked cars, smart grids, healthcare, smart appliances and advanced medical services.

Accordingly, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, machine-to-machine (M2M), and Machine Type Communications (MTC) are implemented through technologies such as beamforming, MIMO, and array antennas. The application of the cloud RAN as the big data processing technology described above is an example of a fusion of 5G technology and IoT technology. In general, a mobile communication system is developed to provide a voice service while ensuring activities of users.

However, the mobile communication system is gradually expanding not only a voice service but also a data service, and has now been developed to the extent of providing a high-speed data service. However, in the mobile communication system currently providing services, a more advanced mobile communication system is required due to a resource shortage phenomenon and high-speed service demands of users.

Disclosure of Invention

Technical problem

An aspect of the present disclosure is to provide a method for determining and transmitting resources for data and control information transmitted via an uplink shared channel in a wireless communication system, particularly a cellular wireless communication system, and an apparatus therefor.

Solution to the problem

In a method of transmitting a Physical Uplink Shared Channel (PUSCH) by a User Equipment (UE) to a base station in a wireless communication system, the method may include: receiving configuration information for allocating resources for transmitting Transport Blocks (TBs) via PUSCH from a base station; mapping the TB to a plurality of slots included in the resource based on the configuration information; and transmitting the TB via the PUSCH in a plurality of slots, wherein the PUSCH is multiplexed with different Uplink Control Information (UCI) in each of the plurality of slots, and the number of modulation symbols in each of the plurality of pieces of information included in the different UCI is determined according to a size of the TB scaled based on the plurality of slots or a resource scaled based on the plurality of slots.

Further, in the present disclosure, for a plurality of pieces of information, the number of modulation symbols is sequentially determined in the order of the earliest slot among a plurality of slots in the time domain based on the size of the scaled TB, or is determined according to a resource scaled based on the plurality of slots.

Further, in the present disclosure, the plurality of pieces of information may include a hybrid automatic repeat request (HARQ) -Acknowledgement (ACK)/Negative Acknowledgement (NACK), a Channel State Information (CSI) 1 st part and a CSI 2 nd part, and the number of modulation symbols is determined in an order of the HARQ-ACK/NACK, the CSI 1 st part and the CSI 2 nd part as a first order, a second order and a third order based on the size of the scaled TB, or according to resources scaled based on a plurality of slots.

Further, in the present disclosure, in case the TB includes one or more code blocks, the number of modulation symbols included in each of a plurality of pieces of information in different UCI is determined according to a value obtained by scaling the entire size of the one or more code blocks based on a plurality of slots or according to a resource scaled based on a plurality of slots.

Further, in the present disclosure, the transmission power of the PUSCH in a slot unit is determined based on a value obtained by scaling an overall size of one or more code blocks included in a TB based on a plurality of slots or a resource scaled based on a plurality of slots.

Further, in the present disclosure, PUSCH is repeatedly transmitted according to a Configuration Grant (CG) allocated resource based on configuration information.

Further, in the present disclosure, PUSCH is repeatedly transmitted using a predetermined Redundancy Version (RV) sequence for repeated transmission of PUSCH configured by a base station.

Further, in the present disclosure, the predetermined RV sequence is {0, 0}, and the repeated transmission of PUSCH starts from a slot in which a "0" value of the predetermined RV sequence is configured.

Further, the present disclosure includes a communication module and a processor configured to control the communication module, and the processor is configured to: receiving configuration information for allocating resources for transmitting Transport Blocks (TBs) via a Physical Uplink Shared Channel (PUSCH) from a base station; mapping the TB to a plurality of slots included in the resource based on the configuration information; the method includes transmitting a TB via a PUSCH in a plurality of slots, wherein the PUSCH is multiplexed with different Uplink Control Information (UCI) in each of the plurality of slots, and the number of modulation symbols included in each of pieces of information in UCI of different PUCCHs is determined according to a size of the TB scaled based on a slot in which the UCI is transmitted in the plurality of slots, or according to a resource scaled based on the plurality of slots.

Advantageous effects of the invention

According to embodiments of the present disclosure, a User Equipment (UE) may efficiently determine resources for data and control information desired to be transmitted via an uplink shared channel, and may efficiently transmit the data and the uplink control information to a base station through the uplink shared channel.

Further, in case of a Transport Block (TB) transmission of PUSCH through a plurality of slots, the number of symbols (or bits) of each parameter of UCI of PUCCH multiplexed with PUSCH is determined according to the size of TB scaled based on a single slot in which UCI is transmitted, whereby PUSCH and PUCCH can be effectively multiplexed.

Further, in the case of a TB in which PUSCH is transmitted via a plurality of slots, a Redundancy Version (RV) sequence for repeated transmission of PUSCH is configured to have a predetermined sequence, whereby repeated transmission of PUSCH can be immediately started in the next slot for PUSCH transmission and repeated PUSCH transmission can be effectively performed, although the slot for the first transmission of PUSCH that is repeated is invalid.

Effects obtainable based on the present disclosure are not limited to the above-described effects, and other effects not mentioned will be clearly understood by those skilled in the art based on the description provided below.

Drawings

Fig. 1 illustrates an example of a radio frame structure used in a wireless communication system.

Fig. 2 illustrates an example of a Downlink (DL)/Uplink (UL) slot structure in a wireless communication system.

Fig. 3 is a diagram for explaining physical channels used in a 3GPP system and a typical signal transmission method using the same.

Fig. 4a and 4b illustrate SS/PBCH blocks for initial cell access in a 3GPP NR system.

Fig. 5a and 5b illustrate a procedure for transmitting control information and a control channel in a 3GPP NR system.

Fig. 6 illustrates a control resource set (CORESET) in which a Physical Downlink Control Channel (PDCCH) may be transmitted in a 3GPP NR system.

Fig. 7 illustrates a method for configuring a PDCCH search space in a 3GPP NR system.

Fig. 8 is a conceptual diagram illustrating carrier aggregation.

Fig. 9 is a diagram for explaining signal carrier communication and multicarrier communication.

Fig. 10 is a diagram showing an example in which a cross-carrier scheduling technique is applied.

Fig. 11 is a block diagram illustrating a configuration of a UE and a base station according to an embodiment of the present disclosure.

Fig. 12 illustrates a method of scheduling a physical uplink shared channel in the time domain according to an embodiment of the present disclosure.

Fig. 13 illustrates a method of scheduling a physical uplink shared channel in the frequency domain according to an embodiment of the present disclosure.

Fig. 14 illustrates repeated transmission of a physical uplink shared channel according to an embodiment of the present disclosure.

Fig. 15 and 16 illustrate RE mapping of a physical uplink shared channel according to an embodiment of the present disclosure.

Fig. 17 is a method for determining a Transport Block Size (TBS) by a User Equipment (UE) based on a single slot or a single nominal PUSCH.

Fig. 18 is a diagram illustrating resource allocation to a plurality of slots based on a repeated PUSCH transmission type a according to an embodiment of the present disclosure.

Fig. 19 is a diagram illustrating allocation of resources to multiple nominal PUSCHs based on a repeated PUSCH transmission type B, according to an embodiment of the present disclosure.

Fig. 20 and 21 are diagrams illustrating a method of determining a TBS for a plurality of slots or a plurality of nominal PUSCHs according to an embodiment of the present disclosure.

Fig. 22 and 23 are diagrams illustrating examples of collisions between a plurality of PUCCHs and PUSCHs whose TBSs are determined based on a plurality of slots or a plurality of nominal PUSCHs.

Fig. 24 is a diagram illustrating an example of a method of determining transmission power of PUSCH whose TBS is determined based on a plurality of slots or a plurality of nominal PUSCHs.

Fig. 25 is a diagram illustrating an example of a method of determining PUSCH transmission power according to an embodiment of the present disclosure.

Fig. 26 is a diagram illustrating another example of a method of determining PUSCH transmission power according to an embodiment of the present disclosure.

Fig. 27 is a diagram illustrating a method of determining a transmission occasion of a PUSCH whose TBS is determined based on a plurality of slots or a plurality of nominal PUSCHs according to an embodiment of the present disclosure.

Fig. 28 is a diagram illustrating an example of a method of determining an initial transmission occasion of a PUSCH whose TBS is determined based on a plurality of slots or a plurality of nominal PUSCHs.

Fig. 29 is a diagram illustrating another example of a method of determining an initial transmission occasion of a PUSCH whose TBS is determined based on a plurality of slots or a plurality of nominal PUSCHs according to an embodiment of the present disclosure.

Fig. 30 is a diagram illustrating an example of a method of determining an initial transmission occasion of a PUSCH whose TBS is determined based on a plurality of slots or a plurality of nominal PUSCHs according to an embodiment of the present disclosure.

Fig. 31 is a diagram illustrating another example of a method of determining an initial transmission occasion of a PUSCH whose TBS is determined based on a plurality of slots or a plurality of nominal PUSCHs according to an embodiment of the present disclosure.

Fig. 32 is a flowchart illustrating an example of operation of a UE according to an embodiment of the present disclosure.

Detailed Description

The terms used in the specification adopt general terms currently widely used as much as possible by considering functions in the present invention, but may be changed according to the intention, habit, and appearance of new technology of those skilled in the art. In addition, in a specific case, there are terms arbitrarily selected by the applicant, and in this case, the meaning thereof will be described in the corresponding description section of the present invention. Therefore, it is intended that the terms used in the specification be construed not only based on the names of the terms but also based on the essential meanings of the terms and contents throughout the specification.

Throughout the specification and claims which follow, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "electrically connected" to the other element through a third element. In addition, unless explicitly described to the contrary, the word "comprising" will be understood to imply the inclusion of stated elements but not the exclusion of any other elements. Furthermore, in some exemplary embodiments, limitations such as "greater than or equal to" or "less than or equal to" based on a particular threshold, respectively, may be appropriately replaced with "greater than" or "less than," respectively.

The following techniques may be used in various wireless access systems: such as Code Division Multiple Access (CDMA), frequency Division Multiple Access (FDMA), time Division Multiple Access (TDMA), orthogonal Frequency Division Multiple Access (OFDMA), single carrier-FDMA (SC-FDMA), and the like. CDMA may be implemented by wireless technology such as Universal Terrestrial Radio Access (UTRA) or CDMA 2000. TDMA may be implemented by wireless technologies such as global system for mobile communications (GSM)/General Packet Radio Service (GPRS)/enhanced data rates for GSM evolution (EDGE). OFDMA may be implemented by wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, evolved UTRA (E-UTRA), and the like. UTRA is part of Universal Mobile Telecommunications System (UMTS). The third generation partnership project (3 GPP) Long Term Evolution (LTE) is part of evolved UMTS (E-UMTS) using evolved UMTS terrestrial radio access (E-UTRA), and LTE-advanced (a) is an evolved version of 3GPP LTE. The 3GPP New Radio (NR) is a system designed separately from LTE/LTE-a and is a system for supporting an enhanced mobile broadband (eMBB), ultra-reliable low-delay communication (URLLC), and large-scale machine type communication (mctc) service, which are requirements of IMT-2020. For clarity of description, the 3GPP NR is mainly described, but the technical ideas of the present invention are not limited thereto.

Unless otherwise specified in the present specification, a base station may refer to a next generation node B (gNB) as defined in 3GPP NR. Further, unless otherwise indicated, a terminal may refer to a User Equipment (UE). Hereinafter, in order to facilitate understanding of the description, each content is individually divided into embodiments and described, but each of the embodiments may be used in combination with each other. In the present disclosure, the configuration of the UE may indicate the configuration by the base station. In particular, the base station may transmit a channel or signal to the UE to configure the operation of the UE or parameter values used in the wireless communication system.

Referring to fig. 1, a radio frame (or radio frame) used in a 3gpp NR system may have a frame length of 10ms (Δf _max N _f /100)*T _c ) Is a length of (c). Further, the radio frame includes 10 Subframes (SFs) of equal size. Here, Δf _max ＝480*10 ³ Hz，N _f ＝4096，T _c ＝1/(Δf _ref *N _f,ref )，Δf _ref ＝15*10 ³ Hz, and N _f,ref =2048. Numbers from 0 to 9 may be allocated to 10 subframes within one radio frame, respectively. Each subframe is 1ms in length and may include one or more slots according to a subcarrier spacing. More specifically, in 3GPP NR systems, the subcarrier spacing that can be used is 15 x 2 ^μ kHz, and μ can have values of μ=0, 1, 2, 3, 4 as subcarrier spacing configurations. That is, 15kHz, 30kHz, 60kHz, 120kHz, and 240kHz may be used for subcarrier spacing. One subframe of length 1ms may include 2 ^μ And each time slot. In this case, each time slot has a length of 2 ^-μ ms. Can be from 0 to 2 ^μ The numbers of-1 are respectively allocated to 2 in one subframe ^μ And each time slot. In addition, it is possible to add from 0 to 10 x 2 ^μ The numbers of-1 are respectively assigned to time slots within one radio frame. The time resources may be distinguished by at least one of a radio frame number (also referred to as a radio frame index), a subframe number (also referred to as a subframe index), and a slot number (or slot index).

Fig. 2 illustrates an example of a Downlink (DL)/Uplink (UL) slot structure in a wireless communication system. In particular, fig. 2 shows the structure of a resource grid of a 3GPP NR system.

There is one resource grid per antenna port. Referring to fig. 2, a slot includes a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and a plurality of Resource Blocks (RBs) in a frequency domain. One OFDM symbol also refers to one symbol interval. OFDM symbols may be abbreviated as symbols unless otherwise specified. One RB includes 12 consecutive subcarriers in the frequency domain. Referring to fig. 2, the signal transmitted from each slot may be composed of N ^size,μ _grid,x *N ^RB _sc Sub-carriers and N ^slot _symb A resource grid of OFDM symbols. Here, x=dl when the signal is a DL signal, and x=ul when the signal is an UL signal. N (N) ^size,μ _grid,x Represents the number of Resource Blocks (RBs) (x is DL or UL) according to the subcarrier spacing component μ, and N ^slot _symb Representing the number of OFDM symbols in the slot. N (N) ^RB _sc Is the number of subcarriers constituting one RB and N ^RB _sc =12. The OFDM symbol may be referred to as a cyclic shift OFDM (CP-OFDM) symbol or a discrete fourier transform spread OFDM (DFT-s-OFDM) symbol according to a multiple access scheme.

The number of OFDM symbols included in one slot may vary according to the length of a Cyclic Prefix (CP). For example, in the case of a normal CP, one slot includes 14 OFDM symbols, but in the case of an extended CP, one slot may include 12 OFDM symbols. In a particular embodiment, extended CP can only be used at 60kHz subcarrier spacing. In fig. 2, one slot is configured with 14 OFDM symbols as an example for convenience of description, but embodiments of the present disclosure may be applied to slots having different numbers of OFDM symbols in a similar manner. Referring to fig. 2, each OFDM symbol includes N in the frequency domain ^size,μ _grid,x *N ^RB _sc Sub-carriers. The types of subcarriers may be divided into data subcarriers for data transmission, reference signal subcarriers for transmission of reference signals, and guard bands. The carrier frequency is also referred to as the center frequency (fc).

One RB may be composed of N in the frequency domain ^RB _sc (e.g., 12) consecutive sub-carriers. For reference, a resource configured with one OFDM symbol and one subcarrier may be referred to as a Resource Element (RE) or tone. Thus, one RB can be configured with N ^slot _symb *N ^RB _sc And resource elements. Each resource element in the resource grid can be uniquely defined by a pair of indices (k, l) in one slot. k may be from 0 to N in the frequency domain ^size,μ _grid,x *N ^RB _sc -1, and l may be from 0 to N in the time domain ^slot _symb -1 assigned index.

For the UE to receive signals from or transmit signals to the base station, the time/frequency of the UE may be synchronized with the time/frequency of the base station. This is because when the base station and the UE are synchronized, the UE can determine time and frequency parameters necessary to demodulate the DL signal at the correct time and transmit the UL signal.

Each symbol of a radio frame used in Time Division Duplex (TDD) or unpaired spectrum may be configured with at least one of a DL symbol, an UL symbol, and a flexible symbol. A radio frame used as a DL carrier in Frequency Division Duplex (FDD) or paired spectrum may be configured with DL symbols or flexible symbols, and a radio frame used as an UL carrier may be configured with UL symbols or flexible symbols. In DL symbols, DL transmission is possible, but UL transmission is not possible. In UL symbols, UL transmission is possible, but DL transmission is not possible. The flexible symbols may be determined to be used as DL or UL according to the signal.

Information about the type of each symbol, i.e., information representing any one of DL symbols, UL symbols, and flexible symbols, may be configured with a cell-specific or common Radio Resource Control (RRC) signal. Furthermore, information about the type of each symbol may be additionally configured with UE-specific or dedicated RRC signals. The base station informs i) a period of a cell-specific slot configuration, ii) a number of slots having only DL symbols from a beginning of the period of the cell-specific slot configuration, iii) a number of DL symbols from a first symbol of a slot immediately after the slot having only DL symbols, iv) a number of slots having only UL symbols from an end of the period of the cell-specific slot configuration, and v) a number of UL symbols from a last symbol of the slot immediately before the slot having only UL symbols, by using a cell-specific RRC signal. Here, the symbol not configured with any one of the UL symbol and the DL symbol is a flexible symbol.

When the information on the symbol type is configured with a UE-specific RRC signal, the base station may signal whether the flexible symbol is a DL symbol or an UL symbol with a cell-specific RRC signal. In this case, the UE-specific RRC signal cannot change the DL symbol or UL symbol configured with the cell-specific RRC signal to another symbol type. The UE-specific RRC signal may signal the N of the corresponding slot of each slot ^slot _symb The number of DL symbols among the symbols and the N of the corresponding slot ^slot _symb The number of UL symbols among the symbols. In this case, DL symbols of the slot may be sequentially configured with first to i-th symbols of the slot. In addition, UL symbols of the slot may be successively configured with j-th to last symbols of the slot (where i<j) A. The invention relates to a method for producing a fibre-reinforced plastic composite In a slot, a symbol that is not configured with any one of UL symbols and DL symbols is a flexible symbol.

The type of symbol configured with the above RRC signal may be referred to as a semi-static DL/UL configuration. In the semi-static DL/UL configuration previously configured with the RRC signal, the flexible symbols may be indicated as DL symbols, UL symbols, or flexible symbols by dynamic Slot Format Information (SFI) transmitted on a Physical DL Control Channel (PDCCH). In this case, the DL symbol or UL symbol configured with the RRC signal is not changed to another symbol type. Table 1 illustrates dynamic SFIs that a base station can indicate to a UE.

TABLE 1

In table 1, D represents DL symbols, U represents UL symbols, and X represents flexible symbols. As shown in table 1, up to two DL/UL switches may be allowed in one slot.

Fig. 3 is a diagram for explaining physical channels used in a 3GPP system (e.g., NR) and a typical signal transmission method using the physical channels.

If the power of the UE is turned on or the UE camps on a new cell, the UE performs an initial cell search (S101). Specifically, the UE may synchronize with the BS in the initial cell search. To this end, the UE may receive a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) from the base station to synchronize with the base station and obtain information such as a cell ID. Thereafter, the UE can receive a physical broadcast channel from the base station and obtain broadcast information in the cell.

After the initial cell search is completed, the UE receives a Physical Downlink Shared Channel (PDSCH) according to a Physical Downlink Control Channel (PDCCH) and information in the PDCCH, so that the UE can obtain more specific system information than the system information obtained through the initial cell search (S102). Here, the system information received by the UE is cell common system information in Radio Resource Control (RRC) for the UE to operate properly at the physical layer, and is referred to as residual system information (RSMI) or System Information Block (SIB) 1.

When the UE initially accesses the base station or does not have radio resources for signal transmission (when the UE is in rrc_idle mode), the UE may perform a random access procedure for the base station (operations S103 to S106). First, the UE may transmit a preamble through a Physical Random Access Channel (PRACH) (S103) and receive a Random Access Response (RAR) message for the preamble from the base station through a PDCCH and a corresponding PDSCH (S104). In this case, the preamble in steps S103 and S104 may be described as message 1 (Msg 1), and the random access response may be described as a response message or message 2 (Msg 2). When the UE receives the valid random access response message, the UE transmits data including an identifier of the UE and the like to the base station through a Physical Uplink Shared Channel (PUSCH) indicated by an UL grant transmitted from the base station through the PDCCH (S105). In this case, the data including the own identifier of step S105 and the PUSCH including the data may be described as message 3 (Msg 3). Further, the PUSCH including the data may be described as a message 3PUSCH (Msg 3 PUSCH). Next, the UE waits for reception of PDCCH as an indication of the base station for collision resolution. When the UE successfully receives the PDCCH through its own identifier and receives the corresponding PDSCH (S106), the random access procedure ends. In this case, the PDCCH and PDSCH of step S106 may be described as message 4 (Msg 4). During the random access procedure, the UE may obtain UE-specific system information in the RRC layer that is necessary for the UE to operate properly at the physical layer. When the UE obtains UE-specific system information from the RRC layer, the UE enters an RRC CONNECTED mode.

The RRC layer is used for message generation and management for control between the UE and the Radio Access Network (RAN). More specifically, in the RRC layer, the base station and the UE may perform broadcasting of cell system information, delivery management of paging messages, mobility management and handover, measurement reporting and control thereof, UE capability management, and storage management including existing management necessary for all UEs in a cell. In general, since an update of a signal transmitted from the RRC layer (hereinafter, referred to as an RRC signal) is longer than a transmission/reception period (i.e., transmission time interval, TTI) in the physical layer, the RRC signal can be maintained for a long time.

After the above procedure, the UE receives a PDCCH/PDSCH (S107) and transmits a Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel (PUCCH) (S108) as a general UL/DL signal transmission procedure. In particular, the UE may receive Downlink Control Information (DCI) through the PDCCH. The DCI may include control information such as resource allocation information for the UE. In addition, the format of DCI may vary according to the intended use. Uplink Control Information (UCI) transmitted by a UE to a base station through UL includes DL/UL ACK/NACK signals, channel Quality Indicators (CQIs), precoding Matrix Indexes (PMIs), rank Indicators (RI), and the like. Here, CQI, PMI, and RI may be included in Channel State Information (CSI). In the 3GPP NR system, the UE can transmit control information such as the HARQ-ACK and CSI described above through the PUSCH and/or the PUCCH.

When power is turned on or a new cell is desired to be accessed, the UE may acquire time and frequency synchronization with the cell and perform an initial cell search procedure. The UE may detect the physical cell identity N of the cell during the cell search procedure ^cell _ID . To this end, the UE may receive synchronization signals, e.g., a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), from the base station and synchronize with the base station. In this case, the UE can obtain information such as a cell Identification (ID).

Referring to fig. 4a, the Synchronization Signal (SS) will be described in more detail. The synchronization signals can be classified into PSS and SSS. The PSS may be used to obtain time domain synchronization and/or frequency domain synchronization, such as OFDM symbol synchronization and slot synchronization. SSS can be used to obtain frame synchronization and cell group ID. Referring to fig. 4a and table 2, the ss/PBCH block can be configured with 20 RBs (=240 subcarriers) in succession on a frequency axis and can be configured with 4 OFDM symbols in succession on a time axis. In this case, in the SS/PBCH block, PSS is transmitted in the first OFDM symbol and SSs is transmitted in the third OFDM symbol through 56 th to 182 th subcarriers. Here, the lowest subcarrier index of the SS/PBCH block is numbered from 0. In the first OFDM symbol in which the PSS is transmitted, the base station transmits no signal through the remaining subcarriers, i.e., the 0 th to 55 th subcarriers and the 183 th to 239 th subcarriers. Further, in the third OFDM symbol in which SSS is transmitted, the base station does not transmit signals through 48 th to 55 th subcarriers and 183 th to 191 th subcarriers. The base station transmits a Physical Broadcast Channel (PBCH) through the remaining REs in the SS/PBCH block except for the above signals.

TABLE 2

The SS allows a total of 1008 unique physical layer cell IDs to be grouped into 336 physical layer cell identifier groups by a combination of three PSS and SSs, each group comprising three unique identifiers, in particular such that each physical layer cell ID will be only part of one physical layer cell identifier group. Thus, physical layer cell ID N ^cell _ID ＝3N ⁽¹⁾ _ID +N ⁽²⁾ _ID Can be defined by an index N ranging from 0 to 335 indicating the physical layer cell identifier group ⁽¹⁾ _ID And index N indicating that physical layer identifiers in the physical layer cell identifier group range from 0 to 2 ⁽²⁾ _ID Uniquely defined. The UE may detect the PSS and identify one of three unique physical layer identifiers. Further, the UE can detect the SSS and identify one of 336 physical layer cell IDs associated with the physical layer identifier. In this case, sequence d of PSS _PSS (n) is as follows.

d _PSS (n)＝1-2x(m)

0≤n＜127

Here, x (i+7) = (x (i+4) +x (i)) mod2

And is given as [ x (6) x (5) x (4) x (3) x (2) x (1) x (0) ]= [ 11 10 11 0].

