Method performed by user equipment, user equipment, processing device and storage medium, and method performed by base station, and base station

Abstract

This user equipment can determine a PUCCH resource for the transmission of uplink control information (UCI), and acquire modulation symbols of a second modulation order higher than a first modulation order according to the UCI on the basis that a coding rate R calculated on the basis of the first modulation order and N resource blocks exceeds a maximum coding rate Rmax configured for the PUCCH resource.

Description

Method performed by a user device, user device, processing device and storage medium, and method performed by a base station and base station

[0001] This specification relates to wireless communication systems.

[0002] Various devices and technologies, such as machine-to-machine (M2M) communication, machine-type communication (MTC), and smartphones and tablet PCs (personal computers) that require high data transmission rates, are emerging and becoming widespread. Consequently, the amount of data required to be processed on cellular networks is rapidly increasing. To meet this rapidly increasing data processing demand, technologies such as carrier aggregation and cognitive radio are being developed to efficiently utilize more frequency bands, while multi-antenna technology and multi-BS cooperation technology are being developed to increase the data capacity transmitted within a limited frequency range.

[0003] As more and more communication devices demand greater capacity, the need for enhanced mobile broadband (eMBB) communications is emerging, surpassing legacy radio access technology (RAT). Furthermore, massive machine type communication (mMTC), which connects multiple devices and objects to provide diverse services anytime, anywhere, is a key issue to be considered in next-generation communications.

[0004] Additionally, discussions are underway on communication systems designed to accommodate reliability- and latency-sensitive services and user equipment (UE). The introduction of next-generation wireless access technologies is being discussed, including enhanced mobile broadband (eMBB), mMTC, and ultra-reliable and low latency communication (URLLC).

[0005] One technical task of this specification is to provide methods and / or processes for improving resource efficiency for a control channel carrying control information.

[0006] Another technical challenge of this specification is to provide methods and / or processes that enable applying higher order modulation schemes to control information.

[0007] The technical tasks to be achieved by this specification are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art related to this specification from the detailed description below.

[0008] In one aspect of the present disclosure, a method by a user device is provided. In another aspect of the present disclosure, the user device is provided, comprising: at least one transceiver; at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations. In another aspect of the present disclosure, a processing device is provided, comprising: at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations. In another aspect of the present disclosure, a computer-readable, non-transitory storage medium is provided, storing at least one program code comprising instructions that, when executed, cause the at least one processor to perform operations. The method or the operations are: a method performed by the UE, or in the UE, the processing device, the computer-readable (non-transitory) storage medium, and / or the computer program product, the operations include: receiving a configuration regarding at least one physical uplink control channel (PUCCH) resource; determining a PUCCH resource for transmission of uplink control information (UCI) based on the configuration; and determining a coding rate R calculated based on a first modulation order and N resource blocks, wherein the coding rate R is a maximum coding rate R set for the PUCCH resource. maxBased on the UCI exceeding, obtaining modulation symbols of a second modulation order higher than the first modulation order, wherein N is the number of resource blocks set for the PUCCH resource; and transmitting the modulation symbols of the second modulation order.

[0009] In each aspect of this specification, the method or the operations: the coding rate R is the maximum coding rate R set for the PUCCH resource max Based on not exceeding the UCI, obtaining modulation symbols of the first modulation order; and transmitting the modulation symbols of the first modulation order.

[0010] In one aspect of the present disclosure, a method by a base station is provided. In another aspect of the present disclosure, a base station is provided, comprising: at least one transceiver; at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations. The method or the operations include: transmitting a configuration regarding at least one physical uplink control channel (PUCCH) resource; determining a PUCCH resource for receiving uplink control information (UCI) based on the configuration; and determining a coding rate R calculated based on a first modulation order and N resource blocks, the coding rate R being greater than a maximum coding rate R set for the PUCCH resource. max Based on the exceeding, it includes receiving modulation symbols of a second modulation order higher than the first modulation order as the UCI, where N is the number of resource blocks set for the PUCCH resource.

[0011] In each aspect of this specification, the method or the operations: the coding rate R is the maximum coding rate R set for the PUCCH resource max Based on not exceeding , it may include receiving modulation symbols of the first modulation order as the UCI.

[0012] In each aspect of the present specification, the modulation symbols of the second modulation order can be mapped within the N resource blocks.

[0013] In each aspect of the present specification, the modulation symbols of the second modulation order may be cyclically mapped within the N resource blocks.

[0014] In each aspect of the present specification, the modulation symbols of the second modulation order may be mapped once within the N resource blocks, and no symbol may be mapped to resource elements available for the UCI within the N resource blocks to which the modulation symbols of the second modulation order are not mapped and remain.

[0015] In each aspect of the present specification, the modulation symbols of the second modulation order are mapped to N_min resource blocks, where N_min may be the minimum number of resource blocks to which all the modulation symbols of the second modulation order are mapped.

[0016] In each aspect of this specification, the second modulation order is such that the coding rate of the UCI based on the N resource blocks is the maximum coding rate R. max It may be the minimum modulation order that does not exceed .

[0017] In each aspect of this specification, the first modulation order may be a value associated with quadrature phase shift keying (QPSK).

[0018] In each aspect of this specification, the second modulation order may be applied to a specific type of UCI among different types of UCI within the UCI.

[0019] In each aspect of this specification, the specific type of UCI may be channel state information (CSI) Part 2.

[0020] The above problem solving methods are only some of the examples of this specification, and various examples reflecting the technical features of this specification can be derived and understood by a person having ordinary knowledge in the relevant technical field based on the detailed description below.

[0021] According to some implementations of this specification, methods and / or processes may be provided to improve resource efficiency for a control channel carrying control information.

[0022] According to some implementations of this specification, methods and / or processes may be provided that enable applying higher order modulation schemes to control information.

[0023] The effects according to this specification are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art related to this specification from the detailed description below.

[0024] To aid in understanding implementations of this specification, the accompanying drawings, which are included as part of the detailed description, provide examples of implementations of this specification and, together with the detailed description, illustrate implementations of this specification:

[0025] Figure 1 illustrates an example of a communication system 1 to which implementations of the present specification are applied;

[0026] FIG. 2 is a block diagram illustrating examples of communication devices capable of performing a method according to the present specification;

[0027] FIG. 3 illustrates another example of a wireless device capable of performing implementation(s) of the present specification;

[0028] FIG. 4 illustrates an example of a frame structure available in a 3rd generation partnership project (3GPP) based wireless communication system;

[0029] Figure 5 illustrates a resource grid of slots;

[0030] FIG. 6 illustrates physical channels used in a 3rd generation partnership project (3GPP)-based communication system, which is an example of a wireless communication system, and a signal transmission / reception process using the channels;

[0031] Figure 7 illustrates the flow of a process related to channel state information (CSI).

[0032] FIG. 8 illustrates an example of time domain resource allocation of a physical downlink shared channel (PDSCH) by a physical downlink control channel (PDCCH) and an example of time domain resource allocation of a physical uplink shared channel (PUSCH) by a PDCCH;

[0033] Figure 9 illustrates a processing process on the transmission side for a transport block (TB);

[0034] FIG. 10 is a part of a physical uplink control channel (PUCCH) configuration provided by upper layer signaling;

[0035] FIG. 11 illustrates the flow of uplink control information transmission in a UE according to some implementations of the present specification;

[0036] Figure 12 illustrates the flow of receiving uplink control information at a BS according to some implementations of this specification.

[0037] Hereinafter, implementations according to this specification will be described in detail with reference to the attached drawings. The detailed description provided below, together with the attached drawings, is intended to describe exemplary implementations of this specification and is not intended to represent the only possible implementations of this specification. The detailed description below includes specific details to provide a thorough understanding of this specification. However, one of ordinary skill in the art will appreciate that this specification may be practiced without these specific details.

[0038] In some cases, to avoid ambiguity in the concepts of this specification, known structures and devices may be omitted or illustrated in block diagram form focusing on the core functions of each structure and device. Furthermore, identical components are described using the same drawing reference numerals throughout this specification.

