Method and apparatus for transmitting an uplink channel in a wireless communication system

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] This disclosure relates in general to wireless communication systems, and more specifically to methods and apparatus for transmitting uplink channels in wireless communication systems. [Background technology]

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

[0003] 5G communication systems are being considered for implementation in ultra-high frequency (mmWave) bands (e.g., 60 GHz band). To mitigate path loss and increase transmission distance in ultra-high frequency bands, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large-scale antenna technologies are being discussed for 5G communication systems.

[0004] Furthermore, in order to improve the system network, 5G communication systems are undergoing technological development, including advanced 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, 5G systems have seen the development of 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 methods of repeatedly transmitting uplinks to extend cell coverage in the ultra-high frequency (mmWave) band has emerged.

[0007] The information described above is provided solely as background information to aid in understanding this disclosure. No determination has been made, and no claims have been made, regarding whether any of the above can be applied as prior art with respect to this disclosure. [Overview of the project] [Means for solving the problem]

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

[0009] Additional aspects are partially described in the following description, are partially evident from the description, or can be learned by performing the presented embodiments.

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

[0011] Various embodiments of this disclosure provide a method for operating a base station in a wireless communication system. The method includes: transmitting first configuration information to a terminal for multi-slot transmission block processing (TB processing over multi-slot, TBoMS) or simultaneous channel configuration; allocating a PUSCH (physical uplink shared channel) transmission resource based on the first configuration information; transmitting second configuration information to the terminal for a cancellation indication (CI) or dynamic slot-format indication (DFI); determining whether to transmit to the PUSCH transmission resource based on the second configuration information; receiving at least one of a TBoMS PUSCH transmission, a PUSCH transmission, or a repeated PUSCH transmission based on the PUSCH transmission resource; and performing joint channel estimation and decoding for at least one of a TBoMS PUSCH transmission, a PUSCH transmission, or a repeated PUSCH transmission based on the first configuration information and the PUSCH transmission resource.

[0012] According to various embodiments of this disclosure, a terminal in a wireless communication system is provided. The terminal includes a transceiver and at least one processor, the at least one processor configured to receive first configuration information from a base station for multi-slot transmission block processing (TB processing over multi-slot, TBoMS) or simultaneous channel configuration, allocate a PUSCH (physical uplink shared channel) transmission resource based on the first configuration information, receive second configuration information from the base station for a cancellation indication (CI) or dynamic slot-format indication (DFI), determine whether to transmit to the PUSCH transmission resource based on the second configuration information, set the transmission power and phase for TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission based on the first configuration information, and perform at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repeat transmission based on 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 includes a transceiver and at least one processor, wherein the at least one processor is configured to: transmit first configuration information for multi-slot TB processing (TB processing over multi-slot, TBoMS) or simultaneous channel configuration to a terminal; allocate physical uplink shared channel (PUSCH) transmission resources based on the first configuration information; transmit second configuration information for a cancellation indication (CI) or dynamic slot-format indication (dynamic SFI) to the terminal; determine whether transmission on the PUSCH transmission resources is allowed based on the second configuration information; receive at least one of TBoMS PUSCH transmission, PUSCH transmission, or repeated PUSCH transmission based on the PUSCH transmission resources; and perform joint channel estimation and decoding on at least one of TBoMS PUSCH transmission, PUSCH transmission, or repeated PUSCH transmission based on the PUSCH transmission resources and the first configuration information.

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

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

[0016] Effects obtained by the present disclosure are not limited to the effects mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure pertains from the following description. [Brief Description of Drawings]

[0017] [Figure 1] This figure shows a wireless communication system according to various embodiments of the present disclosure. [Figure 2A] This figure shows the basic structure of the time-frequency domain, which is the radio resource area to which data or control channels are transmitted, in a wireless communication system according to one embodiment of the present disclosure. [Figure 2B] This figure shows a slot structure in a wireless communication system according to one embodiment of the present disclosure. [Figure 3] This figure shows 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] This figure shows an example of channel estimation using DMRS received by a single PUSCH in a time band in a wireless communication system according to one embodiment of the present disclosure. [Figure 5] This figure shows an example of simultaneous channel estimation using DMRS received by multiple PUSCHs in the time band in a wireless communication system according to one embodiment of the present disclosure. [Figure 6] This figure shows an example of a PUSCH repeat transmission type B in a wireless communication system according to one embodiment of the present disclosure. [Figure 7] This figure shows an example of a process in which a transmission block is divided into multiple code blocks and a CRC is added in a wireless communication system according to one embodiment of the present disclosure. [Figure 8] This figure shows an example of a wireless communication system according to one embodiment of the present disclosure, including CI, SFI settings, and push / pucch overlap for push transmission / repeated transmission. [Figure 9] This figure shows an example of TBoMS PUSCH transmission in a wireless communication system according to one embodiment of the present disclosure. [Figure 10] This figure shows an example of the operation of a terminal that performs push transmissions based on CI settings to a multi-slot push transmission (TBoMS) consisting of one TB in a wireless communication system according to one embodiment of the present disclosure. [Figure 11]This figure shows an example of the operation of a terminal that performs push transmissions based on CI settings to a multi-slot push transmission (TBoMS) consisting of one TB in a wireless communication system according to one embodiment of the present disclosure. [Figure 12] This figure shows an example of the operation of a terminal that performs PUSCH transmission based on CI settings in a wireless communication system according to one embodiment of the present disclosure, where simultaneous channel estimation is performed for multiple PUSCH. [Figure 13] This figure shows an example of the operation of a terminal that performs PUSCH transmission based on dynamic SFI settings in a wireless communication system according to one embodiment of the present disclosure, where simultaneous channel estimation is performed for multiple PUSCH. [Figure 14] This is a flowchart illustrating the operation of a base station controlling CI and dynamic SFI for a multi-slot push transmit (TBoMS) consisting of one TB and a push transmit in which simultaneous channel estimation is performed, in a wireless communication system according to one embodiment of the present disclosure. [Figure 15] This is a flowchart showing the operation of a terminal that controls CI and dynamic SFI for a multi-slot push transmit (TBoMS) consisting of one TB and a push transmit in which simultaneous channel estimation is performed, in a wireless communication system according to one embodiment of the present disclosure. [Figure 16] This is a block diagram of a terminal according to one embodiment of the present disclosure. [Figure 17] This 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 numeral is used to depict the same or similar elements, features, and structures. [Modes for carrying out the invention]

[0019] Referring to the accompanying drawings, the following description is provided to aid in a comprehensive understanding of the various embodiments of this disclosure as defined by the claims and their equivalents. Various specific details are included herein to aid understanding, but these should be considered merely illustrative. Accordingly, a person with ordinary skill in the art will recognize that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for 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 bibliographic meanings, but are used by the inventors solely to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the invention is provided for illustrative purposes only and is not intended to limit the invention as defined by the appended claims and equivalents.

[0021] The singular forms "a," "an," and "the" should be understood to include multiple referents unless the context clearly indicates otherwise. Therefore, for example, a reference to "constituent surfaces" includes a reference to one or more such surfaces.

[0022] The various embodiments of the Disclosure described below illustrate hardware approaches. However, since the various embodiments of the Disclosure include techniques that use both hardware and software, the various embodiments of the Disclosure do not exclude software-based approaches.

[0023] The embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. While this disclosure describes embodiments for improving coverage for PUSCH (physical uplink shared channel) transmission, it is not limited to each embodiment. It is also possible to use a combination of all or some embodiments of one or more of the embodiments proposed in this disclosure to apply to frequency resource setting methods for other channels. Therefore, the embodiments of this disclosure may be applied with some modifications, based on the judgment of a person with skilled technical knowledge, without significantly deviating from the scope of this disclosure.

[0024] Furthermore, in explaining this disclosure, if it is determined that a specific explanation of a well-known function or configuration would unnecessarily obscure the gist of this disclosure, such detailed explanation will be omitted. The terms used below are defined in consideration of the functions described in this disclosure, and these may differ depending on the intent or practice of the user or operator. Therefore, their definitions should be based on the content of this specification as a whole.

[0025] Wireless communication systems have moved beyond providing early voice-centric services and have evolved into broadband wireless communication systems that provide high-speed, high-quality packet data services, such as 3GPP's (3rd Generation Partnership Project) HSPA (High Speed ​​Packet Access), LTE (Long Term Evolution or E-UTRA (Evolved Universal Terrestrial Radio Access)), LTE-Advanced (LTE-A), LTE-Pro, 3GPP2's HRPD (High Rate Packet Data), UMB (Ultra Mobile Broadband), and IEEE's (Institute of Electrical and Electronics Engineers) 802.17e.

[0026] In the LTE system, a typical example of a broadband wireless communication system, the OFDM (orthogonal frequency division multiplexing) method is used for the downlink (DL), and the SC-FDMA (single carrier frequency division multiple access) method is used for the uplink (UL). The uplink refers to the radio link on 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)), while the downlink refers to the radio link on which a base station transmits data or control signals to a terminal. Furthermore, the aforementioned multiplexing method is typically allocated and operated in such a way that the time-frequency resources used to transmit data or control information for each user do not overlap, i.e., orthogonality is maintained, thereby separating the data or control information for each user.

[0027] 5G communication systems, which are the successor to LTE, must support services that simultaneously satisfy a variety of requirements, allowing for the free reflection of diverse needs from users and service providers. Services considered for 5G communication systems include enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low-latency communication (URLLC).

