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

Abstract

A method for a terminal to transmit an uplink channel in a wireless communication system according to an embodiment of the present specification includes the following steps: transmitting capability information related to a panel for the transmission of the uplink channel; receiving configuration information related to the transmission of the uplink channel; and transmitting the uplink channel based on the configuration information. Based on a conflict between the transmission of the uplink channel and the transmission of another uplink channel scheduled for the terminal in the time domain, i) when a first panel related to the transmission of the uplink channel and a second panel related to the transmission of the other uplink channel are different from each other, the uplink channel and the other uplink channel are transmitted simultaneously, and ii) when the first panel and the second panel are the same, the uplink channel is transmitted through a specific resource.

Description

Technical Field

[0001] The present disclosure relates to a method and an apparatus for transmitting and receiving an uplink channel in a wireless communication system. Background Art

[0002] Mobile communication systems have been developed to ensure user mobility while providing voice services. Mobile communication systems are expanding their services from voice only to data. The currently soaring data traffic is exhausting resources, and the users' demand for higher data rate services has led to a need for more advanced mobile communication systems.

[0003] There is a need for a next-generation mobile communication system to meet, for example, the handling of explosive growth of data traffic, a significant increase in the transmission rate per user, coping with a large number of connected devices, and supporting very low end-to-end latency and high energy efficiency. To this end, various research efforts are underway for various technologies such as dual connectivity, massive multiple-input multiple-output (MIMO), in-band full duplex, non-orthogonal multiple access (NOMA), ultra-wideband support, and device networking. Summary of the Invention

[0004] Technical Problem

[0005] The present disclosure provides a method for transmitting an uplink channel.

[0006] More specifically, a user equipment (UE) supporting simultaneous transmission across multiple panels (STxMP) may be configured with the transmission of multiple uplink channels overlapping in the time domain. The present disclosure provides a method for transmitting an uplink channel that can improve resource utilization in such a case.

[0007] The technical object of the present disclosure is not limited to the above technical object, and other technical objects not mentioned above will be clearly understood by those of ordinary skill in the art from the following description.

[0008] Technical Solution

[0009] In one aspect of the present disclosure, there is provided a method for a user equipment (UE) to transmit an uplink channel in a wireless communication system, the method including the steps of: transmitting capability information related to a panel for the transmission of an uplink channel; receiving configuration information related to the transmission of the uplink channel; and transmitting the uplink channel based on the configuration information.

[0010] Based on the transmission of the uplink channel conflicting with the transmission of another uplink channel scheduled for the UE in the time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

[0011] Based on the uplink channel having a lower priority than the other uplink channel, the uplink channel can be transmitted in a specific resource.

[0012] The specific resource can be located in the time domain of a preconfigured unit that is time-shifted from the transmission of the configured uplink channel.

[0013] The specific resource can be based on the resource configured for the other uplink channel.

[0014] Based on the uplink channel and the other uplink channel being the same type of uplink channel, the priority can be determined according to preconfigured priority rules.

[0015] The priority can be determined based on at least one of the following: 1) whether the corresponding uplink channel is scheduled based on the control resource set (CORESET) with the lowest ID; 2) whether the corresponding uplink channel is scheduled by downlink control information (DCI) based on a specific radio network temporary identifier (RNTI); 3) the periodicity related to the transmission of the corresponding uplink channel; 4) the type of information related to the corresponding uplink channel; and 5) whether the corresponding uplink channel is scheduled by a previous downlink control information (DCI) in the time domain.

[0016] If the uplink channel and the other uplink channel are transmitted simultaneously, the resources for transmitting the uplink channel and the other uplink channel can be based on 1) the same time-frequency domain or 2) the same time domain.

[0017] Based on all or part of the frequency domain configured for the transmission of the uplink channel not overlapping with all or part of the frequency domain configured for the transmission of the other uplink channel, the uplink channel and the other uplink channel can be transmitted simultaneously based on frequency division multiplexing (FDM).

[0018] The uplink channel and the other uplink channel transmitted simultaneously based on FDM can be transmitted based on at least one of frequency hopping or repetition.

[0019] Based on the frequency hopping boundaries configured for the uplink channel and the frequency hopping boundaries configured for the other uplink channel being the same, the uplink channel and the other uplink channel can be transmitted simultaneously based on frequency hopping and repetition.

[0020] The capability information can be related to whether simultaneous transmission across multiple panels (STxMP) is supported.

[0021] In another aspect of the present disclosure, there is provided a user equipment (UE) for transmitting an uplink channel in a wireless communication system. The UE includes: one or more transceivers; one or more processors configured to control the one or more transceivers; and one or more memories operatively connected to the one or more processors and configured to store instructions that perform operations when executed by the one or more processors for transmission of the uplink channel.

[0022] The operations include: transmitting capability information related to a panel for transmission of the uplink channel; receiving configuration information related to transmission of the uplink channel; and transmitting the uplink channel based on the configuration information.

[0023] Based on the transmission of the uplink channel conflicting in the time domain with the transmission of another uplink channel scheduled for the UE, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, then the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, then the uplink channel is transmitted in a specific resource.

[0024] In another aspect of the present disclosure, there is provided an apparatus including one or more memories and one or more processors operatively connected to the one or more memories.

[0025] The one or more processors are configured to allow the apparatus to transmit capability information related to a panel for transmission of the uplink channel, receive configuration information related to transmission of the uplink channel, and transmit the uplink channel based on the configuration information.

[0026] Based on the transmission of the uplink channel conflicting in the time domain with the transmission of another uplink channel scheduled for the user equipment (UE), i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, then the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, then the uplink channel is transmitted in a specific resource.

[0027] In another aspect of the present disclosure, there is provided one or more non-transitory computer-readable media storing one or more instructions.

[0028] The one or more instructions executable by one or more processors allow a user equipment (UE) to transmit capability information related to a panel for transmission of the uplink channel, receive configuration information related to transmission of the uplink channel, and transmit the uplink channel based on the configuration information.

[0029] The transmission of the uplink channel conflicts with the transmission of another uplink channel scheduled for the UE in the time domain. i) If a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, then the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

[0030] In another aspect of the present disclosure, a method for a base station to receive an uplink channel in a wireless communication system is provided. The method includes the steps of: receiving capability information related to a panel for the transmission of the uplink channel; transmitting configuration information related to the transmission of the uplink channel; and receiving the uplink channel based on the configuration information.

[0031] The transmission of the uplink channel conflicts with the transmission of another uplink channel scheduled for a user equipment (UE) in the time domain. i) If a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, then the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

[0032] In another aspect of the present disclosure, a base station for receiving an uplink channel in a wireless communication system is provided. The base station includes: one or more transceivers; one or more processors configured to control the one or more transceivers; and one or more memories operatively connected to the one or more processors and configured to store instructions that perform operations when the one or more processors execute the reception of the uplink channel.

[0033] The operations include: receiving capability information related to a panel for the transmission of the uplink channel; transmitting configuration information related to the transmission of the uplink channel; and receiving the uplink channel based on the configuration information.

[0034] The transmission of the uplink channel conflicts with the transmission of another uplink channel scheduled for a user equipment (UE) in the time domain. i) If a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, then the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

[0035] Beneficial effects

[0036] According to an embodiment of the present disclosure, if the transmission of an uplink channel conflicts with the transmission of another uplink channel scheduled for a UE in the time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

[0037] Therefore, 1) if the panels used for the transmission of each uplink channel are different, a UE supporting simultaneous transmission across multiple panels (STxMP) can improve the resource utilization in the transmission of uplink channels by transmitting multiple uplink channels simultaneously.

[0038] 2) If the panels used for the transmission of each uplink channel are the same, according to the existing method, only one uplink channel is transmitted and the remaining uplink channels are discarded. However, according to an embodiment of the present disclosure, no uplink channel is discarded. For example, an uplink channel with a low priority can be transmitted in a specific resource. Therefore, the utilization rate of the resources required for the scheduling of uplink channels is increased. That is, there is no need to transmit the scheduling information of the uplink channel again (discarded according to the existing method).

[0039] The effects that can be obtained by the present disclosure are not limited to the above effects, and those of ordinary skill in the art to which the present disclosure pertains can clearly understand other technical effects not described above from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings are included to provide a further understanding of the present disclosure and constitute a part of the detailed description. The drawings illustrate embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure.

[0041] Figure 1 is a diagram showing an example of the overall system structure of NR to which the method proposed in the present disclosure is applicable.

[0042] Figure 2 shows the relationship between an uplink frame and a downlink frame in a wireless communication system to which the method proposed in the present disclosure is applicable.

[0043] Figure 3 shows an example of a frame structure in an NR system.

[0044] Figure 4 shows an example of a resource grid supported by a wireless communication system to which the method proposed in the present disclosure is applicable.

[0045] Figure 5 shows an example of a resource grid and a parameter set of each antenna port to which the method proposed in the present disclosure is applicable.

[0046] Figure 6 Illustrates the physical channels and general signal transmissions used in a 3GPP system.

[0047] Figure 7 Illustrates an example of beamforming using SSB and CSI-RS.

[0048] Figure 8 Illustrates an example of the UL BM process using SRS.

[0049] Fig. 9 Is a flowchart illustrating an example of the UL BM process using SRS.

[0050] Fig.10 Is a flowchart illustrating an example of the uplink transmission / reception operations to which the method proposed in the present disclosure can be applied.

[0051] Fig.11 and Fig.12 Illustrates an example of an RF switch-based multi-panel applied to the present disclosure.

[0052] Fig.13 Illustrates an example of performing simultaneous transmission across multiple panels (STxMP) according to the method described in the present disclosure.

[0053] Fig.14 Illustrates another example of performing simultaneous transmission across multiple panels (STxMP) according to the method described in the present disclosure.

[0054] Fig.15 Illustrates an example of the signaling between a UE and a base station to which the method described in the present disclosure is applicable.

[0055] Fig.16 Is a flowchart illustrating a method for a UE to transmit an uplink channel in a wireless communication system according to an embodiment of the present disclosure.

[0056] Fig.17 Is a flowchart illustrating a method for a base station to receive an uplink channel in a wireless communication system according to another embodiment of the present disclosure.

[0057] Fig.18 Illustrates communication system 1 applied to the present disclosure.

[0058] Fig.19 Illustrates a wireless device applicable to the present disclosure.

[0059] Fig. 20 Illustrates a signal processing circuit for transmitting signals.

[0060] Fig.21 Illustrates another example of a wireless device applied to the present disclosure.

[0061] Fig. 22 Shows a handheld device to which the present disclosure is applied. Detailed implementation

[0062] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The following detailed description with reference to the accompanying drawings is intended to describe example embodiments of the present disclosure, and does not represent the only embodiments of the present disclosure. The following detailed description includes specific details to convey a thorough understanding of the present disclosure. However, those of ordinary skill in the art will readily understand that the embodiments of the present disclosure can be practiced even without these details.

[0063] In some cases, to avoid conceptual ambiguity, known structures or devices may be omitted or shown in block diagrams while focusing on the core features of each structure and device.

[0064] Hereinafter, the downlink (DL) means communication from the base station to the terminal, and the uplink (UL) means communication from the terminal to the base station. In the downlink, the transmitter may be part of the base station and the receiver may be part of the terminal. In the uplink, the transmitter may be part of the terminal and the receiver may be part of the base station. The base station may be represented as a first communication device, and the terminal may be represented as a second communication device. The base station (BS) may be replaced by terms including a fixed station, Node B, evolved Node B (eNB), next-generation Node B (gNB), base transceiver system (BTS), access point (AP), network (5G network), AI system, roadside unit (RSU), vehicle, robot, unmanned aerial vehicle (UAV), augmented reality (AR) device, virtual reality (VR) device, etc. In addition, the terminal may be fixed or mobile, and may be replaced by terms including user equipment (UE), mobile station (MS), user terminal (UT), mobile subscriber station (MSS), subscriber station (SS), advanced mobile station (AMS), wireless terminal (WT), machine-type communication (MTC) device, machine-to-machine (M2M) device, and device-to-device (D2D) device, vehicle, robot, AI module, unmanned aerial vehicle (UAV), augmented reality (AR) device, virtual reality (VR) device, etc.

[0065] The following technologies can be used in various wireless access systems, such as Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-Carrier FDMA (SC-FDMA), Non-Orthogonal Multiple Access (NOMA), etc. CDMA can be implemented by radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented by radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented as radio technologies such as IEEE802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, E-UTRA (Evolved UTRA), etc. UTRA is part of the Universal Mobile Telecommunications System (UMTS). As part of the Evolved UMTS (E-UMTS) using E-UTRA, the 3rd Generation Partnership Project (3GPP) Long-Term Evolution (LTE) adopts OFDMA in the downlink and SC-FDMA in the uplink. LTE-A (advanced) is the evolution of 3GPP LTE.

[0066] For the sake of clear description, this disclosure is described based on 3GPP communication systems (such as LTE-A or NR), but the technical spirit of this disclosure is not limited thereto. LTE refers to the technologies after 3GPP TS 36.xxx Release 8. Specifically, the LTE technologies after 3GPP TS36.xxx Release 10 are called LTE-A, and the LTE technologies after 3GPP TS 36.xxx Release 13 are called LTE-Apro. 3GPP NR refers to the technologies after TS 38.xxx Release 15. LTE / NR can be called 3GPP systems. "xxx" means the detailed number of the standard document. LTE / NR can be collectively referred to as 3GPP systems. For the background technologies, terms, abbreviations, etc. used to describe this disclosure, reference can be made to the matters disclosed in the standard documents made public before this disclosure. For example, the following documents can be referred to.

[0067] 3GPP LTE

[0068] -36.211: Physical Channels and Modulation

[0069] -36.212: Multiplexing and Channel Coding

[0070] -36.213: Physical Layer Procedures

[0071] -36.300: General Description

[0072] -36.331: Radio Resource Control (RRC)

[0073] 3GPP NR

[0074] -38.211: Physical Channels and Modulation

[0075] -38.212: Multiplexing and Channel Coding

[0076] -38.213: Physical Layer Procedures for Control

[0077] -38.214: Physical Layer Procedures for Data

[0078] -38.300: NR and NG-RAN General Description

[0079] -38.331: Radio Resource Control (RRC) Protocol Specification

[0080] As more and more communication devices require greater communication capacity, improved mobile broadband communication is needed compared to existing radio access technologies (RATs). In addition, massive machine-type communication (MTC), which provides various services anytime and anywhere by connecting many devices and objects, is one of the main issues to be considered in next-generation communication. Additionally, the design of communication systems considering services / UEs that are sensitive to reliability and latency is being discussed. Therefore, the introduction of a next-generation radio access technology that considers enhanced mobile broadband communication (eMBB), massive MTC (mMTC), and ultra-reliable low-latency communication (URLLC) is discussed, and in this disclosure, for convenience, this technology is referred to as NR. NR is an expression representing an example of a 5G radio access technology (RAT).

[0081] The three main requirement areas of 5G include (1) the enhanced mobile broadband (eMBB) area, (2) the massive machine-type communication (mMTC) area, and (3) the ultra-reliable low-latency communication (URLLC) area.

[0082] Some use cases may require multiple areas to be optimized, while other use cases may focus only on one key performance indicator (KPI). 5G supports these various use cases in a flexible and reliable manner.

[0083] eMBB far exceeds basic mobile Internet access and encompasses rich two-way tasks, media, and entertainment applications in the cloud or augmented reality. Data is a key driver for 5G, and dedicated voice services may not be seen for the first time in the 5G era. In 5G, it is expected that voice will be processed as an application using the data connection simply provided by the communication system. The main reasons for the increased traffic include the increase in content size and the increase in the number of applications that require high data transfer rates. As more and more devices are connected to the Internet, streaming services (audio and video), conversational video, and mobile Internet connections will be used more widely. Many of these applications require always-on connections to push real-time information and notifications to users. There has been a sudden increase in cloud storage and applications in the mobile communication platform, and this can be applied to both business and entertainment. In addition, cloud storage is a special use case that drives the growth of the uplink data transfer rate. 5G is also used for remote cloud services. When using a haptic interface, lower end-to-end latency is required to maintain an excellent user experience. Entertainment (e.g., cloud gaming and video streaming) is another key factor that increases the demand for mobile broadband capabilities. Entertainment is essential in smartphones and tablets anywhere in high-mobility environments, including trains, vehicles, and airplanes. Another use case is augmented reality and information search for entertainment. In this case, augmented reality requires very low latency and instant amounts of data.

[0084] In addition, one of the most anticipated 5G use cases involves the ability to smoothly connect embedded sensors in all fields (i.e., mMTC). By 2020, it is expected that the number of potential IoT devices will reach 20.4 billion. Industrial IoT is one of the areas where 5G plays a major role in enabling smart cities, asset tracking, smart public facilities, agriculture, and security infrastructure.