[0039] In this specification, "A or B" can mean "only A", "only B", or "both A and B". In other words, in this specification, "A or B" can be interpreted as "A and / or B". For example, in this specification, "A, B or C" can mean "only A", "only B", "only C", or "any combination of A, B and C".

[0040] The slash ( / ) or comma used in this specification can mean "and / or." For example, "A / B" can mean "A and / or B." Accordingly, "A / B" can mean "only A," "only B," or "both A and B." For example, "A, B, C" can mean "A, B, or C."

[0041] In this specification, "at least one of A and B" may mean "only A", "only B" or "both A and B". Additionally, in this specification, the expressions "at least one of A or B" or "at least one of A and / or B" may be interpreted identically to "at least one of A and B".

[0042] Additionally, in this specification, “at least one of A, B and C” can mean “only A”, “only B”, “only C”, or “any combination of A, B and C”. Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C”.

[0043] Additionally, in this specification, terms such as “first,” “second,” etc. are used only to distinguish one component from another and are not used to limit the components, and do not limit the order or importance between the components unless specifically limited. Accordingly, a first component in one embodiment of this specification may be referred to as a second component in another embodiment, and similarly, a second component in one embodiment may be referred to as a first component in another embodiment.

[0044] In the following explanation, ‘when ~, if ~, in case of ~’ can be replaced with ‘based on ~.’

[0045] In this specification, higher layer parameters can be configured, preset, or predefined for the UE. For example, the BS can transmit higher layer parameter(s) to the UE. For example, the UE can transmit parameters such as capabilities to the BS as higher layer parameters. For example, the higher layer parameters can be transmitted via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0046] In this specification, "configured or pre-configured" information / state / parameters can be interpreted as information / state / parameters being provided / pre-provided to the UE through pre-defined signaling from the BS (e.g., system information block (SIB), medium access control (MAC), radio resource control (RRC)). In this specification, "defined or pre-defined" information / state / parameters can be interpreted as information that the BS and the UE know in advance or pre-store without signaling between the BS and the UE.

[0047] Technical features individually described within a single drawing in this specification may be implemented individually or simultaneously.

[0048] The techniques, devices, and systems described below can be applied to various wireless multiple access systems. Examples of multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and multi-carrier frequency division multiple access (MC-FDMA) systems. CDMA can be implemented in wireless technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented in wireless technologies such as Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), and Enhanced Data Rates for GSM Evolution (EDGE) (i.e., GERAN). OFDMA can be implemented in wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (WiFi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (evolved-UTRA). UTRA is part of UMTS (Universal Mobile Telecommunication System), and 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) is a part of E-UMTS that uses E-UTRA.3GPP LTE adopts OFDMA for the downlink (DL) and SC-FDMA for the uplink (UL). LTE-A (LTE-advanced) is an evolved form of 3GPP LTE.

[0049] For convenience of explanation, the following description assumes that this specification applies to 3GPP-based communication systems, such as LTE and NR. However, the technical features of this specification are not limited to this. For example, although the detailed description below is based on a mobile communication system corresponding to a 3GPP LTE / NR system, it can also be applied to any other mobile communication system, except for features specific to 3GPP LTE / NR.

[0050] For terms and technologies used in this specification that are not specifically explained, reference may be made to 3GPP-based standard documents, such as 3GPP TS 36.211, 3GPP TS 36.212, 3GPP TS 36.213, 3GPP TS 36.321, 3GPP TS 36.300 and 3GPP TS 36.331, 3GPP TS 37.213, 3GPP TS 38.211, 3GPP TS 38.212, 3GPP TS 38.213, 3GPP TS 38.214, 3GPP TS 38.300, 3GPP TS 38.304, 3GPP TS 38.331, etc.

[0051] In the examples of this specification described below, the expression "assumes" that a device "assumes" that the entity transmitting the channel transmits the channel in a manner consistent with the "assume." The entity receiving the channel may mean that, under the assumption that the channel was transmitted in a manner consistent with the "assume," the entity receiving the channel receives or decodes the channel in a manner consistent with the "assume."

[0052] In this specification, UE may be fixed or mobile, and includes various devices that communicate with a BS (base station) to transmit and / or receive user data and / or various control information. UE may be called (Terminal Equipment), MS (Mobile Station), MT (Mobile Terminal), UT (User Terminal), SS (Subscribe Station), wireless device, PDA (Personal Digital Assistant), wireless modem, handheld device, etc. In addition, in this specification, BS generally refers to a fixed station that communicates with UE and / or other BS, and exchanges various data and control information with UE and other BS. BS may be called by other terms such as ABS (Advanced Base Station), NB (Node-B), eNB (evolved-NodeB), BTS (Base Transceiver System), Access Point, PS (Processing Server), etc. In particular, the BS in UTRAN is called a Node-B, the BS in E-UTRAN is called an eNB, and the BS in a new radio access technology network is called a gNB. For convenience of explanation, BSs are collectively referred to as BSs below, regardless of the type or version of communication technology.

[0053] In this specification, a node refers to a fixed point that can transmit / receive radio signals by communicating with a UE. Various types of BSs can be used as nodes regardless of their names. For example, BSs, NBs, eNBs, pico-cell eNBs (PeNBs), home eNBs (HeNBs), relays, and repeaters can be nodes. Furthermore, a node may not be a BS. For example, it can be a radio remote head (RRH) or a radio remote unit (RRU). RRHs, RRUs, etc. generally have a lower power level than the BS. Since an RRH or RRU (hereinafter referred to as RRH / RRU) is generally connected to a BS via a dedicated line such as an optical cable, cooperative communication between an RRH / RRU and a BS can be performed more smoothly than cooperative communication between BSs that are generally connected via a wireless line. Each node is equipped with at least one antenna. The antenna may be a physical antenna, an antenna port, a virtual antenna, or an antenna group. A node is also called a point.

[0054] In this specification, a cell refers to a certain geographical area where one or more nodes provide communication services. Therefore, in this specification, communicating with a specific cell may mean communicating with a BS or node that provides communication services to the specific cell. In addition, the downlink / uplink signal of a specific cell refers to a downlink / uplink signal from / to a BS or node that provides communication services to the specific cell. A cell that provides uplink / downlink communication services to a UE is specifically referred to as a serving cell. In addition, the channel state / quality of a specific cell refers to the channel state / quality of a channel or communication link formed between a BS or node that provides communication services to the specific cell and the UE. In a 3GPP-based communication system, a UE can measure a downlink channel state from a specific node using CRS (Cell-specific Reference Signal) resources transmitted by antenna port(s) of the specific node on CRS resources allocated to the specific node and / or CSI-RS (Channel State Information Reference Signal) resources transmitted.

[0055] Meanwhile, 3GPP-based communication systems use the concept of cells to manage radio resources, and cells associated with radio resources are distinguished from cells in geographical areas.

[0056] A "cell" in a geographical area can be understood as the coverage over which a node can provide a service using a carrier, and a "cell" in a radio resource is associated with a bandwidth (BW), which is a frequency range configured by the carrier. Since downlink coverage, which is the range over which a node can transmit a valid signal, and uplink coverage, which is the range over which a node can receive a valid signal from a UE, depend on the carrier carrying the signal, the coverage of a node is also associated with the coverage of the "cell" of the radio resource used by the node. Therefore, the term "cell" can sometimes be used to mean the coverage of a service by a node, sometimes a radio resource, and sometimes the range over which a signal using the radio resource can reach with a valid intensity.