Furthermore, sequence d of SSS _SSS (n) is as follows.

d _SSS (n)＝[1-2x ₀ ((n+m ₀ )mod 127)][1-2x ₁ ((n+m ₁ )mod127)]

0≤n＜127

Here the number of the elements is the number,and is given as

[x ₀ (6) x ₀ (5) x ₀ (4) x ₀ (3) x ₀ (2) x ₀ (1) x ₀ (0)]＝[0 0 00 0 0 1]

[x ₁ (6) x ₁ (5) x ₁ (4) x ₁ (3) x ₁ (2) x ₁ (1) x ₁ (0)]＝[0 0 0 0 0 0 1]

A radio frame having a length of 10ms may be divided into two half frames having a length of 5 ms. Referring to fig. 4b, a slot in which an SS/PBCH block is transmitted in each field will be described. The time slot in which the SS/PBCH block is transmitted may be either of cases A, B, C, D and E. In case a, the subcarrier spacing is 15kHz and the starting point in time of the SS/PBCH block is the (2, 8 +14 x n) th symbol. In this case, n=0 or 1 at a carrier frequency of 3GHz or less. Further, at carrier frequencies above 3GHz and below 6GHz, n=0, 1, 2,3 may be possible. In case B, the subcarrier spacing is 30kHz and the starting time point of the SS/PBCH block is {4,8,16,20} +28 x n. In this case, n=0 at a carrier frequency of 3GHz or less. Further, n=0, 1 may be possible at carrier frequencies above 3GHz and below 6 GHz. In case C, the subcarrier spacing is 30kHz and the starting point in time of the SS/PBCH block is the (2, 8 +14 x n) th symbol. In this case, n=0 or 1 at a carrier frequency of 3GHz or less. Further, at carrier frequencies above 3GHz and below 6GHz, n=0, 1, 2,3 may be possible. In case D, the subcarrier spacing is 120kHz and the starting point in time of the SS/PBCH block is the ({ 4,8,16,20} +28 x n) th symbol. In this case, n=0, 1, 2,3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18 at a carrier frequency of 6GHz or higher. In case E, the subcarrier spacing is 240kHz and the starting point in time of the SS/PBCH block is the ({ 8,12,16,20,32,36,40,44} +56 x n) th symbol. In this case, n=0, 1, 2,3, 5, 6, 7, 8 at a carrier frequency of 6GHz or higher.

Fig. 5a and 5b illustrate a procedure of transmitting control information and a control channel in a 3GPP NR system. Referring to fig. 5a, the base station may add a Cyclic Redundancy Check (CRC) masked (e.g., exclusive or operation) with a Radio Network Temporary Identifier (RNTI) to control information (e.g., downlink Control Information (DCI)) (S202). The base station may scramble the CRC with an RNTI value determined according to the purpose/destination of each control information. The common RNTI used by the one or more UEs can include at least one of a system information RNTI (SI-RNTI), a paging RNTI (P-RNTI), a random access RNTI (RA-RNTI), and a transmit power control RNTI (TPC-RNTI). Further, the UE-specific RNTI may include at least one of a cell temporary RNTI (C-RNTI) and a CS-RNTI. Thereafter, the base station may perform rate matching according to the amount of resources for PDCCH transmission (S206) after performing channel coding (e.g., polarity coding) (S204). Thereafter, the base station may multiplex DCI based on a PDCCH structure based on Control Channel Elements (CCEs) (S208). Further, the base station may apply additional procedures such as scrambling, modulation (e.g., QPSK), interleaving, etc. to the multiplexed DCI (S210), and then map the DCI to the resources to be transmitted. A CCE is a basic resource element for PDCCH, and one CCE may include a plurality of (e.g., six) Resource Element Groups (REGs). One REG may be configured with multiple (e.g., 12) REs. The number of CCEs for one PDCCH may be defined as an aggregation level. In a 3GPP NR system, an aggregation level of 1, 2, 4, 8, or 16 can be used. Fig. 5b is a diagram related to multiplexing of CCE aggregation levels and PDCCHs, and illustrates types of CCE aggregation levels for one PDCCH and CCEs transmitted in a control region according thereto.

CORESET is a time-frequency resource in which a PDCCH (i.e., a control signal for a UE) is transmitted. Furthermore, a search space to be described later may be mapped to one CORESET. Thus, the UE may monitor the time-frequency domain designated as CORESET instead of monitoring all frequency bands for PDCCH reception and decode the PDCCH mapped to CORESET. The base station may configure one or more CORESETs for each cell to the UE. CORESET may be configured with up to three consecutive symbols on the time axis. Further, CORESET may be configured in units of six consecutive PRBs on the frequency axis. In the embodiment of fig. 5, CORESET #1 is configured with contiguous PRBs, while CORESET #2 and CORESET #3 are configured with non-contiguous PRBs. CORESET can be located in any symbol in a slot. For example, in the embodiment of FIG. 5, CORESET#1 starts with the first symbol of the slot, CORESET#2 starts with the fifth symbol of the slot, and CORESET#9 starts with the ninth symbol of the slot.

Fig. 7 illustrates a method for setting a PUCCH search space in a 3GPP NR system.

For transmitting the PDCCH to the UE, each CORESET may have at least one search space. In embodiments of the present disclosure, the search space is a set of all time-frequency resources (hereinafter PDCCH candidates) that can be used to transmit the PDCCH of the UE. The search space may include a common search space that requires UEs of the 3GPP NR to search together and a terminal-specific search space or a UE-specific search space that requires a specific UE to search. In the common search space, UEs may monitor PDCCHs set such that all UEs in a cell belonging to the same base station search in common. Furthermore, a UE-specific search space may be set for each UE such that the UE monitors PDCCHs allocated to each UE at search space positions different according to the UE. In the case of UE-specific search spaces, the search spaces between UEs may be partially overlapped and allocated due to a limited control region in which PDCCHs may be allocated. Monitoring the PDCCH includes blind decoding the PDCCH candidates in the search space. When blind decoding is successful, it may be expressed as (successfully) detecting/receiving a PDCCH, and when blind decoding is failed, it may be expressed as not detecting/not receiving or not successfully detecting/receiving a PDCCH.

For convenience of explanation, a PDCCH scrambled with a Group Common (GC) RNTI previously known to one or more UEs in order to transmit DL control information to the one or more UEs is referred to as a Group Common (GC) PDCCH or a common PDCCH. In addition, a PDCCH scrambled with an RNTI of a specific terminal that the specific UE already knows in order to transmit UL scheduling information or DL scheduling information to the specific UE is referred to as a PDCCH of the specific UE. The common PDCCH may be included in the common search space, and the UE-specific PDCCH may be included in the common search space or the UE-specific PDCCH.

The base station may signal information about resource allocation of a Paging Channel (PCH) and a downlink shared channel (DL-SCH) as transport channels (i.e., DL grant) or information about resource allocation of an uplink shared channel (UL-SCH) and a hybrid automatic repeat request (HARQ) (i.e., UL grant) to each UE or UE group through the PDCCH. The base station may transmit the PCH transport block and the DL-SCH transport block through the PDSCH. The base station may transmit data excluding specific control information or specific service data through the PDSCH. In addition, the UE may receive data excluding specific control information or specific service data through the PDSCH.

The base station may include information on to which UE(s) PDSCH data is transmitted and how the PDSCH data is to be received and decoded by the corresponding UE in the PDCCH, and transmit the PDCCH. For example, assume that DCI transmitted on a specific PDCCH is CRC-masked with RNTI "a" and the DCI indicates that PDSCH is allocated to radio resource "B" (e.g., frequency location) and indicates transport format information "C" (e.g., transport block size, modulation scheme, coding information, etc.). The UE monitors the PDCCH using RNTI information possessed by the UE. In this case, if there is a UE performing blind decoding of the PDCCH using the "a" RNTI, the UE receives the PDCCH and receives PDSCH indicated by "B" and "C" through information of the received PDCCH.

Table 3 shows an embodiment of a Physical Uplink Control Channel (PUCCH) used in a wireless communication system.

TABLE 3

PUCCH format	Length of OFDM symbol	Number of bits
			0	1-2	≤2
1	4-14	≤2
			2	1-2	＞2
3	4-14	＞2
			4	4-14	＞2

The PUCCH may be used to transmit the following UL Control Information (UCI).

-a Scheduling Request (SR): information for requesting UL-SCH resources.

-HARQ-ACK: a response to PDCCH (indicating DL SPS release) and/or a response to DL Transport Block (TB) on PDSCH. The HARQ-ACK indicates whether information transmitted on the PDCCH or PDSCH is received. The HARQ-ACK response includes a positive ACK (abbreviated ACK), a negative ACK (hereinafter NACK), discontinuous Transmission (DTX), or NACK/DTX. Here, the term HARQ-ACK is used in combination with HARQ-ACK/NACK and ACK/NACK. Generally, an ACK may be represented by a bit value of 1, while a NACK may be represented by a bit value of 0.

-Channel State Information (CSI): feedback information about DL channels. The UE generates it based on CSI-Reference Signals (RSs) transmitted by the base station. Multiple Input Multiple Output (MIMO) -related feedback information includes a Rank Indicator (RI) and a Precoding Matrix Indicator (PMI). The CSI can be divided into CSI part 1 and CSI part 2 according to information indicated by the CSI.

In the 3GPP NR system, five PUCCH formats may be used to support various service scenarios, various channel environments, and frame structures.

PUCCH format 0 is a format capable of transmitting 1-bit or 2-bit HARQ-ACK information or SR. PUCCH format 0 can be transmitted through one or two OFDM symbols on the time axis and one PRB on the frequency axis. When PUCCH format 0 is transmitted in two OFDM symbols, the same sequence on the two symbols may be transmitted through different RBs. In this case, the sequence may be a Cyclic Shift (CS) sequence from a base sequence for PUCCH format 0. With this, the UE can obtain a frequency diversity gain. Specifically, the UE may be based on M _bit Bits UCI (M) _bit =1 or 2) to determine a Cyclic Shift (CS) value m _cs . Furthermore, wherein the base sequence of length 12 is based on a predetermined CS value m _cs The cyclically shifted sequence may be mapped to 1 OFDM symbol and 12 REs of 1 RB and transmitted. When the number of cyclic shifts available to the UE is 12 and M _bit When=1, 1-bit UCI 0 and 1 may be mapped to two cyclic shift sequences having a difference of cyclic shift values of 6, respectively. In addition, when M _bit When=2, 2 bits UCI 00, 01, 11, and 10 may be mapped to four cyclic shift sequences in which the difference of cyclic shift values is 3, respectively.

PUCCH format 1 may deliver 1-bit or 2-bit HARQ-ACK information or SRs. PUCCH format 1 may be transmitted through consecutive OFDM symbols on the time axis and one PRB on the frequency axis. Here, the number of OFDM symbols occupied by PUCCH format 1 may be one of 4 to 14. More specifically, can be applied to M _bit UCI of=1 is BPSK modulated. The UE may utilize Quadrature Phase Shift Keying (QPSK) for M _bit UCI of=2. The signal is obtained by multiplying the modulated complex-valued symbol d (0) by a sequence of length 12. In this case, the sequence may be a base sequence for PUCCH format 0. The UE expands the even-numbered OFDM symbols to which PUCCH format 1 is allocated by a time axis Orthogonal Cover Code (OCC) to transmit the obtained signal. PUCCH format 1 determines the maximum number of different UEs multiplexed in one RB according to the length of OCC to be used. Demodulation reference signals (DMRS) may be extended with OCC and mapped to odd-numbered OFDM symbols of PUCCH format 1.

PUCCH format 2 may deliver UCI over 2 bits. PUCCH format 2 may be transmitted through one or two OFDM symbols on the time axis and one or more RBs on the frequency axis. When PUCCH format 2 is transmitted in two OFDM symbols, sequences transmitted in different RBs through the two OFDM symbols may be identical to each other. Here, the sequence may be a plurality of modulated complex-valued symbols d (0), -a, d (M _symbol -1). Here, M _symbol May be M _bit /2. Through this, the UE can obtain a frequency diversity gain. More specifically, for M _bit Bits UCI (M) _bit 2) bit-level scrambling, QPSK modulation, and mapping it to RBs of one or two OFDM symbols. Here, the number of RBs may be one of 1 to 16.

PUCCH format 3 or PUCCH format 4 may deliver UCI exceeding 2 bits. PUCCH format 3 or PUCCH format 4 may be transmitted through consecutive OFDM symbols on the time axis and one PRB on the frequency axis. The number of OFDM symbols occupied by PUCCH format 3 or PUCCH format 4 may be one of 4 to 14. Specifically, the UE utilizes-Binary Phase Shift Keying (BPSK) or QPSK versus M _bit Bits UCI (M) _bit >2) Modulated to generate complex-valued symbols d (0) to d (M _symb -1). Here, when pi/2-BPSK is used, M _symb ＝M _bit And when QPSK is used, M _symb ＝M _bit /2. The UE may not apply block unit extension to PUCCH format 3. However, the UE may apply block unit spreading to one RB (i.e., 12 subcarriers) using a pre dft-OCC of length 12, so that PUCCH format 4 may have two or four multiplexing capabilities. The UE performs transmit precoding (or DFT precoding) on the spread signal and maps it to each RE to transmit the spread signal.

In this case, the number of RBs occupied by PUCCH format 2, PUCCH format 3 or PUCCH format 4 may be determined according to the length of UCI transmitted by the UE and the maximum coding rate. When the UE uses PUCCH format 2, the UE may transmit HARQ-ACK information and CSI information together through the PUCCH. When the number of RBs that the UE can transmit is greater than the maximum number of RBs that the PUCCH format 2, PUCCH format 3, or PUCCH format 4 can use, the UE can transmit only the remaining UCI information without transmitting some UCI information according to the priority of the UCI information.

PUCCH format 1, PUCCH format 3, or PUCCH format 4 may be configured by an RRC signal to indicate frequency hopping in a slot. When frequency hopping is configured, an index of RBs to be frequency hopped can be configured with an RRC signal. When PUCCH format 1, PUCCH format 3, or PUCCH format 4 is transmitted through N OFDM symbols of the time axis, the first hop may have floor (N/2) OFDM symbols and the second hop may have ceiling (N/2) OFDM symbols.

PUCCH format 1, PUCCH format 3, or PUCCH format 4 may be configured to be repeatedly transmitted in a plurality of slots. In this case, the number K of slots in which the PUCCH is repeatedly transmitted may be configured by an RRC signal. The repeatedly transmitted PUCCH must start with an OFDM symbol at a constant position in each slot and have a constant length. When one OFDM symbol among OFDM symbols of a slot in which the UE should transmit the PUCCH is indicated as a DL symbol through an RRC signal, the UE may not transmit the PUCCH in the corresponding slot and delay transmission of the PUCCH to the next slot to transmit the PUCCH.

Meanwhile, in the 3GPP NR system, the UE may perform transmission/reception using a bandwidth less than or equal to that of a carrier (or cell). To this end, the UE may be configured with a bandwidth part (BWP) consisting of a continuous bandwidth of a part of the bandwidth of the carrier. A UE operating according to TDD or in unpaired spectrum may receive up to four DL/UL BWP pairs for one carrier (or cell). In addition, the UE may activate one DL/UL BWP pair. A UE operating according to FDD or operating in a paired spectrum may receive up to 4 DL BWP on a downlink carrier (or cell) and up to 4 UL BWP on an uplink carrier (or cell). The UE may activate one DL BWP and UL BWP for each carrier (or cell). The UE may not receive or transmit in time-frequency resources other than the activated BWP. The activated BWP may be referred to as an active BWP.

The base station may indicate an activated BWP among BWPs configured by the UE through Downlink Control Information (DCI). BWP indicated by DCI is activated and BWP of other configuration is deactivated. In a carrier (or cell) operating in TDD, a base station may include a Bandwidth Part Indicator (BPI) indicating an activated BWP in DCI scheduling PDSCH or PUSCH to change a DL/UL BWP pair of a UE. The UE may receive DCI scheduling PDSCH or PUSCH and may identify an activated DL/UL BWP pair based on BPI. In case of a downlink carrier (or cell) operating in FDD, the base station may include a BPI indicating an activated BWP in DCI of the scheduled PDSCH to change the DL BWP of the UE. In the case of an uplink carrier (or cell) operating in FDD, the base station may include a BPI indicating an activated BWP in DCI of the scheduled PUSCH to change UL BWP of the UE.

Fig. 8 is a conceptual diagram illustrating carrier aggregation.

Carrier aggregation is a method in which a UE uses a plurality of frequency blocks or (in a logical sense) cells configured with UL resources (or component carriers) and/or DL resources (or component carriers) as one large logical band in order for a wireless communication system to use a wider frequency band. One component carrier may also be referred to as a term called primary cell (PCell) or secondary cell (SCell) or primary SCell (PScell). Hereinafter, however, for convenience of description, the term "component carrier" is used.

Referring to fig. 8, as an example of the 3GPP NR system, the entire system band may include at most 16 component carriers, and each component carrier may have a bandwidth of at most 400 MHz. The component carriers may include one or more physically contiguous subcarriers. Although each component carrier is shown in fig. 8 as having the same bandwidth, this is merely an example, and each component carrier may have a different bandwidth. In addition, although each component carrier is shown as being adjacent to each other on the frequency axis, the drawing is logically shown, and each component carrier may be physically adjacent to each other or may be spaced apart.

A different center frequency may be used for each component carrier. In addition, one common center frequency may be used in physically adjacent component carriers. Assuming that all component carriers are physically adjacent in the embodiment of fig. 8, the center frequency a may be used in all component carriers. In addition, the center frequency a and the center frequency B can be used in each component carrier, assuming that the respective component carriers are not physically adjacent to each other.

When the total system band is extended by carrier aggregation, a band for communication with each UE can be defined in units of component carriers. UE a may use 100MHz as a total system band and perform communication using all five component carriers. UE B ₁ ～B ₅ Communication can be performed using only a 20MHz bandwidth and using one component carrier. UE C ₁ And C ₂ Communication may be performed using a 40MHz bandwidth and using two component carriers, respectively. The two component carriers may or may not be logically/physically contiguous. UE C ₁ Indicating the use of two non-adjacent component carriers, while UE C ₂ A case where two adjacent component carriers are used is shown.

Fig. 9 is a diagram for explaining single carrier communication and multi-carrier communication. In particular, fig. 9 (a) shows a single carrier subframe structure and fig. 9 (b) shows a multi-carrier subframe structure.

Referring to fig. 9 (a), in the FDD mode, a general wireless communication system may perform data transmission or reception through one DL frequency band and one UL frequency band corresponding thereto. In another particular embodiment, in TDD mode, the wireless communication system may divide a radio frame into UL time units and DL time units in the time domain and perform data transmission or reception through the UL/DL time units. Referring to fig. 9 (b), three 20MHz Component Carriers (CCs) can be aggregated into each of UL and DL so that a bandwidth of 60MHz can be supported. Each CC may or may not be adjacent to each other in the frequency domain. Fig. 9 (b) shows a case where the bandwidth of the UL CC and the bandwidth of the DL CC are the same and symmetrical, but the bandwidth of each CC can be independently determined. Furthermore, asymmetric carrier aggregation with different numbers of UL CCs and DL CCs is possible. DL/UL CCs allocated/configured to a specific UE through RRC may be referred to as serving DL/UL CCs of the specific UE.

The base station may perform communication with the UE by activating some or all of the serving CCs of the UE or disabling some CCs. The base station can change CCs to be activated/deactivated and change the number of CCs to be activated/deactivated. If the base station allocates CCs available to the UE as cell-specific or UE-specific, at least one of the allocated CCs will not be deactivated unless the CC allocation for the UE is completely reconfigured or the UE is switched. One CC that is not deactivated by the UE is referred to as a primary CC (PCC) or primary cell (PCell), and a CC that the base station can freely activate/deactivate is referred to as a secondary CC (SCC) or secondary cell (SCell).

Meanwhile, 3GPP NR manages radio resources using the concept of a cell. A cell is defined as a combination of DL resources and UL resources, i.e., a combination of DL CCs and UL CCs. A cell may be configured with DL resources alone or may be configured with a combination of DL and UL resources. When carrier aggregation is supported, a link between a carrier frequency of a DL resource (or DL CC) and a carrier frequency of a UL resource (or UL CC) may be indicated by system information. The carrier frequency refers to the center frequency of each cell or CC. The cell corresponding to the PCC is referred to as PCell, and the cell corresponding to the SCC is referred to as SCell. The carrier corresponding to the PCell in DL is DL PCC and the carrier corresponding to the PCell in UL is UL PCC. Similarly, the carrier in DL corresponding to SCell is DL SCC, and the carrier in UL corresponding to SCell is UL SCC. Depending on the UE capabilities, the serving cell may be configured with one PCell and zero or more scells. In the case of a UE in the rrc_connected state but not configured for carrier aggregation or not supporting carrier aggregation, only one serving cell is configured with only PCell.

As described above, the term "cell" used in carrier aggregation is distinguished from the term "cell" which refers to a certain geographical area where communication services are provided through one base station or one antenna group. That is, one component carrier may also be referred to as a scheduling cell, a scheduled cell, a primary cell (PCell), a secondary cell (SCell), or a primary SCell (PScell). However, in order to distinguish between a cell representing a certain geographical area and a carrier aggregated cell, in the present disclosure, the carrier aggregated cell is referred to as a CC, and the cell of the geographical area is referred to as a cell.

Fig. 10 is a diagram showing an example in which a cross-carrier scheduling technique is applied. When the cross-carrier scheduling is set, a control channel transmitted through the first CC may schedule a data channel transmitted through the first CC or the second CC using a Carrier Indicator Field (CIF). CIF is included in DCI. In other words, a scheduling cell is set, and DL grant/UL grant transmitted in the PDCCH region of the scheduling cell schedules PDSCH/PUSCH of the cell to be scheduled. That is, there is a search region for a plurality of component carriers in the PDCCH region of the scheduling cell. The PCell may basically be a scheduling cell, and a specific SCell may be designated as a scheduling cell by an upper layer.

In the embodiment of fig. 10, it is assumed that three DL CCs are combined. Here, it is assumed that DL component carrier #0 is DL PCC (or PCell), and DL component carrier #1 and DL component carrier #2 are DL SCCs (or scells). Further, it is assumed that DL PCC is set as PDCCH monitoring CC. When cross-carrier scheduling is not configured by UE-specific (or UE group-specific or cell-specific) higher layer signaling, CIF is disabled and each DL CC can transmit only PDCCH for scheduling its PDSCH without CIF according to NR PDCCH rules (non-cross-carrier scheduling, self-carrier scheduling). Meanwhile, if cross-carrier scheduling is configured through UE-specific (or UE group-specific or cell-specific) higher layer signaling, CIF is enabled, and a specific CC (e.g., DL PCC) may use CIF to transmit not only PDCCH for scheduling PDSCH of DL CC a but also PDCCH for scheduling PDSCH of another CC (cross-carrier scheduling). On the other hand, the PDCCH is not transmitted in another DL CC. Accordingly, the UE monitors a PDCCH including no CIF to receive a PDSCH from the carrier scheduling according to whether the UE is configured with the cross-carrier scheduling, or monitors a PDCCH including CIF to receive a PDSCH of the cross-carrier scheduling.

On the other hand, fig. 9 and 10 illustrate subframe structures of the 3GPP LTE-a system, and the same or similar configuration may be applied to the 3GPP NR system. However, in the 3GPP NR system, the subframes of fig. 9 and 10 may be replaced with slots.

In embodiments of the present disclosure, a UE may be implemented with various types of wireless communication devices or computing devices that are guaranteed to be portable and mobile. A UE may be referred to as a User Equipment (UE), a Station (STA), a Mobile Subscriber (MS), etc. Further, in the embodiments of the present disclosure, the base station controls and manages cells (e.g., macro cells, femto cells, pico cells, etc.) corresponding to the service area, and performs functions of signal transmission, channel assignment, channel monitoring, self diagnosis, relay, etc. A base station may be referred to as a next generation node B (gNB) or an Access Point (AP).

As shown in the drawings, the UE 100 according to an embodiment of the present disclosure may include a processor 110, a communication module 120, a memory 130, a user interface 140, and a display unit 150.

First, the processor 110 may execute various instructions or processes and process data within the UE 100. Further, the processor 110 may control the overall operation of each unit including the UE 100, and may control transmission/reception of data between the units. Here, the processor 110 may be configured to perform operations according to embodiments described in the present disclosure. For example, the processor 110 may receive slot configuration information, determine a slot configuration based on the slot configuration information, and perform communication according to the determined slot configuration.

Next, the communication module 120 may be an integrated module that performs wireless communication using a wireless communication network and performs wireless LAN access using a wireless LAN. To this end, the communication module 120 may include a plurality of Network Interface Cards (NICs) such as cellular communication interface cards 121 and 122 and unlicensed band communication interface card 123 in an internal or external form. In the drawings, the communication module 120 is shown as a unitary integrated module, but unlike the drawings, each network interface card can be independently arranged according to a circuit configuration or usage.

The cellular communication interface card 121 may transmit or receive a radio signal with at least one of the base station 200, an external device, and a server by using a mobile communication network and provide a cellular communication service in a first frequency band based on an instruction from the processor 110. According to an embodiment, cellular communication interface card 121 may include at least one NIC module that uses a frequency band less than 6 GHz. At least one NIC module of the cellular communication interface card 121 may independently perform cellular communication with at least one of the base station 200, the external device, and the server in accordance with a cellular communication standard or protocol in a frequency band below 6GHz supported by the corresponding NIC module.

The cellular communication interface card 122 may transmit or receive a radio signal with at least one of the base station 200, an external device, and a server by using a mobile communication network and provide a cellular communication service in a second frequency band based on an instruction from the processor 110. According to an embodiment, cellular communication interface card 122 may include at least one NIC module that uses a frequency band greater than 6 GHz. At least one NIC module of the cellular communication interface card 122 may independently perform cellular communication with at least one of the base station 200, the external device, and the server in accordance with a cellular communication standard or protocol in a frequency band of 6GHz or more supported by the corresponding NIC module.

The unlicensed band communication interface card 123 transmits or receives radio signals with at least one of the base station 200, the external device, and the server by using a third frequency band that is an unlicensed band, and provides unlicensed band communication services based on instructions from the processor 110. The unlicensed band communication interface card 123 may include at least one NIC module that uses unlicensed bands. For example, the unlicensed frequency band may be a frequency band of 2.4GHz, 5GHz, 6GHz, 7GHz, or above 52.6 GHz. The at least one NIC module of the unlicensed band communication interface card 123 may perform wireless communication with at least one of the base station 200, the external device, and the server independently or in dependence according to unlicensed band communication standards or protocols of the frequency bands supported by the corresponding NIC module.

The memory 130 stores a control program used in the UE 100 and various data used therefor. Such a control program may include a prescribed program required to perform wireless communication with at least one of the base station 200, an external device, and a server.

Next, the user interface 140 includes various input/output means provided in the UE 100. In other words, the user interface 140 may receive user input using various input means, and the processor 110 may control the UE 100 based on the received user input. Further, the user interface 140 may use various output means to perform output based on instructions from the processor 110.