[0085] URLLC includes new services that will transform industries through the remote control of critical infrastructure and links with ultra-reliability / low available latency, such as self-driving vehicles. For smart grid control, industrial automation, robotics, drone control and regulation, the levels of reliability and latency are crucial.

[0086] Describe multiple use cases in more detail.

[0087] 5G can supplement Fiber to the Home (FTTH) and cable-based broadband (or DOCSIS) as a means of providing streams with evaluations from gigabits per second to hundreds of megabits per second. In addition to virtual reality and augmented reality, such high speeds are required to transmit TVs with a resolution of 4K or higher (6K, 8K or higher). Virtual reality (VR) and augmented reality (AR) applications include immersive sports events. Specific applications may require special network configurations. For example, in the case of VR games, in order to minimize latency, the core server of the game company may need to be integrated with the edge network server of the network operator.

[0088] Along with many use cases for automotive mobile communications, cars are expected to be an important new driver in 5G. For example, the entertainment of passengers requires both high-capacity and high-mobility mobile broadband at the same time. The reason is that future users continuously expect high-quality connections regardless of their location and speed. Another example of use in the automotive field is the augmented reality dashboard. The augmented reality dashboard will identify objects in the dark and overlay and display information about the distance and movement of the objects on top of what the driver sees through the front window. In the future, wireless modules enable communication between cars, information exchange between cars and the supported infrastructure, and information exchange between cars and other connected devices (e.g., devices carried by pedestrians). The safety system guides alternative routes of travel so that the driver can drive more safely, thus reducing the risk of accidents. The next step will be remote-controlled or self-driving vehicles. This requires very reliable and very fast communication between different self-driving vehicles and between cars and the infrastructure. In the future, self-driving vehicles can perform all driving activities, and the driver will focus on things other than traffic that the car itself cannot identify. The technical requirements for self-driving vehicles require ultra-low latency and ultra-high-speed reliability to increase traffic safety to a level that humans cannot achieve.

[0089] Smart cities and smart homes, referred to as the intelligent society, will be embedded as high-density radio sensor networks. The distributed network of smart sensors will identify the costs of the city or home and the conditions for energy-saving maintenance. A similar configuration can be implemented for each home. Temperature sensors, window and heating controllers, burglar alarms, and household appliances are all wirelessly connected. Many of these sensors typically have low data transfer rates, low energy consumption, and low cost. However, for example, certain types of surveillance devices may require real-time HD video.

[0090] The consumption and distribution of energy, including heat or gas, is highly distributed, thus requiring automated control of a distributed sensor network. The smart grid collects information and interconnects these sensors using digital information and communication technologies so that the sensors operate based on this information. This information can include the behavior of suppliers and consumers, so the smart grid can improve the distribution of fuels such as electricity in an efficient, reliable, economical, production-sustainable, and automated manner. The smart grid can be regarded as another sensor network with low latency.

[0091] The health sector has many applications that benefit from mobile communication. Communication systems can support teletherapy that provides clinical treatment in remote locations. This helps reduce the barrier of distance and can improve access to medical services that cannot be continuously used in remote rural areas. In addition, this is used to save lives in critical treatments and emergencies. Radio sensor networks based on mobile communication can provide remote monitoring and sensors for parameters such as heart rate and blood pressure.

[0092] Radio and mobile communication are becoming increasingly important in the field of industrial applications. Cabling requires high installation and maintenance costs. Therefore, in many industrial fields, the possibility of replacing cables with reconfigurable radio links is an attractive opportunity. However, realizing this possibility requires radio connections to operate with similar latency, reliability, and capacity as cables and simplified management. Low latency and low error probability are new requirements for 5G connections.

[0093] Logistics and freight tracking are important use cases of mobile communication, which allow the tracking of inventory and parcels anywhere using location-based information systems. Logistics and freight tracking use cases generally require low data speeds but require a wide area and reliable location information.

[0094] In a new RAT system including NR, an OFDM transmission scheme or a similar transmission scheme is used. The new RAT system can follow OFDM parameters different from those of LTE. Alternatively, the new RAT system can follow the parameter set of traditional LTE / LTE-A as it is or have a larger system bandwidth (e.g., 100 MHz). Alternatively, a cell can support multiple parameter sets. In other words, UEs operating with different parameter sets can coexist in a cell.

[0095] A parameter set corresponds to a subcarrier spacing in the frequency domain. Different parameter sets can be defined by scaling the reference subcarrier spacing by an integer N.

[0096] Definition of terms

[0097] eLTE eNB: eLTE eNB is the evolution of eNB that supports connectivity with EPC and NGC.

[0098] gNB: A node that supports NR and connectivity to the NGC.

[0099] New RAN: A radio access network that supports NR or E-UTRA or an interface to the NGC.

[0100] Network slice: A network slice is a network defined by an operator and is customized to provide an optimized solution for a specific market scenario with specific requirements that have an end-to-end scope.

[0101] Network function: A network function is a logical node within the network infrastructure that has well-defined external interfaces and well-defined functional behavior.

[0102] NG-C: A control plane interface used at the NG2 reference point between the New RAN and the NGC.

[0103] NG-U: A user plane interface used at the NG3 reference point between the New RAN and the NGC.

[0104] Non-standalone NR: A deployment configuration where the gNB requires an LTE eNB as an anchor for control plane connectivity to the EPC or requires an eLTE eNB as an anchor for control plane connectivity to the NGC.

[0105] Non-standalone E-UTRA: A deployment configuration where the eLTE eNB requires a gNB as an anchor for control plane connectivity to the NGC.

[0106] User plane gateway: An endpoint of the NG-U interface.

[0107] System Overview

[0108] Figure 1 An example showing the overall NR system architecture to which the method proposed in this disclosure can be applied.

[0109] Refer to Figure 1 , the NG-RAN consists of gNBs that provide the control plane (RRC) protocol end for user equipment (UE) and the NG-RA user plane (new AS sublayer / PDCP / RLC / MAC / PHY).

[0110] The gNBs are interconnected via the Xn interface.

[0111] The gNBs are connected to the NGC via the NG interface.

[0112] More specifically, the gNB is connected to the Access and Mobility Management Function (AMF) via the N2 interface and to the User Plane Function (UPF) via the N3 interface.

[0113] New RAT (NR) parameter set and frame structure

[0114] In the NR system, multiple parameter sets can be supported. Here, a parameter set can be defined by the subcarrier spacing and the cyclic prefix (CP) overhead. At this time, multiple subcarrier spacings can be derived by scaling the basic subcarrier spacing by an integer N (or μ). In addition, although it is assumed that very low subcarrier spacings are not used at very high carrier frequencies, the parameter sets that can be used can be selected independently of the frequency band.

[0115] In addition, in the NR system, various frame structures can be supported according to multiple parameter sets.

[0116] Hereinafter, the orthogonal frequency division multiplexing (OFDM) parameter sets and frame structures that can be considered in the NR system will be described.

[0117] The multiple OFDM parameter sets supported in the NR system can be defined as shown in Table 1.

[0118] [Table 1]

[0119] μ <![CDATA[Δf = 2 μ · 15 [kHz]]]> Cyclic prefix 0 15 normal 1 30 normal 2 60 Normal, Extended 3 120 normal 4 240 normal

[0120] NR supports multiple parameter sets (or subcarrier spacings (SCS)) to support various 5G services. For example, if the SCS is 15 kHz, NR supports a wide area in a typical cellular band. If the SCS is 30 kHz / 60 kHz, NR supports dense urban areas, lower latency, and wider carrier bandwidths. If the SCS is 60 kHz or higher, NR supports bandwidths greater than 24.25 GHz to overcome phase noise.

[0121] The NR frequency bands are defined as two types of frequency ranges, FR1 and FR2. FR1 and FR2 can be configured as shown in Table 1 below. In addition, FR2 can refer to millimeter wave (mmW).

[0122] [Table 2]

[0123] Frequency range specification Corresponding frequency range Subcarrier spacing FR1 410MHz-7125MHz 15,30,60kHz FR2 24250MHz-52600MHz 60,120,240kHz

[0124] Regarding the frame structure in the NR system, various fields in the time domain are represented as multiples of the time unit T s = 1 / (Δf max ·N f ), where Δf max = 480·10 3 , and N f = 4096. Downlink transmission and uplink transmission are composed of radio frames with a period of T f = (Δf max N f / 100)·T s = 10 ms. Here, a radio frame is composed of each having T sf = (Δfmax N f ( / 1000)·T s It is composed of 10 sub - frames with a period of 1 ms. In this case, there can be a set of frames for the uplink and a set of frames for the downlink.

[0125] Figure 2 Shows the relationship between the uplink frame and the downlink frame in a wireless communication system to which the method described in this disclosure is applicable.

[0126] As Figure 2 shown, the uplink frame number i for transmission from a user equipment (UE) should start T earlier than the start of the downlink frame by the UE TA = N TA T s starting.

[0127] For a parameter set μ, the time slots are numbered in ascending order in a sub - frame and in ascending order in a radio frame. A time slot includes of continuous OFDM symbols, and is determined according to the parameter set and time - slot configuration used. In a sub - frame, the start of the time slot is aligned in time with the start of in time.

[0128] Not all UEs can transmit and receive simultaneously, which means that not all OFDM symbols in a downlink time slot or an uplink time slot can be used.

[0129] Table 3 shows the number of OFDM symbols per time slot, the number of time slots per radio frame and the number of time slots per sub - frame in the normal CP. Table 4 shows the number of OFDM symbols per time slot, the number of time slots per radio frame, and the number of time slots per sub - frame in the extended CP.

[0130] [Table 3]

[0131]

[0132] [Table 4]

[0133]

[0134] Figure 3 Shows an example of the frame structure in the NR system. Figure 3 It is only for convenience of illustration and does not limit the scope of this disclosure.

[0135] In Table 4, in the case of μ = 2, that is, as an example where the subcarrier spacing (SCS) is 60 kHz, one subframe (or frame) may include four time slots as shown in Table 3, and Figure 3 the shown one subframe = {1, 2, 4} time slots. For example, the number of time slots that can be included in one subframe may be defined as in Table 3.

[0136] In addition, a mini - slot may consist of 2, 4, or 7 symbols, or may consist of more or fewer symbols.

[0137] Regarding the physical resources in the NR system, antenna ports, resource grids, resource elements, resource blocks, carrier parts, etc. may be considered.

[0138] Hereinafter, the above - mentioned physical resources that can be considered in the NR system will be described in more detail.

[0139] First, regarding antenna ports, an antenna port is defined such that the channel of the symbol on the transmitting antenna port can be inferred from the channel of another symbol on the same transmitting antenna port. When the large - scale properties of the channel of the symbol on one transmitting antenna port can be inferred from the channel of the symbol on another antenna port, the two antenna ports can be considered to be in a quasi - co - located or quasi - co - incident (QC / QCL) relationship. Here, the large - scale properties may include at least one of delay spread, Doppler spread, frequency shift, average received power, and reception timing.

[0140] Figure 4 An example of the resource grid supported in the wireless communication system to which the method proposed in the present disclosure is applicable is shown.

[0141] Referring to Figure 4 , the resource grid consists of sub - carriers in the frequency domain, and each subframe consists of 14·2 μ OFDM symbols, but the present disclosure is not limited thereto.

[0142] In the NR system, the transmitted signal is described by one or more resource grids including sub - carriers and OFDM symbols, where represents the maximum transmission bandwidth and can change not only between parameter sets but also between the uplink and the downlink.

[0143] In this case, as Figure 5 shown, one resource grid can be configured per parameter set μ and antenna port p.

[0144] Figure 5 An example of the resource grid and parameter set for each antenna port to which the method proposed in the present disclosure is applicable is shown.

[0145] Each element of the resource grid for parameter set μ and antenna port p is called a resource element and is uniquely identified by an index pair where is the index in the frequency domain indicating the position of the symbol in the subframe. The index pair (k, l) is used to indicate the resource element in the time slot, where

[0146] The resource element for parameter set μ and antenna port p corresponds to a complex value When there is no risk of confusion or when no specific antenna port or parameter set is specified, the indices p and μ can be discarded. As a result, the complex value can be or

[0147] In addition, a physical resource block is defined as consecutive subcarriers in the frequency domain.

[0148] Point A is used as a common reference point for the resource block grid and can be obtained as follows.

[0149] - offsetToPointA for the PCell downlink represents the frequency offset between point A and the lowest subcarrier of the lowest resource block that overlaps with the SS / PBCH block used by the UE for initial cell selection and is expressed in units of resource blocks. For FR1, a 15 kHz subcarrier spacing is assumed, and for FR2, a 60 kHz subcarrier spacing is assumed.

[0150] - absoluteFrequencyPointA represents the frequency position of point A expressed in absolute radio frequency channel number (ARFCN).

[0151] For subcarrier spacing configuration μ, the common resource blocks are numbered upward starting from 0 in the frequency domain.

[0152] The center of subcarrier 0 of the common resource block 0 for subcarrier spacing configuration μ coincides with "point A". The common resource block number in the frequency domain and the resource element (k, l) for subcarrier spacing configuration μ can be given by Equation 1 below.

[0153] [Equation 1]

[0154]

[0155] Here, k can be defined relative to point A such that k = 0 corresponds to the subcarrier centered at point A. The physical resource block is defined within the bandwidth part (BWP) and is numbered from 0 to where i is the number of the BWP. The physical resource block n in BWP i PRB corresponds to the common resource block nCRB The relationship between them can be given by Equation 2 below.

[0156] [Equation 2]

[0157]

[0158] Here, may be a common resource block, where the BWP starts relative to the common resource block 0.

[0159] Physical channels and general signaling

[0160] Figure 6 shows the physical channels and general signal transmissions used in the 3GPP system. In a wireless communication system, the UE receives information from the eNB via the downlink (DL), and the UE sends information to the eNB via the uplink (UL). The information transmitted and received by the eNB and the UE includes data and various control information, and there are various physical channels according to the type / usage of the information transmitted and received by the eNB and the UE.

[0161] When the UE is powered on or newly enters a cell, the UE performs an initial cell search operation (e.g., synchronizes with the eNB) (S601). For this purpose, the UE can receive the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) from the eNB and synchronize with the eNB, and obtain information such as the cell ID. Thereafter, the UE can receive the physical broadcast channel (PBCH) from the eNB and obtain the in-cell broadcast information. In addition, the UE receives the downlink reference signal (DL RS) in the initial cell search step to check the downlink channel state.

[0162] The UE that has completed the initial cell search receives the physical downlink control channel (PDCCH) and the physical downlink shared channel (PDSCH) according to the information loaded on the PDCCH to obtain more specific system information (S602).

[0163] In addition, when there is no radio resource for the UE to first access the eNB or for signal transmission, the UE can perform a random access procedure (RACH) on the eNB (S603 to S606). For this purpose, the UE can send a specific sequence to the preamble via the physical random access channel (PRACH) (S603 and S605) and receive a response message to the preamble (random access response (RAR) message) via the PDCCH and the corresponding PDSCH. In the case of contention-based RACH, a contention resolution process (S606) can be additionally performed.

[0164] The UE that executes the above process can then perform PDCCH / PDSCH reception (S607) and Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) transmission (S608) as a general uplink / downlink signal transmission process. Specifically, the UE can receive Downlink Control Information (DCI) through the PDCCH. Here, the DCI can include control information such as resource allocation information of the UE, and can be applied in different formats according to the usage purpose.

[0165] In addition, the control information sent by the UE to the eNB through the uplink or received by the UE from the eNB can include downlink / uplink ACK / NACK signals, Channel Quality Indicator (CQI), Precoding Matrix Index (PMI), Rank Indicator (RI), etc. The UE can send control information such as CQI / PMI / RI through the PUSCH and / or PUCCH.

[0166] Beam Management (BM)

[0167] The BM process, as a layer 1 (L1) / layer 2 (L2) process for obtaining and maintaining a set of base station (e.g., gNB, TRP, etc.) and / or terminal (e.g., UE) beams available for downlink (DL) and uplink (UL) transmission / reception, can include the following processes and terms.

[0168] - Beam measurement: The operation of measuring the characteristics of the beamformed signal received by the eNB or UE.

[0169] - Beam determination: The operation of the eNB or UE selecting the transmit (Tx) beam / receive (Rx) beam of the eNB or UE.

[0170] - Beam scanning: The operation of covering a spatial area with transmit and / or receive beams within a time interval according to a predetermined scheme.

[0171] - Beam reporting: The operation of the UE reporting information on the beamformed signal based on beam measurement.

[0172] The BM process can be divided into (1) a DL BM process using Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) block or CSI-RS and (2) a UL BM process using Sounding Reference Signal (SRS). In addition, each BM process can include a Tx beam scanning for determining the Tx beam and an Rx beam scanning for determining the Rx beam.

