WO2020162718A1

WO2020162718A1 - Method for performing uplink transmission in wireless communication system and apparatus therefor

Info

Publication number: WO2020162718A1
Application number: PCT/KR2020/001784
Authority: WO
Inventors: 박종현; 강지원; 고성원; 박해욱
Original assignee: 엘지전자 주식회사
Priority date: 2019-02-07
Filing date: 2020-02-07
Publication date: 2020-08-13

Abstract

The present invention provides a method for performing uplink transmission in a wireless communication system and an apparatus therefor. Specifically, a method for transmitting an uplink data channel by a user equipment (UE) in a wireless communication system may comprise the steps of: receiving configuration information related to the uplink data channel; receiving downlink control information for scheduling transmission of the uplink data channel; and on the basis of the downlink control information, transmitting the uplink data channel, wherein the downlink control information includes: i) first information indicating a transmission unit; and ii) second information indicating a beam, which are related to transmission of the uplink data channel, and the first information and the second information are on the basis of a first field and a second field in the downlink control information, respectively.

Description

Method for performing uplink transmission in wireless communication system and apparatus therefor

The present specification relates to a wireless communication system, and more particularly, to a method for performing uplink transmission in a wireless communication system and an apparatus supporting the same.

Mobile communication systems have been developed to provide voice services while ensuring user mobility. However, the mobile communication system has expanded to not only voice but also data services, and nowadays, the explosive increase in traffic causes a shortage of resources and users demand higher speed services, so a more advanced mobile communication system is required. .

The requirements of the next generation mobile communication system are to support the explosive data traffic, the dramatic increase in the transmission rate per user, the acceptance of the number of connected devices, the extremely low end-to-end latency, and high energy efficiency. It should be possible. For this, dual connectivity, Massive Multiple Input Multiple Output (MIMO), In-band Full Duplex, Non-Orthogonal Multiple Access (NOMA), and Super Wideband Various technologies such as wideband) support and device networking are being studied.

The present specification proposes a method for performing uplink transmission in a wireless communication system.

Specifically, the present specification proposes a method of performing signaling related to setting and/or indication of a panel unit and/or a beam unit in relation to transmission and reception of an uplink data channel (eg, PUSCH). .

The technical problems to be achieved in the present specification are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. I will be able to.

In a method for transmitting an uplink data channel by a user equipment (UE) in a wireless communication system according to an embodiment of the present specification, the method includes: receiving configuration information related to the uplink data channel; Receiving downlink control information for scheduling transmission of the uplink data channel; And transmitting the uplink data channel based on the downlink control information, wherein the downlink control information is i) first information indicating a transmission unit related to transmission of the uplink data channel And ii) second information indicating a beam, wherein the first information and the second information may be based on a first field and a second field in the downlink control information, respectively.

In the method according to an embodiment of the present specification, the first information may include a transmission unit identifier mapped to a codepoint of the first field. Also, the beam based on the second information may be one of one or more beams associated with a transmission unit based on the first information. Also, the transmission unit may be set in units of an SRS resource set related to transmission of the uplink data channel through higher layer signaling. In addition, the SRS resource associated with the beam may be one of one or more SRS resources included in the SRS resource set associated with the transmission unit.

In the method according to an embodiment of the present specification, the second field may be an SRS Resource Indicator (SRI) field indicating an SRS resource related to transmission of the uplink data channel.

In the method according to an embodiment of the present specification, the method further includes transmitting information on the maximum number of transmission units that the terminal can support to a base station, wherein the terminal supports it based on the maximum number. One or more transmission units may be sequentially mapped to code values of the first field.

A user equipment (UE) for transmitting an uplink data channel in a wireless communication system according to an embodiment of the present specification, the terminal comprising: one or more transceivers; One or more processors; And one or more memories that store instructions on operations executed by the one or more processors, and are connected to the one or more processors, wherein the operations include configuration information related to the uplink data channel Receiving; Receiving downlink control information for scheduling transmission of the uplink data channel; And transmitting the uplink data channel based on the downlink control information, wherein the downlink control information is i) first information indicating a transmission unit related to transmission of the uplink data channel And ii) second information indicating a beam, wherein the first information and the second information may be based on a first field and a second field in the downlink control information, respectively.

In a method for receiving an uplink data channel by a base station (BS) in a wireless communication system according to an embodiment of the present specification, the method includes: transmitting configuration information related to the uplink data channel; Transmitting downlink control information for scheduling transmission of the uplink data channel; And receiving the uplink data channel transmitted based on the downlink control information, wherein the downlink control information includes i) a first indicating a transmission unit related to transmission of the uplink data channel. Information and ii) second information indicating a beam, and the first information and the second information may be based on a first field and a second field in the downlink control information, respectively.

In a base station (BS) receiving an uplink data channel in a wireless communication system according to an embodiment of the present specification, the base station comprises: one or more transceivers; One or more processors; And one or more memories that store instructions on operations executed by the one or more processors, and are connected to the one or more processors, wherein the operations include configuration information related to the uplink data channel Transmitting; Transmitting downlink control information for scheduling transmission of the uplink data channel; And receiving the uplink data channel based on the downlink control information, wherein the downlink control information is i) first information indicating a transmission unit related to transmission of the uplink data channel And ii) second information indicating a beam, wherein the first information and the second information may be based on a first field and a second field in the downlink control information, respectively.

An apparatus comprising one or more memories according to an embodiment of the present specification and one or more processors functionally connected to the one or more memories, wherein the one or more processors include a configuration related to the uplink data channel. Receive information; Receiving downlink control information for scheduling transmission of the uplink data channel; Based on the downlink control information, control to transmit the uplink data channel, wherein the downlink control information includes i) first information indicating a transmission unit related to transmission of the uplink data channel, and ii ) It includes second information indicating a beam, and the first information and the second information may be based on a first field and a second field in the downlink control information, respectively.

In one or more non-transitory computer-readable medium storing one or more instructions according to an embodiment of the present specification, the executable by one or more processors One or more commands may include: a user equipment receiving configuration information related to the uplink data channel; The terminal receives downlink control information for scheduling transmission of the uplink data channel; The terminal controls to transmit the uplink data channel based on the downlink control information, wherein the downlink control information is i) a first indicating a transmission unit related to transmission of the uplink data channel Information and ii) second information indicating a beam, and the first information and the second information may be based on a first field and a second field in the downlink control information, respectively.

According to an embodiment of the present specification, in relation to an operation in which the terminal performs codebook-based PUSCH transmission and/or non-codebook-based PUSCH transmission, the base station controls uplink transmission in a specific panel unit and/or a specific beam unit of the terminal. You can get the effect you can do.

In addition, according to an embodiment of the present specification, there is an effect that panel and/or beam-selective PUSCH scheduling may be performed with improved power control in units of panel and/or beam.

The effects obtained in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description. .

Included as part of the detailed description to aid understanding of the present invention, the accompanying drawings provide embodiments of the present invention and describe the technical features of the present invention together with the detailed description.

1 shows an example of the overall system structure of the NR to which the method proposed in this specification can be applied.

2 shows a relationship between an uplink frame and a downlink frame in a wireless communication system to which the method proposed in this specification can be applied.

3 shows an example of a frame structure in an NR system.

4 shows an example of a resource grid supported by a wireless communication system to which the method proposed in the present specification can be applied.

5 shows examples of an antenna port and a resource grid for each neurology to which the method proposed in the present specification can be applied.

6 illustrates physical channels and general signal transmission used in a 3GPP system.

7 shows an example of beam formation using SSB and CSI-RS.

8 shows an example of a UL BM procedure using SRS.

9 is a flowchart showing an example of a UL BM procedure using SRS.

10 shows an example of a PUSCH transmission/reception procedure to which the method proposed in the present specification can be applied.

FIG. 11 shows an example of a flowchart of an operation of a terminal performing uplink data channel (eg, PUSCH) transmission based on scheduling in a panel unit and/or a beam unit to which the method proposed in this specification can be applied.

12 shows an example of a flowchart of an operation of a base station that receives an uplink data channel (eg, PUSCH) based on scheduling in a panel unit and/or a beam unit to which the method proposed in this specification can be applied.

13 shows an example of an operation flowchart of a terminal transmitting an uplink data channel in a wireless communication system to which the method proposed in this specification can be applied.

14 shows an example of an operation flowchart of a base station receiving an uplink data channel in a wireless communication system to which the method proposed in the present specification can be applied.

15 illustrates a communication system 1500 applied to the present invention.

16 illustrates a wireless device applicable to the present invention.

17 illustrates a signal processing circuit for a transmission signal.

18 shows another example of a wireless device applied to the present invention.

19 illustrates a portable device applied to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The detailed description to be disclosed hereinafter together with the accompanying drawings is intended to describe exemplary embodiments of the present invention, and is not intended to represent the only embodiments in which the present invention may be practiced. The following detailed description includes specific details to provide a thorough understanding of the present invention. However, one of ordinary skill in the art appreciates that the invention may be practiced without these specific details.

In some cases, in order to avoid obscuring the concept of the present invention, well-known structures and devices may be omitted, or may be illustrated in a block diagram form centering on core functions of each structure and device.

Hereinafter, downlink (DL) means communication from a base station to a terminal, and uplink (UL) means communication from a terminal to a 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. Base stations (BSs) are fixed stations, Node Bs, evolved-NodeBs (eNBs), Next Generation NodeBs (gNBs), base transceiver systems (BTSs), access points (APs), networks (5G) Network), AI system, road side unit (RSU), vehicle, robot, drone (Unmanned Aerial Vehicle, UAV), AR (Augmented Reality) device, VR (Virtual Reality) device have. In addition, the terminal may be fixed or mobile, and UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile) Station), WT (Wireless terminal), MTC (Machine-Type Communication) device, M2M (Machine-to-Machine) device, D2D (Device-to-Device) device, vehicle, robot, AI module , Drone (Unmanned Aerial Vehicle, UAV), AR (Augmented Reality) device, VR (Virtual Reality) device.

The following technology can be used for various radio access systems such as CDMA, FDMA, TDMA, OFDMA, SC-FDMA, and the like. CDMA may be implemented with a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA may be implemented with a wireless technology such as Global System for Mobile communications (GSM)/General Packet Radio Service (GPRS)/Enhanced Data Rates for GSM Evolution (EDGE). OFDMA may be implemented with a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA). UTRA is a part of Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA, and LTE-A (Advanced)/LTE-A pro is an evolved version of 3GPP LTE. 3GPP NR (New Radio or New Radio Access Technology) is an evolved version of 3GPP LTE/LTE-A/LTE-A pro.

For clarity, the description is based on a 3GPP communication system (eg, LTE-A, NR), but the technical spirit of the present invention is not limited thereto. LTE refers to the technology after 3GPP TS 36.xxx Release 8. In detail, LTE technology after 3GPP TS 36.xxx Release 10 is called LTE-A, and LTE technology after 3GPP TS 36.xxx Release 13 is called LTE-A pro. 3GPP NR means a technology after TS 38.xxx Release 15. LTE/NR may be referred to as a 3GPP system. "xxx" means standard document detail number. LTE/NR may be collectively referred to as a 3GPP system. Background art, terms, abbreviations, and the like used in the description of the present invention may refer to matters described in a standard document published prior to the present invention. For example, you can refer to the following document:

3GPP LTE

-36.211: Physical channels and modulation

-36.212: Multiplexing and channel coding

-36.213: Physical layer procedures

-36.300: Overall description

-36.331: Radio Resource Control (RRC)

3GPP NR

-38.211: Physical channels and modulation

-38.212: Multiplexing and channel coding

-38.213: Physical layer procedures for control

-38.214: Physical layer procedures for data

-38.300: NR and NG-RAN Overall Description

-36.331: Radio Resource Control (RRC) protocol specification

As more communication devices require a larger communication capacity, there is a need for improved mobile broadband communication compared to the existing radio access technology. In addition, massive MTC (Machine Type Communications), which provides various services anytime, anywhere by connecting multiple devices and objects, is also one of the major issues to be considered in next-generation communication. In addition, the design of communication systems considering services/terminals that are sensitive to reliability and latency is being discussed. As described above, the introduction of next-generation radio access technology in consideration of eMBB (enhanced mobile broadband communication), Mmtc (massive MTC), and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed, and the technology is called NR for convenience in this specification. . NR is an expression showing an example of 5G radio access technology (RAT).

The three main requirements areas of 5G are: (1) Enhanced Mobile Broadband (eMBB) area, (2) Massive Machine Type Communication (mMTC) area, and (3) Super-reliability and It includes the area of ultra-reliable and low latency communications (URLLC).

Some use cases may require multiple areas for optimization, and other use cases may focus on only one key performance indicator (KPI). 5G supports these various use cases in a flexible and reliable way.

eMBB goes far beyond basic mobile Internet access, and covers media and entertainment applications in rich interactive work, cloud or augmented reality. Data is one of the key drivers of 5G, and it may not be possible to see dedicated voice services for the first time in the 5G era. In 5G, voice is expected to be handled as an application program simply using the data connection provided by the communication system. The main causes for increased traffic volume are increased content size and increased number of applications requiring high data rates. Streaming services (audio and video), interactive video and mobile Internet connections will become more prevalent as more devices connect to the Internet. Many of these applications require always-on connectivity to push real-time information and notifications to the user. Cloud storage and applications are rapidly increasing in mobile communication platforms, which can be applied to both work and entertainment. And, cloud storage is a special use case that drives the growth of uplink data rates. 5G is also used for remote work in the cloud, and requires much lower end-to-end delays to maintain a good user experience when tactile interfaces are used. Entertainment For example, cloud gaming and video streaming are another key factor in increasing demand for mobile broadband capabilities. Entertainment is essential on smartphones and tablets anywhere, including high mobility environments such as trains, cars and airplanes. Another use case is augmented reality and information retrieval for entertainment. Here, augmented reality requires very low latency and instantaneous amount of data.

In addition, one of the most anticipated 5G use cases relates to the ability to seamlessly connect embedded sensors in all fields, namely mMTC. It is predicted that by 2020, there are 20 billion potential IoT devices. Industrial IoT is one of the areas where 5G plays a key role in enabling smart cities, asset tracking, smart utilities, agriculture and security infrastructure.

URLLC includes new services that will transform the industry through ultra-reliable/low-latency links, such as remote control of the main infrastructure and self-driving vehicles. The level of reliability and delay is essential for smart grid control, industrial automation, robotics, drone control and coordination.

Next, look at a number of examples in more detail.

5G can complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS) as a means of providing streams rated at hundreds of megabits per second to gigabits per second. This fast speed is required to deliver TV in 4K (6K, 8K and above) resolutions as well as virtual and augmented reality. Virtual Reality (VR) and Augmented Reality (AR) applications involve almost immersive sports events. Certain application programs may require special network settings. For VR games, for example, game companies may need to integrate the core server with the network operator's edge network server to minimize latency.

Automotive is expected to be an important new driver for 5G, along with many use cases for mobile communications to vehicles. For example, entertainment for passengers requires simultaneous high capacity and high mobility mobile broadband. The reason is that future users continue to expect high quality connections regardless of their location and speed. Another application example in the automotive field is an augmented reality dashboard. It identifies objects in the dark over what the driver sees through the front window and superimposes information that tells the driver about the distance and movement of the object. In the future, wireless modules will enable communication between vehicles, exchange of information between the vehicle and the supporting infrastructure, and exchange of information between the vehicle and other connected devices (eg, devices carried by pedestrians). The safety system guides alternative courses of action to help the driver drive more safely, reducing the risk of accidents. The next step will be remote control or a self-driven vehicle. This requires very reliable and very fast communication between different self-driving vehicles and between the vehicle and the infrastructure. In the future, self-driving vehicles will perform all driving activities, and drivers will focus only on traffic beyond which the vehicle itself cannot identify. The technical requirements of self-driving vehicles require ultra-low delays and ultra-high-speed reliability to increase traffic safety to levels beyond human reach.

Smart cities and smart homes, referred to as smart societies, will be embedded in high-density wireless sensor networks. The distributed network of intelligent sensors will identify the conditions for cost and energy-efficient maintenance of a city or home. A similar setup can be done for each household. Temperature sensors, window and heating controllers, burglar alarms and consumer electronics are all connected wirelessly. Many of these sensors are typically low data rates, low power and low cost. However, for example, real-time HD video may be required in certain types of devices for surveillance.

The consumption and distribution of energy, including heat or gas, is highly decentralized, requiring automated control of distributed sensor networks. The smart grid interconnects these sensors using digital information and communication technologies to collect information and act accordingly. This information can include the behavior of suppliers and consumers, allowing smart grids to improve efficiency, reliability, economics, sustainability of production and the distribution of fuels such as electricity in an automated manner. The smart grid can be viewed as another sensor network with low latency.

The health sector has many applications that can benefit from mobile communications. The communication system can support telemedicine that provides clinical care from a distance. This helps to reduce barriers to distance and can improve access to medical services that are not continuously available in remote rural areas. It is also used to save lives in critical care and emergency situations. A mobile communication based wireless sensor network can provide remote monitoring and sensors for parameters such as heart rate and blood pressure.

Wireless and mobile communications are becoming increasingly important in industrial applications. Wiring is expensive to install and maintain. Thus, the possibility of replacing cables with wireless links that can be reconfigured is an attractive opportunity in many industries. However, achieving this requires that the wireless connection operate with cable-like delay, reliability and capacity, and that management be simplified. Low latency and very low error probability are new requirements that need to be connected to 5G.

Logistics and freight tracking are important use cases for mobile communications that enable the tracking of inventory and packages from anywhere using location-based information systems. Logistics and freight tracking use cases typically require low data rates, but require a wide range and reliable location information.

The new RAT system including NR uses an OFDM transmission scheme or a similar transmission scheme. The new RAT system may follow OFDM parameters different from those of LTE. Alternatively, the new RAT system follows the existing numerology of LTE/LTE-A, but may have a larger system bandwidth (eg, 100 MHz). Or, one cell may support a plurality of neurology. That is, terminals operating with different numerology can coexist in one cell.

Numerology corresponds to one subcarrier spacing in the frequency domain. By scaling the reference subcarrier spacing to an integer N, different numerology can be defined.

용어 정의Term Definition

eLTE eNB: The eLTE eNB is an evolution of the eNB that supports connectivity to EPC and NGC.

gNB: A node that supports NR as well as connection with NGC.

New RAN: A radio access network that supports NR or E-UTRA or interacts with NGC.

Network slice: A network slice is a network defined by an operator to provide an optimized solution for specific market scenarios requiring specific requirements with end-to-end coverage.

Network function: A network function is a logical node within a network infrastructure with well-defined external interfaces and well-defined functional behavior.

NG-C: Control plane interface used for NG2 reference point between new RAN and NGC.

NG-U: User plane interface used for NG3 reference point between new RAN and NGC.

Non-standalone NR: A deployment configuration in which gNB requires LTE eNB as an anchor for control plane connection to EPC or eLTE eNB as an anchor for control plane connection to NGC.

Non-standalone E-UTRA: Deployment configuration in which eLTE eNB requires gNB as anchor for control plane connection to NGC.

User plane gateway: The endpoint of the NG-U interface.

시스템 일반System general

Referring to FIG. 1, NG-RAN consists of NG-RA user planes (new AS sublayer/PDCP/RLC/MAC/PHY) and gNBs that provide control plane (RRC) protocol termination for UE (User Equipment). do.

