Method and apparatus for transmitting uplink channel in a wirelss communication system

Abstract

The present disclosure relates to a 5G (5th generation) or pre-5G communication system for supporting higher data transmission rates than 4G (4th generation) communication systems such as LTE (Long Term Evolution). According to various embodiments of the present disclosure, a method of operation of a terminal in a wireless communication system is provided. The above method comprises: receiving first configuration information from a base station regarding TB processing over multi-slot (TBoMS) or simultaneous channel configuration; allocating a PUSCH (physical uplink shared channel) transmission resource based on the first configuration information; receiving second configuration information from the base station regarding a cancellation indicator (CI) or a dynamic slot-format indication (SFI); determining whether to transmit the PUSCH transmission resource based on the second configuration information; setting transmission power and phase for TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the first configuration information; and performing at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the PUSCH transmission resource.

Description

Technology Field

[0001] The present disclosure generally relates to a wireless communication system, and more specifically to a method and apparatus for transmitting an uplink channel in a wireless communication system. Background Technology

[0003] 4G(4 th To meet the increasing demand for wireless data traffic following the commercialization of the (generation) communication system, improved 5G (5 th Efforts are being made to develop 5G communication systems or pre-5G communication systems. For this reason, 5G communication systems or pre-5G communication systems are referred to as Beyond 4G Network communication systems or Post-LTE systems.

[0004] To achieve high data transmission rates, 5G communication systems are being considered for implementation in the mmWave band (e.g., the 60 GHz band). To mitigate path loss and increase the transmission distance of radio waves in the mmWave band, beamforming, massive MIMO, full Dimensional MIMO (FD-MIMO), array antenna, analog beamforming, and large-scale antenna technologies are being discussed for 5G communication systems.

[0005] In addition, to improve the network of the system, technologies such as advanced small cell, advanced small cell, cloud radio access network (cloud RAN), ultra-dense network, Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation are being developed in 5G communication systems.

[0006] In addition, advanced coding modulation (ACM) methods such as FQAM (Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation) and SWSC (Sliding Window Superposition Coding), as well as advanced access technologies such as FBMC (Filter Bank Multi Carrier), NOMA (Non Orthogonal Multiple Access), and SCMA (Sparse Code Multiple Access) are being developed in 5G systems.

[0007] With the recent advancement of 5G communication systems, there is a growing need for a method of repeatedly transmitting the uplink to expand cell coverage in the mmWave band. The problem to be solved

[0009] Based on the discussion above, the present disclosure provides a method and apparatus for transmitting an uplink channel in a wireless communication system. means of solving the problem

[0011] According to various embodiments of the present disclosure, a method of operation of a terminal in a wireless communication system is provided. The method comprises: receiving first configuration information from a base station regarding TB processing over multi-slot (TBoMS) or simultaneous channel configuration; allocating a PUSCH (physical uplink shared channel) transmission resource based on the first configuration information; receiving second configuration information from the base station regarding a cancellation indicator (CI) or a dynamic slot-format indication (SFI); determining whether to transmit the PUSCH transmission resource based on the second configuration information; setting transmission power and phase for TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the first configuration information; and performing at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the PUSCH transmission resource.

[0012] According to various embodiments of the present disclosure, a method of operation of a base station in a wireless communication system is provided. The method comprises: transmitting first configuration information for TB processing over multi-slot (TBoMS) or simultaneous channel configuration to a terminal; allocating a PUSCH (physical uplink shared channel) transmission resource based on the first configuration information; transmitting second configuration information for a cancellation indicator (CI) or a dynamic slot-format indication (SFI) to the terminal; determining whether to transmit the PUSCH transmission resource based on the second configuration information; receiving at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the PUSCH transmission resource; and performing joint channel estimation and decoding for at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the first configuration information and the PUSCH transmission resource.

[0013] According to various embodiments of the present disclosure, a terminal is provided in a wireless communication system. The terminal comprises a transceiver and at least one processor, wherein the at least one processor receives first configuration information from a base station regarding TB processing over multi-slot (TBoMS) or simultaneous channel configuration, allocates a PUSCH (physical uplink shared channel) transmission resource based on the first configuration information, receives second configuration information from the base station regarding a cancellation indicator (CI) or a dynamic slot-format indication (SFI), determines whether to transmit for the PUSCH transmission resource based on the second configuration information, sets the transmission power and phase for TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the first configuration information, and is configured to perform at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the PUSCH transmission resource.

[0014] According to various embodiments of the present disclosure, a base station is provided in a wireless communication system. The base station comprises a transceiver and at least one processor, wherein the at least one processor transmits first configuration information for TB processing over multi-slot (TBoMS) or simultaneous channel configuration to a terminal, allocates a PUSCH (physical uplink shared channel) transmission resource based on the first configuration information, transmits second configuration information for a cancellation (CI) or dynamic slot-format indication (SFI) to the terminal, determines whether to transmit for the PUSCH transmission resource based on the second configuration information, receives at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the PUSCH transmission resource, and performs joint channel estimation and decoding for at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the first configuration information and the PUSCH transmission resource. Effects of the invention

[0016] Various embodiments of the present disclosure provide a method and apparatus for transmitting an uplink channel in a wireless communication system.

[0017] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below. Brief explanation of the drawing

[0019] FIG. 1 illustrates a wireless communication system according to various embodiments of the present disclosure. FIG. 2a illustrates the basic structure of the time-frequency domain, which is a wireless resource domain in which data or a control channel is transmitted in a wireless communication system according to various embodiments of the present disclosure. FIG. 2b illustrates a slot structure in a wireless communication system according to various embodiments of the present disclosure. FIG. 3 illustrates a DMRS pattern used for communication between a base station and a terminal in a wireless communication system according to various embodiments of the present disclosure. FIG. 4 illustrates an example of channel estimation using DMRS received from one PUSCH in a time band in a wireless communication system according to various embodiments of the present disclosure. FIG. 5 illustrates an example of simultaneous channel estimation using DMRS received from multiple PUSCHs in a time band in a wireless communication system according to various embodiments of the present disclosure. FIG. 6 illustrates an example of PUSCH repeat transmission type B in a wireless communication system according to various embodiments of the present disclosure. FIG. 7 illustrates an example of a process in which a transmission block is divided into several code blocks and a CRC is added in a wireless communication system according to various embodiments of the present disclosure. FIG. 8 illustrates an example of PUSCH transmission / repeated transmission according to CI, SFI settings and PUSCH / PUCCH overlap in a wireless communication system according to various embodiments of the present disclosure. FIG. 9 illustrates an example of TBoMS PUSCH transmission in a wireless communication system according to various embodiments of the present disclosure. FIG. 10 illustrates an example of the operation of a terminal that transmits PUSCH based on CI settings in a multi-slot PUSCH transmission (TBoMS) composed of one TB in a wireless communication system according to various embodiments of the present disclosure. FIG. 11 illustrates an example of the operation of a terminal that transmits PUSCH based on CI settings in a multi-slot PUSCH transmission (TBoMS) composed of one TB in a wireless communication system according to various embodiments of the present disclosure. FIG. 12 illustrates an example of the operation of a terminal transmitting PUSCH based on CI settings to multiple PUSCHs estimated to be simultaneous channels in a wireless communication system according to various embodiments of the present disclosure. FIG. 13 illustrates an example of the operation of a terminal transmitting a PUSCH based on dynamic SFI settings to multiple PUSCHs estimated to be simultaneous channels in a wireless communication system according to various embodiments of the present disclosure. FIG. 14 is a flowchart illustrating the operation of a base station controlling CI and dynamic SFI in a multi-slot PUSCH transmission (TBoMS) composed of one TB and a simultaneous channel estimated PUSCH transmission in a wireless communication system according to various embodiments of the present disclosure. FIG. 15 is a flowchart illustrating the operation of a terminal controlling CI and dynamic SFI in a multi-slot PUSCH transmission (TBoMS) composed of one TB and a simultaneous channel estimated PUSCH transmission in a wireless communication system according to various embodiments of the present disclosure. FIG. 16 is a block diagram of a terminal according to various embodiments of the present disclosure. FIG. 17 is a block diagram of a base station according to various embodiments of the present disclosure. Specific details for implementing the invention

[0020] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit the scope of other embodiments. A singular expression may include a plural expression unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art described in this disclosure. Terms used in this disclosure that are defined in a general dictionary may be interpreted as having the same or similar meaning as they have in the context of the relevant technology, and are not to be interpreted in an ideal or overly formal sense unless explicitly defined in this disclosure. In some cases, even terms defined in this disclosure are not to be interpreted to exclude the embodiments of this disclosure.

[0021] In the various embodiments of the present disclosure described below, a hardware-based approach is described as an example. However, since the various embodiments of the present disclosure include techniques using both hardware and software, the various embodiments of the present disclosure do not exclude a software-based approach.

[0023] Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Although the present disclosure describes embodiments for improving coverage for PUSCH (physical uplink shared channel) transmission, it is not limited to each specific embodiment, and it may be possible to utilize a method for setting frequency resources corresponding to other channels by using all or a combination of some embodiments of one or more embodiments proposed in the present disclosure. Accordingly, the embodiments of the present disclosure may be applied with some modifications at the discretion of a person with skilled technical knowledge, without significantly departing from the scope of the present disclosure.

[0024] Furthermore, in describing the present disclosure, if it is determined that a detailed description of related functions or configurations could unnecessarily obscure the essence of the present disclosure, such detailed description is omitted. Additionally, the terms described below are defined in consideration of their functions within the present disclosure, and these definitions may vary depending on the intent or practices of the user or operator. Therefore, their definitions should be based on the content throughout this specification.

[0025] Wireless communication systems are evolving from providing early voice-oriented services to broadband wireless communication systems that provide high-speed, high-quality packet data services, such as communication standards like 3GPP’s HSPA (high speed packet access), LTE (long term evolution or E-UTRA (evolved universal terrestrial radio access)), LTE-Advanced (LTE-A), LTE-Pro, 3GPP2’s HRPD (high rate packet data), UMB (ultra mobile broadband), and IEEE’s 802.17e.

[0026] In LTE systems, a representative example of broadband wireless communication systems, the downlink (DL) employs the orthogonal frequency division multiplexing (OFDM) method, while the uplink (UL) employs the single carrier frequency division multiple access (SC-FDMA) method. The uplink refers to a wireless link through which a terminal (user equipment (UE) or mobile station (MS)) transmits data or control signals to a base station (eNode B (eNB) or base station (BS)), and the downlink refers to a wireless link through which a base station transmits data or control signals to a terminal. Furthermore, the aforementioned multiple access method typically ensures that the time-frequency resources to be used to transmit data or control information for each user do not overlap—that is, that orthogonality is established—by allocating and operating them in such a way that the data or control information of each user is distinguished.

[0027] 5G communication systems, which are communication systems following LTE, must support services that simultaneously satisfy various requirements so as to freely reflect the diverse needs of users and service providers. Services considered for 5G communication systems include enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra reliability low latency communication (URLC).

[0028] eMBB aims to provide data transmission speeds that are superior to those supported by existing LTE, LTE-A, or LTE-Pro. For example, in a 5G communication system, eMBB must be able to provide a peak data rate of 20 Gbps in the downlink and 10 Gbps in the uplink from the perspective of a single base station. Furthermore, while providing the peak data rates, the 5G communication system must also provide an increased user-perceived data rate. To satisfy these requirements, improvements in various transmission and reception technologies, including enhanced multi-input multi-output (MIMO) transmission technology, may be required. Additionally, while LTE systems transmit signals using a maximum transmission bandwidth of 20 MHz in the 2 GHz band, 5G communication systems can meet the data transmission speeds required by the 5G communication system by using a frequency bandwidth wider than 20 MHz in frequency bands of 3 to 6 GHz or above 6 GHz.