[0028] eMBB aims to provide data communication speeds higher than those supported by existing LTE, LTE-A, or LTE-Pro. For example, in a 5G communication system, eMBB must be able to provide a peak data rate of 20 Gbps downlink and a peak data rate of 10 Gbps uplink from the perspective of a single base station. In addition, a 5G communication system must provide not only the peak data rate but also an increased user-perceived data rate. To satisfy these requirements, improvements in various transmission and reception technologies may be required, including more advanced multi-input multi-output (MIMO) transmission technology. Furthermore, while LTE systems transmit signals using a maximum transmission bandwidth of 20 MHz in the 2 GHz band, 5G communication systems can satisfy the data communication speeds required by using a wider frequency bandwidth than 20 MHz in the 3-6 GHz or above frequency band.

[0029] Simultaneously, mMTC is being considered to support application services such as the Internet of Things (IoT) in 5G communication systems. To efficiently provide the IoT, mMTC requires support for large-scale terminal connectivity within a cell, improved terminal coverage, extended battery life, and reduced terminal costs. Because the IoT involves various sensors and devices providing communication capabilities, it must be able to support a large number of terminals within a cell (e.g., 1,000,000 terminals / km2). Furthermore, due to the nature of the service, terminals supporting mMTC are likely to be located in shaded areas not covered by the cell, such as building basements, thus requiring even wider coverage compared to other services offered by 5G communication systems. Since mMTC-supporting terminals must be low-cost and require a very long battery life of 10-16 years, frequent battery replacement is difficult.

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

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

[0032] The terms used in the following description to refer to signals, channels, control information, network entities, and components of devices are illustrative examples for illustrative purposes only. Therefore, this disclosure is not limited to the terms described below, and other terms with equivalent technical meanings may be used.

[0033] Furthermore, while this disclosure uses terminology from certain communication standards (e.g., 3GPP (3rd Generation Partnership Project)) to describe various embodiments, these are merely illustrative examples. The diverse embodiments of this disclosure can be readily adapted and applied to other communication systems.

[0034] Figure 1 illustrates a wireless communication system according to various embodiments of the present disclosure. Figure 1 illustrates a base station 100, terminal 120, and terminal 130 as part of a node utilizing a radio channel in the wireless communication system. Although Figure 1 illustrates only one base station, other base stations identical or similar to base station 100 may be further included.

[0035] Base station 100 is network infrastructure that provides wireless connectivity to terminals 120 and 130. Base station 100 has coverage, which is defined as a predetermined geographical area based on the distance over which it can transmit signals. In addition to being a base station, base station 100 also includes "access point (AP)", "eNodeB (eNB)", and "5G node (5 th It can be referred to as a generation node, next generation node B (gNB), wireless point, transmission / reception point (TRP), or other terms with equivalent technical meaning.

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

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

[0038] The first and second antenna ports can be described as being in a QCL relationship if the large-scale characteristics of the channel that transmitted symbols on the first antenna port can be inferred from the channel that transmitted symbols on the second antenna port. For example, the large-scale characteristics may include at least one of the following: delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial receiver parameter.

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

[0040] Specifically, Figure 2A shows the basic structure of the time-frequency domain, which is the wireless resource domain of a 5G system.

[0041] In Figure 2A, the horizontal axis represents the time domain and the vertical axis represents the frequency domain. In the time and frequency domains, the basic unit of a resource is a resource element (RE) 101, which can be defined by one OFDM (orthogonal frequency division multiplexing) symbol (or DFT-s-OFDM (discrete Fourier transform spread OFDM) symbol) 102 in the time domain and one subcarrier 103 in the frequency domain. In the frequency domain, (for example, 12) consecutive REs can constitute one resource block (RB) 104. Also, in the time domain,

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

[0043] Specifically, Figure 2B shows the slot structure to be considered in a 5G system.

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

number

[0045] In the embodiment shown in Figure 2, the slot structure is illustrated for cases where the subcarrier interval setting value is μ=0 (204) and μ=1 (205). When μ=0 (204), one subframe 201 can consist of one slot 202, and when μ=1 (205), one subframe 201 can consist of two slots 203. In other words, the number of slots per subframe depends on the setting value μ for the subcarrier interval.

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[0046] [Table 1]

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

[0048] A DMRS may consist of multiple DMRS ports, each maintaining orthogonality using CDM (code division multiplexing) or FDM (frequency division multiplexing) to prevent interference between them. However, the term DMRS may be expressed using other terms depending on the user's intent and the intended use of the reference signal. More specifically, the term DMRS is merely a specific example provided to facilitate the explanation of the technical content of this disclosure and to aid in its understanding, and is not intended to limit the scope of this disclosure. In other words, it is obvious to a person with ordinary skill in the art to which this disclosure pertains that the technical ideas of this disclosure are also applicable to reference signals.

[0049] Figure 3 shows 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.

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

[0051] Two DMRS patterns may be supported in 5G systems. Figure 3 specifically illustrates the two DMRS patterns. Referring to Figure 3, the first symbol pattern 301 and the second symbol pattern 302 represent DMRS type 1. The first symbol pattern 301 and the second symbol pattern 302 of DMRS type 1 in Figure 3 are DMRS patterns with a combination 2 structure, which can consist of two CDM groups, and these different CDM groups can be subjected to frequency dimension multiplexing (FDM).

[0052] In the first symbol pattern 301 of Figure 3, frequency-based CDM can be applied to the same CDM group to distinguish between two DMRS ports, thus allowing for a total of four orthogonal DMRS ports to be configured. The DMRS port IDs mapped to each CDM group are shown in the first symbol pattern 301 of Figure 3 (for downlink, the DMRS port IDs are shown by adding 1000 to the illustrated numbers). In the second symbol pattern 302 of Figure 3, time / frequency-based CDM can be applied to the same CDM group to distinguish between four DMRS ports, thus allowing for a total of eight orthogonal DMRS ports to be configured. The DMRS port IDs mapped to each CDM group are shown in the second symbol pattern 302 of Figure 3 (for downlink, the DMRS port IDs are shown by adding 1000 to the illustrated numbers).

[0053] The DMRS type 2 of the first symbol pattern 303 and the second symbol pattern 304 in Figure 3 is a DMRS pattern in which frequency domain orthogonal cover codes (FD-OCC) are applied to frequency-adjacent subcarriers, and can consist of three CDM groups, and different CDM groups can be FDM'd.

[0054] In the first symbol pattern 303 of Figure 3, frequency-based CDM can be applied to the same CDM group to distinguish between two DMRS ports, thus allowing for a total of six orthogonal DMRS ports to be configured. The DMRS port IDs mapped to each CDM group are shown in the first symbol pattern 303 of Figure 3 (for downlink, the DMRS port IDs are shown by adding 1000 to the illustrated numbers). In the second symbol pattern 304 of Figure 3, time-based / frequency-based CDM can be applied to the same CDM group to distinguish between four DMRS ports, thus allowing for a total of twelve orthogonal DMRS ports to be configured. The DMRS port IDs mapped to each CDM group are shown in the second symbol pattern 304 of Figure 3 (for downlink, the DMRS port IDs are shown by adding 1000 to the illustrated numbers).

[0055] As described above, the NR system may have two distinct DMRS patterns, for example, DMRS type 1 with the first symbol pattern 301 and the second symbol pattern 302 in Figure 3, or DMRS type 2 with the first symbol pattern 303 and the second symbol pattern 304. It may also be set that the DMRS pattern is either the first symbol pattern 301 and 303, or the adjacent second symbol pattern 302 and 304. In addition, the NR system may not only schedule the DMRS port number, but also signal the number of CDM groups scheduled together for PDSCH rate matching (physical downlink shared channel rate matching). Furthermore, in the case of CP-OFDM (cyclic prefix based orthogonal frequency division multiplex), both DL and UL may support the two DMRS patterns described above, while in the case of DFT-S-OFDM (discrete Fourier transform spread OFDM), only DMRS type 1 of the DMRS patterns described above may be supported in UL. Additionally, support may be available for setting additional DMRSs. Front-loaded DMRS refer to the first DMRS located at the beginning of the timeline, while additional DMRS refer to DMRS located at symbols after the front-loaded DMRS. The number of additional DMRSs in an NR system can be set from a minimum of 0 to a maximum of 3. Also, if DMRSs are set, it can be assumed that they follow the same pattern as the front-loaded DMRS.More specifically, if a front-loaded DMRS is instructed to provide information regarding whether the DMRS pattern type described above is type 1 or type 2, whether the DMRS pattern is a first symbol pattern or an adjacent second symbol pattern, and the number of DMRS ports and CDM groups used, then if an additional DMRS is configured, it can be assumed that the additional DMRS has the same DMRS information as the front-loaded DMRS.

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

[0057] [Table 2]

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

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

[0060] Specifically, Figure 4 shows an example of channel estimation using DMRS received by a single PUSCH in a 5G system.

[0061] When performing channel estimation for data decoding using the aforementioned DMRS, channel estimation can be performed within a PRG (precoding resource block group), which is the corresponding bundling unit, using PRB bundling (physical resource blocks bundling) linked to the system bandwidth in the frequency band. In the time unit, channel estimation is performed assuming that the precoding is the same for DMRS received by only one PUSCH.

[0062] Figure 5 shows an example of simultaneous channel estimation using DMRS received by multiple PUSCHs in the time band in a wireless communication system according to one embodiment of the present disclosure.

[0063] Specifically, Figure 5 shows an example of joint channel estimation using DMRS received by multiple PUSCHs in the time band of a 5G system to which one embodiment of this disclosure may be applied.

