Method and apparatus for transmitting an uplink channel in a wireless communication system - Patents.com

Abstract

This disclosure relates to 4G (4G) such as LTE (Long Term Evolution). th 5G (5th Generation) communication systems to support higher data transmission rates th According to an embodiment of the present disclosure, a method for operating a terminal in a wireless communication system is provided. The method includes: receiving first setting information for transmission block processing over multi-slot (TBoMS) or simultaneous channel setting from a base station; allocating a physical uplink shared channel (PUSCH) transmission resource based on the first setting information; receiving second setting information for a cancellation indication (CI) or a dynamic slot-format indication (SFI) from the base station; determining whether to transmit the PUSCH transmission resource based on the second setting information; setting a transmission power and a phase for TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission based on the first setting information; and performing at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission based on the PUSCH transmission resource.

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates generally to wireless communication systems, and more particularly to a method and apparatus for transmitting an uplink channel in a wireless communication system. [Background technology]

[0002] 4G(4 th Since the commercialization of the 5G (5G) communication system, improved 5G (5G) has been developed to meet the increasing demand for wireless data traffic. th Efforts are being made to develop 5G (Next Generation) or pre-5G communication systems. For this reason, 5G or pre-5G communication systems are referred to as Beyond 4G Network communication systems or Post-LTE (Long Term Evolution) systems.

[0003] The implementation of the 5G communication system in the ultra-high frequency (mmWave) band (e.g., 60 GHz band, etc.) is being considered. In order to mitigate the path loss of radio waves in the ultra-high frequency band and increase the transmission distance of radio waves, beamforming, massive MIMO, full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, and large scale antenna technologies are being discussed in the 5G communication system.

[0004] In addition, to improve the system network, technologies being developed for the 5G communication system include advanced small cells, improved small cells, cloud radio access networks (cloud RAN), ultra-dense networks, device to device communication (D2D), wireless backhaul, moving networks, cooperative communication, CoMP (Coordinated Multi-Points), and interference cancellation.

[0005] In addition, the 5G system includes 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).

[0006] Recently, with the development of 5G communication systems, the need for a method to repeatedly transmit uplinks to extend cell coverage in ultra-high frequency (mmWave) bands has emerged.

[0007] The preceding information is provided solely as background information to aid in the understanding of the present disclosure. No determination has been made, and no assertion is being made, as to the applicability of any of the preceding content as prior art with respect to the present disclosure. Summary of the Invention [Means for solving the problem]

[0008] Aspects of the present disclosure address at least the problems and / or shortcomings noted above and provide at least the advantages described below.Accordingly, one aspect of the present disclosure provides a method and apparatus for transmitting an uplink channel in a wireless communication system.

[0009] Additional aspects will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the presented embodiments.

[0010] According to various embodiments of the present disclosure, a method for operating a terminal in a wireless communication system is provided, the method including: receiving first configuration information for TB processing over multi-slot (TBoMS) or simultaneous channel configuration from a base station, allocating a physical uplink shared channel (PUSCH) transmission resource based on the first configuration information, receiving second configuration information for a cancellation indication (CI) or a dynamic slot-format indication (SFI) from the base station, determining whether to transmit on the PUSCH transmission resource based on the second configuration information, setting a transmission power and a phase for TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission based on the first configuration information, and performing at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission based on the PUSCH transmission resource.

[0011] According to various embodiments of the present disclosure, a method for operating a base station in a wireless communication system is provided, the method including: transmitting first configuration information for TB processing over multi-slot (TBoMS) or joint channel configuration to a terminal; allocating a physical uplink shared channel (PUSCH) transmission resource based on the first configuration information; transmitting second configuration information for a cancellation indication (CI) or a dynamic slot-format indication (SFI) to the terminal; determining whether to transmit on 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 on at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission based on the PUSCH transmission resource based on the first configuration information.

[0012] According to various embodiments of the present disclosure, a terminal in a wireless communication system is provided, the terminal including a transceiver and at least one processor, the at least one processor is configured to receive first setting information for TB processing over multi-slot (TBoMS) or simultaneous channel setting from a base station, allocate a physical uplink shared channel (PUSCH) transmission resource according to the first setting information, receive second setting information for a cancellation indication (CI) or a dynamic slot-format indication (SFI) from the base station, determine whether to transmit on the PUSCH transmission resource according to the second setting information, set a transmission power and a phase for TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission according to the first setting information, and perform at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission according to the PUSCH transmission resource.

[0013] According to various embodiments of the present disclosure, a base station in a wireless communication system is provided, the base station including a transceiver and at least one processor, the at least one processor is configured to: transmit first setting information for transmission block processing over multi-slot (TBoMS) or joint channel setting to a terminal, allocate a physical uplink shared channel (PUSCH) transmission resource based on the first setting information, transmit second setting information for a cancellation indication (CI) or a dynamic slot-format indication (SFI) to the terminal, determine whether or not to transmit on the PUSCH transmission resource based on the second setting information, receive at least one of a TBoMS PUSCH transmission, a PUSCH transmission, or a PUSCH repeat transmission based on the PUSCH transmission resource, and perform joint channel estimation and decoding on at least one of a TBoMS PUSCH transmission, a PUSCH transmission, or a PUSCH repeat transmission based on the PUSCH transmission resource based on the first setting information.

[0014] Other aspects, advantages and distinguishing features of the present invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the invention. Effect of the Invention

[0015] Various embodiments of the present disclosure provide methods and apparatus for transmitting an uplink channel in a wireless communication system.

[0016] The effects obtained by the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains from the following description. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 illustrates a wireless communication system in accordance with various embodiments of the present disclosure. [Figure 2A] 1 is a diagram showing the basic structure of a time-frequency domain, which is a radio resource domain in which data or control channels are transmitted, in a wireless communication system according to one embodiment of the present disclosure. [Figure 2B] FIG. 2 illustrates a slot structure in a wireless communication system according to one embodiment of the present disclosure. [Diagram 3] 1 is a diagram showing a DMRS pattern used for communication between a base station and a terminal in a wireless communication system according to one embodiment of the present disclosure. [Figure 4] FIG. 11 is a diagram illustrating an example of channel estimation using a DMRS received on one PUSCH in a time band in a wireless communication system according to an embodiment of the present disclosure. [Diagram 5] 1 is a diagram illustrating an example of simultaneous channel estimation using DMRSs received on a plurality of PUSCHs in a time band in a wireless communication system according to an embodiment of the present disclosure. [Figure 6] FIG. 11 is a diagram illustrating an example of PUSCH repeat transmission type B in a wireless communication system according to an embodiment of the present disclosure. [Figure 7] 1 is a diagram showing an example of a process in which a transmission block is divided into a plurality of code blocks and a CRC is added in a wireless communication system according to an embodiment of the present disclosure. [Figure 8] A figure showing an example of PUSCH transmission / repeated transmission using CI, SFI settings and PUSCH / PUCCH overlap in a wireless communication system according to one embodiment of the present disclosure. [Figure 9] FIG. 2 is a diagram illustrating an example of TBoMS PUSCH transmission in a wireless communication system according to an embodiment of the present disclosure. [Figure 10] FIG. 11 is a diagram illustrating an example of an operation of a terminal that performs PUSCH transmission based on a CI setting for multi-slot PUSCH transmission (TBoMS) configured with one TB in a wireless communication system according to an embodiment of the present disclosure. [Figure 11]FIG. 11 is a diagram illustrating an example of an operation of a terminal that performs PUSCH transmission based on a CI setting for multi-slot PUSCH transmission (TBoMS) configured with one TB in a wireless communication system according to an embodiment of the present disclosure. [Figure 12] FIG. 11 is a diagram illustrating an example of an operation of a terminal that performs PUSCH transmission based on a CI setting for multiplexed PUSCHs in which simultaneous channel estimation is performed in a wireless communication system according to an embodiment of the present disclosure. [Figure 13] 11 is a diagram illustrating an example of an operation of a terminal that performs PUSCH transmission based on dynamic SFI setting for multiple PUSCHs in which simultaneous channel estimation is performed in a wireless communication system according to an embodiment of the present disclosure. FIG. [Figure 14] 11 is a flowchart illustrating an operation of a base station that controls a CI and a dynamic SFI for multi-slot PUSCH transmission (TBoMS) configured with one TB and PUSCH transmission in which simultaneous channel estimation is performed in a wireless communication system according to an embodiment of the present disclosure. [Figure 15] 11 is a flowchart illustrating an operation of a terminal that controls a CI and a dynamic SFI for multi-slot PUSCH transmission (TBoMS) configured with one TB and PUSCH transmission in which simultaneous channel estimation is performed in a wireless communication system according to an embodiment of the present disclosure. [Figure 16] FIG. 2 is a block diagram of a terminal according to one embodiment of the present disclosure. [Figure 17] FIG. 2 is a block diagram of a base station according to one embodiment of the present disclosure.

[0018] It should be noted that throughout the drawings, the same reference numbers are used to depict the same or similar elements, features and structures. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The following description, with reference to the accompanying drawings, is provided to aid in a comprehensive understanding of various embodiments of the present disclosure defined by the claims and their equivalents. Various specific details are included herein to aid in understanding, but these should be considered merely as examples. Therefore, those skilled in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, for the sake of clarity and conciseness, descriptions of well-known functions and configurations may be omitted.

[0020] The terms and words used in the following description and claims are not limited to their bibliographical meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present invention. Therefore, it should be clear to those skilled in the art that the following description of various embodiments of the present invention is provided for illustrative purposes only, and is not intended to limit the present invention as defined by the appended claims and their equivalents.

[0021] The singular forms "a," "an," and "the" should be understood to include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to a "component surface" includes reference to one or more of such surfaces.

[0022] In the various embodiments of the present disclosure described below, a hardware approach is described as an example, but the various embodiments of the present disclosure include techniques that use both hardware and software, and therefore the various embodiments of the present disclosure do not exclude a software-based approach.

[0023] Hereinafter, the embodiments of the present disclosure will be described in detail with the accompanying drawings. Hereinafter, the present disclosure will be described with respect to an embodiment for improving coverage for PUSCH (physical uplink shared channel) transmission, but the present disclosure is not limited to each embodiment and may be applied to a frequency resource configuration method corresponding to another channel by using a combination of one or more embodiments proposed in the present disclosure in whole or in part. Therefore, the embodiments of the present disclosure may be applied with some modifications based on the judgment of a person skilled in the art without departing from the scope of the present disclosure.

[0024] In addition, when describing the present disclosure, if it is determined that a specific description of a well-known function or configuration may unnecessarily obscure the gist of the present disclosure, the detailed description will be omitted. The terms described below are defined in consideration of the functions in the present disclosure, and may differ depending on the intention or practice of the user or operator. Therefore, the definition should be based on the contents of this specification as a whole.

[0025] Wireless communication systems have evolved from the early days of providing voice-centric services to broadband wireless communication systems providing high-speed, high-quality packet data services, such as communication standards such as 3GPP (3rd generation partnership project) high speed packet access (HSPA), LTE (long term evolution or E-UTRA (evolved universal terrestrial radio access)), LTE-Advanced (LTE-A), LTE-Pro, 3GPP2 (3rd generation partnership project) high rate packet data (HRPD), UMB (ultra mobile broadband), and IEEE (institute of electrical and electronics engineers) 802.17e.