[0029] Simultaneously, mMTC is being considered to support application services such as the Internet of Things (IoT) in 5G communication systems. To efficiently provide IoT, mMTC requires support for a large number of terminal connections within a cell, improved terminal coverage, enhanced battery life, and reduced terminal costs. Since IoT provides communication functions attached to various sensors and devices, it must be possible to support a large number of terminals within a cell (e.g., 1,000,000 terminals / km²). Furthermore, due to the nature of the service, terminals supporting mMTC are likely to be located in dead zones not covered by cells, such as building basements, thus requiring wider coverage compared to other services provided by 5G communication systems. Terminals supporting mMTC must consist of low-cost devices, and because it is difficult to frequently replace terminal batteries, they require a very long battery life of 10 to 16 years.

[0030] Finally, URLLC is a mission-critical cellular-based wireless communication service. Examples include services used for remote control of robots or machinery, industrial automation, unmanned aerial vehicles, remote health care, and emergency alerts. Therefore, the communication provided by URLLC must offer very low latency and very high reliability. For instance, services supporting URLLC must satisfy an air interface latency of less than 0.5 milliseconds and simultaneously meet the requirement of a packet error rate of 10⁻⁵ or less. Consequently, for services supporting URLLC, 5G systems must provide a smaller transmit time interval (TTI) than other services and simultaneously allocate wide resources in the frequency band to ensure the reliability of the communication link.

[0031] Three services of a 5G communication system (hereinafter interchangeable with 5G systems), namely eMBB, URLLC, and mMTC, can be multiplexed and transmitted within a single system. In this case, different transmission and reception techniques and transmission and reception parameters may be used between the services to satisfy the different requirements of each service.

[0033] Terms referring to signals, channels, control information, network entities, and device components used in the following description are examples provided for the convenience of explanation. Accordingly, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may be used.

[0034] Additionally, the present disclosure describes various embodiments using terms used in some communication standards (e.g., 3GPP (3rd Generation Partnership Project)), but this is merely illustrative. Various embodiments of the present disclosure can be easily modified and applied to other communication systems.

[0036] FIG. 1 illustrates a wireless communication system according to various embodiments of the present disclosure. FIG. 1 illustrates a base station (100), a terminal (120), and a terminal (130) as part of the nodes utilizing a wireless channel in the wireless communication system. FIG. 1 illustrates only one base station, but other base stations identical or similar to the base station (100) may be additionally included.

[0037] A base station (100) is a network infrastructure that provides wireless access to terminals (120, 130). The base station (100) has coverage defined as a certain geographical area based on the distance at which it can transmit signals. In addition to being a base station, the base station (110) may be referred to as an 'access point (AP)', 'eNodeB (eNB)', '5G node (5th generation node)', 'next generation nodeB (gNB)', 'wireless point', 'transmission / reception point (TRP)', or other terms having an equivalent technical meaning.

[0038] Each of the terminal (120) and terminal (130) is a device used by a user and performs communication with the base station (100) via a wireless channel. In some cases, at least one of the terminal (120) and terminal (130) may be operated without user involvement. That is, at least one of the terminal (120) and terminal (130) is a device that performs machine type communication (MTC) and may not be carried by the user. Each of the terminal (120) and terminal (130) may be referred to as 'user equipment (UE)', 'mobile station', 'subscriber station', 'remote terminal', 'wireless terminal', or 'user device', or other terms having an equivalent technical meaning, in addition to 'terminal'.

[0039] A base station (100), a terminal (120), and a terminal (130) can transmit and receive wireless signals in a millimeter wave (mmWave) band (e.g., 28 GHz, 30 GHz, 38 GHz, 60 GHz). At this time, to improve channel gain, the base station (100), the terminal (120), and the terminal (130) can perform beamforming. Here, beamforming may include transmission beamforming and reception beamforming. That is, the base station (100), the terminal (120), and the terminal (130) can impart directivity to the transmission signal or the reception signal. To this end, the base station (100) and the terminals (120, 130) can select serving beams (112, 113, 121, 131) through a beam search or beam management procedure. After serving beams (112, 113, 121, 131) are selected, subsequent communication can be performed through a resource that is in a quasi-co-located (QCL) relationship with the resource that transmitted the serving beams (112, 113, 121, 131).

[0040] If large-scale characteristics of the channel transmitting the symbol on the first antenna port can be inferred from the channel transmitting the symbol on the second antenna port, the first antenna port and the second antenna port may be evaluated to have a QCL relationship. For example, the large-scale characteristics may include at least one of a delay spread, a Doppler spread, a Doppler shift, an average gain, an average delay, and a spatial receiver parameter.

[0042] FIG. 2a illustrates the basic structure of the time-frequency domain, which is a wireless resource domain in which data or a control channel is transmitted in a wireless communication system according to various embodiments of the present disclosure.

[0043] Specifically, FIG. 2a is a diagram illustrating the basic structure of the time-frequency domain, which is a wireless resource domain of a 5G system.

[0044] In FIG. 2a, the horizontal axis represents the time domain, and the vertical axis represents the frequency domain. In the time and frequency domains, the basic unit of a resource is a resource element (RE, 101), which can be defined as one OFDM (orthogonal frequency division multiplexing) symbol (or DFT-s-OFDM (discrete Fourier transform spread OFDM) symbol) (102) on the time axis and one subcarrier (103) on the frequency axis. In the frequency domain (For example, 12) consecutive REs can constitute a single resource block (resource block, RB, 104). Also, in the time domain A number of consecutive OFDM symbols can form a subframe (110).

[0046] FIG. 2b illustrates a slot structure in a wireless communication system according to various embodiments of the present disclosure.

[0047] Specifically, FIG. 2b is a diagram illustrating a slot structure considered in a 5G system.

[0048] FIG. 2b illustrates an example of a frame (200), subframe (201), and slot (202) structure. One frame (200) can be defined as 10ms. One subframe (201) can be defined as 1ms, and thus one frame (200) can be composed of a total of 10 subframes (201). Additionally, one slot (202, 203) can be defined as 14 OFDM symbols (i.e., the number of symbols per slot ( )=14). One subframe (201) may be composed of one or more slots (202, 203), and the number of slots (202, 203) per one subframe (201) may vary depending on μ (204, 205), which is a setting value for the subcarrier interval.

[0049] In the embodiment of FIG. 2, slot structures are illustrated for cases where the subcarrier spacing setting value is μ=0 (204) and μ=1 (205). When μ=0 (204), one subframe (201) can be composed of one slot (202), and when μ=1 (205), one subframe (201) can be composed of two slots (203). That is, depending on the setting value μ for the subcarrier spacing, the number of slots per subframe ( ) may vary, and accordingly, the number of slots per frame ( ) may vary. Depending on each subcarrier spacing setting μ and It can be defined by [Table 1] below.

[0050] [Table 1]

[0051]

[0052] Next, we will explain in detail the demodulation reference signal (DMRS), which is one of the reference signals in the 5G system.

[0053] A DMRS can be composed of multiple DMRS ports, and each port maintains orthogonality using CDM (code division multiplexing) or FDM (frequency division multiplexing) to prevent interference with one another. However, the term DMRS may be expressed using other terms depending on the user's intent and the purpose of use of the reference signal. More specifically, the term DMRS is merely a specific example provided to easily explain the technical content of this disclosure and to aid in understanding this disclosure, and is not intended to limit the scope of this disclosure. In other words, it is obvious to those skilled in the art that the technical concept of this disclosure can also be applied to reference signals.

[0055] FIG. 3 illustrates a DMRS pattern used for communication between a base station and a terminal in a wireless communication system according to various embodiments of the present disclosure.

[0056] Specifically, FIG. 3 illustrates DMRS patterns (type 1 and type 2) used for communication between a base station and a terminal in a 5G system.

[0057] Two DMRS patterns may be supported in a 5G system. Two DMRS patterns are specifically illustrated in FIG. 3. Referring to FIG. 3, the 1 symbol pattern (301) and the 2 symbol pattern (302) represent DMRS type 1. The 1 symbol pattern (301) and the 2 symbol pattern (302) of DMRS type 1 in FIG. 3 are DMRS patterns with a combination 2 structure and can be composed of two CDM groups, and different CDM groups can be FDM (frequency dimension multiplexing).

[0058] In the first symbol pattern (301) of FIG. 3, frequency-phase CDM is applied to the same CDM group to distinguish two DMRS ports, and thus, a total of four orthogonal DMRS ports can be configured. The DMRS port IDs mapped to each CDM group are shown in the first symbol pattern (301) of FIG. 3 (in the case of a downlink, the DMRS port ID is displayed by adding +1000 to the illustrated number). In the second symbol pattern (302) of FIG. 3, time / frequency-phase CDM is applied to the same CDM group to distinguish four DMRS ports, and thus, a total of eight orthogonal DMRS ports can be configured. The DMRS port IDs mapped to each CDM group are shown in the second symbol pattern (302) of FIG. 3 (in the case of a downlink, the DMRS port ID is displayed by adding +1000 to the illustrated number).

[0059] The DMRS type 2 of the 1 symbol pattern (303) and 2 symbol pattern (304) of Fig. 3 is a DMRS pattern structure in which FD-OCC (frequency domain orthogonal cover codes) is applied to frequency-adjacent subcarriers, and can be composed of three CDM groups, and different CDM groups can be FDM.

[0060] In the first symbol pattern (303) of FIG. 3, frequency-phase CDM is applied to the same CDM group to distinguish two DMRS ports, and thus a total of six orthogonal DMRS ports can be configured. The DMRS port IDs mapped to each CDM group are shown in the first symbol pattern (303) of FIG. 3 (in the case of a downlink, the DMRS port ID is displayed by adding +1000 to the shown number). In the second symbol pattern (304) of FIG. 3, time / frequency-phase CDM is applied to the same CDM group to distinguish four DMRS ports, and thus a total of twelve orthogonal DMRS ports can be configured. The DMRS port IDs mapped to each CDM group are shown in the second symbol pattern (304) of FIG. 3 (in the case of a downlink, the DMRS port ID is displayed by adding +1000 to the shown number).

[0061] As described above, in the NR system, two different DMRS patterns can be set, for example, DMRS type 1 of the 1 symbol pattern (301) and 2 symbol pattern (302) of FIG. 3, or DMRS type 2 of the 1 symbol pattern (303) and 2 symbol pattern (304). Additionally, it can be set whether the DMRS pattern is the 1 symbol pattern (301, 303) or the adjacent 2 symbol pattern (302, 304). Furthermore, in the NR system, not only are DMRS port numbers scheduled, but the number of CDM groups scheduled together for PDSCH rate matching (physical downlink shared channel rate matching) can also be set and signaled. Additionally, in the case of CP-OFDM (cyclic prefix based orthogonal frequency division multiplex), both of the two DMRS patterns described above may be supported in DL and UL, while in the case of DFT-S-OFDM (discrete Fourier transform spread OFDM), only DMRS Type 1 among the DMRS patterns described above may be supported in UL. Furthermore, additional DMRS may be supported for configuration. Front-loaded DMRS refers to the first DMRS appearing in the first symbol in time, and additional DMRS refers to the DMRS appearing in the symbol following the front-loaded DMRS. In an NR system, the number of additional DMRS can be set from a minimum of 0 to a maximum of 3. Also, when DMRS is configured, the same pattern as the front-loaded DMRS may be assumed.More specifically, for a front-loaded DMRS, if information is provided regarding whether the DMRS pattern type described above is Type 1 or Type 2, whether the DMRS pattern is a 1-symbol pattern or an adjacent 2-symbol pattern, and information regarding the number of DMRS ports and CDM groups used, then if additional DMRS are additionally configured, it can be assumed that the additional DMRS is configured with the same DMRS information as the front-loaded DMRS.