[0173] Downlink Beam Management (DL BM)

[0174] The DL BM process may include (1) the transmission of beamformed DL reference signals (RSs) (e.g., CIS-RS or SS blocks (SSBs)) by the eNB and (2) beam reporting by the UE.

[0175] Here, the beam report preferably includes a DL RS identifier (ID) and the L1 reference signal received power (RSRP).

[0176] The DL RS ID can be an SSB resource indicator (SSBRI) or a CSI-RS resource indicator (CRI).

[0177] Figure 7 An example of beamforming using SSBs and CSI-RSs is shown.

[0178] As Figure 7 shown, SSB beams and CSI-RS beams can be used for beam measurements. The measurement metric is the L1-RSRP per resource / block. SSBs can be used for coarse beam measurements and CSI-RSs can be used for fine beam measurements. SSBs can be used for both Tx beam scanning and Rx beam scanning. Rx beam scanning using SSBs can be performed while the UE changes its Rx beam across multiple SSB bursts for the same SSBRI. One SS burst includes one or more SSBs, and one SS burst set includes one or more SSB bursts.

[0179] DL BM related beam indication

[0180] The UE can be RRC-configured with a list of at most M candidate transmission configuration indicator (TCI) states for at least the purpose of quasi-co-location (QCL) indication, where M can be 64.

[0181] Each TCI state can be configured with a set of RSs. Each ID of the DL RSs in the set of RSs for the purpose of spatial QCL (QCL type D) can refer to one of the DL RS types such as SSB, P-CSI RS, SP-CSI RS, A-CSI RS, etc.

[0182] Initialization / updating of the IDs of the DL RSs in the set of RSs for at least the purpose of spatial QCL can be performed at least via explicit signaling.

[0183] Table 5 shows an example of the TCI-State IE.

[0184] The TCI-State IE associates one or two DL reference signals (RSs) with the corresponding quasi-co-location (QCL) types.

[0185] [Table 5]

[0186]

[0187] In Table 5, the bwp-Id parameter indicates the DL BWP where the RS is located, the cell parameter indicates the carrier where the RS is located, and the reference signal parameter indicates the reference antenna port that is the quasi-co-location source for the corresponding target antenna port or the reference signal including it. The target antenna port can be CSI-RS, PDCCH DMRS, or PDSCH DMRS. As an example, to indicate the QCL reference RS information regarding NZP CSI-RS, the corresponding TCI state ID can be indicated in the NZP CSI-RS resource configuration information. As another example, to indicate the QCL reference information regarding the PDCCH DMRS antenna port, the TCI state ID can be indicated in each CORESET configuration. As another example, to indicate the QCL reference information regarding the PDSCH DMRS antenna port, the TCI state ID can be indicated via DCI.

[0188] Quasi-isotope (QCL)

[0189] An antenna port is defined such that the channel of a symbol on the transmitting antenna port can be inferred from the channel of another symbol on the same transmitting antenna port. When the nature of the channel of a symbol transmitted on one antenna port can be inferred from the channel of a symbol transmitted on another antenna port, these two antenna ports can be considered to have a quasi-co-location or quasi-coincidence (QC / QCL) relationship.

[0190] The channel properties include one or more of delay spread, Doppler spread, frequency / Doppler shift, average received power, receive timing / average delay, and spatial RX parameters. The spatial Rx parameter means a spatial (receive) channel property parameter such as the angle of arrival.

[0191] The UE can be configured with a list of up to M TCI state configurations within the higher layer parameter PDSCH-Config to decode the PDSCH based on the detected PDCCH with DCI intended for the corresponding UE and a given serving cell, where M depends on the UE capability.

[0192] Each TCI state contains parameters for configuring the quasi-co-location relationship between one or two DL reference signals and the DM-RS port of the PDSCH.

[0193] The quasi-co-location relationship is configured by the higher layer parameter qcl-Type1 of the first DL RS and qcl-Type2 of the second DL RS. For the case of two DL RSs, regardless of whether the references are the same DL RS or different DL RSs, the QCL types are different.

[0194] The quasi - co - location type corresponding to each DL RS is given by the higher - layer parameter qcl - Type of QCL - Info and can take one of the following values:

[0195] - “QCL - TypeA”: {Doppler shift, Doppler spread, average delay, delay spread}

[0196] - “QCL - TypeB”: {Doppler shift, Doppler spread}

[0197] - “QCL - TypeC”: {Doppler shift, average delay}

[0198] - “QCL - TypeD”: {Spatial Rx parameter}

[0199] For example, if the target antenna port is a specific NZP CSI - RS, the corresponding NZP CSI - RS antenna port can be indicated / configured to be QCL with a specific TRS according to QCL - TypeA and QCL with a specific SSB according to QCL - TypeD. The UE that receives the indication / configuration can use the Doppler or delay values measured in the QCL - TypeA TRS to receive the corresponding NZP CSI - RS, and can apply the Rx beam used for QCL - TypeD SSB reception to the reception of the corresponding NZP CSI - RS.

[0200] The UE can receive an enabling command via MAC CE signaling used to map up to 8 TCI states to the code points of the DCI field “transmission configuration indication”.

[0201] UL BM process

[0202] The UL BM can be configured such that beam reciprocity (or beam correspondence) between the Tx beam and the Rx beam is established or not established according to the UE implementation. If beam reciprocity between the Tx beam and the Rx beam is established in both the base station and the UE, the UL beam pair can be adjusted via the DL beam pair. However, if beam reciprocity between the Tx beam and the Rx beam is not established in either the base station or the UE, additional processing for determining the UL beam pair is required in addition to determining the DL beam pair.

[0203] Even when beam correspondence is maintained in both the base station and the UE, the base station can use the UL BM procedure to determine the DL Tx beam even if the UE does not request (preferably) the reporting of the beam.

[0204] UM BM can be performed via beamformed UL SRS transmission, and whether to apply UL BM for an SRS resource set is configured by (higher layer parameter) usage. If usage is set to "BeamManagement (BM)", only one SRS resource can be sent to each of multiple SRS resource sets at a given moment.

[0205] The UE can be configured with one or more sounding reference symbol (SRS) resource sets configured by (higher layer parameter) SRS-ResourceSet (via higher layer signaling, RRC signaling, etc.). For each SRS resource set, the UE can be configured with K ≥ 1 SRS resources (higher layer parameter SRS-resource), where K is a natural number, and the maximum value of K is indicated by SRS_capability.

[0206] In the same way as DL BM, the UL BM process can be divided into Tx beam scanning of the UE and Rx beam scanning of the base station.

[0207] Figure 8 An example of the UL BM process using SRS is shown.

[0208] More specifically, Figure 8 (a) of shows the Rx beam determination process of the base station, Figure 8 (b) of shows the Tx beam scanning process of the UE.

[0209] Fig. 9 is a flowchart showing an example of the UL BM process using SRS.

[0210] - The UE receives RRC signaling (e.g., SRS-Config IE) including the (higher layer parameter) usage parameter set to "beam management" from the base station in S910.

[0211] Table 6 shows an example of the SRS-Config information element (IE), and the SRS-Config IE is used for SRS transmission configuration. The SRS-Config IE contains a list of SRS resources and a list of SRS resource sets. Each SRS resource set means a collection of SRS resources.

[0212] The network can trigger the transmission of an SRS resource set using the configured aperiodicSRS-ResourceTrigger (L1 DCI).

[0213] [Table 6]

[0214]

[0215] In Table 6, "usage" is a higher layer parameter that indicates whether the SRS resource set is for beam management or for codebook - based or non - codebook - based transmission. The "usage" parameter corresponds to the L1 parameter "SRS - SetUse". "spatialRelationInfo" is a parameter that configures the spatial relationship between the reference RS and the target SRS. The reference RS can be an SSB, CSI - RS, or SRS corresponding to the L1 parameter "SRS - SpatialRelationInfo". Each SRS resource set configures "usage".

[0216] - The UE determines the Tx beam for the SRS resource to be transmitted based on the SRS - SpatialRelation Info included in the SRS - Config IE in S920. The SRS - SpatialRelation Info is configured per SRS resource and indicates for each SRS resource whether to apply the same beam as the beam for the SSB, CSI - RS, or SRS. In addition, SRS - SpatialRelationInfo may or may not be configured in each SRS resource.

[0217] - If SRS - SpatialRelationInfo is configured in the SRS resource, the same beam as the beam for the SSB, CSI - RS, or SRS is applied for transmission. However, if SRS - SpatialRelationInfo is not configured in the SRS resource, the UE randomly determines the Tx beam in S930 and transmits the SRS via the determined Tx beam.

[0218] More specifically, for P - SRS with "SRS - ResourceConfigType" set to "periodic":

[0219] i) If SRS - SpatialRelationInfo is set to "SSB / PBCH", the UE transmits the corresponding SRS resource using the same spatial - domain transmission filter (or generated from the corresponding filter) as the spatial - domain Rx filter for receiving the SSB / PBCH; or

[0220] ii) If SRS - SpatialRelationInfo is set to "CSI - RS", the UE transmits the SRS resource using the same spatial - domain transmission filter for receiving the periodic CSI - RS or SP CSI - RS; or

[0221] iii) If SRS - SpatialRelationInfo is set to "SRS", the UE transmits the SRS resource using the same spatial - domain transmission filter for transmitting the periodic SRS.

[0222] Even if “SRS-ResourceConfigType” is set to “SP-SRS” or “AP-SRS”, beam determination and transmission operations can be applied similarly to the above.

[0223] - Additionally, in S940, the UE may or may not receive feedback on SRS in the following three cases.

[0224] i) If Spatial_Relation_Info is configured for all SRS resources within the SRS resource set, the UE transmits the SRS with the beam indicated by the base station. For example, if Spatial_Relation_Info indicates all the same SSB, CRI, or SRI, the UE repeatedly transmits the SRS with the same beam. This case corresponds to Figure 8 (a) of, and the purpose is for the base station to select the Rx beam.

[0225] ii) Spatial_Relation_Info may not be configured for all SRS resources within the SRS resource set. In this case, the UE can perform transmission while freely changing the SRS beam. That is, this case corresponds to Figure 8 (b) of, and the purpose is for the UE to scan the Tx beam.

[0226] iii) Spatial_Relation_Info may be configured for only some SRS resources within the SRS resource set. In this case, the UE can transmit the configured SRS resources with the indicated beam and transmit the SRS resources for which Spatial_Relation_Info is not configured by randomly applying the Tx beam.

[0227] Fig.10 is a flowchart showing an example of the uplink transmission / reception operation to which the method proposed in the present disclosure can be applied.

[0228] Referring to Fig.10 the eNB schedules uplink transmission (S1010) such as frequency / time resources, transport layer, uplink precoder, MCS, etc. Specifically, the eNB can determine the beam for PUSCH transmission for the UE through the above operations.

[0229] The UE receives DCI for downlink scheduling (i.e., scheduling information including PUSCH) on the PDCCH (S1020).

[0230] DCI format 0_0 or 0_1 can be used for uplink scheduling. Specifically, DCI format 0_1 includes the following information.

[0231] Identifier of DCI format, UL / Supplementary Uplink (SUL) indicator, Bandwidth Part indicator, frequency-domain resource assignment, time-domain resource assignment, hopping flag, Modulation and Coding Scheme (MCS), SRS Resource Indicator (SRI), precoding information and number of layers, antenna port, SRS request, DMRS sequence initialization, and uplink shared channel (UL-SCH) indicator.

[0232] Specifically, the SRS resources configured in the SRS resource set associated with the high-layer parameter "usage" can be indicated by the SRS resource indicator field. In addition, "spatialRelationInfo" can be configured for each SRS resource, and the value of "spatialRelationInfo" can be one of {CRI, SSB, and SRI}.

[0233] The UE sends uplink data on the PUSCH to the eNB (S1030).

[0234] When the UE detects a PDCCH including DCI format 0_0 or 0_1, the UE sends the corresponding PUSCH according to the indication of the corresponding DCI.

[0235] PUSCH transmission supports two transmission schemes (i.e., codebook-based transmission and non-codebook-based transmission):

[0236] i) When the high-layer parameter "txConfig" is set to "codebook", the UE is configured for codebook-based transmission. On the contrary, when the high-layer parameter "txConfig" is set to "nonCodebook", the UE is configured for non-codebook-based transmission. When the high-layer parameter "txConfig" is not configured, the UE does not predict that the PUSCH is scheduled by DCI format 0_1. When the PUSCH is scheduled by DCI format 0_0, the PUSCH transmission is based on a single antenna port.

[0237] In the case of codebook - based transmission, the PUSCH can be scheduled by DCI format 0_0, DCI format 0_1, or semi - statically. When the PUSCH is scheduled by DCI format 0_1, the UE determines the PUSCH transmission precoder based on the SRI, transmit precoding matrix indicator (TPMI), and transmission rank from the DCI as given by the SRS resource indicator, precoding information, and layer number fields. The TPMI is used to indicate the precoder to be applied on the antenna port, and when multiple SRS resources are configured, the TPMI corresponds to the SRS resource selected by the SRI. Alternatively, when a single SRS resource is configured, the TPMI is used to indicate the precoder to be applied on the antenna port and corresponds to the single SRS resource. The transmission precoder is selected from the uplink codebook having the same number of antenna ports as the higher - layer parameter "nrofSRS - Ports".

[0238] When the higher - layer parameter "txConfig" set to "codebook" is configured for the UE, at least one SRS resource is configured in the UE. The SRI indicated in slot n is associated with the most recent transmission of the SRS resource identified by the SRI, and here, the SRS resource is before the PDCCH (i.e., slot n) carrying the SRI.

[0239] ii) In the case of non - codebook - based transmission, the PUSCH can be scheduled by DCI format 0_0, DCI format 0_1, or semi - statically. When multiple SRS resources are configured, the UE can determine the PUSCH precoder and transmission rank based on the broadband SRI, and here, the SRI is given by the SRS resource indicator in the DCI or by the higher - layer parameter "srs - ResourceIndicator". The UE can use one or more SRS resources for SRS transmission, and here, multiple SRS resources can be configured for simultaneous transmission in the same RB based on UE capabilities. Only one SRS port is configured for each SRS resource. Only one SRS resource can be configured to the higher - layer parameter "usage" set to "nonCodebook". The maximum number of SRS resources that can be configured for non - codebook - based uplink transmission is 4. The SRI indicated in slot n is associated with the most recent transmission of the SRS resource identified by the SRI, and here, the SRS transmission is before the PDCCH (i.e., slot n) carrying the SRI.

[0240] Multi-panel operation

[0241] Hereinafter, matters related to the definition of the panel in the present disclosure will be described in detail.

[0242] The "panel" mentioned in the present disclosure can be based on at least one of the following definitions.

[0243] According to an embodiment, a "panel" can be interpreted / applied by transforming it into "one panel or multiple panels" or "panel group". A panel can be related to specific characteristics (e.g., timing advance (TA), power control parameter, etc.). Multiple panels can be panels that have similarity / common values in terms of specific characteristics.

[0244] According to an embodiment, a "panel" can be interpreted / applied by transforming it into "one antenna port or multiple antenna ports", "one uplink resource or multiple uplink resources", "antenna port group" or "uplink resource group (or set)". An antenna port or uplink resource can be related to specific characteristics (e.g., timing advance (TA), power control parameter, etc.). Multiple antenna ports (uplink resources) can be antenna ports (uplink resources) that have similarity / common values in terms of specific characteristics.

[0245] According to an embodiment, a "panel" can be interpreted / applied by transforming it into "one beam or multiple beams" or "at least one beam group (or set)". A beam (beam group) can be related to specific characteristics (e.g., timing advance (TA), power control parameter, etc.). Multiple beams (beam groups) can be beams (beam groups) that have similarity / common values in terms of specific characteristics.

[0246] According to an embodiment, a "panel" can be defined as a unit for UE to configure transmit / receive beams. For example, a "transmission panel (Tx panel)" can be defined as a unit that can generate multiple candidate transmission beams from one panel, but only one beam can be used for transmission at a specific time (i.e., only one transmission beam (spatial relation information RS) can be used per Tx panel to transmit a specific uplink signal / channel).

[0247] According to an embodiment, a "panel" can refer to "multiple antenna ports (or at least one antenna port)", "antenna port group" or "uplink resource group (or set)" that have common / similar uplink synchronization. Here, a "panel" can be interpreted / applied by transforming it into a general expression of "uplink synchronization unit (USU)". Alternatively, a "panel" can be interpreted / applied by transforming it into a general expression of "uplink transmission entity (UTE)".

[0248] In addition, an "uplink resource (or resource group)" can be interpreted / applied by transforming it into a resource (or resource group (set)) of physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) / sounding reference signal (SRS) / physical random access channel (PRACH). Conversely, the resources (resource groups) of PUSCH / PUCCH / SRS / PRACH can be interpreted / applied as an "uplink resource (or resource group)" based on the definition of a panel.