[0026] In the LTE system, which is a representative example of a broadband wireless communication system, an orthogonal frequency division multiplexing (OFDM) scheme is adopted in the downlink (DL), and a single carrier frequency division multiple access (SC-FDMA) scheme is adopted in the uplink (UL). The uplink refers to a radio 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 radio link through which a base station transmits data or control signals to a terminal. In addition, the above-mentioned multiple access scheme generally allocates and operates time-frequency resources carrying data or control information for each user so that they do not overlap with each other, i.e., so that orthogonality is established, thereby separating the data or control information of each user.

[0027] The 5G communication system, which is the next generation of LTE, must support services that simultaneously satisfy various requirements so that they can be freely reflected by users and service providers. Services being considered for the 5G communication system include enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC).

[0028] eMBB aims to provide a data communication speed higher than that 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 a peak data rate of 10 Gbps in the uplink from the perspective of one base station. In addition, the 5G communication system must provide an increased user perceived data rate while providing a peak data rate. In order to meet these requirements, various improvements in transmission and reception technologies may be required, including improved multi-antenna (multi input multi output, MIMO) transmission technology. In addition, while the LTE system transmits signals using a transmission bandwidth of up to 20 MHz in the 2 GHz band, the 5G communication system can satisfy the data communication speed required in the 5G communication system by using a frequency bandwidth wider than 20 MHz in the frequency band of 3 to 6 GHz or above 6 GHz.

[0029] At the same time, mMTC is being considered to support application services such as the Internet of Things (IoT) in 5G communication systems. In order to efficiently provide the Internet of Things, mMTC requires support for large-scale terminal connection within a cell, improved terminal coverage, improved battery life, and reduced terminal costs. The Internet of Things provides communication functions by being attached to various sensors and various devices, so a large number of terminals (e.g., 1,000,000 terminals / km2) must be supported within a cell. In addition, because terminals supporting mMTC are likely to be located in shadow areas that cannot be covered by cells, such as underground buildings, due to the nature of the service, they require wider coverage than other services provided by 5G communication systems. Terminals supporting mMTC must be low-cost terminals and have a very long battery life of 10 to 16 years because it is difficult to frequently replace the terminal battery.

[0030] Finally, URLLC is a cellular-based wireless communication service used for a mission-critical purpose. For example, services used for remote control of robots or machinery, industrial automation, unmanned aerial vehicles, remote health care, emergency alerts, etc. can be considered. Therefore, the communication provided by URLLC must provide extremely low latency and extremely high reliability. For example, a service supporting URLLC must satisfy an air interface latency of less than 0.5 milliseconds and at the same time, must satisfy the requirement of a packet error rate of 10-5 or less. Therefore, for a service supporting URLLC, the 5G system must provide a shorter transmit time interval (TTI) than other services and at the same time, must allocate wide resources in the frequency band to ensure the reliability of the communication link.

[0031] Three services of a 5G communication system (hereinafter, may be referred to as a 5G system), i.e., eMBB, URLLC, and mMTC, may be multiplexed and transmitted in one system. In this case, different transmission and reception techniques and transmission and reception parameters may be used between the services to meet different requirements of each service.

[0032] In the following description, terms referring to signals, channels, control information, network entities, and device components are provided as examples for convenience of description. Therefore, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may be used.

[0033] In addition, the present disclosure describes various embodiments using terms used in some communication standards (e.g., 3GPP (3rd Generation Partnership Project)), but this is merely an example for the purpose of explanation. Various embodiments of the present disclosure can be easily modified and applied to other communication systems.

[0034] 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 some of the nodes that use wireless channels in the wireless communication system. Although FIG 1 illustrates only one base station, other base stations identical or similar to the base station 100 may be further included.

[0035] The base station 100 is a network infrastructure that provides wireless connectivity to the terminals 120 and 130. The base station 100 has a coverage that is defined as a predetermined geographical area based on the distance over which a signal can be transmitted. The base station 100 may be an "access point (AP)", "eNodeB (eNB)", "5G node (5G)", "5G network ... th In this regard, the wireless point may be referred to as a "next generation nodeB (gNB)," "wireless point," "transmission / reception point (TRP)," or other terms having an equivalent technical meaning.

[0036] Each of the terminals 120 and 130 is a device used by a user and communicates with the base station 100 via a wireless channel. In some cases, at least one of the terminals 120 and 130 may be operated without the involvement of a user. That is, at least one of the terminals 120 and 130 may be a device that performs machine type communication (MTC) and may not be carried by a user. Each of the terminals 120 and 130 may be referred to as a "user equipment (UE)", a "mobile station", a "subscriber station", a "remote terminal", a "wireless terminal", or a "user device" or other terms having an equivalent technical meaning, in addition to a terminal.

[0037] The base station 100, the terminal 120, and the terminal 130 can transmit and receive radio signals in the millimeter wave (mmWave) band (e.g., 28 GHz, 30 GHz, 38 GHz, and 60 GHz). In this case, the base station 100, the terminal 120, and the terminal 130 can perform beamforming to improve channel gain. Here, beamforming can include transmit beamforming and receive beamforming. That is, the base station 100, the terminal 120, and the terminal 130 can provide directivity to a transmit signal or a receive signal. To this end, the base station 100 and the terminals 120 and 130 can select serving beams 112, 113, 121, and 131 through a beam search or beam management procedure. After the serving beam 112, 113, 121, 131 is selected, subsequent communications may be conducted via resources that are in a quasi co-located (QCL) relationship with the resources that transmitted the serving beam 112, 113, 121, 131.

[0038] A first antenna port and a second antenna port may be said to be in a QCL relationship if the large-scale characteristics of the channel carrying symbols on the first antenna port can be inferred from the channel carrying symbols on the second antenna port. 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.

[0039] FIG. 2A illustrates a basic structure of a time-frequency domain, which is a radio resource domain in which data or control channels are transmitted, in a wireless communication system according to one embodiment of the present disclosure.

[0040] Specifically, FIG. 2A is a diagram showing the basic structure of a time-frequency domain, which is a radio resource domain of a 5G system.

[0041] In FIG. 2A, the horizontal axis indicates the time domain, and the vertical axis indicates the frequency domain. In the time and frequency domains, the basic unit of a resource is a resource element (RE) 101, which may be defined by one orthogonal frequency division multiplexing (OFDM) 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, (e.g., 12) consecutive REs may constitute one resource block (RB) 104. In addition, in the time domain,

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[0042] FIG. 2B illustrates a slot structure in a wireless communication system according to one embodiment of the present disclosure.

[0043] Specifically, FIG. 2B is a diagram showing a slot structure considered in a 5G system.

[0044] 2B illustrates an example of a frame 200, subframe 201, and slot 202 structure. One frame 200 may be defined as 10 ms. One subframe 201 may be defined as 1 ms, and therefore one frame 200 may be composed of a total of 10 subframes 201. Also, one slot 202, 203 may be defined as 14 OFDM symbols.

number

[0045] In the embodiment of Fig. 2, slot structures are shown for the subcarrier spacing setting value 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, the number of slots per subframe is determined by the setting value μ for the subcarrier spacing.

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[0046] [Table 1]

[0047] Next, we will explain in detail about DMRS (demodulation reference signal), which is one of the reference signals in the 5G system.

[0048] A DMRS may consist of multiple DMRS ports, and each port maintains orthogonality using CDM (code division multiplexing) or FDM (frequency division multiplexing) so as not to cause interference with each other. However, the term for DMRS may be expressed by other terms depending on the user's intention and the purpose of using the reference signal. More specifically, the term DMRS is merely a specific example presented to easily explain the technical content of the present disclosure and to facilitate understanding of the present disclosure, and is not intended to limit the scope of the present disclosure. That is, it is obvious to a person having ordinary skill in the art to which the present disclosure pertains that a reference signal based on the technical idea of ​​the present disclosure can also be implemented.

[0049] FIG. 3 illustrates a DMRS pattern used for communication between a base station and a terminal in a wireless communication system according to an embodiment of the present disclosure.

[0050] Specifically, Figure 3 illustrates DMRS patterns (type 1 and type 2) used for communication between a base station and a terminal in a 5G system.

[0051] Two DMRS patterns may be supported in a 5G system. The two DMRS patterns are specifically shown in Figure 3. Referring to Figure 3, a first symbol pattern 301 and a second symbol pattern 302 indicate DMRS type 1. The first symbol pattern 301 and the second symbol pattern 302 of DMRS type 1 in Figure 3 are DMRS patterns of a combination 2 structure, and may be composed of two CDM groups, and different CDM groups may be frequency dimension multiplexed (FDM).

[0052] In the first symbol pattern 301 of Fig. 3, CDM on frequency is applied to the same CDM group, so that two DMRS ports can be distinguished, and therefore a total of four orthogonal DMRS ports can be set. The first symbol pattern 301 of Fig. 3 shows the DMRS port IDs mapped to each CDM group (in the case of downlink, the DMRS port IDs are displayed by adding +1000 to the numbers shown). In the second symbol pattern 302 of Fig. 3, CDM on time / frequency is applied to the same CDM group, so that four DMRS ports can be distinguished, and therefore a total of eight orthogonal DMRX ports can be set. The second symbol pattern 302 of Fig. 3 shows the DMRS port IDs mapped to each CDM group (in the case of downlink, the DMRS port IDs are displayed by adding +1000 to the numbers shown).

[0053] DMRS type 2 of the first symbol pattern 303 and the second symbol pattern 304 in FIG. 3 is a DMRS pattern having a structure in which FD-OCC (frequency domain orthogonal cover codes) are applied to adjacent subcarriers in frequency, and can be composed of three CDM groups, and different CDM groups can be FDMed.

[0054] In the first symbol pattern 303 of Fig. 3, CDM on frequency is applied to the same CDM group, so that two DMRS ports can be distinguished, and therefore, a total of six orthogonal DMRS ports can be configured. The first symbol pattern 303 of Fig. 3 shows the DMRS port IDs mapped to each CDM group (in the case of downlink, the DMRS port IDs are displayed by adding +1000 to the numbers shown). In the second symbol pattern 304 of Fig. 3, CDM on time / frequency is applied to the same CDM group, so that four DMRS ports can be distinguished, and therefore, a total of 12 orthogonal DMRS ports can be configured. The second symbol pattern 304 of Fig. 3 shows the DMRS port IDs mapped to each CDM group (in the case of downlink, the DMRS port IDs are displayed by adding +1000 to the numbers shown).

[0055] As described above, in the NR system, two different DMRS patterns, for example, DMRS type 1 of the first symbol pattern 301 and the second symbol pattern 302, or DMRS type 2 of the first symbol pattern 303 and the second symbol pattern 304 in FIG. 3, may be configured. Also, whether the DMRS pattern is the first symbol pattern 301, 303 or the adjacent second symbol pattern 302, 304 may be configured. Also, in the NR system, not only the DMRS port number is scheduled, but also the number of CDM groups scheduled together for PDSCH rate matching (physical downlink shared channel rate matching) may be configured and signaled. Also, in the case of cyclic prefix based orthogonal frequency division multiplex (CP-OFDM), both of the two DMRS patterns described above may be supported in DL and UL, and in the case of discrete Fourier transform spread OFDM (DFT-S-OFDM), only DMRS type 1 of the DMRS patterns described above may be supported in UL. In addition, additional DMRS may be supported as configurable. Front-loaded DMRS refers to the first DMRS located in the first symbol in time, and additional DMRS refers to the DMRS located in the symbols after the front-loaded DMRS. In an NR system, the number of additional DMRS may be set from a minimum of 0 to a maximum of 3. Also, when a DMRS is configured, it may be assumed to follow the same pattern as the front-loaded DMRS.More specifically, when information regarding whether the DMRS pattern type described above for a front-loaded DMRS is Type 1 or Type 2, information regarding whether the DMRS pattern is a first symbol pattern or an adjacent second symbol pattern, and information regarding the DMRS port and the number of CDM groups used are indicated, if an additional DMRS is additionally configured, it can be assumed that the additional DMRS is configured with the same DMRS information as the front-loaded DMRS.