The gNBs are interconnected via X _n interfaces.

The gNB is also connected to the NGC through the NG interface.

More specifically, the gNB is connected to an Access and Mobility Management Function (AMF) through an N2 interface and a User Plane Function (UPF) through an N3 interface.

NR(New Rat) 뉴머롤로지(Numerology) 및 프레임(frame) 구조NR (New Rat) Numerology and Frame Structure

In the NR system, multiple numerologies may be supported. Here, the neurology may be defined by subcarrier spacing and CP (Cyclic Prefix) overhead. In this case, the plurality of subcarrier intervals is an integer N (or,

) Can be derived by scaling. Further, even if it is assumed that a very low subcarrier spacing is not used at a very high carrier frequency, the neurology to be used can be selected independently of the frequency band.

In addition, in the NR system, various frame structures according to a plurality of pneumatics may be supported.

Hereinafter, an orthogonal frequency division multiplexing (OFDM) numerology and a frame structure that can be considered in an NR system will be described.

Multiple OFDM neurology supported in the NR system may be defined as shown in Table 1.

NR supports multiple numerology (or subcarrier spacing (SCS)) to support various 5G services. For example, if the SCS is 15 kHz, it supports a wide area in traditional cellular bands, and when the SCS is 30 kHz/60 kHz, it is dense-urban, lower latency. And a wider carrier bandwidth, and when the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz is supported to overcome phase noise.

The NR frequency band is defined as a frequency range of two types (FR1, FR2). FR1, FR2 may be configured as shown in Table 2 below. In addition, FR2 may mean millimeter wave (mmW).

Regarding the frame structure in the NR system, the sizes of various fields in the time domain are

It is expressed as a multiple of the unit of time. From here,

ego,

to be. Downlink (uplink) and uplink (uplink) transmission is

It consists of a radio frame (radio frame) having a section of. Here, each radio frame is

It is composed of 10 subframes (subframes) having an interval of. In this case, there may be one set of frames for uplink and one set of frames for downlink.

As shown in Figure 2, the transmission of the uplink frame number i from the terminal (User Equipment, UE) than the start of the downlink frame in the corresponding terminal

You have to start earlier.

New Merology

For, the slots (slots) in the subframe

Are numbered in increasing order of, within the radio frame

It is numbered in increasing order. One slot

Consisting of consecutive OFDM symbols of,

Is determined according to the numerology and slot configuration used. Slot in subframe

Start of OFDM symbol in the same subframe

It is aligned with the beginning of time.

Not all terminals can transmit and receive at the same time, which means that all OFDM symbols in a downlink slot or an uplink slot cannot be used.

Table 3 shows the number of OFDM symbols per slot in a normal CP (

), the number of slots per radio frame (

), Number of slots per subframe (

), and Table 3 shows the number of OFDM symbols per slot, the number of slots per radio frame, and the number of slots per subframe in an extended CP.

3 shows an example of a frame structure in an NR system. 3 is merely for convenience of description and does not limit the scope of the present invention.

In the case of Table 4, as an example when μ=2, that is, when the subcarrier spacing (SCS) is 60 kHz, referring to Table 3, 1 subframe (or frame) may include 4 slots, and , 1 subframe={1,2,4} slots shown in FIG. 3 are examples, and the number of slot(s) that may be included in 1 subframe may be defined as shown in Table 3.

Also, a mini-slot may consist of 2, 4 or 7 symbols, or more or fewer symbols.

In relation to the physical resource in the NR system, an antenna port, a resource grid, a resource element, a resource block, a carrier part, etc. Can be considered.

Hereinafter, the physical resources that can be considered in the NR system will be described in detail.

First, with respect to the antenna port, the antenna port is defined such that the channel on which the symbol on the antenna port is carried can be deduced from the channel on which the other symbol on the same antenna port is carried. If the large-scale property of a channel carrying a symbol on one antenna port can be inferred from a channel carrying a symbol on another antenna port, the two antenna ports are QC/QCL (quasi co-located or quasi co-location). Here, the wide-ranging characteristics include one or more of delay spread, doppler spread, frequency shift, average received power, and received timing.

Referring to Figure 4, the resource grid on the frequency domain

It is composed of subcarriers, and one subframe

An exemplary description is made of OFDM symbols, but is not limited thereto.

In the NR system, the transmitted signal is

One or more resource grids composed of subcarriers and

It is described by the OFDM symbols of. From here,

to be. remind

Denotes a maximum transmission bandwidth, which may vary between uplink and downlink as well as numerology.

In this case, as shown in Fig. 5, the neurology

And one resource grid for each antenna port p.

New Merology

And each element of the resource grid for the antenna port p is referred to as a resource element, an index pair

Is uniquely identified by From here,

Is an index on the frequency domain,

Denotes the location of the symbol in the subframe. When referring to a resource element in a slot, an index pair

Is used. From here,

to be.

New Merology

And resource elements for antenna port p

Is the complex value

Corresponds to If there is no risk of confusion, or if a particular antenna port or numerology is not specified, the indices p and

Can be dropped, resulting in a complex value

or

Can be

In addition, a physical resource block (physical resource block) on the frequency domain

It is defined as consecutive subcarriers.

Point A serves as a common reference point of the resource block grid and can be obtained as follows.

-OffsetToPointA for PCell downlink indicates the frequency offset between the lowest sub-carrier and point A of the lowest resource block overlapping the SS/PBCH block used by the UE for initial cell selection, 15 kHz subcarrier spacing for FR1 and Expressed in resource block units assuming a 60 kHz subcarrier spacing for FR2;

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

Common resource blocks set the subcarrier interval

Numbered from 0 to the top in the frequency domain for.

Subcarrier spacing setting

The center of subcarrier 0 of the common resource block 0 for'point A'coincides with'point A'. Common resource block number (number) in the frequency domain

And subcarrier spacing

The resource element for (k,l) may be given as in Equation 1 below.

From here,

Is

It can be defined relative to point A so that it corresponds to a subcarrier centered on point A. Physical resource blocks are from 0 in the bandwidth part (BWP)

Numbered to,

Is the number of the BWP. Physical resource block in BWP i

And common resource blocks

The relationship between can be given by Equation 2 below.

From here,

May be a common resource block in which the BWP starts relative to the common resource block 0.

물리 채널 및 일반적인 신호 전송Physical channel and general signal transmission

6 illustrates physical channels and general signal transmission used in a 3GPP system. In a wireless communication system, a terminal receives information from a base station through a downlink (DL), and the terminal transmits information to the base station through an uplink (UL). The information transmitted and received by the base station and the terminal includes data and various control information, and various physical channels exist according to the type/use of the information they transmit and receive.

When the terminal is powered on or newly enters a cell, the terminal performs an initial cell search operation such as synchronizing with the base station (S601). To this end, the UE receives a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) from the base station to synchronize with the base station and obtain information such as a cell ID. Thereafter, the terminal may receive a physical broadcast channel (PBCH) from the base station to obtain intra-cell broadcast information. Meanwhile, the UE may check a downlink channel state by receiving a downlink reference signal (DL RS) in an initial cell search step.

After completing the initial cell search, the UE acquires more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) according to the information carried on the PDCCH. Can do it (S602).

On the other hand, when accessing the base station for the first time or when there is no radio resource for signal transmission, the terminal may perform a random access procedure (RACH) with respect to the base station (S603 to S606). To this end, the UE transmits a specific sequence as a preamble through a physical random access channel (PRACH) (S603 and S605), and a response message to the preamble through a PDCCH and a corresponding PDSCH (RAR (Random Access Response) message) In the case of contention-based RACH, a contention resolution procedure may be additionally performed (S606).

After performing the above-described procedure, the UE receives PDCCH/PDSCH (S607) and Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel as a general uplink/downlink signal transmission procedure. Control Channel; PUCCH) transmission (S608) may be performed. In particular, the UE may receive downlink control information (DCI) through the PDCCH. Here, the DCI includes control information such as resource allocation information for the terminal, and formats may be differently applied according to purpose of use.

Meanwhile, control information that the UE transmits to the base station through the uplink or that the UE receives from the base station includes a downlink/uplink ACK/NACK signal, a channel quality indicator (CQI), a precoding matrix index (PMI), and a rank indicator (RI). ) And the like. The UE may transmit control information such as CQI/PMI/RI described above through PUSCH and/or PUCCH.

빔 관리(Beam Management, BM)Beam Management (BM)

The BM procedure includes a base station (e.g., gNB, TRP, etc.) and/or a terminal (e.g., UE) beam set that can be used for downlink (DL) and uplink (UL) transmission/reception. As L1 (layer 1)/L2 (layer 2) procedures for obtaining and maintaining, the following procedures and terms may be included.

-Beam measurement: An operation in which the base station or the UE measures the characteristics of the received beamforming signal.

-Beam determination: An operation in which the base station or the UE selects its own transmission beam (Tx beam) / reception beam (Rx beam).

-Beam sweeping: An operation of covering a spatial area using a transmit and/or receive beam for a predetermined time interval in a predetermined manner.

-Beam report: an operation in which the UE reports information on a beam formed signal based on beam measurement.

The BM procedure can be divided into (1) a DL BM procedure using a synchronization signal (SS)/physical broadcast channel (PBCH) block or a CSI-RS, and (2) a UL BM procedure using a sounding reference signal (SRS). In addition, each BM procedure may include Tx beam sweeping for determining the Tx beam and Rx beam sweeping for determining the Rx beam.

Downlink Beam Management Procedure (DL BM Procedure)

The downlink beam management procedure (DL BM procedure) includes (1) the base station transmitting a beamforming DL RS (eg, CSI-RS or SS block (SSB)) and (2) the terminal transmitting a beam report. It may include steps.

Here, the beam reporting may include a preferred DL RS ID (identifier) (s) and L1-RSRP corresponding thereto.

The DL RS ID may be an SSB resource indicator (SSBRI) or a CSI-RS resource indicator (CRI).

7 shows an example of beam formation using SSB and CSI-RS.

As shown in FIG. 7, an SSB beam and a CSI-RS beam may be used for beam measurement. The measurement metric is L1-RSRP for each resource/block. SSB is used for coarse beam measurement, and CSI-RS can be used for fine beam measurement. SSB can be used for both Tx beam sweeping and Rx beam sweeping. Rx beam sweeping using SSB may be performed while the UE changes the Rx beam for the same SSBRI across multiple SSB bursts. Here, one SS burst includes one or more SSBs, and one SS burst set includes one or more SSB bursts.

DL BM related beam indication

The UE may receive RRC configuration of a list of up to M candidate transmission configuration indication (TCI) states for at least QCL (Quasi Co-location) indication purposes. Here, M may be 64.

Each TCI state can be set as one RS set. Each ID of a DL RS for spatial QCL purpose (QCL Type D) in at least an RS set may refer to one of DL RS types such as SSB, P-CSI RS, SP-CSI RS, and A-CSI RS. .

At least, initialization/update of the ID of the DL RS(s) in the RS set used for spatial QCL purposes may be performed through at least explicit signaling.

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

The TCI-State IE is associated with one or two DL reference signals (RS) corresponding quasi co-location (QCL) types.

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 is a reference that is a source of quasi co-location for the target antenna port(s). Represents an antenna port(s) or a reference signal including it. The target antenna port(s) may be CSI-RS, PDCCH DMRS, or PDSCH DMRS. For example, in order to indicate QCL reference RS information for NZP CSI-RS, a corresponding TCI state ID may be indicated in NZP CSI-RS resource configuration information. As another example, in order to indicate QCL reference information for the PDCCH DMRS antenna port(s), a TCI state ID may be indicated in each CORESET setting. As another example, in order to indicate QCL reference information for the PDSCH DMRS antenna port(s), the TCI state ID may be indicated through DCI.

Quasi-Co Location (QCL)

The antenna port is defined so that a channel carrying a symbol on an antenna port can be inferred from a channel carrying another symbol on the same antenna port. When the property of a channel carrying a symbol on one antenna port can be inferred from a channel carrying a symbol on another antenna port, the two antenna ports are QC/QCL (quasi co-located or quasi co-location). ) It can be said that it is in a relationship.

Here, the channel characteristics are delay spread, Doppler spread, frequency/Doppler shift, average received power, and received timing/average delay) and Spatial RX parameter. Here, the Spatial Rx parameter means a spatial (receiving) channel characteristic parameter such as angle of arrival.

The UE may be configured as a list of up to M TCI-State configurations in the higher layer parameter PDSCH-Config in order to decode the PDSCH according to the detected PDCCH having DCI intended for the UE and a given serving cell. The M depends on the UE capability.

Each TCI-State includes a parameter for setting a quasi co-location relationship between one or two DL reference signals and the DM-RS port of the PDSCH.

The Quasi co-location relationship is set with the higher layer parameter qcl-Type1 for the first DL RS and qcl-Type2 for the second DL RS (if set). In the case of two DL RSs, the QCL type is not the same regardless of whether the reference is the same DL RS or different DL RSs.

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:

-'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}

-'QCL-TypeB': {Doppler shift, Doppler spread}

-'QCL-TypeC': {Doppler shift, average delay}

-'QCL-TypeD': {Spatial Rx parameter}

For example, when the target antenna port is a specific NZP CSI-RS, the corresponding NZP CSI-RS antenna ports may indicate/set that a specific TRS and a specific SSB and a QCL in a QCL-Type A perspective, and a specific SSB and a QCL in a QCL-Type D perspective. have. The terminal receiving this indication/configuration receives the corresponding NZP CSI-RS using the Doppler and delay values measured in the QCL-TypeA TRS, and applies the reception beam used for QCL-TypeD SSB reception to the corresponding NZP CSI-RS reception. can do.

The UE may receive an activation command by MAC CE signaling used to map up to 8 TCI states to the codepoint of the DCI field'Transmission Configuration Indication'.

UL BM procedure

In the UL BM, beam reciprocity (or beam correspondence) between Tx beam and Rx beam may or may not be established according to UE implementation. If reciprocity between the Tx beam and the Rx beam is established in both the base station and the terminal, a UL beam pair may be matched through a DL beam pair. However, when the reciprocity between the Tx beam and the Rx beam is not established at either of the base station and the terminal, a UL beam pair determination process is required separately from the DL beam pair determination.

In addition, even when both the base station and the terminal maintain beam correspondence, the base station can use the UL BM procedure to determine the DL Tx beam without requesting the terminal to report a preferred beam.

UL BM may be performed through beamformed UL SRS transmission, and whether to apply the UL BM of the SRS resource set is set by (higher layer parameter) usage. When usage is set to'BeamManagement (BM)', only one SRS resource may be transmitted to each of a plurality of SRS resource sets at a given time instant.

The terminal may receive one or more Sounding Reference Symbol (SRS) resource sets set by the (higher layer parameter) SRS-ResourceSet (through higher layer signaling, RRC signaling, etc.). For each SRS resource set, the UE may be configured with K≥1 SRS resources (higher later parameter SRS-resource). Here, K is a natural number, and the maximum value of K is indicated by SRS_capability.

Like the DL BM, the UL BM procedure can be divided into a Tx beam sweeping of a terminal and an Rx beam sweeping of a base station.

8 shows an example of a UL BM procedure using SRS.

Figure 8 (a) shows the Rx beam determination procedure of the base station, Figure 8 (b) shows the Tx beam sweeping procedure of the terminal.

9 is a flowchart showing an example of a UL BM procedure using SRS.

-The terminal receives RRC signaling (eg, SRS-Config IE) including a usage parameter set to'beam management' (higher layer parameter) from the base station (S910).

Table 6 shows an example of an SRS-Config IE (Information Element), and the SRS-Config IE is used for SRS transmission configuration. The SRS-Config IE includes a list of SRS-Resources and a list of SRS-ResourceSets. Each SRS resource set means a set of SRS-resources.

The network may trigger transmission of the SRS resource set using the configured aperiodicSRS-ResourceTrigger (L1 DCI).

In Table 6, usage indicates a higher layer parameter indicating whether the SRS resource set is used for beam management, codebook-based or non-codebook-based transmission. The usage parameter corresponds to the L1 parameter'SRS-SetUse'. 'spatialRelationInfo' is a parameter indicating the setting of the spatial relation between the reference RS and the target SRS. Here, the reference RS may be SSB, CSI-RS, or SRS corresponding to the L1 parameter'SRS-SpatialRelationInfo'. The usage is set for each SRS resource set.

-The terminal determines the Tx beam for the SRS resource to be transmitted based on the SRS-SpatialRelation Info included in the SRS-Config IE (S920). Here, SRS-SpatialRelation Info is set for each SRS resource, and indicates whether to apply the same beam as the beam used in SSB, CSI-RS or SRS for each SRS resource. In addition, SRS-SpatialRelationInfo may or may not be set for each SRS resource.

-If SRS-SpatialRelationInfo is set in the SRS resource, the same beam as the beam used in SSB, CSI-RS or SRS is applied and transmitted. However, if the SRS-SpatialRelationInfo is not set in the SRS resource, the UE randomly determines a Tx beam and transmits the SRS through the determined Tx beam (S930).

More specifically, for P-SRS with'SRS-ResourceConfigType' set to'periodic':

i) When SRS-SpatialRelationInfo is set to'SSB/PBCH', the UE applies the same spatial domain transmission filter (or generated from the filter) as the spatial domain Rx filter used for SSB/PBCH reception, and the corresponding SRS resource To transmit; or

ii) When SRS-SpatialRelationInfo is set to'CSI-RS', the UE transmits SRS resources by applying the same spatial domain transmission filter used for reception of periodic CSI-RS or SP CSI-RS; or

iii) When SRS-SpatialRelationInfo is set to'SRS', the UE transmits the SRS resource by applying the same spatial domain transmission filter used for transmission of periodic SRS.

Even when'SRS-ResourceConfigType' is set to'SP-SRS' or'AP-SRS', a beam determination and transmission operation may be applied similarly to the above.

-Additionally, the terminal may or may not receive feedback on the SRS from the base station as in the following three cases (S940).

i) When Spatial_Relation_Info is set for all SRS resources in the SRS resource set, the UE transmits the SRS through the beam indicated by the base station. For example, if Spatial_Relation_Info all indicate the same SSB, CRI, or SRI, the UE repeatedly transmits the SRS with the same beam. In this case, it corresponds to FIG. 8(a) for the purpose of the base station selecting the Rx beam.

ii) Spatial_Relation_Info may not be set for all SRS resources in the SRS resource set. In this case, the terminal can freely transmit while changing the SRS beam. That is, in this case, the UE sweeps the Tx beam and corresponds to FIG. 8(b).

iii) Spatial_Relation_Info can be set only for some SRS resources in the SRS resource set. In this case, for the configured SRS resource, the SRS is transmitted with the indicated beam, and for the SRS resource for which Spatial_Relation_Info is not configured, the terminal may arbitrarily apply and transmit a Tx beam.

In a next-generation wireless communication system (eg, an NR system), operations for determining an uplink transmission beam of a terminal may be supported. As an example, an operation of determining an uplink transmission beam of the terminal in the frequency range 1 (FR1) and/or frequency range 2 (FR2) regions in Table 2 described above may be considered.