[0249] In the present disclosure, "antenna (or antenna port)" may represent a physical or logical antenna (or antenna port).

[0250] As described above, the "panel" mentioned in the present disclosure can be interpreted in various ways as "a set of UE antenna elements", "a set of UE antenna ports", "a set of logical antennas", etc. Which physical / logical antennas or antenna ports are mapped to a panel can vary differently according to the position / distance / correlation between antennas, RF configuration, and / or antenna (port) virtualization method. The panel process can vary according to the UE implementation method.

[0251] In addition, the "panel" mentioned in the present disclosure can be interpreted / applied by transforming it into "multiple panels" or "a group of panels" (having similarities in specific characteristics).

[0252] Multi-panel structure

[0253] Hereinafter, matters related to the implementation of multiple panels will be described.

[0254] When implementing a UE in a high frequency band, modeling of a UE having multiple panels composed of one or more antennas is being considered (for example, two-way two panels in 3GPP UE antenna modeling). Various forms can be considered when implementing such multiple panels. This is described in detail below with reference to Fig.11 and Fig.12 in detail.

[0255] Fig.11 and Fig.12 shows an example of a RF-switch-based multiple panel applied to the present disclosure.

[0256] Multiple panels can be implemented based on RF switches.

[0257] Referring to Fig.11 , only one panel can be enabled at a time, and signal transmission cannot be performed within a predetermined time when the enabled panel changes (i.e., panel switching).

[0258] Fig.12 shows multiple panels according to different implementation schemes. Each panel can have an RF chain connected thereto so that it can be enabled at any time. In this case, the time taken for panel switching can be zero or very short, and according to the modem and power amplifier configuration, multiple panels can be enabled simultaneously to transmit signals simultaneously (STxMP: Simultaneous Transmission across Multiple Panels).

[0259] In a UE having the above-mentioned multiple panels, the radio channel state can be different for each panel, and the RF / antenna configuration can be different for each panel. Therefore, a method for estimating the channel of each panel is required. Specifically, for 1) measuring the uplink quality or managing the uplink beam or 2) measuring the downlink quality of each panel or managing the downlink beam using channel reciprocity, the following procedures are required.

[0260] - A procedure for transmitting one or more SRS resources for each panel (here, the multiple SRS resources can be SRS resources transmitted on different beams within one panel or SRS resources repeatedly transmitted on the same beam).

[0261] For ease of description below, a set of SRS resources transmitted based on the same purpose and the same time-domain behavior within the same panel is referred to as an SRS resource group. The purpose can include at least one of beam management, antenna switching, codebook-based PUSCH, or non-codebook-based PUSCH. The time-domain behavior can be an operation based on any one of aperiodic, semi-persistent, and periodic.

[0262] The SRS resource group can use the configuration of the SRS resource set supported in the Rel-15 NR system as it is or separately from the SRS resource set. One or more SRS resources (based on the same purpose and time-domain behavior) can be configured as an SRS resource group. Regarding the same purpose and time-domain behavior, in the case of Rel-15, multiple SRS resource sets can be configured only when the corresponding purpose is beam management. It is defined that simultaneous transmission cannot be performed between SRS resources configured in the same SRS resource set, but simultaneous transmission can be performed between SRS resources belonging to different SRS resource sets.

[0263] When considering the panel implementation scenario and multi-panel simultaneous transmission as Fig.12 shown, the concepts described above in conjunction with the SRS resource set can be directly applied to the SRS resource group. When considering panel switching according to the panel implementation scenario based on Fig.11 the SRS resource group can be defined separately from the SRS resource set.

[0264] For example, a specific ID can be assigned to each SRS resource such that resources with the same ID belong to the same SRS resource group (SRS resource group) and resources with different IDs belong to different resource groups.

[0265] For example, when four SRS resource sets configured for beam management (BM) purposes (e.g., the RRC parameter usage is configured to "BeamManagement") are configured for a UE, each SRS resource set can be configured and / or defined to correspond to each panel of the UE. As an example, when the four SRS resource sets are represented by SRS resource sets A, B, C, and D, and the UE implements a total of four (transmission) panels, each SRS resource set corresponds to one (transmission) panel to perform SRS transmission.

[0266] As an example, the implementation of the UE shown in Table 7 can be possible.

[0267] [Table 7]

[0268]

[0269] Referring to the content of Table 7, when the UE reports (or sends) UE capability information indicating that the number of SRS resource sets that the UE itself can support is 7 or 8 to the BS, the corresponding UE can be configured by the BS with a maximum total of four SRS resource sets (for BM purposes). In this case, as an example, the UE can also be defined, configured, and / or instructed to perform uplink transmission by making each SRS resource set (for BM purposes) correspond to each panel (transmission panel and / or reception panel) of the UE. That is, the SRS resource set configured for a specific purpose (e.g., BM purpose) for the UE can be defined, configured, and / or instructed to correspond to the panel of the UE. As an example, when the BS (implicitly or explicitly) configures and / or instructs the UE with a first SRS resource set related to uplink transmission (configured for BM purposes), the corresponding UE can identify that the uplink transmission is performed using the panel related to (or corresponding to) the first SRS resource set.

[0270] In addition, similar to the UE, when a UE supporting four panels sends each panel to correspond to one SRS resource set for BM purposes, information about the number of SRS resources that can be configured per SRS resource set can also be included in the UE's capability information. Here, the number of SRS resources can correspond to the number of beams (e.g., uplink beams) that can be sent per panel of the UE. For example, a UE implementing four panels can be configured to perform uplink transmission such that two uplink beams correspond to two RS resources respectively configured for each panel.

[0271] MPUE category (Multi-panel UE category)

[0272] Regarding multi-panel transmission, UE category information may be defined to facilitate the UE reporting performance information related to its multi-panel transmission. As an example, three multi-panel UE (MPUE) categories may be defined, and the MPUE categories may be classified according to whether multiple panels can be enabled and / or whether transmission using multiple panels can be performed.

[0273] In the case of the first MPUE category (MPUE category 1), in a UE that implements multiple panels, only one panel can be enabled at a time, and the latency of panel switching and / or enabling can be set to [X] ms. For example, the latency can be set to be longer than the latency of beam switching / enabling, and can be set in units of symbols or time slots.

[0274] In the case of the second MPUE category (MPUE category 2), in a UE that implements multiple panels, multiple panels can be enabled at a time, and one or more panels can be used for transmission. That is, simultaneous transmission using panels can be performed in the second MPUE category.

[0275] In the case of the third MPUE category (MPUE category 3), in a UE that implements multiple panels, multiple panels can be enabled at a time, but only one panel can be used for transmission.

[0276] Regarding the multi-panel-based signal and / or channel transmission / reception proposed in the present disclosure, at least one of the above three MPUE categories can be supported. For example, in Rel-16, MPUE category 3 among the following three MPUE categories can be (optionally) supported.

[0277] In addition, information about the MPUE category can be predefined in the standard or semi-statically configured and / or dynamically indicated according to the situation in the system (i.e., the network side or the UE side). In this case, the MPUE category can be considered to perform configuration / indication related to multi-panel-based signal and / or channel transmission / reception.

[0278] Panel-Specific Send / Receive

[0279] Hereinafter, matters related to the configuration / indication related to panel-specific transmission / reception will be described.

[0280] Regarding multi-panel-based operations, the transmission and reception of signals and / or channels can be performed in a panel-specific manner. Here, "panel-specific" may mean that the transmission and reception of signals and / or channels can be performed on a per-panel basis. Panel-specific transmission / reception may also be referred to as panel-selective transmission / reception.

[0281] Regarding panel - specific transmission and reception in multi - panel - based operations proposed in the present disclosure, methods of using identification information (e.g., identifier (ID), indicator, etc.) to set and / or indicate the panel(s) among one or more panels to be used for transmission and reception may be considered.

[0282] As an example, the ID of a panel can be used for panel - selective transmission of PUSCH, PUCCH, SRS, and / or PRACH among multiple enabled panels. The ID can be set / defined based on at least one of the following four methods (Alt 1, 2, 3, and 4).

[0283] Alt.1: The ID of the panel can be the SRS resource set ID.

[0284] As an example, when considering the aspects according to a) to c) below, it may be desirable for each UE Tx panel to correspond to an SRS support set set according to the UE implementation.

[0285] a) SRS resources of multiple SRS resource sets with the same time - domain operation are transmitted simultaneously in the same bandwidth part (BWP).

[0286] b) Power control parameters are set in units of SRS resource sets.

[0287] c) The UE reports up to 4 SRS resource sets (which may correspond to at most 4 panels) according to the supported time - domain operation.

[0288] In the case of the Alt.1 method, the SRS resource sets related to each panel can be used for PUSCH transmission based on "codebook" and "non - codebook". Additionally, multiple SRS resources belonging to multiple SRS resource sets can be selected by extending the SRI field of the DCI. A mapping table between the sounding reference signal resource indicator (SRI) and the SRS resources may need to be extended to include the SRS resources in all SRS resource sets.

[0289] Alt.2: The ID of the panel can be an ID (directly) associated with a reference RS resource and / or a reference RS resource set.

[0290] Alt.3: The ID of the panel can be an ID directly associated with a target RS resource (reference RS resource) and / or a reference RS resource set.

[0291] In the case of the Alt.3 method, it may be easier to control the configured SRS resource set corresponding to a UE Tx panel, and the same panel identifier can be assigned to multiple SRS resource sets with different time - domain operations.

[0292] Alt.4: The ID of the panel can be an ID additionally set in the spatial relation information (e.g., RRC parameter (SpatialRelationInfo)).

[0293] The Alt.4 method can be a method of newly adding information for indicating the ID of the panel. In this case, it is easier to control the configured SRS resource set corresponding to a UE Tx panel, and the same panel identifier can be allocated to multiple SRS resource sets with different time domain operations.

[0294] As an example, a method of introducing UL TCI similar to the existing DL TCI (transmission configuration indication) can be considered. Specifically, the UL TCI state definition may include a list of reference RS resources (e.g., SRS, CSI-RS, and / or SSB). The current SRI field can be reused to select the UL TCI state from the configured set. Alternatively, to indicate the UL TCI state, a new DCI field (e.g., UL-TCI field) of DCI format 0_1 can be defined.

[0295] The information related to the above-mentioned panel-specific transmission and reception (e.g., panel ID, etc.) can be sent through high-layer signaling (e.g., RRC message, MAC-CE, etc.) and / or low-layer signaling (e.g., L1 signaling, DCI, etc.). The information can be sent from the base station to the UE or from the UE to the base station according to the situation or as needed.

[0296] In addition, the corresponding information can be set in a hierarchical manner, where a set for the candidate group is set and specific information is indicated.

[0297] In addition, the above-mentioned panel-related identification information can be set on a per single panel basis or on a basis of multiple panels (e.g., panel group or panel set).

[0298] The above descriptions (3GPP system, frame structure, NR system, etc.) can be combined with the methods proposed in this disclosure, which will be described later or supplemented to clarify the technical features of the methods proposed in this disclosure. The methods described below are only divided for description convenience, and some components of one method can be replaced by some components of another method, or can be combined with it for application.

[0299] In addition to the multi-panel transmission of transparent UEs between the UE and the base station after NR Rel-16, the following operations can be considered. Specifically, in the state where the UE and the base station identify the multi-panel of the UE with each other, the base station can configure / indicate / schedule panel-switching / selection-based transmission or simultaneous transmission across multiple panels (STxMP) to the UE, and the UE can execute it. Such UE operations can occur not only in the transmission of the UE's UL data (e.g., PUSCH), but also in the transmission of another UL channel of the UE (e.g., PUCCH, SRS, PRACH, etc.), and simultaneous transmission across multiple panels (STxMP) can be performed between different UL channels.

[0300] In this case, if the transmission panels pre-configured between the UL channels for configuring / indicating / scheduling STxMP-based transmission are different, the UE can transmit multiple UL channels based on STxMP through different panels according to the UE capability. If the transmission panels pre-configured between the UL channels are the same or different and overlapping, STxMP-based operations cannot be performed.

[0301] Based on the above background, the present disclosure describes a method for a subsequent UE to perform STxMP transmission for multiple UL channels according to the configuration between the base station and the UE when the base station configures / indicates / schedules simultaneous transmission of two or more UL channels (e.g., PUCCH, PUSCH, SRS, PRACH) to the UE.

[0302] In Rel-15 NR, spatialRelationInfo can be used to indicate the transmission beam to be utilized when the base station transmits a UL channel to the UE. When the base station transmits PUCCH and SRS by configuring a DL reference signal (e.g., SSB-RI, CRI (P / SP / AP)) or SRS (i.e., SRS resource) as the reference RS and / or target RS of the target UL channel via RRC configuration, the base station can indicate which UL transmission beam to utilize. In addition, when the base station schedules PUSCH for the UE, the transmission beam indicated by the base station and used for SRS transmission is indicated via the SRI field as the transmission beam for PUSCH and is used as the UE's PUSCH transmission beam.

[0303] Regarding the indication of the panel and / or beam of the UE in uplink transmission, the BS can configure / indicate panel-specific transmission for UL transmission through the following Alt.2 or Alt.3.

[0304] - Alt.2: Introduce the UL-TCI framework and support UL-TCI-based signaling similar to the DL beam indication supported in Rel-15.

[0305] A new panel ID may or may not be introduced.

[0306] Perform panel-specific signaling using the UL-TCI state.

[0307] - Alt.3: Introduce a new panel ID. The corresponding panel ID can be implicitly / explicitly applied to the transmission of the target RS resource / resource set, PUCCH resource, SRS resource, or PRACH resource.

[0308] The panel-specific signaling (e.g., enhanced by DL beam reporting) is implicitly performed or explicitly performed using the new panel ID.

[0309] When the signaling is explicitly performed, the panel ID can be configured in the target RS / channel or the reference RS (e.g., DL RS resource configuration or spatial relation information).

[0310] For the panel ID, a new MAC CE may not be specified.

[0311] Table 8 below shows the UL-TCI states based on Alt.2.

[0312] [Table 8]

[0313]

[0314] As shown in Table 8, an integrated framework for the base station to configure and / or indicate the transmission panel / beam for the UE's UL channel and / or UL RS can be considered. As an example, for the sake of illustration, the framework can be referred to as the UL-TCI framework. The UL-TCI framework can be a form in which the DL-TCI framework considered in the existing system (e.g., Rel-15 NR system) is extended to UL. If it is based on the UL-TCI framework, the base station can configure the DL RS (e.g., SSB-RI, CRI) and / or UL RS (e.g., SRS) for the UE via higher layer signaling (e.g., RRC configuration) as the reference RS or source RS to be used / applied for the transmission beam of the target UL channel (e.g., PUCCH, PUSCH, PRACH) and / or target UL RS (e.g., SRS). When transmitting the target UL channel and / or target UL RS, the corresponding UE can use the reference RS or source RS configured by the base station.

[0315] If the UL-TCI framework is applied, compared with the existing "SRI-based PUSCH scheduling and PUSCH beam indication" method where the SRS for the purpose of "CB" or "non-CB" must be sent before the SRI indication of the PUSCH transmission, there is an advantage of reducing the overhead and delay of the PUSCH transmission beam configuration and / or indication. There is also an advantage that the method based on the UL-TCI framework can be integrally applied to all UL channels / RS such as PUCCH / PUSCH / PRACH / SRS.

[0316] In NR Rel-16 and later, i) in addition to the multi-panel transmission of transparent UEs between the UE and the base station, ii) it is expected that a method will be introduced in which, in a state where the UE and the base station identify the respective multi-panel states of the UE, the base station configures / indicates / schedules panel switching UL transmission and / or multi-panel simultaneous UL transmission to the UE, and the UE executes it. This STxMP operation can obtain the robustness of PUSCH transmission by transmitting the same transport block via / using multiple panels during UL data transmission (i.e., single-frequency network (SFN) UL transmission), and can also obtain the effect of improving the data rate by transmitting different data to a single TRP or multiple TRPs. When the existing UL channel / RS with periodic characteristics conflicts with the UL channel / RS indicated dynamically (i.e., triggered / scheduled by DCI), there are also advantages in terms of resource utilization obtained by transmitting multiple UL channels / RS, without wasting resources or creating ambiguous situations by discarding UL channels / RS with low priority.

[0317] The above UE operations can be considered in the UL control channel transmission, UL RS transmission, and uplink data transmission (e.g., PUSCH) of the UE. Specifically, the present disclosure describes a method for performing STxMP transmission for multiple UL channels / RS of a subsequent UE according to the configuration between the base station and the UE when the base station configures / indicates / schedules the simultaneous transmission of two or more UL channels / RS (e.g., PUCCH, PUSCH, SRS, PRACH (e.g., PRACH in PDCCH command PRACH and / or contention-free RACH procedure)) to the UE.