[0062] More specifically, the downlink DMRS settings described above can be configured through RRC signaling as shown in [Table 2] below.

[0064] [Table 2]

[0065]

[0067] In addition, the uplink DMRS settings described above can be configured through RRC signaling as shown in [Table 3] below.

[0068] [Table 3]

[0069]

[0071] FIG. 4 illustrates an example of channel estimation using DMRS received from one PUSCH in a time band in a wireless communication system according to various embodiments of the present disclosure.

[0072] Specifically, FIG. 4 is a diagram illustrating an example of channel estimation using DMRS received from one PUSCH in a time band in a 5G system.

[0073] In performing channel estimation for data decoding using the aforementioned DMRS, channel estimation can be performed within the precoding resource block group (PRG), which is the bundling unit, by utilizing physical resource blocks bundling linked to the system band in the frequency band. Additionally, in the time unit, channel estimation is performed by assuming that the precoding is the same only for the DMRS received from a single PUSCH.

[0075] FIG. 5 illustrates an example of simultaneous channel estimation using DMRS received from multiple PUSCHs in a time band in a wireless communication system according to various embodiments of the present disclosure.

[0076] Specifically, FIG. 5 is a diagram illustrating an example of joint channel estimation using DMRS received from multiple PUSCHs in a time band of a 5G system to which various embodiments of the present disclosure can be applied.

[0077] The base station can instruct the terminal whether to use the same precoding through a setting, and by utilizing this, the base station can estimate the channel by using DMRS transmissions with the same precoding together, thereby improving DMRS channel estimation performance.

[0078] Similar to the embodiment of FIG. 4, in the embodiment of FIG. 5, channel estimation for data decoding using the DMRS can be performed within a precoding resource block group (PRG), which is the corresponding bundling unit, by utilizing PRB bundling linked to the system band in the frequency band. Additionally, in the time unit, channel estimation is performed by assuming that only DMRS received from one or more PUSCHs have the same precoding. Through this, channel estimation performance can be improved because channel estimation based on multiple DMRSs is possible in the time band. In particular, channel estimation performance can be very important for improving coverage, as channel estimation performance can become a bottleneck even if data decoding performance is good.

[0079] The following describes a time domain resource allocation method for data channels in a 5G communication system. A base station can set a table of time domain resource allocation information for a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH) for a terminal as upper layer signaling (e.g., RRC signaling).

[0080] The base station may set up a table for PDSCH consisting of a maximum of maxNrofDL-Allocations = 17 entries, and for PUSCH, a table consisting of a maximum of maxNrofUL-Allocations = 17 entries. Time domain resource allocation information may include, for example, PDCCH-to-PDSCH slot timing (corresponding to a slot-unit time interval between the time when PDCCH is received and the time when the PDSCH scheduled by the received PDCCH is transmitted, denoted as K0) or PDCCH-to-PUSCH slot timing (corresponding to a slot-unit time interval between the time when PDCCH is received and the time when the PUSCH scheduled by the received PDCCH is transmitted, denoted as K2), information on the position and length of the starting symbol for which PDSCH or PUSCH is scheduled within the slot, and the mapping type of PDSCH or PUSCH. For example, time domain resource allocation information for PDSCH can be set to the terminal via an RRC signal as shown in [Table 4] below.

[0082] [Table 4]

[0083]

[0085] In addition, time domain resource allocation information for PUSCH can be set to the terminal via an RRC signal as shown in [Table 5] below, for example.

[0087] [Table 5]

[0088]

[0090] The base station may transmit one of the entries in the table for the time domain resource allocation information to the terminal via L1 signaling (e.g., downlink control information (DCI)). For example, the base station may direct one of the entries in the table for the time domain resource allocation information to the 'time domain resource allocation' field within the DCI. The terminal may obtain time domain resource allocation information for PDSCH or PUSCH based on the DCI received from the base station.

[0091] The following describes in detail the transmission of the physical uplink shared channel (PUSCH) in a 5G system. PUSCH transmission may be dynamically scheduled by a UL grant within the DCI, or operated by a configured grant Type 1 or a configured grant Type 2. Dynamic scheduling for PUSCH transmission may be indicated, for example, by DCI format 0_0 or 0_1.

[0092] A configured grant type 1 PUSCH transmission can be semi-statically configured by receiving a configuredGrantConfig containing the rrc-ConfiguredUplinkGrant of [Table 6] via upper signaling, without receiving a UL grant within the DCI. A configured grant type 2 PUSCH transmission can be semi-continuously scheduled by a UL grant within the DCI after receiving a configuredGrantConfig that does not contain the rrc-ConfiguredUplinkGrant of [Table 6] via upper signaling. When a PUSCH transmission is operated by a configured grant, the parameters applied to the PUSCH transmission may be applied through the upper signaling configuredGrantConfig of [Table 6], with the exception of specific parameters provided by the upper signaling pusch-Config of [Table 7] (e.g., dataScramblingIdentityPUSCH, txConfig, codebookSubset, maxRank, scaling of UCI-OnPUSCH, etc.). For example, if a terminal is provided with transformPrecoder within the upper signaling configuredGrantConfig of [Table 6], the terminal may apply tp-pi2BPSK within the pusch-Config of [Table 7] to the PUSCH transmission operated by the configured grant.

[0094] [Table 6]

[0095]

[0097] Next, the PUSCH transmission method is described. The DMRS antenna port for PUSCH transmission may be the same as the antenna port for SRS transmission. PUSCH transmission may follow a codebook-based transmission method and a non-codebook-based transmission method, respectively, depending on whether the value of txConfig in pusch-Config of the upper signaling [Table 7] is 'codebook' or 'non-codebook'. As described above, PUSCH transmission can be dynamically scheduled via DCI format 0_0 or 0_1 and can be semi-statically configured by a configured grant.

[0098] If the terminal is instructed to schedule a PUSCH transmission via DCI format 0_0, the terminal may perform beam configuration for the PUSCH transmission using the pucch-spatialRelationInfoID corresponding to the UE-specific (dedicated) PUCCH resource having the lowest ID within the active uplink bandwidth part (BWP) in the serving cell. In this case, the PUSCH transmission may be performed based on a single antenna port. The terminal may not expect to schedule a PUSCH transmission via DCI format 0_0 within a BWP where the PUCCH resource containing the pucch-spatialRelationInfo is not configured. If the terminal is not configured with txConfig within pusch-Config of [Table 7], the terminal may not expect to be scheduled via DCI format 0_1.

[0099] [Table 7]

[0100]

[0102] Next, codebook-based PUSCH transmission is described. Codebook-based PUSCH transmission can be dynamically scheduled via DCI format 0_0 or 0_1 and can operate semi-statically via a configured grant. When codebook-based PUSCH is dynamically scheduled via DCI format 0_1 ​​or semi-statically configured via a configured grant, the terminal can determine a precoder for PUSCH transmission based on the SRS resource indicator (SRI), the transmission precoding matrix indicator (TPMI), and the transmission rank (i.e., the number of PUSCH transmission layers).

[0103] In this case, the SRI may be provided through the field SRS resource indicator within the DCI or configured through the higher-level signaling srs-ResourceIndicator. The terminal may receive at least one SRS resource during codebook-based PUSCH transmission, and, for example, up to two. When the terminal receives the SRI through the DCI, the SRS resource indicated by the SRI may refer to the SRS resource corresponding to the SRI among the SRS resources transmitted prior to the PDCCH containing the SRI. Additionally, the TPMI and transmission rank may be provided through the field precoding information and number of layers within the DCI or configured through the higher-level signaling precodingAndNumberOfLayers. The TPMI may be used to indicate the precoder applied to the PUSCH transmission.

[0104] The precoder to be used for PUSCH transmission can be selected from an uplink codebook having the same number of antenna ports as the nrofSRS-Ports value in the upper signaling SRS-Config. In codebook-based PUSCH transmission, the terminal can determine the codebook subset based on TPMI and the codebookSubset in the upper signaling pusch-Config. The codebookSubset in the upper signaling pusch-Config can be set to one of 'fullyAndPartialAndNonCoherent', 'partialAndNonCoherent', or 'nonCoherent' based on the UE capability reported by the terminal to the base station.

[0105] If the terminal reports 'partialAndNonCoherent' as its UE capability, the terminal may not expect the value of the parent signaling codebookSubset to be set to 'fullyAndPartialAndNonCoherent'. Additionally, if the terminal reports 'nonCoherent' as its UE capability, the terminal may not expect the value of the parent signaling codebookSubset to be set to 'fullyAndPartialAndNonCoherent' or 'partialAndNonCoherent'. If nrofSRS-Ports within the parent signaling SRS-ResourceSet points to two SRS antenna ports, the terminal may not expect the value of the parent signaling codebookSubset to be set to 'partialAndNonCoherent'.

[0106] A terminal may receive one SRS resource set in which the usage value within the upper signaling SRS-ResourceSet is set to 'codebook', and one SRS resource within that SRS resource set may be indicated via SRI. If multiple SRS resources are set within the SRS resource set in which the usage value within the upper signaling SRS-ResourceSet is set to 'codebook', the terminal can expect that the value of nrofSRS-Ports within the upper signaling SRS-Resource will be set to the same value for all SRS resources.

[0107] A terminal transmits one or more SRS resources included in an SRS resource set, in which the usage value is set to 'codebook' according to the upper signaling, to a base station, and the base station may select one of the SRS resources transmitted by the terminal and instruct the terminal to perform PUSCH transmission using the transmit beam information of the corresponding SRS resource. In this case, in codebook-based PUSCH transmission, the SRI is used as information to select the index of one SRS resource and may be included in the DCI. Additionally, the base station may include information in the DCI that indicates the TPMI and rank to be used by the terminal for PUSCH transmission and transmit it. The terminal may perform PUSCH transmission by using the SRS resource indicated by the SRI and applying the precoder indicated by the indicated TPMI and rank based on the transmit beam of the corresponding SRS resource.

[0108] Next, non-codebook-based PUSCH transmission is described. Non-codebook-based PUSCH transmission can be dynamically scheduled via DCI format 0_0 or 0_1, or can operate semi-statically via a configured grant. If at least one SRS resource is configured within an SRS resource set in which the usage value within the upper signaling SRS-ResourceSet is set to 'nonCodebook', the terminal can receive a non-codebook-based PUSCH transmission via DCI format 0_1.

[0109] For an SRS resource set in which the usage value within the upper signaling SRS-ResourceSet is set to 'nonCodebook', the terminal may receive a non-zero power (NZP) CSI-RS resource associated with one SRS resource set. The terminal may perform calculations for a precoder for SRS transmission by measuring the NZP CSI-RS resource associated with the SRS resource set. If the difference between the last received symbol of the aperiodic NZP CSI-RS resource associated with the SRS resource set and the first symbol of the aperiodic SRS transmission at the terminal is less than a specific number of symbols (e.g., 42 symbols), the terminal may not expect the information for the precoder for SRS transmission to be updated.