For example, in order to determine a specific uplink transmission beam, association information (or association information) may be set as a value of a corresponding parameter by setting a higher layer parameter (eg, RRC parameter spatialRelationInfo). The association information is based on the identifier of the CSI-RS resource (eg, CSI-RS resource ID), the identifier of the SSB (eg, SSB ID, SSB index), and/or the identifier of the SRS resource (eg, SRS resource ID). Can be set. The terminal may determine a beam based on the association information, that is, determined (or identified) by the association information as an uplink transmission beam. As an example, association information based on the identifier of the CSI-RS resource and/or the identifier of the SSB is set when beam correspondence of the terminal is established, and the association information based on the identifier of the SRS resource is the beam of the terminal. It may be defined or limited as set when reciprocity is not fully supported.

In a next-generation wireless communication system, it is necessary to consider a method in which a base station sets (and/or indicates) an uplink transmission beam of a corresponding terminal by using a specific unit based on the implementation of the terminal. For example, it is necessary to consider a method in which the base station configures and/or indicates the uplink transmission beam of the corresponding terminal in units of a specific antenna group of the terminal. In addition, whether the base station receives a DL RS (eg, CSI-RS resource ID, SSB ID/index) corresponding to the above-described higher layer parameter (eg, RRC parameter spatialRelationInfo) value, based on a specific antenna group unit of the terminal, And/or a method of setting and/or controlling transmission of a UL RS (eg, SRS resource ID) corresponding to the higher layer parameter value may need to be considered.

In consideration of this point, in a next-generation wireless communication system, it is necessary to support a definition of a panel that can be an actual transmission unit or reception unit of a terminal, and a setting method related to the panel.

'Panel' referred to in this specification is'at least one panel' and'multiple panels' (having similarity and/or common values in terms of specific characteristics (eg, Timing Advance (TA), Power control parameter, etc.)) Or it can be interpreted/applied by transforming it into a'panel group'. In addition, the'panel' referred to in the present specification is'at least one antenna port' and'a plurality of antenna ports' (having similarity and/or a common value in terms of specific characteristics (eg, TA, Power control parameter, etc.)) ,'At least one uplink resource','a plurality of uplink resources','antenna port group','uplink resource group', or'uplink resource set' can be transformed into and interpreted/applied. . In addition, the'panel' referred to in this specification is'at least one beam','multiple beams','minimum' (having similarity and/or a common value in terms of specific characteristics (eg, TA, Power control parameter, etc.)) It can be interpreted/applied by transforming it into one beam group' or'at least one beam set'.

In addition, a'panel' referred to in this specification may be defined as a unit for a terminal to configure a transmission beam and/or a reception beam. For example, the'transmission panel' may generate a plurality of candidate transmission beams from one panel, but may be defined as a unit capable of using only one of them in transmission at a specific time point. As an example, only one transmission beam per transmission panel (eg, spatial relation information RS) may be used for transmission of a specific uplink signal and/or channel.

In addition, in the present invention, the'panel' refers to'at least one antenna port','a plurality of antenna ports','antenna port group','uplink resource group', or'uplink synchronization is common (or similar). It may refer to'uplink resource set'. In this case, the'panel' can be interpreted/applied by transforming it into a generalized expression of'Uplink Synchronization Unit (USU)'. In addition, in this specification,'panel' may be interpreted/applied by transforming it into a generalized expression of'Uplink Transmission Entity (UTE)'.

The'uplink resource (or resource group)' may be interpreted/applied by transforming it into a PUSCH/PUCCH/SRS/PRACH resource (or resource group, resource set). In addition, it goes without saying that the above-described modification analysis/application can also be applied in reverse.

In addition, in the present invention, the'antenna (or antenna port)' may represent a physical or logical antenna (or antenna port). In other words, the'panel' referred to in the present specification can be variously interpreted as a'group of terminal antenna elements','a group of terminal antenna ports', and'group of terminal logical antennas'. For example, whether any physical/logical antennas (or antenna ports) are grouped and mapped to a single panel is determined by considering the location/distance/correlation diagram between antennas, RF configuration, and/or antenna (port) virtualization method. Can be set in any way. This mapping process may vary depending on the terminal implementation. In addition, the'panel' referred to in the present specification may be interpreted/applied by transforming it into'a plurality of panels' or'panel group' (having similarity and/or common values in terms of specific characteristics).

When the panel as described above is considered, activation or deactivation of a panel unit may be considered based on a common understanding of whether a panel is used between a base station and a terminal. Through this, there is an effect that power control can be efficiently performed. In addition, since the base station can perform scheduling on a per-panel basis of the terminal, it is possible to obtain an effect of allowing the base station to control interference (eg, uplink interference, etc.) in a desired direction (or beam region) from a cell operation perspective.

The terminal may report the information related to the above-described panel to the base station in the form of UE capability. In addition, the terminal may transmit panel-related information to the base station through semi-static or dynamic reporting. The base station may receive panel-related information from the terminal, perform specific control signaling for each panel, and set and/or instruct the operation of the associated terminal.

For example, when four SRS resource sets set for beam management (BM) purposes (e.g., RRC parameter usage is set to'BeamManagement') are set to the terminal, each SRS resource set is assigned to each panel of the terminal. It may be set and/or defined to correspond to. As an example, when 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 So that SRS transmission can be performed.

As an example, the terminal as shown in Table 7 may be implemented.

Referring to Table 7, when the terminal reports (or transmits) the number of SRS resource sets that it can support to the base station (UE capability) of 7 or 8, the corresponding terminal is a maximum of 4 SRS resource sets (for BM) can be set. In this case, as an example, the terminal may be defined, configured, and/or instructed to perform uplink transmission by corresponding to each of the SRS resource sets (for BM use) to a panel (transmission panel and/or reception panel) of the terminal, respectively. . That is, the SRS resource set(s) for a specific purpose (eg, BM use) set for the terminal may be defined, set, and/or indicated to correspond to the panel of the terminal. As an example, when the base station configures and/or instructs the UE to (implicitly or explicitly) set and/or instruct the first SRS resource set in connection with uplink transmission (set for BM use), the UE and the first SRS resource set It may be recognized that the uplink transmission is performed using an associated (or corresponding) panel.

In addition, when a terminal supporting four panels, such as the terminal, transmits each panel in correspondence with an SRS resource set for one BM, information on the number of SRS resources that can be set per each SRS resource set Can be included in the capability information. Here, the number of SRS resources may correspond to the number of transmittable beams (eg, uplink beams) per each panel of the terminal. For example, a terminal in which four panels are implemented may be configured to perform uplink transmission by corresponding to two uplink beams for each panel to two configured SRS resources.

In the present specification, a method of performing a panel-based configuration and/or indication is proposed when a terminal performs uplink transmission, particularly when transmitting an uplink data channel (eg, PUSCH). That is, in the present specification, when a base station schedules PUSCH transmission of a terminal, a method of setting and/or indicating a panel and/or a beam for corresponding PUSCH transmission is proposed.

The PUSCH transmission/reception procedure in the next-generation wireless communication system may be as shown in FIG. 10.

10 shows an example of a PUSCH transmission/reception procedure to which the method proposed in the present specification can be applied. 10 is merely for convenience of description and does not limit the scope of the present specification.

Referring to FIG. 10, it is assumed that the base station and the terminal perform PUSCH transmission/reception on a panel basis and/or a beam basis.

The terminal may transmit (or report) terminal capability information to the base station (S1005). Here, the UE capability information may include information on UE capability related to PUSCH transmission of UE, information related to panel configuration of UE, information related to beam configuration of UE, and the like. For example, the corresponding terminal capability information may include information on the number of active panels of the terminal, information on the maximum number of panels available for one transmission, information on the number of beams constituting the panel of the terminal, etc. have.

The terminal may receive configuration information related to PUSCH transmission from the base station (S1010). In this case, the configuration information may be delivered through higher layer signaling (eg, RRC signaling, etc.). Here, the configuration information may include configuration information (eg, PUSCH configuration, etc.) for PUSCH transmission, configuration information related to a panel and/or a beam for PUSCH transmission.

The terminal may receive PUSCH scheduling information from the base station (S1015). In this case, the scheduling information may be transmitted through downlink control information (DCI) and/or MAC-CE. For example, the DCI is a DCI format identifier (Identifier for DCI formats), UL / SUL (Supplementary uplink) indicator (UL / SUL indicator), a bandwidth part indicator (Bandwidth part indicator), a frequency domain resource assignment (Frequency domain resource assignment ), time domain resource assignment, frequency hopping flag, modulation and coding scheme (MCS), SRS resource indicator (SRI), precoding information, and The number of layers (Precoding information and number of layers), antenna port(s) (Antenna port(s)), SRS request, DMRS sequence initialization, UL-SCH (Uplink Shared Channel) indicator ( UL-SCH indicator), and the like. In addition, SRS resources set in the SRS resource set associated with the upper layer parameter'usage' may be indicated by the SRI field included in the DCI. Also,'spatialRelationInfo' can be set for each SRS resource, and its value can be one of {CRI, SSB, SRI}.

The terminal may transmit a PUSCH to the base station based on the PUSCH transmission-related configuration information and the PUSCH scheduling information (S1020). In this case, the corresponding PUSCH may be transmitted in consideration of a panel unit and/or a beam unit.

In relation to the PUSCH transmission scheme in the next-generation wireless communication system, codebook based transmission (CB transmission) and non-codebook based transmission (NCB transmission) may be supported. . The UE may perform CB transmission when the higher layer parameter txConfig in PUSCH-Config is set to'codebook', and may perform NCB transmission when the txConfig is set to'nonCodebook'. If the txConfig is not configured, PUSCH transmission may be based on one PUSCH antenna port, which may be triggered by DCI format 0_0.

First, a codebook-based uplink transmission will be described in detail.

In the case of codebook-based transmission, the UE may determine a PUSCH transmission precoder based on an SRS Resource Indicator (SRI), a Transmit Precoding Matrix Indicator (TPMI), and a Transmit Rank Indicator (TRI). Here, SRI, TPMI, and TRI may be given by SRS resource indicator field information and Precoding information and number of layers information included in the DCI field. TPMI can be used to indicate a precoder to be applied through an antenna port {0 ... ν-1} corresponding to the SRS resource selected by SRI when multiple SRS resources are configured or one SRS resource is configured, Alternatively, TPMI may be used to indicate a precoder to be applied through an antenna port {0 ... ν-1} corresponding to the SRS resource.

The transmission precoder may be selected from an uplink codebook having a plurality of antenna ports equal to the upper layer parameter nrofSRS-Ports of SRS-Config. When the terminal is configured to have the upper layer parameter txConfig set to'codebook', the terminal may be configured with at least one SRS resource. The SRI indicated in slot n may be related to the most recent transmission of the SRS resource identified by the SRI, that is, the SRS resource prior to the PDCCH carrying the SRI prior to the slot n.

In addition, in the case of codebook-based transmission, the terminal may be configured with a single SRS resource set, and only one SRS resource within the SRS resource set may be indicated based on the SRI. The maximum number of SRS resources configured for codebook-based transmission may be 2. If aperiodic (AP)-SRS is set to the terminal, the SRS request field of the DCI may trigger transmission of the AP-SRS resource. In addition, when multiple SRS resources are configured, the UE configures the upper layer parameter nrofSRS-Ports of SRS-Config with the same value in all SRS resources, and the upper layer parameter resourceType of SRS-ResourceSet is for all SRS resources. You can expect to be set to the same value.

Next, non-codebook-based uplink transmission will be described in detail.

In the case of non-codebook-based transmission, the UE may determine its own PUSCH precoder and transmission rank based on the wideband SRI given by the SRI field from the DCI. The UE may use one or a plurality of SRS resources for SRS transmission, and the number of SRS resources that can be set for the UE for simultaneous transmission in the same RB may be UE capability. In addition, only one SRS port may be configured for each SRS resource. In addition, when the upper layer parameter usage of the SRS-Config is set to'nonCodebook', only one SRS resource set may be set. The maximum number of SRS resources that can be configured for non-codebook-based uplink transmission is 4. In addition, the SRI indicated in slot n may be related to the most recent transmission of the SRS resource identified by the SRI, that is, the SRS resource prior to the PDCCH carrying the SRI prior to the slot n.

In the case of non-codebook-based transmission, the UE may calculate a precoder to be used for transmission of the precoded SRS based on the measurement of the associated NZP CSI-RS resource. The UE can receive only one NZP CSI-RS resource for the SRS resource set. In addition, in the case of non-codebook-based transmission, the terminal does not expect that both the associatedCSI-RS in the SRS-Config for the SRS resource set and the spatialRelationInfo for the SRS resource are configured. In addition, in the case of non-codebook-based transmission, when at least one SRS resource is configured, the terminal may be scheduled according to DCI format 0_1.

In this specification, a method of setting and/or indicating a panel and/or a beam unit in relation to PUSCH transmission/reception between a base station and a terminal is proposed. For example, the methods and/or examples described herein below may correspond to specific methods and/or examples of each step in FIG. 10 described above. In addition, the methods and/or examples described below are only classified for convenience of description, and may be applied independently or may be applied through combination with each other.

The embodiments described in the present specification are only classified for convenience of description, and of course, some configurations and/or methods of one embodiment may be substituted with or combined with the configurations and/or methods of other embodiments. .

(Example 1)

Hereinafter, setting of a panel and/or beam unit applicable to the above-described codebook-based (CB based) UL transmission and/or non-codebook-based (NCB-based) UL transmission and/or Look at how to direct. For example, in the case of codebook-based UL transmission and/or non-codebook-based UL transmission as described above, a single SRS resource set or multiple SRS resource sets may be set for the corresponding purpose.

The SRS resource set for codebook-based UL transmission and/or non-codebook-based UL transmission and the above-described SRS resource set for BM may be independently set without a certain connection relationship. Here, since the SRS resource set for BM use may correspond to the panel of the terminal as mentioned above, the connection relationship is SRS resource set for the use of codebook-based UL transmission and/or non-codebook-based UL transmission. It may also mean a connection relationship between the set and the panel of the terminal. In the case of independent configuration as described above, when a UE supporting four panels performs PUSCH transmission, even if the PUSCH transmission is performed (or implemented) from a specific single panel, the base station can transmit the PUSCH from any terminal panel. I don't know. As an example, when two SRS resources are set in a single SRS resource set set for codebook-based UL transmission, the UE transmits the first SRS resource and the second SRS resource to any of the four panels. Whether to perform by mapping may be an implementation matter of the terminal.

In consideration of this point, in the present specification, in relation to the SRS resource set(s) of the terminal according to the SRS resource set(s) setting for a specific BM use described above and the SRS resource(s) in each SRS resource set, the codebook-based and / Or a method of setting (and/or indicating) a correlation (and/or linkage) between SRS resource set(s) for non-codebook-based PUSCH transmission and SRS resource(s) in each SRS resource set As an example, the association relationship may be set through separate higher layer signaling, etc., or may be based on a predefined (or predetermined, preset) rule or mechanism. Transmission) Panel-specific UL transmission can be set (or indicated, scheduled).

In the following description, the number of SRS resource sets set for codebook-based UL transmission and/or non-codebook-based UL transmission may be two or more, and for convenience of description, two SRS resource sets are codebook-based UL transmission and/or Or, it is assumed that it is set for non-codebook-based UL transmission. The two SRS resource sets are referred to as a first SRS resource set (SRS resource set 1) and a second SRS resource set (SRS resource set 2), respectively.

( PUSCH transmission/reception method based on a panel unit and/or a beam unit )

Signaling related to linkage between the SRS resource set(s) set for codebook-based UL transmission and/or non-codebook-based UL transmission use and the SRS resource set(s) set for BM use is to be set, defined, or indicated I can. Here, the SRS resource set(s) set for the BM use may correspond to the panel(s) of the terminal as described above. In other words, the base station may set or instruct the terminal through signaling information indicating a connection relationship between the panel of the terminal and the SRS resource set(s) related to PUSCH transmission.

For example, a method of delivering the connection-related information through higher layer signaling (eg, RRC signaling) and/or medium access control-control element (MAC-CE)-based signaling may be considered. have. The method may be related to step S1010 and/or step S1015 in FIG. 10. In a state in which a set of candidate linkage configurations related to the connection is previously set through higher layer signaling, a certain candidate linkage configuration is activated or deactivated through MAC-CE-based signaling. ) Can be considered a semi-dynamic control method such as. In addition, a method of directly providing or updating the connection-related configuration through MAC-CE-based signaling itself may be considered.

Specifically, the first SRS resource set for codebook-based UL transmission and/or non-codebook-based UL transmission is associated with the SRS resource set A for BM (eg, panel A among the panels of the terminal), and the second SRS resource The set may be associated with the SRS resource set C (eg, panel C among panels of the terminal) for BM use. That is, a panel of a terminal related to codebook-based UL transmission and/or non-codebook-based UL transmission may be configured and/or indicated through higher layer signaling and/or MAC-CE-based signaling as described above. In this case, the connection relationship itself may be updated, activated, deactivated, or indicated by MAC-CE-based signaling and/or dynamic signaling (eg, DCI).

For example, when scheduling a PUSCH of codebook-based UL transmission and/or non-codebook-based UL transmission, a specific field of DCI (eg, DCI format 0_1, etc.) for the corresponding scheduling (ie, a specific field in the UL-related DCI ( S)), the indication information related to the first SRS resource set and/or the second SRS resource set may be transmitted. The method may be related to step S1010 and/or step S1015 in FIG. 10. For example, the indication information may be indicated by a UL Transmission Configuration Indicator (TCI) field in the DCI. Alternatively, in the case of PUSCH transmission based on a configured grant (configured grnat), the indication information may be configured through a higher layer parameter. In addition, in relation to the SRS resource set indicated by the indication information, the base station instructs the local SRS resource(s) indicator to the terminal together, so that the terminal can determine (or select) the final SRI(s). have.

In addition, even when only a single SRI field exists in the DCI, each state and/or codepoint in the specific field may be used for setting and/or indicating the above-described connection relationship. As an example, the state and/or the code point may be preset based on higher layer signaling (and/or MAC-CE-based signaling), and through MAC-CE-based signaling (pre-set parameter/value set Within) can be updated, activated, or deactivated.

In this way, in relation to the PUSCH transmission, the base station indicates an indication of a panel unit of the terminal (eg, an indication of an SRS resource set unit) and/or an indication of a beam unit of the panel (eg, SRI(s) in the indicated SRS resource set. )) can be performed on the terminal. In other words, the terminal may perform PUSCH transmission in a panel unit and/or a beam unit based on the indication as in the above example.

The above-described proposed method is set to be applicable when the time-domain behavior of the SRS is aperiodic, semi-persistent, and/or periodic (or defined, Instructions). In other words, it may be set and/or defined to support the above-described proposed scheme for at least one of the three types of operations in the time domain.

When the PUSCH transmission/reception method based on the setting and/or indication of the SRS resource set unit is generalized, it may be as follows.

For example, SRS resources for PUSCH transmission through i) specific SRI field(s) in a specific UL DCI or ii) specific fields related to panel and/or beam indication (eg, may be referred to as UL TCI field, etc.) Assume that the connection relationship between the set and the SRS resource set for BM (eg, a unit corresponding to the panel of the terminal) is established (or indicated) through RRC signaling and/or MAC-CE and/or DCI. In this case, a method in which individual or local indicators (e.g., SRI, UL RCI state, etc.)(s) in the field allow dynamic selection only for individual or local indicators in the SRS resource set(s) for the connected BM Can be considered. For example, a value indicated by the corresponding field may be set or defined to be related to the SRS resource set(s) for pre-connected BM use. Of course, in the case of PUSCH transmission based on a configured grant, the scheme may be applied based on higher layer parameters related to the configured grant, not the UL DCI.