[0318] The method for the base station to configure / indicate the transmission panel for the UL channel / RS to the UE can be divided into an explicit method or an implicit method.

[0319] First, in the UE transmission panel configuration / indication for identifying the transmission / reception panels of non-transparent UEs between the UE and the base station, the following explicit method can be considered.

[0320] In the same manner as the existing method performed with the high-layer parameter of spatialRelationInfo for the transmission beam configuration / indication via each UL channel / RS, the transmission panel configuration / indication of each UL channel / RS of the UE can also be performed via RRC configuration. In this case, the transmission panel configuration / indication of each UL channel / RS of the base station can be based on the following i) to iii).

[0321] i) The panel (e.g., panel ID) can be configured / indicated in the form of sub-parameters included in the RRC parameters (i.e., PUCCH-Resource, SRS-ResourceSet, or SRS-Resource) IE for each UL channel / RS configuration.

[0322] ii) The panel (e.g., panel ID) can be configured / indicated in the form of sub-parameters included in the RRC parameters (i.e., PUCCH-SpatialRelationInfo, SRS-SpatialRelationInfo, or UL-TCI state frame structure) IE for configuring the transmission beam of each UL channel / RS.

[0323] iii) When configuring / indicating the SRS resource (set) for UL channel / RS transmission to utilize the UE panel used during SRS transmission, the panel (e.g., panel ID) can be configured / indicated.

[0324] Next, in the UE transmit panel configuration / indication for identifying the transmit / receive panel of the UE, the following implicit methods can be considered. To utilize the UE panel used for receiving the downlink (DL) reference signal (RS) and / or DL channel during UL channel / RS transmission, the base station can configure / indicate the panel to the UE as follows.

[0325] The base station can configure / indicate the DL RS and / or DL channel in the form of sub-parameters included in i) the RRC parameters for each UL channel / RS configuration or ii) the RRC parameters for configuring the transmission beam of each UL channel / RS. By doing so, the base station can indicate the UL panel of the UE using the beam correspondence.

[0326] Based on the above background, Proposal 1 and Proposal 2 are described. The following proposals apply to UEs with STxMP capability (able to perform simultaneous transmission across multiple channels (STxMP)) that can simultaneously transmit multiple channels / RS across multiple panels (i.e., via / using multiple panels). Some proposals (e.g., Proposal 1-2 and 1-3) do not have the corresponding capability (i.e., STxMP capability) or apply to UEs that include only one transmit panel.

[0327] As described above, the UL channels described in this disclosure can be replaced by uplink reference signals (UL RS), and can also be replaced by UL channel / RS. In this disclosure, a transmit channel can mean transmitting information / data, etc. via the channel. In addition, in this disclosure, the priority between channels can mean the priority between channels / RS when the transmission timings of channels / RS overlap.

[0328] [Proposal 1]

[0329] In a UE including one or more UL panels, if multiple UL channels are configured / indicated / scheduled simultaneously and their transmission timings overlap in the time domain, the operation of the UE can be switched based on the relationship of the panel IDs configured for the respective conflicting UL channels (e.g., comparing the panel IDs configured for the respective UL channels and whether the panel IDs are the same). Specifically, if the panel IDs configured for the respective UL channels are different, the UE can operate according to Proposal 1-1 (Option 1) described later; otherwise, the UE can operate according to Proposal 1-2 (Options 2-1 and 2-2) described later. That is, after a conflict between UL channels, the UE operation in Options 1 and 2 described later can be switched by sending a comparison of the panel IDs.

[0330] Hereinafter, for convenience of description, it is assumed that the number of transmissions of multiple uplink channels configured for the UE is two (e.g., UL Channel 1 and UL Channel 2). However, the application of the embodiments according to the present disclosure is not limited thereto, and it can also be executed even if the transmissions of two or more UL channels are configured for the UE.

[0331] [Proposal 1-1]

[0332] If the panel IDs configured for the respective UL channels (UL Channel 1 and UL Channel 2) are different, the UE can operate as follows (Option 1).

[0333] If the transmission timings of UL Channel 1 and UL Channel 2 of the UE configured / indicated / scheduled by the base station overlap with each other, if the transmission panels respectively configured for UL Channel 1 and UL Channel 2 are different, the UE can perform simultaneous transmission of UL Channel 1 and UL Channel 2. Here, the overlap of the transmission timings can include that the resources transmitted via UL Channel 1 and the resources transmitted via UL Channel 2 completely overlap or partially overlap at the time slot / symbol level.

[0334] For example, if the panel ID configured for UL Channel 1 and the panel ID configured for UL Channel 2 are different, the UE can perform simultaneous transmission of UL Channel 1 and UL Channel 2.

[0335] According to the existing method (in the case of non-carrier aggregation (CA)), if a conflict of the UL channels of the UE occurs in a single-cell environment, the non-preferred UL channel is discarded according to the priority rule.

[0336] On the other hand, according to this embodiment, a UE supporting (having) STxMP capability is allowed to perform simultaneous transmission across different panels, so the advantage is that waste of resources (related to the transmission of DCI for uplink channel transmission indication / scheduling) can be reduced, and the efficiency of uplink transmission can be increased.

[0337] [Proposal 1-2-1]

[0338] If the panel IDs configured for each UL channel (UL Channel 1 and UL Channel 2) are the same, the UE can operate as follows (Option 2-1).

[0339] If the transmission timings of UL Channel 1 and UL Channel 2 of the UE configured / indicated / scheduled by the base station overlap with each other, if the transmission panels respectively configured for UL Channel 1 and UL Channel 2 are the same, the UE can operate according to i) or ii) below. Here, the overlap of the transmission timings may include that the resources for transmitting UL Channel 1 and the resources for transmitting UL Channel 2 completely overlap or partially overlap at the time slot / symbol level.

[0340] i) If UL Channel 1 and UL Channel 2 are different types of channels (e.g., PUCCH and PUSCH), the UE can transmit the channel with higher priority (e.g., UL Channel 1) and can shift / delay and transmit the other channel (e.g., UL Channel 2) considering the priority between the channels. The priority rules between different UL channels can be the same as the priority rules between different UL channels in the existing methods (e.g., LTE and / or NR standards). Here, shifting / delaying and transmitting the UL channel may mean transmitting the UL channel in the resources that are shifted / delayed by a preconfigured unit (e.g., time slot or symbol) in the resources configured for the transmission of the corresponding UL channel.

[0341] ii) If UL Channel 1 and UL Channel 2 are the same type of channels (e.g., PUSCH), the UE can transmit the channel with higher priority and can shift / delay and transmit the other channel according to the predefined / preconfigured priority rules.

[0342] Examples of the predefined / preconfigured priority rules are as follows.

[0343] 1) The UL channel scheduled via the lowest CORESET (i.e., the CORESET configured with the lowest CORESET ID) may have a higher priority than other UL channels.

[0344] 2) The UL channel scheduled by the DCI scrambled with a specific radio network temporary identifier (RNTI) may have a higher priority than other UL channels.

[0345] 3) The priority between multiple UL channels can be determined according to the periodicity of the UL channel / RS (e.g., the priority can be determined in the order of aperiodic > semi-persistent > periodic).

[0346] 4) The UL channel carrying important data such as uplink control information (UCI) (e.g., HARQ-ACK information (A / N feedback), scheduling request, CSI report, etc.) may have a higher priority than other UL channels.

[0347] 5) The UL channel scheduled by the DCI in the front in the time domain (e.g., in front at the time slot / symbol level) may have a priority superior to other UL channels.

[0348] Only one, two or more of the examples 1) to 5) where the priority rules are not applied can be combined and applied.

[0349] As an example of applying the priority rules, if the transmission timings of UL channel 1 and UL channel 2 overlap, the UE may transmit the UL channel with a high priority (e.g., UL channel 2) according to the first configuration / indication / scheduling, and may transmit the UL channel with a low priority (e.g., UL channel 1) in the preconfigured time domain resources. In this case, the preconfigured time domain resources may be resources that shift / delay the resources of the first configuration / indication / scheduling.

[0350] For example, the preconfigured transmission timing (i.e., the preconfigured time domain resources) may be configured to be separated from the initial transmission timing (e.g., the first time slot / symbol or the last time slot / symbol of the transmission resource domain configured for the UL channel with a low priority) at the time slot level (e.g., n time slots) or the symbol level (e.g., k symbols). If the UE transmits the shifted / delayed UL channel in a state where the base station and the UE recognize the corresponding information, the base station may expect the corresponding UL channel to be transmitted at the corresponding timing.

[0351] For each RRC configuration of each UL channel / RS, there may be a configuration at the shifted / delayed time slot level (e.g., n time slots) or symbol level (e.g., k symbols), or it may be configured as one value according to the integration rule. For example, since the base station and the UE recognize the number of consecutive symbols of the UL channel with a high priority and transmitted at the original timing, the UE may consider the number of symbols that accurately overlap between the UL channels and transmit the UL channel with a low priority from the symbol immediately after the end of the transmission of the UL channel transmitted at the original timing.

[0352] If the timing of the shifted / delayed UL channel conflicts with another UL channel or UL resource, the UE may abandon the transmission of the shifted / delayed UL channel and discard it. And / or, the operation may be defined / configured / indicated by the base station.

[0353] [Proposal 1-2-2]

[0354] If the panel IDs configured for each UL channel (UL channel 1 and UL channel 2) are the same, the UE may operate as follows (Option 2-2).

[0355] If the transmission timings of UL channel 1 and UL channel 2 of a UE configured / indicated / scheduled by a base station overlap with each other, then if the transmission panels configured for UL channel 1 and UL channel 2 respectively are the same, the UE can operate according to the following i) or ii). Here, the overlap of the transmission timings may include that the resources for transmitting UL channel 1 and the resources for transmitting UL channel 2 completely overlap or partially overlap at the time slot / symbol level.

[0356] i) If UL channel 1 and UL channel 2 are different types of channels (e.g., PUCCH and PUSCH), then the UE can perform a piggyback operation considering the priority between the UL channels. Specifically, the UE can simultaneously transmit UL channel 1 and UL channel 2 in the form of piggybacking the information / data of the UL channel with a lower priority using the time domain / frequency domain resources (e.g., RE) of the UL channel with a higher priority. Here, the priority rules between different UL channels can be the same as the priority rules between different UL channels in existing methods (e.g., LTE and / or NR standards).

[0357] ii) If UL channel 1 and UL channel 2 are the same type of channels (e.g., PUSCH), then the UE can simultaneously transmit UL channel 1 and UL channel 2 in the form of piggybacking the information / data of the UL channel with a lower priority using the time domain / frequency domain resources (e.g., RE) of the channel with a higher priority according to predefined / preconfigured priority rules.

[0358] Examples of the predefined / preconfigured priority rules are as follows.

[0359] 1) The UL channel scheduled via the lowest CORESET (i.e., the CORESET with the lowest CORESET ID) may have a higher priority than other UL channels.

[0360] 2) The UL channel scheduled by DCI scrambled with a specific radio network temporary identifier (RNTI) may have a higher priority than other UL channels.

[0361] 3) The priority between multiple UL channels can be determined according to the periodicity of the UL channel / RS (e.g., the priority can be determined in the order of aperiodic > semi-persistent > periodic).

[0362] 4) The UL channel carrying important data such as uplink control information (UCI) (e.g., HARQ-ACK information (A / N feedback), scheduling request, CSI report, etc.) may have a higher priority than other UL channels.

[0363] 5) The UL channel scheduled by DCI in the front in the time domain (e.g., in front at the time slot / symbol level) may have a higher priority than other UL channels.

[0364] Only one of Examples 1) to 5) where priority rules are not applied, and two or more examples can be combined and applied.

[0365] If the transmission timings of UL channel 1 and UL channel 2 of a UE configured / indicated / scheduled by a base station overlap and the transmission panels also overlap, the base station can configure / indicate via RRC and / or MAC CE which one of Proposals 1-2-1 and 1-2-2 the UE should adopt. If UL channel 1 and UL channel 2 are UL channels transmitted at different transmission and reception points (TRPs), the base station can configure this operation so that the UE operates according to Proposal 1-2-2 according to the deployment of the corresponding network (e.g., in the case of ideal backhaul). Thus, the effect is to share information between different TRPs while reducing latency.

[0366] According to an embodiment, UL channel 1 and UL channel 2 can be Ack / Nack (A / N) PUCCH1 and A / N PUCCH 2 transmitted at different TRPs. In this case, the operation of the UE according to the above embodiment is described below.

[0367] If the transmission timings of A / N PUCCH 1 and A / N PUCCH 2 overlap and the transmission panels are different for each PUCCH resource, the UE (supporting STxMP) can transmit two A / N PUCCHs simultaneously (i.e., perform STxMP) (Proposal 1-1).

[0368] If the transmission timings of A / N PUCCH 1 and A / N PUCCH 2 overlap and the transmission panels are the same for each PUCCH resource, the UE can perform the operations of Proposal 1-2-1 and / or Proposal 1-2-2 by comparing the priorities of the two PUCCHs (A / N PUCCH 1 and A / N PUCCH 2) (e.g., based on at least one of the priority rules according to 1) to 5) above).

[0369] According to another embodiment, it can be assumed that UL channel 1 and UL channel 2 are directed to one or / and two or more TRPs. In this case, the operation of the UE according to the above embodiment is described below.

[0370] If the transmission timings of different uplink channels (e.g., PUSCH and PUCCH, PUCCH and SRS, PUSCH and SRS) overlap and the transmission panels are different for each uplink channel, the UE (supporting STxMP) can transmit the uplink channels simultaneously (i.e., STxMP) (Proposal 1-1).

[0371] If the transmission panels are different for respective uplink channels, the UE may operate as follows. 1) If piggybacking is possible as in the case of a conflict between PUSCH and PUCCH, the UE may perform the operation of Proposal 1-2-2. 2) If piggybacking is not possible as in the case of a conflict between PUCCH and SRS, between PUSCH and SRS, between PUCCH and PRACH, and between PUSCH and PRACH, the UE may perform the operation of Proposal 1-2-1.

[0372] According to another embodiment, it may be assumed that when UL channel 1 and UL channel 2 are directed to one or / and two or more TRPs, a conflict occurs between the same UL channels (e.g., PUSCH 1 / 2, PUCCH 1 / 2, SRS1 / 2). If the transmission panels are different for respective uplink channels, the UE (supporting STxMP) may simultaneously transmit the uplink channels (i.e., STxMP) (Proposal 1-1). If the transmission panels are different for respective uplink channels, the UE may perform the operation of Proposal 1-2-1 and / or Proposal 1-2-2.

[0373] In this case, even if the number of uplink channels simultaneously transmitted (i.e., STxMP-based transmission) is 3 or more, it is obvious that Proposal 1 can be extended and applied. For example, in the case of Proposal 1-2-1, the UE may sequentially transmit a plurality of uplink channels in the form of enumerating the uplink channels in the order of the priority of the uplink channels and shifting / delaying the uplink channels in sequence. In addition, in the case of Proposal 1-2-2, the UE may transmit information / data of a plurality of uplink channels in the form of piggybacking all remaining uplink channels onto the uplink channel with the highest priority.

[0374] [Proposal 2]

[0375] Hereinafter, a detailed embodiment of a method for the UE to simultaneously transmit a plurality of uplink channels via different panels as in Proposal 1-1 will be described.

[0376] [Proposal 2-1]

[0377] If the UE transmits UL channel 1 and UL channel 2 via pre-configured different transmission panels, the base station may configure such that the UE operates according to Option 1 or Option 2 below.

[0378] Option 1) The UE may use resources in the same time domain / frequency domain to transmit UL channel 1 and UL channel 2 (i.e., STxMP-based transmission).

[0379] Option 2) The UE may perform simultaneous transmission (STxMP) across multiple panels using only resources in the same time domain in a frequency division multiplexing (FDM) scheme.

[0380] The base station can configure / indicate to the UE which one of Option 1 and Option 2 to adopt via RRC and / or MAC CE. Here, the same time domain can mean that the resource domains (i.e., time domain resources) for transmitting respective uplink channels completely overlap or partially overlap at the time slot / symbol level.

[0381] When the base station performs configuration according to Option 1 or Option 2, the following effects can be considered.

[0382] If each UE wants to obtain the effect of preventing resource waste by transmitting multiple uplink channels using the same resources according to the implementation of the network, the base station can be configured to make the UE operate according to Option 1.

[0383] If the UE wants to obtain the effect of frequency diversity through frequency division multiplexing (FDM) of multiple uplink channels, the base station can be configured to make the UE operate according to Option 2.