[0056] More specifically, the downlink DMRS configuration described above may be configured by RRC signaling as shown in Table 2 below.

[0057] [Table 2]

[0058] In addition, the uplink DMRS configuration described above can be configured by RRC signaling as shown in Table 3 below.

[0059] [Table 3] FIG. 4 illustrates an example of channel estimation using a DMRS received on one PUSCH in a time band in a wireless communication system according to an embodiment of the present disclosure.

[0060] Specifically, FIG. 4 is a diagram illustrating an example of channel estimation using a DMRS received on one PUSCH in a time band in a 5G system.

[0061] When performing channel estimation for data decoding using the above-mentioned DMRS, in the frequency band, channel estimation may be performed within a precoding resource block group (PRG), which is a corresponding bundling unit, using physical resource block bundling (PRB bundling) linked to the system band. Also, in the time unit, channel estimation is performed assuming that only the DMRS received in one PUSCH has the same precoding.

[0062] FIG. 5 illustrates an example of joint channel estimation using DMRSs received on a plurality of PUSCHs in a time band in a wireless communication system according to an embodiment of the present disclosure.

[0063] Specifically, FIG. 5 is a diagram illustrating an example of joint channel estimation using DMRSs received on multiple PUSCHs in a time band of a 5G system to which an embodiment of the present disclosure can be applied.

[0064] The base station can instruct the terminal whether to use the same precoding through configuration, and the base station can use this to estimate the channel using both DMRS transmissions using the same precoding, thereby improving DMRS channel estimation performance.

[0065] As in the embodiment of FIG. 4, in the embodiment of FIG. 5, in channel estimation for data decoding using the DMRS, in the frequency band, channel estimation may be performed within a precoding resource block group (PRG), which is a corresponding bundling unit, using PRB bundling linked to the system band. In addition, channel estimation is performed assuming that only DMRSs received in one or more PUSCHs in a time unit have the same precoding. As a result, channel estimation is possible based on multiple DMRSs in a time band, so that channel estimation performance can be improved. In particular, in order to improve coverage, channel estimation performance may be very important because channel estimation performance can become a bottleneck even if data decoding performance is good.

[0066] A method for allocating time domain resources for data channels in a 5G communication system will now be described. A base station can set a table for time domain resource allocation information for a downlink data channel (physical downlink shared channel, PDSCH) and an uplink data channel (physical uplink shared channel, PUSCH) in a terminal through higher layer signaling (e.g., RRC signaling).

[0067] The base station may set a table with a maximum of maxNrofDL-Allocations=17 entries for the PDSCH, and may set a table with a maximum of maxNrofUL-Allocations=17 entries for the PUSCH. The time domain resource allocation information may include, for example, PDCCH-to-PDSCH slot timing (corresponding to a slot-unit time interval between a time when the PDCCH is received and a 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 a time when the PDCCH is received and a time when the PUSCH scheduled by the received PDCCH is transmitted, denoted as K2), information on the position and length of a start symbol in which the PDSCH or PUSCH is scheduled in a slot, a mapping type of the PDSCH or PUSCH, etc. For example, the time domain resource allocation information for the PDSCH may be set in the terminal by an RRC signal as shown in the following [Table 4].

[0068] [Table 4]

[0069] Furthermore, for example, time domain resource allocation information for the PUSCH may be configured in the UE by an RRC signal as shown in Table 5 below.

[0070] [Table 5]

[0071] The base station may transmit one of the table entries for the time domain resource allocation information to the terminal by L1 signaling (e.g., downlink control information (DCI)). For example, the base station may indicate one of the table entries for the time domain resource allocation information in a 'Time Domain Resource Allocation' field in the DCI. The terminal may acquire the time domain resource allocation information for the PDSCH or PUSCH based on the DCI received from the base station.

[0072] The following is a detailed description of an uplink data channel (physical uplink shared channel, PUSCH) transmission in a 5G system. PUSCH transmission can be dynamically scheduled by a UL grant in DCI or can operate according to configured grant Type 1 or configured grant Type 2. Dynamic scheduling for PUSCH transmission can be indicated, for example, by DCI format 0_0 or 0_1.

[0073] Configured grant Type 1 PUSCH transmissions do not receive UL grants in DCI, and may be semi-statically configured by receiving configuredGrantConfig including rrc-ConfiguredUplinkGrant in Table 6 via higher level signaling. Configured grant Type 2 PUSCH transmissions may be semi-continuously scheduled by UL grants in DCI after receiving configuredGrantConfig not including rrc-ConfiguredUplinkGrant in Table 6 via higher level signaling. When PUSCH transmission operates according to a configured grant, the parameters applied to PUSCH transmission may be applied by configuredGrantConfig, which is the higher-level signaling of [Table 6], except for certain parameters (e.g., dataScramblingIdentityPUSCH, txConfig, codebookSubset, maxRank, scaling of UCI-OnPUSCH, etc.) provided in pusch-Config, which is the higher-level signaling of [Table 7]. For example, if the terminal is provided with transformPrecoder in configuredGrantConfig, which is the higher-level signaling of [Table 6], the terminal may apply tp-pi2BPSK in pusch-Config, which is the higher-level signaling of [Table 7], to PUSCH transmission operated according to a configured grant.

[0074] [Table 6]

[0075] Next, the PUSCH transmission method will be described. The DMRS antenna port for PUSCH transmission may be the same as the antenna port for SRS transmission. PUSCH transmission can follow a codebook-based transmission method or a non-codebook-based transmission method depending on whether the value of txConfig in pusch-Config in higher signaling [Table 7] is 'codebook' or 'non-codebook'. As described above, PUSCH transmission can be dynamically scheduled by DCI format 0_0 or 0_1, or semi-statically configured by a configured grant.

[0076] If the terminal is instructed to schedule PUSCH transmission by DCI format0_0, the terminal may perform beam configuration for PUSCH transmission using pucch-spatialRelationInfoID corresponding to a UE-specific (dedicated) PUCCH resource having the lowest ID in an activated uplink bandwidth part (BWP) in a serving cell. In this case, PUSCH transmission may be performed based on a single antenna port. The terminal may not expect scheduling for PUSCH transmission by DCI format0_0 in a BWP in which a PUCCH resource including pucch-spatialRelationInfo is not configured. If the terminal does not configure txConfig in pusch-Config in [Table 7], the terminal may not expect to be scheduled with DCI format 0_1.

[0077] [Table 7]

[0078] Next, a description will be given of a PUSCH transmission based on a codebook. A PUSCH transmission based on a codebook can be dynamically scheduled by DCI format 0_0 or 0_1, and can be operated semi-statically by a configured grant. When dynamically scheduled by a PUSCH DCI format 0_1 ​​based on a codebook, or semi-statically configured by a configured grant, a terminal can determine a precoder for PUSCH transmission based on an SRS resource indicator (SRI), a transmission precoding matrix indicator (TPMI), and a transmission rank (i.e., the number of PUSCH transmission layers).

[0079] In this case, the SRI may be given by a field SRS resource indicator in the DCI or may be set by srs-ResourceIndicator, which is higher-level signaling. The terminal may be configured with at least one SRS resource when transmitting a PUSCH based on a codebook, and may be configured with up to two SRS resources, for example. When the terminal is provided with an SRI by the DCI, the SRS resource indicated by the corresponding SRI may refer to an SRS resource corresponding to the SRI among SRS resources transmitted before the PDCCH including the corresponding SRI. In addition, the TPMI and transmission rank may be given by a field precoding information and number of layers in the DCI, or may be set by precodingAndNumberOfLayers, which is higher-level signaling. The TPMI may be used to indicate a precoder applied to PUSCH transmission.

[0080] The precoder used for PUSCH transmission may be selected from an uplink codebook having the same number of antenna ports as the nrofSRS-Ports value in the higher-level signaling SRS-Config. In codebook-based PUSCH transmission, the terminal may determine a codebook subset based on the TPMI and codebookSubset in the higher-level signaling pusch-Config. In this case, the codebookSubset in the higher-level signaling pusch-Config may be set to one of 'fullyAndPartialAndNonCoherent', 'partialAndNonCoherent', or 'nonCoherent' based on the UE capability reported by the terminal to the base station.

[0081] If the terminal reports 'partialAndNonCoherent' in the UE capability, the terminal shall not expect the value of codebookSubset, which is higher level signaling, to be set to 'fullyAndPartialAndNonCoherent'. Also, if the terminal reports 'nonCoherent' in the UE capability, the terminal shall not expect the value of codebookSubset, which is higher level signaling, to be set to 'fullyAndPartialAndNonCoherent' or 'partialAndNonCoherent'. If nrofSRS-Ports in the SRS-ResourceSet, which is higher level signaling, indicates two SRS antenna ports, the terminal shall not expect the value of codebookSubset, which is higher level signaling, to be set to 'partialAndNonCoherent'.

[0082] The UE can be configured with one SRS resource set in which the usage value in the higher level signaling SRS-ResourceSet is set to 'codebook', and one SRS resource in the corresponding SRS resource set can be indicated by the SRI. If multiple SRS resources are configured in an SRS resource set in which the usage value in the higher level signaling SRS-ResourceSet is set to 'codebook', the UE can expect that the value of nrofSRS-Ports in the higher level signaling SRS-Resource is set to the same value for all SRS resources.

[0083] The terminal transmits one or more SRS resources included in an SRS resource set, whose usage value is set to 'codebook', to the base station through higher-level signaling, and the base station can select one of the SRS resources transmitted by the terminal and instruct the terminal to transmit a PUSCH using transmission beam information of the corresponding SRS resource. In this case, in the PUSCH transmission based on the codebook, the SRI is used as information for selecting an index of one SRS resource and can be included in the DCI. Furthermore, the base station can transmit information indicating the TPMI and rank used by the terminal for PUSCH transmission by including it in the DCI. The terminal can transmit a PUSCH by applying a precoder indicated by the TPMI and rank indicated based on the transmission beam of the corresponding SRS resource using the SRS resource indicated by the SRI.

[0084] Next, non-codebook-based PUSCH transmission will be described. Non-codebook-based PUSCH transmission can be dynamically scheduled by DCI format 0_0 or 0_1, or can operate semi-statically by a configured grant. If at least one SRS resource is configured in an SRS resource set in which a usage value in SRS-ResourceSet, which is higher-level signaling, is set to 'nonCodebook', the terminal can be scheduled for non-codebook-based PUSCH transmission by DCI format 0_1.