[0064] The base station can instruct terminals whether or not to use the same precoding, and by using this, the base station can estimate the channel using DMRS transmissions that use the same precoding, thereby improving DMRS channel estimation performance.

[0065] Similar to the embodiment in Figure 4, in the embodiment in Figure 5, in channel estimation for data decoding using the DMRS described above, channel estimation can be performed within the PRG (precoding resource block group), which is the corresponding bundling unit, using PRB bundling linked to the system bandwidth in the frequency band. Additionally, channel estimation is performed assuming that only DMRS received by one or more PUSCHs per time unit have the same precoding. This allows channel estimation based on a large number of DMRS in the time band, thus improving channel estimation performance. In particular, channel estimation performance can be extremely important in order to improve coverage, as it can become a bottleneck even if data decoding performance is good.

[0066] The following describes how time-domain resources are allocated to data channels in a 5G communication system. Base stations can configure tables for time-domain resource allocation information for downlink data channels (physical downlink shared channel, PDSCH) and uplink data channels (physical uplink shared channel, PUSCH) on terminals using upper-layer signaling (e.g., RRC signaling).

[0067] A base station can configure a table for PDSCH consisting of a maximum of maxNrofDL-Allocations=17 entries, and a table for PUSCH consisting of a maximum of maxNrofUL-Allocations=17 entries. Time domain resource allocation information may include, for example, PDCCH-to-PDSCH slot timing (corresponding to the time interval in slots between the time a PDCCH is received and the time a PDSCH scheduled by the received PDCCH is transmitted, denoted as K0), or PDCCH-to-PUSCH slot timing (corresponding to the time interval in slots between the time a PDCCH is received and the time a PUSCH scheduled by the received PDCCH is transmitted, denoted as K2), information regarding the position and length of the start symbol in which a PDSCH or PUSCH is scheduled within a slot, and the mapping type of the PDSCH or PUSCH. For example, time domain resource allocation information for PDSCH may be set on a terminal by an RRC signal as shown in [Table 4] below.

[0068] [Table 4]

[0069] Furthermore, for example, time-domain resource allocation information for PUSCH can be set on the terminal by an RRC signal, as shown in [Table 5] below.

[0070] [Table 5]

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

[0072] The following section specifically describes the transmission of physical uplink shared channels (PUSCH) in 5G systems. PUSCH transmissions can be dynamically scheduled by UL grants within DCI, or they can operate using configured grant Type 1 or configured grant Type 2. Dynamic scheduling for PUSCH transmissions can be represented, for example, by DCI format 0_0 or 0_1.

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

[0074] [Table 6]

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

[0076] If a terminal is instructed to schedule a PUSCH transmit using DCI format 0_0, the terminal can beam-configure for the PUSCH transmit using the push-spatialRelationInfoID corresponding to a terminal-specific (UE-specific, dedicated) PUCCH resource with the lowest ID within the activated uplink bandwidth part (BWP) in the serving cell. In this case, the PUSCH transmit may be performed based on a single antenna port. The terminal cannot expect to be scheduled for a PUSCH transmit using DCI format 0_0 in a BWP where a PUCCH resource containing push-spatialRelationInfo is not configured. If the terminal does not configure txConfig in push-Config in [Table 7], the terminal cannot expect to be scheduled using DCI format 0_1.

[0077] [Table 7]

[0078] Next, we will describe codebook-based PUSCH transmissions. Codebook-based PUSCH transmissions can be dynamically scheduled by DCI format 0_0 or 0_1, or quasi-statically operated by configured grants. When codebook-based PUSCH transmissions are dynamically scheduled by DCI format 0_1 ​​or quasi-statically operated by configured grants, the terminal can determine the precoder for the PUSCH transmission based on the SRS resource indicator (SRI), the transmission precoding matrix indicator (TPMI), and the transmission rank (i.e., the number of PUSCH transmission layers).

[0079] In this case, the SRI may be provided by the field SRS resource indicator within the DCI, or set by the higher-level signaling, srs-ResourceIndicator. When a terminal performs a PUSCH transmission based on the codebook, it may be able to set at least one SRS resource, and for example, up to two. If the terminal is provided with an SRI by the DCI, the SRS resource indicated by that SRI may mean the SRS resource corresponding to the SRI among the SRS resources transmitted prior to the PDCCH containing that SRI. In addition, the TPMI and transmission rank may be provided by the field precoding information and number of layers within the DCI, or set by the higher-level signaling, precodingAndNumberOfLayers. The TPMI may be used to indicate the precoder applied to the 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 can determine the codebook subset based on the TPMI and the codebookSubset in the higher-level signaling, push-Config. In this case, the codebookSubset in the higher-level signaling, push-Config, may be set to one of 'fullyAndPartialAndNonCoherent', 'partialAndNonCoherent', or 'nonCoherent' based on the UE capability that the terminal reports to the base station.

[0081] If a terminal reports 'partialAndNonCoherent' in its UE capability, it cannot expect the value of its higher-level signaling, codebookSubset, to be set to 'fullyAndPartialAndNonCoherent'. Similarly, if a terminal reports 'nonCoherent' in its UE capability, it cannot expect the value of its higher-level signaling, codebookSubset, to be set to either 'fullyAndPartialAndNonCoherent' or 'partialAndNonCoherent'. If nrofSRS-Ports in the higher-level signaling, SRS-ResourceSet, indicates two SRS antenna ports, the terminal cannot expect the value of its higher-level signaling, codebookSubset, to be set to 'partialAndNonCoherent'.

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

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

[0084] Next, we will describe non-codebook based push transmissions. Non-codebook based push transmissions can be dynamically scheduled by DCI format 0_0 or 0_1, or they can operate quasi-statically by configured grants. A terminal may schedule a non-codebook based push transmission by DCI format 0_1 ​​if at least one SRS resource is configured in an SRS resource set whose usage value in the higher-level signaling SRS-ResourceSet is set to 'nonCodebook'.

[0085] For an SRS resource set whose usage value in the higher-level signaling SRS-ResourceSet is set to 'nonCodebook', the terminal may configure an NZP (non-zero power) CSI-RS resource associated with that SRS resource set. The terminal can perform calculations for the 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 the aperiodic NZP CSI-RS resource associated with the SRS resource set and the first symbol of the aperiodic SRS transmission at the terminal is less than a certain number of symbols (e.g., 42 symbols), the terminal cannot expect the information regarding the precoder for SRS transmission to be updated.

[0086] When the value of resourceType in the higher-level signaling SRS-ResourceSet is set to 'aperiodic', the NZP CSI-RS associated with the above SRS-ResourceSet can be indicated by the SRS request field in DCI format 0_1 ​​or 1_1. In this case, if the NZP CSI-RS resource associated with the SRS-ResourceSet is an 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 the existence of the NZP CSI-RS associated with the SRS-ResourceSet. In this case, the DCI must 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 NZP CSI-RS may be located in the slot from which the PDCCH containing the SRS request field was sent. In this case, the TCI state set for the scheduled subcarrier 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 above SRS resource set can be indicated by the associatedCSI-RS within the SRS-ResourceSet, which is the higher-level signaling. For non-codebook based transmissions, the terminal cannot expect both the spatialRelationInfo, which is the higher-level signaling for the SRS resource, and the associatedCSI-RS within the SRS-ResourceSet, which is the higher-level signaling, to be configured.

[0088] If a terminal is configured with multiple SRS resources, the precoder and transmission rank to apply to a PUSCH transmission can be determined based on the SRI indicated by the base station. The SRI may be indicated by the SRS resource indicator field in the DCI, or it may be set by the higher-level signaling srs-ResourceIndicator. Similar to PUSCH transmissions based on the codebook described above, if the terminal is provided with an SRI by the DCI, the SRS resource indicated by that SRI may refer to the SRS resource corresponding to the SRI among the SRS resources transmitted prior to the PDCCH containing that SRI. A terminal can use one or more SRS resources for an SRS transmission, and the maximum number of SRS resources that can be transmitted simultaneously with the same symbol within a single 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, SRS resources transmitted simultaneously by the terminal can occupy the same RB. A terminal can configure one SRS port for each SRS resource. Only one SRS resource set can be configured in the higher-level signaling SRS-ResourceSet with the usage value set to 'nonCodebook', and up to four SRS resources can be configured for non-codebook based PUSCH transmissions.

[0089] The base station transmits one NZP CSI-RS associated with an SRS resource set to the terminal, and the terminal can calculate the precoder to use when transmitting one or more SRS resources within that SRS resource set based on the results measured upon receiving the NZP CSI-RS. The terminal applies the calculated precoder when transmitting one or more SRS resources from the SRS resource set with usage set to 'nonCodebook' to the base station, and the base station can select one or more SRS resources from the received one or more SRS resources. In this case, in a non-codebook based PUSCH transmission, the SRI indicates an index that can represent a combination of one or more SRS resources, and the above 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 can transmit the PUSCH by applying the precoder applied to the SRS resource transmission to each layer.