[0057] Meanwhile, the 3GPP communication standard uses the concept of a cell to manage radio resources. A "cell" associated with radio resources is defined as a combination of downlink resources (DL resources) and uplink resources (UL resources), i.e., a combination of a DL component carrier (CC) and an UL CC. A cell can be configured with DL resources alone or a combination of DL resources and UL resources. If carrier aggregation is supported, the linkage between the carrier frequency of the DL resources (or DL ​​CC) and the carrier frequency of the UL resources (or UL CC) can be indicated by system information. For example, the combination of DL resources and UL resources can be indicated by a System Information Block Type 2 (SIB2) linkage. Here, the carrier frequency can be the same as or different from the center frequency of each cell or CC. When carrier aggregation (CA) is established, the UE has only one radio resource control (RRC) connection with the network. One serving cell provides non-access stratum (NAS) mobility information during RRC connection establishment / re-establishment / handover, and one serving cell provides security input during RRC connection re-establishment / handover. Such a cell is called a primary cell (Pcell). A Pcell is a cell operating on the primary frequency where the UE performs initial connection establishment procedures or initiates connection re-establishment procedures.Depending on the UE capability, secondary cells (Scells) can be configured to form a set of serving cells together with Pcells. An Scell ​​can be configured after an RRC (Radio Resource Control) connection establishment has been made, and is a cell that provides additional radio resources in addition to the resources of a special cell (SpCell). The carrier corresponding to a Pcell in downlink is called a downlink primary CC (DL PCC), and the carrier corresponding to a Pcell in uplink is called an UL primary CC (UL PCC). The carrier corresponding to an Scell ​​in downlink is called a DL secondary CC (DL SCC), and the carrier corresponding to the Scell ​​in uplink is called an UL secondary CC (UL SCC).

[0058] For a UE for which CA is set and DC is not set, a Pcell PUCCH group (also referred to as a primary PUCCH group) consisting of a Pcell and zero or more Scells and a Scell ​​PUCCH group (also referred to as a secondary PUCCH group) consisting of only Scell(s) may be set. In the case of an Scell, an Scell ​​(hereinafter referred to as a PUCCH Scell) on which a PUCCH associated with the cell is transmitted may be set. An Scell ​​for which a PUCCH Scell ​​is indicated belongs to an Scell ​​PUCCH group (i.e., a secondary PUCCH group), and PUCCH transmission of the relevant UCI is performed on the PUCCH Scell, and an Scell ​​for which a PUCCH Scell ​​is not indicated or which is a Pcell and is indicated as a cell for PUCCH transmission belongs to a Pcell PUCCH group (i.e., a primary PUCCH group), and PUCCH transmission of the relevant UCI is performed on the Pcell. Hereinafter, if a UE is configured with an SCG and some implementations of this specification related to PUCCH are applied to the SCG, the primary cell may refer to a PSCell of the SCG. If a UE is configured with a PUCCH Scell ​​and some implementations of this specification related to PUCCH are applied to a secondary PUCCH group, the primary cell may refer to a PUCCH Scell ​​of the secondary PUCCH group.

[0059] In a wireless communication system, a UE receives information from a base station (BS) via the downlink (DL), and the UE transmits information to the base station via the uplink (UL). The information transmitted and / or received by the BS and UE includes data and various control information, and various physical channels exist depending on the type and purpose of the information they transmit and / or receive.

[0060] 3GPP-based communication standards define downlink physical channels corresponding to resource elements that carry information originating from higher layers, and downlink physical signals corresponding to resource elements that are used by the physical layer but do not carry information originating from higher layers. For example, the physical downlink shared channel (PDSCH), physical broadcast channel (PBCH), and physical downlink control channel (PDCCH) are defined as downlink physical channels, and reference signals and synchronization signals are defined as downlink physical signals. A reference signal (RS), also referred to as a pilot, refers to a signal with a predefined special waveform that is known to the BS and the UE. For example, the demodulation reference signal (DMRS), the channel state information RS (CSI-RS), and the positioning reference signal (PRS) are defined as downlink reference signals. 3GPP-based communication standards define uplink physical channels corresponding to resource elements that carry information originating from higher layers, and uplink physical signals corresponding to resource elements that are used by the physical layer but do not carry information originating from higher layers.For example, a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a physical random access channel (PRACH) are defined as uplink physical channels, and a demodulation reference signal (DMRS) for uplink control / data signals and a sounding reference signal (SRS) used for uplink channel measurement are defined.

[0061] In this specification, PDCCH (Physical Downlink Control CHannel) refers to a set of time-frequency resources (e.g., resource elements (REs)) that carry DCI (Downlink Control Information), and PDSCH (Physical Downlink Shared CHannel) refers to a set of time-frequency resources that carry downlink data. In addition, PUCCH (Physical Uplink Control CHannel), PUSCH (Physical Uplink Shared CHannel), and PRACH (Physical Random Access CHannel) refer to sets of time-frequency resources that carry UCI (Uplink Control Information), uplink data, and random access signals, respectively (respectively). Hereinafter, the expression that a user equipment transmits / receives a PUCCH / PUSCH / PRACH is used with the same meaning as that uplink control information / uplink data / random access signals are transmitted / received on or through the PUCCH / PUSCH / PRACH, respectively. Additionally, the expression that BS transmits / receives PBCH / PDCCH / PDSCH is used with the same meaning as transmitting broadcast information / downlink control information / downlink data on or through PBCH / PDCCH / PDSCH, respectively.

[0062] In this specification, radio resources (e.g., time-frequency resources) scheduled or configured by the BS to the UE for transmission or reception of PUCCH / PUSCH / PDSCH are also referred to as PUCCH / PUSCH / PDSCH resources.

[0063] Since the communication device receives a synchronization signal (SS), DMRS, CSI-RS, PRS, PBCH, PDCCH, PDSCH, PUSCH, and / or PUCCH in the form of radio signals on a cell, it cannot selectively receive through an RF receiver only radio signals including only a specific physical channel or only a specific physical signal, or selectively receive through an RF receiver only radio signals excluding only a specific physical channel or only a physical signal. In actual operation, the communication device first receives radio signals on a cell through an RF receiver, converts the radio signals, which are RF band signals, into baseband signals, and decodes a physical signal and / or a physical channel within the baseband signals using one or more processors. Thus, in some implementations of the present specification, not receiving a physical signal and / or a physical channel may not actually mean that the communication device does not receive wireless signals containing the physical signal and / or physical channel at all, but rather that it does not attempt to recover the physical signal and / or physical channel from the wireless signals, e.g., does not attempt to decode the physical signal and / or the physical channel.

[0064] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing radio access technology (RAT) is emerging. Furthermore, massive MTC, which connects numerous devices and objects to provide diverse services anytime, anywhere, is also a key issue to be considered in next-generation communications. Furthermore, communication system design that considers reliability and latency-sensitive services / UEs is being discussed. The introduction of next-generation RATs that take advanced mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) into account is being discussed. Currently, 3GPP is conducting studies on next-generation mobile communication systems beyond EPC. For convenience, this technology is referred to as new RAT (NR) or 5G RAT, and a system that uses or supports NR is referred to as an NR system.

[0065] FIG. 1 illustrates an example of a communication system 1 to which implementations of the present specification are applied. Referring to FIG. 1, the communication system (1) applied to the present specification includes a wireless device, a BS, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (e.g., E-UTRA)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, digital signage, a vehicle, a robot, etc. Mobile devices may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), etc. Home appliances may include a TV, a refrigerator, a washing machine, etc. IoT devices may include sensors, smart meters, etc. For example, a BS or network may also be implemented as a wireless device, and a specific wireless device may act as a BS / network node to other wireless devices.

[0066] Wireless devices (100a to 100f) can be connected to a network (300) via a BS (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via a network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the BS (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the BS / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0067] Wireless communication / connection (150a, 150b) can be performed between wireless devices (100a~100f) / BS (200) - BS (200) / wireless devices (100a~100f). Here, the wireless communication / connection can be performed through various wireless access technologies (e.g., 5G NR) for uplink / downlink communication (150a) and sidelink communication (150b) (or D2D communication). Through the wireless communication / connection (150a, 150b), the wireless device and the BS / wireless device can transmit / receive wireless signals to / from each other. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of this specification.

[0068] FIG. 2 is a block diagram illustrating examples of communication devices capable of performing a method according to the present specification. Referring to FIG. 2, a first wireless device (100) and a second wireless device (200) can transmit and / or receive wireless signals via various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the BS (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 1.

[0069] A first wireless device (100) 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 memories (104) and / or the transceivers (106), and may be configured to implement functions, procedures, and / or methods described / suggested below. For example, the processor (102) may process information in the memory (104) to generate first information / signals, and then transmit a wireless signal including the first information / signals via the transceivers (106). In addition, the processor (102) may receive a wireless signal including second information / signals via the transceivers (106), and then store information obtained from signal processing of the second information / signals in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the procedures and / or methods described / proposed below. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In this specification, a wireless device may also mean a communication modem / circuit / chip.