[0085] For an SRS resource set in which the usage value in the higher-level signaling SRS-ResourceSet is set to 'nonCodebook', the terminal may be configured with 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 configured in association with the SRS resource set. If the difference between the last received symbol of an aperiodic NZP CSI-RS resource associated with the SRS resource set and the first symbol of an aperiodic SRS transmission in the terminal is less than a certain symbol (e.g., 42 symbols), the terminal may not expect information about a precoder for SRS transmission to be updated.

[0086] When the value of resourceType in SRS-ResourceSet, which is higher level signaling, is set to 'aperiodic', the NZP CSI-RS associated with the SRS-ResourceSet can be indicated by the SRS request, which is a 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 aperiodic 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 corresponding DCI does not indicate cross carrier or cross BWP scheduling. Also, if the value of the SRS request indicates the existence of the NZP CSI-RS, the corresponding NZP CSI-RS may be located in a slot in which a PDCCH including the SRS request field is transmitted. At this time, the TCI state set for the scheduled subcarriers may not be set to QCL-TypeD.

[0087] If a periodic or semi-static SRS resource set is configured, the NZP CSI-RS associated with the SRS resource set may be indicated by associatedCSI-RS in higher level signaling SRS-ResourceSet. For non-codebook-based transmission, the UE may not expect that higher level signaling spatialRelationInfo for SRS resources and associatedCSI-RS in higher level signaling SRS-ResourceSet are both configured.

[0088] When a plurality of SRS resources are configured, the terminal can 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 by a field SRS resource indicator in the DCI, or may be set by the srs-ResourceIndicator, which is higher-level signaling. As in the above-described codebook-based PUSCH transmission, when the terminal is provided with the SRI by the DCI, the SRS resource indicated by the corresponding SRI may refer to an SRS resource corresponding to the SRI among SRS resources transmitted before the PDCCH including the corresponding SRI. The terminal can use one or more SRS resources for SRS transmission, and the maximum number of SRS resources that can be simultaneously transmitted with the same symbol in one SRS resource set 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 simultaneously transmitted by the terminal can occupy the same RB. The terminal can configure one SRS port for each SRS resource. Only one SRS resource set with the usage value set to 'nonCodebook' in the higher level signaling SRS-ResourceSet can be configured, and up to four SRS resources for non-codebook based PUSCH transmission can be configured.

[0089] The base station transmits one NZP CSI-RS associated with the SRS resource set to the terminal, and the terminal may calculate a precoder to be used when transmitting one or more SRS resources in the corresponding SRS resource set based on a measurement result when receiving the corresponding NZP CSI-RS. The terminal applies the calculated precoder when transmitting one or more SRS resources in the SRS resource set whose usage is set to 'nonCodebook' to the base station, and the base station may select one or more SRS resources from the received one or more SRS resources. In this case, in the PUSCH transmission based on the non-codebook, the SRI indicates an index capable of expressing a combination of one or more SRS resources, and the SRI may be included in 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 may transmit the PUSCH by applying a precoder applied to the SRS resource transmission to each layer.

[0090] Next, PUSCH repeat transmission will be described. When a terminal is scheduled to transmit PUSCH in DCI format 0_1 ​​in a PDCCH including a CRC scrambled to C-RNTI, MCS-C-RNTI, or CS-RNTI, if the terminal is configured with higher layer signaling pusch-AggregationFactor, the same symbol allocation is applied in consecutive slots of pusch-AggregationFactor, and PUSCH transmission may be limited to single rank transmission. For example, the terminal must repeat the same transport block (TB) in consecutive slots of pusch-AggregationFactor, and must apply the same symbol allocation to each slot. [Table 8] shows the redundancy version (RV) applied to PUSCH repeat transmission for each slot. If a terminal is scheduled for PUSCH repeat transmission in multiple slots in DCI format 0_1, and at least one symbol among the slots in which PUSCH repeat transmission is performed is indicated as a downlink symbol by the information of the higher layer signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated, the terminal may not transmit PUSCH in the slot in which the corresponding symbol is located.

[0091] [Table 8]

[0092] The following is a detailed description of the repeat transmission of the uplink data channel (PUSCH) in the 5G system. In the 5G system, two types of repeat transmission methods of the uplink data channel are supported: PUSCH repeat transmission type A and PUSCH repeat transmission type B. The terminal can be configured with one of the PUSCH repeat transmission types A and B by higher layer signaling.

[0093] PUSCH repeat transmission type A

[0094] As described above, the start symbol and length of the uplink data channel are determined in one slot using the time domain resource allocation method, and the base station can transmit the number of repeated transmissions to the terminal via higher layer signaling (e.g., RRC signaling) or L1 signaling (e.g., DCI).

[0095] - The terminal can repeatedly transmit an uplink data channel having the same start symbol and length as the above-set uplink data channel in consecutive slots based on the number of repeated transmissions received from the base station. In this case, if at least one symbol among the symbols in the slot set by the base station to the terminal as downlink or the symbols in the slot for repeated transmission of the uplink data channel set by the terminal is set as downlink, the terminal can omit transmission of the uplink data channel in the corresponding slot. That is, the uplink data channel may be included in the number of repeated transmissions of the uplink data channel but may not be transmitted.

[0096] PUSCH repeat transmission type B

[0097] As described above, the start symbol and length of the uplink data channel are determined in one slot using the time domain resource allocation method, and the base station can transmit the number of repetitions to the terminal via higher layer signaling (e.g., RRC signaling) or L1 signaling (e.g., DCI).

[0098] First, based on the start 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, the nominal repetition may mean a symbol resource configured by the base station for PUSCH repetitive transmission, and the terminal can determine resources available for uplink with the configured nominal repetition. In this case, the slot where the nth nominal repetition starts is

number

number

number

number

number

[0099] - The terminal determines an invalid symbol for PUSCH repeat transmission type B. A symbol configured in the downlink by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated may be determined as an invalid symbol for PUSCH repeat transmission type B. Additionally, an invalid symbol may be configured based on a higher layer parameter (e.g., InvalidSymbolPattern). As an example, the higher layer parameter (e.g., InvalidSymbolPattern) may configure an invalid symbol by providing a symbol level bitmap spanning one slot or two slots. In this case, a symbol represented by 1 in the bitmap may indicate an invalid symbol. Additionally, a periodicity and a pattern of the bitmap may be configured by a higher layer parameter (e.g., periodicityAndPattern). If an upper layer parameter (e.g., InvalidSymbolPattern) is set and the InvalidSymbolPatternIndicator-ForDCIFormat0_1 or InvalidSymbolPatternIndicator-ForDCIFormat0_2 parameter indicates 1, the terminal shall apply an invalid symbol pattern, and if they indicate 0, the terminal shall not apply an invalid symbol pattern. Alternatively, if an upper layer parameter (e.g., InvalidSymbolPattern) is set and the InvalidSymbolPatternIndicator-ForDCIFormat0_1 or InvalidSymbolPatternIndicator-ForDCIFormat0_2 parameter is not set, the terminal may apply an invalid symbol pattern.

[0100] After an invalid symbol is determined in each nominal repetition, the terminal may consider symbols other than 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 repetition transmission among the symbols set in the set nominal repetition, and may include a continuous set of valid symbols that may be used for PUSCH repetition transmission type B in one slot. The terminal may omit actual repetition transmission if an actual repetition with one symbol is set to valid, except when the symbol length L of the set uplink data channel is 1. For every nth actual repetition, a redundancy version (RV) is applied according to the redundancy version pattern.

[0101] FIG. 6 illustrates an example of PUSCH repetitive transmission type B in a wireless communication system according to an embodiment of the present disclosure.

[0102] Specifically, FIG. 6 shows an embodiment of PUSCH repetition transmission type B in a 5G system. The terminal may set the frame structure setting of TDD (time division duplexing) to 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 is the third in the second uplink transmission, and when the terminal sets the index of the start symbol of the uplink data channel to 0, the length of the uplink data channel to 14, and the number of repetition transmissions repK=8, the nominal repetition appears in 8 consecutive slots from the initial transmission slot (602 in FIG. 6). Then, the terminal determines that the symbol set as the downlink symbol in the frame structure 601 of the TDD system in each nominal repetition is an invalid symbol, and if the valid symbols are composed of one or more consecutive symbols in one slot, the actual repetition is set and the data channel can be transmitted (603 in FIG. 6). Thus, a total of repK_actual=4 PUSCHs can be actually transmitted. In this case, when repK-RV is set to 0-2-3-1, the RV of the PUSCH of the first resource 604 that is actually transmitted is 0, the RV of the PUSCH of the second resource 605 that is actually transmitted is 2, the RV of the PUSCH of the third resource 606 that is actually transmitted is 3, and the RV of the PUSCH of the fourth resource 607 that is actually transmitted is 1.In this case, only PUSCHs having RV0 and RV3 values ​​have values ​​that are decoded by themselves, but in the case of the first resource 604 and the third resource 606, the PUSCHs are transmitted with only three symbols, which is far less than the actually set symbol length (14 symbols), and the rate matching bit lengths 608, 610 are less than the bit lengths 609, 611 calculated by the setting.

[0103] FIG. 7 illustrates an example of a process in which a transmission block is divided into a plurality of code blocks and a CRC is added in a wireless communication system according to an embodiment of the present disclosure.

[0104] Specifically, FIG. 7 illustrates an embodiment of a process in which a transport block (TB) is divided into a plurality of code blocks (CBs) and a CRC is added in a 5G communication system. Referring to FIG. 7, a CRC 702 may be added to the end or beginning of one transport block (TB) 701 to be transmitted in an uplink or downlink. The CRC 702 may have 16 bits or 24 bits or a predetermined number of bits, or may have a variable number of bits depending on channel conditions, and may be used to determine whether channel coding is successful. The block to which the CRC 702 is added to the TB 701 may be divided into a plurality of CBs 703, 704, 705, and 706. In this case, the CB may be divided with a maximum size predetermined, and in this case, the last CB 706 may be smaller in size than the other CBs 703, 704, and 705. However, this is only an example, and according to another example, the length of the last CB 706 may be made the same as that of the other CBs 703, 704, and 705 by inserting 0, an arbitrary value, or 1 into the last CB 706. Also, CRCs 711, 712, 713, and 714 may be added to CBs 707, 708, 709, and 710, respectively. The CRCs 711, 712, 713, and 714 may have 16 bits, 24 bits, or a predetermined number of bits, and may be used to determine whether the channel coding is successful. To generate the CRC 702, the TB 701 and a cyclic generator polynomial may be used. The cyclic generator polynomial may be defined in various ways. For example, suppose 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 if L=24, then TB data a 0 ,a 1 ,a 2 ,a 3 ,…,a A-1 For CRC p 1 ,p 2 ,…,pL-1 is a 0 D A+23 +a 1 D A+22 +…+a A-1 D 24 +p 0 D 23 +p 1 D 22 +…+p 22 D 1 +p 23 is divided by gCRC24A(D) and the remainder is 0. 1 ,p 2 ,…,p L-1In the above example, the CRC length L is assumed to be 24, but the CRC length L may be determined to be various lengths such as 12, 16, 24, 32, 40, 48, and 64. After the CRC is added to the TB in this manner, the TB+CRC may be divided into N CBs 703, 704, 705, and 706. CRCs 711, 712, 713, and 714 may be added to each of the divided CBs 703, 704, 705, and 706. The CRC added to the CB may have a different length than when the CRC added to the TB is generated, or another cyclic generator polynomial may be used to generate the CRC. Also, the CRC 702 added to the TB and the CRCs 711, 712, 713, and 714 added to the CB may be omitted depending on the type of CB applied to the CB. For example, when an LDPC code is applied to a CB instead of a turbo code, CRCs 711, 712, 713, and 714 inserted for each code block may be omitted. However, even when an LDPC code is applied, CRCs 711, 712, 713, and 714 may be added to the CB as they are. Also, even when a polar code is used, a CRC may be added or omitted. As described above in the embodiment of FIG. 7, the maximum length of one CB of a TB to be transmitted is determined according to the type of channel coding applied, and the TB and the CRC added to the TB may be divided into code blocks according to the maximum length of the CB. 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 coded bits, and the number of bits to be rate matched (RM) for each coded bit is determined as expected.