[0090] Next, we will discuss repeated PUSCH transmissions. When a terminal is scheduled to perform a PUSCH transmission in DCI format 0_1 ​​within a PDCCH that includes a CRC scrambled to C-RNTI, MCS-C-RNTI, or CS-RNTI, and the terminal has a higher-layer signaling push-AggregationFactor set, the same symbol assignment may be applied to consecutive slots equal to the push-AggregationFactor, and the PUSCH transmission may be limited to a single-rank transmission. For example, the terminal must repeat the same transport block (TB) in consecutive slots equal to the push-AggregationFactor, and the same symbol assignment must be applied to each slot. [Table 8] shows the redundancy version (RV) applied to repeated PUSCH transmissions for each slot. If a terminal has scheduled repeated PUSCH transmissions in DCI format 0_1 ​​across multiple slots, and at least one symbol among the slots where repeated PUSCH transmissions are performed is indicated as a downlink symbol by the upper-layer signaling tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated, the terminal may choose not to perform a PUSCH transmission in the slot where that symbol is located.

[0091] [Table 8]

[0092] The following provides a detailed explanation of repeated transmission of uplink data channels (PUSCH) in 5G systems. 5G systems support two types of repeated transmission methods for uplink data channels: PUSCH repeated transmission type A and PUSCH repeated transmission type B. A terminal can be configured to use either PUSCH repeated transmission type A or B via upper-layer signaling.

[0093] PUSCH Repeat Transmission Type A

[0094] -As described above, the start symbol and length of the uplink data channel are determined within a single slot using the time-domain resource allocation method described above, 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).

[0095] - Based on the number of repeated transmissions received from the base station, the terminal can repeatedly transmit uplink data channels in consecutive slots that have the same starting symbol and length as the uplink data channel set above. In this case, if at least one symbol among the symbols in the slot set by the base station as a downlink, or in the slot set by the terminal for repeated transmission of uplink data channels, is set as a downlink, the terminal can omit transmitting the uplink data channel in that slot. In other words, it 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 within a single slot using the time-domain resource allocation method described above, and the base station can transmit the number of repetitions to the terminal via upper-layer signaling (e.g., RRC signaling) or L1 signaling (e.g., DCI).

[0098] -First, based on the starting symbol and length of the uplink data channel configured as described above, the nominal repetition of the uplink data channel may be determined as follows. Here, the nominal repetition may mean the resource of the symbol configured by the base station for PUSCH repetition transmission, and the terminal can determine the resources available for the uplink in the configured nominal repetition. In this case, the slot in which the nth nominal repetition begins is

number

number

number

number

number

[0099] - The terminal determines invalid symbols for PUSCH repetition transmission type B. Symbols set to downlink by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated may be determined as invalid symbols for PUSCH repetition transmission type B. Additionally, invalid symbols may be set based on higher-layer parameters (e.g., InvalidSymbolPattern). For example, an invalid symbol can be set by the above higher-layer parameter (e.g., InvalidSymbolPattern) providing a symbol-level bitmap spanning one or two slots. In this case, a value of 1 in the bitmap may indicate an invalid symbol. Additionally, the period and pattern of the bitmap may be set by a higher-layer parameter (e.g., periodicityAndPattern). If a higher-level parameter (e.g., InvalidSymbolPattern) is set and the InvalidSymbolPatternIndicator-ForDCIFormat0_1 or InvalidSymbolPatternIndicator-ForDCIFormat0_2 parameter is set to 1, the terminal applies the invalid symbol pattern; if it is set to 0, the terminal does not need to apply the invalid symbol pattern. Alternatively, if a higher-level parameter (e.g., InvalidSymbolPattern) is set and the InvalidSymbolPatternIndicator-ForDCIFormat0_1 or InvalidSymbolPatternIndicator-ForDCIFormat0_2 parameter is not set, the terminal may apply the invalid symbol pattern.

[0100] - After an invalid symbol is determined in each nominal repetition, the terminal can consider the symbols excluding the determined invalid symbols as valid symbols. If each nominal repetition contains one or more valid symbols, the nominal repetition can contain one or more actual repetitions. Here, each actual repetition means a symbol from the symbols set in the above-set nominal repetition that is actually used for PUSCH repetition transmission, and can contain a contiguous set of valid symbols that can be used for PUSCH repetition transmission type B within a single slot. Unless the symbol length L of the set uplink data channel is 1, the terminal can omit actual repetition transmission if an actual repetition with one symbol is set to valid. A redundancy version (RV) is applied according to the redundancy version pattern set for each nth actual repetition.

[0101] Figure 6 shows an example of a PUSCH repeat transmission type B in a wireless communication system according to one embodiment of the present disclosure.

[0102] Specifically, Figure 6 shows one embodiment of PUSCH repetitive transmission type B in a 5G system. The terminal may have a TDD (time division duplexing) frame structure setting of 3 downlink slots, 1 special / flexible slot, and 1 uplink slot. Here, if the special / flexible slot consists of 11 downlink symbols and 3 uplink symbols, and the initial transmission slot is the 3rd in the second uplink transmission, and 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 repetitions repK=8, then the nominal repetition will appear in 8 consecutive slots from the initial transmission slot (602 in Figure 6). Subsequently, in each nominal repetition, the terminal determines that any symbols set as downlink symbols in the TDD system's frame structure 601 are invalid symbols. If valid symbols consist of one or more consecutive symbols in a single slot, an actual repetition is set and the data channel can be transmitted (603 in Figure 6). Thus, a total of repK_actual = 4 PUSCHs can actually be transmitted. In this case, if repK-RV is set to 0-2-3-1, the RV of the PUSCH for the first resource 604 that is actually transmitted is 0, the RV of the PUSCH for the second resource 605 that is actually transmitted is 2, the RV of the PUSCH for the third resource 606 that is actually transmitted is 3, and the RV of the PUSCH for the fourth resource 607 that is actually transmitted is 1.In this case, only PUSCH with RV0 and RV3 values ​​has values ​​that can be decoded by itself. However, in the case of the first resource 604 and the third resource 606, PUSCH is transmitted with only 3 symbols, which is far fewer than the actually set symbol length (14 symbols), and the bit lengths 608 and 610 that are rate-matched are less than the bit lengths 609 and 611 calculated by the settings.

[0103] Figure 7 shows an example of a wireless communication system according to one embodiment of the present disclosure, in which a transmission block is divided into multiple code blocks and a CRC is added.

[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 last or leading part of one transport block (TB) 701 to be transmitted in an uplink or a downlink. The CRC 702 may be 16 bits, 24 bits, or a pre-fixed number of bits, or may have a variable number of bits depending on channel conditions and the like, and may be used to determine whether channel coding succeeds or fails. A block obtained by adding the CRC 702 to the TB 701 may be divided into a plurality of CBs 703, 704, 705, and 706. In this case, the maximum size of the CBs may be predetermined before the division, and in this case, the last CB 706 may have a smaller size than the other CBs 703, 704, and 705. However, this is merely an example, and according to other examples, by inserting 0, an arbitrary value, or 1 into the last CB 706, the lengths of the last CB 706 and the other CBs 703, 704, and 705 may be adjusted to be the same. In addition, respective CRCs 711, 712, 713, and 714 may be added to the CBs 707, 708, 709, and 710 respectively. The CRCs 711, 712, 713, and 714 may be 16 bits, 24 bits, or a pre-fixed number of bits, and may be used to determine whether channel coding succeeds or fails. 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, assuming that 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, when L=24, TB data a0,a1,a2,a3,…,a A-1 , CRC p1,p2,…,p L-1 is a0D A+23 +a1D A+22 +…+a A-1 D 24+p0D 23 +p1D 22 +…+p 22 D 1 +p 23 The values ​​p1, p2, ..., p are the values ​​where the remainder is 0 when divided by gCRC24A(D). L-1 This can be determined. In the example above, we assumed that the CRC length L was 24, but the CRC length L can be determined to various lengths such as 12, 16, 24, 32, 40, 48, 64, etc. After the CRC is added to the TB through this process, the above TB+CRC can be divided into N CBs 703, 704, 705, 706. CRCs 711, 712, 713, 714 can be added to each of the divided CBs 703, 704, 705, 706. The CRC added to the CBs may have a different length than the CRC that was generated when it was added to the TB, or other cyclic generator polynomials may be used for CRC generation. Also, CRC 702 added to the TB and CRCs 711, 712, 713, 714 added to the CBs may be omitted depending on the type of CB to which it is applied. For example, if LDPC code is applied to the CB instead of Turbo code, CRCs 711, 712, 713, and 714 inserted in each code block may be omitted. However, even when LDPC is applied, CRCs 711, 712, 713, and 714 may still be added to the CB. Similarly, when Polar code is used, CRCs may be added or omitted. As described above in the embodiment of Figure 7, the maximum length of a single CB is determined by the type of channel coding applied to the TB to be transmitted, and the TB and the CRCs added to the TB may be divided into code blocks according to the maximum length of the CB. In conventional LTE systems, a CRC for the CB is added to the divided CB, and the data bits and CRC of the CB are encoded into the channel code, thereby determining the coded bits, and the number of bits to be rate matched (RM) as promised for each coded bit is determined.

[0105] The following explains in detail how to calculate the transport block size (TBS) in a 5G system.

[0106] N' is the number of REs assigned 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] The following provides a detailed explanation of the settings for cancellation indicators (CI) and slot-format indicators (SFI), as well as the PUSCH transmission / repeated transmission control method using PUSCH / PUCCH overlap in a 5G system.

[0111] Figure 8 shows an example of a wireless communication system according to one embodiment of the present disclosure, including CI, SFI settings, and push / pucch overlap for push transmission / repeated transmission.