Next, the display unit 150 outputs various images on the display screen. The display unit 150 may output various display objects, such as content or a user interface executed by the processor 110, based on control instructions from the processor 110.

Further, the base station 200 according to the embodiments of the present disclosure may include a processor 210, a communication module 220, and a memory 230.

First, the processor 210 may execute various instructions or programs and process internal data of the base station 200. Further, the processor 210 may control the overall operation of the units in the base station 200 and control the transmission and reception of data between the units. Here, the processor 210 may be configured to perform operations according to embodiments described in the present disclosure. For example, the processor 210 may signal a slot configuration and perform communication according to the signaled slot configuration.

Next, the communication module 220 may be an integrated module that performs wireless communication using a wireless communication network and performs wireless LAN access using a wireless LAN. To this end, the communication module 220 may include a plurality of network interface cards, such as cellular communication interface cards 221 and 222 and unlicensed band communication interface card 223, in an internal or external form. In the drawings, the communication module 220 is shown as a unitary integrated module, but unlike the drawings, each network interface card can be independently arranged according to a circuit configuration or usage.

The cellular communication interface card 221 may transmit or receive a radio signal with at least one of the base station 100, an external device, and a server by using a mobile communication network and provide a cellular communication service in a first frequency band based on an instruction from the processor 210. According to an embodiment, the cellular communication interface card 221 may include at least one NIC module using a frequency band less than 6 GHz. At least one NIC module of the cellular communication interface card 221 may independently perform cellular communication with at least one of the base station 100, the external device, and the server in accordance with a cellular communication standard or protocol in a frequency band of less than 6GHz supported by the corresponding NIC module.

The cellular communication interface card 222 may transmit or receive radio signals with at least one of the base station 100, an external device, and a server by using a mobile communication network and provide cellular communication services in a second frequency band based on instructions from the processor 210. According to an embodiment, the cellular communication interface card 222 may include at least one NIC module using a frequency band of 6GHz or higher. At least one NIC module of the cellular communication interface card 222 may independently perform cellular communication with at least one of the base station 100, the external device, and the server in accordance with a cellular communication standard or protocol in a frequency band of 6GHz or higher supported by the corresponding NIC module.

The unlicensed band communication interface card 223 transmits or receives radio signals with at least one of the base station 100, the external device, and the server by using a third frequency band that is an unlicensed band, and provides unlicensed band communication services based on instructions from the processor 210. The unlicensed band communication interface card 223 may include at least one NIC module that uses unlicensed bands. For example, the unlicensed frequency band may be a frequency band of 2.4GHz, 5GHz, 6GHz, 7GHz, or above 52.6 GHz. The at least one NIC module of the unlicensed band communication interface card 223 may perform wireless communication with at least one of the base station 100, the external device, and the server independently or in dependence according to unlicensed band communication standards or protocols of the frequency bands supported by the corresponding NIC module.

Fig. 11 is a block diagram illustrating a UE 100 and a base station 200 according to an embodiment of the present disclosure, and the blocks shown separately are logically divided elements of an apparatus. Thus, the aforementioned elements of the device may be mounted in a single chip or multiple chips depending on the design of the device. Further, a portion of the configuration of the UE 100, e.g., the user interface 140, the display unit 150, etc., may be selectively provided in the UE 100. Furthermore, a user interface 140, a display unit 150, etc. may be additionally provided in the base station 200 as necessary.

The terminal may transmit uplink data to the base station through the PUSCH. The base station may schedule (PUSCH schedule) for the terminal to transmit uplink data through the PUSCH. i) In a Dynamic Grant (DG) method, a base station may perform PUSCH scheduling via DCI included in a PDCCH. Alternatively, ii) in the Configuration Grant (CG) method, the terminal may transmit uplink data to the base station through PUSCH according to resources and transmission methods preconfigured for the terminal by the base station.

In this case, DCI included in the PDCCH may include PUSCH scheduling information. For example, the DCI may include time domain information (time domain resource assignment (TDRA)) and frequency domain information (frequency domain resource assignment (FDRA)). The terminal may receive DCI transmitted in the control resource set and the search space, and may perform an operation indicated via the DCI (e.g., uplink data transmission through PUSCH). In this case, DCI formats for PUSCH scheduling may be DCI formats 0_0, 0_1, and 0_2. The DCI of DCI formats 0_0, 0_1, and 0_2 may include a TDRA field containing time domain information of PUSCH. In this case, the time domain information may include K2, which is an offset value between a slot in which the PDCCH is transmitted from the base station and a slot in which the PUSCH is transmitted by the terminal. In addition, the DCI may include a Start and Length Indication Value (SLIV), which is a joint encoded value of a start symbol index (S) of a PUSCH and a symbol length (L, number) of the PUSCH in a slot indicated by K2. If the terminal receives DCI in slot n, the slot in which PUSCH is scheduled may be floor (n x 2) ^μPUSCH /n*2 ^μPDCCH ) +k2 slots. μpusch and μpdcch, respectively, may refer to the information thereinA subcarrier spacing of a cell in which PUSCH is scheduled and a subcarrier spacing (SCS) of a cell in which a terminal receives PDCCH. floor (x) is a function that returns the largest integer among integers equal to or smaller than x. In this specification, a slot n may refer to a slot indexed with an index n.

Referring to (a) of fig. 12, the subcarrier spacing of a cell in which the terminal receives the PDCCH and the subcarrier spacing of a cell in which the PUSCH is scheduled may be the same. In this case, if the terminal receives the PDCCH in the slot n and is instructed that K2 is 4, the slot in which the PUSCH is scheduled may be the slot n+k2, i.e., the slot n+4.

As for the PUSCH scheduling type, there may be two mapping types of PUSCH mapping type a and PUSCH mapping type B. Depending on the PUSCH mapping type, the starting symbol index for PUSCH and the range of possible values for SLIV may vary. In PUSCH mapping type a, resource allocation including only DMRS symbols is possible, and the DMRS symbols may be located in the third or fourth symbol of the slot according to a value indicated by a higher layer. That is, in case of PUSCH mapping type a, the index (S) of the start symbol of PUSCH may be 0, and the length (L) of PUSCH may have one of values from 4 to 14 (12 for extended CP) according to DMRS symbol positions. In PUSCH mapping type B, the first symbol of PUSCH may be a DMRS symbol. Thus, S may have a value from 0 to 13 (11 for extended CP), and L may have one of a value from 1 to 14 (12 for extended CP). In addition, since one PUSCH cannot cross a slot boundary, the sum of S and L should be less than or equal to 14 (12 for extended CP).

Referring to (B) of fig. 12, the base station may schedule a PUSCH mapping type a in which the third symbol is a DMRS symbol, the index (S) of the start symbol is 0, and the length (L) is 7, may schedule a PUSCH mapping type a in which the fourth symbol is a DMRS symbol, the index (S) of the start symbol is 0, and the length (L) is 7, and may schedule a PUSCH mapping type B in which the first symbol is a DMRS symbol, the index (S) of the start symbol is 5, and the length (L) is 5. In this case, frequency domain information of PUSCH indicated in the FDRA field of DCI format 0_0, 0_1 or 0_2 may be divided into two types according to frequency resource allocation types.

Hereinafter, a frequency resource allocation type will be described with reference to fig. 13.

i) The frequency resource allocation type 0 as the first type may be a type that configures RBGs by bundling a certain number of PRBs according to the number of RBs included in BWP configured (set) for the terminal and indicates whether to use the RBGs via a bitmap in units of the RBGs. That is, the terminal can determine whether to use the corresponding RBG via the bitmap transmitted from the base station. The number of PRBs included in one RBG may be set (configured) from a higher layer, and as the number of RBs included in BWP set (configured) for a terminal is greater, the number of PRBs may be set (configured) more. Referring to (a) of fig. 13, a BWP size set (configured) for a terminal may be 72 PRBs, and one RBG may include 4 PRBs. In this case, the terminal may determine four PRBs as one RBG in ascending order from PRB 0, and may index each RBG from 0. That is, RBGs including PRB 0 through PRB 3 may be indexed as RBG 0, and RBGs including PRB 4 through PRB 7 may be indexed as RBG 1. Until the RBGs 17 can be indexed in the same manner, wherein the base station can transmit 1 bit (0 or 1) per RBG to the terminal, i.e., 18 bits in total, and the terminal can determine whether to use PRBs constituting the corresponding RBG based on the received 18 bits. In this case, if the bit value is 0, the terminal may determine not to schedule PUSCH for any PRB among PRBs constituting the corresponding RBG. If the bit value is 1, the terminal may determine to schedule PUSCH for all PRBs in the corresponding RBG. In this case, the bit value may be applied in reverse. ii) the frequency resource allocation type 1 as the second type may be a type indicating information on consecutive PRBs allocated according to the size of the active BWP or the initial BWP of the terminal. The information on the consecutive PRBs may be a Resource Indication Value (RIV) in which a start index (S) and a length (L) of the consecutive PRBs are jointly encoded. Referring to (b) of fig. 13, when the BWP size is 50 PRBs, and among the 50 PRBs, PRB 2 through PRB 11 end When the end schedules PUSCH, the starting index of consecutive PRBs may be 2 and the length may be 10. That is, the terminal may determine a starting index and a length of consecutive PRBs in which to schedule PUSCH based on the RIV value received from the base station. Specifically, it can be determined by N ^size _BWP * (L-1) +S to calculate RIV. N (N) ^size _BWP May be the size of a BWP configured for the terminal. For example, if the RIV value received by the terminal is 452, calculation of 452 is based on 452=50×10-1) +2, so the terminal can determine that the starting index of the consecutive PRBs in which PUSCH is scheduled is 2 and the length is 10.

Via DCI of DCI format 0_1 or 0_2 for scheduling PUSCH, a terminal may be configured from a higher layer to use only one of the aforementioned two frequency resource allocation types or to dynamically use both types. If the terminal is configured to dynamically use both types, the terminal may determine a frequency resource allocation type to be used through 1 bit of the Most Significant Bit (MSB) of the FDRA field of DCI.

There may be an uplink shared channel transmission method based on configuration grants for URLLC transmissions and the like. The uplink shared channel transmission method based on the configuration grant may be described as unlicensed transmission. The uplink shared channel transmission method based on the configuration grant may be a method in which if the base station configures available resources for uplink transmission for the terminal through higher layers (i.e., RRC signaling), the terminal may transmit the uplink shared channel by using the configured resources. Uplink shared channel transmission methods based on configuration grants can be classified into two types according to whether DCI indicates activation and release. i) The type 1 configuration grant based uplink shared channel transmission method may be a method of pre-configuring transmission methods and resources via a higher layer. ii) the type 2 configuration grant based uplink shared channel transmission method may be a method of configuring a configuration grant based transmission via a higher layer and indicating DCI, a method for actual transmission, and resources.

The configuration grant based uplink transmission method may support URLLC transmission. Accordingly, uplink transmission can be repeatedly performed over a plurality of slots to ensure high reliability. In this case, the Redundancy Version (RV) sequence may be one of {0, 0}, {0,2,3,1} and {0,3,0,3}, and RV corresponding to the (mod (n-1, 4) +1) th value may be used in the nth retransmission. That is, RV corresponding to a value obtained by adding 1 to the remainder of dividing n-1 by 4 may be used. Further, a terminal configured to repeat transmission of an uplink channel may start repeating transmission only in a slot having an RV value of 0. However, if the RV sequence is {0, 0} and the uplink channel is configured to repeat transmission in 8 or more slots, the terminal may not start repeating transmission in the last slot in which the repeated transmission is configured. The terminal may terminate the repeated transmission when receiving UL grant with the same HARQ process ID or when reaching the number of repeated transmissions via higher layer configuration or exceeding a period. UL grant may refer to DCI for PUSCH scheduling.

As described above, in order to improve PUSCH transmission/reception reliability between a base station and a terminal in a wireless communication system, the base station may configure the terminal to repeatedly transmit PUSCH.

The repeated PUSCH transmission performed by the terminal may be of two types. i) First, the repeated PUSCH transmission type a will be described. When the terminal receives DCI of DCI format 0_1 or 0_2 included in PDCCH for PUSCH scheduling from the base station, the terminal may repeatedly transmit PUSCH on K consecutive slots. The K value may be configured from a higher layer or may be a value included in a TDRA field of DCI to configure a terminal. For example, referring to fig. 14 (a), a terminal may receive a PDCCH for PUSCH scheduling in a slot n, and may configure a K2 value according to DCI included in the received PDCCH. In this case, if the K2 value is 2 and the K value is 4, the terminal may start repeating PUSCH transmission in the slot n+k2 and may repeatedly transmit PUSCH until the slot n+k2+k-1. That is, the terminal starts to repeat PUSCH transmission in slot n+2 and repeatedly transmits PUSCH until slot n+5. In this case, the time domain resources and frequency domain resources of the PUSCH transmitted in each slot may be the same as those indicated in the DCI. That is, PUSCH may be transmitted in the same symbol and PRB within a slot. ii) next, the repeated PUSCH transmission type B will be described. The repeated PUSCH transmission type B may be a type for a terminal to perform low latency repeated PUSCH transmission in order to meet URLLC requirements, etc. The terminal may be configured with a symbol (S) for repeating PUSCH transmission start and a length (L) for repeating PUSCH transmission via a TDRA field of DCI transmitted by the base station. In this case, the start symbol (S) and the length (L) may be for a nominal PUSCH obtained temporarily instead of an actual PUSCH actually transmitted by the terminal. There may be no separate symbols between nominal PUSCHs configured to be repeatedly transmitted. That is, the nominal PUSCH may be continuous in the time domain. The terminal may determine the actual PUSCH from the nominal PUSCH. One nominal PUSCH may be determined as one or more actual PUSCHs. The base station may configure the terminal with symbols that are not available for repetition of PUSCH transmission type B. Symbols that are not available for repeated PUSCH transmission type B may be described as invalid symbols. The terminal may exclude invalid symbols from among the resources configured to transmit the nominal PUSCH. As described above, the nominal PUSCH is configured to be repeatedly transmitted on consecutive symbols, but if an invalid symbol is excluded, the resources for the nominal PUSCH transmission become discontinuous. The actual PUSCH may be configured to be transmitted on consecutive symbols configured for one nominal PUSCH transmission, except for invalid symbols. In this case, if consecutive symbols cross slot boundaries, the actual PUSCH actually transmitted may be divided based on the slot boundaries. The invalid symbols may include downlink symbols configured by the base station for the terminal. Referring to fig. 14 (B), a terminal may be scheduled with PUSCH transmission of length 5 symbols starting from the twelfth symbol of the first slot (slot n), and may be configured with 4 type B repeated transmissions. In this case, the resources scheduled for the first nominal PUSCH (nominal # 1) may include a symbol (n, 11), a symbol (n, 12), a symbol (n, 13), a symbol (n+1, 0), and a symbol (n+1, 1). The resources scheduled for the second nominal PUSCH (nominal # 2) may include symbol (n+1, 2), symbol (n+1, 3), symbol (n+1, 4), symbol (n+1, 5), and symbol (n+1, 6). The resources scheduled for the third nominal PUSCH (nominal # 3) may include symbol (n+1, 7), symbol (n+1, 8), symbol (n+1, 9), symbol (n+1, 10), and symbol (n+1, 11). The resources scheduled for the fourth nominal PUSCH (nominal # 4) may include symbol (n+1, 12), symbol (n+1, 13), symbol (n+2, 0), symbol (n+2, 1), and symbol (n+2, 2). In this case, the symbol (n, k) represents the symbol k of the slot n. That is, k may be a value from 0 to 13 for a normal CP and from 0 to 11 for an extended CP. The invalid symbols may be configured as symbols 6 and 7 of slot n + 1. In this case, in order to determine the actual PUSCH, the last symbol of the second nominal PUSCH (nominal # 2) may be excluded, and the first symbol of the third nominal PUSCH (nominal # 3) may be excluded. The first nominal PUSCH (nominal # 1) may be divided into two actual PUSCHs (actual #1 and actual # 2) actually transmitted by a slot boundary. Each of the second nominal PUSCH (nominal # 2) and the third nominal PUSCH (nominal # 3) may be distinguished into one actual PUSCH (actual #3 and actual # 4) by combining consecutive symbols other than the null symbol. Finally, the fourth nominal PUSCH (nominal # 4) is divided into two actually transmitted (actual) PUSCHs (actual #5 and actual # 6) by slot boundaries. The terminal finally transmits the actually transmitted (actual) PUSCH. One actual PUSCH should include at least one DMRS symbol. Therefore, when the repeated PUSCH transmission type B is configured, if the total length of the actual PUSCH is one symbol, the actual PUSCH may be omitted without being transmitted. This is because the actual PUSCH with one symbol may not include information other than the DMRS.

In order to obtain diversity gain in the frequency domain, frequency hopping may be configured for uplink channel transmission.

For the repeated PUSCH transmission type a, one of intra-slot hopping, in which hopping is performed in slots, and inter-slot hopping, in which hopping is performed in each slot, may be configured for the terminal. If the terminal is configured with intra-slot frequency hopping, the terminal may divide the PUSCH into two in the time domain and transmit one half of the PUSCH in the scheduled PRB in the slot for transmitting the PUSCH, and may transmit the other half in the PRB obtained by adding the offset value to the scheduled PRB. In this case, two or four offset values may be configured according to the active BWP size via a higher layer, and one of the values may be configured (indicated to the configuration) for the terminal via DCI. If inter-slot frequency hopping is configured for a terminal, the terminal may transmit a PUSCH in a scheduled PRB in a slot having an even slot index, and may transmit a PUSCH in a PRB obtained by adding an offset value to the scheduled PRB in an odd slot.

For the repeated PUSCH transmission type B, the terminal may be configured with one of inter-repetition hopping, which performs hopping at a nominal PUSCH boundary, and inter-slot hopping, which performs hopping in each slot. If the terminal is configured with inter-repetition frequency hopping, the terminal may transmit an actual PUSCH corresponding to an odd-numbered nominal PUSCH on a scheduled PRB, and the terminal may transmit an actual PUSCH corresponding to an even-numbered nominal PUSCH on a PRB obtained by adding an offset value to the scheduled PRB. In this case, two or four offset values may be configured according to the active BWP size via a higher layer, and one of the values may be configured (indicated to the configuration) for the terminal via DCI. If inter-slot frequency hopping is configured for a terminal, the terminal may transmit a PUSCH in a scheduled PRB in a slot having an even slot index, and may transmit a PUSCH in a PRB obtained by adding an offset value to the scheduled PRB in an odd slot.

When a terminal performs repeated PUSCH transmission, if a symbol scheduled for PUSCH transmission in a specific slot overlaps with a DL symbol semi-statically configured or a symbol configured to receive SS/PBCH blocks, the terminal may not transmit the overlapping PUSCH on a slot including the overlapping symbol. In addition, the overlapping PUSCH may be delayed and may not be transmitted even on subsequent slots.

If the terminal receives DCI of DCI format 1_0, 1_1 or 1_2 for PUCCH scheduling, the terminal needs to transmit PUCCH to the base station. In this case, the PUCCH may include Uplink Control Information (UCI), and the UCI may include at least one of HARQ-ACK, scheduling Request (SR), and Channel State Information (CSI). The HARQ-ACK may be a HARQ-ACK indicating whether the terminal successfully received both channels. When terminals are scheduled with PDSCH via DCI of DCI format 1_0, 1_1 or 1_2, the first type may be HARQ-ACK for PDSCH. When the DCI of the DCI format 1_0, 1_1, or 1_2 is DCI indicating release of a semi-persistent scheduling (SPS) PDSCH, the second type may be HARQ-ACK for a PDCCH including the DCI. For PUCCH transmission including HARQ-ACK, the PDSCH-to-harq_feedback timing indicator field of DCI may indicate K1, which is information (value) of a slot for transmitting a scheduled PUCCH therein. Here, K1 may be a non-negative integer value. The DCI of DCI format 1_0 may indicate one of {1, 2, 3, 4, 5, 6, 7, 8} as a K1 value. The K1 value, which may be indicated in the DCI of DCI format 1_1 or 1_2, may be set (configured) from a higher layer.

A method of determining a slot in which a PUCCH including a first type HARQ-ACK is transmitted will be described. There may be an uplink slot overlapping with the last symbol in which the PDSCH corresponding to the HARQ-ACK is transmitted. In this case, if the index of the overlapping uplink slot is m, the terminal may transmit a PUCCH including HARQ-ACK on slot m+k1. The index of the uplink slot may be a value determined based on a subcarrier spacing of BWP in which the PUCCH is transmitted. If the terminal is configured with a slot aggregation of PDSCH, the last symbol in which PDSCH is transmitted may refer to the last scheduled symbol within the last slot in the slots in which PDSCH is transmitted.

< a method of determining Transport Block Size (TBS) for PUSCH Transmission >

PUSCH transmission by a UE may be scheduled by a base station via one of the following methods.

PUSCH scheduled by Random Access Response (RAR) UL grant of UE

PUSCH scheduled by backoff RAR UL grant

PUSCH scheduled with DCI format 0_0, DCI format 0_0 having CRC scrambled with C-RNTI, MCS-C-RNTI, TC-RNTI or CS-RNTI

PUSCH scheduled with DCI format 0_1/DCI format 0_2, DCI format 0_1/DCI format 0_2 having CRC scrambled with C-RNTI, MCS-C-RNTI or CS-RNTI

PUSCH by configuration grant

–MsgA PUSCH

For such PUSCH, one value in the Modulation and Coding Scheme (MCS) table index may be configured by the base station as the I of the UE _MCS 。

In the following case, the UE may obtain the TBS by the following method.

-configured or indicated MCS table index value satisfying 0<＝I _MCS <In the case of=27, the transform precoding corresponds to 'disable', and MCS table 5.1.3.1-2 of 3GPP TS38.214 v16.3.0 is used (2020-09).

-satisfy 0<＝I _MCS <In the case of=28, transform precoding corresponds to 'disable', and MCS tables other than table 5.1.3.1-2 of 3GPP TS38.214 v16.3.0 (2020-09) are used.

-satisfy 0<＝I _MCS <The case of=27, and the transform precoding corresponds to 'enable'.

According to the following procedure, the UE may determine the number of Resource Elements (REs) in a single slot for PUSCH in case the repetition transmission type for the repetition PUSCH transmission is configured as type a or the repetition PUSCH transmission is not configured, and may determine the number of REs in a single nominal PUSCH in case the repetition PUSCH transmission type B is configured.

First, the UE may calculate the number of REs per PRB (N 'of the allocated PUSCH based on the following equation' _RE )。

N' _RE ＝N ^RB _SC *N ^sh _symb -N ^PRB _DMRS -N ^PRB _oh ,

Here, N ^RB _SC (=12) denotes the number of subcarriers per Physical Resource Block (PRB) in the frequency domain, N ^sh _symb Represents the number (L), N of PUSCH symbols allocated in the time domain ^PRB _DMRS Represents the number of DMRS REs per PRB, and N ^PRB _oh The number of overhead REs representing higher layer configurations is the same as the value (xOverhead) of the base station configuration. Here, the value (xOverhead) of the base station configuration may be embodied as one of numbers, i.e., 0, 6, 12, and 1, for each of the uplink or downlink8。

For example, as shown in fig. 15, in the case where configuration performed for the UE such as the number of symbols (L) is 14, the PUSCH mapping type is type B, single symbol DMRS is used, the number of additional DMRS symbols is 3, the DMRS configuration type is type 1 (default shift=0), and repetition transmission and frequency hopping are not configured, the UE can calculate the number of DMRS RE and PUSCH data per PRB as N 'through the RE mapping pattern of fig. 15' _RE ＝12*14-24-N ^PRB _oh . Here, it is assumed that the number of overhead REs configured by higher layers is N ^PRB _oh In the case of=12, the number of PUSCH REs per PRB may be calculated as N' _RE ＝12*14-24-12＝132。

In case the base station configures the UE with a value (xOverhead) indicating the number of overhead REs, the unit to which the value is applied may be at least one of the following.

1) Overhead per RE or symbol: is considered as overhead per predetermined RE or symbol. Here, the predetermined RE or symbol may be a resource in a unit smaller than a single slot or a single nominal PUSCH. That is, the UE may determine to apply a value (xOverhead) indicating the number of overhead REs per predetermined RE or symbol configuration in the time domain resource to which a single TB is allocated.

2) Overhead per symbol set: is considered the overhead of each individual symbol set. Here, in case of the repeated PUSCH transmission type a, a single symbol set may be a single slot. In the case of repeated PUSCH transmission type B, the single symbol set may be a single nominal PUSCH. That is, the UE determines to apply a value (xOverhead) indicating the number of overhead REs configured for each time domain resource to which a single TB is allocated.

3) Overhead per slot: is considered as overhead per single slot. The UE determines a value (xOverhead) indicating a number of overhead REs configured per single slot in the time domain resource to which the single TB is allocated.

4) Overhead per PUSCH of transmission TB: is considered as per PUSCH overhead for transmitting a single TB. The UE may determine a value (xOverhead) to which a number of overhead REs indicating an entire time domain resource configuration of PUSCH allocated with a single TB is applied.

5) Overhead of maximum PUSCH for transmission TB: is considered as the overhead of the maximum PUSCH for transmitting a single TB. Here, the maximum PUSCH for transmitting a single TB may be a schedule of the maximum PUSCH used when the UE transmits a single TB in the time domain. That is, the UE may determine that a value (xoverheads) indicating the number of overhead REs is applied as an overhead of the maximum PUSCH scheduling that can be configured.

Subsequently, the UE may calculate the number of REs for transmitting the entire PUSCH in the frequency domain by using the following equation.

N _RE ＝min(156,N' _RE )*n _PRB ，

Here, n _PRB Representing the number of PRBs allocated from the base station to the UE in the frequency domain and used for transmitting PUSCH. For example, as shown in fig. 16, the number of PUSCH PRBs allocated to a UE in the frequency domain is n _PRB In case of=8, the UE can calculate the total PUSCH RE in the frequency domain as N _RE ＝min(156,132)*8＝1056。

Subsequently, the UE may calculate the number N of unquantized information bits based on the following equation _info 。

N _info ＝N _RE *R*Q _m * v. Where R represents the code rate, Q _m Represents the modulation order, and v represents the number of layers. The UE may rely on N depending on the calculation _info Different methods to determine TBS.