[0384] For example, if the base station configures Option 1 for the UE, the UE can operate as follows. If the frequency resource domains of UL Channel 1 and UL Channel 2 (initially configured / indicated / scheduled by the base station) are different, the UE can compare the priorities of the two UL channels (e.g., the priority rules applied in the case of different types of channels and / or as proposed in Proposal 1 in the case of the same type of channels), and use the initial frequency domain resources of the UL channel with the higher priority to simultaneously transmit UL Channel 1 and UL Channel 2 (i.e., transmission based on STxMP).

[0385] Alternatively, the operations of Option 1 and Option 2 can be switched according to whether the frequency domain resources initially configured / indicated / scheduled by the base station for UL Channel 1 and UL Channel 2 overlap (including both complete overlap and partial overlap). For example, if the initially configured / indicated / scheduled frequency domain resources of UL Channel 1 and UL Channel 2 partially overlap, the UE can operate according to Option 1, and if they do not overlap, the UE can operate according to Option 2.

[0386] Finally, Proposal 2-1 proposes a design such that the transmissions of UL Channel 1 and UL Channel 2 are performed in the form of at least one of the above options. This is configured such that the transmissions of UL Channel 1 and UL Channel 2 are not based on infinite / independent scheduling, thus improving the ease of system design / implementation.

[0387] In this case, even if the number of simultaneously transmitted (transmission based on STxMP) uplink channels is 3 or more, obviously, Proposal 2-1 can be extended and applied.

[0388] [Proposal 2-2]

[0389] If the UE performs simultaneous transmission across multiple panels (STxMP) in the form of frequency-division multiplexing of UL channel 1 and UL channel 2 as in Option 2 of Proposal 2-1, the base station can be configured such that the UE operates according to either i) or ii) below.

[0390] i) Based on FDM of only two uplink channels, the UE can perform STxMP.

[0391] ii) The base station can configure frequency hopping to the two uplink channels. The UE can perform STxMP based on FDM in the form of the corresponding frequency-hopping bandwidth across the two UL channels.

[0392] The base station can configure / indicate via RRC and / or MAC CE such that the UE operates according to one of i) or ii). The operations according to i) and ii) are described below with reference to Fig.13 Describe the operations according to i) and ii).

[0393] Fig.13 Shows an example of performing simultaneous transmission across multiple panels (STxMP) according to the method described in the present disclosure.

[0394] In Fig.13 the horizontal axis represents the time domain (e.g., symbol domain), and the vertical axis represents the frequency domain (e.g., RB domain).

[0395] More specifically, Fig.13 (a) of shows the FDM of the uplink channels (UL channel 1 and 2) without frequency hopping and simultaneous transmission (i.e., STxMP). Fig.13 (b) of shows the FDM of the uplink channels (UL channel 1 and 2) with frequency hopping and simultaneous transmission (i.e., STxMP).

[0396] Since two uplink channels are simultaneously transmitted across multiple panels (STxMP) based on frequency hopping according to ii), a diversity effect in the frequency domain can be expected.

[0397] The base station can configure / indicate retransmission (e.g., repetition) to the UE in i) STxMP without frequency hopping and ii) STxMP frequency hopping. Specifically, in the case of ii) STxMP frequency hopping, the base station can configure / indicate to the UE the form of performing repetition in each frequency-hopping band, as shown in Fig.14 (b) of.

[0398] Fig.14 Shows another example of performing simultaneous transmission across multiple panels (STxMP) according to the method described in the present disclosure.

[0399] Fig.14 Shows an example of retransmission in STxMP frequency-hopping transmission. In Fig.14In this case, the horizontal axis represents the time domain (e.g., symbol domain), and the vertical axis represents the frequency domain (e.g., RB domain).

[0400] More specifically, Fig.14 (a) of shows that the uplink channels (UL channels 1 and 2) are repeated by frequency hopping (repetition = 2) and transmitted simultaneously (i.e., STxMP). Fig.14 (b) of shows that in Fig.14 the example of (a) of, the frequency hopping bands are repeated (repetition = 2).

[0401] When the UL channel is used for PUCCH transmission of UCI with relatively high importance (e.g., A / N PUCCH (or CSI report)), the UE operations in Proposal 2-2 can be particularly advantageous in terms of pursuing robustness through frequency hopping and repetition. Specifically, when the frequency hopping boundaries are the same (finite) in the time domain, the UE operations in Proposal 2-2 can be performed between long PUCCHs (i.e., PUCCH formats 1, 3, 4) with configurable frequency hopping.

[0402] In terms of implementation, the base station / UE operations according to the above embodiments (e.g., operations related to the transmission of the uplink channel based on at least one of Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 / Proposal 2-1 / Proposal 2-2, etc.) can be processed by the Figures 18 to 22 devices described later (e.g., Fig.19 processors 102 and 202).

[0403] In addition, the base station / UE operations according to the above embodiments (e.g., operations related to the transmission of the uplink channel based on at least one of Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 / Proposal 2-1 / Proposal 2-2, etc.) can be stored in the memory (e.g., Fig.19 104 and 204) in the form of commands / programs (e.g., instructions, executable code) for running at least one processor (e.g., Fig.19 102 and 202).

[0404] Fig.15 Shows an example of the signaling between the UE and the base station to which the method described in the present disclosure is applicable. More specifically, Fig.15 Shows an example of the signaling between a base station (BS) and a user equipment (UE) that performs simultaneous transmission (e.g., STxMP transmission) via / using one or more panels to which the method described in the present disclosure (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.) is applicable. In the present disclosure, the UE and the BS are only examples and can be replaced by various devices described below with reference to Figures 18 to 22 description. Fig.15For ease of description only, it does not limit the scope of the present disclosure. Referring to Fig.15 , the UE is assumed to support one or more panels and may support simultaneous transmission of UL channels / RS using these one or more panels (i.e., simultaneous transmission across multiple panels). In addition, some of the steps shown may be omitted according to permutation and / or setting, etc. Fig.15 as shown.

[0405] - UE operation

[0406] In S1510, the UE may send UE capability information to the base station (BS). The UE capability information may include UE capability information related to (multi-) panels. For example, the UE capability information may include the number of panels (groups) that the UE can support, information on whether simultaneous transmission across multiple panels can be performed, information on the MPUE category (e.g., see MPUE category), etc. For example, the UE may send UE capability information to the BS, that is, information on STxMP capability related to the proposed method (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.).

[0407] For example, the UE ( Figures 18 to 22 100 / 200) sending UE capability information to the BS ( Figures 18 to 22 100 / 200) in step S1510 can be implemented by the device to be described below. For example, referring to Figures 18 to 22 , one or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to send UE capability information, and one or more transceivers 106 may send UE capability information to the BS. Fig.19

[0408] In S1520, the UE may receive RRC configuration information related to STxMP transmission from the BS. The RRC configuration information may include configuration information related to simultaneous transmission across multiple panels (i.e., STxMP), UL transmission related configuration information, etc. The RRC configuration information may consist of one or more configurations and may be sent via UE-specific RRC signaling.

[0409] ​For example, the RRC configuration information may include the RRC configuration described in the proposed methods (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.). As an example, as described in Proposal 1 / Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2, the RRC configuration information may include configuration information related to priority / configuration information related to the shift and / or delay to be applied to UL transmissions of lower priority / configuration information related to the piggybacking to be applied to UL transmissions of lower priority, etc. As an example, as described in Proposal 2 / Proposal 2-1 / Proposal 2-2, the RRC configuration information may include information for configuring / indicating one of STxMP transmissions based on resources in the same time domain / frequency domain or FDM type of STxMP based on resources in the same time domain / information for configuring / indicating one of FDM STxMP transmissions without frequency hopping or STxMP transmissions based on frequency hopping, etc.

[0410] For example, the operation of the UE ( Figures 18 to 22 100 / 200) receiving the RRC configuration information from the BS ( Figures 18 to 22 100 / 200) in step S1520 can be implemented by the Figures 18 to 22 device to be described below. For example, referring to Fig.19 , one or more processors 102 can control one or more transceivers 106 and / or one or more memories 104 to receive the RRC configuration information, and one or more transceivers 106 can receive the RRC configuration information from the BS.

[0411] In S1530, the UE can receive information related to the scheduling of UL transmissions from the BS. Herein, the UL transmissions may include the transmission of PUSCH (e.g., UL data) / PUCCH (e.g., CSI, etc.) / PRACH (e.g., PRACH for PDCCH command / PRACH in the contention-free RACH procedure, etc.) / SRS (e.g., periodic / semi-persistent / aperiodic SRS). In this case, the information related to the scheduling can be sent via DCI / MAC-CE, etc. The time-domain behavior of the UL transmissions can correspond to at least one of periodic / semi-persistent / aperiodic. For example, the information related to the scheduling of UL transmissions can be information related to the scheduling of UL channel / RS transmissions in the proposed methods (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.).

[0412] For example, in the case of non-periodic SRS transmission / non-periodic CSI transmission / PDCCH command PRACH transmission, etc., the UE can receive DCI (e.g., UL DCI) related to the scheduling of the corresponding transmission from the BS. For example, in the case of PUCCH transmission / non-periodic SRS transmission / non-periodic CSI transmission, etc., the UE can receive DCI (e.g., DL DCI) related to the scheduling of the corresponding transmission from the BS and the PDSCH scheduled / indicated by the corresponding DCI. For example, in the case of PUSCH transmission / non-periodic SRS transmission, etc., the UE can receive DCI (e.g., UL DCI) related to the scheduling of the corresponding transmission from the BS. For example, in the case of semi-persistent SRS transmission, etc., the UE can receive DCI and / or MAC-CE related to the scheduling of the corresponding transmission from the BS.

[0413] For example, the operation of the UE ( Figures 18 to 22 100 / 200) receiving information related to the scheduling of UL transmission from the BS ( Figures 18 to 22 100 / 200) in step S1530 can be implemented by the Figures 18 to 22 device to be described below. For example, referring to Fig.19 , one or more processors 102 can control one or more transceivers 106 and / or one or more memories 104 to receive information related to the scheduling of UL transmission, and one or more transceivers 106 can receive information related to the scheduling of UL transmission from the BS.

[0414] As assumed in the proposed method (e.g., proposal 1-1 / proposal 1-2-1 / proposal 1-2-2 of proposal 1 / proposal 2-1 / proposal 2-2 of proposal 2, etc.), based on the information in step S1530, the transmission timings between UL transmissions (i.e., UL channels / RSs) can overlap (fully / partially at the time slot / symbol level) / conflict. That is, the transmission timings of PUSCH transmission / PUCCH transmission / SRS transmission / PRACH transmission can overlap. In this case, the UE can perform UL transmission to the BS based on the proposed method (e.g., proposal 1-1 / proposal 1-2-1 / proposal 1-2-2 of proposal 1 / proposal 2-1 / proposal 2-2 of proposal 2, etc.).

[0415] For example, if multiple UL channels / RSs are configured / indicated / scheduled simultaneously and their transmission timings overlap / collide in the time domain, the UE may send multiple UL channels / RSs to the BS simultaneously based on the method of Proposal 1 and / or the method of Proposal 2. For example, as described in Proposal 1-1, the UE may send the UL channels / RSs to the BS via / using the respective panels configured for the respective UL channels / RSs. For example, as described in Proposal 1-2-1, based on the priority rules of multiple UL channels / RSs, the UE may send the UL channel / RS with a high priority to the BS, and may shift / delay it and send the UL channel / RS with a low priority to the BS. For example, as described in Proposal 1-2-2, based on the priority rules of multiple UL channels / RSs, the UE may send multiple UL channels / RSs to the BS simultaneously in the form of carrying the information / data of the UL channel with a low priority using the time-domain / frequency-domain resources (e.g., RE) of the UL channel with a high priority. For example, as described in Proposal 2-1, the UE may send multiple UL channels / RSs to the BS by i) the STxMP method using the resources in the same time domain / frequency domain and / or ii) the STxMP method in the FDM form using the resources in the same time domain. For example, as described in Proposal 2-2, the UE may send multiple UL channels / RSs to the BS by i) the FDM STxMP method without frequency hopping and / or ii) the STxMP method using frequency hopping.

[0416] For example, the operation for the UE ( Figures 18 to 22 100 / 200) to perform UL transmission (i.e., send UL channels / RSs) to the BS ( Figures 18 to 22 100 / 200) in step S1540 may be implemented by the Figures 18 to 22 device to be described below. For example, referring to Fig.19 , one or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to perform UL transmission (i.e., send UL channels / RSs), and one or more transceivers 106 may perform UL transmission to the BS (i.e., send UL channels / RSs to the BS).

[0417] - BS operation

[0418] In S1510, the base station (BS) may receive UE capability information from the UE. The UE capability information may include UE capability information related to (multiple) panels. For example, the UE capability information may include the number of panels (groups) that the UE can support, information on whether simultaneous transmission across multiple panels can be performed, information on the MPUE category (e.g., see MPUE category), etc. For example, the BS may receive UE capability information from the UE, that is, information on the STxMP capability related to the proposed method (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.).

[0419] For example, the operation of the BS ( Figures 18 to 22 100 / 200) receiving UE capability information from the UE ( Figures 18 to 22 100 / 200) in step S1510 may be implemented by the Figures 18 to 22 device to be described below. For example, referring to Fig.19 , one or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to receive UE capability information, and one or more transceivers 106 may receive UE capability information from the UE.

[0420] In S1520, the BS may send RRC configuration information related to STxMP transmission to the UE. The RRC configuration information may include configuration information related to simultaneous transmission across multiple panels (i.e., STxMP), UL transmission related configuration information, etc. The RRC configuration information may consist of one or more configurations and may be sent via UE-specific RRC signaling.

[0421] For example, the RRC configuration information may include the RRC configuration described in the proposed method (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.). As an example, as described in Proposal 1 / Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2, the RRC configuration information may include configuration information related to priority / shift and / or delay related to UL transmission to be applied to lower priority / carrying related to UL transmission to be applied to lower priority, etc. As an example, as described in Proposal 2 / Proposal 2-1 / Proposal 2-2, the RRC configuration information may include information configuring / indicating one of STxMP transmissions based on resources in the same time domain / frequency domain or FDM type of STxMP based on resources in the same time domain / information configuring / indicating one of FDM STxMP transmissions without frequency hopping or STxMP transmissions based on frequency hopping, etc.

[0422] For example, the BS ( Figures 18 to 22 100 / 200) in step S1520 sending to the UE ( Figures 18 to 22 The operation of sending RRC configuration information (for 100 / 200) can be implemented by the device described below. Figures 18 to 22 For example, referring to Fig.19 , one or more processors 102 can control one or more transceivers 106 and / or one or more memories 104 to send RRC configuration information, and one or more transceivers 106 can send RRC configuration information to the UE.

[0423] In S1530, the BS can send information related to the scheduling of UL transmission to the UE. Herein, UL transmission can include the transmission of PUSCH (e.g., UL data) / PUCCH (e.g., CSI, etc.) / PRACH (e.g., PDCCH command PRACH, PRACH in a contention-free RACH procedure, etc.) / SRS (e.g., periodic / semi-persistent / aperiodic SRS). In this case, the information related to scheduling can be sent via DCI / MAC-CE, etc. The time-domain behavior of UL transmission can correspond to at least one of periodic / semi-persistent / aperiodic. For example, the information related to the scheduling of UL transmission can be the information related to the scheduling of UL channel / RS transmission in the proposed method (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.).

[0424] For example, in the case of aperiodic SRS transmission / aperiodic CSI transmission / PDCCH command PRACH transmission, etc., the BS can send DCI (e.g., UL DCI) related to the scheduling of the corresponding transmission to the UE. For example, in the case of PUCCH transmission / aperiodic SRS transmission / aperiodic CSI transmission, etc., the BS can send DCI (e.g., DL DCI) related to the scheduling of the corresponding transmission and the PDSCH scheduled / indicated by the corresponding DCI to the UE. For example, in the case of PUSCH transmission / aperiodic SRS transmission, etc., the BS can send DCI (e.g., UL DCI) related to the scheduling of the corresponding transmission to the UE. For example, in the case of semi-persistent SRS transmission, etc., the BS can send DCI and / or MAC-CE related to the scheduling of the corresponding transmission to the UE.

[0425] For example, the BS ( Figures 18 to 22 for 100 / 200) sending the information related to the scheduling of UL transmission to the UE ( Figures 18 to 22 for 100 / 200) in step S1530 can be implemented by the device described below. Figures 18 to 22 For example, referring to Fig.19, one or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to send information related to the scheduling of UL transmissions, and one or more transceivers 106 may send information related to the scheduling of UL transmissions to the UE.

[0426] As assumed in the proposed method (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.), based on the information in step S1530, the transmission timings between UL transmissions (i.e., UL channels / RSs) may (fully / partially) overlap / collide at the time slot / symbol level. That is, the transmission timings of PUSCH transmissions / PUCCH transmissions / SRS transmissions / PRACH transmissions may overlap. In this case, the BS may receive UL channels / RSs sent from the UE based on the proposed method (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2, etc.).