[0110] If the value of resourceType in the upper signaling SRS-ResourceSet is set to 'aperiodic', the NZP CSI-RS associated with said SRS-ResourceSet may be indicated by the SRS request field in DCI format 0_1 ​​or 1_1. In this case, if the NZP CSI-RS resource associated with the SRS-ResourceSet is an aperioditic NZP CSI-RS resource and the value of the SRS request field in DCI format 0_1 ​​or 1_1 is not '00', it may indicate that the NZP CSI-RS associated with the SRS-ResourceSet exists. In this case, the DCI must not indicate cross carrier or cross BWP scheduling. Additionally, if the value of the SRS request indicates the presence of an NZP CSI-RS, the NZP CSI-RS may be located in the slot where the PDCCH containing the SRS request field was transmitted. In this case, the TCI states set on the scheduled subcarrier may not be set to QCL-TypeD.

[0111] If a periodic or semi-static SRS resource set is configured, the NZP CSI-RS associated with said SRS resource set may be indicated via the associated CSI-RS within the parent signaling SRS-ResourceSet. For non-codebook-based transmission, the terminal may not expect the parent signaling spatialRelationInfo for the SRS resource and the associated CSI-RS within the parent signaling SRS-ResourceSet to be configured together.

[0112] When a terminal is configured with multiple SRS resources, it may determine the precoder and transmission rank to be applied to the PUSCH transmission based on the SRI indicated by the base station. In this case, the SRI may be indicated via the field SRS resource indicator within the DCI or configured via the higher-level signaling srs-ResourceIndicator. Similar to the codebook-based PUSCH transmission described above, when the terminal receives the SRI via the DCI, the SRS resource indicated by the SRI may refer to the SRS resource corresponding to the SRI among the SRS resources transmitted prior to the PDCCH containing the SRI. The terminal may use one or multiple SRS resources for SRS transmission, and the maximum number of SRS resources that can be transmitted simultaneously in the same symbol within a single set of SRS resources and the maximum number of SRS resources may be determined by the UE capability reported by the terminal to the base station. In this case, the SRS resources transmitted simultaneously by the terminal may occupy the same RB. The terminal can configure one SRS port for each SRS resource. Only one SRS resource set can be configured where the usage value in the upper signaling SRS-ResourceSet is set to 'nonCodebook', and up to four SRS resources can be configured for non-codebook-based PUSCH transmission.

[0113] The base station transmits one NZP CSI-RS associated with an SRS resource set to the terminal, and the terminal can calculate a precoder to be used when transmitting one or more SRS resources within the SRS resource set based on the results measured upon receiving the NZP CSI-RS. When the terminal transmits one or more SRS resources within an SRS resource set where the usage is set to 'nonCodebook' to the base station, the terminal applies the calculated precoder, and the base station can select one or more SRS resources from among the received one or more SRS resources. In this case, in non-codebook-based PUSCH transmission, the SRI represents an index that can express a combination of one or more SRS resources, and the SRI may be included within the DCI. In this case, the number of SRS resources indicated by the SRI transmitted by the base station may be the number of transmission layers of the PUSCH, and the terminal can transmit the PUSCH by applying the precoder applied for SRS resource transmission to each layer.

[0114] Next, PUSCH repeat transmission is described. When a terminal is scheduled to transmit a PUSCH with DCI format 0_1 ​​in a PDCCH containing a CRC scrambled with C-RNTI, MCS-C-RNTI, or CS-RNTI, and the terminal is set to the upper layer signaling pusch-AggregationFactor, the same symbol allocation is applied in consecutive slots equal to pusch-AggregationFactor, and the PUSCH transmission may be limited to a single rank transmission. For example, the terminal must repeat the same transport block (TB) in consecutive slots equal to pusch-AggregationFactor, and the same symbol allocation must be applied for each slot. [Table 8] shows the redundancy version (RV) applied for PUSCH repeat transmission for each slot. If a terminal is scheduled to perform PUSCH repeated transmissions in multiple slots in DCI format 0_1, and at least one symbol among the slots where PUSCH repeated transmissions are performed is indicated as a downlink symbol according to the information in upper layer signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated, the terminal may not perform PUSCH transmissions in the slot where the symbol is located.

[0116] [Table 8]

[0117]

[0119] The following describes in detail the repetitive transmission of the uplink data channel (PUSCH) in a 5G system. 5G systems support two types of repetitive transmission methods for the uplink data channel: PUSCH repetitive transmission type A and PUSCH repetitive transmission type B. A terminal can receive either PUSCH repetitive transmission type A or B as a setting for upper layer signaling.

[0121] PUSCH Repeated Transmission Type A

[0122] - As described above, the start symbol and length of the uplink data channel are determined within a single slot using the time domain resource allocation method, and the base station can transmit the number of repeated transmissions to the terminal via upper layer signaling (e.g., RRC signaling) or L1 signaling (e.g., DCI).

[0123] - Based on the number of repeated transmissions received from the base station, the terminal may repeatedly transmit an uplink data channel in consecutive slots that has the same starting symbol and length as the uplink data channel configured above. At this time, in a slot configured as a downlink by the base station for the terminal, or if at least one of the symbols within the slot configured for repeated uplink data channel transmission for the terminal is configured as a downlink, the terminal may omit the transmission of the uplink data channel in that slot. That is, it may be included in the number of repeated uplink data channel transmissions but may not be transmitted.

[0124] PUSCH Repeated Transmission Type B

[0125] - As explained above, within a single slot, the start symbol and length of the uplink data channel are determined by the time domain resource allocation method, and the base station [determines] the number of repeated transmissions numberofrepetitions It can be transmitted to the terminal via upper signaling (e.g., RRC signaling) or L1 signaling (e.g., DCI).

[0126] - First, based on the starting symbol and length of the uplink data channel configured as described above, the nominal repetition of the uplink data channel can be determined as follows. Here, nominal repetition may refer to the symbol resources configured by the base station for repeated PUSCH transmission, and the terminal can determine the resources available for use as the uplink within the configured nominal repetition. In this case, the slot where the nth nominal repetition begins is The symbol given by and where nominal repetition starts in the above start slot is It can be given by. The slot where the nth nominal repetition ends is The symbol given by and where the nominal repetition ends in the last slot above is It can be given by. Here, n=0, ..., numberofrepetitions -1, where S represents the start symbol of the configured uplink data channel and L represents the symbol length of the configured uplink data channel. indicates the slot where the PUSCH transmission starts. can represent the number of symbols per slot.

[0127] - The terminal determines an invalid symbol for PUSCH repeat transmission type B. tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated Symbols set as downlink by may be determined as invalid symbols for PUSCH repeat transmission type B. Additionally, upper-layer parameters (e.g., InvalidSymbolPattern An invalid symbol may be set based on ). As an example, the above-mentioned upper-level parameter (e.g., InvalidSymbolPattern Invalid symbols can be set by providing a symbol-level bitmap spanning one or two slots. In this case, a value marked as 1 in the bitmap may represent an invalid symbol. Additionally, higher-level parameters (e.g., periodicityAndPattern The period and pattern of the above bitmap can be set through ). If upper-level parameters (e.g. InvalidSymbolPattern ) is set and InvalidSymbolPatternIndicator-ForDCIFormat0_1 or InvalidSymbolPatternIndicator-ForDCIFormat0_2 If the parameter indicates 1, the terminal applies an invalid symbol pattern, and if it indicates 0, it may not apply an invalid symbol pattern. Or, if the upper layer parameter (e.g., InvalidSymbolPattern ) is set and InvalidSymbolPatternIndicator-ForDCIFormat0_1 or InvalidSymbolPatternIndicator-ForDCIFormat0_2 If the parameter is not set, the terminal can apply an invalid symbol pattern.

[0128] - After an invalid symbol is determined in each nominal repetition, the terminal may consider the symbols excluding the determined invalid symbol as valid symbols. If one or more valid symbols are included in each nominal repetition, the nominal repetition may include one or more actual repetitions. Here, each actual repetition refers to a symbol actually used for PUSCH repeat transmission among the symbols set in the above-mentioned nominal repetition, and may include a continuous set of valid symbols that can be used for PUSCH repeat transmission type B within a single slot. Except when the symbol length L of the configured uplink data channel is 1, the terminal may omit the transmission of the actual repetition if an actual repetition having one symbol is set as valid. For each n-th actual repetition, a redundancy version (RV) is applied according to the set redundancy version pattern.

[0130] FIG. 6 illustrates an example of PUSCH repeat transmission type B in a wireless communication system according to various embodiments of the present disclosure.

[0131] Specifically, FIG. 6 illustrates an embodiment of PUSCH repeat transmission type B in a 5G system. The terminal may have a frame structure setting of TDD (time division duplexing) configured with 3 downlink slots, 1 special / flexible slot, and 1 uplink slot. Here, when the special / flexible slot is composed of 11 downlink symbols and 3 uplink symbols, the initial transmission slot in the second uplink transmission is the 3rd, and when the terminal is configured with the index of the start symbol of the uplink data channel set to 0 and the length of the uplink data channel set to 14 and the number of repeat transmissions repK=8, nominal repetition appears in 8 consecutive slots starting from the initial transmission slot (602). After that, the terminal determines that a symbol set as a downlink symbol in the frame structure (601) of the TDD system in each nominal repetition is an invalid symbol, and if valid symbols consist of one or more consecutive symbols in a slot, it is set as an actual repetition and can be transmitted (603). Accordingly, a total of repK_actual = 4 PUSCHs can be actually transmitted. At this time, when repK-RV is set to 0-2-3-1, the RV in the PUSCH of the first resource (604) actually transmitted is 0, the RV in the PUSCH of the second resource (605) actually transmitted is 2, the RV in the PUSCH of the third resource (606) actually transmitted is 3, and the RV in the PUSCH of the fourth resource (607) actually transmitted is 1.At this time, only the PUSCH with RV 0 and RV 3 values ​​can be decoded by itself. In the case of the first resource (604) and the third resource (606), the PUSCH is transmitted in only 3 symbols, which is much less than the actual set symbol length (14 symbols), so the rate-matched bit length (608, 610) becomes less than the bit length (609, 611) calculated by the setting.

[0133] FIG. 7 illustrates an example of a process in which a transmission block is divided into several code blocks and a CRC is added in a wireless communication system according to various embodiments of the present disclosure.