[0105] Below, we will explain in detail how to calculate TBS (transport block size) in the 5G system.

[0106] N' is the number of REs allocated to PUSCH mapping in one PRB among the allocated resources.RE Calculate N' RE teeth

number

number

number

number

number

number

[0107] [Table 9]

[0108] If N info If >3824, then the formula

number

[0109] [Start Pseudo-code 1]

number

[0110] Below, a specific description will be given of a cancellation indication (CI), a slot-format indication (SFI) setting, and a PUSCH transmission / repeated transmission control method using PUSCH / PUCCH overlap in a 5G system.

[0111] FIG. 8 illustrates an example of PUSCH transmission / repeated transmission with CI and SFI settings and PUSCH / PUCCH overlap in a wireless communication system according to an embodiment of the present disclosure.

[0112] Specifically, FIG. 8 is a diagram showing a cancellation indication (CI) 802, a slot-format indication (SFI) setting, and PUSCH transmission / repetition transmission 801 due to PUSCH / PUCCH overlap in a 5G system. When the terminal receives DCI format2_4 having ci-RNTI, the terminal can cancel PUSCH transmission or actual repetition. In this case, the terminal cancels all symbols of the configured PUSCH transmission from the first symbol of the symbol group set to '1' in the received DCI format2_4. In FIG. 8, the terminal is configured with PUSCH repetition transmission by higher layer signaling and L1 signaling, and when the terminal receives a cancellation indication (CI) 803 in repe#3, the terminal cancels from the first symbol of CI to the last symbol of repe#3 in repe#3 (802 in FIG. 8).

[0113] When the terminal is configured with PUCCH, PUSCH, and PRACH transmission by higher layer signaling and receives DCI format2_0 including information on the format of the slot, the terminal can transmit PUCCH, PUSCH, and PRACH in a symbol group in which only the slot format information included in DCI format2_0 is set to the uplink symbol of the slot. In Fig. 8, when the terminal is configured with PUSCH repeat transmission by higher layer signaling and L1 signaling and receives a slot format indication (SFI) 805 by DCI format2_0 in repe#3, if the SFI indicates the symbol of repe#3 as downlink, the terminal does not transmit the entire repe#3 including the downlink symbol (804 in Fig. 8).

[0114] For PUSCH / PUCCH transmission overlaps with different priority indexes, the terminal can cancel PUSCH / PUCCH transmissions with a lower priority index based on the higher priority index. In FIG. 8, when a PUSCH transmission 807 set to a lower priority index='0' by higher layer signaling (e.g., phy-Priority index) and L1 signaling (e.g., priority indicator in DCI format 0_1 / 0_2) overlaps with a PUSCH / PUCCH transmission 808 set to a higher priority index='1', the terminal does not transmit a PUSCH with a lower priority index='0' (806 in FIG. 8). This is merely an example and is not limited to PUSCH transmission, and may also be applied to PUCCH transmission and PUSCH / PUCCH repeated transmission.

[0115] FIG. 9 illustrates an example of TBoMS PUSCH transmission in a wireless communication system according to one embodiment of the present disclosure.

[0116] Specifically, FIG. 9 is a diagram showing a PUSCH transmission with TB processing over multi-slot (TBoMS) in a 5G system. One TB 901 can be assigned to multi-slots 902, 903, 904, and 905 for transmission. In this case, instead of assigning small multiple TBs to the resources of multi-slots 902, 903, 904, and 905, one TB can be assigned to reduce the CRC ratio, obtain a low code rate, and obtain channel coding gain to improve channel coverage. Also, referring to FIG. 7, a method 906 of assigning time domain resources as in PUSCH repeat transmission type A and a method 907 of assigning time domain resources as in PUSCH repeat transmission type B can be applied as a time domain resource allocation method for TBoMS PUSCH transmission. When resources are assigned to PUSCH for TBoMS as in PUSCH repeat transmission type A, PUSCH can be transmitted in multi-slots having the same symbol resource for each slot. In contrast, when time domain resources are allocated to the PUSCH for TBoMS, such as PUSCH repetitive transmission type B, resources may be allocated as in case 0 (908 in FIG. 9), case 1 (909 in FIG. 9), or case 2 (910 in FIG. 9) depending on the symbol length L set by higher layer signaling and L1 signaling.

[0117] In one embodiment of the present disclosure, a PUSCH transmission method is described in a 5G communication system when a CI and a dynamic SFI are set for a PUSCH transmission in which one TB is allocated for multiple slots and a multiple PUSCH transmission in which joint channel estimation is performed. Also, a PUSCH transmission method by overlapping with PUSCH / PUCCH transmissions having different priority indexes is provided. The PUSCH transmission method for CI, dynamic SFI, and overlapping between PUSCH / PUCCH transmissions having different priorities according to one embodiment of the present disclosure can be used to provide a flexible and optimized resource allocation method to improve uplink coverage.

[0118] According to an embodiment of the present disclosure, a method for operating a terminal for transmitting a PUSCH when a cancellation indication (CI), a dynamic SFI setting, and an overlap between PUSCH / PUCCH transmissions having different priorities occur in a PUSCH (physical uplink shared channel) for transmitting one TB through multiple slots and a multiple PUSCH transmission for which simultaneous estimation is performed based on a transmission block processing over multi-slot (TB processing over multi-slot, TBoMS) PUSCH transmission and a multiple PUSCH transmission for which simultaneous estimation is performed, includes the steps of: receiving, from a base station, configuration information for a PUSCH (physical uplink shared channel) for transmitting one TB through multiple slots and a multiple PUSCH transmission for which simultaneous estimation is performed; receiving, from the base station, PUSCH / PUCCH transmission configuration information having a CI, dynamic SFI setting information, and different priority indexes; transmitting, to the base station, the configured TBoMS setting information, the multiple PUSCH transmission setting information for which simultaneous estimation is performed, the CI, dynamic SFI setting information, and the different priority indexes; The step of transmitting the PUSCH according to the configured information based on PUSCH / PUCCH transmission configuration information having the PUSCH / PUCCH transmission configuration information having the above-mentioned index may include:

[0119] According to an embodiment of the present disclosure, when overlapping occurs between a PUSCH / PUCCH transmission having a CI, a dynamic SFI setting, and different priorities in the TBoMS PUSCH and the multiple PUSCH transmission for which simultaneous estimation is performed based on the TBoMS PUSCH transmission for which one TB is transmitted through multiple slots (based on the multiple PUSCH transmission for which simultaneous estimation is performed), a base station operation method for controlling PUSCH transmission may include the steps of: transmitting, to a terminal, configuration information for transmitting a PUSCH (physical uplink shared channel) for which one TB is transmitted through multiple slots and a multiple PUSCH for which simultaneous estimation is performed; transmitting, to the terminal, PUSCH / PUCCH transmission configuration information having a CI, a dynamic SFI setting information, and a different priority index; and receiving, to the terminal, a PUSCH according to the configured information based on the configured TBoMS setting information, the multiple PUSCH transmission configuration information for which simultaneous estimation is performed, the CI, the dynamic SFI setting information, and the PUSCH / PUCCH transmission configuration information having a different priority index.

[0120] According to one embodiment of the present disclosure, a PUSCH transmission method is described when a CI and a dynamic SFI are set for PUSCH transmission in which one TB is assigned to multiple slots and for multiple PUSCH transmission in which joint channel estimation is performed, and a PUSCH transmission method by overlapping with PUSCH / PUCCH transmission having different priority indexes is also described.

[0121] According to an embodiment of the present disclosure, a PUSCH transmission method is provided when a CI and a dynamic SFI are set for a PUSCH transmission in which one TB is assigned to multiple slots and a multiple PUSCH transmission in which joint channel estimation is performed in a 5G system. Also, a PUSCH transmission method by overlapping with a PUSCH / PUCCH transmission having a different priority index is provided. In this case, the embodiment of the present disclosure has described that the TBoMS repeated transmission is a continuous TBoMS PUSCH transmission for a PUSCH transmittable resource based on the same PRB number and start symbol between the TBoMS repeated transmissions, but this is merely for illustrative purposes, and the embodiment of the present disclosure is not limited to the above embodiment, and the repeated transmission of TBoMS may be set and transmitted based on different PRB numbers, start symbols, and symbol lengths between the repeated transmissions. In addition, although an embodiment of the present disclosure has described a PUSCH transmission method based on joint channel estimation of PUSCH repeat transmission of multiplexed PUSCH repeat transmission type A, this is merely for illustrative purposes, and an embodiment of the present disclosure is not limited to the above-mentioned embodiment, and joint channel estimation can be performed in continuous or discontinuous PUSCH transmission in which constancy of the transmission power and phase continuity of the PUSCH are maintained, and an embodiment of the present disclosure can be applied.

[0122] A PUSCH transmission method according to an embodiment of the present disclosure provides a PUSCH transmission control method for CI, dynamic SFI, and PUSCH / PUCCH overlapping with different priorities, and can improve uplink coverage by utilizing flexible time domain resources. In describing an embodiment of the present disclosure, a joint channel estimation of PUSCH transmission and PUSCH repeated transmission of TBoMS is described as an example, but this is for illustrative purposes only, and an embodiment of the present disclosure is not limited to the above embodiment, and an embodiment of the present disclosure may also be applied to a case of PUSCH / PUCCH / PDSCH / PDCCH / PSSCH (physical sidelink shared channel) / PSCCH (physical sidelink control channel) transmission that is predefined / configured or by signaling between a base station and a terminal. In addition, according to an embodiment of the present disclosure, a configuration method for TBoMS and joint channel estimation may be predefined / configured or by signaling between a base station and a terminal. In this case, any value included in the above-mentioned set information may be set according to one or a combination of the following: symbol / slot length, continuity of PUSCH transmission and interval between PUSCH transmissions, number of PUSCH transmissions, transmission occasions, etc.

[0123] First Embodiment

[0124] The first embodiment of the present disclosure provides a method for controlling CI, dynamic SFI, and PUSCH / PUCCH overlapping with different priorities when transmission (TBoMS) is performed in one TB allocated to multiple slots. Although the embodiment of the present disclosure focuses on PUSCH, the method can also be applied to PDSCH / PSSCH transmission.

[0125] [Method 1]

[0126] In method 1, a PUSCH transmission method and a CI application method will be described when a CI is configured for multi-slot PUSCH transmission (TBoMS) configured with one TB.

[0127] FIG. 10 illustrates an example of an operation of a terminal that performs PUSCH transmission based on a CI setting in multi-slot PUSCH transmission (TBoMS) configured with one TB in a wireless communication system according to an embodiment of the present disclosure.