[0112] Specifically, Figure 8 shows a 5G system with a cancellation indication (CI) 802, a slot-format indication (SFI) setting, and a push transmission / repetition transmission 801 via push / puccch overlap. When a terminal receives a DCI format2_4 with ci-RNTI, the terminal can cancel a push transmission or actual repetition. At this time, the terminal cancels all symbols of the configured push transmission, starting from the first symbol of the symbol group set to '1' in the received DCI format2_4. In Figure 8, when a terminal is configured for push repetition transmission by upper-layer signaling and L1 signaling, and receives a cancellation indication (CI) 803 at repe#3, the terminal cancels from the first symbol of the CI to the last symbol of repe#3 (802 in Figure 8).

[0113] When a terminal is configured to transmit PUCCH, PUSCH, and PRACH signals via upper-layer signaling and receives DCI format2_0 containing information about the slot format, the terminal can transmit PUCCH, PUSCH, and PRACH signals using a symbol group set as the slot's uplink symbol, with only the slot format information contained in DCI format2_0 being used. In Figure 8, when a terminal is configured to repeatedly transmit PUSCH signals via upper-layer signaling and L1 signaling and receives a slot format indication (SFI) 805 via DCI format2_0 in repe#3, if the SFI indicates the symbol for repe#3 as a downlink, the terminal does not transmit the entire repe#3 including the downlink symbol (804 in Figure 8).

[0114] A terminal can cancel a PUSCH / PUCCH transmission with a lower priority index based on the higher priority index in a PUSCH / PUCCH transmission overlap with a PUSCH / PUCCH transmission with a different priority index. In Figure 8, when a PUSCH transmission 807 set to a lower priority index (e.g., phy-Priority index) = '0' by upper-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 (e.g., 806 in Figure 8), the terminal will not transmit a PUSCH containing the lower priority index (e.g., 806 in Figure 8). This is merely an example and is not limited to PUSCH transmissions; it can also be applied to PUCCH transmissions and repeated PUSCH / PUCCH transmissions.

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

[0116] Specifically, Figure 9 shows a multi-slot (TB processing over multi-slot, TBoMS) push transmission 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, assigning one TB reduces the CRC ratio, obtains a lower code rate, and improves channel coding gain and channel coverage. Also, referring to Figure 7, as a method of allocating time-domain resources for TBoMS push transmission, method 906, which allocates time-domain resources as in push repetition transmission type A, and method 907, which allocates time-domain resources as in push repetition transmission type B, can be applied. When resources are allocated to a push for TBoMS, as in push repetition transmission type A, a push can be transmitted to multi-slots that have the same symbolic resources for each slot. In contrast, when time-domain resources are allocated to PUSCH for TBoMS, such as in PUSCH repetitive transmission type B, resources may be allocated as follows, depending on the symbol length L set by upper-layer signaling and L1 signaling: Case 0 (908 in Figure 9), Case 1 (909 in Figure 9), and Case 2 (910 in Figure 9).

[0117] One embodiment of this disclosure describes a push transmission method in a 5G communication system where CI and dynamic SFI are set for multiple push transmissions where one TB is allocated to multiple slots and joint channel estimation is performed. It also provides a push transmission method involving overlapping with push / pucch transmissions having different priority indices. The push transmission method for overlapping between CI, dynamic SFI, and push / pucch transmissions with different priorities according to one embodiment of this disclosure can be used to improve uplink coverage by providing a flexible and optimized resource allocation method.

[0118] In one embodiment of the present disclosure, based on a multiple PUSCH transmission in which a TB is transmitted over multi-slot (TB processing over multi-slot, TBoMS) and simultaneous estimation is performed, when an overlap occurs between a PUSCH (physical uplink shared channel) transmission in which one TB is transmitted over multi-slot and simultaneous estimation is performed, and between a multiple PUSCH transmission with a cancellation indication (CI), dynamic SFI setting and different priority (priority), the operation method of a terminal for transmitting a PUSCH is as follows: receiving from a base station setting information for a multiple PUSCH transmission in which one TB is transmitted over multi-slot and simultaneous estimation is performed; receiving from the base station setting information for a CI, dynamic SFI setting and different priority index (priority index); and sending to the base station the above-set TBoMS setting information, multiple PUSCH transmission setting information with simultaneous estimation, CI, dynamic SFI setting information and different priority index (priority index) The step may include sending a PUSCH based on PUSCH / PUCCH transmission configuration information that has an index, according to the configured information.

[0119] According to one embodiment of the present disclosure, when an overlap occurs between a TBoMS PUSCH and

[0120] According to one embodiment of this disclosure, a PUSCH transmission method is described in which CI and dynamic SFI are set for PUSCH transmission in which one TB is assigned to a multi-slot PUSCH transmission and joint channel estimation is performed, and a PUSCH transmission method involving overlapping with PUSCH / PUCCH transmissions having different priority indices is also described.

[0121] According to one embodiment of this disclosure, a method for performing push transmissions in a 5G system is provided for multiple push transmissions where CI and dynamic SFI are set, and where push transmissions and joint channel estimation are performed, with one TB allocated to a multi-slot push transmission. It also provides a method for performing push transmissions by overlapping with push / puch transmissions having different priority indices. In this embodiment, it is stated that a TBoMS repeat transmission is a series of TBoMS push transmissions to resources that can be pushed based on the same number of PRBs and start symbols between TBoMS repeat transmissions, but this is for illustrative purposes only, and the embodiment of this disclosure is not limited to the embodiment described above, and TBoMS repeat transmissions may be set and transmitted based on different numbers of PRBs, start symbols, and symbol lengths between repeat transmissions. Furthermore, while one embodiment of the present disclosure describes a PUSCH transmission method based on joint channel estimation of PUSCH repetition transmission of multiple PUSCH repetition transmission type A, this is merely illustrative, and one embodiment of the present disclosure is not limited to the embodiment described above. Joint channel estimation can be performed in continuous or discontinuous PUSCH transmissions in which the constancy of the PUSCH transmission power and the continuity of the phase are maintained, and one embodiment of the present disclosure may be applied to such transmissions.

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

[0123] <First Embodiment>

[0124] A first embodiment of this disclosure provides a method for controlling CI, dynamic SFI, and push / pucch overlaps with different priorities when a transmission (TBoMS) is performed with one TB allocated to multiple slots. Although one embodiment of this disclosure focuses on push, such a method may also be applied to PDSCH / PSSCH transmissions.

[0125] [Method 1]

[0126] Method 1 describes the push transmission method and CI application method when CI is set for multi-slot push transmission (TBoMS) consisting of one TB.

[0127] Figure 10 shows an example of the operation of a terminal that performs push transmissions based on CI settings in a wireless communication system according to one embodiment of the present disclosure, with multi-slot push transmission (TBoMS) consisting of one TB.

[0128] Specifically, Figure 10 shows the operation of a terminal that performs push transmissions based on CI settings in a 5G system with multi-slot push transmission (TBoMS) consisting of one TB.

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

[0130] The terminal can receive configuration information from the base station, such as the number of slots k=4 for transmitting a multi-slot push (TBoMS) consisting of one TB via upper-layer signaling or L1 signaling, the starting symbol S=0, the symbol length L=14 symbols, and the Time Domain Resource Allocation (TDRA) type A (Figure 10, 1001). At this time, based on the above configured TBoMS information, TBoMS#0 consisting of one TB across slots #0 to #3 may be transmitted. Subsequently, if the terminal is configured with CI1003 from the base station, and the configured CI overlaps in slot #2, it is possible that the symbols from the first overlapping symbol to the last symbol of the TBoMS push transmission will not be transmitted (Figure 10, 1002). In this case, since an excessive number of symbols are not transmitted by the configured CI, the decoding performance of the TBoMS may be reduced. To address this, when a terminal is configured with CI via upper-layer signaling and L1 signaling, a PUSCH can be transmitted by applying the scope of resources to which the CI applies based on overlapping slot boundaries. Referring to Figure 10, when a terminal is configured with TBoMS and CI1005 via upper-layer signaling and L1 signaling, the terminal can cancel the PUSCH transmission based on the slot boundary in slot #2 of the overlapping TBoMS where the configured CI is located (1004 in Figure 10). This method allows for the utilization of more optimized PUSCH resources, thereby improving decoding performance and uplink coverage.

[0131] The terminal can receive configuration information from the base station via upper-layer signaling or L1 signaling, such as the number of slots k=4 for transmitting a multi-slot PUSCH (TB) consisting of one TB, the starting symbol S=6, the symbol length L=45 symbols, and the Time Domain Resource Allocation (TDRA) type B (1006 in Figure 10). Based on the above configured TBoMS information, TBoMS#0, consisting of one TB, may be transmitted across slots #0 to #3. Subsequently, if the terminal is configured with CI1008 from the base station, and the configured CI overlaps in slot #2, it is possible that the symbols from the first overlapping symbol to the last symbol of the TBoMS PUSCH transmission may not be transmitted (1007 in Figure 10). In this case, the decoding performance of the TBoMS may be reduced because too many symbols are not transmitted by the configured CI. To solve this, when the terminal is configured with CI via upper-layer signaling and L1 signaling, the PUSCH may be transmitted by applying the range of resources to which the CI applies based on the overlapping slot boundaries. Referring to Figure 10, when a terminal is configured with TBoMS and CI1010 by upper-layer signaling and L1 signaling, the terminal can cancel a PUSCH transmission based on the slot boundary in slot #2 of the TBoMS where the configured CIs overlap (1009 in Figure 10). This method allows for the utilization of more optimized PUSCH resources, thereby improving decoding performance and uplink coverage.In describing the embodiments of the present disclosure above, a method of using slot boundaries to apply CI to TBoMS has been described as an example. However, this is for illustrative purposes only and does not limit the scope of the disclosure. The values ​​used as the basis for this method may be set by one or a combination of the following: slot boundary, nominal repetition boundary, actual repetition boundary, transmission occasion boundary, cancellation indication size, etc.