At N _info <In the case of=3824, the UE can calculate the number of quantized information bits as N' _info ＝max(24,2 ⁿ *floor(N _info /2 ⁿ )). Here, n=max (3, floor (log ₂ (N _info )) -6). Subsequently, based on Table 4 provided below, the UE may determine that it is closest to but not less than N' _info As TBS of PUSCH.

TABLE 4

Index	TBS	Index	TBS	Index	TBS	Index	TBS
								1	24	31	336	61	1288	91	3624
2	32	32	352	62	1320	92	3752
								3	40	33	368	63	1352	93	3824
4	48	34	384	64	1416
								5	56	35	408	65	1480
6	64	36	432	66	1544
								7	72	37	456	67	1608
8	80	38	480	68	1672
								9	88	39	504	69	1736
10	96	40	528	70	1800
								11	104	41	552	71	1864
12	112	42	576	72	1928
								13	120	43	608	73	2024
14	128	44	640	74	2088
								15	136	45	672	75	2152
16	144	46	704	76	2216
								17	152	47	736	77	2280
18	160	48	768	78	2408
								19	168	49	808	79	2472
20	176	50	848	80	2536
								21	184	51	888	81	2600
22	192	52	928	82	2664
								23	208	53	984	83	2728
24	224	54	1032	84	2792
								25	240	55	1064	85	2856
26	256	56	1128	86	2976
								27	272	57	1160	87	3104
28	288	58	1192	88	3240
								29	304	59	1224	89	3368
30	320	60	1256	90	3496

Table 4 shows the results in N _info Example of TBS in case of < = 3824.

At N _info In the case of > 3824, the UE may calculate the number of quantized information bits as N' _info ＝max(3840，2 ⁿ *round((N _info -24)/2 ⁿ )). Here, n=floor (log ₂ (N _info -24))-5。

In case that the configured or indicated PUSCH code rate R is less than or equal to 1/4, the UE may determine PUSCH TBS based on the following equation.

TBS＝8*C*ceil((N' _info +24)/8*C)-24，

Here, c=ceil ((N' _info +24)/3816). ceil (x) represents the smallest integer of numbers greater than or equal to x. In case that the configured or indicated code rate R of PUSCH is greater than 1/4, the UE may determine PUSCH TBS based on the following equation.

At N' _info >8424, tbs=8×c ceil ((N ')' _info +24)/8*C) -24. Here, c=ceil ((N' _info +24)/8424). At N' _info <In case of=8424, tbs=8×ceil ((N ')' _info +24)/8)-24。

MCS table index configured or indicated for UE at base station of 28<＝I _MCS <In the case of=31, the transform precoding corresponds to 'disable', and MCS table 5.1.3.1-2 (2020-09) using 3GPP TS38.214 v16.3.0, or 28 is used<＝I _MCS <In the case of=31 and the transform precoding corresponds to 'enable', the method of determining TBS is as follows.

The UE may consider to be at 0<＝I _MCS <In the case of=27, the TBs is determined in DCI received via the latest PDCCH for the same TB.

At 0<＝I _MCS <In the case where PDCCH of the same TB is not received under the condition of=27, and the initial PUSCH transmission of the same TB is based on the configuration grant, the TBs may be determined based on the following condition. In case of configuring the grant type 1PUSCH, the UE may determine a value configured by a higher layer as the TBS. In the case of configuration grant type 2PUSCH, the UE may determine the TBS based on information in the PDCCH that schedules the last received configuration grant type 2PUSCH.

In the case where IMCS, which is a configured or indicated MCS table index value, information indicating whether transform precoding corresponds to "enable", and an applied MCS table are not included in the above conditions, a TBS may be determined according to the following method.

The UE may consider to be at 0<＝I _MCS <In the case of=28, the TBs is determined in DCI received via the latest PDCCH for the same TB.

At 0<＝I _MCS <In the case where PDCCH for the same TB is not received under the condition of=28, and the initial PUSCH transmission for the same TB is based on the configuration grant, TBs may be determined based on each condition as follows.

In case of configuring the grant type 1PUSCH, the UE may determine a value configured by a higher layer as TBS.

In case of configuration grant type 2PUSCH, the UE may determine TBS based on information in PDCCH that schedules the last received configuration grant type 2PUSCH.

As described above, in case of repeating PUSCH transmission type a, the UE may determine the TBS based on the number of symbols indicated or configured for transmission in each slot, the number of REs for DMRS, and the number of configuration overhead. In each slot, the UE may repeatedly transmit a single TB determined by the TBS. Here, TBs transmitted in each slot may have the same Redundancy Version (RV) value or different RV values.

Further, in case of the repetition PUSCH transmission type B, the UE may determine the TBS based on the number of symbols occupied by each nominal repetition, based on the number of REs for DMRS for the number of symbols for the nominal repetition, or the amount of overhead configured. The UE may transmit a single TB determined based on the TBS in each symbol considered to be actually repeated. Here, the TBs transmitted in each symbol considered as actually repeated may have the same Redundancy Version (RV) value or different RV values. Here, the nominal repetition may be divided into a single actual repetition or a plurality of actual repetitions, which have been described with reference to fig. 14B.

The problem that the present invention is expected to solve is to substantially overcome the problems that occur in TBS determination methods and repeated TB transmission schemes. More specifically, in the case of the repeated PUSCH transmission type a or the repeated PUSCH transmission type B, the TBS may be determined based on a single slot or a single nominal repetition, and the TBS-based TB is repeatedly transmitted in a plurality of slots and/or symbols regarded as a plurality of actual repetitions. In this case, the UE may repeatedly transmit TBS of a small size and with a small TBS for PUSCH. However, in some cases, problems may occur with the solution. For example, due to insufficient uplink coverage area, the base station may allocate a small number of PRBs to the UE such that the UE transmits PUSCH at high power per RE. In this case, the TBS of the UE is very small, and thus it is difficult to obtain a sufficient coding gain. Thus, repeated transmissions of very small TBSs may be inefficient.

Fig. 17 is a method for determining a Transport Block Size (TBS) by a UE based on a single slot or a single nominal PUSCH.

Fig. 17 illustrates resource allocation for transmission of PUSCH. Referring to case 1 in fig. 17, a single slot (14 symbols) in the time domain and 4 PRBs in the frequency domain are allocated to the UE for PUSCH transmission. In case 2, two slots (28 symbols) in the time domain and 2 PRBs in the frequency domain are allocated to the UE for transmission of PUSCH. The number of REs in case 1 and the number of REs in case 2 (the number of REs for DM-RS and the number of REs for overhead are ignored) are the same, which corresponds to 12×14×4=12×28×2=12×56=672. However, in case 1, more PRBs are allocated in the frequency domain, so the maximum power per RE of case 2 may be higher than that of case 1, i.e., the coverage of case 2 may be higher than that of case 1.

However, as described above, TBSs are generated on a single time slot or a single nominal repetition. In the case of fig. 17, a single slot (14 symbols) is used for PUSCH transmission. In case 2, two slots (14×2 symbols) are used for PUSCH transmission. Thus, determining the number of REs of the TBS (ignoring the number of REs for DMRS and the number of REs for overhead) may be 12×14×4 in case 1 and 12×14×2 in case 2. Accordingly, in case 2, the TBS may be lower than that of case 1. Therefore, higher coverage cannot be obtained with the same TBS maintained.

Hereinafter, a method of calculating TBS to overcome this disadvantage is described. In this case, in the case of the repeated PUSCH transmission type a or the repeated PUSCH transmission type B, the UE may determine a TBS based on a plurality of slots or a plurality of nominal repetitions, may generate a TB based on the TBS, may map it to the plurality of slots or the plurality of nominal repetitions, and may perform transmission. Here, the generated TB may be additionally repeated and transmitted. Hereinafter, unless otherwise indicated, descriptions of duplicate transmissions are omitted in this disclosure.

Hereinafter, a repeated PUSCH transmission method is described.

Referring to fig. 18, the ue may repeatedly transmit PUSCH to the base station via a slot configured based on the repeated PUSCH transmission type a.

In particular, the UE may be configured or indicated with an index of a starting symbol and a length of a symbol to be used for transmitting PUSCH in each slot. Further, the UE may be configured or indicated with the number of slots to be used for transmission of PUSCH. For example, as shown in fig. 18, a start symbol for transmitting PUSCH in each slot is configured or indicated to be 0, a symbol length is 10, and the number of slots for transmitting PUSCH is 2.

For reference, the number of slots used for PUSCH transmission may be the same as or different from the number of repeated slots in repeated PUSCH transmission type a. In the case where the number of repeated slots of the repeated PUSCH transmission type a is the same as the number of slots used for PUSCH transmission, the UE may transmit PUSCH according to the number of slots used for PUSCH transmission. In case that the number of repeated slots of the repeated PUSCH transmission type a is greater than the number of slots for transmitting PUSCH, the UE may repeatedly transmit PUSCH according to the number of slots for PUSCH transmission. In this case, the number of slots for repeated transmission may be the same as the number of repeated slots of the repeated PUSCH transmission type a.

Based on the indication or configuration, the UE may determine a set of symbols to use for each slot. That is, based on the number of slots configured by the base station for PUSCH transmission and the starting symbol and symbol length in each slot, the UE may identify a set of symbols to be used for PUSCH transmission in each symbol.

For example, as shown in fig. 18, in case that the number of slots for PUSCH transmission is "2", the index of the start symbol is "0", and the symbol length is "10", the UE may determine that 10 symbols starting from the first symbol in the first slot are the first symbol set for PUSCH transmission, and 10 symbols starting from the first symbol in the second slot are the second symbol set.

The UE may perform PUSCH transmission based on the symbol set determined in the corresponding slot. That is, the UE may repeatedly transmit PUSCH using symbols allocated in the first slot and the second slot.

The detailed PUSCH transmission step may include at least the following steps.

In step 1, the UE determines a TBS based on a symbol set of a slot.

In step 2, the UE may generate a TB based on the determined TBS.

In step 3, the UE may arrange (map) modulation symbols generated by encoding TBs on a symbol set.

In step 4, the UE may transmit the arranged (mapped) modulation symbols according to the CP-OFDM or DFT-s-OFDM scheme.

Here, in case of each symbol set in each slot, the DM-RS symbol may be selected based on the length of the corresponding symbol set. DM-RS may be arranged (mapped) on REs of DM-RS symbols.

Fig. 19 is a diagram illustrating resource allocation for multiple nominal PUSCHs based on a repeated PUSCH transmission type B, according to an embodiment of the present disclosure.

Referring to fig. 19, the ue may repeatedly transmit PUSCH to the base station via a slot configured based on the repeated PUSCH transmission type B.

The UE may receive a configuration or indication associated with an index of a starting symbol of the first nominal repetition and a length of the symbol from the base station. Further, the UE may be configured or indicated a nominal number of repetitions to be used for PUSCH transmission. For example, as shown in fig. 19, the UE may receive a configuration associated with a start symbol for repeating PUSCH transmission, a symbol length, and the number of repeated transmissions (and/or the number of slots for repeated transmissions, etc.) from the base station via RRC configuration information and/or Downlink Control Information (DCI) of the PDCCH. Fig. 19 illustrates a symbol occupied by each nominal repetition in the case where the first nominal repetition is configured or indicated to begin with a sixth symbol, the symbol length is 4, and the nominal repetition number is 4.

For reference, the nominal number of repetitions for PUSCH transmission may be the same as or different from the nominal number of repetitions in repeated PUSCH transmission type B. In case the nominal number of repetitions of PUSCH transmission type B is the same as the nominal number of repetitions for PUSCH transmission, the UE may perform PUSCH transmission according to the nominal number of repetitions for PUSCH transmission. In the case where the nominal number of repetitions of PUSCH transmission type B is greater than the nominal number of repetitions to be used for PUSCH transmission, the UE may repeat PUSCH transmission according to the nominal number of repetitions to be used for PUSCH transmission. In this case, the nominal number of repetitions for repeated transmissions may be the same as the number of repetitions for repeated PUSCH transmission type B.

Based on the indication or configuration, the UE may determine a set of symbols to be used for each nominal repetition. For example, as shown in fig. 19, 4 symbols from the sixth symbol in the first slot (slot # 1) are the first symbol set, 4 symbols from the tenth symbol are the second symbol set, 4 symbols from the fourteenth symbol are the third symbol set, and 4 symbols from the fourth symbol in the second slot (slot # 2) are the fourth symbol set. Here, in the case where the symbol occupied by the nominal repetition is an invalid symbol, the symbol may be excluded from the valid symbol set.

The UE may perform PUSCH transmission based on the nominally repeated symbol set. The specific PUSCH transmission step may include at least the following steps.

In step 1, the ue determines a TBS based on a nominally repeated set of symbols.

In step 2, the ue may generate TBS based on the determined TBS.

In step 3, the ue may arrange (map) modulation symbols generated by encoding TBs on each symbol set.

Here, in case of each symbol set in each nominal repetition, the DM-RS symbol may be selected based on the length of the corresponding symbol set. Alternatively, each symbol set in each nominal repetition may be subdivided into symbol sets comprising consecutive symbols, and DM-RS symbols may be selected based on the length of the corresponding symbol set. Here, the process of dividing the symbol set again into symbol sets including consecutive symbols may be the same as the process of dividing the nominal repetition into actual repetitions, which has been described with reference to fig. 14B. DM-RS may be arranged (mapped) on REs of DM-RS symbols.

Subsequently, a description of detailed embodiments in which the UE determines the TBS in PUSCH transmission based on the repeated PUSCH transmission type a and in PUSCH transmission based on the repeated PUSCH transmission type B is provided. This may correspond to step 1 described above.

A first embodiment of the present disclosure provides the following.

In case of repeated PUSCH transmission type a, the UE may calculate the number of REs per PRB (N' _RE ＝N ^RB _SC *N ^sh _symb -N ^PRB _DMRS -N ^PRB _oh ) Time of dayThe TBS is determined based on a symbol set of a slot in which the PUSCH is transmitted. In the case of the repeated PUSCH transmission type B, when the number of REs per PRB (N 'is calculated' _RE ＝N ^RB _SC *N ^sh _symb -N ^PRB _DMRS -N ^PRB _oh ) When the UE may determine the TBS based on a nominally repeated symbol set of the transmit PUSCH. Hereinafter, the number of REs per PRB for determining TBS based on symbol set is referred to as N' _RE,total . UE calculates N' _RE,total The methods used in this case may include the following.

According to method 0, the ue may obtain the number of REs per PRB obtained based on a first symbol set of the plurality of symbol sets. More specifically, N' _RE,total ＝N ^RB _SC *N ^sh _symb -N ^PRB _DMRS -N ^PRB _oh . Here, N ^RB _SC ＝12，N ^sh _symb Representing the number of symbols comprised in the first set of symbols, N ^PRB _DMRS Represents the number of DMRS REs included in the first symbol set, and N ^PRB _oh Representing the overhead value.

Here, the first symbol set may be a front-most symbol set among the plurality of symbol sets. For reference, according to method 1, although any one of the plurality of symbol sets is considered to be the first symbol set, N' _RE,total Having the same value.

For reference, in the case where the first symbol set is the foremost symbol set of the plurality of symbol sets, N' _RE,total Can be identical to N 'already described above' _RE The same applies.

According to method 1, the ue may obtain N 'by scaling the number of REs per PRB obtained based on a first symbol set of the plurality of symbol sets' _RE,total . Here, in case of scaling, an overhead value may be included. More specifically, N' _RE,total ＝N' _RE *K＝(N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1)-N ^PRB _oh (1))*K。

Here, N ^RB _SC ＝12，N ^sh _symb (1) Representing the number of symbols comprised in the first set of symbols, N ^PRB _DMRS (1) Representing the number of DMRS REs included in the first symbol set, N ^PRB _oh (1) An overhead value representing the first set of symbols.

Here, in the case of the repeated PUSCH transmission type a, the number of symbols included in the first symbol set is the same as the number of symbols allocated for PUSCH transmission in a single slot, and in the case of the repeated PUSCH transmission type B, the number of symbols included in the first symbol set is the same as the number of symbols allocated in a single nominal repetition.

Here, K represents the number of slots for PUSCH transmission in the case of the repeated PUSCH transmission type a, and K represents the nominal number of repetitions for PUSCH transmission in the case of the repeated PUSCH transmission type B.

Fig. 20 and 21 illustrate a method of determining a TBS of a nominal PUSCH in the case of repeating PUSCH transmission type a. In fig. 20 and 21, K is '2', the first symbol set is 14 symbols in the first slot (slot # 1), and the second symbol set is 14 symbol sets in the second slot (slot # 2). Assume that a first set of symbols is used as the set of symbols to be used first, and N ^PRB _oh ＝12,

N' _RE,total ＝(N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1)-N ^PRB _oh (1))*K＝(12*14-24-12)*2＝264。

In this case N ^PRB _oh (1) Can be obtained by the following method.

According to methods 1-0, N ^PRB _oh (1) May be a value configured by the base station for the UE. For example, the base station may configure 6 for the UEA single value of 12, 18, etc., which the UE may consider to be N ^PRB _oh (1)。

According to method 1-1, the overhead value (N) of the first symbol set may be obtained by scaling the value (xOverhead) configured by the base station for the UE alone ^PRB _oh (1)). The scaling method may be different according to the unit of a value (xOverhead) configured for the UE by the application base station. The element may be at least one of an overhead per predetermined RE or symbol, an overhead per symbol set, an overhead per slot, an overhead per TB, and an overhead of maximum PUSCH scheduling per TB.

1) Overhead per RE or symbol: the UE may consider a value (xoverheads) configured by the base station for the UE as an overhead value per RE or symbol.

Where it is considered as an overhead value per symbol, N can be determined ^PRB _oh (1)＝f(xOverhead*N ^sh _symb (1)). This may be accomplished by using the number of symbols (N ^sh _symb (1) Scaling the xOverhead.

Where it is considered as an overhead value per RE, N can be determined ^PRB _oh (1)＝f(xOverhead*(N ^RB _SC *N ^sh _symb (1))). This may be done by using the number of REs in the first symbol set ((N) ^RB _SC *N ^sh _symb (1) Scaling the xOverhead.

Where it is considered as an overhead value per RE other than DMRS, N may be determined ^PRB _oh (1)＝f(xOverhead*(N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1))). This may be achieved by using the number (N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1) Scaling the xOverhead.

2) Overhead per symbol set: the UE may consider a value (xOverhead) configured by the base station for the UE as an overhead value of a symbol set for transmitting PUSCH.

In this case, as N ^PRB _oh (1) Overhead values for the symbol set may be used.Namely N ^PRB _oh (1)＝xOverhead。

In this case, N may be used by converting the overhead value of the symbol set into the overhead value of the slot ^PRB _oh (1). That is, N is included in the first symbol set ^sh _symb (1) In the case of a single symbol, N can be determined ^PRB _oh (1) =f (xOverhead x nslotsmb/Nshsymb (1)). Here, N ^slot _symb Representing the number of symbols included in a single time slot.

3) Overhead per slot: the UE may consider a value (xoverheads) configured by the base station for the UE as an overhead value for the slot.

In this case, as N ^PRB _oh (1) Overhead values for the symbol set may be used. Namely N ^PRB _oh (1)＝xOverhead。

In this case, N may be used by converting the overhead value of the slot into the overhead value of the symbol set ^PRB _oh (1). That is, N is included in the first symbol set ^sh _symb (1) In the case of a single symbol, N can be determined ^PRB _oh (1)＝f(xOverhead*N ^sh _symb (1)/Nslotsymb)。

4) Overhead per PUSCH of transmission TB: the UE may consider a value (xoverheads) configured by the base station for the UE as an overhead value of PUSCH for transmitting TBs.

Assuming that all symbol sets comprise the same number of symbols, the overhead value (N) of the first symbol set may be obtained by dividing the value configured by the base station for the UE by the number of symbol sets ^PRB _oh (1)). In the case where the total number of symbol sets is K, N can be determined ^PRB _oh (1)＝f(xOverhead/K)。

Assuming each symbol set has a different number of symbols, an overhead value (N) of the first symbol set may be determined based on a value (xOverhead) configured by the base station for the UE and a ratio of the number of symbols included in the first symbol set to the total number of symbols ^PRB _oh (1)). Here, in the case of the number of symbols included in the symbol set i, the total number of symbols may be. Thus, it can be calculated based on equation 1 given belowCalculating N ^PRB _oh (1)。

[ equation 1]

The UE may consider a value (xOverhead) configured by the base station for the UE as an overhead value of REs excluding DMRS of a PUSCH transmitting the TB. The overhead value (N) of the first symbol set may be determined according to the value (xoverheads) configured by the base station for the UE and the ratio of the number of REs (excluding DMRS) included in the first symbol set to the total number of REs (excluding DMRS) of all symbol sets ^PRB _oh (1)). Excluding the number of REs included in the first symbol set of DRMS as N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1) And the total RE of all symbol sets except the DMRS isThus, N can be calculated based on equation 2 given below ^PRB _oh (1)。

[ equation 2]

5) Overhead of maximum PUSCH for transmission TB: the UE may consider a value (xOverhead) configured by the base station for the UE as an overhead value of the maximum PUSCH for transmitting TBs.

Assuming that all symbol sets include the same number of symbols, the overhead value (N) of the first symbol set may be obtained by dividing the value (xOverhead) configured by the base station for the UE by the maximum number of obtained symbol sets ^PRB _oh (1)). Here, the maximum number of symbol sets may be the number of symbol sets that can be maximally scheduled when PUSCH is scheduled. At the maximum number of symbol sets is K _max In the case of (2), N can be calculated based on equation 3 given below ^PRB _oh (1)。

[ equation 3]

N ^PRB _oh (I)＝f(xOverhead/K _max )

Assuming each symbol set has a different number of symbols, an overhead value (N) of the first symbol set may be determined based on a value (xOverhead) configured by the base station for the UE and a ratio of the number of symbols included in the first symbol set to a maximum number of symbols ^PRB _oh (1)). Here, the maximum number of symbols may be the number of symbols included in a symbol set that can be maximally scheduled when the PUSCH is scheduled. Where the maximum number of symbols is N ^sh _symb,max In the case of (2), N can be calculated based on equation 4 given below ^PRB _oh (1)。

[ equation 4]

The UE may consider a value (xOverhead) configured by the base station for the UE as an overhead value of REs excluding DMRS of PUSCH transmitting the TB. The overhead value (N) of the first symbol set may be determined according to a value (xOverhead) configured by the base station for the UE and a ratio of the number of REs included in the first symbol set (excluding the DMRS) to the maximum number of REs of all symbol sets (excluding the DMRS) ^PRB _oh (1)). The number of REs included in the first symbol set excluding the DMRS may be N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1). Here, the maximum number of REs (excluding DMRS) of all symbol sets may be the number of REs included in a symbol set that can be maximally scheduled when PUSCH is scheduled, excluding DMRS. At the maximum number of RE N _RE，max In the case of (2), N can be calculated according to equation 5 given below ^PRB _oh (1)。

[ equation 5]

In the present disclosure, f (x) is at least one of ceil (x), floor (x), or round (x). ceil (x) represents the smallest integer among the numbers greater than or equal to x. floor (x) represents the largest integer among the numbers less than or equal to x. round (x) represents an integer obtained by rounding x to the nearest integer.

According to method 1, the xoverheads may not be separately configured in case that the overhead value configured for the UE is a constant value of 0. In this case, N can be determined ^PRB _oh (1)＝0。

According to method 2, the ue may obtain N 'by scaling the number of REs per PRB obtained based on the first symbol set of the plurality of symbol sets' _RE,total . Here, the overhead value (N can be excluded in the case of scaling ^PRB _oh ). More specifically, N 'is calculated' _RE,total ＝(N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1))*K-N ^PRB _oh . Here, N ^RB _SC ＝12，N ^sh _symb (1) Representing the number of symbols comprised in the first set of symbols, N ^PRB _DMRS (1) Represents the number of DMRS REs included in the first symbol set, and N ^PRB _oh (1) An overhead value representing the first set of symbols. For example, as shown in FIG. 20, at N ^PRB _oh In the case of=12, N 'can be calculated based on equation 6 given below' _RE,total 。

[ equation 6]

Obtaining N ^PRB _oh The method of (2) is as follows.

According to method 2-0, N ^PRB _oh May be a value (xOverhead) configured by the base station for the UE. For example, the base station may configure a single value in 6, 12, 18, etc. for the UE, and the UE may consider the value to be N ^PRB _oh . For reference, the range of values (xoverheads) configured by the base station may be different according to the number of slots scheduled by the base station, the number of symbol sets, the number of symbols included in the symbol sets, and the like. For example, the value of the base station configuration (xOverhead) may include 24, 30, 36 etc. in addition to 6, 12, 18.

According to method 2-1The overhead value (N) may be obtained by scaling the base station configured value (xOverhead) for the UE alone ^PRB _oh ). Although method 2 excludes overhead values (N ^PRB _oh ) But this may indicate that the overhead value of the first set of symbols is not scaled. That is, the N may be obtained as N by performing scaling according to another method than scaling of the first symbol set ^PRB _oh Is used for the overhead value of (a). The scaling method may be different according to the unit of a value (xOverhead) configured for the UE by the application base station. The element may be at least one of an overhead per predetermined RE or symbol, an overhead per symbol set, an overhead per slot, an overhead per TB, or an overhead of maximum PUSCH scheduling per TB.

In the case where the value is considered to be an overhead value per symbol,

or alternatively

May be determined. Here, K represents the total number of symbol sets.

In the case where the value is considered to be an overhead per RE value, it can be determined that

Or (b)

In the case where the value is considered to be an overhead value per RE (excluding DMRS), it can be determined that

Or (b)

2) Overhead per symbol set: the UE may consider a value (xOverhead) configured by the base station for the UE as an overhead value of a symbol set in which PUSCH is transmitted.