[0427] For example, if multiple UL channels / RSs are configured / indicated / scheduled simultaneously and their transmission timings overlap / collide in the time domain, the BS may receive multiple UL channels / RSs sent from the UE based on the method of Proposal 1 and / or the method of Proposal 2 simultaneously. For example, as described in Proposal 1-1, the BS may receive UL channels / RSs from the UE via / using respective panels configured for each UL channel / RS. For example, as described in Proposal 1-2-1, based on the priority rules of multiple UL channels / RSs, the BS may receive the UL channel / RS with high priority from the UE, and may shift / delay it and receive the UL channel / RS with low priority from the UE. For example, as described in Proposal 1-2-2, based on the priority rules of multiple UL channels / RSs, the BS may receive multiple UL channels / RSs from the UE simultaneously in a form of carrying information / data of the UL channel with low priority using time domain / frequency domain resources (e.g., REs) of the UL channel with high priority. For example, as described in Proposal 2-1, the BS may receive multiple UL channels / RSs from the UE by i) the STxMP method using resources in the same time domain / frequency domain and / or ii) the STxMP method in the form of FDM using resources in the same time domain. For example, as described in Proposal 2-2, the BS may receive multiple UL channels / RSs from the UE by i) the FDM STxMP method without frequency hopping and / or ii) the STxMP method using frequency hopping.

[0428] For example, the operation of the BS ( Figures 18 to 22 100 / 200) receiving UL channels / RSs from the UE ( Figures 18 to 22 100 / 200) in step S1540 may be implemented by the Figures 18 to 22 device to be described below. For example, referring to Fig.19 One or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to receive UL channels / RSs, and one or more transceivers 106 may receive UL channels / RSs from a UE.

[0429] As described above, the above BS / UE signaling and operations (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2 / Fig.15 etc.) may be implemented by the apparatuses to be described below (e.g., Figures 18 to 22 ). For example, a UE may correspond to a first wireless device, and a BS may correspond to a second wireless device. In some cases, the reverse may also be considered.

[0430] For example, the above BS / UE signaling and operations (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2 / Fig.15 etc.) may be processed by Fig.19 one or more processors (e.g., 102 and 202). The above BS / UE signaling and operations (e.g., Proposal 1-1 / Proposal 1-2-1 / Proposal 1-2-2 of Proposal 1 / Proposal 2-1 / Proposal 2-2 of Proposal 2 / Fig.15 etc.) may be stored in a memory (e.g., Figures 18 to 22 one or more memories 104 and 204) in the form of commands / programs (e.g., instructions, executable code) for running at least one processor (e.g., 102 and 202). Fig.19

[0431] The above embodiments will be described in detail below from the perspective of UE operations. The methods to be described below are only distinguished for convenience of description. Therefore, it is obvious that part of the configuration of any method may be replaced by part of the configuration of another method, or the methods may be combined and applied. Fig.16

[0432] Fig.16 is a flowchart illustrating a method for a UE to transmit an uplink channel in a wireless communication system according to an embodiment of the present disclosure.

[0433] Referring to Fig.16 , a method for a UE to transmit an uplink channel in a wireless communication system according to an embodiment of the present disclosure may include: a step S1610 of transmitting capability information related to a panel, a step S1620 of receiving configuration information related to the transmission of an uplink channel, and a step S1630 of transmitting an uplink channel.

[0434] In S1610, the UE sends capability information related to the panel for the transmission of the uplink channel to the base station.

[0435] According to an embodiment, the capability information may be related to whether simultaneous transmission across multiple panels (STxMP) is supported.

[0436] According to S1610, the operation of the UE ( Figures 18 to 22 100 / 200 thereof) sending the capability information related to the panel for the transmission of the uplink channel to the base station ( Figures 18 to 22 100 / 200 thereof) may be implemented by the Figures 16 to 20 device. For example, referring to Fig.19 , one or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to send the capability information related to the panel for the transmission of the uplink channel to the base station 200.

[0437] In S1620, the UE receives configuration information related to the transmission of the uplink channel from the base station.

[0438] The configuration information may be based on Fig.15 at least one of the RRC configuration information (S1520) shown in

[0439] or the information related to the scheduling of UL transmission (S1530). Figures 18 to 22 According to S1620, the operation of the UE ( Figures 18 to 22 100 / 200 thereof) receiving the configuration information related to the transmission of the uplink channel from the base station ( Figures 16 to 20 100 / 200 thereof) may be implemented by the Fig.19 device. For example, referring to

[0440] , one or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to receive the configuration information related to the transmission of the uplink channel from the base station 200.

[0441] According to an embodiment, if the transmission of the uplink channel conflicts with the transmission of another uplink channel scheduled for the UE in the time domain, i) if the first panel related to the transmission of the uplink channel is different from the second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel may be transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel may be transmitted in a specific resource. This embodiment may be based on Proposal 1-2.

[0442] The transmission of the uplink channel conflicting with the transmission of another uplink channel scheduled for the UE in the time domain may mean that all or part of the time domain configured for the uplink channel overlaps with all or part of the time domain configured for the other uplink channel.

[0443] The first panel may include at least one panel of the UE. In the same way, the second panel may include at least one panel of the UE.

[0444] According to an embodiment, based on the priority of the uplink channel being lower than the priority of the other uplink channel, the uplink channel may be transmitted in a specific resource. If the priority of the uplink channel is higher than the priority of the other uplink channel, the uplink channel may be transmitted in a resource according to pre-configured scheduling information (i.e., the resource configured for the transmission of the uplink channel).

[0445] According to an embodiment, the specific resource may be located in a time domain where the transmission of the uplink channel is shifted from the configured time domain by a pre-configured unit. This embodiment may be based on Proposal 1-2-1.

[0446] According to an embodiment, the specific resource may be based on the resource configuring the other uplink channel. That is, the uplink channel (with low priority) may be transmitted based on piggybacking operation in the resource of the other uplink channel (with high priority). This embodiment may be based on Proposal 1-2-3.

[0447] According to an embodiment, based on the uplink channel and the other uplink channel being the same type of uplink channel, the priority may be determined according to pre-configured priority rules. This embodiment may be based on Proposal 1-2.

[0448] The priority may be determined based on pre-configured priority rules. For example,

[0449] 1) Whether the uplink channel is scheduled based on the control resource set (CORESET) with the lowest ID,

[0450] 2) Whether the uplink channel is scheduled by the downlink control information (DCI) based on a specific radio network temporary identifier (RNTI),

[0451] 3) The periodicity related to the transmission of the uplink channel,

[0452] 4) The type of information related to the uplink channel, and

[0453] 5) Whether the uplink channel is scheduled by the previous downlink control information (DCI) in the time domain,

[0454] The priority may be determined based on at least one of the above 1) to 5).

[0455] According to an embodiment, if an uplink channel and another uplink channel are transmitted simultaneously, the resources for transmitting the uplink channel and the other uplink channel may be based on 1) the same time-frequency domain or 2) the same time domain. This embodiment may be based on Proposal 2.

[0456] Based on all or part of the frequency domain configuring the transmission of the uplink channel not overlapping with all or part of the frequency domain configuring the transmission of the other uplink channel, the uplink channel and the other uplink channel may be transmitted simultaneously based on frequency-division multiplexing (FDM). This embodiment may be based on Proposal 2-1.

[0457] The uplink channel and the other uplink channel transmitted simultaneously based on FDM may be transmitted based on at least one of frequency hopping or repetition. This embodiment may be based on Proposal 2-2.

[0458] Based on the frequency-hopping boundaries configured for the uplink channel and the frequency-hopping boundaries configured for the other uplink channel being the same, the uplink channel and the other uplink channel may be transmitted simultaneously based on frequency hopping and repetition.

[0459] According to S1630, the operation of a UE ( Figures 18 to 22 100 / 200) sending an uplink channel to a base station ( Figures 18 to 22 100 / 200) based on configuration information may be implemented by Figures 16 to 20 the device of. For example, referring to Fig.19 , one or more processors 102 may control one or more transceivers 106 and / or one or more memories 104 to send an uplink channel to base station 200 based on configuration information.

[0460] The above embodiments will be described in detail below from the perspective of BS operation. The methods to be described below are only distinguished for convenience of description. Therefore, it is obvious that part of the configuration of any one method may be replaced by part of the configuration of another method, or the methods may be combined and applied. Fig.17

[0461] Fig.17 is a flowchart showing a method for a base station to receive an uplink channel in a wireless communication system according to another embodiment of the present disclosure.

[0462] Fig.17 Referring to , a method for a base station to receive an uplink channel in a wireless communication system according to another embodiment of the present disclosure may include: a step S1710 of receiving capability information related to a panel; a step S1720 of sending configuration information related to the transmission of the uplink channel; and a step S1730 of receiving the uplink channel.

[0463] In S1710, the base station receives, from the UE, capability information related to a panel for transmission of an uplink channel.

[0464] According to an embodiment, the capability information may be related to whether simultaneous transmission across multiple panels (STxMP) is supported.

[0465] According to S1710, the operation of the base station ( Figures 18 to 22 100 / 200) receiving, from the UE ( Figures 18 to 22 100 / 200), the capability information related to a panel for transmission of an uplink channel may be implemented by Figures 17 to 20 the apparatus. For example, referring to Fig.19 , one or more processors 202 may control one or more transceivers 206 and / or one or more memories 204 to receive, from the UE 100, the capability information related to a panel for transmission of an uplink channel.

[0466] In S1720, the base station transmits, to the UE, configuration information related to transmission of an uplink channel.

[0467] The configuration information may be based on Fig.15 at least one of the RRC configuration information (S1520) shown in

[0468] or information related to scheduling of UL transmission (S1530). Figures 18 to 22 According to S1720, the operation of the base station ( Figures 18 to 22 100 / 200) transmitting, to the UE ( Figures 17 to 20 100 / 200), the configuration information related to transmission of an uplink channel may be implemented by Fig.19 the apparatus. For example, referring to

[0469] , one or more processors 202 may control one or more transceivers 206 and / or one or more memories 204 to transmit, to the UE 100, the configuration information related to transmission of an uplink channel.

[0470] According to an embodiment, if the transmission of the uplink channel conflicts, in the time domain, with the transmission of another uplink channel scheduled for the base station, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel may be transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel may be transmitted in a specific resource. This embodiment may be based on Proposal 1-2.

[0471] Transmission of the uplink channel conflicting with the transmission of another uplink channel scheduled for the base station in the time domain may mean that all or part of the time domain configured for the uplink channel overlaps with all or part of the time domain configured for the other uplink channel.

[0472] The first panel may include at least one panel of the UE. In the same way, the second panel may include at least one panel of the UE.

[0473] According to an embodiment, based on the uplink channel having a lower priority than the other uplink channel, the uplink channel may be transmitted in a specific resource. If the uplink channel has a higher priority than the other uplink channel, the uplink channel may be transmitted in a resource according to preconfigured scheduling information (i.e., the resource configured for the transmission of the uplink channel).

[0474] According to an embodiment, the specific resource may be located in a time domain where the transmission of the uplink channel is shifted from the configured time domain by a preconfigured unit. This embodiment may be based on Proposal 1-2-1.

[0475] According to an embodiment, the specific resource may be based on the resource configuring another uplink channel. That is, the uplink channel (with a lower priority) may be transmitted in the resource of another uplink channel (with a higher priority) based on piggybacking operation. This embodiment may be based on Proposal 1-2-3.

[0476] According to an embodiment, based on the uplink channel and another uplink channel being the same type of uplink channel, the priority may be determined according to preconfigured priority rules. This embodiment may be based on Proposal 1-2.

[0477] The priority may be determined based on preconfigured priority rules. For example,

[0478] 1) Whether the uplink channel is scheduled based on the control resource set (CORESET) with the lowest ID,

[0479] 2) Whether the uplink channel is scheduled by downlink control information (DCI) based on a specific radio network temporary identifier (RNTI),

[0480] 3) The periodicity related to the transmission of the uplink channel,

[0481] 4) The type of information related to the uplink channel, and

[0482] 5) Whether the uplink channel is scheduled by the previous downlink control information (DCI) in the time domain,

[0483] The priority may be determined based on at least one of the above 1) to 5).

[0484] According to an embodiment, if an uplink channel and another uplink channel are transmitted simultaneously, the resources for transmitting the uplink channel and the other uplink channel may be based on 1) the same time-frequency domain or 2) the same time domain. This embodiment may be based on Proposal 2.

[0485] Based on all or part of the frequency domain for configuring the transmission of the uplink channel not overlapping with all or part of the frequency domain for configuring the transmission of the other uplink channel, the uplink channel and the other uplink channel may be transmitted simultaneously based on frequency division multiplexing (FDM). This embodiment may be based on Proposal 2-1.

[0486] The uplink channel and the other uplink channel transmitted simultaneously based on FDM may be transmitted based on at least one of frequency hopping or repetition. This embodiment may be based on Proposal 2-2.

[0487] Based on the frequency hopping boundaries configured for the uplink channel and the frequency hopping boundaries configured for the other uplink channel being the same, the uplink channel and the other uplink channel may be transmitted simultaneously based on frequency hopping and repetition.

[0488] According to S1730, the operation of a base station ( Figures 18 to 22 100 / 200) receiving an uplink channel from a UE ( Figures 18 to 22 100 / 200) based on configuration information may be implemented by the Figures 17 to 20 device. For example, referring to Fig.19 , one or more processors 202 may control one or more transceivers 206 and / or one or more memories 204 to receive an uplink channel from UE 100 based on configuration information.

[0489] Examples of communication systems applicable to the present disclosure

[0490] The various descriptions, functions, processes, proposals, methods, and / or operation flowcharts of the present disclosure described in this document may be applied to (but are not limited to) various fields that require wireless communication / connection (e.g., 5G) between devices.

[0491] Hereinafter, a more detailed description will be given with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks, or functional blocks.

[0492] Fig.18 A communication system 1 to which the present disclosure is applied is shown.

[0493] Referring to Fig.18, The communication system 1 applied to the present disclosure includes a wireless device, a base station (BS), and a network. Herein, the wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G new RAT (NR)) or long-term evolution (LTE)), and may be referred to as a communication / radio / 5G device. The wireless device may include (but is not limited to) a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a handheld device 100d, a household appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, the vehicle may include a vehicle with a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles. Herein, the vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device may include an augmented reality (AR) / virtual reality (VR) / mixed reality (MR) device, and may be implemented in the form of a head-mounted display (HMD), a head-up display (HUD) installed in a vehicle, a TV, a smart phone, a computer, a wearable device, a household appliance device, a digital sign, a vehicle, a robot, etc. The handheld device may include a smart phone, a smart board, a wearable device (e.g., a smart watch or smart glasses), and a computer (e.g., a notebook). The household appliance may include a TV, a refrigerator, and a washing machine. The IoT device may include sensors and smart meters. For example, the BS and the network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node relative to other wireless devices.

[0494] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. AI technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other through the BS 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., sidelink communication) with each other without passing through the BS / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). The IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0495] Wireless communication / connection 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS200 or BS200 / BS200. Herein, the wireless communication / connection can be established through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or, D2D communication), or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless device and the BS / wireless device can send / receive radio signals to / from each other through wireless communication / connections 150a and 150b. For example, wireless communication / connections 150a and 150b can send / receive signals through various physical channels. To this end, at least a part of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for sending / receiving radio signals can be performed based on various proposals of the present disclosure.

[0496] Examples of wireless devices applicable to the present disclosure

[0497] Fig.19 A wireless device applicable to the present disclosure is shown.

[0498] Referring to Fig.19 , the first wireless device 100 and the second wireless device 200 can send radio signals through various RATs (e.g., LTE and NR). Herein, {the first wireless device 100 and the second wireless device 200} can correspond to Fig.18 {wireless device 100x and BS200} and / or {wireless device 100x and wireless device 100x}.

[0499] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may further include one or more transceivers 106 and / or one or more antennas (antenna units) 108. The processor 102 may control the memory 104 and / or the transceiver 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 102 may process the information in the memory 104 to generate first information / signals, and then transmit radio signals including the first information / signals through the transceiver 106. The processor 102 may receive radio signals including second information / signals through the transceiver 106, and then store the information obtained by processing the second information / signals in the memory 104. The memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102. For example, the memory 104 may store software codes including commands for executing some or all of the processes controlled by the processor 102 or for implementing the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Herein, the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and / or receive radio signals through one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver 106 may be used interchangeably with the radio frequency (RF) unit. In this disclosure, the wireless device may represent a communication modem / circuit / chip.