[0132] Furthermore, if a terminal is configured with a multi-slot push (TBoMS) consisting of a single TB via upper-layer signaling or L1 signaling from the base station, the terminal can ignore the received CI without applying it. It may also choose not to apply it, considering higher priority than the CI. In this case, flexible scheduling based on the base station is not possible, but terminal complexity can be improved.

[0133] [Method 2]

[0134] Method 2 describes the push transmission method and dynamic SFI application method when dynamic SFI is set for multi-slot push transmission (TBoMS) consisting of one TB.

[0135] Figure 11 shows an example of the operation of a terminal that performs push transmissions based on CI settings in a wireless communication system according to one embodiment of the present disclosure, with multi-slot push transmission (TBoMS) consisting of one TB.

[0136] Specifically, Figure 11 is a diagram illustrating the operation of a terminal performing push transmissions based on CI settings in a 5G system with multi-slot push transmission (TBoMS) consisting of one TB.

[0137] Referring to Figure 11, the TBoMS PUSCH transmission method is illustrated when a terminal is configured by a base station via upper-layer signaling or L1 signaling to perform a multi-slot PUSCH (TBoMS) consisting of one TB, and a dynamic SFI configured by DCI format 2_0 is configured to overlap in slot #2.

[0138] The terminal can receive configuration information from the base station, such as the number of slots k=4 for transmitting a multi-slot push (TBoMS) consisting of one TB via upper-layer signaling or L1 signaling, the start symbol S=6, the symbol length L=45 symbols, and the Time Domain Resource Allocation (TDRA) type B (1101 in Figure 11). Based on the above configured TBoMS information, one TBS#0 may transmit a TBoMS push across multi-slot slots #0 to #3. At this time, if the terminal receives a dynamic SFI 1103 from the base station in DCI format 2_0, and the received dynamic SFI overlaps in slot #2 and sets the symbol in slot #2 to downlink, the entire TBoMS push transmission may be canceled (1102 in Figure 11).

[0139] Furthermore, if the terminal is configured with k=4 for the number of slots, S=6 for the start symbol, L=45 for the symbol length, and Time Domain Resource Allocation (TDRA) type B for transmitting a multi-slot push (TBoMS) consisting of one TB from the base station via upper layer signaling or L1 signaling, then based on the above configured TBoMS information, one TBS#0 may transmit a TBoMS push across multi-slot slots #0 to #3. In this case, if the terminal receives a dynamic SFI1105 from the base station in DCI format 2_0, and the received dynamic SFI overlaps in slot #2 and sets the symbol of slot #2 to downlink, the terminal may not transmit only slot #2, which is part of the TBoMS, based on the slot boundary (1104 in Figure 11), and can transmit a TBoMS push using the uplink resources of the remaining slots #0, #1, and #3. In describing the embodiments of this disclosure as a whole, a method of using slot boundaries to apply dynamic SFI to TBoMS using DCI format 2_0 has been described as an example. However, this is for illustrative purposes only and does not limit the scope of this disclosure. The values ​​used as the basis for this method may be set by one or a combination of the following: slot boundary, nominal repetition boundary, actual repetition boundary, transmission occasion boundary, dynamic SFI symbol size, etc. Furthermore, in describing the embodiments of this disclosure as a whole, dynamic SFI settings using DCI format 2_0 may be set across multiple slots and PUSCH transmissions.

[0140] As an additional method, when TBoMS is configured by upper-layer signaling and L1 signaling, the terminal can ignore the application of dynamic SFI configured by DCI format 2_0. In this case, TBoMS can be supported while improving terminal complexity.

[0141] [Method 3]

[0142] Method 3 describes how to set the priority of push transmissions and how to perform push transmissions based on that priority when a multi-slot push transmission (TBoMS) consisting of a single TB is configured.

[0143] The terminal can receive multi-slot push (TBoMS) transmission configuration information, consisting of one TB, from the base station via upper-layer signaling or L1 signaling. At this time, the base station can set the TBoMS priority to a high priority (priority) of 1 for the terminal. In this case, if it overlaps with a push / puch transmission with a lower priority, the terminal may not transmit the push / puch with the lower priority. This method guarantees the reliability of TBoMS push transmissions and allows operation without adding additional terminal functions, thus improving terminal complexity.

[0144] Based on the methods of the above embodiments (Methods 1-3), a terminal can cancel and transmit only a portion of the TBoMS time resources once a multi-slot PUSCH (TBoMS) transmission consisting of one TB is configured by upper-layer signaling and L1 signaling, and CI and dynamic SFI are configured. Resources not transmitted by the above methods can be postponed and retransmitted by a configuration mode using upper-layer signaling and L1 signaling (e.g., count-based PUSCH configuration). The above-described methods of this disclosure provide CI, dynamic SFI, and PUSCH / PUCCH overlapping methods for TBoMS PUSCH transmissions to improve uplink coverage, thereby improving uplink coverage by obtaining energy gain through optimized resource configuration.

[0145] <Second Embodiment>

[0146] A second embodiment of this disclosure provides a method for controlling CI, dynamic SFI, and PUSCH / PUCCH overlaps with different priorities when performing simultaneous channel estimation for multiple PUSCHs. Although this disclosure focuses on PUSCH, such methods may also be applied to PUCCH / PDCCH / PDSCH / PSSCH / PSCCH transmissions.

[0147] [Method 1]

[0148] Method 1 describes the PUSCH transmission method and CI application method when CI is set for multiple PUSCH where simultaneous channel estimation is performed.

[0149] Figure 12 shows an example of the operation of a terminal that performs PUSCH transmission based on CI settings in a wireless communication system according to one embodiment of the present disclosure, where simultaneous channel estimation is performed for multiple PUSCH.

[0150] Specifically, Figure 12 shows the operation of a terminal that performs push transmissions based on CI settings in a 5G system where simultaneous channel estimation is performed for multiple pushes.

[0151] Referring to Figure 12, the terminal may be configured to perform repeated PUSCH transmissions via upper-layer signaling or L1 signaling from the base station, and the bundle size may be set to 4 slots as a setting for simultaneous channel estimation (1201 in Figure 12). In this case, simultaneous channel estimation is performed in Repe#1 to #4 based on the bundle size set for the configured repeated PUSCH transmission, and power constancy and phase continuity of repeated PUSCH transmissions Repe#1 to #4 can be maintained in order to perform simultaneous channel estimation. At this time, if CI1202 is set by upper-layer signaling and L1 signaling, the transmission of the entire symbol of Repe#3 from the first symbol of the CI may be canceled in Repe#3, where the configured CI overlaps (1203 in Figure 12). At this time, the phase continuity of Repe#1 to #2, part of Repe#3, and Repe#4 is not maintained by the repeated PUSCH transmission canceled by the configured CI. Therefore, based on the same transmission power setting, P with different phases PUSCH,0 and P' PUSCH,0 These settings can be applied starting from a cancelled PUSCH transmission. For repeated PUSCH transmissions, simultaneous channel estimation is performed in Repe#1~#2 and part of Repe#3 (1204 in Figure 12), single channel estimation is performed in Repe#4, and simultaneous channel estimation can be performed on a bundle size basis from Repe#5 onwards (1205 in Figure 12). With the above settings, part of Repe#3 may not be used for simultaneous channel and PUSCH transmissions depending on the settings and conditions for resource transmissions. The transmission power setting for Repe#4 configured above may be updated by settings and conditions (e.g., minimum processing time to apply the settings).

[0152] Furthermore, as described above, the terminal may be configured to perform repeated PUSCH transmissions via upper-layer signaling or L1 signaling from the base station, and the bundle size may be set to 4 slots as a setting value for simultaneous channel estimation (1201 in Figure 12). In this case, simultaneous channel estimation is performed in Repe#1 to #4 based on the bundle size set for the configured repeated PUSCH transmission, and power constancy and phase continuity of repeated PUSCH transmissions Repe#1 to #4 can be maintained in order to perform simultaneous channel estimation. At this time, if CI1206 is set by upper-layer signaling and L1 signaling, the transmission of the entire symbol of Repe#3 from the first symbol of the CI may be canceled in Repe#3, where the configured CI overlaps (1207 in Figure 12). At this time, the phase continuity of Repe#1 to #2, part of Repe#3, and Repe#4 will not be maintained due to the repeated PUSCH transmission canceled by the configured CI. In this case, simultaneous channeling can be initiated in Repe#4 starting from the cancelled PUSCH transmission of Repe#3, and PUSCH can be transmitted from Repe#4 with the same transmit power based on the bundle size. Therefore, starting from Repe#3, the transmit power settings are P PUSCH,0 and P PUSCH,1 This can be set. Subsequently, channel estimation for repeated push transmissions is performed simultaneously for Repe#1~#2 and part of Repe#3 (1209 in Figure 12), and from Repe#4 onwards, simultaneous channel estimation can be performed on a bundle size basis (1209 in Figure 12). With the above settings, part of Repe#3 may not be used for simultaneous channel and push transmissions depending on the settings and conditions for resource transmissions.

[0153] Finally, once the terminal is configured for simultaneous channel estimation via upper-layer signaling and L1 signaling, it can perform simultaneous channel estimation for multiple push transmissions by ignoring CI. In this case, operation is possible without implementing additional terminal functions, thus improving the complexity of the terminal.