In this case, the overhead value (N) may be obtained by multiplying the value (xOverhead) configured by the base station for the UE by the number of symbol sets ^PRB _oh ). In the case where the total number of symbol sets is K, N can be determined ^PRB _oh ＝f(xOverhead*K)。

In this case, the overhead value (N may be used by converting the overhead value of the symbol set into the overhead value of the slot ^PRB _oh ). That is, it can be determined that

Or alternatively

Here, N ^slot _symb Representing the number of symbols included in a single time slot.

3) Overhead per slot: the UE may consider a value (xoverheads) configured by the base station for the UE as an overhead value per slot.

In this case, the overhead value (N) may be obtained by multiplying the value (xoverheads) configured by the base station for the UE by the number of slots occupied by PUSCH transmitting the corresponding TB in the time domain ^PRB _oh ). In the case that the number of time slots occupying the time domain is K, N can be determined ^PRB _oh ＝f(xOverhead*K)。

In this case, the overhead value (N may be used by converting the overhead value of the slot into the overhead value of the symbol set ^PRB _oh ). That is, it can be determined that

Or (b)Here, N ^slot _symb Representing the number of symbols included in a single slot.

In this case, the overhead value of PUSCH transmitting TB may be used as N ^PRB _oh . Namely N ^PRB _oh ＝xOverhead。

Assuming that the number of symbols of all symbol sets is the same, an overhead value (N) may be obtained by dividing the value (xOverhead) configured by the base station for the UE by the maximum number of symbol sets ^PRB _oh ). Here, the maximum number of symbol sets may be the number of symbol sets that can be maximally scheduled when PUSCH is scheduled. At the maximum number of symbol sets of K _max In the case of (a), N can be determined ^PRB _oh ＝f(xOverhead/K _max )。

Assuming that the number of symbols in each symbol set is different, the value (xOverhead) configured by the base station for the UE can be based on the average number of symbols in the corresponding symbol setDetermining an overhead value (N ^PRB _oh ). Here, the maximum number of symbols may be the number of symbols that are included in the symbol set and that can be maximally scheduled when the PUSCH is scheduled. At the maximum number of symbols N ^sh _symb,max In the case of (a) the number of the cells,

can be determined to

The UE may consider a value (xOverhead) configured by the base station for the UE as an overhead value of REs excluding DMRS of a PUSCH transmitting the TB. The overhead value (N) may be determined according to the value (xoverheads) configured by the base station for the UE and the ratio of the average number of REs (excluding DMRS) of the corresponding symbol set to the maximum number of REs (excluding DMRS) of all symbol sets ^PRB _oh ). The average number of REs (excluding DMRS) of the corresponding symbol set may beHere, the maximum number of REs (excluding DMRS) of all symbol sets may be the number of REs included in a symbol set that can be maximally scheduled when PUSCH is scheduled, excluding DMRS. In the case that the maximum number of REs is the same, it is determined that />

According to method 2-2, an overhead value based on the number of symbol sets used for PUSCH transmission may be configured for the UE by the base station. Where the number of symbol sets is K and the configured overhead value isIn the case of (a) the number of the cells,

can be givenThat is, here, ++>May be configured by the base station as separate values.

According to method 2-3, the base station may configure the UE with an overhead value based on the number of symbols per symbol set for PUSCH transmission. At symbol setIs K and the number of symbols per symbol set is L, and the configuration overhead value based on the number of symbols per symbol set isIn the case of (a), can be given

That is, in this case,may be configured by the base station as separate values.

According to method 2, the xoverheads may not be separately configured in case that the overhead value configured for the UE is a constant value of 0. In this case, N can be determined ^PRB _oh ＝0。

According to method 3, N' _RE,total The number of REs per PRB obtained based on a plurality of symbol sets may be obtained. More specifically, the number of symbols included in the ith symbol set is N ^sh _symb (i) The number of DMRS REs of the ith symbol set is N ^PRB _DMRS (i) And the overhead value of the ith symbol set is N ^PRB _oh (i) In the case of (a), can calculate

Here, the overhead value N ^PRB _oh (i) May be the same in all symbol sets or may be different for each symbol set.

For reference, in method 3, the number of symbols included in each symbol set is the same, i.e., N ^sh _symb (i)＝N ^sh _symb The number of DMRS REs included in each symbol set is the same, i.e., N ^PRB _DMRS (i)＝N ^PRB _DMRS And the overhead value of each symbol set is the same, i.e., N ^PRB _oh (i)＝N ^PRB _oh In the case of (2), this can be expressed as N' _RE,total ＝(N ^RB _SC *N ^sh _symb -N ^PRB _DMRS -N ^PRB _oh ) K, which is the same as method 1. Thus, the method 3 may be applicable in case that the number of symbols included in each symbol set is different, the number of DMRS REs included in each symbol set is different, or the overhead value of each symbol set is different.

For reference, in method 3, each symbol set may have overhead values different from each other. Determining different overhead values N for the ith symbol set ^PRB _oh (i) The method of (2) is as follows.

According to method 3-0, an independent overhead value for each symbol set may be configured or indicated. To determine the per-symbol set overhead value N for a single PUSCH ^PRB _oh (i) The overhead value of each symbol set may be configured or indicated individually by the base station for the UE. That is, for K symbol sets, N may be configured or indicated for the UE by the base station ^PRB _oh (1)、N ^PRB _oh (2)、…、N ^PRB _oh (K)。

According to method 3-1, the overhead value (N) of the ith symbol set can be obtained by scaling the value (xOverhead) configured by the base station for the UE alone ^PRB _oh (i) A kind of electronic device. The scaling method may be different according to the unit of a value (xOverhead) configured for the UE by the application base station. The element may be at least one of an overhead per predetermined RE or symbol, an overhead per symbol set, an overhead per slot, an overhead per TB, and an overhead of maximum PUSCH scheduling per TB.

In the case of being considered as an overhead value per symbol, N can be determined ^PRB _oh (i)＝f(xOverhead*N ^sh _symb (i) A kind of electronic device. This can be achieved by using the number of symbols (N ^sh _symb (i) Scaling the xOverhead.

In the case of being considered as an overhead value per RE, N can be determined ^PRB _oh (i)＝f(xOverhead*(N ^RB _SC *N ^sh _symb (i) A) of the above-mentioned materials. This can be achieved by using the number of REs in the ith symbol set (N ^RB _SC *N ^sh _symb (i) ) to scale xOverhead.

In the case of being considered as overhead value per RE (excluding DMRS), N can be determined ^PRB _oh (i)＝f(xOverhead*(N ^RB _SC *N ^sh _symb (i)-N ^PRB _DMRS (i) A) of the above-mentioned materials. This can be achieved by using the number (N ^RB _SC *N ^sh _symb (i)-N ^PRB _DMRS (i) ) to scale xOverhead.

In this case, as N ^PRB _oh (i) Overhead values for the symbol set may be used. Namely N ^sh _symb (i)＝xOverhead。

In this case, N may be used by converting the overhead value of the symbol set into the overhead value of the slot ^PRB _oh (i) A. The invention relates to a method for producing a fibre-reinforced plastic composite That is, N is included in the ith symbol set ^sh _symb (i) In the case of a single symbol, N can be determined ^PRB _oh (i)＝f(xOverhead*N ^slot _symb /N ^sh _symb (i) A kind of electronic device. Here, N ^slot _symb Representing the number of symbols included in a single time slot.

In this case, as N ^PRB _oh (i) Overhead values for the symbol set may be used. Namely N ^PRB _oh (i)＝xOverhead。

In this case, N may be used by converting the overhead value of the symbol set into the overhead value of the slot ^PRB _oh (i) A. The invention relates to a method for producing a fibre-reinforced plastic composite That is, N is included in the ith symbol set ^sh _symb (i) In the case of a single symbol, N can be determined ^PRB _oh (i)＝f(xOverhead*N ^sh _symb (i)/N ^slot _symb )。

Assuming that all symbol sets include the same number of symbols, the overhead value (N) of the i-th symbol set may be obtained by dividing the value (xOverhead) configured by the base station for the UE by the number of symbol sets ^PRB _oh (i) A kind of electronic device. In the case where the total number of symbol sets is K, N is determined ^PRB _oh (i)＝f(xOverhead/K)。

Assuming each symbol set has a different number of symbols, an overhead value (N) of the ith symbol set may be determined based on a value (xOverhead) configured by the base station for the UE and a ratio of the number of symbols included in the ith symbol set to the total number of symbols ^PRB _oh (i) A kind of electronic device. Here, in the case of the number of symbols included in the i-th symbol set, the total number of symbols may beTherefore, it can be determined as +.>

The UE may consider a value (xoverheads) configured by the base station for the UE as an overhead value of REs (excluding DMRS) of a PUSCH transmitting the TB. The overhead value (N) of the ith symbol set may be determined according to the value (xOverhead) configured by the base station for the UE and the ratio of the number of REs included in the ith symbol set (excluding DMRS) to the total number of REs of all symbol sets (excluding DMRS) ^PRB _oh (i) A kind of electronic device. The ith symbol set includes N REs (excluding DMRS) ^RB _SC *N ^sh _symb (i)-N ^PRB _DMRS (i) The total number of REs (excluding DMRS) for all symbol sets isTherefore, it can be determined as +.>

Assuming that all symbol sets include the same number of symbols, the overhead value (N) of the ith symbol set may be obtained by dividing the value (xOverhead) configured by the base station for the UE by the maximum number of symbol sets ^PRB _oh (i) A kind of electronic device. Here, the maximum number of symbol sets may be the number of symbols that can be maximally scheduled when PUSCH is scheduled. At the maximum number of symbol sets of K _max In the case of (2), is determined as N ^PRB _oh (i)＝f(xOverhead/K _max )。

Assuming that each symbol set has a different number of symbols, an overhead value (N) of the ith symbol set may be determined based on a value (xOverhead) configured by the base station for the UE and a ratio of the number of symbols included in the ith symbol set to the maximum number of symbols ^PRB _oh (i) A kind of electronic device. Here, the maximum number of symbols may be the number of symbols that are included in the symbol set and that can be maximally scheduled when the PUSCH is scheduled. At the maximum number of symbols N ^sh _symb,max In the case of (2), is determined as N ^PRB _oh (i)＝f(xOverhead*N ^sh _symb (i)/N ^sh _symb,max )。

The UE may consider the value (xoverheads) configured by the base station for the UE as an overhead value of REs (excluding DMRS) of PUSCH transmitting TBs. The overhead value (N) of the ith symbol set may be determined according to the value (xOverhead) configured by the base station for the UE and the ratio of the number of REs included in the ith symbol set (excluding DMRS) to the maximum number of REs of all symbol sets (excluding DMRS) ^PRB _oh (i) A kind of electronic device. The number of REs (excluding DMRS) included in the ith symbol set may be N ^RB _SC *N ^sh _symb (i)-N ^PRB _DMRS (i) A. The invention relates to a method for producing a fibre-reinforced plastic composite Here, the maximum number of REs (excluding DMRS) of all symbol sets may be the number of REs included in a symbol set that can be maximally scheduled when PUSCH is scheduled, except for DMRS. At the maximum number of REs is N _RE，max In the case of (a), is determined as

According to method 3-2, the base station may configure the UE with an overhead value based on the number of symbol sets used for PUSCH transmission. Where the number of symbol sets is K and the configured overhead value isCan be given asThat is, here, ++>May be configured by the base station as separate values.

According to method 3-3, an overhead value based on the number of symbols per symbol set for PUSCH transmission may be configured for the UE by the base station. In this case, the UE may apply a different overhead value for each symbol set. In the case where the number of symbol sets is K, the number of symbols in the symbol set is L, and the overhead value of the i-th symbol set is configured to be Can be given as +.>Number of symbols in each symbol set that can be configuredIs the case for (a). Thus, it can be given as +.>That is, here, ++>May be configured by the base station as separate values.

According to method 3, the xoverheads may not be separately configured in case that the overhead value configured for the UE is a constant value of 0. In this case, it can be determined as N ^PRB _oh (i)＝0。

Although it is described that the overhead value for determining the TBS of the UE is obtained according to method 3, the TBS calculation procedure to be performed later may be performed according to another method. For example, although N 'is the number of REs per PRB' _RE The overhead value of (a) is calculated according to method 3, but the subsequent calculation process may be performed according to method 2. That is, N 'is calculated in method 2' _RE ＝(N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1))*K-N ^PRB _oh In the case of (2), N ^PRB _oh May beI.e. the sum of the overheads values of all the symbol sets obtained according to method 3, and the remaining value may be a value obtained by scaling the value obtained based on the first symbol set. Thus, the number of REs per PRB can be calculated as N' _RE ＝(N ^RB _SC *N ^sh _symb (1)-N ^PRB _DMRS (1))*K-

/>

Although method 3 will be the overhead value N of the different overhead values ^PRB _oh (i) To apply to each symbol set, method 4 may scale and apply a single overhead value. That is, it can be calculated asHere, the scaling may be based on K.

According to method 5, an overhead value based on the number of symbol sets used for PUSCH transmission may be configured for the UE by the base station. Where the number of symbol sets is K and the configured overhead value isIn the case of (a), can be givenFor reference, the number of symbol sets may be changed to the number of symbols included in the symbol set and may be applied.

According to the second embodiment, the correction can be based on N 'as follows' _RE,total The number of REs allocated to all PRBs for PUSCH transmission (N _RE ＝min(156,N' _RE )*n _PRB ) Is calculated by the computer.

According to embodiment (2-1), the method of the present invention can be carried out by applying N' _RE The N 'obtained in the first embodiment was previously applied' _RE,total To perform the calculations. That is, the number of REs allocated to all PRBs for PUSCH transmission may be calculated as N _RE ＝min(156,N' _{RE_total} )*n _PRB 。

According to embodiment (2-2), N obtained in embodiment (2-1) can be obtained by scaling _RE Is used to perform the calculation. More specifically, can be based on N _RE ＝min(156,N' _{RE_total} )*n _PRB * The equation for K is calculated.

According to embodiment (2-2), N 'may preferably be determined according to method 0 of the first embodiment' _{RE_total} . That is, it can be calculated as N 'according to method 0' _{RE_total} ＝N ^RB _SC *N ^sh _symb -N ^PRB _DMRS -N ^PRB _oh 。

For example, referring to fig. 21, assume that k=2, n ^PRB _oh =12, and N' _{RE_total} =132, ue can calculate N _RE ＝min(156,N' _{RE_total} )*n _PRB *K＝min(156,132)*8*2＝2112。

In embodiment (2-2), N 'is obtained using method 0 of the first embodiment' _{RE_total} In the case of the value of (2), N 'in the case of normal CP' _{RE_total} The value of (a) may be 14 (symbol) by 12 (subcarrier) =168, and N 'in the case of extended CP' _{RE_total} The value of (a) may be less than or equal to 2 (symbols) x 12 (subcarriers) =144. However, in embodiment (2-2), N 'is obtained in the methods 1 to 5 of the first embodiment' _{RE_total} In the case of the value of N' _{RE_total} The value of (c) may be increased according to K. For example, referring to FIG. 20, N 'of method 1' _{RE_total} The value of (2) may be given as 264. Thus, although there are a large number of REs that are actually effective (i.e., although N' _{RE_total} Very high), but a value greater than 156 may not be min (156, N 'as in embodiment (2-1) or embodiment (2-2)' _{RE_total} ) Obtained as a result of (a). The number of symbols occupied by PUSCH transmission increases. Thus, in order to obtain a higher TBS, the reaction temperature is set at N' _{RE_total} >156, an adjustment 156, i.e. the maximum number of REs that can be determined for each PRB, may be required. In the following, embodiments are disclosed that are associated with a method of adjusting 156 the maximum number of REs that can be determined for each PRB.

According to a third embodiment, the UE may scale and apply the maximum number of REs that can be determined for each PRB. More specifically, in embodiment (2-1) or embodiment (2-2), min (156, N' _{RE_total} ) Can be changed to min (156 x K, N' _RE,total )。

In case that the third embodiment is applied to the (2-1) th embodiment, REs of all PRBs allocated for PUSCH transmissionThe number of (2) may be given as N _RE ＝min(156*K,N' _{RE_total} )*n _PRB 。

For example, referring to fig. 20, it is assumed that k=2 and N in the case where the method 1 of the first embodiment is applied ^PRB _oh =12, N 'can be calculated' _RE,total ＝(N ^RB _SC *N ^sh _symb -N ^PRB _DMRS -N ^PRB _oh ) K= (12 x 14-24-12) x 2 = 264. According to the existing scheme, min (156, N' _RE,total ) =min (156,264) =156. However, according to a third embodiment, min (156 x 2, n' _RE,total ) =min (312,264) =264. Thus, the UE may determine the TBS for a greater number of REs.

According to the fourth embodiment, the UE may apply the configured or indicated predetermined value as the maximum number of REs that can be determined for each PRB. That is, in the (2-1) th embodiment or the (2-2) th embodiment, min (156, N' _{RE_total} ) Can be changed to min (RE) _max ,N' _RE,total ) And a predetermined value is given as RE _max 。

For example, the maximum number of REs that can be determined for each PRB based on the number of PUSCH REs including the DMRS and the overhead REs can be calculated as REs _max ＝N ^RB _SC *N ^sh _symb . Here, N ^sh _symb Is a given value in the first embodiment. Referring to fig. 20, the number of symbols occupied by pusch in the time domain is 28. Thus RE _max ＝N ^RB _SC *N ^sh _symb =12×28=336, and N can be used _RE ＝min(336,N' _RE,total )*n _PRB And calculating the RE number of all PRBs allocated to the PUSCH transmission.

As another example, the maximum number of REs that can be determined for each PRB based on the number of PUSCH REs including DMRS and overhead REs may be calculated as REs _max ＝N ^RB _SC *N ^sh _symb -X. Here, N ^sh _symb Is a given value in the first embodiment. X may be a value of a higher layer configuration or may be a constant value of x=12.

As another example, it may be based onDown information determination RE _max 。

As the first information, the UE may apply a value configured by a higher layer as RE _max ，RE _max Is the maximum number of REs that each PRB can determine. When TBSs for multiple slots or multiple nominal PUSCHs, the UE may expect appropriate values to be configured as REs by the base station _max 。

As the second information, the UE may apply a value indicated by DCI in the PDCCH scheduling PUSCH as the maximum number of REs that can be determined per PRB _max . When determining a TBS for multiple slots or multiple nominal PUSCHs, the UE may expect the appropriate value to be indicated as RE by DCI in PDCCH of scheduled PUSCH _max 。

In case that PUSCH and PUCCH transmitted in a single slot overlap in at least one symbol, the UE may not be able to simultaneously transmit PUSCH and PUCCH. In this case, the UE may multiplex UCI of the PUCCH with PUSCH and may perform transmission. Here, the multiplexing indication transmits UCI through PUSCH.

In order to multiplex UCI with PUSCH, it is necessary to determine resources for UCI transmission among resources for PUSCH. This is called the number of modulation symbols (RE number) used for UCI transmission. From TS 38.212, the ue may determine the number of modulation symbols per layer to be mapped to HARQ-ACK, CSI part 1 or CSI part 2 transmission of PUSCH according to equations 7 to 9 below.

In the case where the repeated PUSCH transmission type is not type B and includes UL-SCH, the number of modulation symbols per layer of HARQ-ACK transmission to be mapped to PUSCH can be obtained by the following equation 7.

[ equation 7]

Here, O _ACK Representing the number of HARQ-ACK bits;

L _ACK the number of CRC bits representing HARQ-ACK;

β ^PUSCH _offset ＝β ^HARQ-ACK _offset offset representing base station configuration or indicationA value for determining the number of resources of the PUSCH to which the HARQ-ACK is mapped;

C _UL-SCH a number of Code Blocks (CBs) representing UL-SCH;

K _r an r-th CB size indicating the UL-SCH;

M ^UCI _sc (l) Representing the number of REs for UCI transmission in the l-th PUSCH symbol;

N ^PUSCH _symb,all Representing a total number of symbols for PUSCH transmission including the DMRS;

alpha represents a scaling value of a higher layer configuration;

l ₀ and represents an index of a first PUSCH symbol different from the DMRS after the first DMRS symbol.

In case the DMRS is transmitted in the first symbol, it corresponds to M ^UCI _sc (l) =0. Otherwise, it corresponds to M ^UCI _sc (l)＝M ^PUSCH _sc -M ^PT-RS _sc (l) A. The invention relates to a method for producing a fibre-reinforced plastic composite Here, M ^PUSCH _sc Represents the number of subcarriers scheduled in PUSCH in frequency domain, and M ^PT-RS _sc (l) The number of subcarriers including the first PUSCH symbol of PTRS is represented.

The UE may be based on Q 'obtained from equation 7' _ACK The modulation symbols (number of REs) multiplex UCI with PUSCH.

In the case where the repeated PUSCH transmission type is different from type B and includes the UL-SCH, the UE may determine the number of modulation symbols per layer for CSI part 1 transmission to be mapped to the PUSCH according to equation 8 below.

[ equation 8]

In this context,

-

O _CSI-I

the number of bits of CSI part 1;

-if O _CSI-1 ≥360，L _CSI-1 ＝11

Otherwise, L _CSI-1 Is the number of CRC bits for CSI part 1.

-

An offset value configured or indicated by the base station to determine the number of resources in PUSCH to which the CSI 1 st part is to be mapped;

-

in case of HARQ-ACK higher than 2 bits, Q' _ACK Representing the number of modulation symbols per layer for HARQ-ACK transmission. In case of HARQ-ACK less than 2 bits, this is expressed as In this case, the +.>Representing the number of reverse resource elements in OFDM symbol/for potential HARQ-ACK transmission;

in the case where the repeated PUSCH transmission type is different from type B and includes the UL-SCH, the UE may determine the number of modulation symbols per layer for CSI 2 part transmission to be mapped to the PUSCH according to equation 9 below.

[ equation 9]

-

O _CSI-2 A bit number representing CSI part 2;

-if O _CSI-2 ≥360，L _CSI-2 =11; otherwise, L _CSI-2 Is the number of CRC bits for CSI part 2.

-

An offset value configured or indicated by the base station to determine the number of resources in PUSCH to which the CSI 2 nd part is to be mapped;

-

Q′ _CSI-1 the number of modulation symbols per layer of CSI part 1 transmitted in PUSCH is represented.

Through the above equations 7 to 9, the ue can determine the number of modulation symbols (Q 'in PUSCH for HARQ-ACK transmission' _ACK ) Modulation symbol number (Q 'for CSI part 1 transmission' _CSI-1 ) And the number of modulation symbols (Q 'for CSI 2 part transmission' _CSI-2 ). Based on the equation, the following can be identified.

The equation for determining the number of modulation symbols is provided in the form of min { X, Y }. I.e. the number of modulation symbols is less than X and Y.

Here, X determines the number of modulation symbols required to transmit UCI in PUSCH. For example, the number of modulation symbols required to transmit the HARQ-ACK may be determined as The number of modulation symbols is based onAnd (3) determining. That is, as->High UCI transmission may require more modulation symbols.

Here, Y determines the maximum number of modulation symbols required to transmit UCI in PUSCH. The maximum number of modulation symbols may be adjusted based on the alpha value. That is, the base station configures an appropriate α value, and can determine the maximum number of modulation symbols for transmitting UCI in PUSCH and the minimum number of modulation symbols for transmitting UL-SCH in PUSCH.

■ For example, when transmitting HARQ-ACKs in PUSCH, the maximum number of modulation symbols used for HARQ-ACK transmission isHere, a->Indicating the number of REs in PUSCH to which HARQ-ACKs are to be mapped. For reference, HARQ-ACK is mapped after the first DM-RS of PUSCH and is therefore denoted as l=l ₀ 。

■ When transmitting the CSI 1 st part in PUSCH, the maximum number of modulation symbols used to transmit the CSI 1 st part is

Here the number of the elements is the number,indicating the number of REs to which CSI part 1 is mapped in PUSCH. For reference, CSI part 1 is mapped from the first symbol of PUSCH, denoted as l=0. Depending on the configuration of the base station a,

the RE may be used for CSI part 1. However, the modulation symbol (Q 'of HARQ-ACK' _ACK ) Mapped to some REs, thus requiring the exclusion of the modulation symbols (Q 'of HARQ-ACK' _ACK ) Is a number of (3).

■ When transmitting the CSI 2 nd part in PUSCH, the maximum number of modulation symbols used to transmit the CSI 2 nd part is

Here the number of the elements is the number,indicating the number of REs to which CSI part 2 is mapped in PUSCH. For reference, CSI part 2 is mapped from the first symbol of PUSCH, denoted as l=0. Depending on the configuration of the base station a,

the RE may be used for CSI part 2. However, the modulation symbol (Q 'of HARQ-ACK' _ACK ) And modulation symbols of CSI 1 st part (Q' _CSI-1 ) Mapped to some REs, thus requiring the exclusion of the modulation symbols (Q 'of HARQ-ACK' _ACK ) Number and modulation symbols of CSI 1 st part (Q' _CSI-1 ) A number.

Equations 7 to 9 can be applied when PUSCH transmits TBs in a single slot. That is, the parameters of equations 7 to 9 may be values defined in a single slot. For example, N ^PUSCH _symb,al Representing the total number of symbols for PUSCH transmission in a single slot. C (C) _UL-SCH Indicating the number of CBs included in the UL-SCH of the PUSCH transmitted in a single slot.

Further, in the case where PUSCH is repeatedly transmitted in a plurality of slots (repeated PUSCH transmission type a), the equation may be applied. In this case, the parameters of equations 7 to 9 may be values defined in slots in which overlap with the PUCCH occurs. For example, N ^PUSCH _symb,all Representing the total number of symbols for PUSCH transmission in a slot overlapping with PUCCH, C _UL-SCH The number of CBs included in the UL-SCH of the PUSCH transmitted in the slot occurring overlapping with the PUCCH is indicated.