[0134] Specifically, FIG. 7 illustrates an example of a process in which a transport block (TB) is divided into multiple code blocks (CB) and a CRC is added in a 5G communication system. Referring to FIG. 7, a CRC (702) may be added to the end or the beginning of a single transport block (TB, 701) to be transmitted in an uplink or downlink. The CRC (702) may have 16 bits, 24 bits, a fixed number of bits, or a variable number of bits depending on channel conditions, and may be used to determine the success of channel coding. The block in which the CRC (702) is added to the TB (701) may be divided into multiple CBs (703, 704, 705, 706). At this time, the CBs can be divided with a predetermined maximum size, in which case the last CB (706) may be smaller than the other CBs (703, 704, 705). However, this is merely an example, and in other examples, the length of the last CB (706) and the other CBs (703, 704, 705) may be made equal by inserting 0, any value, or 1 into the last CB (706). Additionally, CRCs (711, 712, 713, 714) may be added to each of the CBs (707, 708, 709, 710). The CRCs (711, 712, 713, 714) may have 16 bits, 24 bits, or a predetermined fixed number of bits and may be used to determine the success of channel coding. To generate the CRC (702), TB (701) and a cyclic generator polynomial can be used, and the cyclic generator polynomial can be defined in various ways.For example, assuming the cyclic generator polynomial for a 24-bit CRC is gCRC24A(D) = D24 + D23 + D18 + D18 + D14 + D11 + D10 + D7 + D6 + D5 + D4 + D3 + D + 1, and L=24, TB data a0, a1, a2, a3, ..., a. A-1 For, CRC p1, p2, ..., p L-1 is 0D A+23 +a1D A+22 +...+a A-1 D 24 +p0D 23 +p1D 22 +...+p 22 D 1 +p 23 The values ​​for which the remainder is 0 when divided by gCRC24A(D), p1, p2, ..., p L-1...can be determined. In the example described above, the explanation was given by assuming the CRC length L to be 24 as an example, but the CRC length L can be determined to be various lengths such as 12, 16, 24, 32, 40, 48, 64, etc. After the CRC is added to the TB through this process, the TB+CRC can be divided into N CBs (703, 704, 705, 706). The CRC (711, 712, 713, 714) can be added to each of the divided CBs (703, 704, 705, 706). The CRC added to the CB may have a different length than when the CRC added to the TB was generated, or a different cyclic generator polynomial may be used for CRC generation. Additionally, the CRC (702) added to the TB and the CRCs (711, 712, 713, 714) added to the CB may be omitted depending on the type of CB to be applied to the CB. For example, if an LDPC code is applied to the CB instead of a Turbo code, the CRCs (711, 712, 713, 714) to be inserted into each code block may be omitted. However, even when LDPC is applied, the CRCs (711, 712, 713, 714) may be added to the CB as is. Also, when a Polar code is used, the CRC may be added or omitted. As described above in the embodiment of FIG. 7, the maximum length of one CB is determined according to the type of channel coding applied to the TB to be transmitted, and depending on the maximum length of the CB, the TB and the CRC added to the TB may be divided into code blocks. In a conventional LTE system, a CRC for the CB is added to the divided CB, and the data bits and CRC of the CB are encoded into a channel code to determine the coded bits, and for each coded bit, the number of bits for rate matching (RM) is determined as previously agreed.

[0135] The following describes in detail how to calculate the transport block size (TBS) in a 5G system.

[0136] The number of REs allocated to the PUSCH mapping in a PRB within the allocated resource Calculate. Is It can be calculated as. Here, is 12, and can represent the number of OFDM symbols assigned to PUSCH. is the number of REs in one PRB occupied by DMRS of the same CDM group. is the number of REs occupied by the overhead within the PRB as long as it is set to the upper signaling, and can be set to one of 0, 6, 12, or 18. Subsequently, the total number of REs allocated to PUSCH can be calculated. Is It is calculated as, indicates the number of PRBs allocated to the terminal. Number of temporary information bits Is It can be calculated as follows. Here, R is the code rate, and is the modulation order, and information regarding this value can be transmitted using the DCI's MCS bit field and a pre-agreed table. In addition, is the number of allocated layers. If If so, TBS can be calculated through the process below. Otherwise, TBS can be calculated through Step 4. and Through the formula It can be calculated. TBS is from [Table 9] below. Among values ​​not smaller than It can be determined as the value closest to .

[0138] [Table 9]

[0139]

[0141] if If, and Through the formula can be calculated. TBS is It can be determined through the value and the following [pseudo-code 1]. Below, C corresponds to the number of CBs contained in one TB.

[0142] [Pseudo-code 1 start]

[0143]

[0144] [End of Pseudo-code 1]

[0145] The following describes in detail the settings of cancellation indication (CI) and slot-format indication (SFI) in a 5G system, as well as the PUSCH transmission / repeated transmission control method based on PUSCH / PUCCH overlap.

[0147] FIG. 8 illustrates an example of PUSCH transmission / repeated transmission according to CI, SFI settings and PUSCH / PUCCH overlap in a wireless communication system according to various embodiments of the present disclosure.

[0148] Specifically, FIG. 8 is a diagram illustrating PUSCH transmission / repeated transmission according to the settings of cancellation indication (CI) and slot-format indication (SFI) and PUSCH / PUCCH overlap in a 5G system. A terminal ci-RNTI having DCI format 2_4 Upon receiving, the terminal may cancel the PUSCH transmission or actual repetition. At this time, the terminal [receives] the received DCI format 2_4 Cancel all symbols of the PUSCH transmission set from the earliest symbol of the symbol group set to '1'. In FIG. 8, when the terminal receives a PUSCH repeat transmission set through upper layer signaling and L1 signaling and receives a cancellation indication (CI) (803) in repe#3, the terminal cancels from the earliest symbol of CI in repe#3 to the last symbol of repe#3 (802).

[0149] The terminal receives PUCCH, PUSCH, and PRACH transmissions through upper-layer signaling and includes information regarding the slot format. DCI format 2_0 Upon receiving, the terminal can transmit PUCCH, PUSCH, and PRACH only in a symbol group where the slot format information included in DCI format 2_0 is set as the uplink symbol of the slot. In FIG. 8, when the terminal is set to transmit PUSCH repeatedly through upper layer signaling and L1 signaling and receives a slot format indication (SFI) (805) through DCI format 2_0 in repe#3, the terminal does not transmit the entire repe#3 including the downlink symbol if the SFI indicates the symbol of repe#3 as downlink (804).

[0150] The terminal can cancel a PUSCH / PUCCH transmission with a lower priority index based on a higher priority index for the overlap of PUSCH / PUCCH transmissions with different priority indices. In FIG. 8, the terminal uses upper layer signaling (e.g., phy-PriorityIndex ) and L1 signaling (e.g., priority indicator in DCI format 0_1 / 0_2If a PUSCH transmission (807) with a lower priority index = '0' overlaps with a PUSCH / PUCCH transmission (808) with a higher priority index = '1', the PUSCH containing the lower priority index = '0' is not transmitted (806). This is for illustrative purposes only and is not limited to PUSCH transmissions, and may also apply to PUCCH transmissions and PUSCH / PUCCH repeated transmissions.

[0152] FIG. 9 illustrates an example of TBoMS PUSCH transmission in a wireless communication system according to various embodiments of the present disclosure.

[0153] Specifically, FIG. 9 illustrates a PUSCH transmission with TB processing over multi-slot (TBoMS) in a 5G system. One TB (901) can be allocated to multiple slots (902, 903, 904, 905) for transmission. In this case, by allocating one TB instead of allocating multiple small TBs to the resources of the multiple slots (902, 903, 904, 905), the CRC ratio can be reduced, a low code rate can be obtained, channel coding gain can be obtained, and channel coverage can be improved. Additionally, referring to FIG. 7, a method of allocating time domain resources like PUSCH iterative transmission type A (906) and a method of allocating time domain resources like PUSCH iterative transmission type B (907) can be applied as time domain resource allocation methods for TBoMS PUSCH transmission. When resources are allocated in a PUSCH for TBoMS as in PUSCH repeat transmission type A, PUSCH can be transmitted to multiple slots that have the same symbol resources for each slot. On the other hand, when time domain resources are allocated in a PUSCH for TBoMS as in PUSCH repeat transmission type B, resources can be allocated as in case 0 (908), case 1 (909), and case 2 (10) depending on the length L of the symbol set through upper layer signaling and L1 signaling.

[0154] In various embodiments of the present disclosure, a PUSCH transmission method is described in which CI and dynamic SFI are set for multiple PUSCH transmissions that perform joint channel estimation and a PUSCH transmission in which one TB is allocated for multiple slots in a 5G communication system. Additionally, a PUSCH transmission method is provided for overlapping with PUSCH / PUCCH transmissions having different priority indices. The PUSCH transmission method for overlapping between CI, dynamic SFI, and PUSCH / PUCCH transmissions having different priorities according to one embodiment of the present disclosure can be used to improve uplink coverage by providing a flexible and optimized resource allocation method.

[0155] According to one embodiment of the present disclosure, a method of operation of a terminal for performing a PUSCH transmission when an overlap occurs between a PUSCH (physical uplink shared channel) transmitting a single TB over multiple slots and a PUSCH / PUCCH transmission having a cancellation indication (CI), dynamic SFI setting, and different priority, based on a PUSCH transmission of a transmission block processing over multiple slots (TB processing over multi-slot, TBoMS) and a concurrently estimated multiple PUSCH transmission, comprises: receiving from a base station setting information for a PUSCH (physical uplink shared channel) transmitting a single TB over multiple slots and a concurrently estimated multiple PUSCH transmission; and receiving from the base station PUSCH / PUCCH transmission setting information having a CI, dynamic SFI setting information, and different priority index. The above base station may include the step of transmitting a PUSCH according to the set information based on the set TBoMS setting information and the simultaneously estimated multiple PUSCH transmission setting information and CI, dynamic SFI setting information and other priority index PUSCH / PUCCH transmission setting information.

[0156] According to various embodiments of the present disclosure, a method of operation of a base station for controlling a PUSCH transmission when overlapping occurs between a TBoMS PUSCH and a concurrently estimated multiple PUSCH transmission, having a CI, dynamic SFI settings, and other priorities, based on transmitting a single TB to multiple slots (TBoMS PUSCH transmission and concurrently estimated multiple PUSCH transmission), comprises: transmitting to a terminal configuration information for transmitting a PUSCH (physical uplink shared channel) and concurrently estimated multiple PUSCH transmissions; transmitting to the terminal PUSCH / PUCCH transmission configuration information having a CI, dynamic SFI settings, and other priority index; and receiving a PUSCH according to the configured information based on the configured TBoMS configuration information and concurrently estimated multiple PUSCH transmission configuration information and the PUSCH / PUCCH transmission configuration information having a CI, dynamic SFI settings, and other priority index. It is possible.

[0157] According to various embodiments of the present disclosure, a PUSCH transmission method is described in which CI and dynamic SFI are set for multiple PUSCH transmissions that perform joint channel estimation and a PUSCH transmission in which one TB is allocated for multiple slots. Additionally, a PUSCH transmission method is described in which overlapping with PUSCH / PUCCH transmissions having different priority indices is described.

[0158] According to various embodiments of the present disclosure, a PUSCH transmission method is provided in which CI and dynamic SFI are set for multiple PUSCH transmissions that perform joint channel estimation and PUSCH transmission in which one TB is allocated for multiple slots in a 5G system. Additionally, a PUSCH transmission method is provided in which overlapping with PUSCH / PUCCH transmissions having different priority indices is provided. In this case, one embodiment of the present disclosure is described as continuous TBoMS PUSCH transmission for resources capable of PUSCH transmission based on the same PRB number and start symbol between TBoMS repeated transmissions, but this is merely for illustrative purposes, and various embodiments of the present disclosure are not limited to the above-described embodiment, and TBoMS repeated transmissions may be set and transmitted based on different PRB numbers, start symbols, and symbol lengths between repeated transmissions. In addition, although one embodiment of the present disclosure describes a PUSCH transmission method based on joint channel estimation of a PUSCH repeated transmission of type A multiple PUSCH repeated transmission, this is merely for illustrative purposes, and various embodiments of the present disclosure are not limited to the above-described embodiment, and joint channel estimation can be performed in continuous or discontinuous PUSCH transmissions where the consistency of the transmission power and the continuity of the phase of the PUSCH are maintained, and various embodiments of the present disclosure can be applied.