Regarding the above scheme, in the assumed implementation situation of the terminal (eg, a terminal supporting four panels), a specific panel is mapped to each SRS resource set for each BM, and a plurality of UL beams in the corresponding panel are respectively corresponding. An operation of transmitting or sweeping by applying to individual or local SRS resources in the SRS resource set may be considered. In this case, when scheduling PUSCH, the panel(s) that are candidates for PUSCH scheduling because the quality of SRSs transmitted from specific two panels among panels supported by the terminal (eg, four panels) is relatively better. A method of linkage may be considered. To this end, a configuration (and/or indication) operation in which only the SRS resource sets for the two specific BM uses are connected with a specific field in the corresponding UL DCI may be applied.

In the case where the two down-selected or linked SRS resource sets are SRS resource set A and SRS resource set C as described above, the corresponding field of the UL DCI (i.e., panel/beam related Scheduling field) can be configured to enable dynamic selection only for individual or local beams within the SRS resource set A and the SRS resource set C. Through this, it is possible to obtain an effect of enabling dynamic beam selection within an indicated (or selected) panel while reducing overhead in terms of DCI bit-width. In addition, information such as the connected (or associated) SRS resource set A and SRS resource set C may be designed to be updated, activated, or deactivated through higher layer signaling and/or MAC-CE-based signaling, and the corresponding method Since the operation related to panel selection based on is excluded from the DCI overhead, an effect of reducing the control channel overhead can be obtained.

If the PUSCH transmission/reception method based on the setting and/or indication of the SRS resource set unit is more generalized, it may be as follows.

For example, SRS resources for PUSCH transmission through i) specific SRI field(s) in a specific UL DCI or ii) specific fields related to panel and/or beam indication (eg, may be referred to as UL TCI field, etc.) Assume that the connection relationship between the set and the SRS resource set for BM (eg, a unit corresponding to the panel of the terminal) is established (or indicated) through RRC signaling and/or MAC-CE and/or DCI. In this case, the individual or local indicator (e.g., SRI, UL RCI state, etc.)(s) in the field is a (higher) reference signal (RS) for the connected BM (ie, related to the BM) and/or A method of enabling dynamic selection only for individual or local reference signal identifiers (RS ID) and/or channel identifiers within the set(s) of channels may be considered. Here, the set(s) of the (higher) reference signal (RS) for BM use and/or the set(s) of channels are similar to the SRS resource set(s) for BM use in the terminal panel. It can be defined or set to correspond.

For example, the terminal may apply the indicated panel and/or beam to PUSCH transmission. If a DL signal and/or channel is connected (or indicated) as a reference for the PUSCH transmission, the UL transmission beam corresponding to the corresponding DL reception beam (or reciprocal) is configured to apply to PUSCH transmission and/or Can be defined.

The set(s) of reference signals and/or the set(s) of channels (for BM use) may be related to an indication of a panel unit and/or a beam unit of the terminal, and specifically, at least one of the following examples It can be defined, set or dictated, including one. In the following examples, a group may be replaced by a set, and one or more examples may be combined and applied.

As an example, the set(s) of the reference signal and/or the set(s) of channels may include a specific group of CSI-RS resource(s) and/or CSI-RS resource set(s). . In other words, the set(s) of the reference signal may include a unit (eg, CSI-RS resource setting) in which specific CSI-RS resource(s) are grouped. And/or, the specific group may be configured to be limited only to CSI-RS resource(s) for a TRS (Tracking Reference Signal) for which a higher spatial QCL reference is set. And/or, when the CSI-RS resource(s) for DL CSI acquisition use are configured in the specific group, it may be limited only to the case including the spatial QCL reference RS(s).

As another example, the set(s) of reference signals and/or the set(s) of channels may include a specific group consisting of a synchronization signal block (SSB) (identifier, ID)(s). In this case, all SSBs that may be included in the specific group may be limited or allowed to be SSBs set for BM use. Here, the SSB set for BM use may mean an SSB set in at least one resource setting for DL reporting related to BM.

As another example, the reference signal set(s) and/or the channel set(s) may include a specific group consisting of a control resource set (CORESET) (identifier, ID)(s). For example, the control resource set may be limited or allowed only to be connected to at least one specific search space setting. And/or, the identifier(s) of the search space setting may be directly the set(s) of the reference signal and/or the set(s) of channels. The individual control resource set and information of the associated panel and/or beam may be set, applied, and/or indicated in association with the identifier(s) of the search space setting.

As another example, the set(s) of the reference signal and/or the set(s) of channels may include a specific group consisting of PUCCH resource (identifier, ID)(s). As an example, it is set (or associated, indicated) to each specific PUCCH resource ID(s), and the UE is based on a codebook-based and/or non-codebook-based configuration including beam information applied to the corresponding PUCCH resource ID(s) It may be configured to perform PUSCH transmission. And/or, a predetermined (or defined) specific PUCCH resource ID(s) is set (or connected, indicated) in a grouped specific set unit, and the terminal includes beam information applied to the corresponding PUCCH resource ID(s) It may be configured to perform codebook-based and/or non-codebook-based PUSCH transmission based on configuration. And/or, as a default setting, an operation in which a predetermined PUCCH resource (eg, a PUCCH resource corresponding to the lowest or highest index) is connected to codebook-based and/or non-codebook-based PUSCH transmission is set or It can also be defined. Here, the default setting is when there is no reference signal set(s) and/or channel set(s) associated with codebook-based and/or non-codebook-based PUSCH transmission, a specific (ambiguous) period during the update process It can be applied when set.

Based on the above-described schemes (DL and/or UL related) reference signal set(s) and/or channel set(s) are connected (or set, indicated) to codebook-based and/or non-codebook-based PUSCH transmission In this case, the terminal may be configured to perform the PUSCH transmission through a panel corresponding to the panel applied to the previous reception and/or the panel applied to the previous transmission. Hereinafter, the corresponding scheme is described based on the DL-related reference signal set(s) and/or the channel set(s), but this is for convenience only, and the scheme described below is the UL-related reference signal set(s) and It goes without saying that / or the case of the channel set (s) can also be extended and applied.

For example, as in the above examples, when the DL-related reference signal set(s) and/or channel set(s) are connected (or set, indicated) for the PUSCH transmission, the specific information applied when the terminal receives Defined (or configured) to perform selective UL transmission in units of panels and/or beams during subsequent PUSCH scheduling through the (transmission) panel of the corresponding (i.e., mutually beneficial) terminal based on the (reception) panel of the terminal, Instructions).

Based on the (reception) panel, the (transmission) panel of the terminal corresponding thereto, when the terminal implements a specific DL reception panel (at a specific predetermined or preset level), beam correspondence (and/or panel) Correspondence) may refer to a panel for UL transmission that is linked (or implemented) to perform the transmission. As an example, the terminal may be implemented in the form of a specific transmission/reception panel that performs DL reception and UL transmission with a specific same panel.

In addition, when the DL-related reference signal set(s) and/or channel set(s) are connected (or set up, indicated) for the PUSCH transmission, the UE transmits the indicated DL-related reference signal during power control. It can be defined (or set, indicated) to apply to the pathloss compensation operation. For example, the path compensation operation may be included in an open-loop power control process related to PUSCH transmission.

And/or, it may be defined (or set, instructed) to apply a DL-related reference signal associated with the indicated DL channel (eg, specific CORESET(s), etc.) to a path compensation operation during power control. Here, the DL-related reference signal may be a reference signal used for reception of a corresponding DL channel, and for example, may include a DMRS (or QCL) for CORESET(s). In addition, the path compensation operation may be included in an open-loop power control process related to PUSCH transmission.

And/or, a structure indicating SRI by DCI is maintained, and the DL-related reference signal set(s) and/or channel set(s) are codebook-based and/or non-codebook-based SRS resources for uplink transmission. A method of establishing (and/or indicating) a (additional) connection (or association) relationship at the aggregation level may be considered. For example, the connection (or association) relationship may be configured and/or indicated through higher layer signaling (eg, RRC signaling) and/or MAC-CE-based signaling. In this case, the operation of performing uplink transmission using the (corresponding) beam and/or panel applied to the reception of the corresponding reference signal set(s) and/or channel set(s) is defined (or set, indicated) Can be.

For example, using the (corresponding) beam and/or panel applied to reception of the DL reference signal set(s) and/or channel set(s) based on the setting and/or indication of the above-described method The UE may transmit a PUSCH and/or SRS based on the associated SRS resource set(s) (internal SRS resource(s)). As an example, when a first SRS resource set and a second SRS resource set are configured for codebook-based PUSCH transmission and/or non-codebook-based PUSCH transmission, the first SRS resource set is SSB #3 (ie, index/ID # SSB corresponding to 3) is associated (or connected), and the second SRS resource set may be set and/or indicated to be associated with SSB #7 (ie, SSB corresponding to index/ID #7). As another example, when the first SRS resource set and the second SRS resource set are set for SRS transmission, the first SRS resource set is associated with SSB #3, and the second SRS resource set is set to be associated with SSB #7. And/or may be indicated.

When the connection (or interworking relationship) as in the above example is established and/or indicated, the terminal uses the (transmission) panel corresponding to the (optimal, preferred) (receive) panel applied when receiving SSB #3. Accordingly, the PUSCH and/or SRS may be transmitted through the SRS resource(s) set in the first SRS resource set. Here, the reception panel and/or the transmission panel of the terminal may be one and the same transmission/reception panel.

In addition, spatial relation information (eg, RRC parameter spatial relation info, etc.) may be set as each of the SRS resource(s) in the indicated SRS resource set at their own resource-level. As an example, when an independent CSI-RS resource indicator (CRI) is set for each SRS resource, the terminal corresponds to the CRI reception when transmitting the PUSCH and/or SRS through each corresponding SRS resource (ie, reciprocal) It may be configured to perform transmission using an uplink beam. Here, a separate (or additional) linkage of SSB #3 is assigned for each SRS resource set, so that the terminal CSI-RS for the SRI within the (transmission) panel of the terminal corresponding to the SRS resource set It may be configured (and/or instructed) to determine a (optimal, preferred) beam for reception, and to perform PUSCH and/or SRS transmission with a transmission beam corresponding to the determined beam.

The above-described example can be applied by replacing the first SRS resource set with the second SRS resource set, and replacing SSB #3 with SSB #7, and will be extended to examples related to multiple SRS resource sets as well as two cases. Of course you can.

That is, the connection (or association) relationship of the SRS resource set level as described above may be interpreted as a panel selection (and/or panel association) of the terminal. In addition, the connection (or association) relationship of the SRS resource level within the SRS resource set is determined by beam selection (and/or beam association) within the selected (and/or associated) panel. )).

And/or, a beam selection (and/or beam association) relationship may be established not only at the SRS resource set level described above, but also at the SRS resource level. As an example, when a first SRS resource set and a second SRS resource set are set for codebook-based PUSCH transmission, non-codebook-based PUSCH transmission, and/or SRS transmission, the first SRS resource set is associated with SSB# 3 and The 2 SRS resource set may be set and/or indicated to be associated with SSB #7. In this case, SRS resource #4 in the first SRS resource set may be associated with CRI #11, and SRS resource #5 in the first SRS resource set may be set and/or indicated to be associated with CRI #12. In addition, SRS resource #8 in the second SRS resource set may be associated with CRI #11, and SRS resource #9 in the first SRS resource set may be set and/or indicated to be associated with CRI #14. The UE may transmit a codebook-based PUSCH, a non-codebook-based PUSCH, and/or an SRS using the associated SRS resource set(s) and the associated SRS resource(s).

As in the above example, CRI #11 is commonly set in a specific SRS resource (eg, SRS resource #4) in the first SRS resource set and a specific SRS resource (eg, SRS resource #8) in the second SRS resource set. It may be set in duplicate. In addition, there is a separate UE capability for whether to allow or not related to the redundancy configuration, and a procedure in which the UE reports the UE capability information to the BS may be applied. Through this, the above-described association method may be applied depending on whether the redundant configuration is allowed and/or whether the terminal is implemented.

For example, if the redundant configuration is allowed, the terminal may receive a CSI-RS resource corresponding to CRI #11 by a transmission/reception module (eg, a transmission/reception panel) of the terminal corresponding to the first SRS resource set, and the terminal May transmit a codebook-based PUSCH, a non-codebook-based PUSCH, and/or an SRS in SRS resource #4 using a transmission beam corresponding to a reception beam of a CSI-RS resource in the transmission/reception module. In addition, the UE may receive a CSI-RS resource corresponding to CRI #11 through a transmission/reception module (eg, a transmission/reception panel) of a terminal corresponding to the second SRS resource set, and the terminal may receive a CSI-RS resource in the transmission/reception module. Codebook-based PUSCH, non-codebook-based PUSCH, and/or SRS may be transmitted in SRS resource #8 using a transmission beam corresponding to a reception beam of a resource. For example, the transmission/reception module may be determined by SSB #3 reception and SSB #7 reception, respectively. In addition, the CSI-RS resource corresponding to the CRI #11 may mean a specific beam among beams of the base station. That is, the corresponding CSI-RS resource may be based on the same transmission beam of the base station.

When the base station schedules UL transmission of the terminal, if the SRS resource #4 and the SRS resource 8 are indicated at the same time, the base station transmits the UL transmission to the base station reception beam corresponding to the transmission beam of CRI #11 when receiving the corresponding UL transmission. You can get the effect that can be received effectively. That is, a plurality of panel(s) and/or a plurality of beam(s) of the terminal may be set to correspond to (or reciprocally) a single panel and/or a single beam of the base station.

In addition, in order to support the above-described proposed operations, the source RS of the spatial QCL (eg, QCL type D) set and/or indicated for the CSI-RS resource corresponding to the illustrated CRI #11 is (SSB# It can be set to be 3 and/or SSB#7} (eg, integration of SSB #3 and SSB #7 from a beam area perspective). In addition, when CRI #11 is an aperiodic CSI-RS type, the source RS of the spatial QCL followed by the CRI #11 at each transmission time by an individual trigger based on DCI is SSB #3 or SSB # A manner in which the base station changes and/or indicates (optionally) to be 7 may also be considered. In this case, the change and/or indication may be dynamic or semi-dynamic.

In addition, in the present specification, in relation to scheduling (ie, UL scheduling) for codebook-based PUSCH transmission and/or non-codebook-based PUSCH transmission, the above-described proposal in consideration of time domain behavior(s) The method of applying the method can also be considered.

For example, in the above, a method of dynamically indicating a local resource identifier (eg, local SRS resource ID) using UL DCI (eg, DCI format 0_1) has been described. In addition, when a plurality of SRS resource sets in which the usage of the SRS resource is set for codebook-based uplink transmission and/or non-codebook-based uplink transmission are set, operation of the plurality of SRS resource sets in the time domain In consideration of, a method of performing a panel unit and/or a beam unit indication may be considered. A code point of a specific field (e.g., SRI field, UL TCI state field, etc.) in the UL DCI over the SRS resource set(s) set for an operation in a specific same time domain among the plurality of SRS resource sets ( S) (eg, SRI state, UL TCI state) may be mapped, and a method of setting and/or indicating dynamic panel selection using the code point(s) may be applied. This is because SRS resources in the plurality of SRS resource sets may be mixed and set in code point(s) in a specific field of the UL DCI.

As an example, in this regard, information related to whether the base station applies the corresponding scheme to an operation in a certain time domain is based on higher layer signaling (eg, RRC signaling) and/or MAC-CE signaling. -selection), can be set (or defined) to activate, deactivate, update, change, and/or switch. For example, in this regard, the mapping of the code point(s) may be performed by combinatorial mapping. That is, a specific field in the UL DCI may be configured and/or defined according to a rule that mechanically performs mechanical code point mapping of the SRS resource(s) in the corresponding SRS resource set in sequence.

When the scheme in the above example is applied, the power control operation for codebook-based PUSCH transmission and/or non-codebook-based PUSCH transmission is performed at a specific code point (e.g., SRI, UL TCI) of a specific field of the UL DCI. state) may be set to follow a power control scheme corresponding to the SRS resource set to which it belongs. As an example, power for codebook-based PUSCH transmission and/or non-codebook-based PUSCH transmission may be controlled by applying a power control-related parameter set in a corresponding SRS resource set. In addition, interlocked power control may be performed based on a specific offset (eg, an offset value related to power control).

In addition, unlike the above-described method, when two or more time domain operations can be configured together, when two or more SRS resources are indicated together when performing PUSCH scheduling, only SRS resources following the operation on the same time domain may be indicated. It can be defined or set as being present. Alternatively, the UE can expect to receive only SRS resources that follow the operation in the same time domain. Here, when two or more SRS resources are indicated together may mean simultaneous UL transmission based on multiple beams and/or multiple panels.

In addition, in at least one of the proposed methods described above in this specification, without setting (separately or exclusively) SRS resource set(s) for codebook-based and/or non-codebook-based PUSCH transmission purposes, other uses (e.g. : Specific connection (or association) related signaling to be applied together for codebook-based and/or non-codebook-based PUSCH transmission of the SRS resource set(s) set for BM use, antenna switching purpose, etc.)may be defined or configured have. In this case, the SRS resource set(s) for other purposes only by the signaling without the process of setting the SRS resource set(s) for PUSCH transmission based on the codebook and/or the non-codebook based on the codebook and/or the non-codebook It is possible to obtain an effect that can be used for PUSCH transmission purposes. Through this, it is possible to reduce the latency required until the final PUSCH scheduling, and there is an effect that the overhead related to SRS resource configuration can also be reduced.

This scheme can be applied in consideration of the number of ports of SRS resources related to the corresponding SRS resource set, and implementation of a terminal related to antenna switching (eg, nT/mR implementation, etc.). That is, when the implementation situation of the terminal (ie, capability information of the terminal, etc.) is met, the method may be selectively applied.

In addition, in relation to the scheme proposed in the present specification described above, in the case of non-codebook-based PUSCH transmission, the terminal may report its capability information to the base station indicating that simultaneous uplink transmission based on a plurality of terminal panels is impossible. have. For example, even if two or more of the panels supported by the terminal are activated for PUSCH transmission, information indicating that only one panel is available for actual transmission may be included in the form of capability information of the terminal. In the following description, the capability information of the UE is described based on non-codebook-based PUSCH transmission, but may be extended and applied to other uplink transmissions (eg, codebook-based PUSCH, PUCCH, SRS, PRACH, etc.).

When two or more SRS resources exist during scheduling of uplink transmission (eg, PUSCH transmission), all of the corresponding SRS resources may be limited to be configured only to those corresponding to SRS resource identifiers belonging to the same specific SRS resource set. That is, the terminal may expect that the SRS resources are all SRS resources belonging to the same (specific) SRS resource set. Here, the two or more SRS resources may be indicated by a specific field (eg, SRI field) in DCI.