As another example, the UE may perform single UCI multiplexing in one transmission occasion. In this case, when PUSCH transmits TB at one transmission occasion, equations 7 to 9 may be applicable. That is, the parameters of equations 7 to 9 may be values defined in one transmission opportunity. For example, N ^PUSCH _symb,all The total number of symbols for PUSCH transmission in one transmission occasion is represented. C (C) _UL-SCH Indicating the number of CBs included in the UL-SCH of the PUSCH transmitted at one transmission occasion.

Further, this equation may be applicable when PUSCH is repeatedly transmitted at a plurality of transmission occasions. In this case, the parameters of equations 7 to 9 may be values defined in transmission opportunities overlapping with the PUCCH. For example, N ^PUSCH _symb,all Indicating that overlap with PUCCH occursThe total number of symbols used for PUSCH transmission in a transmission occasion. C (C) _UL-SCH The number of CBs included in the UL-SCH of the PUSCH transmitted in the transmission opportunity overlapping with the PUCCH is indicated.

For reference, in the present disclosure, the transmission occasion may be the same as the symbol set already described above. That is, the symbol set of the repeated PUSCH transmission type a is a PUSCH transmitted in a single slot, and the symbol set of the repeated PUSCH transmission type B is a PUSCH transmitted through a single nominal repetition.

< method of multiplexing PUSCH and PUCCH in the case of transmitting TB via multiple slots >

Referring to fig. 22 and 23, in the case where a TB of a PUSCH is transmitted in a plurality of slots, each slot in which the TB is transmitted and a slot for PUCCH transmission may overlap. In this case, PUSCH and PUCCH may be multiplexed and transmitted. In this case, according to the above-described embodiment, PUSCH may be transmitted according to the repeated transmission type a or the repeated transmission type B. That is, the TBS of the PUSCH may be determined based on a plurality of symbol sets.

Hereinafter, unless otherwise stated, a description is provided with reference to the repeated PUSCH transmission type a. However, the following embodiments are also applicable to the repeated PUSCH transmission type B and the repeated PUSCH transmission type a.

In particular, in the case of transmitting a TB via PUSCH, the TB may be transmitted in a single slot. However, in case that the size of the TB is large, the TB may be transmitted in a plurality of slots. In this case, a single TB may be configured with at least one code block and may repeat transmission in a plurality of slots.

In this case, each slot transmitting a single TB and a slot for transmitting UCI of each PUCCH may overlap. In this case, PUSCH for transmitting TBs in each slot and UCI for PUCCH for UCI transmission multiplexed with PUSCH may be transmitted. That is, in case that the size of the TB is large, the TB may be transmitted via a plurality of slots, and UCI of the PUCCH may be transmitted for each slot. In this case, the symbol to which the TB is mapped and the symbol to which the UCI of the PUCCH is mapped may overlap in each slot, and the UE may multiplex the UCI of the PUCCH with the PUSCH in each slot and may transmit it to the base station.

For example, as shown in fig. 21 and 22, the UE may determine a TBS for a single PUSCH based on symbol sets of two slots (slot #1, slot # 2). The UE may receive an indication or configuration from the base station to transmit different PUCCHs in the symbol set of the two determined slots. That is, the indication or configuration shows transmission of a first PUCCH (PUCCH # 1) in a first slot (slot # 1) and transmission of a second PUCCH (PUCCH # 2) in a second slot (slot # 2). Through the above operation, the following problems may occur.

First, in case that a PUSCH resource collides with a plurality of PUCCH resources, the UE may select only one of the plurality of PUCCH resources and map UCI of a corresponding PUCCH to the PUSCH resource.

In this case, a single resource of UCI for transmitting PUCCH may be selected by one of the following methods.

One PUCCH may be a PUCCH including UCI having the highest priority among a plurality of PUCCHs. For example, the priority may be given in the order of HARQ-ACK > CSI part 1 > CSI part 2. In the case where the first PUCCH includes HARQ-ACK and the second PUCCH includes CSI part 1 or CSI part 2, the UE may select the first PUCCH, may map UCI (i.e., HARQ-ACK) of the corresponding PUCCH to PUSCH resources, and may transmit the resources.

Alternatively, one PUCCH may be determined according to a signal or channel of the scheduled PUCCH. For example, in case that the first PUCCH is scheduled via DCI and the second PUCCH is scheduled via an RRC signal or a signal from a higher layer, the UE may select the PUCCH scheduled via DCI. UCI of a corresponding PUCCH may be mapped to PUSCH resources and may be transmitted. This is because UCI transmitted by PUCCH scheduled through DCI may be considered more important.

Alternatively, one PUCCH may be determined in the time order of the symbols or slots of the scheduled PUCCH. For example, a PUCCH earlier than the other PUCCH may be selected between the first PUCCH and the second PUCCH. This is because transmitting the first PUCCH whose fast transmission is indicated may be considered important. As another example, a PUCCH later than the other may be selected between the first PUCCH and the second PUCCH. This is because the last PUCCH provides the longest processing time, and thus UCI of the PUCCH may be transmitted through PUSCH.

Alternatively, one PUCCH may be determined based on the resources occupied by the PUCCH. For example, one PUCCH may be a PUCCH resource including a small number of resources. The corresponding resources may include the number of symbols in the time domain, the number of PRBs in the frequency domain, or the number of REs in the time-frequency domain. For example, the UE may select PUCCH resources with a small number of REs and may use a larger number of resources for data transmission via PUSCH.

Alternatively, one PUCCH may be a PUCCH resource comprising a large number of resources. The corresponding resources may include the number of symbols in the time domain, the number of PRBs in the frequency domain, or the number of REs in the time-frequency domain. For example, in case a large number of REs are allocated to PUCCH resources, the main purpose may be coverage extension or reliable UCI transmission. Thus, transmission may be preferably performed via PUSCH.

Alternatively, a single PUCCH may be a resource that is indicated or configured to multiplex UCI with PUSCH. For example, in order to flexibly select PUCCH resources according to channel conditions, the UE may receive an indication of a predetermined PUCCH resource to perform UCI multiplexing with PUSCH subject to collision among a plurality of PUCCH resources from the base station.

In the above-described embodiments, the number of modulation symbols (the number of REs) used for UCI transmission may be determined based on the length of UCI of the selected PUCCH and resources occupied by PUSCH in slots of the selected PUCCH.

However, the method of selecting one PUCCH may not be able to separately multiplex UCI and PUSCH of a plurality of PUCCH resources. In this case, in case UCI of PUCCH which is not multiplexed with PUSCH and is not transmitted is HARQ-ACK, a waiting time of the corresponding HARQ-ACK may increase, which is a disadvantage. Preferably, in the NR system, the reliability of PUCCH is considered to be more important than that of PUSCH, and thus PUCCH transmission may be preferably performed. However, a predetermined PUCCH may not be transmitted in the above case, which is a disadvantage. Therefore, a solution is needed to overcome these problems.

According to an embodiment of the present disclosure, a UE may select one of a plurality of slots in which PUSCH is transmitted, and may collect UCI of a PUCCH overlapping with PUSCH and perform multiplexing in the selected slot.

Here, one slot may be determined as follows. To ensure the time to operate UCI by using PUSCH, the UE may multiplex UCI in the last slot of the slots in which PUSCH is transmitted. In this case, UCI is always multiplexed with the last slot of PUSCH, and PUSCH is not multiplexed in the remaining slots. Therefore, when transmitting PUSCH in the last slot, the UE may transmit PUSCH in consideration of UCI. However, according to this scheme, UCI is transmitted in a slot later than a slot indicating transmission of PUCCH, and thus a waiting time may additionally occur. As another example, to ensure a time to operate UCI by using PUSCH, the UE may multiplex UCI in a last slot of slots overlapping PUCCH among slots in which PUSCH is transmitted. That is, UCI is transmitted in the last slot overlapping with PUCCH, and thus latency may be reduced. However, UCI may need to be multiplexed in the middle of transmission of PUSCH.

In the above-described embodiments, the number of modulation symbols (the number of REs) used for UCI transmission may be determined according to the length of UCI collected to overlap PUCCHs and resources occupied by PUSCH in a slot in which UCI is multiplexed. That is, O in equation 7 _ACK Representing the number of bits of HARQ-ACKs in the collected UCI. O in equation 8 _CSI-1 Indicating the number of bits of CSI part 1 in the collected UCI. O in equation 9 _CSI-2 Indicating the number of bits of CSI part 2 in the collected UCI.

According to an embodiment of the present disclosure, a UE may multiplex UCI of a PUCCH overlapping a PUSCH in each of a plurality of slots where the PUSCH is transmitted.

Specifically, in case that a TBs as a TB size is determined based on a plurality of slots and UCI of different PUCCHs is transmitted in a corresponding slot of a PUSCH in which a TB is transmitted, the PUSCH and the PUCCH may be multiplexed and transmitted in the corresponding slot. In this case, the size (number of symbols or bits) of each parameter of UCI to be multiplexed may be calculated in each slot.

However, the size of each parameter of UCI to be multiplexed in each slot may be calculated based on the TBS. However, the TBS is determined based on a plurality of slots, and thus the TBS needs to be scaled on a per slot basis to calculate the size of each parameter of UCI to be multiplexed. Alternatively, the size of each parameter of UCI may be determined based on the unscaled TBS.

For example, as shown in fig. 22, in the case where the UE transmits PUSCH in a first slot (slot # 1) and a second slot (slot # 2), the first PUCCH (PICCH # 1) may overlap in the first slot, and the second PUCCH (PUCCH # 2) may overlap in the second slot. Here, the first UCI of the first PUCCH may be multiplexed with PUSCH in a first slot, and the second UCI of the second PUCCH may be multiplexed with PUSCH in a second slot.

In this case, it may be necessary to determine the number of modulation symbols (the number of REs) occupied by UCI of the PUCCH in each slot in which the PUCCH is multiplexed. In order to multiplex the first UCI in the first slot (slot # 1), Q 'in the first slot may be required' _ACK (1) And modulation symbols. In addition, in order to multiplex the second UCI in the second slot (slot # 2), Q 'in the second slot may be required' _ACK (2) And modulation symbols.

Referring to equations 7 through 9, it may be necessary to determine the number of bits of a TB (UL-SCH) included in the first slot in order to obtain Q 'of the first slot' _ACK (1) The symbols are modulated. It may be necessary to determine the number of bits of a TB (UL-SCH) included in the second slot in order to obtain Q 'of the second slot' _ACK (2) The symbols are modulated. In the present disclosure, a method of obtaining Q 'is disclosed' _ACK (1) Or Q' _ACK (2) Is a method of (2).

In this embodiment, the UE may arrange (map) a single TB in a symbol set of a plurality of slots. Thus, a portion of a single TB may be included in a single slot. Further, in the case where a single TB includes one or more CBs, a single CB may arrange (map to) a symbol set of a plurality of slots. Therefore, it is difficult to determine the number of CBs in a slot in which the UE wants to perform multiplexing of UCI.

To overcome the above problems, various embodiments of the present disclosure are disclosed.

< first embodiment: calculating the number of modulation symbols by scaling TBS >

According to the first embodiment, in the case where a single TB is transmitted in a plurality of slots, i.e., a single slot includes a part of TBs, the UE can determine the number of modulation symbols by adjusting (or scaling) one TBs mapped to the TBs of the plurality of slots based on the single slot. That is, the UE may scale the TBs based on the case of transmitting TBs in a single slot, and may calculate the number of modulation symbols of UCI of the PUCCH to be multiplexed with PUSCH.

In other words, the UE may scale the CB size (K _r ) And the number of modulation symbols (the number of REs) for transmitting UCI of each PUCCH may be calculated. That is, in case that N PUCCHs collide with PUSCH, Q 'of each PUCCH' _ACK Is Q' _ACK (1)、Q' _ACK (2)、…、Q' _ACK (N)，Q' _CSI-1 Is Q' _CSI-1 (1)、Q' _CSI-1 (2)、…、Q' _CSI-1 (N) and Q' _CSI-2 Is Q' _CSI-2 (1)、Q' _CSI-2 (2)、…、Q' _CSI-2 (N). In this case, the scaling values P (1), P (2), … P (N) may be determined based on the following information. In general, the number of modulation symbols according to the present disclosure may be obtained according to the following equations 10 to 12.

Equation 10 is an example of the number of modulation symbols of HARQ-ACK/NACK of UCI.

[ equation 10]

In equation 10, each parameter may be as follows.

-I represents an index of a slot to which HARQ-ACKs are to be multiplexed;

-O _ACK (i) Representing time slot iThe number of HARQ-ACK bits in (a);

-L _ACK (i) Representing the number of CRC bits in slot i;

-representing the number of REs for UCI transmission in the first PUSCH symbol of slot i;

-representing the total number of symbols of slot i for PUSCH transmission including DMRS;

-1 ₀ (i) Representing the index of a first PUSCH symbol different from the DMRS after the first DMRS symbol of slot i.

Equation 11 is an example of the number of modulation symbols of CSI 1 part of UCI.

[ equation 11]

In equation 11, each parameter may be as follows.

-O _CSI-1 (i) The number of bits representing CSI part 1 of slot i;

-if O _CSI-1 (i)≥360,L _CSI-1 (i) =11; otherwise, L _CSI-1 (i) Is the number of CRC bits for CSI part 1 of slot i.

Equation 12 is an example of the number of modulation symbols of CSI 2 part of UCI.

[ equation 12]

In equation 12, each parameter may be as follows.

-O _CSI-2 (i) The number of bits representing CSI part 2 of slot i;

at O _CSI-2 (i) In the case of ≡360, L _CSI-2 (i) Otherwise, L _CSI-2 (i) Is the number of CRC bits for the CSI 2 nd part of slot i;

comparing equations 10 to 12 and equations 7 to 9, the UE can determine the number of bits of the UL-SCH (TB) of the PUSCH in the ith slot asThe number of bits of the UL-SCH (TB) is +.>Is transmitted in K slots and thus the number of bits of UL-SCH (TB) transmitted in a single slot may not be +.>And may be a smaller value than it.

In this case, a method of determining P (i) as a scaling value of TBS is described with reference to equations 10 to 12.

-according to method 0, p (i) =1. That is, although the PUSCH in a single slot includes a portion of the UL-SCH (TB), it is considered as if the entire UL-SCH (TB) were to be transmitted. According to method 0, a size larger than the size of the UL-SCH (TB) actually transmitted in a single slot is considered, and thus a small number of modulation symbols may be used for UCI transmission. Therefore, this may affect the reliability of UCI.

According to method 1, the UE can scale the number of bits of the entire UL-SCH (TB) based on the value (K) that is the reference used when the UE determines the TBS. Here, K represents the number of slots for PUSCH transmission in the case of the repeated PUSCH transmission type a, and K represents the nominal number of repetitions for PUSCH transmission in the case of the repeated PUSCH transmission type B. The scaling value based on K may be determined as P (i) =1/K. Transmitting its UL-SCH (TB) number of bits in K slots And thus the number of UL-SCH (TB) bits transmitted in a single slot may be 1/k of the number of bits of the entire UL-SCH (TB) on average.

-according to method 1-1, as a parameter for use by a UE in determining TBSThe value (K') of the reference may be the number of the predetermined set of time slots. Here, the predetermined time slot set may include time slots where a collision occurs, and consecutive time slots of the corresponding time slots in the time domain. That is, slots in which PUCCH and PUSCH collide and K' consecutive slots corresponding to the slots in the time domain may be included. Here, K' consecutive slots in the time domain may include slots in which PUSCH transmission is valid. The scaling value based on K 'may be determined as P (i) =1/K'. The number of bits transmitting its UL-SCH (TB) in K' slots isAnd thus the number of bits of the UL-SCH (TB) transmitted in a single slot may be 1/K' of the number of bits of the entire UL-SCH (TB) on average.

According to method 2, the number of bits of the entire UL-SCH (TB) may be scaled based on PUCCH resources colliding with PUSCH in each slot. More specifically, the number of bits of the entire UL-SCH (TB) may be scaled based on the ratio of PUCCH resources colliding with PUSCH in each slot. The PUCCH resource colliding with the PUSCH may include the number of symbols of the time domain, the number of subcarriers of the frequency domain, or the number of REs. For example, referring to fig. 23, the number of symbols of PUCCH #1 colliding with PUSCH is n1=8, and the number of symbols of PUCCH #2 colliding with PUSCH is n2=5. In this case, the scaling values may be P (1) =n1/(n1+n2) and P (2) =n2/(n1+n2).

According to method 3, the number of bits of the entire UL-SCH (TB) may be scaled based on the PUCCH resources. More specifically, the number of bits of the entire UL-SCH (TB) may be scaled based on the ratio of PUCCH resources. The PUCCH resource may include a symbol number of a time domain, a subcarrier number of a frequency domain, or an RE number. For example, referring to fig. 23, in the case where the repeated PUSCH transmission type is not type B and the UE is based on the number of symbols per PUCCH, the number of symbols of PUCCH #1 is n1=8, and the number of symbols of PUCCH #2 colliding with PUSCH is n2=10. In this case, the scaling values may be P (1) =n1/(n1+n2) and P (2) =n2/(n1+n2).

According to method 4, the number of bits of the entire UL-SCH (TB) may be scaled based on PUSCH resources per slot. More specifically, the number of bits of the entire UL-SCH (TB) may be scaled based on the ratio of PUSCH resources. PUSCH resourceThe source may include a number of symbols in the time domain, a number of subcarriers in the frequency domain, or a number of REs. For example, referring to fig. 23, the number of symbols of PUSCH in slot #1 isThe number of symbols of PUSCH in slot #2 is +.>In this case, the scaling value may beAnd->That is, generally speaking, a->

According to method 5, the number of bits of the entire UL-SCH (TB) may be scaled based on PUSCH resources per slot excluding DM-RS symbols. More specifically, the number of bits of the entire UL-SCH (TB) may be scaled based on a ratio of PUSCH resources excluding DM-RS symbols. PUSCH resources other than DM-RS symbols may include the number of time domain symbols, the number of frequency domain subcarriers, or the number of REs. For example, the number of symbols of the PUSCH excluding the DM-RS symbol in the slot #1 is N1, and the number of symbols of the PUSCH excluding the DM-RS symbol in the slot #2 is N2. In this case, the scaling values may be P (1) =n1/(n1+n2) and P (2) =n2/(n1+n2).

According to method 6, the number of bits of the entire UL-SCH (TB) may be scaled based on PUSCH resources excluding the REs for PTRS and DM-RS symbols of each slot. More specifically, the number of bits of the entire UL-SCH (TB) may be scaled based on a ratio of PUSCH resources excluding RE and DM-RS symbols for PTRS. PUSCH resources other than RE and DM-RS symbols for PTRS may include the number of symbols in the time domain, the number of subcarriers in the frequency domain, or the number of REs. For example, the number of REs of PUSCH excluding the RE and DM-RS symbols for PTRS in slot #1 is N1, and the RE and DM-RS symbols for PTRS in slot #2 are excludedThe RE number of PUSCH is N2. In this case, the scaling values may be P (1) =n1/(n1+n2) and P (2) =n2/(n1+n2). For reference, the number of REs excluding REs for PTRS and PUSCH of DM-RS in slot #1 may be determined as

According to method 7, the scaling value may be a configuration value or an indication value.

< second embodiment: resource calculation of modulation symbols based on transmission of PUSCH >

According to the second embodiment, the UE may determine the number of modulation symbols used for UCI transmission based on the resources in which the entire PUSCH is transmitted. More specifically, the number of modulation symbols for UCI transmission in the ith slot may be obtained according to equations 13 to 15.

Equation 13 is an example of the number of modulation symbols of HARQ-ACK/NACK of UCI.

[ equation 13]

Equation 14 is an example of the number of modulation symbols of CSI part 1 of UCI.

[ equation 14]

Equation 15 is an example of the number of modulation symbols of the 2 nd portion of UCI.

[ equation 15]

That is, although equations 10 to 12 are based on the number of resources as the i-th slotDetermination of Q' _ACK (i)、Q' _CSI-1 (i) And Q' _CSI-2 (i) Equations 13 to 15 are based on +_as the number of resources in which the entire PUSCH is transmitted>To determine Q' _ACK (i) A. The invention relates to a method for producing a fibre-reinforced plastic composite Thus, no separate scaling of the TBS is required.

According to the (2-1) th embodiment, the UE may determine the number of modulation symbols used for UCI transmission based on PUSCH resources of a predetermined slot set. Here, the predetermined slot set may include slots of PUCCH and PUSCH collisions, and consecutive slots of the corresponding slots in the time domain. Here, the consecutive slots in the time domain may include slots in which PUSCH transmission is valid. Specifically, slots in which the PUCCH and PUSCH collide and consecutive slots in which PUSCH transmission is effective in the corresponding slots in the time domain may be included. More specifically, the number of modulation symbols for UCI transmission in the ith slot may be obtained according to equations 16 to 18.

Equation 16 is an example of the number of modulation symbols of HARQ-ACK/NACK of UCI.

[ equation 16]

Equation 17 is an example of the number of modulation symbols of CSI part 1 of UCI.

[ equation 17]

Equation 18 is an example of the number of modulation symbols of the 2 nd portion of UCI.

[ equation 18]

Although equations 13 to 15 are based on the assignmentTotal number of PUSCH resources for K symbol setsDetermination of Q' _ACK (i)、Q' _CSI-1 (i) And Q' _CSI-2 (i) Equations 16 to 18 may be based on +_n as the number of consecutive PUSCH resources including slots in which collision with PUCCH occurs>Determination of Q' _ACK (i)、Q' _CSI-1 (i) And Q' _CSI-2 (i) A. The invention relates to a method for producing a fibre-reinforced plastic composite Here, K' is the number of slots of a predetermined slot set including the i-th slot, i.e., the number of PUSCH slots consecutive in time domain including the i-th slot in collision with the PUCCH resource. i.e ₀ The index of the earliest slot in the time domain in the predetermined slot set including the i-th slot, i.e., the index of the foremost slot in the temporally consecutive PUSCH slots including the i-th slot that collides with the PUCCH resource.

In the above-described first and second embodiments, X in min { X, Y } for obtaining a modulation symbol has been described. Hereinafter, an embodiment associated with Y indicating the maximum number of modulation symbols to be used for UCI among PUSCH resources is described. Y described in the following embodiments can be used for Y of the first and second embodiments.

The base station configures or indicates α for the UE, so the maximum number of modulation symbols to be used for UCI in PUSCH resources may be adjustable. That is, the base station configures an appropriate value and can determine the maximum number of modulation symbols for transmitting UCI in PUSCH and the minimum number of modulation symbols for transmitting UL-SCH in PUSCH. In the above-described first and second embodiments, α has been applied to PUSCH resources in each slot.

For example, in order to determine the number of modulation symbols used for transmitting HARQ-ACK, the maximum number of modulation symbols (Y) to be used for UCI in PUSCH resources may be as shown in equation 19.

[ equation 19]

Here the number of the elements is the number,is the number of REs to which the modulation symbols of HARQ-ACK are to be allocated in PUSCH resources in slot i. Thus, as the value determined by equation 19, a predetermined ratio of REs to which modulation symbols of HARQ-ACK can be allocated among PUSCH resources in slot i may be used for modulation symbols of HARQ-ACK. However, in case a single TB is transmitted in multiple slots and enough resources can be used for UL-SCH in other slots, a sufficient number of REs can be used for UL-SCH, although all resources are modulation symbols for HARQ-ACK in one slot.

Subsequently, a method of determining a maximum number (Y) of modulation symbols to be used for UCI in PUSCH resources is described in this disclosure.

< third embodiment: calculating the number of modulation symbols in ascending order of time slot index >

According to the third embodiment, the maximum number (Y) of modulation symbols to be used for UCI in PUSCH resources may be determined in ascending order of slot index. That is, the number of modulation symbols of UCI may be determined in the time domain in the order in which the symbols precede.

Specifically, in case of N PUCCHs colliding with PUSCH, it is assumed that Q 'of each PUCCH' _ACK Is Q' _ACK (1)、Q' _ACK (2)、…、Q' _ACK (N)，Q' _CSI-1 Is Q' _CSI-1 (1)、Q' _CSI-1 (2)、…、Q' _CSI-1 (N) and Q' _CSI-2 Is Q' _CSI-2 (1)、Q' _CSI-2 (2)、…、Q' _CSI-2 (N). Here, the indexes are arranged in time order. A method for the UE to determine the maximum number (Y) of modulation symbols to be used for UCI in PUSCH resources is provided below. For reference, Y _ACK (i) Represents the maximum number of modulation symbols for HARQ-ACK in PUSCH resources in slot i, Y _CSI-1 (i) Represents the maximum number of modulation symbols for CSI part 1 in PUSCH resources in slot i, and Y _CSI-2 (i) Representing PUSCH resources in slot iThe maximum number of modulation symbols in the source for CSI part 2.

The maximum number of modulation symbols to be used for HARQ-ACK, CSI part 1 and CSI part 2 may be determined from the time earliest slot (slot index 1). In this case, the maximum number of modulation symbols may need to satisfy the following two conditions.

First condition: the maximum number (condition of available REs for PUSCH in each slot) is less than the condition of the number of REs available for UCI in REs for PUSCH in each slot. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less thanIn case of CSI part 1 in time slot i, the number of modulation symbols of CSI part 1 needs to be less than +.>In case of CSI part 2 in time slot i, the number of modulation symbols of CSI part 2 needs to be less than +.>

Second condition: (conditions of REs available for PUSCH in all slots including an α value) the number of REs available for UCI in REs of PUSCH in all slots is equal to the condition of α of the total number of REs. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less thanHere, # of UCI in the earlie slots is the number of RES for UCI up to the previous slot (slots 1, 2, i-1). In case of CSI part 1 in time slot i, the number of modulation symbols of CSI part 1 needs to be less than +.> The modulation symbol number may have a smaller value when compared to the modulation symbol number of HARQ-ACKs, which is the modulation symbol number of HARQ-ACKs in slot i. In case of CSI part 2 in time slot i, the number of modulation symbols of CSI part 2 needs to be smaller than The number of modulation symbols may have a smaller value when compared to the number of modulation symbols of CSI part 1, which is Q' _CSI-1 (i) As the number of modulation symbols of CSI part 1 in slot i.