[0154] The method disclosed herein defines a control method using CI for multiplexed push transmissions in which simultaneous channel estimation is performed, enabling improved uplink coverage through optimized simultaneous channel estimation. In describing the embodiments of the above disclosure, a method for applying CI to multiplexed push transmission type A in which simultaneous channel estimation is performed is described as an example, but this is merely illustrative and does not limit the scope of the disclosure. The above method can be used to apply to push transmission type B in which simultaneous channel estimation is performed as a reference value, to push transmissions composed of other TBs, to simultaneous channel estimation in TBoMS, etc.

[0155] [Method 2]

[0156] Method 2 describes a PUSCH transmission method and a dynamic SFI application method when dynamic SFI is set for multiple PUSCH where simultaneous channel estimation is performed.

[0157] Figure 13 shows an example of the operation of a terminal that performs PUSCH transmission based on dynamic SFI settings in a wireless communication system according to one embodiment of the present disclosure, where simultaneous channel estimation is performed for multiple PUSCH.

[0158] Figure 13 is a diagram illustrating the operation of a terminal that performs push transmissions based on dynamic SFI settings in a 5G system where simultaneous channel estimation is performed for multiple pushes.

[0159] Referring to Figure 13, the terminal may be configured for PUSCH repeat transmission by upper-layer signaling or L1 signaling, and the bundle size may be set to 4 slots as a setting for simultaneous channel estimation (1301 in Figure 13). In this case, simultaneous channel estimation is performed in Repe#1 to #4 based on the bundle size set for the configured PUSCH repeat transmission, and power constancy and phase continuity of PUSCH repeat transmissions Repe#1 to #4 can be maintained in order to perform simultaneous channel estimation. At this time, if dynamic SFI 1302 is set by DCI format 2_0, the transmission of Repe#3, which overlaps with the configured dynamic SFI, may be canceled (1303 in Figure 13). At this time, the phase continuity of Repe#1 to #2 and Repe#4 will not be maintained by the PUSCH repeat transmission canceled by the configured dynamic SFI. Therefore, based on the same transmit power setting, P with different phases PUSCH,0 and P' PUSCH,0 These can be applied starting from a cancelled PUSCH transmission. Channel estimation for repeated PUSCH transmissions is performed as simultaneous channel estimation in Repe#1 and #2 (1304 in Figure 13), as well as as single channel estimation in Repe#4, and as simultaneous channel estimation on a bundle size basis from Repe#5 onwards (1305 in Figure 13). The transmission power setting for Repe#4 configured above can be updated by settings and conditions (e.g., minimum processing time to apply the settings).

[0160] Furthermore, as described above, the terminal may be configured to perform repeated PUSCH transmissions via upper-layer signaling or L1 signaling from the base station, and the bundle size may be set to 4 slots as a setting value for simultaneous channel estimation (1301 in Figure 13). In this case, simultaneous channel estimation is performed in Repe#1~#4 (1308 in Figure 13) based on the bundle size set for the configured repeated PUSCH transmission, and power constancy and phase continuity of repeated PUSCH transmissions Repe#1~#4 can be maintained in order to perform simultaneous channel estimation. At this time, if dynamic SFI 1306 is set by DCI format 2_0, the transmission of Repe#3, which overlaps with the configured dynamic SFI, may be canceled (1307 in Figure 13). At this time, the phase continuity of Repe#1~#2 and Repe#4 will not be maintained by the repeated PUSCH transmission canceled by the configured dynamic SFI. In this case, simultaneous channeling can be initiated in Repe#4 using the canceled PUSCH transmission of Repe#3 as a starting point, 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~#2 and Repe#4~#5 are each P PUSCH,0 and P PUSCH,1 This can be set. Subsequently, channel estimation for repeated push transmissions is performed simultaneously for Repe#1 to #2 (1309 in Figure 13), and from Repe#4 onwards, simultaneous channel estimation can be performed on a bundle size basis (1309 in Figure 13). With the above settings, a portion of Repe#3 may not be used for simultaneous channel and push transmissions depending on the settings and conditions for resource transmission.

[0161] Finally, once the terminal is configured for simultaneous channel estimation via upper-layer signaling and L1 signaling, it can perform simultaneous channel estimation for multiple push transmissions in a way that ignores dynamic SFI. In this case, operation is possible without implementing additional functions of the terminal, thus improving terminal complexity.

[0162] The method of this disclosure defines a control method using dynamic SFI for multiplexed push transmissions in which simultaneous channel estimation is performed, enabling improved uplink coverage through optimized simultaneous channel estimation. In describing the embodiments of this disclosure as a whole, a method for applying dynamic SFI to multiplexed push transmission type A in which simultaneous channel estimation is performed is described as an example, but this is merely illustrative and does not limit the scope of this disclosure. Simultaneous channel estimation in push transmission type B in which simultaneous channel estimation is performed, simultaneous channel estimation in push transmissions composed of other TBs, simultaneous channel estimation in TBoMS, etc., can be applied as reference values ​​in the above method. Furthermore, in describing the embodiments of this disclosure as a whole, the dynamic SFI setting using DCI format 2_0 can be set across multiple slots and push transmissions.

[0163] [Method 3]

[0164] Method 3 describes how to set the priority of push transmissions and how to perform push transmissions based on the priority when multiple push transmissions with simultaneous channel estimation are configured.

[0165] The terminal can receive multiplexed push transmission configuration information from the base station, where simultaneous channel estimation is performed via upper-layer signaling or L1 signaling. At this time, the base station can set the priority of the multiplexed push transmission with simultaneous channel estimation to a high priority (priority = 1) for the terminal. In this case, if it overlaps with a push / pucc transmission with a lower priority, the terminal may not transmit the push / pucc transmission with the lower priority. This method guarantees the reliability of multiplexed push transmissions with simultaneous channel estimation and improves terminal complexity because it can operate without adding additional terminal functions.

[0166] Based on the methods of the above embodiments (Methods 1-3), when a terminal is configured to perform multiple push transmissions with simultaneous channel estimation by upper-layer signaling and L1 signaling, and CI and dynamic SFI are configured, it can cancel and transmit some of the push transmissions of the multiple push transmissions with simultaneous channel estimation. Furthermore, resources that are not transmitted by the above methods can be postponed and retransmitted by configuration modes using upper-layer signaling and L1 signaling (e.g., count-based push configuration). The above-described methods of this disclosure provide CI, dynamic SFI, and push / pucch overlapping methods for multiple push transmissions with simultaneous channel estimation to improve uplink coverage, thereby improving the accuracy of channel estimation and improving uplink coverage through optimized resource configuration for simultaneous channels.

[0167] <Third Embodiment>

[0168] A third embodiment of this disclosure can provide a method for controlling the CI and dynamic slot-format indication (SFI) settings of a multi-slot push transmit (TBoMS) consisting of a single TB and a push transmit in which simultaneous channel estimation is performed.

[0169] Figure 14 is a flowchart showing the operation of a base station controlling CI and dynamic SFI for a multi-slot push transmit (TBoMS) consisting of one TB and a push transmit where simultaneous channel estimation is performed, in a wireless communication system according to one embodiment of the present disclosure.

[0170] Specifically, Figure 14 is a flowchart illustrating the operation of a base station that controls CI and dynamic SFI in a multi-slot push transmit (TBoMS) and a push transmit with simultaneous channel estimation, which are configured with a single TB, according to various embodiments of the present disclosure.

[0171] The base station can transmit first configuration information for multi-slot transmit block processing (TB processing over multi-slot, TBoMS) or joint channel estimation via upper-layer signaling or L1 signaling (1401 in Figure 14). The first configuration information may include at least one of the following: the position of the start symbol, the length of the symbol, the number of multi-slots, information about the time-domain resource allocation type, and the bundle size for joint channel estimation. Subsequently, the base station can allocate resources that are actually transmittable for PUSCH transmission based on the first configuration information for TBoMS or joint channel estimation configured above (1402 in Figure 14). Subsequently, the base station can flexibly configure resources by transmitting second configuration information for CI or dynamic SFI to the terminal via upper-layer signaling or L1 signaling (1403 in Figure 14). Based on the second configuration information, the base station can determine whether to transmit the PUSCH resources to be transmitted (1404 in Figure 14). The second configuration information described above is information regarding the priority of PUSCH transmission resources, and whether a PUSCH transmission resource can transmit can be determined by whether or not it overlaps with other PUSCH transmission resources with different priorities or PUSCH transmission resources with different priorities. Subsequently, based on the second configuration information, at least one of TBoMS PUSCH transmissions, PUSCH transmissions, or PUSCH repeat transmissions can be received with resources that are actually available to transmit (1405 in Figure 14). Subsequently, based on the configured joint channel estimation configuration information described above, the base station can perform joint channel estimation on at least one of the received TBoMS PUSCH transmissions, PUSCH transmissions, or PUSCH repeat transmissions and perform decoding (1406 in Figure 14).

[0172] Figure 15 is a flowchart showing the operation of a terminal controlling CI and dynamic SFI for a multi-slot push transmit (TBoMS) consisting of one TB and a push transmit where simultaneous channel estimation is performed, in a wireless communication system according to one embodiment of the present disclosure.