For example, the terminal reports the terminal capability information to the base station that simultaneous transmission based on a plurality of panels is not possible as described above to the base station, and the first SRS resource set and the second SRS resource for non-codebook-based PUSCH transmission Set can be set. Here, the terminal capability information may include information (eg, 2, 4) on the maximum number of layers that the terminal can support for non-codebook-based PUSCH transmission. In addition, the first SRS resource set is composed of SRS resource #1, SRS resource #2, SRS resource #3, and SRS resource #4, and the second SRS resource set is SRS resource #5, SRS resource #6, It may be composed of SRS resource #7, and SRS resource #8. In addition, the terminal capability information may include information on the maximum number of layers that the terminal can support for non-codebook-based PUSCH transmission.

When the terminal reports the maximum number of layers as 2, the terminal effectively recognizes an operation in which up to two SRS resources are scheduled within the first SRS resource set or up to two SRS resources are scheduled within the second SRS resource set. (Or, expect). However, the corresponding terminal may not expect a scheduling indication that applies one SRS resource in the first SRS resource set and one SRS resource in the second SRS resource set to PUSCH transmission together. This is because the UE violates its capability information reported to the base station.

Similarly, when the terminal reports to the base station that simultaneous uplink transmission based on different panels (ie, based on different SRS resource sets) is possible, the corresponding terminal is the maximum layer supported for non-codebook-based PUSCH transmission. In addition to information on the number, information on the maximum number of layers that can be supported for each panel may be additionally (or independently) reported to the base station.

For example, consider a case in which the terminal reports the maximum number of layers that can be supported for non-codebook-based PUSCH transmission as 4 and the maximum number of layers that can be supported for each panel is reported as 2. The UE may schedule up to two SRS resources in the first SRS resource set, or up to two SRS resources in the second SRS resource set, or up to two SRS resources and a second in the first SRS resource set. It is possible to effectively recognize (or expect) an operation in which up to two SRS resources are simultaneously scheduled in the SRS resource set. However, the terminal may not expect other scheduling instructions. This is because the UE violates its capability information reported to the base station.

Also, similarly, when the UE reports to the base station that simultaneous uplink transmission based on different panels (ie, based on different SRS resource sets) is possible, the UE can support non-codebook based PUSCH transmission. In addition to information on the maximum number of layers, information on the maximum number of layers that can be supported by each panel is additionally (or independently) as additional capability information limited to the case (or situation) that simultaneous PUSCH transmission through two or more panels is scheduled. ) You can also report to the base station.

For example, the terminal reports the maximum number of layers that can be supported for non-codebook-based PUSCH transmission as 4, and supports each panel only when simultaneous PUSCH transmission through two or more panels is scheduled (or situation). Consider the case where the maximum number of layers is reported as 2. The UE is configured with up to 4 SRS resources scheduled within the first SRS resource set, or up to 4 SRS resources scheduled within the second SRS resource set, or up to 2 SRS resources and 2nd SRS resources in the first SRS resource set. It is possible to effectively recognize (or expect) an operation in which up to two SRS resources are simultaneously scheduled in the SRS resource set. However, the UE may not expect a scheduling instruction for applying one SRS resource in the first SRS resource set and three SRS resources in the second SRS resource set to PUSCH transmission together. This is because the UE violates its capability information reported to the base station.

In addition, in the methods and/or operations proposed in the present specification, indication information related to scheduling of codebook-based PUSCH transmission and non-codebook-based PUSCH transmission is a specific field (or state) in the DCI for the corresponding scheduling. It may be set and/or indicated by On the other hand, when the corresponding PUSCH transmission is based on a configured grant, the indication information may be configured and/or indicated through higher layer parameters (eg, RRC signaling and/or MAC-CE signaling, etc.). .

When the methods and/or operations proposed in this specification are applied, in relation to the operation of the UE performing codebook-based PUSCH transmission, non-codebook-based PUSCH transmission, and/or SRS transmission, the base station is / Or it is possible to obtain an effect of controlling uplink transmission in a specific beam unit. Through this, panel and/or beam-selective PUSCH scheduling that accompanies enhanced power control on a panel and/or beam basis may be performed.

FIG. 11 shows an example of a flowchart of an operation of a terminal performing uplink data channel (eg, PUSCH) transmission based on scheduling in a panel unit and/or a beam unit to which the method proposed in this specification can be applied. 11 is merely for convenience of description and does not limit the scope of the present specification.

Referring to FIG. 11, in relation to the transmission of the uplink data channel, the UE and the base station can operate using the PUSCH transmission method based on the setting (and/or indication) of the panel unit and/or the beam unit described above in this specification. I can.

The terminal may receive configuration information related to an uplink data channel (S1105). For example, the configuration information may include resource configuration information related to PUSCH transmission, configuration information on a panel and/or a beam, and the like, as described above. As an example, the configuration information is at least one of a transmission unit related to transmission of the uplink data channel (eg, the aforementioned panel, SRS resource set set for BM use, etc.) or a beam (eg, SRS resource set for BM use). It may include one or more settings (eg, UL TCI states) including.

For example, the operation in which the terminal (eg, 1510 and/or 1520 of FIGS. 15 to 19) receives the setting information in step S1105 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the configuration information, and one or more transceivers 106 may receive the configuration information. I can.

The terminal may receive control information for scheduling transmission of an uplink data channel (eg, the aforementioned DCI, DCI format 0_1, MAC-CE, etc.). For example, based on the one or more settings, the control information may include information indicating a transmission unit and a beam to be applied to transmission of the uplink data channel. For example, as described above, the control information may include information indicating a panel and/or a beam to be applied to the PUSCH transmission. As an example, a specific field included in the control information (eg, UL TCI state field) is information indicating a panel related to the PUSCH transmission (eg, a panel indicator, a specific SRS resource set,) and/or information indicating a beam ( Example: It may be used to indicate resource or identification information of UL RS (or channel), resource or identification information of DL RS (or channel), etc.).

For example, the operation in which the terminal (eg, 1510 and/or 1520 of FIGS. 15 to 19) receives the control information in step S1110 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the control information, and one or more transceivers 106 may receive the control information. I can.

The terminal may transmit the uplink data channel based on the control information (and/or the configuration information) (S1115).

For example, the operation of the UE (eg, 1510 and/or 1520 of FIGS. 15 to 19) transmitting the uplink data channel in step S1115 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. I can. For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the uplink data channel, and one or more transceivers 106 may control the uplink data channel. Channel can be transmitted.

12 shows an example of a flowchart of an operation of a base station that receives an uplink data channel (eg, PUSCH) based on scheduling in a panel unit and/or a beam unit to which the method proposed in this specification can be applied. 12 is merely for convenience of description and does not limit the scope of the present specification.

Referring to FIG. 12, in relation to the reception of the uplink data channel, the terminal and the base station may operate using the PUSCH reception method based on the setting (and/or indication) of the panel unit and/or the beam unit described above in this specification. I can.

The base station may transmit configuration information related to an uplink data channel (S1205). For example, the configuration information may include resource configuration information related to PUSCH transmission, configuration information on a panel and/or a beam, and the like, as described above. As an example, the configuration information is at least one of a transmission unit related to transmission of the uplink data channel (eg, the aforementioned panel, SRS resource set set for BM use, etc.) or a beam (eg, SRS resource set for BM use). It may include one or more settings (eg, UL TCI states) including.

For example, the operation of the base station (eg, 1510 and/or 1520 of FIGS. 15 to 19) transmitting the setting information in step S1205 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the configuration information, and one or more transceivers 106 may transmit the configuration information. have.

The base station may transmit control information (eg, DCI, DCI format 0_1, MAC-CE, etc.) for scheduling transmission of an uplink data channel (S1210). For example, based on the one or more settings, the control information may include information indicating a transmission unit and a beam to be applied to transmission of the uplink data channel. For example, as described above, the control information may include information indicating a panel and/or a beam to be applied to the PUSCH transmission. As an example, a specific field included in the control information (eg, UL TCI state field) is information indicating a panel related to the PUSCH transmission (eg, a panel indicator, a specific SRS resource set,) and/or information indicating a beam ( Example: It may be used to indicate resource or identification information of UL RS (or channel), resource or identification information of DL RS (or channel), etc.).

For example, the operation of the base station (eg, 1510 and/or 1520 of FIGS. 15 to 19) transmitting the control information in step S1210 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the control information, and one or more transceivers 106 may transmit the control information. have.

The base station may receive the uplink data channel transmitted based on the control information (and/or the setting information) (S1115). As an example, the base station may receive the uplink data channel using its own reception beam corresponding to a transmission beam of a terminal configured and/or indicated based on the control information (and/or the configuration information).

For example, the operation of the base station (eg, 1510 and/or 1520 of FIGS. 15 to 19) receiving the uplink data channel in step S1215 described above may be implemented by the apparatus of FIGS. 15 to 19 described below. I can. For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the uplink data channel, and one or more transceivers 106 may control the uplink data channel. Can receive channels.

In addition, with respect to the steps of FIGS. 11 and 12 described above, the following examples may be additionally applied.

For example, a transmission unit to be applied to transmission of the uplink data channel may be based on a set set of one or more uplink reference signals. In addition, a beam to be applied to transmission of the uplink data channel may be based on any one of the one or more uplink reference signals. That is, the beam may be a component included in the transmission unit. In other words, the beam to be applied when the terminal transmits the uplink data channel may be one of beams constituting a panel configured (or indicated) for transmission of the corresponding uplink data channel. For example, as described above, the set may include a set of sounding reference signal resources, and the like, and the set of sounding reference signal resources may be used for beam management usage. Can be set.

For example, a transmission unit to be applied to transmission of the uplink data channel may be based on a set configured with one or more downlink reference signals. In addition, a beam to be applied to transmission of the uplink data channel may be based on any one of the one or more downlink reference signals. That is, the beam may be a component included in the transmission unit. In other words, the beam to be applied when the terminal transmits the uplink data channel may be one of beams constituting a panel configured (or indicated) for transmission of the corresponding uplink data channel. For example, as described above, the set may include a set of Channel State Information-Reference Signal (CSI-RS) resources and/or a set of synchronization signal block identifiers.

For example, the terminal may transmit terminal capability information related to the number of transmission units that the terminal can simultaneously support for transmission of the uplink data channel. As an example, as described above, even if multiple panels of a terminal are activated for PUSCH transmission, there may be restrictions in which only one panel is actually used for PUSCH transmission, and the terminal transmits information related to the restrictions to the terminal capability. It can be reported in the form of information.

For example, power control for transmission of the uplink data channel may be set for each transmission unit (eg, panel).

Through this, in relation to the operation of the terminal performing codebook-based PUSCH transmission and/or non-codebook-based PUSCH transmission, the base station has the effect of controlling uplink transmission in a specific panel unit and/or a specific beam unit of the terminal. Can be obtained. In addition, panel and/or beam-selective PUSCH scheduling with improved power control on a panel and/or beam basis may be performed.

(Second Example)

Based on the above-described specific transmission unit (eg, panel, UTE, etc.), a method of configuring and/or indicating uplink transmission of a plurality of transmission units (eg, multiple panels) will be described. In the present embodiment, for convenience of description, the privilege transmission unit is referred to as a panel and described, but it is obvious that this may be substituted with other technical terms.

In the case of panel-specific uplink transmission, a panel indication based on a panel identifier may be performed. Here, panel-specific uplink transmission may mean uplink transmission in a panel unit, and may also be referred to as panel-selective uplink transmission. In addition, the panel identifier (ID) includes identification information on the panel of the terminal and/or the base station, and may be replaced with an expression such as UTE ID. In addition, uplink transmission (eg, uplink signal transmission and/or uplink channel transmission) through different panels may be performed based on scheduling (and/or indication) by a base station or the like.

In this case, the terminal may report the number of panels it supports (eg, UTE, etc.) to the base station in the form of terminal capability information. For example, the terminal may report information on the maximum number of panels that it can support for one or more uplink transmission to the base station. The terminal may report information on the number of panels that can be simultaneously supported for uplink transmission to the base station.

For example, as described above, when the panel is defined as a concept corresponding to the SRS resource set, the setting and/or indication method of the panel may be differently set (or defined) according to the use of the corresponding SRS resource set. Hereinafter, in Method 1 to Method 4, the operation of the terminal and/or the base station related to the setting and/or instruction of the panel according to each use will be described.

Method 1)

First, a case in which identification information indicating a panel (hereinafter, a panel identifier) is set for each SRS resource set set for beam management will be described. The setting (and/or mapping) of the panel identifier for the SRS resource set may be performed through higher layer signaling (eg, RRC signaling, etc.).

In this case, the terminal may not expect the same panel identifier to be configured for different SRS resource sets configured for beam management purposes. That is, when the base station configures (and/or schedules) uplink transmission to the terminal, the base station may map (or configure) different panel identifiers for different SRS resource sets. In other words, the terminal may be configured and/or instructed to apply different panel identifiers to different SRS resource sets configured for beam management purposes.

The SRS resource sets may be based on the same time domain behavior. For example, an operation in the time domain may include a periodic operation, an aperiodic operation, or a semi-persistent operation. That is, if the operation of the terminal and/or the base station is limited only for an operation in a specific time domain, the same panel identifier may be redundantly assigned (or set, mapped) for each SRS resource set for an operation in different time domains. Through this, the SRS transmitted from the same panel (e.g., the same UTE) can be set to one or more of periodic, semi-persistent, or aperiodic, and a technical effect that can increase the flexibility of SRS transmission is achieved. have.

If a panel identifier is not set for the SRS resource set(s) for beam management purposes, the panel to be applied to the corresponding SRS resource set may be determined according to the UE implementation. As an example, if a panel identifier is not set for some (eg, subset) of SRS resource sets set for beam management purposes for the UE, the UE may use a panel according to the UE implementation for the SRS resource set for which the panel identifier is not set. Can be applied (or mapped), and SRS transmission can be performed through the corresponding panel. Alternatively, the UE may define (or set) a specific rule to perform SRS transmission by mapping to the SRS resource set from a panel not allocated to the SRS resource set.

The terminal may perform SRS transmission for the SRS resource set(s) in which the panel identifier is set (explicitly) by using the corresponding panel identifier. On the other hand, for the SRS resource set(s) for which the panel identifier is not set, the corresponding terminal is defined to perform SRS transmission by preferentially mapping among other panel identifier(s) other than the set panel identifier(s) (and/or setting) , Instructed). Through this, there is an effect that the SRS beam sweeping and/or the SRS panel sweeping operation may be performed in units of panels. For example, the terminal may perform mapping between the SRS resource set and the panel identifier sequentially (or crosswise) from the panel identifier that has not been set (and/or assigned). When all the panel identifiers supported by the corresponding terminal are mapped at least once, an operation of overlapping the pre-mapped panel identifiers to the SRS resource set may be defined (and/or set, indicated). As the panel identifiers are evenly allocated (or mapped), there is a technical effect that the terminal can perform uplink transmission evenly using different panel(s).

Method 2)

Next, a case where identification information indicating a panel (hereinafter, a panel identifier) is set for each SRS resource set set for a codebook will be described. When the SRS resource set is set for codebook use, it may mean that the corresponding SRS resource set is set for codebook-based PUSCH transmission. At this time, a plurality of SRS resource sets for codebook use may be set. The setting (and/or mapping) of the panel identifier for the SRS resource set may be performed through higher layer signaling (eg, RRC signaling, etc.).

If the panel identifier is not set for the SRS resource set(s) for the codebook use, the panel to be applied to the corresponding SRS resource set may be determined according to the UE implementation. The panel identifier may be indicated by DCI (ie, UL grant) for scheduling PUSCH transmission. That is, information on the corresponding panel identifier may be included in the DCI. In addition, when the panel identifier indicated by the DCI is also set for the SRS resource set for beam management purposes, the terminal needs to transmit the scheduled PUSCH using the same panel indicated by the panel identifier.

When the panel identifier(s) is set (and/or indicated, interlocked, mapped) for the SRS resource set for codebook use, a specific transmit rank indicator (TRI) and/or transmit precoding matrix indicator (TPMI), etc. A transmit rank and/or transmit PMI (transmit PMI) for the corresponding PUSCH may be indicated together. Table 8 shows examples of TPMI indexes that can be indicated through the TPMI.

When the panel identifier(s) is set in the SRS resource set for codebook use, it may be limited that a specific TPMI index is indicated for the corresponding terminal among TPMI indexes that can be indicated through the corresponding TPMI. For example, non-interference (nonCoherent) related TPMI index(s) and/or partial and non-interference (PartialAndNonCoherent) related TPMI index(s) may be restricted so that they are not indicated. The non-interference related TPMI index(s) includes the index(s) when there is only one non-zero value per column vector (e.g., TPMI indexes 0 to 3 in Table 8, etc.), and partial and non-interference The related TPMI index(s) may include index(s) when there is at least one non-zero value per column vector (eg, TPMI indexes 0 to 15 in Table 8, etc.). In this case, the limitation may be automatically applied through a rule or the like, or may be applied through a setting and/or instruction of a base station or the like.

As an example, a specific TPMI index(s) indicating TPMI over multiple terminal panels may be interpreted as TPMI index(s) existing before a method of setting (and/or mapping, associating) a panel identifier. . As described in the present method, when a specific panel of a terminal is independently (or separately) accompanied by a specific panel identifier(s) and a base station applies the scheduling (and/or setting instruction) to the scheduling (and/or setting instruction), the TPMI across the multiple terminal panels The specific TPMI index(s) indicating the may be excluded during scheduling. Through this, there is a technical effect that DCI overhead can be reduced since it is possible to eliminate the possibility of redundant indication of the panel and the like and reduce the size of the TPMI indication field.

The above-described TPMI restriction operation (ie, codebook-subset restriction operation) can be applied in connection with the corresponding report when there is a report of the terminal capability information related thereto. And/or, the TPMI limiting operation may be selectively applied together with a setting and/or an indicator of a base station separate from the reporting of the terminal capability information.

In addition, the panel identifier may be linked (or set, mapped) at the SRS resource level in the SRS resource set. For example, a panel identifier may be set for each SRS resource in an SRS resource set set for a codebook use, and the panel identifier may be indicated by DCI (ie, UL grant) for PUSCH scheduling. In addition, when the panel identifier indicated by the DCI is also set for the SRS resource set for beam management purposes, the terminal needs to transmit the scheduled PUSCH using the same panel indicated by the panel identifier. In addition, even when a panel identifier is set for each SRS resource, the above-described TPMI restriction operation may be applied.

Method 3)

Next, a case where identification information indicating a panel (hereinafter, a panel identifier) is set for each SRS resource set set for a non-codebook purpose will be described. When the SRS resource set is set for non-codebook use, it may mean that the corresponding SRS resource set is set for non-codebook-based PUSCH transmission. In this case, a plurality of SRS resource sets for non-codebook purposes may be set. The setting (and/or mapping) of the panel identifier for the SRS resource set may be performed through higher layer signaling (eg, RRC signaling, etc.).

If the panel identifier is not set for the SRS resource set(s) for non-codebook use, the panel to be applied to the SRS resource set may be determined according to the UE implementation. The panel identifier may be indicated by DCI (ie, UL grant) for scheduling PUSCH transmission. That is, information on the corresponding panel identifier may be included in the DCI. In addition, when the panel identifier indicated by the DCI is also set for the SRS resource set for beam management purposes, the terminal needs to transmit the scheduled PUSCH using the same panel indicated by the panel identifier. Through this, non-codebook-based simultaneous uplink transmission from multiple panels can be configured, indicated, and/or scheduled.