[0159] A PUSCH transmission method according to one embodiment of the present disclosure provides a PUSCH transmission control method for PUSCH / PUCCH overlapping having CI, dynamic SFI, and other priorities, and can improve uplink coverage through the flexible utilization of time domain resources. In describing various embodiments of the present disclosure, joint channel estimation of PUSCH transmission and PUSCH repeated transmission of TBoMS has been described as an example, but this is for illustrative purposes only, and various embodiments of the present disclosure are not limited to the above-described embodiments, and various embodiments according to the present disclosure may also be applied to PUSCH / PUCCH / PDSCH / PDCCH / PSSCH (physical sidelink shared channel) / PSCCH (physical sidelink control channel) transmission that is predefined / configured or through signaling between a base station and a terminal. In addition, according to various embodiments of the present disclosure below, a method for setting TBoMS and joint channel estimation may be predefined / set or set through signaling between a base station and a terminal. In this case, any value included in the information being set may be set as one or a combination of symbol / slot length, continuity of PUSCH transmission and interval between PUSCH transmissions, number of PUSCH transmissions, transmission occasion, etc.

[0160] <First Embodiment>

[0161] A first embodiment of the present disclosure provides a method for controlling PUSCH / PUCCH overlapping with CI, dynamic SFI, and other priorities when performing a multi-slot PUSCH transmission (TBoMS) operation for a single TB. Various embodiments of the present disclosure are described primarily with respect to PUSCH, and this method may also be applicable to PDSCH / PSSCH transmissions.

[0162] [Method 1]

[0163] Method 1 describes the PUSCH transmission method and the CI application method when CI is configured in a multi-slot PUSCH transmission (TBoMS) consisting of a single TB.

[0165] FIG. 10 illustrates an example of the operation of a terminal that transmits PUSCH based on CI settings in a multi-slot PUSCH transmission (TBoMS) composed of one TB in a wireless communication system according to various embodiments of the present disclosure.

[0166] Specifically, FIG. 10 illustrates the operation of a terminal that performs PUSCH transmission based on CI settings in a multi-slot PUSCH transmission (TBoMS) composed of one TB in a 5G system.

[0167] Referring to FIG. 10, a PUSCH transmission method according to the time-domain resource allocation (TDRA) type of TBoMS is illustrated when a terminal receives a multi-slot PUSCH (TBoMS) composed of one TB through upper layer signaling or L1 signaling from a base station and CI is set in overlap at slot #2.

[0168] A terminal can receive configuration information from a base station through upper layer signaling or L1 signaling, such as the number of slots k = 4, the starting symbol S = 0, the symbol length L = 14 symbols, and the time domain resource allocation (TDRA) type A, for transmitting a multi-slot PUSCH (TBoMS) composed of one TB (1001). At this time, based on the configured TBoMS information, TBoMS #0 composed of one TB can be transmitted across slots #0 to #3. Subsequently, when the terminal receives a CI (1003) from the base station, if the configured CI overlaps in slot #2, the first symbol of the overlap and the last symbol of the TBoMS PUSCH transmission may not be transmitted (1002). In this case, since too many symbols are not transmitted through the configured CI, the decoding performance of the TBoMS may be degraded. To address this, when a terminal receives a CI through upper layer signaling and L1 signaling, it can apply the range of resources to which the CI is applied based on the overlapping slot boundary and transmit via PUSCH. Referring to FIG. 10, when a terminal receives a CI (1005) and a TBoMS through upper layer signaling and L1 signaling, the terminal can cancel the PUSCH transmission based on the slot boundary in slot #2 of the TBoMS where the set CI is overlapping (1004). Through this method, more optimized PUSCH resources can be utilized, and through this, decoding performance can be improved to improve uplink coverage.

[0169] A terminal can receive configuration information from a base station through upper layer signaling or L1 signaling, such as the number of slots k = 4, starting symbol S = 6, symbol length L = 45 symbols, and time domain resource allocation (TDRA) type B, for transmitting a multi-slot PUSCH (TBoMS) composed of one TB (1006). At this time, based on the configured TBoMS information, TBoMS #0 composed of one TB can be transmitted across slots #0 to #3. Subsequently, when the terminal receives a CI (1008) from the base station, if the configured CI overlaps in slot #2, the first symbol of the overlap and the last symbol of the TBoMS PUSCH transmission may not be transmitted (1007). In this case, since too many symbols are not transmitted through the configured CI, the decoding performance of the TBoMS may be degraded. To address this, when a terminal receives a CI through upper layer signaling and L1 signaling, it can apply the range of resources to which the CI is applied based on the overlapping slot boundaries and transmit via PUSCH. Referring to FIG. 10, when a terminal receives a CI (1010) and a TBoMS through upper layer signaling and L1 signaling, the terminal can cancel the PUSCH transmission based on the slot boundary in slot #2 of the TBoMS where the set CI is overlapping (1009). Through this method, more optimized PUSCH resources can be utilized, and through this, decoding performance can be improved to improve uplink coverage.In describing the entire embodiment of the present disclosure above, a method using slot boundaries to apply CI to TBoMS has been described as an example; however, this is merely for illustrative purposes and does not limit the scope of the present disclosure. The reference value in the above method may be set as one or a combination of slot boundaries, nominal repetition boundaries, actual repetition boundaries, transmission occasion boundaries, cancellation indication sizes, etc.

[0170] Additionally, if the terminal receives a multi-slot PUSCH (TBoMS) consisting of a single TB from the base station via upper layer signaling or L1 signaling, the terminal may ignore the CI without applying it even if it receives it. It may also not apply it by considering it as having a higher priority than the CI. In this case, base station-based flexible scheduling is not possible, but the complexity of the terminal can be improved.

[0171] [Method 2]

[0172] Method 2 describes the PUSCH transmission method and the dynamic SFI application method when dynamic SFI is configured in a multi-slot PUSCH transmission (TBoMS) consisting of a single TB.

[0174] FIG. 11 illustrates an example of the operation of a terminal that transmits PUSCH based on CI settings in a multi-slot PUSCH transmission (TBoMS) composed of one TB in a wireless communication system according to various embodiments of the present disclosure.

[0175] Specifically, FIG. 11 is a diagram illustrating the operation of a terminal that transmits PUSCH based on CI settings in a multi-slot PUSCH transmission (TBoMS) composed of one TB in a 5G system.

[0176] Referring to FIG. 11, a method for transmitting TBoMS PUSCH is illustrated when a terminal receives a multi-slot PUSCH (TBoMS) composed of one TB from a base station through upper layer signaling or L1 signaling, and a dynamic SFI configured through DCI format 2_0 is configured in overlap at slot #2.

[0177] A terminal can receive configuration information from a base station through upper layer signaling or L1 signaling, such as the number of slots k = 4, starting symbol S = 6, symbol length L = 45 symbols, and time domain resource allocation (TDRA) type B, for transmitting a multi-slot PUSCH (TBoMS) composed of one TB (1101). Based on the information of the configured TBoMS, one TBS #0 can be transmitted as a TBoMS PUSCH across multiple slots #0 to #3. At this time, when the terminal receives a dynamic SFI (1103) from the base station via DCI format 2_0, if the received dynamic SFI overlaps with slot #2 and the symbol of slot #2 is set as a downlink, the entire TBoMS PUSCH transmission may be canceled (1102).

[0178] Additionally, when the terminal is configured with the number of slots k = 4, the starting symbol S = 6, the symbol length L = 45 symbols, and the time domain resource allocation (TDRA) type B to transmit a multi-slot PUSCH (TBoMS) composed of one TB through upper layer signaling or L1 signaling from the base station, one TBS #0 can be transmitted as a TBoMS PUSCH across multi-slot slots #0 to #3 based on the information of the configured TBoMS. At this time, when the terminal receives a dynamic SFI (1105) from the base station through DCI format 2_0, if the received dynamic SFI overlaps in slot #2 and the symbol of slot #2 is set as the downlink, the terminal can transmit the TBoMS PUSCH through the uplink resources of the remaining slots #0, #1, and #3 without transmitting only slot #2, which is a part of the TBoMS, based on the slot boundary (1104). In describing the entire embodiment of the present disclosure above, a method using slot boundaries to apply dynamic SFI to TBoMS via DCI format 2_0 has been described as an example; however, this is merely for illustrative purposes and does not limit the scope of the present disclosure. The reference value in the above method may be set as one or a combination of slot boundary, nominal repetition boundary, actual repetition boundary, transmission occasion boundary, and dynamic SFI symbol size. Furthermore, in describing the entire embodiment of the present disclosure above, the dynamic SFI setting via DCI format 2_0 may be set across multiple slots and PUSCH transmissions.

[0179] As an additional method, if TBoMS is configured through upper layer signaling and L1 signaling, the terminal can ignore and not apply the dynamic SFI configured through DCI format 2_0. In this case, TBoMS can be supported while improving the complexity of the terminal.

[0180] [Method 3]

[0181] Method 3 describes a method for setting the priority of a PUSCH transmission and a method for PUSCH transmission according to the priority when a multi-slot PUSCH transmission (TBoMS) consisting of a single TB is configured.

[0182] From the base station, the terminal can receive configuration information for a multi-slot PUSCH (TBoMS) transmission consisting of a single TB through upper layer signaling or L1 signaling. At this time, the base station can set the priority of the TBoMS to the terminal as high priority = 1. In this case, if there is an overlap with a PUSCH / PUCCH transmission having a lower priority, the PUSCH / PUCCH with the lower priority may not be transmitted. Through the above method, the reliability of the TBoMS PUSCH transmission can be guaranteed, and the complexity of the terminal can be improved by enabling operation without the addition of additional terminal functions.

[0183] Based on the methods of the above embodiments (Methods 1 to 3), the terminal can transmit by canceling only a portion of the time resources of TBoMS when a multi-slot PUSCH (TBoMS) transmission consisting of a single TB is established through upper layer signaling and L1 signaling, and CI and dynamic SFI are established. Additionally, regarding the resources that were not transmitted through the above method, they can be retransmitted by postphoneing according to a configuration mode (e.g., count-based PUSCH configuration) through upper layer signaling and L1 signaling. Through the method of the present disclosure, CI, dynamic SFI, and PUSCH / PUCCH overlapping methods are presented for TBoMS PUSCH transmission to improve uplink coverage, and through this, energy gain can be obtained through optimized resource configuration to improve uplink coverage.

[0184] <Second Embodiment>

[0185] A second embodiment of the present disclosure provides a method for controlling PUSCH / PUCCH overlapping with CI, dynamic SFI, and other priorities when performing simultaneous channel estimation for multiple PUSCHs. The present disclosure describes the method primarily in terms of PUSCH, but this method may also be applicable to PUCCH / PDCCH / PDSCH / PSSCH / PSCCH transmissions.

[0186] [Method 1]

[0187] Method 1 describes the PUSCH transmission method and the CI application method when CI is set on multiple PUSCHs estimated to be simultaneous channels.

[0189] FIG. 12 illustrates an example of the operation of a terminal transmitting PUSCH based on CI settings to multiple PUSCHs estimated to be simultaneous channels in a wireless communication system according to various embodiments of the present disclosure.

[0190] Specifically, FIG. 12 illustrates the operation of a terminal transmitting PUSCH based on CI settings for multiple PUSCHs estimated to be simultaneous channels in a 5G system.