[0070] The second wireless device (200) includes one or more processors (202), 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 memories (204) and / or the transceivers (206), and may be configured to implement the functions, procedures, and / or methods described / suggested below. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). In addition, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the procedures and / or methods described / proposed below. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via 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 this specification, a wireless device may also mean a communication modem / circuit / chip.

[0071] The wireless communication technology implemented in the wireless device (100, 200) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0072] Hereinafter, hardware elements of the wireless device (100, 200) 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 (e.g., functional layers such as a physical (PHY) layer, a medium access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer, and a service data adaptation protocol (SDAP) layer). One or more processors (102, 202) may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the functions, procedures, proposals, and / or methods disclosed in this specification. One or more processors (102, 202) may generate messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed in this specification. One or more processors (102, 202) may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed in this specification, and provide the signals 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 obtain PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed in this specification.

[0073] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 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, 202). The functions, procedures, proposals, and / or methods disclosed in this specification may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. Firmware or software configured to perform the functions, procedures, suggestions and / or methods disclosed in this specification may be included in one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The functions, procedures, suggestions and / or methods disclosed in this specification may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0074] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0075] One or more transceivers (106, 206) may transmit user data, control information, wireless signals / channels, etc., as described in the methods and / or flowcharts of this specification, to one or more other devices. One or more transceivers (106, 206) may receive user data, control information, wireless signals / channels, etc., as described in the functions, procedures, proposals, methods and / or flowcharts of this specification, from one or more other devices. For example, one or more transceivers (106, 206) may be coupled to one or more processors (102, 202) and may transmit and / or 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 wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and / or receive user data, control information, wireless signals / channels, or the like, as referred to in the functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this specification, via one or more antennas (108, 208). In this specification, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) may convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals for processing using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0076] FIG. 3 illustrates another example of a wireless device capable of performing implementation(s) of the present specification. Referring to FIG. 3, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 2 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and additional elements (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, 202) and / or one or more memories (104, 204) of FIG. 2. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 2. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operation of the wireless device. For example, the control unit (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) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0077] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output (I / O) unit, a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 1, 100a), a vehicle (Fig. 1, 100b-1, 100b-2), an XR device (Fig. 1, 100c), a portable device (Fig. 1, 100d), a home appliance (Fig. 1, 100e), an IoT device (Fig. 1, 100f), a UE for digital broadcasting, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 1, 400), a BS (Fig. 1, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0078] In FIG. 3, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and a first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of 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 graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, transitory memory, non-transitory memory, and / or a combination thereof.

[0079] In this specification, at least one memory (e.g., 104 or 204) can store instructions or programs that, when executed, cause at least one processor operably connected to the at least one memory to perform operations according to some embodiments or implementations of the present specification.

[0080] In this specification, a computer-readable (non-transitory) storage medium can store at least one instruction or computer program, which when executed by at least one processor causes the at least one processor to perform operations according to some embodiments or implementations of this specification.

[0081] In this specification, a processing device or apparatus may include at least one processor and at least one computer memory operatively connected to the at least one processor. The at least one computer memory may store instructions or programs, which, when executed, cause at least one processor operatively connected to the at least one memory to perform operations according to some embodiments or implementations of the present specification.

[0082] In this specification, a computer program may be stored in at least one computer-readable (non-transitory) storage medium and may include program code that, when executed, performs operations according to some implementations of the present specification or causes at least one processor to perform operations according to some implementations of the present specification. The computer program may be provided in the form of a computer program product. The computer program product may include at least one computer-readable (non-transitory) storage medium.

[0083] A communications device of the present specification comprises at least one processor; and at least one computer memory operably connected to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations according to the example(s) of the present specification described below.

[0084] Figure 4 illustrates an example of a frame structure available in a 3GPP-based wireless communication system.

[0085] The structure of the frame in Fig. 4 is merely an example, and the number of subframes, the number of slots, and the number of symbols in the frame can be varied. In an NR system, OFDM numerology (e.g., subcarrier spacing (SCS)) may be set differently between multiple cells aggregated to a single UE. Accordingly, the (absolute time) duration of a time resource (e.g., a subframe, a slot, or a transmission time interval (TTI)) consisting of the same number of symbols may be set differently between the aggregated cells. Here, the symbol may include an OFDM symbol (or a cyclic prefix - orthogonal frequency division multiplexing (CP-OFDM) symbol), an SC-FDMA symbol (or a discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbol). In this specification, the terms symbol, OFDM-based symbol, OFDM symbol, CP-OFDM symbol, and DFT-s-OFDM symbols are interchangeable.

[0086] Referring to Figure 4, in the NR system, uplink and downlink transmissions are organized into frames. Each frame is T f = (△f max *N f / 100)*T c = 10 ms duration, divided into two half-frames of 5 ms each. Here, T is the basic time unit for NR. c = 1 / (△fmax *N f ) and △f max = 480*10 3 Hz, and N f =4096. For reference, T is the basic time unit for LTE. s = 1 / (△f ref *N f,ref ) and △f ref = 15*10 3 Hz, and N f,ref =2048. T s Wow T c is a constant κ = T s / T c = 64 relationship. Each half-frame consists of 5 subframes, and the duration of a single subframe is T. sf is 1ms. Subframes are further divided into slots, and the number of slots in a subframe depends on the subcarrier spacing. Each slot consists of 14 or 12 OFDM symbols based on the cyclic prefix. In the normal cyclic prefix (CP), each slot consists of 14 OFDM symbols, and in the case of the extended CP, each slot consists of 12 OFDM symbols. The numerology is exponentially scalable with the subcarrier spacing △f = 2. u *Depends on 15 kHz. The following table shows the subcarrier spacing for regular CP △f = 2. u *Number of OFDM symbols per slot at 15 kHz (N) slot symb ), number of slots per frame (N frame,u slot ) and the number of slots per subframe (N subframe,u slot ) is shown.

[0087]

[0088] The following table shows the subcarrier spacing for extended CP △f = 2. u*Indicates the number of OFDM symbols per slot, the number of slots per frame, and the number of slots per subframe at 15 kHz.

[0089]

[0090] For a subcarrier spacing setting u, slots are n in increasing order within a subframe. u s ∈ {0, ..., nsubframe,u slot - 1} and n in increasing order within the frame u s,f ∈ {0, ..., n frame,u slot - Numbered as 1}.

[0091] Figure 5 illustrates the resource grid of a slot. A slot contains multiple symbols (e.g., 14 or 12) in the time domain. For each numeral (e.g., subcarrier spacing) and carrier, a common resource block (CRB) N is indicated by higher layer signaling (e.g., radio resource control (RRC) signaling). start,u grid Starting from,N size,u grid,x *N RB sc Dog subcarriers and N subframe,u symb A resource grid of OFDM symbols is defined, where N size,u grid,x is the number of resource blocks (RBs) in the resource grid, and the subscript x is DL for downlink and UL for uplink. N RB sc is the number of subcarriers per RB, and in 3GPP-based wireless communication systems, N RB scis typically 12. For a given antenna port p, subcarrier spacing configuration u, and transmission direction (DL or UL), there is one resource grid. The carrier bandwidth N for subcarrier spacing configuration u size,u grid is given to the UE by higher layer parameters (e.g., RRC parameters) from the network. Each element in the resource grid for antenna port p and subcarrier spacing configuration u is called a resource element (RE), and one complex symbol can be mapped to each RE. Each RE in the resource grid is uniquely identified by an index k in the frequency domain and an index l indicating the symbol position relative to a reference point in the time domain. In an NR system, an RB is defined by 12 consecutive subcarriers in the frequency domain. In an NR system, RBs can be classified into common resource blocks (CRBs) and physical resource blocks (PRBs). CRBs are numbered upwards from 0 in the frequency domain for the subcarrier spacing configuration u. The center of subcarrier 0 of CRB 0 for the subcarrier spacing configuration u coincides with 'Point A', which is a common reference point for the resource block grids. PRBs for subcarrier spacing u are defined within the bandwidth part (BWP) and range from 0 to N. size,u BWP,i -1, where i is the number of the bandwidth part. Common resource block n u CRB and bandwidth part i within physical resource block n PRB The relationship between the two is as follows: n u PRB = n u CRB +N start,u BWP,i , here N start,u BWP,iis a common resource block (BRB) whose bandwidth part starts relative to CRB 0. A BWP comprises multiple consecutive RBs in the frequency domain. For example, a BWP may be a given numeral u within a BWP i on a given carrier. i A subset of contiguous CRBs defined for a carrier. A carrier may include up to N (e.g., 5) BWPs. A UE may be configured to have one or more BWPs on a given component carrier. Data communication is performed through the activated BWPs, and only a predetermined number (e.g., 1) of BWPs configured for the UE may be activated on the carrier.