In addition, the panel identifier may be linked (or set, mapped) at the SRS resource level in the SRS resource set. For example, a panel identifier may be set for each SRS resource in an SRS resource set configured for non-codebook use, and the panel identifier may be indicated by DCI (ie, UL grant) for PUSCH scheduling. In addition, when the panel identifier indicated by the DCI is also set for the SRS resource set for beam management purposes, the terminal needs to transmit the scheduled PUSCH using the same panel indicated by the panel identifier. In addition, even when a panel identifier is set for each SRS resource, the above-described TPMI restriction operation may be applied. Through this, non-codebook-based simultaneous uplink transmission from multiple panels can be configured, indicated, and/or scheduled.

Method 4)

Next, a case where the identification information indicating the panel (hereinafter, the panel identifier) is set for each SRS resource set set for antenna switching will be described. In this case, a plurality of SRS resource sets for antenna switching may be set. The setting (and/or mapping) of the panel identifier for the SRS resource set may be performed through higher layer signaling (eg, RRC signaling, etc.).

If the panel identifier is not set for the SRS resource set(s) for antenna switching purposes, the panel to be applied to the SRS resource set may be determined according to the UE implementation. As an example, if a panel identifier is not set for some (eg, subset) of SRS resource sets set for antenna switching purposes for the UE, the UE may use a panel according to the UE implementation for the SRS resource set for which the panel identifier is not set. Can be applied (or mapped), and SRS transmission can be performed through the corresponding panel. Alternatively, the UE may define (or set) a specific rule to perform SRS transmission by mapping to the SRS resource set from a panel not allocated to the SRS resource set.

The terminal may perform SRS transmission for the SRS resource set(s) in which the panel identifier is set (explicitly) by using the corresponding panel identifier. On the other hand, for the SRS resource set(s) for which the panel identifier is not set, the corresponding terminal is defined to perform SRS transmission by preferentially mapping among other panel identifier(s) other than the set panel identifier(s) (and/or setting) , Instructed). Through this, there is an effect that the SRS antenna switching and/or the SRS panel switching operation in a panel unit may be performed. The base station may acquire DL channel state information based on the SRS antenna switching and/or SRS panel switching operation. For example, the terminal may perform mapping between the SRS resource set and the panel identifier sequentially (or crosswise) from the panel identifier that has not been set (and/or assigned). When all the panel identifiers supported by the corresponding terminal are mapped at least once, an operation of overlapping the pre-mapped panel identifiers to the SRS resource set may be defined (and/or set, indicated). As the panel identifiers are evenly allocated (or mapped), there is a technical effect that the terminal can perform uplink transmission evenly using different panel(s).

In the above-described method, an operation related to antenna switching applied to one SRS resource set set for antenna switching is assumed. That is, the antenna switching operation (e.g., 1T (transmission)/2R (reception), 1T/4R, 2T/4R, etc.) targeting a plurality of SRS resources in one SRS resource set has one basic unit. It may be based on (eg, UTE). When this method is extended to multiple panels, a plurality of panel identifiers are assigned, and the proposed method described in the present specification may be applied based on a plurality of SRS resource sets.

For example, in relation to the antenna switching operation, especially in the case of 1T/4R setting and when the numerology-related subcarrier spacing is large (for example, 120 kHz, etc.), up to two guard symbols are set. Should be. For this reason, there may be a case in which all 1T/4R SRS resources cannot be allocated in one slot, and for this, two SRS resource sets may be configured. In the latter case, from the viewpoint of the proposed operation based on one SRS resource set (for antenna switching purposes) corresponding to one panel, it may be treated as an exception in which two SRS resource sets corresponding to one panel are mapped. . Here, the two SRS resource sets may be for covering a large subcarrier interval and a large guard interval (eg, two symbols) from the viewpoint of antenna switching.

The two SRS resource sets may be referred to as an SRS resource set group. As an example, one panel identifier may be set for each SRS resource set group for antenna switching, and a plurality of SRS resource set groups may be set. Here, each of the SRS resource set groups may include one or more SRS resource sets. At this time, in the case of 1T/4R set to a large subcarrier interval and/or a large guard interval, the number of SRS resource sets constituting the SRS resource set group is set to 2, otherwise, the SRS constituting the SRS resource set group The number of resource sets may be set to 1.

In addition, in at least one of the above-described methods 1 to 4, the panel identifier is explicitly indicated through a specific DCI, or implicitly (using higher layer signaling information, etc.) based on some information included in the DCI. May be indicated.

First, methods of explicitly indicating a panel indicator related to uplink transmission will be described.

For example, a specific field is defined separately (or independently) from the SRI (SRS resource indicator) field that may exist in the DCI (hereinafter, UL DCI) related to uplink transmission, and a panel identifier is set using the specific field And/or may be indicated. As an example, the specific field may be referred to as a panel-related field, a UTE field, or the like, and may be used to indicate one or more panel identifiers.

As a specific example, when the specific field is composed of 2 bits, a value of "0" (or state) indicates (or indicates) the first panel (UTE #1), and a value of "01" Is set and/or defined to indicate the second panel (UTE #2), the value “10” indicates the first panel and the second panel, and the value “11” indicates the third panel (UTE #3) Can be. Like a value of "10", there may be a field value (or state) indicating a plurality of panel identifiers together. The base station or the like may set and/or indicate the definition of such a value (or state) through higher layer signaling (eg, RRC signaling and/or MAC-CE signaling, etc.). In addition, when reporting the value of the number of maximum panel identifiers supported by the corresponding terminal in the form of terminal capability information, the codepoints of the specific field are set in a specific combination and/ Or it can be created. For example, when the maximum number of panels that the terminal can support is X, a value of "0" (or state) indicates a first panel (UTE #1), and a value of "01" indicates a second panel (UTE #2). And, ..., the value "11" may be set and/or defined to indicate the Xth panel (UTE #X). Even in this case, there may be a field value (or state) indicating a plurality of panel identifiers together.

When a separate field (eg, panel-related field, UTE field) for indicating the panel identifier is set and/or indicated as in the above example, a specific panel (eg, UTE) of the terminal may be indicated through the corresponding field. have. And/or, together with this, a beam for PUSCH transmission may be indicated through an SRI field (or a UL-TCI (Transmit Configuration Index) field), and the corresponding beam indicates a corresponding beam in the specific panel. I can. As an example, when a PUSCH transmission beam is indicated by an SRI field together with the above-described panel indication, the corresponding PUSCH transmission beam indicates an SRS resource level or a specific reference signal (eg, an uplink reference signal, a downlink reference signal). It may be indicated by the indicated UL-TCI state level. In this case, the corresponding PUSCH transmission beam may be indicated (together) by SRS resource(s) and/or UL-TCI state(s) within the indicated panel.

In addition, although the above example has been described based on the case where the separate field is composed of 2 bits, it goes without saying that the method can be extended and applied even when the corresponding field is composed of a plurality of bits.

For another example, a new field may be configured in an extended form in which an SRI field that may exist in a DCI (hereinafter, referred to as UL DCI) related to uplink transmission is reinterpreted and modified. The name of the corresponding field is maintained as an SRI field or may be referred to as a new name (eg, UL TCI field). At the same time, one or more panel identifiers are indicated by using the corresponding field, and transmission beam(s) for PUSCH transmission purposes within (or linked to) the corresponding panel(s) may be indicated (together). For such panel indication and beam indication, the field may be defined, set, and/or indicated.

As a specific example, when the field (ie, the modified or reinterpreted SRI field, the UL TCI field) is composed of 3 bits (3 bits), the "00" value (or state) is {1st panel, 3rd SRI} And the value "001" indicates {first panel, fifth SRI}, the value “010” indicates {second panel, fourth SRI}, and the value “011” indicates {second panel, 6th SRI} is indicated, a value of "100" indicates {1st panel, 3rd SRI} and {2nd panel, 4th SRI}, and a value of "101" is {1st panel, 5th SRI} And {2nd panel, 6th SRI}, "110" value indicates {1st panel, 2nd CSI-RS resource indicator (CRI)}, and "111" value is {2nd panel, 2nd 8 It may be set and/or defined to indicate a Synchronization Signal Block Resource Indicator (SSBRI)}. Here, in the case of the values "110" and "111", the UL TCI field may be considered. The base station or the like may set and/or indicate the definition of such a value (or state) through higher layer signaling (eg, RRC signaling and/or MAC-CE signaling, etc.). Even in this case, there may be a field value (or state) indicating a plurality of panel identifiers together.

In addition, when reporting the value of the number of maximum panel identifiers supported by the corresponding terminal in the form of terminal capability information, the codepoints of the specific field are set in a specific combination and/ Or it can be created. And/or, if the number of SRS resources configured to indicate the transmission beam(s) for PUSCH purposes such as the SRI field is J, the code value in the combination form is also linked to the J (eg, J=2) value (additionally) May be set and/or created. Even in this case, there may be a field value (or state) indicating a plurality of panel identifiers together. For example, when the maximum number of panels that the terminal can support is X, a value of "xx000" (or state) indicates {1st panel, 1st SRI}, and a value of "xx001" is {1st panel, 2nd SRI }, and the "xx010" value indicates {the second panel, the first SRI}, and the value, "xxxxx" indicates the {the (X-1) panel, the first SRI}, and the “xxxxx” Value indicates {th panel, 2nd SRI}, "xxxxx" value indicates {Xth panel, 1st SRI}, and "xxxxx" value indicates {th panel, 2nd SRI It can be set and/or defined to indicate }.

When a field for indicating a panel identifier (eg, a panel-related field, a UTE field, and a UL-TCI field) is set and/or indicated as in the above example, a specific panel (eg, UTE) of the terminal is Can be indicated. And/or, together with this, a beam for PUSCH transmission may be indicated, and the corresponding beam may indicate a corresponding beam in the specific panel. As an example, when a PUSCH transmission beam is indicated together with the above-described panel indication, the corresponding PUSCH transmission beam is UL- indicating an SRS resource level or a specific reference signal (eg, an uplink reference signal, a downlink reference signal). It can be indicated by the TCI status level. In this case, the corresponding PUSCH transmission beam may be indicated (together) by SRS resource(s) and/or UL-TCI state(s) within the indicated panel.

In addition, some of the above examples have been described based on a case where the field is composed of 3 bits, but it is a matter of course that the method can be extended and applied even when the field is composed of a plurality of bits.

Next, a method of implicitly indicating a panel indicator related to uplink transmission will be described. As described above, unlike the method of indicating the panel in the manner of a separate field or an integrated field, a method of recognizing a panel identifier associated with uplink transmission by implicit indication may also be considered. .

For example, when scheduling a PUSCH, a specific field (e.g., an SRI field, a UL-TCI field, etc.) is indicated so that SRS resource(s) to be applied to beam determination for PUSCH transmission may be determined, configured, and/or indicated. . In this case, the terminal interprets the panel identifier associated (or set, indicated) associated with higher information including the corresponding SRS resource(s) as implicitly indicated, and uses the panel according to the corresponding panel identifier for the PUSCH transmission ( Or, an operation to be applied) may be defined (or set, indicated). For example, the higher information may be an SRS resource set including one or more SRS resources.

And/or, for example, in the case of a target SRS resource, the panel identifier (eg, UTE ID)(s) may be additionally set in spatial related information (eg, higher layer parameter spatialRelationInfo, etc.). For example, when the panel identifier is set to an index of a synchronization signal block (SSB) (eg, ssb-Index, etc.) in spatial related information, the terminal is indicated by the index of the SSB in the panel indicated by the corresponding panel identifier. Uplink transmission based on the target SRS resource may be performed using the same spatial domain transmission filter (or beam, etc.) used for reception of the reference SS/PBCH block. As an example, when the panel identifier is set to the index of the CSI-RS (eg, csi-RS-Index, etc.) within the spatial related information, the terminal is determined by the index of the CSI-RS in the panel indicated by the corresponding panel identifier. Uplink transmission based on the target SRS resource may be performed using the same spatial domain transmission filter (or beam, etc.) used for reception of the indicated reference CSI-RS. For example, when the panel identifier is set as the index of the SRS resource in the spatial related information, the terminal is used for transmission of a reference SRS indicated by the index of the SRS resource in the panel indicated by the corresponding panel identifier. Uplink transmission based on the target SRS resource may be performed by using the same spatial domain transmission filter (or beam, etc.).

Through the above-described proposed method, the reference beam indication for each target SRS resource is a reference transmitted and received through a specific panel, based on spatial relation information (eg, spatial relation info) that can be additionally assigned (or set) a panel identifier. It can be performed using a reference RS (RS). Through this, a panel and/or a beam specific beam indication operation may be applied, and the base station provides a reference beam indication for each specific panel (eg, UTE) of the terminal through the corresponding operation. It has the advantage of being able to control it. As an example, when the indicated reference RS is CSI-RS and/or SSB, the UE may receive an indication of a reference beam to be applied to uplink through a target SRS resource using a specific panel identifier (eg, UTE ID) indicated together. have. In this case, the uplink through the target SRS resource may be performed through a Tx beam corresponding to a Rx beam applied to reception of a corresponding DL RS (eg, CSI-RS and/or SSB). . Or, as an example, when the indicated reference RS is an SRS, the UE may receive a reference beam to be applied to the uplink through the target SRS resource by using a specific panel identifier (eg, UTE ID) indicated together. In this case, uplink through the target SRS resource may be performed using a transmission beam applied to transmission of the corresponding SRS.

Among the above-described methods, "Operation based on that a panel identifier is set for each set of SRS resources for a specific purpose" refers to the associated panel when transmitting when the terminal performs uplink transmission through SRS resources in the corresponding SRS resource set (eg : UTE) may be a setting/instruction operation to perform actual transmission. On the other hand, the operation of setting and/or indicating the panel identifier linked to the spatial related information (eg, the spatialRelationInfo setting parameter) as described above is performed by using the linked panel when the terminal obtains reference beam related information. It may be an operation of obtaining information on a reference beam from the transmitted/received reference RS, and setting and/or instructing to apply the obtained information to transmission beam determination of a target SRS resource as spatial relation beam indication information. . That is, interlocking (and/or setting) the panel identifier(s) (eg, UTE ID(s)) for different purposes such as “transmission panel indication” and “panel indication to be applied when obtaining information on a reference beam” Mechanisms can be established and/or dictated. Through this, there is an effect of increasing the flexibility of configuration related to the terminal panel and beam indication, improving uplink (UL) transmission performance and reducing unintended uplink interference (UL interference). .

In addition, the proposed scheme based on the above-described spatial related information (eg, higher layer parameter spatialRelationInfo) can be extended and applied to not only an uplink data channel (eg, PUSCH) but also an uplink control channel (eg, PUCCH). That is, a specific panel identifier (eg, UTE ID) may also be set (and/or linked, linked) for spatial related information (eg, PUCCH-SpatialRelationInfo) for transmission of PUCCH. Table 9 shows an example of spatial related information for transmission of the above-described PUCCH.

Referring to Table 9, similar to the above-described spatial-related information for SRS use, a parameter of spatial-related information for transmission of PUCCH may be set to one of {ssb-Index, csi-RS-Index, srs}.

If the above-described proposed methods are extended to PUCCH, it may be as follows.

For example, in the case of a target PUCCH resource, the panel identifier (eg, UTE ID)(s) may be additionally set in spatial related information (eg, higher layer parameter PUCCH-SpatialRelationInfo, etc.). For example, when the panel identifier is set to an index of a synchronization signal block (SSB) (eg, ssb-Index, etc.) in spatial related information, the terminal is indicated by the index of the SSB in the panel indicated by the corresponding panel identifier. Uplink transmission based on the target PUCCH resource may be performed using the same spatial domain transmission filter (or beam, etc.) used for reception of the reference SS/PBCH block. As an example, when the panel identifier is set to the index of the CSI-RS (eg, csi-RS-Index, etc.) within the spatial related information, the terminal is determined by the index of the CSI-RS in the panel indicated by the corresponding panel identifier. Uplink transmission based on the target PUCCH resource may be performed using the same spatial domain transmission filter (or beam, etc.) used for reception of the indicated reference CSI-RS. For example, when the panel identifier is set as the index of the SRS resource in the spatial related information, the terminal is used for transmission of a reference SRS indicated by the index of the SRS resource in the panel indicated by the corresponding panel identifier. Uplink transmission based on the target PUCCH resource may be performed using the same spatial domain transmission filter (or beam, etc.).

And/or, signaling for setting the panel identifier(s) (eg, UTE ID(s)) may be set for each individual PUCCH resource as described above, but a specific PUCCH resource group (PUCCH resource group) unit (eg, PUCCH It may be set for each resource set, all PUCCH resources set in a specific BWP, all PUCCH resources set in a specific CC). That is, there is an advantage of reducing signaling overhead by configuring and/or signaling a panel (eg, UTE) in a form that is commonly applied across a plurality of PUCCH resources. In particular, in the case of a specific type of PUCCH transmission (e.g., PUCCH transmission for (dynamic) HARQ ACK/NACK transmission), an exception (or separate) setting operation for the corresponding transmission through which panel may be defined may be defined. As an example, in the case of PUCCH for (dynamic) HARQ ACK/NACK transmission, the operation of performing the corresponding PUCCH transmission through the panel used to receive the downlink data in which the terminal generated ACK/NACK is separately (or independently) ) Can be applied. Through this, there is an effect of allowing the downlink reception panel to be applied as it is to the uplink ACK/NACK transmission panel.

In addition, in the above-described proposed methods, the method of applying a specific panel (eg, UTE) to downlink reception implicitly assumes that the corresponding panel is a panel that can be used for both uplink transmission and downlink reception. have. As an example, a terminal having a panel capable of performing transmission and reception at the same time (or together) may perform the above-described proposed methods. On the other hand, when a specific panel is implemented only for downlink reception or uplink transmission, a downlink reception entity (DRE) (and/or DRE ID) needs to be defined or configured in the above-described proposed methods. There may be. In this case, the spatial domain transmission filter (or beam) to be applied to uplink transmission may be the same as the spatial domain transmission filter used for reception of the reference RS in the DRE indicated by the DRE ID. Through this, there is an effect of setting and/or indicating an entity capable of receiving for each downlink receiving panel (eg, DRE).

And/or, as an example, a connection (or interworking relationship) setting between the DRE ID and the UTE ID may be separately provided. In the above-described proposed methods, the connection setting may be applied together, and in the case of a terminal capable of performing both transmission and reception using the same (physical) panel, the connection setting may mean the same panel.

And/or, when a specific "connection between UTE ID and DRE ID" that is not accurately calibrated is set (or indicated, applied), it is the same transmission/reception panel as in a non-beam correspondence terminal. When this is not used, there is an effect that transmission and reception can be controlled, set, or indicated by forming a pair with each other. For example, although the transmission panel(s) and the reception panel(s) are implemented separately, a specific reception panel closest to a specific transmission panel or having a high correlation is interlocked in the above form, etc. An operation such as receiving a specific downlink RS received through a panel to derive a reference beam, and applying the derived reference beam to uplink transmission based on a corresponding linked transmission panel may be applied. Conversely, when a base station determines a corresponding downlink beam by referring to a specific uplink transmission (e.g., SRS, etc.) based on the associated transmission panel, the panel of the terminal receiving it is determined It can also be directed to a receiving panel (eg, DRE ID).