[0191] Referring to FIG. 12, the terminal may receive a PUSCH repeat transmission setting from the base station via upper layer signaling or L1 signaling, and may receive a bundle size = 4 slots as a setting value for performing simultaneous channel estimation (1201). In this case, simultaneous channel estimation is performed in Repe #1 to #4 based on the bundle size set for the PUSCH repeat transmission, and power consistency and phase continuity of the PUSCH repeat transmission Repe #1 to #4 can be maintained to perform simultaneous channel estimation. At this time, if a CI (1202) is set via upper layer signaling and L1 signaling, the transmission of all symbols of Repe #3, starting from the first symbol of the CI, can be canceled in Repe #3 where the set CI overlaps (1203). At this time, due to the PUSCH repeat transmission canceled by the set CI, the phase continuity of Repe #1 to #2, a part of Repe #3, and Repe #4 is not maintained. Therefore, P with different phases based on the same transmission power setting PUSCH,0 and P' PUSCH,0 Each is applied starting from this cancelled PUSCH transmission. Channel estimation for repeated PUSCH transmissions may be performed by simultaneous channel estimation (1204) in Repe#1~#2 and a portion of Repe#3, single channel estimation in Repe#4, and simultaneous channel estimation (1205) in bundle size units from Repe#5 onwards. In the above configuration, a portion of Repe#3 may not be used for simultaneous channels and PUSCH transmissions depending on the settings and conditions in resource transmission. The transmission power setting of the above-configured Repe#4 may be updated according to the settings and conditions (e.g., minimum processing time for applying the settings).

[0192] In addition, as in the above method, the terminal may receive a PUSCH repeat transmission set from the base station via upper layer signaling or L1 signaling and receive a bundle size = 4 slots as a setting value for performing simultaneous channel estimation (1201). In this case, simultaneous channel estimation is performed in Repe #1 to #4 based on the bundle size set in the PUSCH repeat transmission, and power consistency and phase continuity of the PUSCH repeat transmission Repe #1 to #4 can be maintained to perform simultaneous channel estimation. At this time, if a CI (1206) is set through upper layer signaling and L1 signaling, the transmission of all symbols of Repe #3 from the first symbol of the CI to the entire symbol of Repe #3, where the set CI overlaps, can be canceled (1207). At this time, due to the PUSCH repeat transmission canceled by the set CI, the phase continuity of Repe #1 to #2, a part of Repe #3, and Repe #4 is not maintained. At this point, starting from the canceled PUSCH transmission of Repe#3, simultaneous channels can proceed from Repe#4, and transmission can be performed with the same transmission power based on the bundle size starting from Repe#4. Therefore, starting from Repe#3, the transmission power settings are P respectively PUSCH,0 and P PUSCH,1 It can be set as such. Subsequently, the channel estimation for repeated PUSCH transmissions can be performed by simultaneous channel estimation (1209) in parts of Repe#1~#2 and Repe#3, and by simultaneous channel estimation (1209) in bundle size units from Repe#4 onwards. In the above settings, parts of Repe#3 may not be used for simultaneous channel and PUSCH transmission depending on the settings and conditions in resource transmission.

[0193] Finally, if the terminal receives concurrent channel estimation through upper-layer signaling and L1 signaling, it can estimate concurrent channels for multiple PUSCH transmissions by ignoring CI. In this case, operation is possible without implementing additional functions of the terminal, thereby improving the complexity of the terminal.

[0194] Through the method of the present disclosure, a control method based on CI is defined for multiple PUSCH transmissions that estimate simultaneous channels, and uplink coverage can be improved through optimized simultaneous channel estimation. In describing the entire embodiment of the present disclosure, a method of applying CI to multiple PUSCH repetitive transmission type A that estimates simultaneous channels has been described as an example; however, this is merely for illustrative purposes and does not limit the scope of the present disclosure. It may be applied to PUSCH repetitive transmission type B that estimates simultaneous channels using a reference value in the above method, simultaneous channel estimation in PUSCH repetitive transmissions composed of different TBs, simultaneous channel estimation in TBoMS, etc.

[0195] [Method 2]

[0196] Method 2 describes the PUSCH transmission method and the dynamic SFI application method when dynamic SFI is set on multiple PUSCHs estimated to be simultaneous channels.

[0198] FIG. 13 illustrates an example of the operation of a terminal transmitting a PUSCH based on dynamic SFI settings to multiple PUSCHs estimated to be simultaneous channels in a wireless communication system according to various embodiments of the present disclosure.

[0199] FIG. 13 is a diagram illustrating the operation of a terminal transmitting PUSCH based on dynamic SFI settings for multiple PUSCHs estimated to be simultaneous channels in a 5G system.

[0200] Referring to FIG. 13, the terminal can receive a PUSCH repeat transmission setting from the base station via upper layer signaling or L1 signaling, and receive a bundle size = 4 slots as a setting value for performing simultaneous channel estimation (1301). In this case, simultaneous channel estimation is performed in Repe #1 to #4 based on the bundle size set for the PUSCH repeat transmission, and power consistency and phase continuity of the PUSCH repeat transmission Repe #1 to #4 can be maintained to perform simultaneous channel estimation. At this time, if a dynamic SFI (1302) is set through DCI format 2_0, Repe #3, which has an overlapping set dynamic SFI, can be canceled from transmission (1303). At this time, due to the PUSCH repeat transmission canceled by the set dynamic SFI, the phase continuity of Repe #1 to #2 and Repe #4 is not maintained. Therefore, P with different phases based on the same transmission power setting PUSCH,0 and P' PUSCH,0 Each is applied starting from this cancelled PUSCH transmission. Channel estimation for repeated PUSCH transmissions can be performed by simultaneous channel estimation (1304) in Repe #1 and #2, single channel estimation in Repe #4, and simultaneous channel estimation (1305) in bundle size units from Repe #5 onwards. The transmission power setting of Repe #4 configured above can be updated according to the setting and conditions (e.g., minimum processing time for applying the setting).

[0201] In addition, as in the above method, the terminal may receive a PUSCH repeat transmission from the base station via upper layer signaling or L1 signaling and receive a bundle size = 4 slots as a setting value for performing simultaneous channel estimation (1301). In this case, simultaneous channel estimation is performed in Repe #1 to #4 based on the bundle size set in the PUSCH repeat transmission, and power consistency and phase continuity of the PUSCH repeat transmission Repe #1 to #4 can be maintained to perform simultaneous channel estimation. At this time, if a dynamic SFI (1306) is set through DCI format 2_0, Repe #3, which has an overlapping dynamic SFI, can be canceled from transmission (1307). At this time, due to the PUSCH repeat transmission canceled by the set dynamic SFI, the phase continuity of Repe #1 to #2 and Repe #4 is not maintained. At this point, starting from the canceled PUSCH transmission of Repe#3, simultaneous channels can proceed starting from Repe#4, and transmission can be performed with the same transmission power based on the bundle size starting from Repe#4. Therefore, starting from Repe#3, the transmission power settings for Repe#1~#2 and Repe#4~#5 are P PUSCH,0 and P PUSCH,1 It can be set as such. Subsequently, the channel estimation for repeated PUSCH transmissions can be performed by simultaneous channel estimation (1309) in Repe#1 and #2, and by simultaneous channel estimation (1309) in bundle size units from Repe#4 onwards. In the above settings, a part of Repe#3 may not be used for simultaneous channel and PUSCH transmission depending on the settings and conditions in resource transmission.

[0202] Finally, if the terminal receives concurrent channel estimation through upper-layer signaling and L1 signaling, it can estimate concurrent channels for multiple PUSCH transmissions by ignoring dynamic SFI. In this case, operation is possible without implementing additional functions of the terminal, thereby improving the complexity of the terminal.

[0203] Through the method of the present disclosure, a control method based on dynamic SFI is defined for multiple PUSCH transmissions with simultaneous channel estimation, and uplink coverage improvement is possible through optimized simultaneous channel estimation. In describing the entire embodiment of the present disclosure, a method of applying dynamic SFI to multiple PUSCH repetitive transmission type A with simultaneous channel estimation has been described as an example; however, this is merely for illustrative purposes and does not limit the scope of the present disclosure. It may be applied to PUSCH repetitive transmission type B with simultaneous channel estimation using a reference value in the above method, simultaneous channel estimation in PUSCH repetitive transmissions composed of different TBs, simultaneous channel estimation in TBoMS, etc. Furthermore, in describing the entire embodiment of the present disclosure, dynamic SFI settings via DCI format 2_0 can be set across multiple slots and PUSCH transmissions.

[0204] [Method 3]

[0205] Method 3 describes a method for setting the priority of PUSCH transmissions and a method for PUSCH transmissions based on priority when multiple PUSCH transmissions are set up with simultaneous channel estimates.

[0206] From the base station, the terminal may receive configuration information for multiple PUSCH transmissions estimated for simultaneous channels through upper layer signaling or L1 signaling. At this time, the base station may set the priority of the multiple PUSCH transmissions estimated for simultaneous channels to a high priority = 1. In this case, if there is an overlap with a PUSCH / PUCCH transmission having a low priority, the PUSCH / PUCCH transmission having the low priority may not be transmitted. Through the above method, the reliability of multiple PUSCH transmissions estimated for simultaneous channels can be guaranteed, and the complexity of the terminal can be improved by enabling operation without the addition of additional terminal functions.

[0207] Based on the methods of the above embodiments (Methods 1 to 3), the terminal can cancel and transmit some of the multiple PUSCH transmissions

[0208] <Third Embodiment>

[0209] A third embodiment of the present disclosure may provide a control method for setting CI and dynamic slot-format indication (SFI) of a multi-slot PUSCH transmission (TBoMS) composed of one TB and a simultaneous channel estimated PUSCH transmission.

[0211] FIG. 14 is a flowchart illustrating the operation of a base station controlling CI and dynamic SFI in a multi-slot PUSCH transmission (TBoMS) composed of one TB and a simultaneous channel estimated PUSCH transmission in a wireless communication system according to various embodiments of the present disclosure.

[0212] Specifically, FIG. 14 is a flowchart illustrating the operation of a base station controlling CI and dynamic SFI in a multi-slot PUSCH transmission (TBoMS) composed of one TB and a simultaneous channel estimated PUSCH transmission according to various embodiments of the present disclosure.

[0213] A base station may transmit first configuration information for TB processing over multi-slot (TBoMS) or joint channel estimation via upper layer signaling or L1 signaling (1401). The first configuration information may include at least one of the position of a start symbol, the length of a symbol, the number of multi-slots, information on the time domain resource allocation type, and a bundling size for joint channel estimation. Subsequently, the base station may allocate actual transmittable resources for PUSCH transmission based on the configured first configuration information for TBoMS or joint channel estimation (1402). Subsequently, the base station may flexibly configure resources by transmitting second configuration information for CI or dynamic SFI to the terminal via upper layer signaling or L1 signaling (1403). Based on the second configuration information, the base station may determine whether to transmit the PUSCH resources to be transmitted (1404). The second setting information above is information regarding the priority of a PUSCH transmission resource, and transmission of the PUSCH transmission resource may be determined based on whether it overlaps with a PUSCH transmission resource having a different priority or a PUSCCH transmission resource having a different priority. Subsequently, based on the second setting information, at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission can be received from an actual transmission-available resource (1405). Subsequently, the base station can perform joint channel estimation and decoding for at least one of the received TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the set joint channel estimation setting information (1406).

[0215] FIG. 15 is a flowchart illustrating the operation of a terminal controlling CI and dynamic SFI in a multi-slot PUSCH transmission (TBoMS) composed of one TB and a simultaneous channel estimated PUSCH transmission in a wireless communication system according to various embodiments of the present disclosure.

[0216] Specifically, FIG. 15 is a flowchart illustrating the operation of a terminal controlling CI and dynamic slot-format indication (SFI) for a multi-slot PUSCH transmission (TBoMS) composed of one TB and a simultaneous channel estimated PUSCH transmission according to various embodiments of the present disclosure.