[0128] Specifically, FIG. 10 shows the operation of a terminal that performs PUSCH transmission based on a CI setting for multi-slot PUSCH transmission (TBoMS) configured with one TB in a 5G system.

[0129] Referring to FIG. 10, when a terminal is configured with a multi-slot PUSCH (TBoMS) consisting of one TB by higher layer signaling or L1 signaling from a base station and a CI is configured to overlap with slot #2, a PUSCH transmission method according to a time-domain resource allocation (TDRA) type of TBoMS is illustrated.

[0130] The terminal can receive configuration information such as the number of slots k=4, the start 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) consisting of one TB from the base station by higher layer signaling or L1 signaling (1001 in FIG. 10). At this time, TBoMS#0 consisting of one TB can be transmitted across slots #0 to #3 based on the configured TBoMS information. After that, the base station configures the terminal with CI 1003, and if the configured CI overlaps with slot #2, there is a possibility that the overlapped first symbol to the last symbol of the TBoMS PUSCH transmission will not be transmitted (1002 in FIG. 10). In this case, since too many symbols are not transmitted due to the configured CI, there is a possibility that the decoding performance of the TBoMS will be degraded. To solve this, when the UE is configured with a CI by higher layer signaling and L1 signaling, the PUSCH may be transmitted by applying a resource range to which the CI is applied based on the overlapped slot boundary. Referring to FIG. 10, when the UE is configured with a TBoMS and a CI 1005 by higher layer signaling and L1 signaling, the UE may cancel PUSCH transmission based on the slot boundary in slot #2 of the TBoMS where the configured CI overlaps (1004 in FIG. 10). The above method allows for more optimized PUSCH resources to be utilized, thereby improving decoding performance and uplink coverage.

[0131] The terminal can receive configuration information such as the number of slots k=4, the start symbol S=6, the symbol length L=45 symbols, and the time domain resource allocation (TDRA) type B for transmitting a multi-slot PUSCH (TBoMS) consisting of one TB from the base station by higher layer signaling or L1 signaling (1006 in FIG. 10). At this time, TBoMS#0 consisting of one TB can be transmitted across slots #0 to #3 based on the configured TBoMS information. After that, when the terminal is configured with a CI 1008 from the base station, if the configured CI overlaps with slot #2, there is a possibility that the overlapped first symbol to the last symbol of the TBoMS PUSCH transmission will not be transmitted (1007 in FIG. 10). In this case, since too many symbols are not transmitted due to the configured CI, the decoding performance of the TBoMS may be degraded. To solve this, when the terminal is configured with a CI by higher layer signaling and L1 signaling, the PUSCH may be transmitted by applying the resource range to which the CI is applied based on the overlapped slot boundary. 10, when the UE is configured with the TBoMS and CI 1010 through higher layer signaling and L1 signaling, the UE can cancel PUSCH transmission based on the slot boundary in slot #2 of the TBoMS where the configured CI overlaps (1009 in FIG. 10). The above method can utilize more optimized PUSCH resources, thereby improving decoding performance and uplink coverage.In describing the general embodiments of the present disclosure above, a method of using slot boundaries to apply CI to TBoMS has been described as an example, but this is for illustrative purposes only and does not limit the scope of the present disclosure, and the reference value in the above method may be set by one or a combination of slot boundaries, nominal repetition boundaries, actual repetition boundaries, transmission occasion boundaries, cancellation indication sizes, etc.

[0132] In addition, when a multi-slot PUSCH (TBoMS) consisting of one TB is configured from a base station by higher layer signaling or L1 signaling, the terminal can ignore the CI even if it receives it. In addition, the terminal may not apply the CI considering a higher priority than the CI. In this case, flexible scheduling based on the base station is not possible, but the complexity of the terminal may be improved.

[0133] [Method 2]

[0134] In method 2, a PUSCH transmission method and a dynamic SFI application method will be described when a dynamic SFI is set for multi-slot PUSCH transmission (TBoMS) configured with one TB.

[0135] FIG. 11 illustrates an example of an operation of a terminal that performs PUSCH transmission based on a CI setting in multi-slot PUSCH transmission (TBoMS) configured with one TB in a wireless communication system according to an embodiment of the present disclosure.

[0136] Specifically, FIG. 11 is a diagram shown for explaining the operation of a terminal that performs PUSCH transmission based on CI setting in multi-slot PUSCH transmission (TBoMS) configured with one TB in a 5G system.

[0137] Referring to Figure 11, a method of transmitting a TBoMS PUSCH is illustrated when a terminal is configured with a multi-slot PUSCH (TBoMS) consisting of one TB by higher layer signaling or L1 signaling from a base station, and a dynamic SFI configured by DCI format 2_0 is configured to be overlapped in slot #2.

[0138] A terminal can receive configuration information such as the number of slots k=4, the start symbol S=6, the symbol length L=45 symbols, and the time domain resource allocation (TDRA) type B for transmitting a multi-slot PUSCH (TBoMS) consisting of one TB from a base station by higher layer signaling or L1 signaling (1101 in FIG. 11). Based on the configured TBoMS information, one TBS#0 can transmit the TBoMS PUSCH across multi-slots#0 to #3. In this case, if the terminal receives a dynamic SFI 1103 from the base station by DCI format 2_0, when the received dynamic SFI overlaps with slot#2 and the symbol of slot#2 is set to the downlink, the entire TBoMS PUSCH transmission can be canceled (1102 in FIG. 11).

[0139] Also, when the number of slots k for transmitting a multi-slot PUSCH (TBoMS) consisting of one TB is set to 4, the start symbol S is set to 6, the symbol length L is set to 45 symbols, and the time domain resource allocation (TDRA) type B from the base station by higher layer signaling or L1 signaling, one TBS#0 can transmit the TBoMS PUSCH across multi-slot slots#0 to#3 based on the information of the set TBoMS. In this case, when the terminal receives a dynamic SFI 1105 from the base station by DCI format 2_0, if the received dynamic SFI overlaps with slot#2 and the symbol of slot#2 is set to the downlink, the terminal does not transmit only slot#2, which is a part of the TBoMS, based on the slot boundary (1104 in FIG. 11), but can transmit the TBoMS PUSCH using the remaining uplink resources of slot#0, #1, and #3. In describing the general embodiments of the present disclosure, a method of using a slot boundary to apply a dynamic SFI to TBoMS by DCI format 2_0 has been described as an example, but this is merely for illustrative purposes and does not limit the scope of the present disclosure, and a reference value in the above method may be set by one or a combination of a slot boundary, a nominal repetition boundary, an actual repetition boundary, a transmission occasion boundary, a dynamic SFI symbol size, etc. In addition, in describing the general embodiments of the present disclosure, the dynamic SFI setting by DCI format 2_0 may be set over multiple slots and PUSCH transmissions.

[0140] As an additional method, when TBoMS is configured by higher layer signaling and L1 signaling, the terminal can ignore the dynamic SFI configured by DCI format 2_0 without applying it. In this case, TBoMS can be supported while improving the complexity of the terminal.

[0141] [Method 3]

[0142] In method 3, a method of setting a priority for PUSCH transmission and a method of transmitting PUSCH according to the priority when multi-slot PUSCH transmission (TBoMS) consisting of one TB is set will be described.

[0143] The terminal can receive multi-slot PUSCH (TBoMS) transmission setting information consisting of one TB from the base station through higher layer signaling or L1 signaling. In this case, the base station can set the priority of TBoMS to the terminal as high priority = 1. In this case, if there is overlapping with PUSCH / PUCCH transmission with a low priority, the PUSCH / PUCCH with a low priority may not be transmitted. The above method can ensure the reliability of TBoMS PUSCH transmission and can operate without adding additional terminal functions, thereby improving the complexity of the terminal.

[0144] Based on the above embodiment methods (methods 1 to 3), the terminal can cancel and transmit only some time resources of TBoMS when a multi-slot PUSCH (TBoMS) transmission configured with one TB is configured by higher layer signaling and L1 signaling, and a CI and dynamic SFI are configured. In addition, resources that are not transmitted by the above method can be postponed and retransmitted by a configuration mode (e.g., count based PUSCH configuration) by higher layer signaling and L1 signaling. In order to improve uplink coverage, the above-mentioned method of the present disclosure provides a CI, dynamic SFI, and PUSCH / PUCCH overlapping method for TBoMS PUSCH transmission, which can improve uplink coverage by obtaining energy gain through optimized resource configuration.

[0145] <Second embodiment>

[0146] A second embodiment of the present disclosure provides a method for controlling CI, dynamic SFI, and PUSCH / PUCCH overlapping with different priorities when performing simultaneous channel estimation for multiple PUSCHs. Although the present disclosure focuses on PUSCH, the method can also be applied to PUCCH / PDCCH / PDSCH / PSSCH / PSCCH transmission.

[0147] [Method 1]

[0148] In method 1, a PUSCH transmission method and a CI application method will be described when a CI is set for multiplexed PUSCHs in which simultaneous channel estimation is performed.

[0149] FIG. 12 illustrates an example of an operation of a terminal that performs PUSCH transmission based on a CI configuration for multiplexed PUSCHs in which simultaneous channel estimation is performed in a wireless communication system according to an embodiment of the present disclosure.

[0150] Specifically, FIG. 12 shows the operation of a terminal that performs PUSCH transmission based on CI configuration for multiple PUSCHs in which simultaneous channel estimation is performed in a 5G system.

[0151] Referring to FIG. 12, the terminal may be configured with PUSCH repeat transmission by higher layer signaling or L1 signaling from the base station, and a bundle size=4 slot may be configured as a configuration value for performing simultaneous channel estimation (1201 in FIG. 12). In this case, simultaneous channel estimation is performed in Repe#1 to #4 based on the bundle size configured for the configured PUSCH repeat transmission, and power constancy and phase continuity of PUSCH repeat transmission Repe#1 to #4 may be maintained in order to perform simultaneous channel estimation. In this case, when CI 1202 is configured by higher layer signaling and L1 signaling, transmission of all symbols of Repe#3 from the first symbol of CI may be canceled in Repe#3 where the configured CI overlaps (1203 in FIG. 12). In this case, the phase continuity of Repe#1 to #2, a part of Repe#3, and Repe#4 is not maintained due to the PUSCH repeat transmission canceled by the configured CI. Therefore, P with different phases may be canceled based on the same transmission power configuration. PUSCH,0 and P' PUSCH,0 may be applied starting from the canceled PUSCH transmission. In channel estimation for PUSCH repeated transmission, simultaneous channel estimation (1204 in FIG. 12) is performed in Repe #1 to #2 and part of Repe #3, single channel estimation is performed in Repe #4, and simultaneous channel estimation (1205 in FIG. 12) may be performed in bundle size units from Repe #5 onwards. In the above settings, part of Repe #3 may not be used for simultaneous channel and PUSCH transmission depending on settings and conditions in resource transmission. The above-set transmission power setting for Repe #4 may be updated depending on settings and conditions (e.g., minimum processing time for applying settings).