And/or, in order to support the above-described operation(s), a method in which the terminal reports the value measured with which receiving panel (eg, DRE ID) at the time of specific CSI reporting and/or beam reporting. Can also be applied. In this case, the uplink channel reported by the terminal is defined, set, and/or indicated by the reception panel and the operation to transmit through the corresponding transmission panel (eg, UTE ID) linked through the above-described connection setup (or interworking relationship). Can be.

Terminal capability information related to the above-described proposal method(s) may be set or defined, and signaling for the delivery of the terminal capability information may be set together with the above-described proposal method(s). As an example, the terminal capability information includes information on whether a terminal is implemented with a transmission/reception panel(s) capable of performing all transmission/reception operations using a single panel, information on whether a transmission panel and a reception panel are separate terminals. , And/or information (eg, the number, etc.) related to the transmission panel and/or the reception panel that are candidates that can be set as a pair.

For example, the terminal may report the terminal capability information to the base station. The terminal may receive configuration and/or scheduling information for an uplink transmission-related operation according to at least one of the above-described proposed method(s) from the base station. Here, the corresponding configuration and/or scheduling information may include information on a terminal transmission/reception panel and/or beam-related configuration, a panel identifier (eg, UTE ID(s), DRE ID(s), etc.). . The terminal may perform uplink transmission using a specific panel and/or beam based on the corresponding configuration and/or scheduling information. Similarly, the base station may receive the terminal capability information from the terminal. The base station may transmit configuration and/or scheduling information for an uplink transmission-related operation according to at least one of the above-described proposed method(s) to the terminal. Here, the corresponding configuration and/or scheduling information may include information on a terminal transmission/reception panel and/or beam-related configuration, a panel identifier (eg, UTE ID(s), DRE ID(s), etc.). . The base station may receive an uplink channel and/or signal transmitted using a specific panel and/or beam, based on the corresponding configuration and/or scheduling information.

13 shows an example of an operation flowchart of a terminal transmitting an uplink data channel in a wireless communication system to which the method proposed in this specification can be applied. 13 is merely for convenience of description and does not limit the scope of the present specification.

Referring to FIG. 13, it is assumed that transmission and reception of an uplink data channel based on a multi-panel is performed between a terminal and a base station as in the above-described embodiment. In FIG. 13, step(s) of transmitting and receiving SRS for transmission and reception of the uplink data channel may be additionally performed between the terminal and the base station. A transmission unit (eg, panel, UTE, etc.) and a beam (or a spatial domain transmission filter, etc.) to be applied to transmission and reception of the uplink data channel may be set and/or applied based on the transmitted and received SRS.

The terminal may receive configuration information related to an uplink data channel (eg, PUSCH) (S1305). The configuration information may be received through higher layer signaling (eg, RRC signaling, etc.). As an example, the configuration information is at least one of a transmission unit related to transmission of the uplink data channel (eg, the aforementioned panel, SRS resource set set for BM use, etc.) or a beam (eg, SRS resource set for BM use). It may include one or more settings (eg, UL TCI states) including.

For example, the operation in which the terminal (eg, 1510 and/or 1520 of FIGS. 15 to 19) receives the setting information in step S1305 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the configuration information, and one or more transceivers 106 may receive the configuration information. I can.

The terminal may receive downlink control information (eg, DCI, DCI format 0_1, etc.) for scheduling transmission of an uplink data channel (S1310). For example, the downlink control information may include i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam. In this case, the first information and the second information are respectively in a first field (eg, the aforementioned UL-TCI field, panel related field, etc.) and a second field (eg, SRI field, etc.) in the downlink control information. Can be based. That is, information indicating the transmission unit and information indicating the beam may be indicated through separate fields.

In addition, as described above, the first information may include a transmission unit identifier mapped to a codepoint of the first field. Also, the beam based on the second information may be one of one or more beams associated with a transmission unit based on the first information. For example, the transmission unit may be set in units of an SRS resource set related to transmission of the uplink data channel through higher layer signaling. In this case, the SRS resource associated with the beam may be one of one or more SRS resources included in the SRS resource set associated with the transmission unit.

In addition, as described above, the terminal may transmit information on the maximum number of transmission units that it can support (eg, the maximum number of panels that can be supported) to the base station. That is, the terminal may report the information to the base station in the form of terminal capability information. In this case, based on the maximum number, one or more transmission units supported by the terminal may be sequentially mapped to code values of the first field.

For example, the operation in which the terminal (eg, 1510 and/or 1520 of FIGS. 15 to 19) receives the control information in step S1310 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the control information, and one or more transceivers 106 may receive the control information. I can.

The terminal may transmit the uplink data channel (through a specific transmission unit and beam) based on the downlink control information (S1315).

For example, the operation of the UE (eg, 1510 and/or 1520 of FIGS. 15 to 19) transmitting the uplink data channel in step S1315 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. I can. For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the uplink data channel, and one or more transceivers 106 may control the uplink data channel. Channel can be transmitted.

14 shows an example of an operation flowchart of a base station receiving an uplink data channel in a wireless communication system to which the method proposed in the present specification can be applied. 14 is merely for convenience of description and does not limit the scope of the present specification.

Referring to FIG. 14, it is assumed that transmission and reception of an uplink data channel based on a multi-panel is performed between a terminal and a base station as in the above-described embodiment. In FIG. 14, step(s) of transmitting and receiving SRS for transmission and reception of the uplink data channel may be additionally performed between the terminal and the base station. A transmission unit (eg, panel, UTE, etc.) and a beam (or a spatial domain transmission filter, etc.) to be applied to transmission and reception of the uplink data channel may be set and/or applied based on the transmitted and received SRS.

The base station may transmit configuration information related to an uplink data channel (eg, PUSCH) (S1405). The configuration information may be transmitted through higher layer signaling (eg, RRC signaling, etc.). As an example, the configuration information is at least one of a transmission unit related to transmission of the uplink data channel (eg, the aforementioned panel, SRS resource set set for BM use, etc.) or a beam (eg, SRS resource set for BM use). It may include one or more settings (eg, UL TCI states) including.

For example, the operation of the base station (eg, 1510 and/or 1520 of FIGS. 15 to 19) transmitting the setting information in step S1405 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the configuration information, and one or more transceivers 106 may transmit the configuration information. have.

The base station may transmit downlink control information (eg, DCI, DCI format 0_1, etc.) for scheduling transmission of an uplink data channel (S1410). For example, the downlink control information may include i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam. In this case, the first information and the second information are respectively in a first field (eg, the aforementioned UL-TCI field, panel related field, etc.) and a second field (eg, SRI field, etc.) in the downlink control information. Can be based. That is, information indicating the transmission unit and information indicating the beam may be indicated through separate fields.

In addition, as described above, the base station may receive information on the maximum number of supportable transmission units of the terminal (eg, the maximum number of supportable panels) from the terminal. That is, the base station may report the information from the terminal in the form of terminal capability information. In this case, based on the maximum number, one or more transmission units supported by the terminal may be sequentially mapped to code values of the first field.

For example, the operation in which the terminal (eg, 1510 and/or 1520 of FIGS. 15 to 19) transmits the control information in step S1410 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. . For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the control information, and one or more transceivers 106 may transmit the control information. have.

The base station may receive the uplink data channel transmitted (through a specific transmission unit and beam) based on the downlink control information (S1415).

For example, the operation of the UE (eg, 1510 and/or 1520 of FIGS. 15 to 19) receiving the uplink data channel in step S1415 described above may be implemented by the apparatus of FIGS. 15 to 19 to be described below. I can. For example, referring to FIG. 15, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the uplink data channel, and one or more transceivers 106 may control the uplink data channel. Can receive channels.

(Third Example)

In application of the method(s) proposed in the first and/or second embodiments described above, some operations related to panel switching may be defined or considered. In this embodiment, a method(s) of limiting or limiting the operation of a terminal in connection with the panel switching will be described. The method(s) described in this embodiment may be applied together to the method(s) in the first and/or second embodiments described above.

In relation to multi-panel transmission, terminal category information may be defined in order for the terminal to report its own capability information related to multi-panel transmission. As an example, three multi-panel UE (MPUE) categories may be defined, and the MPUE categories include whether a plurality of panels can be activated and/or whether transmission using multiple panels is possible. It can be classified according to. In the case of the first MPUE category (MPUE category 1), in a terminal in which multiple panels are implemented, only one panel can be activated at a time, and the delay for panel switching and/or activation is [ It can be set to X]ms. For example, the delay may be set longer than the delay for beam switching/activation, and may be set in units of symbols or slots. In the case of the second MPUE category (MPUE category 2), in a terminal in which multiple panels are implemented, multiple panels may be activated at a time, and one or more panels may be used for transmission. That is, in the second MPUE category, simultaneous transmission using panels may be possible. In the case of a third MPUE category (MPUE category 3), in a terminal in which multiple panels are implemented, multiple panels may be activated at a time, but only one panel may be used for transmission.

Hereinafter, with respect to uplink beam management (UL BM), operation of a terminal and/or a base station in consideration of panel switching will be described.

For example, in the case of the first MPUE category as in the above example, the terminal must be able to identify one active panel. The UE may transmit a single settable SRS resource set for beam management through one specific active panel among a plurality of panels implemented in the UE. When a plurality of SRS resource sets are configured for the corresponding terminal, approximately 2 ms to 3 ms may be required for the terminal to switch the panel to be used for transmission.

In this case, in the case of a single SRS resource set set for the purpose of beam management of the first MPUE category, a method in which the base station indicates the terminal transmission panel to be used for each SRS transmission (hereinafter, option 1) may be considered. In the case of option 1, a panel identifier or the like may be used for the indication. And/or, a method in which the base station does not indicate the terminal transmission panel to be used for each SRS transmission (hereinafter, option 2) may be considered. In the case of option 2, the terminal may determine a transmission panel to be used for each SRS transmission, and the panel selection at the terminal side may be independent of the base station. And/or, a method in which the terminal reports information on the terminal transmission panel to be used for each SRS transmission to the base station (hereinafter, option 3) may be considered. Corresponding option 3 may be based on the assumption that the panel instruction by the base station is not performed. And/or, a method in which the terminal does not report information on the terminal transmission pair to be used for each SRS transmission to the base station (hereinafter, option 4) may be considered.

Among the above-described options 1 to 4, when both option 1 and option 3 are supported, the most seamless panel indication and identification between the base station and the terminal may be supported. For example, in the case of a single set of SRS resources set for beam management of the first MPUE category, the base station may indicate a terminal transmission panel to be used for each SRS transmission, and the terminal is a terminal transmission panel to be used for each SRS transmission. Information about can be reported to the base station. Here, the operation of the terminal to report the information may mean an operation of the terminal to determine and/or report the panel switching by itself.

In this case, when the terminal basically receives the instruction from the base station, it may be configured to perform uplink transmission (eg, SRS transmission, etc.) based on the terminal transmission panel according to the instruction. Specifically, the indication may be performed through signaling in the form of higher layer signaling (eg, RRC signaling, MAC-CE signaling, etc.) and/or lower layer signaling (eg, DCI, etc.). Within a period (eg, X symbols, X ms, etc.), a restriction may be set or defined so that the UE does not report information on the UE transmission panel to be used for each SRS transmission. In addition, a point in time (or interval) at which the above-described terminal can report after the predetermined time interval may be defined, set, and/or indicated.

In addition, among the above-described options 1 to 4, an operation in which option 1 and option 4 are supported together may be efficient. For example, in the case of a single set of SRS resources set for beam management of the first MPUE category, the base station may indicate a terminal transmission panel to be used for each SRS transmission, and the terminal is a terminal transmission panel to be used for each SRS transmission. It may be configured not to report information on to the base station. Here, the operation of the terminal to report the information may mean an operation of the terminal to determine and/or report the panel switching by itself.

In addition, combinations of options other than the combinations described above may be possible. In addition, when the SRS resource set(s) for beam management for the second MPUE category is set, an ID (ie, panel identifier) for a panel may be set for each SRS resource set and/or each SRS resource.

In the case of PUSCH transmission based on single panel selection, operation of a terminal and/or a base station in relation to panel switching is described.

For example, in the case of codebook (CB) or non-codebook (NCB) based PUSCH transmission for the first MPUE category, the base station transmits the PUSCH together with a requested offset for panel switching. It is possible to indicate a specific terminal transmission panel for. Alternatively, in this case, the base station may be configured not to support the indication.

In this case, as an additional (or linkage) operation when the base station is configured not to support the indication, a specific terminal transmission panel for specific uplink transmission (eg, PUSCH transmission) (for a terminal of the first MPUE category series) It may be possible to implicitly indicate the selection of the base station. As an example, specific downlink RS(s) and/or channels for PUSCH beam indication by signaling (e.g., SRI field in UL DCI, UL-TCI field in DCI, etc.) that can indicate a beam during PUSCH scheduling S) can be indicated. At this time, when reporting a specific downlink (beam) related to a specific downlink RS(s) and/or channel(s) (e.g., CRI(s), SSBRI(s), etc.) Receiving) Information on the downlink report measured by which receiving panel, such as a channel indicator, may exist. In this case, in connection with the corresponding information, the terminal corresponding to the terminal (receive) panel applied to the measurement of the specific downlink RS(s) and/or channel(s) indicated by the terminal during PUSCH scheduling by the operation (transmission) An operation for performing PUSCH transmission based on the panel may be defined, configured, and/or indicated. Here, the operation may be defined, set, and/or indicated in conjunction with a result reported through a downlink report or the like within the specific time period. And/or, an operation for performing uplink transmission (eg, PUSCH transmission) at a time when a required offset value for panel sweeping is applied in association and is delayed by a corresponding requested offset may be defined, set, and/or indicated. .

In the (implicit) interworking scheme as described above, even if a specific downlink (beam) reporting-related operation does not necessarily occur, from the perspective of panel-association, an operation that allows an implicit panel indication to be applied is also defined, configured, and And/or may be indicated. That is, even in a situation in which the specific downlink (beam) report is omitted (or dropped, sub-ranked) due to a specific condition, etc., if the UE applies the corresponding "preferred" panel by a specific measurement operation, this is followed by In the specific uplink transmission (e.g., PUSCH, PUCCH, or SRS), an implicit panel selection/instruction operation is applied so that the corresponding terminal performs uplink transmission using the selected panel is defined, configured, and /Or can be indicated.

In the case of PUCCH transmission based on single panel selection, operation of a terminal and/or a base station in relation to panel switching is described.

For example, in the case of PUCCH transmission based on single panel selection for both the first MPUE category and the second MPUE category, an identifier (ie, panel identifier) for a panel is set for the reference RS(s) set in PUCCH-spatialRelationInfo Can be. That is, the panel identifier may be set in a form associated with the reference RS(s) individually set. Alternatively, in the case of PUCCH transmission based on single panel selection for both the first MPUE category and the second MPUE category, an identifier for a panel (ie, a panel identifier) may be directly set in the PUCCH resource(s). That is, a panel identifier may be set and/or indicated for all PUCCH resources belonging to a specific BWP (and/or serving cell), or for each direct PUCCH resource, a specific PUCCH resource group, a specific PUCCH resource set, or a specific BWP (and/or serving cell). Through these methods, the flexibility of the setting can be increased.

In addition, in order to reduce the overhead of updating the PUCCH spatial relation, methods of simultaneously updating spatial relation information for all PUCCH resources or for each PUCCH resource set may be considered. That is, a method of simultaneously updating spatial relationship related information for each PUCCH resource set or for all PUCCH resources belonging to a specific BWP (and/or serving cell) may be defined, set, and/or indicated.

In addition, a terminal and/or a base station operating according to the above-described methods and embodiments, each step of FIGS. 11 to 14, etc. may be specifically implemented by the apparatus of FIGS. 15 to 19 to be described later. For example, the base station may correspond to the first wireless device, the terminal may correspond to the second wireless device, and vice versa may be considered in some cases.

For example, the above-described base station/terminal signaling and operation (eg, FIGS. 11 to 14, etc.) may be processed by one or more processors (eg, 102, 202) of FIGS. 15 to 19, and the above-described base station/ Terminal signaling and operation (eg, FIGS. 11 to 14, etc.) are memory in the form of instructions/programs (eg, instruction, executable code) for driving at least one processor (eg, 102, 202) of FIGS. 15 to 19 (For example, it may be stored in one or more memories (eg, 104,204) of FIGS. 15 to 19.

본 발명이 적용되는 통신 시스템 예Example communication system to which the present invention is applied

Without being limited thereto, various descriptions, functions, procedures, suggestions, methods and/or operational flowcharts of the present invention disclosed in this document may be applied to various fields requiring wireless communication/connection (eg, 5G) between devices. have.

Hereinafter, with reference to the drawings, more specifically illustrated. In the following drawings/description, the same reference numerals may exemplify the same or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise indicated.

15 illustrates a communication system 1500 applied to the present invention.

15, a communication system 1500 applied to the present invention includes a wireless device, a base station, and a network. Here, the wireless device means a device that performs communication using wireless access technology (eg, 5G NR (New RAT), LTE (Long Term Evolution)), and may be referred to as a communication/wireless/5G device. Although not limited thereto, wireless devices include robots 1510a, vehicles 1510b-1 and 1510b-2, eXtended Reality (XR) devices 1510c, hand-held devices 1510d, and home appliances 1510e. ), an Internet of Thing (IoT) device 1510f, and an AI device/server 400. For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous driving vehicle, a vehicle capable of performing inter-vehicle communication, and the like. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (eg, a drone). XR devices include Augmented Reality (AR)/Virtual Reality (VR)/Mixed Reality (MR) devices, including Head-Mounted Device (HMD), Head-Up Display (HUD), TV, smartphone, It can be implemented in the form of computers, wearable devices, home appliances, digital signage, vehicles, robots, and the like. Portable devices may include smart phones, smart pads, wearable devices (eg, smart watches, smart glasses), computers (eg, notebook computers, etc.). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors, smart meters, and the like. For example, the base station and the network may be implemented as a wireless device, and the specific wireless device 1520a may operate as a base station/network node to another wireless device.

The wireless devices 1510a to 1510f may be connected to the network 300 through the base station 1520. AI (Artificial Intelligence) technology may be applied to the wireless devices 1510a to 1510f, and the wireless devices 1510a to 1510f may be connected to the AI server 400 through the network 300. The network 300 may be configured using a 3G network, a 4G (eg, LTE) network, or a 5G (eg, NR) network. The wireless devices 1510a to 1510f may communicate with each other through the base station 1520/network 300, but may communicate directly (e.g. sidelink communication) without passing through the base station/network. For example, the vehicles 1510b-1 and 1510b-2 may perform direct communication (e.g. V2V (Vehicle to Vehicle)/V2X (Vehicle to everything) communication). In addition, the IoT device (eg, sensor) may directly communicate with other IoT devices (eg, sensors) or other wireless devices 1510a to 1510f.

Wireless communication/

connections

150a, 150b, and 150c may be established between the wireless devices 1510a to 1510f/base station 1520 and base station 1520/base station 1520. Here, the wireless communication/connection is various wireless access such as uplink/downlink communication 150a and sidelink communication 150b (or D2D communication), base station communication 150c (eg relay, IAB (Integrated Access Backhaul)). It can be achieved through technology (eg, 5G NR), and wireless devices/base stations/wireless devices, base stations and base stations can transmit/receive radio signals to each other through wireless communication/

connections

150a, 150b, 150c. For example, the wireless communication/

connections

150a, 150b, 150c can transmit/receive signals through various physical channels.To do this, based on various proposals of the present invention, for the transmission/reception of wireless signals, At least some of various configuration information setting processes, various signal processing processes (eg, channel encoding/decoding, modulation/demodulation, resource mapping/demapping, etc.), resource allocation processes, and the like may be performed.