[0500] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 202 may process the information in the memory 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver 206. The processor 202 may receive a radio signal including fourth information / signals through the transceiver 106, and then store the information obtained by processing the fourth information / signals in the memory 204. The memory 204 may be connected to the processor 202 and may store various information related to the operation of the processor 202. For example, the memory 204 may store software codes including commands for executing some or all of the processes controlled by the processor 202 or for implementing the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Herein, the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and / or receive radio signals through one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. The transceiver 206 may be used interchangeably with a radio frequency (RF) unit. In the present disclosure, the wireless device may represent a communication modem / circuit / chip.

[0501] Hereinafter, the hardware components of wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by (but not limited to) one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and obtain PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document.

[0502] One or more processors 102 and 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processor devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. The firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204 to be driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of code, commands, and / or command sets.

[0503] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories 104 and 204 may be configured by read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, register, cache memory, computer-readable storage medium, and / or combinations thereof. One or more memories 104 and 204 may be located inside and / or outside of one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 through various techniques such as wired or wireless connections.

[0504] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels mentioned in the methods and / or flowcharts of operations of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or flowcharts of operations disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and transmit and receive radio signals. For example, one or more processors 102 and 202 may execute controls such that one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may execute controls such that one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or flowcharts of operations disclosed in this document via one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert the received radio signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert the user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0505] Examples of signal processing circuits applied to the present disclosure

[0506] Fig. 20 A signal processing circuit for transmitting signals is shown.

[0507] Referring to Fig. 20 , the signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050, and a signal generator 1060. Fig. 20 The operations / functions of Fig.19 may be performed by the processors 102 and 202 and / or transceivers 106 and 206 of , but are not limited thereto. Fig. 20 The hardware components of Fig.19 can be implemented by processors 102 and 202 and / or transceivers 106 and 206 of Fig.19 . For example, blocks 1010 to 1060 can be implemented by Fig.19 processors 102 and 202 of Fig.19 . Alternatively, blocks 1010 to 1050 can be implemented by

[0508] processors 102 and 202 of Fig. 20 , and block 1060 can be implemented by

[0509] transceivers 106 and 206 of

[0510] The codeword can be converted into a radio signal via

[0511] the signal processing circuit 1000 of Fig. 20Reverse mode configuration of the signal processing procedures 1010 to 1060. For example, a wireless device (e.g., Fig.19 100 and 200) can receive radio signals from the outside through an antenna port / transceiver. The received radio signals can be converted into baseband signals by a signal restorer. To this end, the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Next, the baseband signal can be restored to a codeword through a resource demapping process, a post-coding process, a demodulation process, and a descrambling process. The codeword can be restored to the original information block through decoding. Therefore, the signal processing circuit (not shown) of the received signal can include a signal restorer, a resource demapper, a post-encoder, a demodulator, a descrambler, and a decoder.

[0512] Application examples of wireless devices used in the present disclosure

[0513] Fig.21 Another example of a wireless device to which the present disclosure is applied is shown.

[0514] The wireless device can be implemented in various forms according to usage / service (refer to Fig.18 ). Referring to Fig.21 , the wireless devices 100 and 200 can correspond to the wireless devices 100 and 200 of Fig.19 , and can be configured by various elements, components, units / parts, and / or modules. For example, each of the wireless devices 100 and 200 can include a communication unit 110, a control unit 120, a memory unit 130, and additional components 140. The communication unit can include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 can include Fig.19 one or more processors 102 and 202 and / or one or more memories 104 and 204 of Fig.19 . For example, the transceiver 114 can include

[0515] Fig.19 one or more transceivers 106 and 206 and / or one or more antennas 108 and 208 of

[0515] . The control unit 120 is electrically connected to the communication unit 110, the memory (memory unit) 130, and the additional components 140, and controls the overall operation of the wireless device. For example, the control unit 120 can control the electrical / mechanical operations of the wireless device based on programs / codes / commands / information stored in the memory unit 130. The control unit 120 can send the information stored in the memory unit 130 to the outside (e.g., other communication devices) through the communication unit 110 via a wireless / wired interface, or store the information received from the outside (e.g., other communication devices) via the wireless / wired interface through the communication unit 110 in the memory unit 130.The add-on 140 can be configured differently according to the type of wireless device. For example, the add-on 140 can include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device can be implemented in the form of (but not limited to) a robot ( Fig.18 100a), a vehicle ( Fig.18 100b-1 and 100b-2), an XR device ( Fig.18 100c), a handheld device ( Fig.18 100d), a home appliance ( Fig.18 100e), an IoT device ( Fig.18 100f), a digital broadcast terminal, a holographic device, a public safety device, an MTC device, a medical device, a fintech device (or financial device), a security device, a climate / environment device, an AI server / device ( Fig.18 400), a BS ( Fig.18 200), a network node, etc. The wireless device can be used at a mobile or fixed location according to usage examples / services.

[0516] In Fig.21 , various elements, components, units / parts, and / or modules in the wireless devices 100 and 200 can all be connected to each other through a wired interface, or at least a part of them can be wirelessly connected through the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 can be wired-connected, and the control unit 120 and the first unit (e.g., 130 and 140) can be wirelessly connected through the communication unit 110. Each element, component, unit / part, and / or module within the wireless devices 100 and 200 can also include one or more elements. For example, the control unit 120 can be configured by a collection of one or more processors. As an example, the control unit 120 can be configured by a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit, and a memory control processor. As another example, the memory 130 can be configured by a random access memory (RAM), a dynamic RAM (DRAM), a read-only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0517] Examples of Handheld Devices Applicable to the Present Disclosure

[0518] Fig. 22 Shows a handheld device to which the present disclosure is applied. The handheld device can include a smart phone, a smart board, a wearable device (e.g., a smart watch or smart glasses), or a portable computer (e.g., a notebook, etc.). The handheld device can be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).

[0519] Referring to Fig. 22 , the handheld device 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an I / O unit 140c. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 to 130 / 140a to 140c respectively correspond to Fig.21 blocks 110 to 130 / 140 of

[0520] The communication unit 110 may transmit signals (e.g., data and control signals) to and receive signals from other wireless devices or a BS. The control unit 120 may perform various operations by controlling the components of the handheld device 100. The control unit 120 may include an application processor (AP). The memory unit 130 may store data / parameters / programs / codes / commands required to drive the handheld device 100. The memory unit 130 may store input / output data / information, etc. The power supply unit 140a may supply power to the handheld device 100 and includes a wired / wireless charging circuit, a battery, etc. The interface unit 140b may support the connection of the handheld device 100 to other external devices. The interface unit 140b may include various ports (e.g., audio I / O ports and video I / O ports) for connecting to external devices. The I / O unit 140c may input or output video information / signals, audio information / signals, data, and / or information input by a user. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

[0521] As an example, in the case of data communication, the I / O unit 140c may acquire information / signals (e.g., touch, text, voice, image, or video) input by a user, and the acquired information / signals may be stored in the memory unit 130. The communication unit 110 may convert the information / signals stored in the memory into a radio signal and directly transmit the converted radio signal to other wireless devices or to the BS. The communication unit 110 may receive a radio signal from other wireless devices or the BS, and then restore the received radio signal to the original information / signals. The restored information / signals may be stored in the memory unit 130, and may be output through the I / O unit 140c as various types (e.g., text, voice, image, video, or haptic).

[0522] The effects of a method and apparatus for transmitting and receiving an uplink channel in a wireless communication system according to an embodiment of the present disclosure are described below.

[0523] According to an embodiment of the present disclosure, if the transmission of an uplink channel conflicts with the transmission of another uplink channel scheduled for a UE in the time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are transmitted simultaneously, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

[0524] Therefore, 1) if the panels used for the transmission of each uplink channel are different, a UE supporting simultaneous transmission across multiple panels (STxMP) can improve the resource utilization in the transmission of uplink channels by simultaneously transmitting multiple uplink channels.

[0525] 2) If the panels used for the transmission of each uplink channel are the same, according to the existing method, only one uplink channel is transmitted and the remaining uplink channels are discarded. However, according to an embodiment of the present disclosure, no uplink channel is discarded. For example, an uplink channel with a low priority can be transmitted in a specific resource. Therefore, the utilization rate of the resources required for the scheduling of uplink channels is increased. That is, there is no need to resend the scheduling information of the uplink channel (discarded according to the existing method).

[0526] Here, the wireless communication technology implemented in the wireless device of the present disclosure (e.g., Figure 19 100 / 200) may include Narrowband Internet of Things (NB-IoT) for low-power communication, as well as LTE, NR, and 6G. For example, the NB-IoT technology may be an example of a low-power wide area network (LPWAN) technology and may be implemented in standards such as LTE Cat NB1 and / or LTE Cat NB2, but is limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless device of the present disclosure (e.g., Figure 19 100 / 200) may perform communication based on the LTE-M technology. In this case, for example, the LTE-M technology may be an example of an LPWAN technology and may be referred to by various names such as enhanced machine type communication (eMTC). For example, the LTE-M technology may be implemented in at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-bandwidth-limited), 5) LTE-MTC, 6) LTE machine type communication, and / or 7) LTE M, and is not limited to the above names. Additionally or alternatively, the wireless device of the present disclosure (e.g., Figure 21The wireless communication technology implemented in 100 / 200) may consider low-power communication including at least one of ZigBee, Bluetooth, and low-power wide area network (LPWAN), but is not limited to the above names. For example, ZigBee technology can create a personal area network (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called various names.

[0527] The above-described embodiments of the present disclosure are combinations of elements and features of the present disclosure. Unless otherwise mentioned, an element or feature may be considered optional. Each element or feature can be practiced without being combined with other elements or features. In addition, embodiments of the present disclosure can be constructed by combining some elements and / or features. The operation order described in the embodiments of the present disclosure can be rearranged. Some configurations of any one embodiment can be included in another embodiment and can be replaced by corresponding configurations of another embodiment. It will be apparent to those skilled in the art that claims that are not explicitly referenced to each other in the appended claims can be presented as combinations of embodiments of the present disclosure, or can be included as new claims through subsequent amendments after the application is filed.

[0528] Embodiments of the present disclosure can be implemented by various means such as hardware, firmware, software, or a combination thereof. In a hardware configuration, the method according to an embodiment of the present disclosure can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.

[0529] In a firmware or software configuration, embodiments of the present disclosure can be implemented in the form of modules, procedures, functions, etc. For example, software code can be stored in a memory unit and executed by a processor. The memory can be located inside or outside the processor, and can send data to and receive data from the processor via various known means.

[0530] Those skilled in the art will understand that the present disclosure can be implemented in other specific ways other than the ways described herein without departing from the spirit and basic features of the present disclosure. Therefore, the above embodiments are to be construed as illustrative in all aspects and not restrictive. The scope of the present disclosure should be determined by the appended claims and their legal equivalents (rather than the above description), and all changes falling within the meaning and scope of equivalence of the appended claims are intended to be covered therein.

Claims

1. A method for a user equipment (UE) to transmit an uplink channel in a wireless communication system, the method comprising the following steps: Receiving a signal related to cell search from a base station, wherein the signal related to the cell search includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH); Receiving system information from the base station based on the completion of the cell search; Transmitting a preamble for a random access procedure to the base station; Receiving a response to the preamble from the base station; Transmitting capability information related to the transmission of the uplink channel to the base station based on the completion of the random access procedure; Receiving configuration information related to the transmission of the uplink channel from the base station; Receiving downlink control information (DCI) related to the scheduling of the transmission of the uplink channel from the base station; and Transmitting the uplink channel to the base station based on the configuration information, wherein the capability information includes information related to a panel for the transmission of the uplink channel, wherein, based on the transmission of the uplink channel conflicting with the transmission of another uplink channel scheduled for the UE in the time domain, i) based on a first panel related to the transmission of the uplink channel being different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are transmitted simultaneously, and ii) based on the first panel being the same as the second panel, the uplink channel is transmitted in a specific resource, wherein, based on frequency hopping being configured, based on simultaneous transmission across multiple panels (STxMP), the uplink channel and the other uplink channel are transmitted simultaneously across different panels, wherein the simultaneous transmission is based on a frequency hopping pattern in which the frequency hopping bandwidths of the uplink channel and the other uplink channel cross each other, and wherein the simultaneous transmission further includes repetition in a frequency division multiplexing (FDM) scheme.

2. The method according to claim 1, wherein Based on the priority of the uplink channel being lower than the priority of the other uplink channel, the uplink channel is transmitted in the specific resource.

3. The method according to claim 2, wherein The specific resource is in a position that is shifted by a preconfigured unit from the position in the time domain that configures the transmission of the uplink channel in the time domain.

4. The method according to claim 2, wherein, The specific resource is based on the resource that configures the other uplink channel.

5. The method according to claim 2, wherein, Based on the uplink channel and the other uplink channel being the same type of uplink channel, the priority is determined according to a preconfigured priority rule.

6. The method according to claim 5, wherein The priority is determined based on at least one of the following 1) to 5): 1) Whether the corresponding uplink channel is scheduled based on a control resource set (CORESET) with the lowest ID, 2) Whether the corresponding uplink channel is scheduled by the DCI based on a specific radio network temporary identifier (RNTI), 3) The periodicity related to the transmission of the corresponding uplink channel, 4) The type of information related to the corresponding uplink channel, and 5) Whether the corresponding uplink channel is scheduled by the DCI received previously in the time domain.

7. The method according to claim 1, wherein Based on the uplink channel and the other uplink channel being transmitted simultaneously, the resources for transmitting the uplink channel and the other uplink channel are based on 1) the same time-frequency domain or 2) the same time domain.

8. The method according to claim 7, wherein Based on the frequency domain for configuring the transmission of the uplink channel not overlapping with the frequency domain for configuring the transmission of the other uplink channel, the uplink channel and the other uplink channel are transmitted simultaneously based on the FDM.

9. The method according to claim 1, wherein, The capability information is related to whether simultaneous transmission across multiple panels (STxMP) is supported.

10. A user equipment (UE) for transmitting an uplink channel in a wireless communication system, the UE comprising: One or more transceivers; One or more processors configured to control the one or more transceivers; And One or more memories operatively connected to the one or more processors and configured to store instructions, which, when executed by the one or more processors, perform operations, wherein the operations include: Receiving a signal related to cell search from a base station, wherein the signal related to the cell search includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH); Receiving system information from the base station based on the cell search being completed; Transmitting a preamble for a random access procedure to the base station; Receiving a response to the preamble from the base station; Transmitting, based on the random access procedure being completed, capability information related to the transmission of the uplink channel to the base station; Receiving configuration information related to the transmission of the uplink channel from the base station; Receiving downlink control information (DCI) related to the scheduling of the transmission of the uplink channel from the base station; and Transmitting the uplink channel to the base station based on the configuration information, wherein the capability information includes information related to the panel for the transmission of the uplink channel, wherein based on the transmission of the uplink channel conflicting with the transmission of another uplink channel scheduled for the UE in the time domain, i) based on a first panel related to the transmission of the uplink channel being different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are transmitted simultaneously, and ii) based on the first panel being the same as the second panel, the uplink channel is transmitted in a specific resource, wherein based on frequency hopping being configured, based on simultaneous transmission across multiple panels (STxMP), the uplink channel and the other uplink channel are transmitted simultaneously across different panels, wherein the simultaneous transmission is based on a frequency hopping pattern in which the hopping bandwidths of the uplink channel and the other uplink channel cross each other, and wherein the simultaneous transmission further includes repetition in a frequency division multiplexing (FDM) scheme.

11. A method for a base station to receive an uplink channel in a wireless communication system, the method comprising the following steps: Send signals related to cell search to the user equipment UE, where the signals related to the cell search include a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH; Based on the completion of the cell search, send system information to the UE; Receive a preamble for a random access procedure from the UE; Send a response to the preamble to the UE; Based on the completion of the random access procedure, receive capability information related to the transmission of the uplink channel from the UE; Send configuration information related to the transmission of the uplink channel to the UE; Send downlink control information DCI related to the scheduling of the transmission of the uplink channel to the UE; and Receive the uplink channel from the UE based on the configuration information, where the capability information includes information related to a panel for the transmission of the uplink channel through the UE, where, based on the transmission of the uplink channel through the UE conflicting with the transmission of another uplink channel scheduled for the UE in the time domain, i) based on a first panel related to the transmission of the uplink channel through the UE being different from a second panel related to the transmission of the other uplink channel through the UE, the uplink channel and the other uplink channel are transmitted simultaneously, and ii) based on the first panel being the same as the second panel, the uplink channel is transmitted by the UE in a specific resource, where, based on frequency hopping being configured, based on simultaneous transmission across multiple panels STxMP, the uplink channel and the other uplink channel are transmitted simultaneously across different panels, where the simultaneous transmission is based on a frequency hopping pattern in which the hopping bandwidths of the uplink channel and the other uplink channel cross each other, and where the simultaneous transmission also includes repetition in a frequency division multiplexing FDM scheme.

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