[0152] Also, as in the above method, the terminal may be configured with PUSCH repeat transmission by higher layer signaling or L1 signaling from the base station, and the bundle size=4 slot may be configured as a configuration value for performing simultaneous channel estimation (1201 in FIG. 12). In this case, simultaneous channel estimation may be performed in Repe#1 to #4 based on the bundle size configured for the configured PUSCH repeat transmission, and power constancy and phase continuity of PUSCH repeat transmission Repe#1 to #4 may be maintained in order to perform simultaneous channel estimation. In this case, when CI1206 is configured by higher layer signaling and L1 signaling, transmission of all symbols of Repe#3 from the first symbol of CI may be canceled in Repe#3 where the configured CI overlaps (1207 in FIG. 12). In this case, due to the PUSCH repeat transmission canceled in the configured CI, the phase continuity of Repe#1 to #2, a part of Repe#3, and Repe#4 is no longer maintained. In this case, a simultaneous channel can be performed in Repe#4 starting from the PUSCH transmission of the canceled Repe#3, and the PUSCH can be transmitted from Repe#4 with the same transmission power based on the bundle size. Therefore, starting from Repe#3, the transmission power setting is P PUSCH,0 and P PUSCH,1 Thereafter, channel estimation for PUSCH repeated transmission is performed using Repe #1 to #2 and a part of Repe #3 (1209 in FIG. 12), and from Repe #4 onwards, simultaneous channel estimation (1209 in FIG. 12) may be performed in bundle size units. With the above settings, a part of Repe #3 may not be used for simultaneous channels and PUSCH transmission depending on the settings and conditions in resource transmission.

[0153] Finally, when the UE is configured with simultaneous channel estimation through higher layer signaling and L1 signaling, it can perform simultaneous channel estimation for multiple PUSCH transmissions by ignoring CI. In this case, the UE can operate without implementing additional functions, thereby improving the UE complexity.

[0154] The method of the present disclosure defines a control method by CI for multiple PUSCH transmission with simultaneous channel estimation, and enables improvement of uplink coverage by optimized simultaneous channel estimation. In describing the overall embodiment of the present disclosure above, a method of applying CI to multiple PUSCH repeat transmission type A with simultaneous channel estimation is described as an example, but this is merely for illustration and does not limit the scope of the present disclosure. As a reference value in the above method, PUSCH repeat transmission type B with simultaneous channel estimation, simultaneous channel estimation in PUSCH repeat transmission configured with other TB, simultaneous channel estimation in TBoMS, etc. may be applied.

[0155] [Method 2]

[0156] In method 2, a PUSCH transmission method and a dynamic SFI application method will be described when a dynamic SFI is set for multiple PUSCHs in which simultaneous channel estimation is performed.

[0157] FIG. 13 illustrates an example of an operation of a terminal that performs PUSCH transmission based on dynamic SFI configuration for multiple PUSCHs in which simultaneous channel estimation is performed in a wireless communication system according to an embodiment of the present disclosure.

[0158] FIG. 13 is a diagram for explaining the operation of a terminal that performs PUSCH transmission based on dynamic SFI setting for multiple PUSCHs in which simultaneous channel estimation is performed in a 5G system.

[0159] Referring to FIG. 13, the terminal may be configured with PUSCH repeat transmission by higher layer signaling or L1 signaling, and a bundle size of 4 slots may be configured as a setting value for simultaneous channel estimation (1301 in FIG. 13). In this case, simultaneous channel estimation is performed in Repe#1 to #4 based on the bundle size configured for the configured PUSCH repeat transmission, and power constancy and phase continuity of PUSCH repeat transmission Repe#1 to #4 may be maintained in order to perform simultaneous channel estimation. At this time, when a dynamic SFI 1302 is configured by DCI format 2_0, transmission of Repe#3 in which the configured dynamic SFI overlaps may be canceled (1303 in FIG. 13). At this time, the phase continuity of Repe#1 to #2 and Repe#4 is no longer maintained due to the PUSCH repeat transmission canceled by the configured dynamic SFI. Therefore, P with different phases may be generated based on the same transmission power setting. PUSCH,0 and P' PUSCH,0 may be applied starting from the canceled PUSCH transmission. Channel estimation for PUSCH repeated transmission may be performed by simultaneous channel estimation (1304 in FIG. 13) in Repe #1 to #2, single channel estimation in Repe #4, and simultaneous channel estimation (1305 in FIG. 13) in bundle size units from Repe #5 onward. The setting of the transmission power of the set Repe #4 may be updated depending on the setting and conditions (e.g., minimum processing time for applying the setting).

[0160] Also, as in the above method, the terminal may be configured with PUSCH repeat transmission by higher layer signaling or L1 signaling from the base station, and the bundle size=4 slot may be configured as a configuration value for performing simultaneous channel estimation (1301 in FIG. 13). In this case, simultaneous channel estimation is performed in Repe#1 to #4 (1308 in FIG. 13) based on the bundle size set in the configured PUSCH repeat transmission, and power constancy and phase continuity of PUSCH repeat transmission Repe#1 to #4 may be maintained in order to perform simultaneous channel estimation. At this time, when the dynamic SFI 1306 is set by the DCI format 2_0, the transmission of Repe#3 overlapping the configured dynamic SFI may be canceled (1307 in FIG. 13). At this time, the phase continuity of Repe#1 to #2 and Repe#4 is not maintained due to the PUSCH repeat transmission canceled by the configured dynamic SFI. In this case, a simultaneous channel can be performed in Repe #4 starting from the canceled PUSCH transmission of Repe #3, and PUSCH can be transmitted from Repe #4 with the same transmission power based on the bundle size. Therefore, starting from Repe #3, the transmission power settings of Repe #1 to #2 and Repe #4 to #5 are respectively P PUSCH,0 and P PUSCH,1 Thereafter, channel estimation for PUSCH repeated transmission is performed by simultaneous channel estimation (1309 in FIG. 13) in Repe #1 to #2, and simultaneous channel estimation (1309 in FIG. 13) may be performed 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.

[0161] Finally, when the UE is configured for simultaneous channel estimation by higher layer signaling and L1 signaling, the UE can perform simultaneous channel estimation for multiple PUSCH transmissions by ignoring the dynamic SFI. In this case, the UE can operate without implementing additional functions, thereby improving the UE complexity.

[0162] The method of the present disclosure defines a control method using dynamic SFI for multiple PUSCH transmissions in which simultaneous channel estimation is performed, and allows for the improvement of uplink coverage through optimized simultaneous channel estimation. In describing the general embodiments of the present disclosure above, a method of applying dynamic SFI to multiple PUSCH repeat transmission type A in which simultaneous channel estimation is performed is described as an example, but this is merely for illustrative purposes and does not limit the scope of the present disclosure. In the above method, PUSCH repeat transmission type B in which simultaneous channel estimation is performed, simultaneous channel estimation in PUSCH repeat transmissions configured with other TBs, simultaneous channel estimation in TBoMS, etc. may be applied as a reference value. In addition, in describing the general embodiments of the present disclosure above, dynamic SFI setting by DCI format 2_0 may be set across multiple slots and PUSCH transmissions.

[0163] [Method 3]

[0164] In method 3, a method of setting a priority of PUSCH transmission and a method of transmitting PUSCH according to the priority when multiplexed PUSCH transmission in which simultaneous channel estimation is performed is set will be described.

[0165] The terminal can receive multiple PUSCH transmission setting information for simultaneous channel estimation from the base station through higher layer signaling or L1 signaling. In this case, the base station can set the priority of the multiple PUSCH transmission for simultaneous channel estimation to high priority=1 for the terminal. In this case, if there is overlapping with a PUSCH / PUCCH transmission with a low priority, the PUSCH / PUCCH with a low priority may not be transmitted. The above method can ensure the reliability of the multiple PUSCH transmission for simultaneous channel estimation, and can improve the complexity of the terminal since it can be operated without adding additional terminal functions.

[0166] Based on the methods (methods 1 to 3) of the above embodiments, the terminal is configured with multiple PUSCH transmissions in which simultaneous channel estimation is performed by higher layer signaling and L1 signaling, and when CI and dynamic SFI are configured, it can cancel and transmit some PUSCH transmissions of multiple PUSCHs in which simultaneous channel estimation is performed. In addition, for resources that are not transmitted by the above methods, they can be postponed and retransmitted by a configuration mode (e.g., count based PUSCH configuration) by higher layer signaling and L1 signaling. The above-mentioned method of the present disclosure provides a CI, dynamic SFI, and PUSCH / PUCCH overlapping method for multiple PUSCH transmissions in which simultaneous channel estimation is performed to improve uplink coverage, thereby improving the accuracy of channel estimation through resource configuration for optimized simultaneous channels and improving uplink coverage.

[0167] <Third embodiment>

[0168] A third embodiment of the present disclosure can provide a control method for CI and dynamic slot-format indication (SFI) settings for multi-slot PUSCH transmission (TBoMS) configured with one TB and PUSCH transmission in which simultaneous channel estimation is performed.

[0169] FIG. 14 is a flowchart showing an operation of a base station that controls a CI and a dynamic SFI for multi-slot PUSCH transmission (TBoMS) configured with one TB and PUSCH transmission in which simultaneous channel estimation is performed in a wireless communication system according to one embodiment of the present disclosure.

[0170] Specifically, FIG. 14 is a flowchart for illustrating the operation of a base station for controlling CI and dynamic SFI in multi-slot PUSCH transmission (TBoMS) configured with one TB and PUSCH transmission with simultaneous channel estimation according to various embodiments of the present disclosure.

[0171] The base station may transmit first configuration information for TB processing over multi-slot (TBoMS) or joint channel estimation (joint channel estimation) through higher layer signaling or L1 signaling (1401 in FIG. 14). The first configuration information may include at least one of a start symbol position, a symbol length, a number of multi-slots, information on a time domain resource allocation type, and a bundling size for joint channel estimation. The base station may then allocate actually transmittable resources for PUSCH transmission based on the first configuration information for the configured TBoMS or joint channel estimation (1402 in FIG. 14). The base station may then flexibly configure resources by transmitting second configuration information for CI or dynamic SFI to the terminal through higher layer signaling or L1 signaling (1403 in FIG. 14). The base station may determine whether to transmit the PUSCH resource to be transmitted based on the second configuration information (1404 in FIG. 14). The second configuration information is information regarding the priority of the PUSCH transmission resource, and whether the PUSCH transmission resource is transmittable can be determined depending on whether it overlaps with a PUSCH transmission resource having a different priority or a PUSCCH transmission resource having a different priority. Then, based on the second configuration information, at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeated transmission can be received in an actually transmittable resource (1405 in FIG. 14). Then, based on the configured joint channel estimation configuration information, 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 (1406 in FIG. 14).

[0172] FIG. 15 is a flowchart illustrating an operation of a terminal that controls a CI and a dynamic SFI for multi-slot PUSCH transmission (TBoMS) configured with one TB and PUSCH transmission in which simultaneous channel estimation is performed in a wireless communication system according to one embodiment of the present disclosure.

[0173] Specifically, FIG. 15 is a flowchart illustrating the operation of a terminal that controls CI and dynamic slot-format indication (SFI) in multi-slot PUSCH transmission (TBoMS) configured with one TB and PUSCH transmission in which simultaneous channel estimation is performed according to one embodiment of the present disclosure.