본 발명이 적용되는 무선기기 예Examples of wireless devices to which the present invention is applied

16 illustrates a wireless device applicable to the present invention.

Referring to FIG. 16, a first wireless device 1510 and a second wireless device 1520 may transmit and receive wireless signals through various wireless access technologies (eg, LTE and NR). Here, {the first wireless device 1510, the second wireless device 1520} is {wireless device 1510x, base station 1520} and/or {wireless device 1510x, wireless device 1510x) in FIG. 15 } Can be matched.

The first wireless device 1510 includes 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 108. The processor 102 controls the memory 104 and/or the transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed herein. For example, the processor 102 may process information in the memory 104 to generate the first information/signal, and then transmit the wireless signal including the first information/signal through the transceiver 106. In addition, the processor 102 may receive the wireless signal including the second information/signal through the transceiver 106 and store the information obtained from the signal processing of the second information/signal 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 perform some or all of the processes controlled by the processor 102, or instructions for performing the descriptions, functions, procedures, suggestions, methods, and/or operational flow charts disclosed in this document. It can store software code including Here, the processor 102 and the memory 104 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR). The transceiver 106 may be coupled with the processor 102 and may transmit and/or receive radio signals through one or more antennas 108. The transceiver 106 may include a transmitter and/or a receiver. The transceiver 106 may be mixed with an RF (Radio Frequency) unit. In the present invention, the wireless device may mean a communication modem/circuit/chip.

The second wireless device 1520 includes one or more processors 202 and one or more memories 204, and may further include one or more transceivers 206 and/or one or more antennas 208. The processor 202 controls the memory 204 and/or the transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed herein. For example, the processor 202 may process information in the memory 204 to generate third information/signal, and then transmit a wireless signal including the third information/signal through the transceiver 206. Further, the processor 202 may receive a radio signal including the fourth information/signal through the transceiver 206 and then store information obtained from signal processing of the fourth information/signal 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 perform some or all of the processes controlled by the processor 202, or instructions for performing the descriptions, functions, procedures, suggestions, methods, and/or operational flow charts disclosed in this document. It can store software code including Here, the processor 202 and the memory 204 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR). The transceiver 206 may be connected to the processor 202 and may transmit and/or receive radio signals through one or more antennas 208. The transceiver 206 may include a transmitter and/or a receiver. The transceiver 206 may be used interchangeably with an RF unit. In the present invention, the wireless device may mean a communication modem/circuit/chip.

Hereinafter, hardware elements of the

wireless devices

1510 and 1520 will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or

more processors

102, 202. For example, one or

more processors

102, 202 may implement one or more layers (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or

more processors

102, 202 may be configured to generate one or more Protocol Data Units (PDUs) and/or one or more Service Data Units (SDUs) according to the description, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document. Can be generated. One or

more processors

102, 202 may generate messages, control information, data, or information according to the description, function, procedure, proposal, method, and/or operational flow chart disclosed herein. At least one processor (102, 202) generates a signal (e.g., baseband signal) containing PDU, SDU, message, control information, data or information according to the functions, procedures, proposals and/or methods disclosed in this document. , Can be provided to one or more transceivers (106, 206). One or

more processors

102, 202 may receive signals (e.g., baseband signals) from one or

more transceivers

106, 206, and the descriptions, functions, procedures, proposals, methods and/or operational flowcharts disclosed herein PDUs, SDUs, messages, control information, data or information may be obtained according to the parameters.

One or more of the

processors

102 and 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer. One or more of the

processors

102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing 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, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document may be implemented using firmware or software, and firmware or software may be implemented to include modules, procedures, functions, and the like. The description, functions, procedures, proposals, methods and/or operational flow charts disclosed in this document include firmware or software configured to be performed in one or

more processors

102, 202, or stored in one or

more memories

104, 204, and It may be driven by the

above processors

102 and 202. The descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and/or a set of instructions.

One or

more memories

104, 204 may be connected to one or

more processors

102, 202 and may store various types of data, signals, messages, information, programs, codes, instructions and/or instructions. One or

more memories

104 and 204 may be composed of ROM, RAM, EPROM, flash memory, hard 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. In addition, the one or

more memories

104, 204 may be connected to the one or

more processors

102, 202 through various techniques such as wired or wireless connection.

The one or

more transceivers

106 and 206 may transmit user data, control information, radio signals/channels, and the like mentioned in the methods and/or operation flow charts of this document to one or more other devices. One or more transceivers (106, 206) may receive user data, control information, radio signals/channels, etc. mentioned in the description, functions, procedures, proposals, methods and/or operation flowcharts disclosed in this document from one or more other devices. have. For example, one or

more transceivers

106 and 206 may be connected to one or

more processors

102 and 202, and may transmit and receive wireless signals. For example, one or

more processors

102, 202 may control one or

more transceivers

106, 206 to transmit user data, control information, or radio signals to one or more other devices. In addition, one or

more processors

102, 202 may control one or

more transceivers

106, 206 to receive user data, control information, or radio signals from one or more other devices. In addition, one or more transceivers (106, 206) may be connected with one or more antennas (108, 208), and one or more transceivers (106, 206) through one or more antennas (108, 208), the description and functionality disclosed in this document. It may be set to transmit and receive user data, control information, radio signals/channels, and the like mentioned in a procedure, a proposal, a method and/or an operation flowchart. In this document, one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports). One or more transceivers (106, 206) in order to process the received user data, control information, radio signal / channel, etc. using one or more processors (102, 202), the received radio signal / channel, etc. in the RF band signal. It can be converted into a baseband signal. One or

more transceivers

106 and 206 may convert user data, control information, radio signals/channels, etc. processed using one or

more processors

102 and 202 from a baseband signal to an RF band signal. To this end, one or

more transceivers

106, 206 may include (analog) oscillators and/or filters.

본 발명이 적용되는 신호 처리 회로 예Signal processing circuit example to which the present invention is applied

17 illustrates a signal processing circuit for a transmission signal.

Referring to FIG. 17, the signal processing circuit 2000 may include a scrambler 2010, a modulator 2020, a layer mapper 2030, a precoder 2040, a resource mapper 2050, and a signal generator 2060. have. Although not limited thereto, the operations/functions of FIG. 17 may be performed in the

processors

102 and 202 of FIG. 16 and/or the

transceivers

106 and 206 of FIG. The hardware elements of FIG. 17 may be implemented in the

processors

102 and 202 and/or the

transceivers

106 and 206 of FIG. 16. For example, blocks 2010 to 2060 may be implemented in the

processors

102 and 202 of FIG. 16. Also, blocks 2010 to 2050 may be implemented in the

processors

102 and 202 of FIG. 16, and block 2060 may be implemented in the

transceivers

106 and 206 of FIG. 16.

The codeword may be converted into a wireless signal through the signal processing circuit 2000 of FIG. 17. Here, the codeword is an encoded bit sequence of an information block. The information block may include a transport block (eg, a UL-SCH transport block, a DL-SCH transport block). The radio signal may be transmitted through various physical channels (eg, PUSCH, PDSCH).

Specifically, the codeword may be converted into a scrambled bit sequence by the scrambler 2010. The scramble sequence used for scramble is generated based on an initialization value, and the initialization value may include ID information of a wireless device. The scrambled bit sequence may be modulated into a modulation symbol sequence by the modulator 2020. The modulation scheme may include pi/2-Binary Phase Shift Keying (pi/2-BPSK), m-Phase Shift Keying (m-PSK), m-Quadrature Amplitude Modulation (m-QAM), and the like. The complex modulation symbol sequence may be mapped to one or more transport layers by the layer mapper 2030. The modulation symbols of each transport layer may be mapped to the corresponding antenna port(s) by the precoder 2040 (precoding). The output z of the precoder 2040 can be obtained by multiplying the output y of the layer mapper 2030 by an N*M precoding matrix W. Here, N is the number of antenna ports, and M is the number of transmission layers. Here, the precoder 2040 may perform precoding after performing transform precoding (eg, DFT transform) on complex modulation symbols. Also, the precoder 2040 may perform precoding without performing transform precoding.

The resource mapper 2050 may map modulation symbols of each antenna port to a time-frequency resource. The time-frequency resource may include a plurality of symbols (eg, CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain, and may include a plurality of subcarriers in the frequency domain. The signal generator 2060 generates a radio signal from the mapped modulation symbols, and the generated radio signal may be transmitted to another device through each antenna. To this end, the signal generator 2060 may include an Inverse Fast Fourier Transform (IFFT) module and a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, and the like. .

The signal processing process for the received signal in the wireless device may be configured as the reverse of the signal processing process 2010 to 2060 of FIG. 17. For example, a wireless device (eg, 100 and 200 in FIG. 16) may receive a wireless signal from the outside through an antenna port/transmitter. The received radio signal may be converted into a baseband signal through a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP canceller, and a Fast Fourier Transform (FFT) module. Thereafter, the baseband signal may be reconstructed into a codeword through a resource de-mapper process, a postcoding process, a demodulation process, and a de-scramble process. The codeword may be restored to an original information block through decoding. Accordingly, a signal processing circuit (not shown) for a received signal may include a signal restorer, a resource demapper, a postcoder, a demodulator, a descrambler, and a decoder.

본 발명이 적용되는 무선 기기 활용 예Wireless device application example to which the present invention is applied

18 shows another example of a wireless device applied to the present invention. The wireless device may be implemented in various forms according to use-examples/services (see FIG. 15).

Referring to FIG. 18, the

wireless devices

1510 and 1520 correspond to the

wireless devices

1510 and 1520 of FIG. 14, and various elements, components, units/units, and/or modules It can be composed of (module). For example, the

wireless devices

1510 and 1520 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional element 140. The communication unit may include a communication circuit 112 and a transceiver(s) 114. For example, the communication circuit 112 may include one or

more processors

102 and 202 and/or one or

more memories

104 and 204 of FIG. 16. For example, the transceiver(s) 114 may include one or more transceivers 106,206 and/or one or more antennas 108,208 of FIG. 16. The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140 and controls all operations of the wireless device. For example, the controller 120 may control the electrical/mechanical operation of the wireless device based on the program/code/command/information stored in the memory unit 130. In addition, the control unit 120 transmits the information stored in the memory unit 130 to an external (eg, other communication device) through the communication unit 110 through a wireless/wired interface, or through the communication unit 110 to the outside (eg, Information received through a wireless/wired interface from another communication device) may be stored in the memory unit 130.

The additional element 140 may be variously configured according to the type of wireless device. For example, the additional element 140 may include at least one of a power unit/battery, an I/O unit, a driving unit, and a computing unit. Although not limited to this, wireless devices include robots (Figs. 15 and 1510a), vehicles (Figs. 15, 1510b-1, 1510b-2), XR devices (Figs. 15 and 1510c), portable devices (Figs. (FIGS. 15, 1510e), IoT devices (FIGS. 15, 1510f), digital broadcasting terminals, hologram devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate/environment devices, It may be implemented in the form of an AI server/device (FIGS. 15 and 400), a base station (FIGS. 15 and 1520), and a network node. The wireless device can be used in a mobile or fixed place depending on the use-example/service.

In FIG. 18, various elements, components, units/units, and/or modules in the

wireless devices

1510 and 1520 may be connected to each other through a wired interface, or at least part of them may be wirelessly connected through the communication unit 110. For example, in the

wireless devices

1510 and 1520, the control unit 120 and the communication unit 110 are connected by wire, and the control unit 120 and the first unit (eg, 130, 140) are connected through the communication unit 110. Can be connected wirelessly. In addition, each element, component, unit/unit, and/or module in the

wireless device

1510 and 1520 may further include one or more elements. For example, the controller 120 may be configured with one or more processor sets. For example, the control unit 120 may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing processor, and a memory control processor. As another example, the memory unit 130 is a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, and a non-volatile memory. volatile memory) and/or a combination thereof.

본 발명이 적용되는 휴대 기기 예Examples of portable devices to which the present invention is applied

19 illustrates a portable device applied to the present invention. Portable devices may include smart phones, smart pads, wearable devices (eg, smart watches, smart glasses), and portable computers (eg, notebook computers). The portable device may 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).

Referring to FIG. 19, the portable device 1510 includes 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 input/output unit 140c. ) Can be included. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 to 130/140a to 140c correspond to blocks 110 to 130/140 of FIG. 18, respectively.

The communication unit 110 may transmit and receive signals (eg, data, control signals, etc.) with other wireless devices and base stations. The controller 120 may perform various operations by controlling components of the portable device 1510. The control unit 120 may include an application processor (AP). The memory unit 130 may store data/parameters/programs/codes/commands required for driving the portable device 1510. In addition, the memory unit 130 may store input/output data/information, and the like. The power supply unit 140a supplies power to the portable device 1510 and may include a wired/wireless charging circuit, a battery, and the like. The interface unit 140b may support connection between the portable device 1510 and other external devices. The interface unit 140b may include various ports (eg, audio input/output ports, video input/output ports) for connection with external devices. The input/output unit 140c may receive or output image information/signal, audio information/signal, data, and/or information input from a user. The input/output unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and/or a haptic module.

For example, in the case of data communication, the input/output unit 140c acquires information/signals (eg, touch, text, voice, image, video) input from the user, and the obtained information/signals are stored in the memory unit 130. Can be saved. The communication unit 110 may convert information/signals stored in the memory into wireless signals, and may directly transmit the converted wireless signals to other wireless devices or to a base station. In addition, after receiving a radio signal from another radio device or a base station, the communication unit 110 may restore the received radio signal to the original information/signal. After the restored information/signal is stored in the memory unit 130, it may be output in various forms (eg, text, voice, image, video, heptic) through the input/output unit 140c.

The embodiments described above are those in which components and features of the present invention are combined in a predetermined form. Each component or feature should be considered optional unless explicitly stated otherwise. Each component or feature may be implemented in a form that is not combined with other components or features. In addition, it is also possible to configure an embodiment of the present invention by combining some components and/or features. The order of the operations described in the embodiments of the present invention can be changed. Some configurations or features of one embodiment may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments. It is apparent that claims that do not have an explicit citation relationship in the claims can be combined to form an embodiment or included as a new claim by amendment after filing.

The embodiment according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. For implementation by hardware, one embodiment of the invention is one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, procedure, or function that performs the functions or operations described above. The software code can be stored in a memory and driven by a processor. The memory may be located inside or outside the processor, and may exchange data with the processor through various known means.

It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the essential features of the present invention. Therefore, the above detailed description should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

The method of performing uplink transmission in the wireless communication system of the present invention has been described centering on an example applied to a 3GPP LTE/LTE-A system and a 5G system (New RAT system), but it can be applied to various wireless communication systems. Do.

Claims

In a method for a user equipment (UE) to transmit an uplink data channel in a wireless communication system,

Receiving configuration information related to the uplink data channel;

Receiving downlink control information for scheduling transmission of the uplink data channel;

Including the step of transmitting the uplink data channel based on the downlink control information,

The downlink control information includes i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam,

The first information and the second information are each based on a first field and a second field in the downlink control information.
According to claim 1,

The first information, characterized in that it comprises a transmission unit identifier (transmission unit identifier) mapped to the code value (codepoint) of the first field.
According to claim 1,

The method according to claim 1, wherein the beam based on the second information is one of one or more beams associated with a transmission unit based on the first information.
According to claim 3,

The transmission unit is set in a unit of an SRS resource set related to transmission of the uplink data channel through higher layer signaling.
The method of claim 4,

The SRS resource associated with the beam is one of one or more SRS resources included in an SRS resource set associated with the transmission unit.
According to claim 1,

The second field is an SRS Resource Indicator (SRI) field indicating an SRS resource related to transmission of the uplink data channel.
According to claim 1,

Further comprising the step of transmitting information on the maximum number of transmission units supported by the terminal to the base station,

Based on the maximum number, one or more transmission units supported by the terminal are sequentially mapped to code values of the first field.
In a user equipment (UE) transmitting an uplink data channel in a wireless communication system, the terminal,

One or more transceivers;

One or more processors; And

Store instructions for operations executed by the one or more processors, and include one or more memories connected to the one or more processors,

The above operations,

Receiving configuration information related to the uplink data channel;

Receiving downlink control information for scheduling transmission of the uplink data channel;

Including the step of transmitting the uplink data channel based on the downlink control information,

The downlink control information includes i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam,

Wherein the first information and the second information are based on a first field and a second field in the downlink control information, respectively.
The method of claim 8,

Wherein the first information includes a transmission unit identifier mapped to a codepoint of the first field.
The method of claim 8,

The terminal, wherein the beam based on the second information is one of one or more beams associated with a transmission unit based on the first information.
The method of claim 10,

The transmission unit, wherein the transmission unit is set in a unit of an SRS resource set related to transmission of the uplink data channel through higher layer signaling.
The method of claim 11,

The SRS resource associated with the beam is one of one or more SRS resources included in an SRS resource set associated with the transmission unit.
The method of claim 8,

Wherein the second field is an SRS Resource Indicator (SRI) field indicating an SRS resource related to transmission of the uplink data channel.
The method of claim 8,

The operations further include transmitting information on the maximum number of transmission units supported by the terminal to a base station,

Based on the maximum number, one or more transmission units supported by the terminal are sequentially mapped to code values of the first field.
In a method for a base station (BS) to receive an uplink data channel in a wireless communication system,

Transmitting configuration information related to the uplink data channel;

Transmitting downlink control information for scheduling transmission of the uplink data channel;

Including the step of receiving the uplink data channel transmitted based on the downlink control information,

The downlink control information includes i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam,

The first information and the second information are each based on a first field and a second field in the downlink control information.
In a base station (BS) receiving an uplink data channel in a wireless communication system, the base station,

One or more transceivers;

One or more processors; And

Store instructions for operations executed by the one or more processors, and include one or more memories connected to the one or more processors,

The above operations,

Transmitting configuration information related to the uplink data channel;

Transmitting downlink control information for scheduling transmission of the uplink data channel;

Including the step of receiving the uplink data channel based on the downlink control information,

The downlink control information includes i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam,

The base station, wherein the first information and the second information are based on a first field and a second field in the downlink control information, respectively.
An apparatus comprising one or more memories and one or more processors functionally connected to the one or more memories, the apparatus comprising:

The one or more processors are the device,

Receiving configuration information related to the uplink data channel;

Receiving downlink control information for scheduling transmission of the uplink data channel;

Based on the downlink control information, controlling to transmit the uplink data channel,

The downlink control information includes i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam,

The first information and the second information are each based on a first field and a second field in the downlink control information.
In one or more non-transitory computer-readable medium storing one or more instructions, wherein the one or more instructions are executable by one or more processors,

A user equipment receives configuration information related to the uplink data channel;

The terminal receives downlink control information for scheduling transmission of the uplink data channel;

Controlling the terminal to transmit the uplink data channel based on the downlink control information,

The downlink control information includes i) first information indicating a transmission unit related to transmission of the uplink data channel and ii) second information indicating a beam,

The first information and the second information are each based on a first field and a second field in the downlink control information.