[0092] For each serving cell in a set of DL BWPs or UL BWPs, the network configures at least an initial DL BWP and one (if the serving configuration is configured with uplink) or two (if supplementary uplink is used) initial UL BWPs. The network may also configure additional UL and DL BWPs for the serving cell. For each DL BWP or UL BWP, the UE is provided with the following parameters for the serving cell: i) subcarrier spacing, ii) cyclic prefix, and iii) N size BWP = Offset RB with the assumption of 275 set and length L RB CRBN provided by the RRC parameter locationAndBandwidth, which indicates the resource indicator value (RIV). start BWP =O carrier +RB start and the number of contiguous RBs N size BWP =L RB , and the subcarrier spacing is provided by the RRC parameter offsetToCarrierO carrier; an index within the set of DL BWPs or UL BWPs; a set of BWP-common parameters and a set of BWP-specific parameters.

[0093] Switching between configured BWPs can occur using RRC signaling, DCI, an inactivity timer, or upon initiation of a random access. If an inactivity timer is configured for a serving cell, expiration of the inactivity timer associated with the serving cell switches the active BWP to the default BWP configured by the network.

[0094] Virtual resource blocks (VRBs) are defined within the bandwidth part and are numbered from 0 to N. size,u BWP,i Numbered from -1, where i is the number of the bandwidth part. VRBs are mapped to physical resource blocks (PRBs) according to interleaved or non-interleaved mapping. In some implementations, for non-interleaved VRB-to-PRB mapping, VRB n may be mapped to PRB n.

[0095] NR frequency bands are defined by two types of frequency ranges, FR1 and FR2, with FR2 also referred to as millimeter wave (mmW). The following table lists the frequency ranges in which NR can operate.

[0096]

[0097] Figure 6 illustrates physical channels used in a 3GPP-based communication system, which is an example of a wireless communication system, and a signal transmission / reception process using the channels.

[0098] When a UE is powered on again after being powered off or has been disconnected from a wireless communication system, it first searches for a suitable cell to camp on (search cell) and performs an initial cell search process, such as synchronizing with the cell or the BS of the cell (S11). During the initial cell search process, the UE receives a synchronization signal block (SSB) (also called an SSB / PBCH block) from the BS. The SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). The UE synchronizes with the BS based on the PSS / SSS and obtains information such as a cell identity (ID). In addition, the UE can obtain broadcast information within the cell based on the PBCH. Meanwhile, the UE can check the downlink channel status by receiving a downlink reference signal (DL RS) during the initial cell search process.

[0099] A UE that has completed initial cell search can camp on the cell. After camping on the cell, the UE monitors the PDCCH on the cell and receives the PDSCH based on the downlink control information (DCI) carried by the PDCCH to obtain more specific system information (S12).

[0100] Thereafter, the UE may perform a random access procedure to complete access to the BS (S13 to S16). For example, in the random access procedure, the UE may transmit a preamble through a physical random access channel (PRACH) (S13) and receive a random access response (RAR) to the preamble through a PDCCH and a corresponding PDSCH (S14). If reception of the RAR for the UE fails, the UE may retry transmitting the preamble. In the case of contention-based random access, a contention resolution procedure (S16) may be performed, including transmission of a PUSCH based on UL resource allocation included in the RAR (S15) and reception of a PDCCH and a corresponding PDSCH.

[0101] The UE, which has performed the procedure described above, can then perform reception of PDCCH / PDSCH (S17) and transmission of PUSCH / PUCCH (S18) as a general uplink / downlink signal transmission process. The control information that the UE transmits to the BS is collectively referred to as uplink control information (UCI). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK) (also referred to as HARQ-ACK), scheduling request (SR), channel state information (CSI), etc. CSI may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), and / or a rank indicator. UCI is generally transmitted through PUCCH, but may be transmitted through PUSCH when control information and traffic data must be transmitted simultaneously. Additionally, based on a request / instruction from the network, the UE can transmit UCI aperiodically via PUSCH.

[0102] The PDCCH carries DCI. For example, the PDCCH (i.e., DCI) carries the transmission format and resource allocation of the downlink shared channel (DL-SCH), resource allocation information for the uplink shared channel (UL-SCH), paging information for the paging channel (PCH), system information on the DL-SCH, resource allocation information for control messages of a layer (hereinafter, upper layer) located above the physical layer in the protocol stacks of the UE / BS, such as a random access response (RAR) transmitted on the PDSCH, transmission power control commands, activation / release of configured scheduling (CS), etc. The DCI that includes resource allocation information for the DL-SCH is also called PDSCH scheduling DCI, and the DCI that includes resource allocation information for the UL-SCH is also called PUSCH scheduling DCI. The DCI includes a cyclic redundancy check (CRC), and the CRC is masked / scrambled with various identifiers (e.g., radio network temporary identifier (RNTI)) depending on the owner or intended use of the PDCCH. For example, if the PDCCH is for a specific UE, the CRC is masked with the UE identifier (e.g., cell RNTI (C-RNTI)). If the PDCCH is for paging, the CRC is masked with the paging RNTI (P-RNTI). If the PDCCH is for system information (e.g., system information block (SIB)), the CRC is masked with the system information RNTI (SI-RNTI). If the PDCCH is for a random access response, the CRC is masked with the random access RNTI (RA-RATI).

[0103] When a PDCCH on one serving cell schedules a PDSCH or PUSCH on another serving cell, this is called cross-carrier scheduling. Cross-carrier scheduling using the carrier indicator field (CIF) can allow the PDCCH of a serving cell to schedule resources on another serving cell. On the other hand, when a PDSCH on a serving cell schedules a PDSCH or PUSCH on the serving cell, this is called self-carrier scheduling. When cross-carrier scheduling is used in a cell, the BS can provide the UE with information about the cell that schedules the cell. For example, the BS can provide the UE with information about whether the serving cell is scheduled by a PDCCH on another (scheduling) cell or by the serving cell, and if the serving cell is scheduled by another (scheduling) cell, which cell signals downlink assignments and uplink grants for the serving cell. In this specification, a cell that carries a PDCCH is called a scheduling cell, and a cell in which transmission of a PUSCH or PDSCH is scheduled by DCI included in the PDCCH, i.e., a cell that carries a PUSCH or PDSCH scheduled by the PDCCH, is called a scheduled cell.

[0104] The PDSCH is a physical layer DL channel for DL ​​data transport. PDSCH carries downlink data (e.g., DL-SCH transport blocks) and employs modulation methods such as Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64 QAM, and 256 QAM. Transport blocks (TBs) are encoded to generate codewords. A PDSCH can carry up to two codewords. Scrambling and modulation mapping are performed for each codeword, and the modulation symbols generated from each codeword can be mapped to one or more layers. Each layer is mapped to radio resources along with the DMRS, generating an OFDM symbol signal and transmitting it through the corresponding antenna port.

[0105] PUSCH is a physical layer UL channel for UL data transport. PUSCH carries downlink data (e.g., UL-SCH transport blocks) and modulation methods such as Pi / 2 BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, and 256QAM are applied. A transport block (TB) is encoded to generate a codeword. PUSCH can carry up to two codewords. Scrambling and modulation mapping are performed for each codeword, and the modulation symbols generated from each codeword can be mapped to one or more layers. Each layer is mapped to a radio resource along with the DMRS, generated as an OFDM symbol signal, and transmitted through the corresponding antenna port.