The number of modulation symbols (Y) calculated according to the conditional order is as follows.

Equation 20 below is the number of modulation symbols in slot index 1.

[ equation 20]

Equation 21 below is the number of modulation symbols in slot index 2.

[ equation 21]

And is also provided with

Equation 22 below is the number of modulation symbols in slot index i.

[ equation 22]

And is also provided with

Here, Q' _tot (i)＝Q′ _ACK (i)+Q′ _CSI-1 (i)+Q′ _CSI-22 (i)

According to the (3-1) th embodiment, a method for the UE to determine the maximum number (Y) of modulation symbols to be used for UCI in PUSCH resources is provided below.

The number of modulation symbols used to transmit UCI may be determined in ascending order (i.e., chronological order) of slot indexes in a predetermined slot set. Here, the predetermined slot set may include a slot including a PUSCH colliding with the PUCCH and consecutive slots of corresponding slots in the time domain. Here, the consecutive slots in the time domain may include slots in which PUSCH transmission is valid. Can be derived from the time-earliest time slot (slot index i ₀ ) The determination of the maximum number of modulation symbols to be used for HARQ-ACK, CSI part 1 and CSI part 2 begins. In this case, the maximum number of modulation symbols may need to satisfy the following two conditions.

First condition: (condition of available REs for PUSCH per slot) the maximum number is less than the condition of the number of REs available for UCI in the REs for PUSCH per slot. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less thanIn case of CSI part 1 in time slot i, the number of modulation symbols of CSI part 1 needs to be less than +.>In case of CSI part 2 in time slot i, the number of modulation symbols of CSI part 2 needs to be less than +.>

Second condition: (condition of available REs of PUSCH in a predetermined slot set including an α value), a condition that the number of REs available for UCI in REs of PUSCH in the predetermined slot set is as many as α of the number of REs in the predetermined slot set. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less thanHere, # of UCI REs in the earliersslots is until the previous slot (slot i ₀ 、i ₀ +1, …, i-1) RE number for UCI. K' is the number of slots of a predetermined slot set including the ith slot, i.e., the number of PUSCH slots consecutive in the time domain including slots in collision with the PUCCH resource. i.e ₀ The index of the earliest slot in the time domain in the predetermined slot set including the ith slot, that is, the index of the forefront slot among consecutive PUSCH slots in the time domain including the slot in conflict with the PUCCH resource. In case of CSI part 1 in time slot i, the number of modulation symbols of CSI part 1 needs to be less than +. > The number of modulation symbols may have a smaller value, which is Q ', when compared to the number of modulation symbols of HARQ-ACKs' _AcK (i) I.e. the number of HARQ-ACK modulation symbols in slot i. In case of CSI part 2 in time slot i, the number of modulation symbols of CSI part 2 needs to be smaller thanThe number of modulation symbols may have a smaller value, which is Q ', when compared to the number of modulation symbols of CSI part 1' _CSI-1 (i) The number of CSI part 1 modulation symbols in instant i.

Equation 23 below is the slot index i ₀ Is used for modulating the number of symbols.

[ equation 23]

And is also provided with

Equation 24 below is the slot index i ₀ Number of modulation symbols in +1.

[ equation 24]

Equation 25 below is the number of modulation symbols in slot index i.

[ equation 25]

/>

And is also provided with

Here, Q' _tot (i)＝Q′ _ACK (i)+Q′ _CSI-1 (i)+Q′ _CSI-2 (i)

According to a third embodiment, the UE chronologically determines the number of modulation symbols to be used for UCI. However, in this case, the CSI 1 st part or the CSI 2 nd part in the earlier arriving slot may be preferably assigned with the number of modulation symbols, as compared to the HARQ-ACK in the later arriving slot. Accordingly, REs required to be allocated to relatively important HARQ-ACKs may be just insufficient. A method of addressing this shortcoming is disclosed.

< fourth embodiment: calculating the number of modulation symbols based on the type of UCI >

According to the fourth embodiment, the number of modulation symbols of each parameter of UCI to be multiplexed with PUSCH may be calculated according to the type of UCI.

Specifically, in the case where a TB is transmitted via a plurality of slots and the TBs exceeds a single slot, and in each slot, a symbol of a portion of the TB and a symbol of UCI of the PUCCH therein overlap, UCI and PUSCH of the PUCCH may be multiplexed and transmitted. In this case, the number of modulation symbols for each parameter of UCI may be determined based on the type of UCI. Here, the number of modulation symbols used for transmitting HARQ-ACK is calculated earlier than the number of modulation symbols used for transmitting CSI part 1 or CSI part 2. The number of modulation symbols used to transmit CSI part 1 is calculated earlier than the number of modulation symbols used to transmit CSI part 2. For a single UCI type, the number of modulation symbols used to transmit UCI may be determined in ascending order of the slot index (i.e., chronological order).

More specifically, in case of N PUCCHs colliding with PUSCH, Q 'of each PUCCH' _ACK Is Q' _ACK (1)、Q' _ACK (2)、…、Q' _ACK (N)，Q' _CSI-1 Is Q' _CSI-1 (1)、Q' _CSI-1 (2)、…、Q' _CSI-1 (N)，Q' _CSI-2 Is Q' _CSI-2 (1)、Q' _CSI-2 (2)、…、Q' _CSI-2 (N). Here, the indexes are arranged in time order. A method for the UE to determine the maximum number (Y) of modulation symbols to be used for UCI in PUSCH resources is provided below. For reference, Y _ACK (i) Represents the maximum number of modulation symbols for HARQ-ACK in PUSCH resources in slot i, Y _CSI-1 (i) Represents the maximum number of modulation symbols for CSI part 1 in PUSCH resources in slot i, Y _CSI-2 (i) Represents the maximum number of modulation symbols for CSI part 2 in PUSCH resources in slot i.

Depending on the type of UCI, the maximum number of modulation symbols to be used for HARQ-ACK, CSI part 1 and CSI part 2 may be determined. In this case, the maximum number of modulation symbols may need to satisfy the following two conditions.

First condition: (condition of available REs for PUSCH in each slot) the maximum number is less than the condition of the number of REs available for UCI in the REs for PUSCH in each slot. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less thanIn case of CSI part 1 in time slot i, the number of modulation symbols of CSI part 1 needs to be less than +.>In case of CSI part 2 in time slot i, the number of modulation symbols of CSI part 2 needs to be less than +.>

Second condition: (condition of available REs of PUSCH in all slots including an α value) the condition that the number of REs of UCI is equal to α of the number of REs of PUSCH in all slots may be used. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less than Here, # of HARQ ACK REs in the earlie slots is the number of modulation symbols for HARQ-ACKs up to the previous slot (slots 1, 2,..i-1). In case of CSI part1 in time slot i, the number of modulation symbols of CSI part1 needs to be smaller thanHere, # of HARQ ACK REs in the slots is the number of modulation symbols for HARQ-ACK transmission in all slots, and # of CSI part1 REs in the early slots is the number of modulation symbols for CSI part1 up to the previous slot (slots 1, 2, i.e., i-1). In case of CSI part2 in time slot i, the number of modulation symbols of CSI part2 needs to be smaller thanHere, # _ of_csi_part1_res_in_the_slots are the number of modulation symbols for CSI 2 part transmission in all slots, and # of_csi_part2_res_in_the_earlie_slots are the number of modulation symbols for CSI 2 part up to the previous slot (slots 1, 2.

The number of modulation symbols (Y) of each parameter of UCI calculated according to the conditional order is as follows.

Equation 26 below shows the number of modulation symbols of HARQ-ACK based on UCI index.

[ equation 26]

Equation 27 below shows the number of modulation symbols of CSI 1 st part based on UCI index.

[ equation 27]

And->

Equation 28 below shows the number of modulation symbols of CSI 2 nd part based on UCI index.

[ equation 28]

And is also provided with

Equations 26 to 28, Q' _ACK-tot Q′ _ACK (1)+Q′ _ACK (2)+…Q′ _ACK (N) and Q' _CSI-1-tot ＝Q′ _CSI-1 (1)+Q′ _CSI-1 (2)+…+Q′ _CSI-1 (N).

According to the (4-1) th embodiment, the UE may determine the number of modulation symbols used to transmit UCI depending on the type of UCI.

For a single UCI type, the number of modulation symbols used to transmit UCI may be determined in ascending order (i.e., chronological order) of slot indexes in a predetermined slot set. Here, the predetermined slot set may include a slot including a PUSCH colliding with the PUCCH and consecutive slots of corresponding slots in the time domain. Further, consecutive slots in the time domain may include slots in which PUSCH transmissions are valid. Depending on the type of UCI, the UE may determine the maximum number of modulation symbols to be used for HARQ-ACK, CSI part 1 and CSI part 2. In this case, the maximum number of modulation symbols may need to satisfy the following two conditions.

First condition: (condition of available REs for PUSCH in each slot) the maximum number is less than the condition of the number of REs available for UCI in the REs for PUSCH in each slot. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less than In case of CSI part1 in time slot i, the number of modulation symbols of CSI part1 needs to be less than +.>In case of CSI part 2 in time slot i, the number of modulation symbols of CSI part 2 needs to be less than +.>

Second condition: (condition of available REs of PUSCH in a predetermined slot set including a value) the number of REs available for UCI in REs of PUSCH in the predetermined slot set is a condition as many as α of the number of REs in the predetermined slot set. For example, in the case of HARQ-ACK in slot i, the number of modulation symbols for HARQ-ACK needs to be less thanHere, # -of HARQ ACK REs in the earlier slots is until the previous slot (slot i ₀ 、i ₀ +1..i-1) modulation symbol number for HARQ-ACK. K' is the number of slots of a predetermined slot set including the ith slot, i.e., the number of consecutive PUSCH slots in the time domain including slots in conflict with the PUCCH resource. i.e ₀ An index indicating the earliest slot among predetermined slots including the ith slot in the time domain, i.e., an index of the foremost slot among consecutive PUSCH slots in the time domain including a slot in collision with the PUCCH resource. In case of CSI part1 in time slot i, the number of modulation symbols of CSI part1 needs to be smaller thanHere, # of HARQ ACK REs in the slots is the number of modulation symbols for HARQ-ACK transmission in all slots in the predetermined set of slots, # of CSI part1 REs in the early slots is for CSI part1 up to the previous slot (slot i ₀ ，i ₀ +1..the number of modulation symbols of i-1). In case of CSI part2 in time slot i, the number of modulation symbols of CSI part2 needs to be less than +.> Here, # of csi_part1 RES in the slots is the number of modulation symbols for CSI 2 nd partial transmission in all slots in the predetermined set of slots, and # of csi_part2 RES in the slots is until the previous slot (slot i ₀ ，i ₀ +1..i-1) modulation symbol number for CSI part 2.

Equation 29 below shows the number of modulation symbols of HARQ-ACK based on UCI index.

[ equation 29]

/>

Equation 30 below shows the number of modulation symbols of CSI 1 st part based on UCI index.

[ equation 30]

And is also provided with

Equation 31 below shows the number of modulation symbols of CSI 2 nd part based on UCI index.

[ equation 31]

And is also provided with

In the equations 29 to 31,

Q′ _ACK-tot ＝Q′ _ACK (1)+Q′ _ACK (2)+…Q′ _ACK (N) and

Q′ _CSI-1-tot ＝Q′ _CSI-1 (1)+Q′ _CSI-1 (2)+…+Q′ _CSI-1 (N)

Referring to fig. 24, in case that the TBS is greater than a single slot, the UE may determine a transmission power of PUSCH in each slot of the transmission TB based on the scaled TBS.

First, according to 7.1.1 of TS38.213, the transmission power of PUSCH can be determined as follows.

In case that the UE transmits PUSCH in the active UL BWP "b" of the carrier "f" of the serving cell "c" by using the parameter set configuration with index "j" and the PUSCH power control adjustment state with index "l", the UE may calculate PUSCH transmission power P in PUSCH transmission occasion "i" according to equation 32 provided below _{PUSCH，b，f，c} (i，j，q _d ，l)。

[ equation 32]

Here, the problem the present disclosure is intended to overcome is with respect to determining Δ _{TF，b，f，c} (i) Is a method of (2). Delta can be calculated according to equation 33 below _{TF，b，f，c} (i)。

[ equation 33]

In equation 33, i is a transmission occasion index of PUSCH and may be determined according to 7 of TS38.213, as follows.

The PUSCH/PUCCH/SRS/PRACH transmission point 'i' may be indexed by slot in a frame with a system frame number of SFNThe first symbol 'S' in a slot and the number 'L' of consecutive symbols. In the case of PUSCH transmission with repetition type B, the PUSCH transmission occasion is a nominal repetition.

That is, in the case of the repeated PUSCH transmission type a, the transmission occasion is a slot. In the case of repeated PUSCH transmission type B, the transmission occasion is a nominal repetition.

In equation 33, K _s May be configured to be one of 1.25 or 0. In the case where the PUSCH includes the UL-SCH,the BPRE may be calculated according to equation 34 below.

[ equation 34]

In equation 34, C represents the number of code blocks of PUSCH transmission, K _r The size (number of bits) of the code block r is indicated. N (N) _RE Is the number of REs occupied by PUSCH, and can be obtained according to the following equation 35.

[ equation 35]

In equation 35Is the number of symbols occupied by PUSCH corresponding to the ith transmission occasion of activated UL BWP b for carrier f of cell c. />The number of subcarriers in symbol j that does not include DMRS or Phase Tracking Reference Signal (PTRS) is represented. />The number of PRBs occupied for PUSCH corresponding to the i-th transmission occasion of activated UL BWP b of carrier f of cell c.

In equation 34, BPRE and N _RE Is determined based on the ith transmission opportunity, butIs determined based on a single TB. Here, the TBS may be determined based on a plurality of transmission opportunities (or a plurality of symbol sets). In this example, the calculation of BPREs may be problematic in cases where the same code block is transmitted in multiple transmission occasions. That is, at a predetermined transmission opportunity, although a part of the code block is included, the entire code block size may be +_ based on the above equation >To calculate BPRE.

In this example, for calculating the transmission power P _{PUSCH，b，f，c} (i，j，q _d BPRE and N of Z) _RE May be determined based on the ith transmission occasion, andis determined based on a single TB. Here, the TBS may be determined based on a plurality of transmission opportunities (or a plurality of symbol sets). In this case, in the case where the same code block is transmitted in a plurality of transmission opportunities, the calculation of the BPRE may be problematic.

That is, at a predetermined transmission opportunity, although a portion of the code block is included, it is possible to base the entire code block size according to the above equationTo calculate BPRE.

For example, as shown in fig. 24, according to the retransmission type a, the UE may receive an indication indicating PUSCH transmission for two slots (i.e., slot n and slot n+1) whose TBS is determined based on a single code block # 0. Here, the first symbol set to which PUSCH transmission is allocated in the slot n is a first transmission occasion, and the second symbol set to which PUSCH transmission is allocated in the slot n+1 is a second transmission occasion. In this case, the transmission power or BPRE may be determined for each transmission occasion.

However, as shown in fig. 24, although half of the code block #0 is included in each of the first transmission opportunity (first symbol set) and the second transmission opportunity (second symbol set), the actually calculated BPRE may be determined based on the overall size of the code block # 0. That is, the entire code block size (K ₀ Since only the code block #0 is transmitted in fig. 24) can be applied to each transmission occasion, e.g., bpre=k in the first transmission occasion (first symbol set) ₀ /N _RE And bpre=k in the second transmission opportunity (second symbol set) ₀ /N _RE 。K ₀ Is the code block size for the two transmission occasions, so the equation may have difficulty in determining the transmission power from the exact code block size. Thus, in the case of transmitting a single code block over multiple transmission occasionsIn this case, a method of calculating BPREs for each transmission power is required.

< first embodiment: BPRE > for calculating transmission power by scaling TBS to TBS per transmission occasion

According to the first embodiment, the BPRE for each transmission occasion can be obtained by scaling the code block size to the code block size for each transmission occasion. UE may be scaled byOr->To calculate BPRE (i) in transmission occasion i.

That is to say that the first and second,here, N _RE (i) Is the number of PUSCH REs excluding PTRS and DMRS for transmission occasion i, and P (i) is the scaled value for transmission occasion i. That is, in the case where a TB is transmitted via a plurality of slots and the TBs is greater than a single slot, a portion of the TB may be transmitted in a single slot. In this case, the transmission power for PUSCH transmission in a single slot needs to be determined for each slot, and thus the transmission power for PUSCH transmission may be determined based on slot units. In this case, since the TBS is larger than a single slot, and thus it is necessary to scale the value of the TBS based on the single slot to determine the transmission power of the PUSCH. Thus, in case that the size of the TBS is greater than or equal to a single slot, the TBS may be adjusted by increasing or decreasing scaling of the TBS under the assumption that a single TB is transmitted in a single slot, and PUSCH transmission power for each slot may be determined based on the adjusted TBS.

In this case, the scaling value P (i) for scaling may be determined by the following method.

First, P (i) =1. That is, although the PUSCH in a single slot includes a portion of the TB, it is considered as if the entire TB were to be transmitted in the corresponding slot. According to the first method, the size of the code block is considered to have a larger size than the size of the code block actually transmitted in a single transmission occasion, and thus the BPRE can be determined to be a larger value. Thus, a larger transmission power can be determined for transmission occasion i.

Second, P (i) may be determined based on the number of transmission occasions to transmit a single TB. Specifically, in the case where the same code block occupies M transmission occasions for PUSCH transmission, P (i) =1/M. That is, it is possible to obtain a code block size corresponding to the transmission timing i asThereby->

For example, as shown in fig. 24, the UE may receive an indication indicating PUSCH transmission, whose TBS is determined based on a single code block #0 for two slots (i.e., slot n and slot n+1). Here, the first symbol set to which PUSCH transmission is allocated in the slot n is a first transmission occasion, and the second symbol set to which PUSCH transmission is allocated in the slot n+1 is a second transmission occasion. In this case, half of the code block #0 may be included in each of the first transmission opportunity (first symbol set) and the second transmission opportunity (second symbol set). According to the second method, P (1) =p (2) =1/2, so that the code block size of the first transmission opportunity or the second transmission opportunity can be obtained as K ₀ /2. So that the number of the parts to be processed,

Referring to fig. 25, third, P (i) may be determined based on the number of symbols of PUSCH, unlike the first and second methods described above.

In particular, it can be obtained in the transmission occasion iHere, a->Represents the number of PUSCH symbols capable of transmitting the r-th code block in the i-th transmission occasion of the activated UL BWP b of the carrier f of the cell c, andrepresenting the total number of PUSCH symbols capable of transmitting the r-th code block. Thus, +.>

For example, as shown in fig. 25, the UE may receive an indication indicating PUSCH transmission, whose TBS is determined based on a single code block #0 for two slots (i.e., slot n and slot n+1). Here, the first symbol set to which PUSCH transmission is allocated in the slot n is a first transmission occasion, and the second symbol set to which PUSCH transmission is allocated in the slot n+1 is a second transmission occasion. In this case, half of the code block #0 may be included in each of the first transmission opportunity (first symbol set) and the second transmission opportunity (second symbol set).

In this case, according to a third method,the size of the code block of the first transmission occasion or the second transmission occasion can be obtained as K ₀ /2. So that the number of the parts to be processed,

Referring to fig. 26, fourth, unlike the first to third methods described above, P (i) may be determined based on the number of PUSCH REs at which transmission opportunities of a single TB are transmitted.

In particularIn the transmission occasion i may beHere, a->Represents the number of PUSCH REs capable of transmitting the r-th code block at transmission occasion i, and +.>Representing the total number of PUSCH REs capable of transmitting the r-th code block. Thus, +.> For example, as shown in fig. 26, the UE may receive an indication indicating PUSCH transmission, whose TBS is determined based on a single code block #0 for two slots (i.e., slot n and slot n+1).

Here, the first symbol set to which PUSCH transmission is allocated in the slot n is a first transmission occasion, and the second symbol set to which PUSCH transmission is allocated in the slot n+1 is a second transmission occasion. In this case, half of the code block #0 may be included in each of the first transmission opportunity (first symbol set) and the second transmission opportunity (second symbol set).

According to a fourth method of the present invention,and thus the size of the code block of the first transmission occasion or the second transmission occasion can be obtained as K ₀ /2. Therefore (S)>

Fifth, the scaling value may be a value configured or indicated by the base station.

< example two: BPRE > for calculating transmission power from code blocks included in transmission opportunity

According to the second embodiment, the BPRE of transmission occasion i may be determined based on the code blocks included in the transmission occasion. That is, the code block index included at transmission timing i is { r } _j And the number of code blocks is C _i In the case of (a) can beHere, N _RE (i) The number of PUSCH REs excluding PTRS and DMRS in transmission occasion i is indicated. The code blocks and the number of code blocks included in the transmission opportunity i may be determined based on the following method.

As a first method, in the case where at least a part of the code blocks is included in the transmission opportunity i, it is determined that the corresponding code blocks are included in the transmission opportunity.

As a second method, it is determined that the corresponding code block is included in the corresponding transmission opportunity only in the case where the entire single code block is included in the transmission opportunity i.

According to the (2-1) th embodiment, the BPRE of the transmission occasion i can be determined based on the number of PUSCH symbols and the code blocks included in the transmission occasion. That is, the code block index included at transmission timing i is { r } _j And the number of code blocks is C _i Can be obtained as

Here the number of the elements is the number, Represents the number of PUSCH symbols capable of transmitting a code block in the ith transmission occasion of activated UL BWP b of carrier f of cell c, and +.>Representing PUSCH symbols capable of transmitting code blocksTotal number.

According to the (2-2) th embodiment, the BPREs of the transmission occasion i may be determined based on the number of PUSCH REs and the code blocks included in the transmission occasion. That is, the code block index included at transmission timing i is { r } _j And the number of code blocks is C _i Can be obtained as Here, a->Represents the number of PUSCH REs capable of transmitting a code block at transmission occasion i, and +.>Representing the total number of PUSCH REs capable of transmitting a code block.

In the first and second embodiments, the transmission occasion may be determined based on Time Domain Resource Allocation (TDRA) information associated with time domain resources of the scheduled PUSCH. For example, in the case where the repetition PUSCH transmission type a is indicated, the transmission occasion is a slot indicating PUSCH transmission. In the case where the repetition PUSCH transmission type B is indicated, the transmission occasion is determined based on the time slot or nominal repetition where PUSCH transmission is indicated.

Alternatively, the transmission opportunity may be determined independently of TDRA information associated with the time domain resource in which PUSCH is scheduled. For example, although the repeated PUSCH transmission type B is indicated, the transmission occasion may be determined based on the slot indicating PUSCH transmission.

In the first and second embodiments, a single transmission opportunity may be determined based on a plurality of time slots or nominal repetitions.

< method of determining redundancy version for repeated transmission of PUSCH for TB >

The UE may transmit PUSCH using one of the methods configured by the base station for the UE, for example: a scheduling method based on Dynamic Grant (DG) that schedules transmission of PUSCH by receiving control information (DCI) transmitted by PDCCH; or a scheduling method based on Configuration Grant (CG) for transmitting PUSCH according to resources and transmission methods pre-configured by the base station.

That is, the UE may determine the TBS by using a resource scheduled for PUSCH transmission via dynamic grant or a plurality of symbol sets corresponding to a resource configured via configuration grant, and may transmit PUSCH. In other words, the UE may determine a TBS for PUSCH configured by the base station to use a DG or CG based transmission scheme based on the multiple symbol sets.

When determining a plurality of symbol sets for uplink transmission according to a DG or CG based transmission scheme, the UE may perform the determination based on time domain resources in which uplink transmission is effective. Here, the time domain resource for which uplink transmission is effective may be a time domain resource including flexible symbols or uplink symbols configured according to a cell-specific UL/DL configuration or a UE-specific UL/DL configuration configured for the UE by the base station. For example, in the case where a plurality of symbol sets for PUSCH transmission resources are determined according to the repeated PUSCH transmission type a, assuming that the repeated PUSCH transmission type a is transmission repeated on a slot unit basis, the symbol sets may be slots, and the UE may determine time domain resources for PUSCH transmission based on slots in which uplink transmission according to the repeated PUSCH transmission type a is valid.

The UE may receive an indication from the base station indicating a repeated transmission of PUSCH in a plurality of time domain resources, the TBS of the PUSCH being determined based on a plurality of symbol sets for uplink coverage extension.

Hereinafter, for convenience of description, it is assumed that the number of symbol sets (the number of slots or the nominal number of repetitions) corresponding to one PUSCH transmission between a single PUSCH transmission (whose TBS is determined based on a plurality of symbol sets) or one or more repeated PUSCH transmissions is N, and the number of repeated PUSCH transmissions whose TBS is determined based on the N symbol sets is M.

In case of scheduling PUSCH according to DG or CG-based transmission scheme of type 2 for UE, the UE may receive DCI format 0_1 or 0_2 via PDCCH scheduling PUSCH and may perform repeated transmission of PUSCH whose TBS is determined based on a plurality of symbol sets among a plurality of time domain resources corresponding to M resources. Here, the plurality of time domain resources may correspond to the number of the plurality of symbol sets. For example, in the case of repeating PUSCH transmission type a, the multiple symbol sets may be multiple slots. Thus, the plurality of time domain resources may correspond to a number of time slots. For the UE, M may be configured by a higher layer or may be received by being included in a TDRA field of DCI. In M slots, the UE may perform repeated transmission of PUSCH whose TBS is determined based on a plurality of symbol sets.

In case of scheduling PUSCH according to the CG-based transmission scheme of type 1 for the UE, the UE may perform repeated transmission of PUSCH whose TBS is determined based on a plurality of symbol sets in M time domain resources according to a pre-configured resource and transmission method. Here, the plurality of time domain resources may correspond to the number of the plurality of symbol sets. For UEs, M may be configured by higher layers. In M slots, the UE may perform repeated transmission of PUSCH whose TBS is determined based on a plurality of symbol sets.