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

[0174] The terminal can receive first configuration information from the base station via upper-layer signaling or L1 signaling for multi-slot transmit block processing (TB processing over multi-slot, TBoMS) or joint channel estimation (1501 in Figure 15). The first configuration information may include at least one of the following: the position of the start symbol, the length of the symbol, the number of multi-slots, information about the time-domain resource allocation type, and the bundle size for joint channel estimation. Subsequently, the terminal can allocate resources that are actually available for PUSCH transmission based on the first configuration information for TBoMS or joint channel estimation configured above (1502 in Figure 15). Subsequently, the terminal can receive second configuration information from the base station via upper-layer signaling or L1 signaling for CI or dynamic SFI and allocate resources (1503 in Figure 15). The second configuration information described above is information regarding the priority of PUSCH transmission resources, and whether a PUSCH transmission resource can transmit may be determined based on whether it overlaps with other PUSCH transmission resources with different priorities or with other PUSCH transmission resources with different priorities. Based on the second configuration information, the terminal can determine whether to transmit to the PUSCH resource being transmitted (1504 in Figure 15). Subsequently, based on the first configuration information, the terminal can be configured to maintain the constancy of the PUSCH transmission power and the continuity of the phase for at least one of TBoMS PUSCH transmission, PUSCH transmission, or PUSCH repetition transmission (1505 in Figure 15). Subsequently, based on the first configuration information, at least one of TBoMS transmission, PUSCH transmission, or PUSCH repetition transmission can be performed on resources that are actually available to transmit (1506 in Figure 15).

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

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

[0177] In other embodiments, the transceiver 1601 may consist of a transmitter and a receiver. The transceiver 1601 can transmit and receive signals with a base station. These signals may include control information and data. For this purpose, the transceiver 1601 may consist of an RF transmitter that upconverts and amplifies the frequency of the transmitted signal, and an RF receiver that low-noise amplifies the received signal and downconverts its frequency. The transceiver 1601 can also receive signals via a wireless channel, output them to the control unit 1602, and transmit signals output from the control unit 1602 via the wireless channel.

[0178] The control unit 1602 can control a series of processes by which the terminal 1600 can operate according to the embodiments of the present disclosure described above. For example, the control unit 1602 can modify the OFDM symbol position of the DMRS, taking into account the method of estimating a channel using DMRS transmitted by multiple PUSCHs simultaneously according to the embodiments of the present disclosure. To this end, the control unit 1602 may include at least one processor. For example, the control unit 1602 may include a communication processor (CP) that controls communication and an application processor (AP) that controls higher layers such as application programs.

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

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

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

[0182] In other embodiments, the transceiver 1701 may consist of a transmitter and a receiver. The transceiver 1701 can send and receive signals with a terminal. These signals may include control information and data. For this purpose, the transceiver 1701 may consist of an RF transmitter that upconverts and amplifies the frequency of the transmitted signal, and an RF receiver that low-noise amplifies the received signal and downconverts its frequency. The transceiver 1701 can also receive signals via a wireless channel, output them to the control unit 1702, and transmit signals output from the control unit 1702 via the wireless channel.

[0183] The control unit 1702 can control a series of processes that enable the base station 1700 to operate according to the embodiments of the present disclosure described above. For example, the control unit 1702 can modify the OFDM symbol position of the DMRS, taking into account the method of estimating the channel using the DMRS transmitted by PUSCH according to the embodiments of the present disclosure. To this end, the control unit 1702 may include at least one processor. For example, the control unit 1702 may include a communication processor (CP) that controls communication and an application processor (AP) that controls higher layers such as application programs.

[0184] The memory unit 1703 can store control information and data, such as channel estimation information, or control information and data received from a terminal, using DMRS transmitted via PUSCH determined by the base station 1700. It may also have an area for storing data necessary for controlling the control unit 1702, and data generated by the control unit 1702 during control. The memory unit 1703 may consist of volatile memory, non-volatile memory, or a combination of volatile and non-volatile memory.

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

[0186] When implemented in software, a computer-readable storage medium may be provided to store one or more programs (software modules). The one or more programs stored on 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 perform the methods according to the embodiments described in the claims or specification of this disclosure.

[0187] Such programs (software modules, software) can be stored in random access memory, non-volatile memory including flash memory, read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), magnetic disc storage devices, compact disc-ROMs (CD-ROMs), digital versatile discs (DVDs), or other forms of optical storage devices, magnetic cassettes, or in memory composed of some or all of these. Furthermore, each constituent memory may contain multiple instances.

[0188] Furthermore, the program may be stored in an attachable storage device that can be accessed through a communication network such as the Internet, intranet, LAN (local area network), WAN (wide area network), or SAN (storage area network), or a combination thereof. Such a storage device can access the device performing the embodiments of the disclosure via an external port. Alternatively, a separate storage device on the communication network can access the device performing the embodiments of the disclosure.

[0189] Although this disclosure has been illustrated and described with reference to various modes of implementation, it will be understood by those skilled in the art that various modifications in form and details may be made without departing from the spirit and scope of this disclosure as defined by the attached claims and equivalents. [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 devices 121 Serving Beam 130 devices 131 Serving Beam 301 First Symbol Pattern 302 Second Symbol Pattern 303 First Symbol Pattern 304 Second Symbol Pattern 801 Repeated transmission 802 cancellation indication (CI) 803 cancellation indication (CI) 805 Slot Format Indicator (SFI) 807 Send 1600 devices 1601 Transmitter / Receiver Unit 1602 Control Unit 1603 Storage section 1700 base station 1701 Transceiver Unit 1702 Control Unit 1703 Storage section

Claims

1. In a method performed by the UE (user equipment) of a wireless communication system, The step of receiving configuration information associated with a PUSCH (Physical Uplink Shared Channel) repetition from a base station via upper-layer signaling, wherein the configuration information is for a TBoMS (transport block processing over multi-slot) and includes at least one of the following: the index of the start symbol, the number of slots, or the time-domain resource allocation type; A step of transmitting a first PUSCH for the PUSCH repetition to the base station based on the configuration information associated with the PUSCH repetition; The step of identifying that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, the event being associated with the reception of DCI (downlink control information) including CI (cancellation indication) or dynamic SFI (slot format indication); and A method comprising the step of transmitting a second PUSCH to the base station for the PUSCH repetition after the event, based on the bundling settings included in the configuration information.

2. The PUCH repetition is stopped based on the event, The aforementioned event further includes overlap with a higher priority PUSCH transmission. The method according to claim 1, wherein the second PUSCH for the PUSCH repetition starts from the first symbol after the event.

3. In a method performed by a base station of a wireless communication system, The step of sending configuration information associated with a PUSCH (Physical Uplink Shared Channel) repetition to a UE (user equipment) via upper-layer signaling, wherein the configuration information is for a TBoMS (transport block processing over multi-slot) and includes at least one of the following: the index of the start symbol, the number of slots, or the time-domain resource allocation type; A step of receiving a first PUSCH for the PUSCH repeat from the UE based on the configuration information associated with the PUSCH repeat; The step of identifying that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, the event being associated with the transmission of DCI (downlink control information) including CI (cancellation indication) or dynamic SFI (slot format indication); and A method comprising the step of receiving a second PUSCH from the UE for the PUSCH repetition after the event, based on the bundling settings included in the configuration information.

4. The PUCH repetition is stopped based on the event, The aforementioned event further includes overlap with a higher priority PUSCH transmission. The method according to claim 3, wherein the second PUSCH for the PUSCH repetition starts from the first symbol after the event.

5. In the UE (user equipment) of a wireless communication system, At least one transceiver; A processor communicatively coupled to the at least one transceiver; and It includes at least one memory that is communicatively coupled to the at least one processor and stores instructions, The instructions are executed individually or in any combination by the at least one processor, and the UE is: The base station receives configuration information associated with a PUSCH (Physical Uplink Shared Channel) repetition via upper-layer signaling, and the configuration information is for TBoMS (transport block processing over multi-slot) and includes at least one of the following: the index of the start symbol, the number of slots, or the time-domain resource allocation type. A first PUSCH for the PUSCH repetition is transmitted to the base station based on the setting information associated with the PUSCH repetition. It is identified that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, and the event is associated with the reception of DCI (downlink control information) including CI (cancellation indication) or dynamic SFI (slot format indication). A UE that causes the base station to transmit a second PUSCH for repeating the PUSCH after the event, based on the bundling settings included in the configuration information.

6. The PUCH repetition is stopped based on the event, The aforementioned event further includes overlap with a higher priority PUSCH transmission. The UE according to claim 5, wherein the second PUSCH for the PUSCH repetition starts from the first symbol after the event.

7. In a base station of a wireless communication system, At least one transceiver; A processor communicatively coupled to the at least one transceiver; and It includes at least one memory that is communicatively coupled to the at least one processor and stores instructions, The instructions are executed individually or in any combination by the at least one processor, and the base station: UE (user equipment) is transmitted via upper-level signaling. PUSCH (Physical Uplink Shared Channel) transmits configuration information associated with a repetition, and the configuration information is for TBoMS (transport block processing over multi-slot) and includes at least one of the following: the index of the start symbol, the number of slots, or the time domain resource allocation type. The UE receives a first PUSCH for the PUSCH repetition based on the setting information associated with the PUSCH repetition, Identify that an event occurs that prevents the maintenance of phase continuity for the PUSCH repetition, and associate the event with the transmission of DCI (downlink control information) including CI (cancellation indication) or dynamic SFI (slot format indication). A base station that, based on the bundling settings included in the configuration information, receives a second PUSCH for the PUSCH repetition after the event from the UE.

8. The PUCH repetition is stopped based on the event, The aforementioned event further includes overlap with a higher priority PUSCH transmission. The base station according to claim 7, wherein the second PUSCH for the PUSCH repetition starts from the first symbol after the event.

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