[0217] From the base station, the terminal may receive first configuration information for transmission block processing over multi-slot (TBBoMS) or joint channel estimation via upper layer signaling or L1 signaling (1501). The first configuration information may include at least one of the position of a start symbol, the length of a symbol, the number of multi-slots, information on the time domain resource allocation type, and a bundling size for joint channel estimation. Subsequently, the terminal may allocate actual transmittable resources for PUSCH transmission based on the first configuration information for TBoMS or joint channel estimation (1502). Subsequently, from the base station, the terminal may receive second configuration information for CI or dynamic SFI via upper layer signaling or L1 signaling and allocate resources (1503). The second setting information is information regarding the priority of a PUSCH transmission resource, and transmission status may be determined based on whether the PUSCH transmission resource overlaps with a PUSCH transmission resource having a different priority or a PUSCCH transmission resource having a different priority. The terminal can determine whether to transmit a PUSCH resource to be transmitted based on the second setting information (1504). Subsequently, the terminal can set the PUSCH transmission power to maintain consistency and phase continuity for at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the first setting information (1505). Subsequently, at least one of TBoMS transmission, PUSCH transmission, or PUSCH repeated transmission can be performed on an actual transmittable resource based on the first setting information (1506).

[0219] FIG. 16 is a block diagram of a terminal according to various embodiments of the present disclosure.

[0220] Referring to FIG. 16, the terminal (1600) may include a transceiver (1601), a control unit (processor) (1602), and a storage unit (memory) (1603). The transceiver (1601), control unit (1602), and storage unit (1603) of the terminal (1600) may operate according to an efficient channel and signal transmission and reception method in a 5G communication system corresponding to the above-described embodiment. However, the components of the terminal (1600) according to one embodiment are not limited to the above-described example. According to another embodiment, the terminal (1600) may include more components or fewer components than the above-described components. Furthermore, in certain cases, the transceiver (1601), control unit (1602), and storage unit (1603) may be implemented in the form of a single chip.

[0221] According to other embodiments, the transceiver (1601) may be composed of a transmitter and a receiver. The transceiver (1601) can transmit and receive signals with a base station. The signal may include control information and data. To this end, the transceiver (1601) may be composed of an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies a received signal and down-converts the frequency. Additionally, the transceiver (1601) may receive a signal through a wireless channel and output it to a control unit (1602), and transmit the signal output from the control unit (1602) through a wireless channel.

[0222] The control unit (1602) can control a series of processes that allow the terminal (1600) to operate according to the embodiments of the present disclosure described above. For example, the control unit (1602) can perform a method of changing the OFDM symbol position of the DMRS by considering a method of estimating the channel using DMRSs transmitted from a plurality of PUSCHs simultaneously according to the embodiments of the present disclosure. To this end, the control unit (1602) may include at least one processor. For example, the control unit (1602) may include a communication processor (CP) that performs control for communication and an application processor (AP) that controls upper layers such as application programs.

[0223] The storage unit (1603) can store control information or data, such as information related to channel estimation using DMRSs transmitted from a PUSCH included in a signal obtained from a terminal (1600), and may have an area for storing data required for control of the control unit (1602) and data generated during control by the control unit (1602). The storage unit (1703) may be composed of volatile memory, non-volatile memory, or a combination of volatile memory and non-volatile memory.

[0225] FIG. 17 is a block diagram of a base station according to various embodiments of the present disclosure.

[0226] Referring to FIG. 17, a base station (1700) may include a transceiver (1701), a control unit (processor) (1702), and a storage unit (memory) (1703). According to an efficient channel and signal transmission and reception method in a 5G communication system corresponding to the above-described embodiment, the transceiver (1701), the control unit (1702), and the storage unit (1703) of the base station (1700) may operate. However, the components of the base station (1700) according to one embodiment are not limited to the above-described example. According to another embodiment, the base station (1700) may include more components or fewer components than the above-described components. Furthermore, in certain cases, the transceiver (1701), the control unit (1702), and the storage unit (1703) may be implemented in the form of a single chip.

[0227] According to other embodiments, the transceiver (1701) may be composed of a transmitter and a receiver. The transceiver (1701) can transmit and receive signals with a terminal. The signal may include control information and data. To this end, the transceiver (1701) may be composed of an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies a received signal and down-converts the frequency. Additionally, the transceiver (1701) may receive a signal through a wireless channel and output it to a control unit (1702), and transmit the signal output from the control unit (1702) through a wireless channel.

[0228] The control unit (1702) can control a series of processes to enable the base station (1700) to operate according to the embodiments of the present disclosure described above. For example, the control unit (1702) can perform a method of changing the OFDM symbol position of the DMRS by considering a method of estimating the channel using DMRSs transmitted in a PUSCH according to the embodiments of the present disclosure. To this end, the control unit (1702) may include at least one processor. For example, the control unit (1702) may include a communication processor (CP) that performs control for communication and an application processor (AP) that controls upper layers such as applications.

[0229] The storage unit (1703) can store control information, data, such as information related to channel estimation, or control information and data received from a terminal using DMRSs transmitted in a PUSCH determined by the base station (1700), and may have an area for storing data required for control by the control unit (1702) and data generated during control by the control unit (1702). The storage unit (1703) may be composed of volatile memory, non-volatile memory, or a combination of volatile memory and non-volatile memory.

[0231] Methods according to the embodiments described in the claims or specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

[0232] When implemented in software, a computer-readable storage medium may be provided for storing one or more programs (software modules). One or more programs stored in the computer-readable storage medium are configured for execution by one or more processors within an electronic device. One or more programs include instructions that cause the electronic device to execute methods according to the embodiments described in the claims or specification of this disclosure.

[0233] Such programs (software modules, software) may be stored in random access memory, non-volatile memory including flash memory, read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic disc storage devices, compact disc-ROM (CD-ROM), digital versatile discs (DVDs), or other forms of optical storage devices, magnetic cassettes. Alternatively, they may be stored in memory composed of some or all of these. Additionally, each constituent memory may include multiple units.

[0234] Additionally, the program may be stored on an attachable storage device that can be accessed via a communication network such as the Internet, Intranet, LAN (local area network), WAN (wide area network), or SAN (storage area network), or a combination thereof. Such a storage device may be connected to a device performing an embodiment of the present disclosure through an external port. Additionally, a separate storage device on a communication network may be connected to a device performing an embodiment of the present disclosure.

[0235] In the specific embodiments of the present disclosure described above, the components included in the disclosure are expressed in a singular or plural form according to the specific embodiments presented. However, the singular or plural expression is selected to suit the situation presented for convenience of explanation, and the present disclosure is not limited to singular or plural components; even if a component is expressed in the plural form, it may be composed of a singular form, and even if a component is expressed in the singular form, it may be composed of a plural form.

[0236] Meanwhile, although specific embodiments have been described in the detailed description of the present disclosure, it is understood that various modifications are possible within the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be defined by the claims set forth below as well as equivalents thereof.

Claims

Claim 1 A method performed by a user equipment (UE) in a wireless communication system, comprising: receiving configuration information related to a physical uplink shared channel (PUSCH) repetition from a base station via upper layer signaling, wherein the configuration information is for transport block processing over multi-slot (TBoMS) and includes at least one of an index of a start symbol, the number of multiple slots, or a time domain resource allocation type; transmitting a first PUSCH for the PUSCH repetition to the base station based on the configuration information related to the PUSCH repetition; identifying that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, wherein the event is associated with the reception of downlink control information (DCI) including a cancellation indication (CI) or a dynamic slot format indication (SFI); and transmitting a second PUSCH for the PUSCH repetition to the base station after the event based on a bundling configuration included in the configuration information. Claim 2 A method according to claim 1, wherein the PUSCH repetition is stopped based on the event, the event further includes an overlap with a higher priority PUSCH transmission, the second PUSCH for the PUSCH repetition starts from the first symbol after the event, and the second PUSCH for the PUSCH repetition is transmitted based on the capability of the UE. Claim 3 delete Claim 4 delete Claim 5 A method performed by a base station in a wireless communication system, comprising: transmitting configuration information related to a physical uplink shared channel (PUSCH) repetition to a user equipment (UE) via upper layer signaling, wherein the configuration information is for transport block processing over multi-slot (TBoMS) and includes at least one of an index of a start symbol, the number of multiple slots, or a time domain resource allocation type; receiving a first PUSCH for the PUSCH repetition from the UE based on the configuration information related to the PUSCH repetition; identifying that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, wherein the event is associated with the transmission of downlink control information (DCI) including a cancellation indication (CI) or a dynamic slot format indication (SFI); and receiving a second PUSCH for the PUSCH repetition from the UE after the event based on a bundling configuration included in the configuration information. Claim 6 A method according to claim 5, wherein the PUSCH repetition is stopped based on the event, the event further includes an overlap with a higher priority PUSCH transmission, the second PUSCH for the PUSCH repetition starts from the first symbol after the event, and the second PUSCH for the PUSCH repetition is received based on the capability of the UE. Claim 7 delete Claim 8 delete Claim 9 In a user equipment (UE) of a wireless communication system, at least one transceiver; and at least one processor communicatively coupled to the at least one transceiver; and includes at least one memory that is communiquently coupled to the at least one processor and stores instructions, wherein the instructions are executed by the at least one processor individually or in any combination, and the UE receives configuration information related to a PUSCH (physical uplink shared channel) repetition from a base station via upper layer signaling, wherein the configuration information is for TBoMS (transport block processing over multi-slot) and includes at least one of an index of a start symbol, the number of multiple slots, or a time domain resource allocation type, transmits a first PUSCH for the PUSCH repetition to the base station based on the configuration information related to the PUSCH repetition, and identifies that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, wherein the event is associated with the reception of DCI (downlink control information) including a CI (cancellation indication) or a dynamic SFI (slot format indication), and, based on a bundling configuration included in the configuration information, after the event, the A UE that transmits a second PUSCH to the base station for PUSCH repetition. Claim 10 In paragraph 9, the PUSCH repetition is stopped based on the event, the event further includes an overlap with a higher priority PUSCH transmission, the second PUSCH for the PUSCH repetition starts from the first symbol after the event, and the second PUSCH for the PUSCH repetition is transmitted based on the capability of the UE. Claim 11 delete Claim 12 delete Claim 13 In a base station of a wireless communication system, at least one transceiver; and at least one processor communicatively coupled to the at least one transceiver; and includes at least one memory that is communiquently coupled to the at least one processor and stores instructions, wherein the instructions are executed by the at least one processor individually or in any combination, and the base station transmits configuration information related to a PUSCH (physical uplink shared channel) repetition to a UE (user equipment) via upper layer signaling, wherein the configuration information is for TBoMS (transport block processing over multi-slot) and includes at least one of an index of a start symbol, the number of multiple slots, or a time domain resource allocation type, receives a first PUSCH for the PUSCH repetition from the UE based on the configuration information related to the PUSCH repetition, and identifies that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, wherein the event is associated with the transmission of DCI (downlink control information) including a CI (cancellation indication) or a dynamic SFI (slot format indication), and based on a bundling configuration included in the configuration information, A base station that receives a second PUSCH from the UE for repeating the PUSCH after the above event. Claim 14 In paragraph 13, the PUSCH repetition is stopped based on the event, the event further includes an overlap with a higher priority PUSCH transmission, the second PUSCH for the PUSCH repetition starts from the first symbol after the event, and the second PUSCH for the PUSCH repetition is received based on the capability of the UE, base station. Claim 15 delete Claim 16 delete Claim 17 delete Claim 18 delete Claim 19 delete Claim 20 delete

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