[0106] PUCCH refers to a physical layer UL channel for UCI transmission. PUCCH carries UCI (Uplink Control Information). The types of UCI transmitted on PUCCH include hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information, scheduling request (SR), and channel state information (CSI). UCI bits include HARQ-ACK information bits, SR information bits, LRR information bits, and CSI bits, if any. In this specification, the HARQ-ACK information bits correspond to a HARQ-ACK codebook. In particular, a bit sequence in which HARQ-ACK information bits are listed according to a predetermined rule is called a HARQ-ACK codebook.

[0107] - Scheduling request (SR): Information used to request UL-SCH resources.

[0108] - Hybrid automatic repeat request (HARQ)-acknowledgement (ACK): This is a response to a downlink data packet (e.g., a codeword) on the PDSCH. It indicates whether the downlink data packet was successfully received by the communication device. One HARQ-ACK bit may be transmitted in response to a single codeword, and two HARQ-ACK bits may be transmitted in response to two codewords. HARQ-ACK responses include positive ACK (simply, ACK), negative ACK (NACK), DTX, or NACK / DTX. Here, the term HARQ-ACK is used interchangeably with HARQ ACK / NACK, ACK / NACK, or A / N.

[0109] - Channel state information (CSI): Feedback information about the downlink channel. CSI may include channel quality information (CQI), rank indicator (RI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), SS / PBCH resource block indicator (SSBRI), layer indicator (LI), etc.

[0110] - Link recovery request (LRR)

[0111] In this specification, for convenience, the PUCCH resources set and / or instructed by the BS to the UE for HARQ-ACK, SR, and CSI transmission are referred to as HARQ-ACK PUCCH resources, SR PUCCH resources, and CSI PUCCH resources, respectively.

[0112] PUCCH formats can be categorized as follows based on the UCI payload size and / or transmission length (e.g., the number of symbols constituting the PUCCH resource). For more information on PUCCH formats, please refer to Table 4.

[0113] (0) PUCCH format 0 (PF0, F0)

[0114] - Supported UCI payload sizes: up to K bits (e.g., K = 2)

[0115] - Number of OFDM symbols constituting a single PUCCH: 1 to X symbols (e.g., X = 2)

[0116] - Transmission structure: PUCCH format 0 consists of only UCI signals without DMRS, and the UE transmits the UCI status by selecting and transmitting one of multiple sequences. For example, the UE transmits a specific UCI to the BS by transmitting one of multiple sequences through the PUCCH of PUCCH format 0. The UE transmits the PUCCH of PUCCH format 0 within the PUCCH resources for the corresponding SR configuration only when transmitting a positive SR.

[0117] - The configuration for PUCCH format 0 includes the following parameters for the corresponding PUCCH resource: an index for the initial cyclic shift, the number of symbols for PUCCH transmission, and the first symbol for the PUCCH transmission.

[0118] (1) PUCCH format 1 (PF1, F1)

[0119] - Supported UCI payload sizes: up to K bits (e.g., K = 2)

[0120] - Number of OFDM symbols constituting a single PUCCH: Y to Z symbols (e.g., Y = 4, Z = 14)

[0121] - Transmission structure: DMRS and UCI are configured / mapped to different OFDM symbols in TDM format. That is, DMRS is transmitted in symbols where modulation symbols are not transmitted. UCI is expressed by multiplying a specific sequence (e.g., orthogonal cover code (OCC)) by a modulation (e.g., QPSK) symbol. Code division multiplexing (CDM) is supported between multiple PUCCH resources (following PUCCH format 1) (within the same RB) by applying cyclic shift (CS) / OCC to both UCI and DMRS. PUCCH format 1 carries UCI of up to 2 bits in size, and the modulation symbols are spread in the time domain by an orthogonal cover code (OCC) (configured differently depending on whether frequency hopping is performed).

[0122] - The configuration for PUCCH format 1 includes the following parameters for the corresponding PUCCH resource: an index for the initial cyclic shift, the number of symbols for PUCCH transmission, the first symbol for the PUCCH transmission, and an index for the orthogonal cover code.

[0123] (2) PUCCH format 2 (PF2, F2)

[0124] - Supported UCI payload size: more than K bits (e.g., K = 2)

[0125] - Number of OFDM symbols constituting a single PUCCH: 1 to X symbols (e.g., X = 2)

[0126] - Transmission structure: DMRS and UCI are configured / mapped in the form of frequency division multiplexing (FDM) within the same symbol. The UE transmits the coded UCI bits by applying only IFFT without DFT. PUCCH format 2 carries UCI with a bit size greater than K bits, and the modulation symbols are transmitted in FDM with DMRS. For example, DMRS are located at symbol indices #1, #4, #7, and #10 within a given resource block with a density of 1 / 3. A pseudo-noise (PN) sequence is used for the DMRS sequence. Frequency hopping can be activated for the 2-symbol PUCCH format 2.

[0127] - The configuration for PUCCH format 2 includes the following parameters for the corresponding PUCCH resource: the number of PRBs, the number of symbols for PUCCH transmission, and the first symbol for the PUCCH transmission.

[0128] (3) PUCCH format 3 (PF3, F3)

[0129] - Supported UCI payload size: more than K bits (e.g., K = 2)

[0130] - Number of OFDM symbols constituting a single PUCCH: Y to Z symbols (e.g., Y = 4, Z = 14)

[0131] - Transmission structure: DMRS and UCI are configured / mapped to different symbols in TDM format. The UE applies DFT to the coded UCI bits and transmits them. PUCCH format 3 does not support UE multiplexing for the same time-frequency resources (e.g., the same PRB).

[0132] - The configuration for PUCCH format 3 includes the following parameters for the corresponding PUCCH resource: the number of PRBs, the number of symbols for PUCCH transmission, and the first symbol for the PUCCH transmission.

[0133] (4) PUCCH format 4 (PF4, F4)

[0134] - Supported UCI payload size: more than K bits (e.g., K = 2)

[0135] - Number of OFDM symbols constituting a single PUCCH: Y to Z symbols (e.g., Y = 4, Z = 14)

[0136] - Transmission Structure: DMRS and UCI are configured / mapped to different symbols in TDM format. PUCCH Format 4 can multiplex up to 4 UEs within the same PRB by applying OCC in the DFT front-end and CS (or interleaved FDM (IFDM) mapping) to DMRS. In other words, UCI modulation symbols are transmitted by TDM (Time Division Multiplexing) with DMRS.

[0137] - The configuration for PUCCH format 4 includes the following parameters for the corresponding PUCCH resource: the number of symbols for PUCCH transmission, the length for the orthogonal cover code, the index for the orthogonal cover code, and the first symbol for the PUCCH transmission.

[0138] The following table shows examples of PUCCH formats. Depending on the PUCCH transmission length, they can be classified into short PUCCH (formats 0 and 2) and long PUCCH (formats 1, 3, and 4).

[0139]

[0140] If the UE does not have a dedicated PUCCH configuration provided by PUCCH-ResourceSet in RRC configuration PUCCH-Config, for example, before the UE acquires PUCCH-Config, the PUCCH resource set is N size BWPThe SIB can be provided by push-ResourceCommon through an index to the row of the following table for transmission of HARQ-ACK information on PUCCH within the initial UL BWP of the PRBs.

[0141] The following table is Table 9.2.1-1 of 3GPP TS 38.213, and illustrates PUCCH resource sets (also called initial PUCCH resource sets) and their parameters that can be used before establishing dedicated PUCCH resources. The BS configures / indicates one of the index values ​​0 to 15 in the following table cell-specifically via the parameter pucch-ResourceCommon in the SIB.

[0142]

[0143] The above PUCCH resource set each has a PUCCH format, a first symbol, a duration, and a PRB offset RB. offset BWP , and may include 16 resources corresponding to the cyclic shift index for PUCCH transmission. For the PUCCH resource set defined by index, 16 PUCCH resources (r) are defined using the parameters defined in the table above. PUCCH = 0, 1, 2, ..., 15) can be formed. For example, if the BS sets / indicates index 0 or 1 or 4 through SIB, the parameter values ​​for each of the 16 different PUCCH resources can be as follows.