[0174] The terminal may receive first configuration information for TB processing over multi-slot (TBoMS) or joint channel estimation from the base station through higher layer signaling or L1 signaling (1501 in FIG. 15). The first configuration information may include at least one of a position of a starting symbol, a length of a symbol, a number of multi-slots, information on a time domain resource allocation type, and a bundling size for joint channel estimation. The terminal may then allocate resources that can actually be transmitted for PUSCH transmission based on the first configuration information for the configured TBoMS or joint channel estimation (1502 in FIG. 15). The terminal may then receive second configuration information for CI or dynamic SFI from the base station through higher layer signaling or L1 signaling and allocate resources (1503 in FIG. 15). The second configuration information is information on the priority of the PUSCH transmission resource, and whether the PUSCH transmission resource is transmittable or not can be determined depending 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 transmission is possible for the PUSCH resource to be transmitted based on the second configuration information (1504 in FIG. 15). Then, the terminal can configure to maintain the constancy of PUSCH transmission power and phase continuity for at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission based on the first configuration information (1505 in FIG. 15). Then, at least one of TBoMS transmission, PUSCH transmission, or PUSCH repeat transmission can be performed on an actually transmittable resource based on the first configuration information (1506 in FIG. 15).

[0175] FIG. 16 is a block diagram of a terminal according to one embodiment of the present disclosure.

[0176] Referring to FIG. 16, the terminal 1600 may include a transceiver 1601, a controller (processor) 1602, and a memory (memory) 1603. The transceiver 1601, controller 1602, and memory 1603 of the terminal 1600 may operate according to an efficient channel and signal transmission / reception method in a 5G communication system corresponding to the above-described embodiment. However, the components of the terminal 1600 according to an embodiment are not limited to the above-described example. According to other embodiments, the terminal 1600 may include more or fewer components than the above-described components. Furthermore, in a particular case, the transceiver 1601, controller 1602, and memory 1603 may be implemented in the form of a single chip.

[0177] According to another embodiment, the transceiver 1601 may be composed of a transmitter and a receiver. The transceiver 1601 can transmit and receive signals to and from a base station. The signals can include control information and data. To this end, the transceiver 1601 can be composed of an RF transmitter that upconverts and amplifies the frequency of a signal to be transmitted, an RF receiver that low-noise amplifies a received signal and downconverts the frequency, and the like. In addition, the transceiver 1601 can receive a signal via a wireless channel, output the signal to the controller 1602, and transmit the signal output from the controller 1602 via a wireless channel.

[0178] The controller 1602 may control a series of processes that allow the terminal 1600 to operate according to the above-described embodiment of the present disclosure. For example, the controller 1602 may perform a method of changing the OFDM symbol position of a DMRS in consideration of a method of estimating a channel using DMRSs simultaneously transmitted in a plurality of PUSCHs according to the embodiment of the present disclosure. To this end, the controller 1602 may include at least one processor. For example, the controller 1602 may include a communication processor (CP) that controls communication and an application processor (AP) that controls upper layers such as application programs.

[0179] The storage unit 1603 may store control information or data such as information associated with channel estimation using DMRS transmitted on a PUSCH included in a signal acquired by the terminal 1600, and may have an area for storing data necessary for control of the control unit 1602 and data generated during control by the control unit 1602. The storage unit 1703 may be configured with a volatile memory, a non-volatile memory, or a combination of a volatile memory and a non-volatile memory.

[0180] FIG. 17 is a block diagram of a base station according to one embodiment of the present disclosure.

[0181] Referring to FIG. 17, the base station 1700 may include a transceiver 1701, a controller (processor) 1702, and a storage unit (memory) 1703. The transceiver 1701, controller 1702, and storage unit 1703 of the base station 1700 may operate according to an efficient channel and signal transmission / reception method in a 5G communication system corresponding to the above-mentioned embodiment. However, the components of the base station 1700 according to an embodiment are not limited to the above-mentioned example. According to other embodiments, the base station 1700 may include more or fewer components than the above-mentioned components. Furthermore, in a particular case, the transceiver 1701, controller 1702, and storage unit 1703 may be implemented in the form of one chip.

[0182] According to another embodiment, the transceiver 1701 may be composed of a transmitter and a receiver. The transceiver 1701 can transmit and receive signals to and from a terminal. The signals can include control information and data. To this end, the transceiver 1701 can be composed of an RF transmitter that upconverts and amplifies the frequency of a signal to be transmitted, an RF receiver that low-noise amplifies a received signal and downconverts the frequency, and the like. In addition, the transceiver 1701 can receive a signal via a wireless channel, output the signal to the controller 1702, and transmit the signal output from the controller 1702 via a wireless channel.

[0183] The controller 1702 may control a series of processes that allow the base station 1700 to operate according to the embodiment of the present disclosure. For example, the controller 1702 may perform a method of changing the OFDM symbol position of the DMRS in consideration of a method of estimating a channel using the DMRS transmitted in the PUSCH according to the embodiment of the present disclosure. To this end, the controller 1702 may include at least one processor. For example, the controller 1702 may include a communication processor (CP) that controls communication and an application processor (AP) that controls upper layers such as application programs.

[0184] Storage unit 1703 can store control information and data such as information related to channel estimation using a DMRS transmitted on a PUSCH determined by base station 1700, or control information and data received from a terminal, and can have an area for storing data necessary for control by control unit 1702 and data generated during control by control unit 1702. Storage unit 1703 can be configured with a volatile memory, a non-volatile memory, or a combination of a volatile memory and a non-volatile memory.

[0185] The methods according to the embodiments described in the claims or specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

[0186] In the case of a software implementation, a computer-readable storage medium may be provided that stores one or more programs (software modules). The one or more programs stored in the computer-readable storage medium are configured for execution by one or more processors in an electronic device. The one or more programs include instructions that cause the electronic device to execute a method according to the embodiments described in the claims or specification of the present disclosure.

[0187] 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 device, compact disc-ROM (CD-ROM), digital versatile discs (DVDs) or other forms of optical storage, magnetic cassette, or in a memory configured as a combination of some or all of them. Also, each of the constituent memories may include multiple pieces.

[0188] The program may also be stored in an attachable storage device that can be accessed through a communication network such as the Internet, an Intranet, a local area network (LAN), a wide area network (WAN), or a storage area network (SAN), or a combination thereof. Such a storage device can be accessed by an apparatus that performs an embodiment of the present disclosure through an external port. Also, a separate storage device on the communication network can be accessed by an apparatus that performs an embodiment of the present disclosure.

[0189] Although the present disclosure has been illustrated and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and equivalents thereof. [Explanation of symbols]

[0190] 100 base stations 101 Resource element (RE) 103 Subcarrier 104 Resource block (RB) 110 Subframe 112 Serving Beam 113 Serving Beam 120 terminals 121 Serving Beam 130 terminals 131 Serving Beam 301 1st symbol pattern 302 Second Symbol Pattern 303 1st symbol pattern 304 Second Symbol Pattern 801 Repeated transmission 802 cancellation indication (CI) 803 cancellation indication (CI) 805 slot format indication (SFI) 807 Send 1600 terminals 1601 Transmitter / receiver 1602 Control section 1603 Storage section 1700 base station 1701 Transmitter / receiver 1702 Control section 1703 Storage section

Claims

1. A method performed by a terminal of a wireless communication system, comprising: receiving configuration information associated with a PUSCH repetition from a base station; transmitting a first PUSCH of the PUSCH repetition to the base station based on the configuration information; identifying that an event has occurred that causes phase continuity for the PUSCH repetitions to not be maintained; ceasing the PUSCH repetition based on the event; Including, The event includes receiving a CI or receiving a dynamic SFI; The CI or the SFI is received by a DCI.

2. determining to start another PUSCH repetition; transmitting a second PUSCH of the other PUSCH repetition to the base station; Further comprising: The method of claim 1 , wherein the other PUSCH repetitions start from a first symbol after the event.

3. The method of claim 1 , wherein the configuration information is for a TBoMS, and the configuration information is received by higher layer signaling.

4. The method of claim 2 , wherein whether to start the other PUSCH repetition is determined based on a capability of the terminal.

5. The method of claim 1 , wherein the configuration information includes at least one of a starting symbol position, a symbol length, a number of multislots, a time domain resource allocation type, or a bundling size for joint channel estimation.

6. 1. A method performed by a base station of a wireless communication system, comprising: transmitting configuration information associated with the PUSCH repetition to a terminal; receiving a first PUSCH of the PUSCH repetition from the terminal based on the configuration information; identifying that an event has occurred that causes phase continuity for the PUSCH repetitions to not be maintained; Including, The PUSCH repetition is discontinued based on the event; The event includes a transmission of a CI or a transmission of a dynamic SFI; A method in which the CI or the SFI is transmitted by a DCI.

7. receiving a second PUSCH of another PUSCH repetition from the terminal; Further comprising: The method of claim 6, wherein the other PUSCH repetitions start from a first symbol after the event.

8. The method of claim 6, wherein the configuration information is for a TBoMS, and the configuration information is transmitted by higher layer signaling.

9. The method of claim 7, wherein the other PUSCH repetitions are initiated based on a capability of the terminal.

10. The method of claim 6 , wherein the configuration information includes at least one of a starting symbol position, a symbol length, a number of multislots, a time domain resource allocation type, or a bundling size for joint channel estimation.

11. A terminal of a wireless communication system, A transmitter / receiver unit; A control unit connected to the transceiver unit; Including, The control unit: Receive configuration information associated with a PUSCH repetition from a base station; Transmitting a first PUSCH of the PUSCH repetition to the base station based on the setting information; Identifying that an event has occurred that causes phase continuity for the PUSCH repetition to be no longer maintained; Stopping the PUSCH repetition based on the event. It is set as follows: The event includes receiving a CI or receiving a dynamic SFI; A terminal in which the CI or the SFI is received by a DCI.

12. The control unit: determining to start another PUSCH repetition; Further configured to transmit a second PUSCH of the other PUSCH repetition to the base station; The terminal of claim 11, wherein the other PUSCH repetition is configured to start from a first symbol after the event.

13. The terminal of claim 11, wherein the configuration information is for a TBoMS, and the configuration information is received by higher layer signaling.

14. The terminal according to claim 12, wherein whether to start the other PUSCH repetition is determined based on a capability of the terminal.

15. The terminal of claim 11, wherein the configuration information includes at least one of a starting symbol position, a symbol length, a number of multislots, a time domain resource allocation type, or a bundling size for combining.

16. A base station of a wireless communication system, comprising: A transmitting / receiving unit; A control unit connected to the transceiver unit; Including, The control unit: Transmitting configuration information associated with the PUSCH repetition to a terminal; Receive a first PUSCH of the PUSCH repetition from the terminal based on the configuration information; configured to identify an occurrence of an event that causes phase continuity for the PUSCH repetition to be not maintained; The PUSCH repetition is discontinued based on the event; The event includes a transmission of a CI or a transmission of a dynamic SFI; A base station, wherein the CI or the SFI is configured to be transmitted by a DCI.

17. The control unit: Further configured to receive a second PUSCH of another PUSCH repetition from the terminal; The base station of claim 16, wherein the other PUSCH repetitions start from a first symbol after the event.

18. The base station of claim 16, wherein the configuration information is for TBoMS, and the configuration information is transmitted by higher layer signaling.

19. The base station of claim 17, wherein the other PUSCH repetitions are initiated based on a capability of the terminal.

20. The base station of claim 16, wherein the configuration information includes at least one of a starting symbol position, a symbol length, a number of multislots, a time domain resource allocation type, or a bundling size for joint channel estimation.

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