In the case where CG-based PUSCH transmission performed in a single slot is repeated in an NR system, the UE and the base station may define a point of time at which the CG-based PUSCH transmission assumed to be the UE starts as follows. The UE is configured with one of RV sequences {0,2,3,1}, {0,3,0,3}, or {0, 0} applied TO CG-based repeated PUSCH transmissions, and may use an RV value corresponding TO the { mod (n-1, 4) +1} th value in the nth initial Transmission Occasion (TO). Here, n is an integer greater than 0. In this case, the UE may determine an initial TO from which repeated transmissions may start according TO the configured RV sequence as follows.

In case the RV sequence is configured as {0,2,3,1}, the UE may start repeating transmissions from the first TO corresponding TO rv=0 as an initial TO, and the base station attempts TO receive the CG-based repeated PUSCH transmission by assuming that repeated transmissions by the UE may start.

In case the RV sequence is configured as {0,3,0,3}, the UE may start repeated transmission from the TO corresponding TO rv=0 as initial TO, and the base station attempts TO receive the CG-based repeated PUSCH transmission by assuming that repeated transmission by the UE may start.

In case the RV sequence is configured as {0, 0}, the UE may start the repeated transmission by determining all TOs corresponding TO rv=0 (excluding the last TO) as initial TOs, and the base station may attempt TO receive the CG-based repeated PUSCH transmission by assuming that the repeated transmission by the UE may start.

In the case where CG-based repeated PUSCH transmission performed in a single slot is applied TO PUSCH whose TBS is determined based on a plurality of symbol sets in accordance with a CG-based transmission scheme, in the case where a slot configured as an initial TO based on rv=0 is not determined as a valid slot (i.e., in the case where the slot is determined as an invalid slot for repeated PUSCH transmission), or in the case where repeated PUSCH transmission is scheduled or configured, the TBS of PUSCH is determined based on a plurality of symbol sets from a slot different from the slot corresponding TO rv=0, there may be a problem in that repeated transmission of PUSCH whose TBS is determined based on all the plurality of symbol sets cannot be performed.

Thus, in the case where the UE repeatedly transmits PUSCH whose TBS is determined based on a plurality of symbol sets according TO the CG-based transmission scheme, the present disclosure will provide a scheme of determining an initial Transmission Occasion (TO) in which repeated transmission may be started.

First, a description is provided of a method of determining M TOs in which repeated transmission is effective in the case where an indication is received for indicating that PUSCH whose TBS is determined based on N symbol sets needs TO be repeated for M times according TO a CG-based transmission scheme.

The base station may configure the UE with a period and an offset of a first slot of a first TO in which PUSCH is repeatedly transmitted. Based on the period and the offset, the UE may determine a first slot of a first TO in which TO repeatedly transmit PUSCH. Here, the period and the offset may be given in ms or in units of one or more slots. The subsequent process may be determined according to the following method.

Referring TO fig. 27, first, TO may be determined based on N slots in which PUSCH transmission is valid. That is, when determining the TBS based on the plurality of symbol sets N, the UE may determine TO based on the N symbol set units. Thus, a total of M TO can be determined.

Specifically, referring to fig. 27A, the UE is configured with a repeated PUSCH transmission type a, n=2, m=4 of the CG-based transmission scheme. In fig. 27A, a slot D is a slot configured with a downlink symbol, a slot U is a slot configured with an uplink symbol, and a slot S is a slot configured with a downlink symbol, a flexible symbol, and an uplink symbol. The UE may assume that PUSCH transmissions are valid in slot S and slot U. According TO a first method, the UE may sequentially determine TO for slots corresponding TO n=2 starting from a first slot S in which PUSCH transmission is valid. Here, the time slots corresponding TO n=2, which are determined as TO, may be continuous or discontinuous in the time domain. According TO the first method, the repeated transmission of a single PUSCH is determined as a single TO, and thus there is no ambiguity between the UE and the base station as TO whether the PUSCH transmitted in a plurality of slots is the repeated transmission of a single PUSCH or the repeated transmission of a different PUSCH.

Second, TO may be determined based on the time slot in which PUSCH transmission is valid. Although the UE determines the TBS based on a plurality of symbol sets N, the TO may be determined based on a slot unit. Thus, n×m TO can be determined in total. For example, as shown in fig. 27B, the UE is configured with a repeated PUSCH transmission type a, n=2, m=4 of the CG-based transmission scheme. The UE may sequentially determine TO for the slots corresponding TO n=2 starting from the first slot in which PUSCH transmission is valid. The UE may determine TO sequentially for each slot starting from the first slot S in which PUSCH transmission is valid. According TO the second method, a single slot is determined as a single TO, so that the attribute of NR of the TO determined based on the slot unit is maintained and backward compatibility can be maintained, which is advantageous.

Subsequently, a description is provided of a method of determining an initial TO in which repeated PUSCH transmission for a CG-based transmission scheme may begin. According TO the method of determining M TOs in which the PUSCH transmission is repeated TO be effective, this can be determined as follows.

In case that the TO is determined according TO the first method, the UE may receive a configuration of one of RV sequences {0,2,3,1}, {0,3,0,3} or {0, 0} applied TO CG-based repeated PUSCH transmission, and may use an RV value corresponding TO { mod (n-1, 4) +1} value in the nth TO. Here, n is an integer greater than 0. In this case, the UE may determine an initial TO in which repeated transmission may be started according TO the configured RV sequence as follows.

In case the RV sequence is configured as {0,2,3,1}, the first TO of the M TO can be determined as the initial TO. The TO may be a TO corresponding TO rv=0.

In case the RV sequence is configured as {0,3,0,3}, a TO of the M TO corresponding TO rv=0 may be determined as an initial TO.

In case the RV sequence is configured as {0, 0}, all of the M TOs can be determined as initial TOs. In this case, in the case where (the number N of symbol sets) is greater than or equal TO 8 (the number M of configured repeated transmissions), repeated transmissions may not start in the last symbol set of the last TO.

In case of determining TO according TO the second method, the UE may receive a configuration of one of RV sequences {0,2,3,1}, {0,3,0,3} or {0, 0} applied TO CG-based repeated PUSCH transmission, and may use an RV value corresponding TO { mod (N/N) -1, 4) +1} value in the nth TO. Here, n is an integer greater than 0, and ceil (x) represents the smallest integer among integers greater than or equal to x. In this case, the UE may determine an initial TO in which repeated transmission may be started according TO the configured RV sequence as follows.

In case the RV sequence is configured as {0,2,3,1}, the first N of the N x M TOs may be determined as initial TO. Here, the first N TO may be TO corresponding TO rv=0.

In case the RV sequence is configured as {0,3,0,3}, the TO of the n×m TO corresponding TO rv=0 may be determined as the initial TO.

In case the RV sequence is configured as {0, 0}, all of the n×m TOs can be determined as initial TOs. In this case, in the case where (the number N of the plurality of symbol sets) (the number M of configured repeated transmissions) is greater than or equal TO 8, repeated transmissions may not be started at the last TO.

Referring to fig. 28, in case that a TB is transmitted via a plurality of slots and a PUSCH transmitting the TB is repeatedly transmitted, the UE may transmit the first TB in a slot allocated by '0' of an RV sequence configured by the base station.

In particular, the UE may be configured or instructed such that the UE repeatedly transmits PUSCH whose TBS is determined based on a plurality of symbol sets in a plurality of time domain resources according to a CG-based transmission scheme. For example, in case that the repeated PUSCH transmission type a is scheduled, the UE may repeat M times transmission of PUSCH whose TBS is determined based on N slots. In this case, the UE may determine an RV value for M repeated transmissions according to the configured RV sequence.

For example, as shown in fig. 28, the UE is configured with a repeated PUSCH transmission type a, n=2, m=4 of the CG-based transmission scheme, and the base station may configure an RV sequence of {0,2,3,1 }. In this case, PUSCH transmission may be inactive in the TO corresponding TO the two slots of the first retransmission. That is, the first two TOs corresponding TO rv=0 may be invalid. Although PUSCH transmission is effective in TO corresponding TO the second, third, and fourth repeated transmission, rv=0, which is a condition of the initial TO, is not satisfied, and thus repeated transmission may not be started. In this case, PUSCH transmission becomes effective again after 6 slots in which PUSCH transmission is effective, and thus delay may increase, which is a disadvantage.

Referring TO fig. 29, in the case where a TB is transmitted via a plurality of slots and PUSCH in which the TB is transmitted is repeatedly transmitted, the UE may start the repeated transmission of PUSCH of the TB in the corresponding TO even though the TO does not correspond TO the RV value of "0".

In particular, the plurality of symbol sets may be configured by a grant scheme in which the base station configures the plurality of symbol sets for the UE. The UE may determine a TBS based on the allocated or configured plurality of symbol sets and may perform repeated transmission in a plurality of time domain resources via PUSCH based on the determined TBS. In this case, the UE may perform repeated transmission of PUSCH based on RV values configured for each slot according to RV sequences configured by the base station.

In this case, in a case where a slot in which an RV value for starting repetition of PUSCH transmission is configured as "0" is invalid, the UE may start repetition of PUSCH transmission in a slot in which an RV value different from "0" is configured. That is, the UE may start the repeated transmission of PUSCH even in a slot in which the RV value is not configured to "0".

That is, in the case where the UE is configured or instructed such that the UE repeatedly transmits PUSCH whose TBS is determined based on a plurality of symbol sets in a plurality of time domain resources, the UE may perform configuration so as to perform repeated PUSCH transmission regardless of the RV value. In other words, the UE may start repeating PUSCH transmission in a TO having an RV value different from rv=0. The different RV values may include rv=1, rv=2, and rv=3.

For example, as shown in fig. 29, the UE is configured with a repeated PUSCH transmission type a, n=2, m=4 of the CG-based transmission scheme. In addition, the base station is configured with an RV sequence of {0,2,3,1 }. In the case where the TO corresponding TO the two slots of the first retransmission is not effective for PUSCH transmission, configuration may be performed such that retransmission starts even when the TO corresponding TO the remaining retransmission has an RV value different from rv=0. That is, the configuration may be performed such that the repetition PUSCH transmission starts in the TO of two slots corresponding TO the second repetition transmission having the value of rv=2, in the TO of two slots corresponding TO the third repetition transmission having the value of rv=3, and in the TO of two slots corresponding TO the fourth repetition transmission having the value of rv=1. That is, unlike the case where the UE and the base station configure rv=0 for the UE as a point of time assuming that CG-based PUSCH transmission is repeated in a single slot in the NR system, in the case where the UE is configured or instructed such that the UE repeatedly transmits CG-based PUSCH in a plurality of time domain resources (whose TBS is determined based on a plurality of symbol sets), the UE may perform configuration to start repeating PUSCH transmission regardless of RV values.

However, in the case where the repeated transmission starts in TO having a value different from rv=0 according TO the method described in fig. 29, information bits (systematic bits) of the encoded bits may not be included in PUSCH transmission or may include only a part thereof, whereby performance of PUSCH may be deteriorated. Hereinafter, embodiments are described which overcome the above-described drawbacks.

Referring TO fig. 30, in case that a TB is transmitted via a plurality of slots and a PUSCH transmitting the TB is repeatedly transmitted, the UE may receive a configuration of only the configured RV sequence from the base station and may start the repeated transmission of the PUSCH of the TB in a TO corresponding TO an RV value of "0".

Specifically, the plurality of symbol sets may be configured by the base station configuring a grant scheme of the plurality of symbol sets for the UE. The UE may determine a TBS based on the allocated or configured plurality of symbol sets and may perform repeated transmission in a plurality of time domain resources via PUSCH based on the determined TBS. In this case, the UE may perform repeated transmission of PUSCH based on RV values configured for each slot according to RV sequences configured by the base station.

In this case, in the case where a slot in which an RV value of "0" for starting repetition of PUSCH transmission is configured is invalid, the UE may not be able to start repetition of PUSCH transmission in a slot in which an RV value different from "0" is configured. In this case, the size of the TB is greater than or equal to a single slot, and thus repeated transmission of PUSCH to transmit the TB can be started after a large number of slots pass. Thus, a latency may occur to start repeated PUSCH transmissions.

Accordingly, in this case, in the case where it is determined that the TBs as the TB size is greater than a single slot, the base station may configure a predetermined sequence including only a predetermined RV value as an RV sequence for repeatedly transmitting the PUSCH for transmitting the TB. In this case, the predetermined RV value may be an RV value for starting repetition of PUSCH transmission.

For example, the base station may configure {0, 0} for the UE as an RV sequence for repeated PUSCH transmissions. Since all RV values in all slots are "0", the UE may immediately start repeating PUSCH transmission in the next active slot, although the first slot for PUSCH transmission is not active. In this case, the last TO may not be used for repeated PUSCH transmissions.

Specifically, in the case where the UE is configured or instructed such that the UE repeatedly transmits the CG-based PUSCH whose TBS is determined based on a plurality of symbol sets in a plurality of time domain resources, the RV sequence may always be configured to {0, 0} for the UE as the RV sequence for the repeated transmission of the PUSCH whose TBS is determined based on a plurality of symbol sets. This scheme uses the same method as in the case where the CG-based PUSCH transmission performed in a single slot is repeated in the NR system, where the UE and the base station configure rv=0 for the UE as a point of time assumed to be the start point of the CG-based PUSCH transmission, and allows for limitation of scheduling of the base station in association with the configuration of the RV sequence. That is, in the case of CG-based PUSCH transmission performed in a single slot and in the case of CG-based PUSCH whose TBS is determined based on a plurality of symbol sets being repeatedly transmitted in a plurality of time domain resources, the UE may equally start repeating PUSCH transmission in TO corresponding TO rv=0, and thus, RV sequence may be always configured TO {0, 0} and may start repeating transmission in all TO. For example, referring to fig. 30, the UE is configured with a repeated PUSCH transmission type a, n=2, m=4 of the CG-based transmission scheme. In this case, although the TO corresponding TO the two slots of the first retransmission is invalid for PUSCH transmission, the UE may start TO repeat PUSCH transmission because the TO corresponding TO the two slots of the remaining retransmission has a value of rv=0. Further, for the UE, the RV sequence is configured TO {0, 0}, n×m=8, so the UE may not start the retransmission in the second slot (slot U) corresponding TO the TO of the fourth retransmission according TO the method of determining TO described with reference TO fig. 28 and 29.

Referring TO fig. 31, in case that a TB is transmitted via a plurality of slots and a PUSCH TO which the TB is transmitted is repeatedly transmitted, the UE may map a value of an RV sequence from TO in which repeated PUSCH transmission can be started TO.

In this case, in the case where a slot in which an RV value of "0" for starting the repetition PUSCH transmission is configured is invalid, the UE may not be able to start the repetition PUSCH transmission in a slot in which an RV value different from "0" is configured. In this case, the size of the TB is greater than or equal to a single slot, and thus repeated transmission of PUSCH for transmitting the TB may be started after a large number of slots have elapsed. Thus, a latency may occur to start repeated PUSCH transmissions.

Thus, in this case, the UE may reconfigure the RV value of the RV sequence from the TO of the slot where repeated PUSCH transmissions can begin after an inactive TO.

Specifically, in the case where the UE is configured or instructed such that the UE repeatedly transmits PUSCH based on CG whose TBS is determined based on a plurality of symbol sets in a plurality of time domain resources, the UE may map a new RV value from TO in which repeated PUSCH transmission can be started. Specifically, in the case where a TO having rv=0 and corresponding TO the first repeated transmission is not valid, rv=0 is determined for the TO corresponding TO the next repeated transmission, and the CG-based PUSCH whose TBS is determined based on a plurality of symbol sets may be repeated transmitted in a plurality of time domain resources.

Referring TO fig. 31A, a TO reconfiguration from which repeated PUSCH transmission can be started and an RV sequence of {0, 0} can be applied. In the case where the TO having rv=0 and corresponding TO the first retransmission is invalid, the UE may reconfigure and apply the RV sequence of {0, 0} from the retransmission of the next valid TO regardless of the RV sequence configured by the base station, thereby performing the repeated PUSCH transmission. For example, referring to fig. 31A, the UE is configured with a repeated PUSCH transmission type a, n=2, and m=4 of the CG-based transmission scheme. In addition, the base station is configured with an RV sequence of {0,2,3,1 }. The TO of the two slots corresponding TO the first retransmission is not valid, so that the RV sequence of {0, 0} can be applied from the TO corresponding TO the second retransmission. In this case, since n×m=8, the ue can start repeating PUSCH transmission in the slot S or slot U remaining after excluding the second slot (slot U) of the TO corresponding TO the fourth repetition transmission.

Referring TO fig. 31B, in an RV sequence of a TO configuration from which repetition of PUSCH transmission can be started, mapping is sequentially performed starting from rv=0. In the case where TO having rv=0 and corresponding TO the first retransmission is not valid, the configured RV sequence may be sequentially reconfigured from rv=0 from the retransmission of the next valid TO, and mapping of each RV value of the RV sequence may be performed. For example, the UE is configured with a repeated PUSCH transmission type a, n=2, m=4 for CG-based transmission schemes. In addition, the base station is configured with an RV sequence of {0,2,3,1 }. The TO of the two slots corresponding TO the first retransmission is not valid, so that the value of rv=0 is reconfigured in order from the TO corresponding TO the second retransmission, and the RV sequence may be mapped. That is, rv=0 maps TO the TO corresponding TO the second repeated transmission, rv=2 maps TO the TO corresponding TO the third repeated transmission, rv=3 maps TO the TO corresponding TO the fourth repeated transmission, and thus repeated PUSCH transmission may start at the TO corresponding TO the second repeated transmission.

In addition, the case where the TO with rv=0 is invalid may be based on information that the UE and the base station assume as well. In the case where the RV sequence and RV values for the repeated PUSCH transmission that the UE may assume are different from those of the base station, the base station may need to perform blind detection of PUSCH having a value of rv=0 each time in addition to PUSCH having RV values configured based on the existing RV sequence configured for the UE in order to receive CG-based repeated PUSCH transmission in resources performing CG-based repeated PUSCH transmission.

Referring to fig. 32, in case that a TB is transmitted via a plurality of slots and a TBs is greater than a single slot, a UE may scale and adjust the TBs or resources for transmitting PUSCH to determine the transmission power of PUSCH and the number of modulation symbols (or bits) of each parameter of UCI to be multiplexed with PUSCH.

Specifically, in operation S32010, the UE may receive configuration information for resource allocation of a Transport Block (TB) via a PUSCH from a base station. In this case, the UE may be allocated resources by dynamic grant or may use resources configured by configuration grant.

Subsequently, the UE may map the TO a plurality of slots included in the resource based on the configuration information in operation S32020. In this case, the UE may determine the size of the TB before mapping the TB to a plurality of slots, and the size of the TB may be larger than a single slot.

Subsequently, in operation S32030, the UE may transmit a TB via a PUSCH in a plurality of slots.

The PUSCH may be multiplexed with different Uplink Control Information (UCI) in each of a plurality of slots.

In this case, the number of modulation symbols of each of the pieces of information (or the plurality of parameters) included in the different UCI may be determined according to the size of the TB scaled based on the plurality of slots or the resource scaled based on the plurality of slots.

That is, the size of the TB may be scaled according to the method described with reference to fig. 22 and 23.

In this case, for the pieces of information (or the plurality of parameters), the number of modulation symbols may be determined based on the size of the TB sequentially scaled in the order of the earliest slot in the time domain among the plurality of slots or according to the resource scaled based on the plurality of slots.

The pieces of information (or parameters) included in the UCI may include a hybrid automatic repeat request (HARQ) -Acknowledgement (ACK)/negative-acknowledgement (NACK), a Channel State Information (CSI) 1 st part, and a CSI 2 nd part.

In this case, for a plurality of pieces of information (or a plurality of parameters), the number of modulation symbols (or the number of bits) to be multiplexed may be determined in priority order. For example, based on the scaled size of the TB or according to the resources scaled based on the plurality of slots, the number of modulation symbols of HARQ-ACK/NACK may be determined as a first priority, the number of modulation symbols of CSI part 1 as a second priority, and the number of modulation symbols of CSI part 2 as a third priority.

In case that the TB is configured with one or more code blocks, the number of modulation symbols of each of a plurality of pieces of information (or a plurality of parameters) included in different UCI may be determined based on a value obtained by scaling the entire size of the one or more code blocks based on a plurality of slots or resources scaled based on a plurality of slots.

The transmission power of the PUSCH may be determined based on a slot unit, based on a value obtained by scaling an overall size of one or more code blocks included in the TB based on a plurality of slots, or according to a resource scaled based on a plurality of slots. That is, in the case of transmitting TBs via a plurality of slots as described with reference to fig. 24 to, the transmission power for transmitting PUSCH may be determined based on the TBs in each slot.

The PUSCH may be repeatedly transmitted according to a Configuration Grant (CG) allocated resource based on configuration information, and may be repeatedly transmitted by using a predetermined Redundancy Version (RV) sequence configured by a base station for repeated PUSCH transmission.

In this case, the values of the RV sequence for repeating PUSCH transmission and the RV sequence allocated TO may be configured according TO the method already described with reference TO fig. 27 TO 31.

For example, the predetermined RV sequence of the repeated transmission of PUSCH is {0, 0}, and the repeated transmission of PUSCH may start in a slot in which a value of "0" of the predetermined RV sequence is configured.

The above description of the present disclosure is for illustrative purposes, and those skilled in the art to which the present disclosure pertains will appreciate that modifications of other specific forms can be readily achieved without changing the technical spirit or essential features of the present disclosure. Accordingly, it should be understood that the above-described embodiments are illustrative in all respects, rather than restrictive. For example, each element described as one type may be implemented in a distributed manner, and similarly, elements described as distributed may also be implemented in combination.

The scope of the present disclosure is indicated by the claims to be described below rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present disclosure.

Claims

1. A method of transmitting a Physical Uplink Shared Channel (PUSCH) by a User Equipment (UE) to a base station in a wireless communication system, the method comprising:

receiving configuration information for allocating resources for transmitting a Transport Block (TB) via the PUSCH from a base station; and

mapping the TB to a plurality of slots included in the resource based on the configuration information;

the TB is transmitted via the PUSCH in the plurality of slots,

wherein the PUSCH is multiplexed with different Uplink Control Information (UCI) in each of the plurality of slots, and

wherein the number of modulation symbols in each of a plurality of pieces of information included in different UCI is determined according to the size of the TB scaled based on the plurality of slots or the resource scaled based on the plurality of slots.

2. The method of claim 1, wherein for the plurality of pieces of information, the number of modulation symbols is determined sequentially in an order of an earliest time slot of the plurality of time slots in a time domain based on a size of the scaled TB, or according to the resource scaled based on the plurality of time slots.

3. The method of claim 1, wherein the plurality of pieces of information comprise hybrid automatic repeat request (HARQ) -Acknowledgement (ACK)/Negative Acknowledgement (NACK), channel State Information (CSI) 1 st part and CSI 2 nd part, and

wherein the number of modulation symbols is determined in an order of the HARQ-ACK/NACK, CSI 1 st part and CSI 2 nd part as a first order, a second order and a third order based on the size of the scaled TB, or according to the resource scaled based on the plurality of slots.

4. The method of claim 1, wherein, in the case where the TB includes one or more code blocks, the number of modulation symbols included in each of the pieces of information in the different UCI is determined based on a value obtained by scaling an overall size of the one or more code blocks based on the plurality of slots or based on the resources scaled based on the plurality of slots.

5. The method of claim 1, wherein the transmission power of the PUSCH in a slot unit is determined based on a value obtained by scaling an overall size of one or more code blocks included in the TB based on the plurality of slots or the resource scaled based on the plurality of slots.

6. The method of claim 1, wherein the PUSCH is transmitted repeatedly in accordance with the resource allocated based on a Configuration Grant (CG) of the configuration information.

7. The method of claim 6, wherein the PUSCH is retransmitted using a predetermined Redundancy Version (RV) sequence for the repeated transmission of the PUSCH configured by the base station.

8. The method of claim 7, wherein the predetermined RV sequence is {0, 0}, and

the repeated transmission of the PUSCH starts from a slot in which a "0" value of the predetermined RV sequence is configured.

9. A User Equipment (UE) in a wireless communication system, the UE comprising:

a communication module; and

a processor configured to control the communication module,

wherein the processor is configured to:

receiving configuration information for allocating resources for transmitting Transport Blocks (TBs) via a Physical Uplink Shared Channel (PUSCH) from a base station; and

the TB is transmitted via the PUSCH in the plurality of slots,

Wherein the number of modulation symbols included in each of a plurality of pieces of information in the UCI of different PUCCHs is determined according to the size of the TB scaled based on a slot in which the UCI is transmitted among the plurality of slots or according to the resource scaled based on the plurality of slots.

10. The user equipment of claim 9, wherein, for the plurality of pieces of information, the number of modulation symbols is determined sequentially in an order of an earliest time slot of the plurality of time slots in a time domain based on a size of the scaled TB, or according to the resources scaled based on the plurality of time slots.

11. The UE of claim 9, wherein the plurality of pieces of information comprise hybrid automatic repeat request (HARQ) -Acknowledgement (ACK)/Negative Acknowledgement (NACK), channel State Information (CSI) 1 st part and CSI 2 nd part, and

12. The UE of claim 9, wherein, in the case where the TB includes one or more code blocks, the number of modulation symbols included in each of the pieces of information in the different UCI is determined based on a value obtained by scaling an overall size of the one or more code blocks based on the plurality of slots or based on the resources scaled based on the plurality of slots.

13. The UE of claim 9, wherein the transmission power of the PUSCH in a slot unit is determined based on a value obtained by scaling an overall size of one or more code blocks included in the TB based on the plurality of slots or the resource scaled based on the plurality of slots.

14. The UE of claim 9, wherein the PUSCH is transmitted repeatedly in accordance with the resource allocated based on a Configuration Grant (CG) of the configuration information.

15. The UE of claim 14, wherein the PUSCH is retransmitted using a predetermined Redundancy Version (RV) sequence for the repeated transmission of the PUSCH configured by the base station.

16. The UE of claim 7, wherein the predetermined RV sequence is {0, 0}, and