[0144]

[0145] If the UE is not provided with an RRC parameter pdsch-HARQ-ACK-Codebook indicating whether the PDSCH HARQ-ACK codebook is semi-static or dynamic, the UE generates at most one HARQ-ACK bit. If the UE provides HARQ-ACK information in a PUCCH transmission in response to detecting DCI format 1_0 or DCI format 1_1, the UE selects a PUCCH resource for the PUCCH transmission among 16 PUCCH resources belonging to a PUCCH resource set corresponding to an index obtained through push-ReosurceCommon in SIB, the number N of CCEs in the CORESET of the PDCCH reception having DCI format 1_0 or DCI 1_1. CCE , index n of the first CCE for receiving the above PDCCH CCE,0 , the value of the PUCCH resource indicator (PRI) field in the DCI format 1_0 or DCI format 1_1 △ PRI can be determined based on. For example, if the UE provides HARQ-ACK information in a PUCCH transmission in response to detecting DCI format 1_0 or DCI format 1_1, the UE may determine based on the index r PUCCH r PUCCH resources PUCCH = floor{(2*n CCE,0 ) / N CCE} + 2*△ PRI is determined as , where 1 ≤ r PUCCH ≤ 15. floor(r PUCCH / 8) = 0, the UE sets the PRB index of the PUCCH transmission to RB in the first hop. offset BWP + floor(r PUCCH / N CS ) is determined as N, and in the second hop, the PRB index of the PUCCH transmission is N.size BWP - 1 - RB offset BWP - floor(r PUCCH / N CS ) is determined as, where N CS is the total number of initial cyclic transition indices in the set of initial cyclic transition indices, and the UE selects an initial cyclic transition index in the set of initial cyclic transition indices r PUCCH mod N CS can be determined as floor(r PUCCH / 8) = 1, the UE transmits the PRB index of the PUCCH transmission in the first hop to N. size BWP - 1 - RB offset BWP - floor{(r PUCCH - 8) / N CS} is determined as RB, and in the second hop, the PRB index of the PUCCH transmission is determined as RB. offset BWP + floor{(r PUCCH - 8) / N CS}, and the UE determines the initial cyclic shift index within the set of initial cyclic shift indices (r PUCCH - 8) mod N CS can be decided as.

[0146] When a UE has a dedicated PUCCH resource configuration, the UE is provided with one or more PUCCH resources by upper layer signaling. PUCCH resources can be determined according to UCI type (e.g., A / N, SR, CSI). PUCCH resources used for UCI transmission can be determined based on the UCI (payload) size. For example, a BS configures multiple PUCCH resource sets to the UE, and the UE can select a specific PUCCH resource set corresponding to a specific range according to the range of the UCI (payload) size (e.g., the number of UCI bits). For example, the UE may set the number of UCI bits (N) to be the number of PUCCH resources. UCI ) can select one of the following PUCCH resource sets.

[0147] - PUCCH resource set #0, if UCI bit count =< 2

[0148] - PUCCH resource set #1, if 2< UCI bits =< N1

[0149] ...

[0150] - PUCCH resource set #(K-1), if N K-2 < UCI bit count =< N K-1

[0151] Here, K is the number of PUCCH resource sets (K>1), and N i is the maximum number of UCI bits supported by PUCCH resource set #i. For example, PUCCH resource set #1 may be composed of resources of PUCCH formats 0 to 1, and other PUCCH resource sets may be composed of resources of PUCCH formats 2 to 4 (see Table 4).

[0152] The configuration for each PUCCH resource includes a PUCCH resource index, an index of a starting PRB, and a configuration for one of PUCCH formats 0 to 4. The UE is configured by the BS via a higher layer parameter maxCodeRate to multiplex HARQ-ACK, SR, and CSI report(s) within a PUCCH transmission using PUCCH format 2, PUCCH format 3, or PUCCH format 4. The higher layer parameter maxCodeRate is used to determine how to feed back UCI on the PUCCH resource for PUCCH format 2, 3, or 4.

[0153] When the UCI type is SR or CSI, the PUCCH resources to be used for UCI transmission within the PUCCH resource set can be configured to the UE by the network via higher layer signaling (e.g., RRC signaling). When the UCI type is HARQ-ACK for SPS (Semi-Persistent Scheduling) PDSCH, the PUCCH resources to be used for UCI transmission within the PUCCH resource set can be configured to the UE by the network via higher layer signaling (e.g., RRC signaling). On the other hand, when the UCI type is HARQ-ACK for PDSCH scheduled by DCI, the PUCCH resources to be used for UCI transmission within the PUCCH resource set can be scheduled based on the DCI.

[0154] In case of DCI-based PUCCH resource scheduling, the BS transmits DCI to the UE via PDCCH, and can indicate PUCCH resources to be used for UCI transmission within a specific PUCCH resource set via an ACK / NACK resource indicator (ARI) in the DCI. The ARI is used to indicate PUCCH resources for ACK / NACK transmission and may also be referred to as a PUCCH resource indicator (PRI). Here, the DCI is a DCI used for PDSCH scheduling, and the UCI may include HARQ-ACK for the PDSCH. Meanwhile, the BS can configure a PUCCH resource set consisting of more PUCCH resources than the number of states that the ARI can express, to the UE, using (UE-specific) higher layer (e.g., RRC) signaling. At this time, the ARI indicates a PUCCH resource subset within the PUCCH resource set, and which PUCCH resource to use within the indicated PUCCH resource subset can be determined according to an implicit rule based on transmission resource information for the PDCCH (e.g., a start control channel element (CCE) index of the PDCCH, etc.).

[0155] UCI can also be transmitted via PUSCH, where UL data is transmitted, or only UCI can be transmitted without UL-SCH.

[0156] Fig. 7 illustrates a flow of a process related to channel state information (CSI). Referring to Fig. 7, a UE may receive CSI-related configuration information from a BS via RRC signaling (S710). The CSI-related configuration information may include information related to CSI-RS resources or resource sets (e.g., time-frequency resource information, sequence information, power information, etc.), information related to CSI reporting (e.g., report quantity information, report type information, report resource information, codebook information, etc.), information related to CSI measurement, etc. Here, in order to assist the BS with transceiver muting and / or transmission power adaptation of the BS, the UE may be configured to report multiple CSI entries in CSI reporting based on a plurality of sub-configurations. Here, each sub-configuration may correspond to a spatial domain adaptation pattern (e.g., a subset of available spatial elements) and / or a power offset. Additionally, with respect to CSI reporting, a higher layer configuration (e.g., CSI-ReportConfig) may include a list of sub-configurations. IEcsi-ReportSubConfig is used to set parameters for a sub-configuration within a CSI reporting configuration. Each sub-configuration is identified by an identifier (e.g., csi-ReportSubConfigID) and corresponds to a list of at least one CSI-RS resource (e.g., see parameter nzp-CSI-RS-ResourceList), or corresponds to a CSI-RS antenna port subset (e.g., see parameter portSubsetIndicator), and / or corresponds to a power control offset related parameter (e.g., powerControlOffset) of the CSI-RS resource(s), as well as a power offset for a PDSCH related to the CSI-RS (e.g., see parameter powerOffset).The parameter portSubsetIndicator may indicate the number of ports of non-zero power (NZP) CSI-RS resources indicated in nzp-CSI-RS-resourceList (the value is equal to portNumber of these NZP CSI-RS resources) and the (sub)set of CSI-RS antenna ports used for CSI computation of the sub-configuration. In the bit string of the parameter portSubsetIndicator, each bit corresponds to an antenna port, and if the bit is set to 1, the corresponding port is enabled for CSI computation corresponding to the sub-configuration, and if the bit is set to 0, the corresponding port is not enabled for CSI computation corresponding to the sub-configuration. The parameter nzp-CSI-RS-resourceList is a list of NZP CSI-RS resources for the sub-configuration, which is a (sub)set of NZP CSI-RS resource(s) of the CSI-RS resource set for channel measurement associated with the sub-configuration in the CSI reporting configuration, where the value 0 indicates the first NZP CSI-RS resource of the CSI-RS resource set, and the value 1 indicates the second NZP CSI-RS resource of the CSI-RS resource set. The parameter powerOffset is a power offset of a PDSCH RE for an NZP CSI-RS resource element (RE) equal to powerControlOffset-powerOffset, if the parameter powerControlOffset is set for the NZP CSI-RS resources indicated in nzp-CSI-RS-Resources.

[0157] A configuration related to CSI may include multiple sub-configurations. Accordingly, when interpreting configuration information for CSI, the UE may determine CSI-RS resources, CSI-RS port mapping, power offset, codebook type, report item (quantity), etc. by considering the sub-configuration(s). When the UE is configured with configuration information related to CSI reporting including sub-configuration(s) (e.g., CSI-ReportConfig), the UE does not expect that the upper layer parameter related to the report item (e.g., reportQuantity) is set to 'cri-RSRP', 'cri-SINR', 'cri-SINR- Index', 'cri-RSRP-Index', 'none', 'ssb-Index-RSRP', 'ssb-Index-SINR', 'ssb-Index-RSRP- Index', 'ssb-Index-SINR- Index' or 'tdcp'. In addition, when the type of CSI reporting is set to semi-persistent CSI reporting or aperiodic CSI reporting, the BS may activate / trigger only some of the sub-configurations configured for the UE through a MAC control element (CE) or DCI. The trigger state of the aperiodic CSI reporting may be configured as needed, and whether the semi-static CSI reporting is activated or not may be controlled by an activation command. For example, in order to activate / trigger only some of the sub-configurations configured for the UE, the BS may provide the UE with an IECSI-ReportSubConfigTriggerList, which is used to configure a list of sub-configuration ID(s) of N sub-configurations among L configured sub-configurations in the CSI-ReportConfig related to the triggering state for semi-persistent reporting and aperiodic CSI reporting on PUSCH.

[0158] Referring to 3GPP TS 38.321, the network may select CSI reporting state(s) to be reported from among the aperiodic CSI trigger states of the serving cell configured in the RRC configuration aperiodicTriggerStateList, which includes trigger states for dynamically selecting one or more aperiodic and quasi-persistent reporting configurations and / or for triggering one or more aperiodic CSI-RS resource sets for channel and / or interference measurements, by sending an Aperiodic CSI Trigger State Subselection MAC CE.

[0159] For CSI-RS resource sets associated with resource settings with the higher layer parameter resourceType set to 'aperiodic', 'periodic' or 'semi-persistent', trigger states for reporting configuration(s) (configured with the higher layer parameter reportConfigType set to 'aperiodic') and / or resource settings for channel and / or interference measurements on one or more component carriers can be configured using the higher layer parameter CSI-AperiodicTriggerStateList. For a reporting setting for which the CSI-ReportConfigcontains a list of sub-configurations provided by the higher layer parameter csi-ReportSubConfigList, one or more trigger states can be configured with each indicating one or more of the sub-configurations. For aperiodic CSI reporting triggering, a single set of CSI triggering states can be configured by the upper layer, where a CSI triggering state can be associated with any candidate DL BWP.

[0160] For semi-persistent reporting on PUSCH, a set of trigger states can be configured by a higher layer parameter CSI-SemiPersistentOnPUSCH-TriggerStateList, where a CSI request field of DCI scrambled with SP-CSI-RNTI can activate one of the trigger states. For a reporting setting for which the CSI-ReportConfig contains a list of sub-configurations, provided by the higher layer parameter csi-ReportSubConfigList, one or more trigger states can be configured with each indicating one or more of the sub-configurations.

[0161] For semi-persistent reporting on PUCCH, the PUCCH resources used to transmit CSI reports can be configured by reportConfigType. Semi-persistent reporting on PUCCH can be activated by an activation command as described in 3GPP TS 38.321, which selects one of the semi-persistent reporting sets for the UE to use on PUCCH. For a selected reporting setting for which the CSI-ReportConfig contains a list of sub-configurations provided by the higher layer parameter csi-ReportSubConfigList, the activation command may select one or more sub-configurations for the UE to use. If the UE wants to transmit PUCCH with HARQ-ACK information in slot n corresponding to the PDSCH carrying the activation command, the above-indicated semi-persistent reporting setting is set to slot n+3*N subframe,u slot It is applied starting from the first slot, where u is the SCS setting for the PUCCH.

[0162] The UE performs CSI measurement based on CSI-related configuration information (S720). The CSI measurement may include (1) a process of receiving CSI-RS by the UE (S721) and (2) a process of performing CSI computation using the received CSI-RS (S722).

[0163] The UE can transmit a CSI report based on the calculated CSI (S730). Here, if the parameter quantity of CSI-ReportConfig is set to 'none (or No report)', the UE can skip transmitting the CSI report. However, even if the parameter quantity is set to 'none (or No report)', the UE can still transmit the CSI report to the BS. The case where the parameter quantity is set to 'none' is when an aperiodic tracking reference signal (TRS) is triggered or repetition is set. Here, the transmission of the CSI report can be skipped only when repetition is set to 'ON'.

[0164] A UE may transmit CSI(s) for at least one sub-configuration according to a report item parameter (e.g., reportQuantity) configured for configuration information related to CSI reporting (e.g., CSI-ReportConfig). For example, a CSI report may include at least one of PMI, CQI, RI, CRI, SSBRI, LI, and RSRP.

[0165] In some scenarios (e.g., NR-based systems), CSI (feedback) can be broadly divided into two types: Type 1 CSI (also called Type I CSI) and Type 2 CSI (also called Type II CSI). Both Type 1 CSI (feedback) and Type 2 CSI (feedback) are codebook-based CSI reporting schemes, where Type 1 CSI is a PMI feedback scheme with normal spatial resolution and requires a relatively small payload size, while Type 2 CSI is a feedback scheme with higher spatial resolution and requires a relatively large payload size. Additionally, each type of CSI can have three reporting methods: wideband (WB) reporting > partial band (PB) reporting > subband (SB) reporting, depending on the size of the bandwidth over which the measurement is to be performed, where PB can mean an active BWP, WB can mean a bandwidth larger than PB, and SB can mean a bandwidth smaller than PB. Each type of CSI can be composed of CSI Part 1 (also referred to as 'Part 1 CSI') and CSI Part 2 (also referred to as 'Part 2 CSI'). For example, CQIs for CRI, RI, and / or the first codeword can be included in CSI Part 1, and CQIs for LI, PMI, and the second codeword can be included in CSI Part 2. In some implementations, CSI Part 1 may have a fixed payload size and may be used to identify the number of information bits in CSI Part 2, which are included in the CSI report before CSI Part 2. The payload of CSI Part 2 may be variable. The CSI report may be transmitted over at least one of the PUCCH or PUSCH.

[0166] When a UE multiplexes CSI reports including Part 2 CSI reports on a PUCCH resource, the UE may determine the number of PRBs for the PUCCH resource or the number of Part 2 CSI reports, assuming that each CSI report or each CSI sub-report included in the CSI report indicates rank 1 or rank combination {1, 1}. When a higher layer parameter related to the CSI reporting mode (e.g., csi-ReportMode) is set to 'Mode2', the UE may determine the number of PRBs for the PUCCH resource or the number of Part 2 CSI reports, assuming that each CRI of the CSI report is associated with a resource pair.

[0167] When a CSI report on PUSCH includes two parts, the UE may omit some of the Part 2 CSI. The omission of Part 2 CSI is in priority order. When omitting Part 2 CSI information for a particular priority level, the UE shall exclude all information for that priority level, except when the corresponding CSI report includes at least one CSI sub-report containing Part 2, which corresponds to a sub-configuration from the list of sub-configurations provided by a higher layer parameter (e.g., csi-ReportSubConfigList) included in the information related to the CSI report (e.g., CSI-ReportConfig).

[0168] For report settings related to CSI report-related information (e.g., CSI-ReportConfig) that include a list of sub-configurations, the following processing is possible: For a corresponding CSI report that includes at least one CSI sub-report, omission of Part 2 CSI is performed at the sub-configuration level within the same priority level, where the sub-configuration with the lower index value has the higher priority.

[0169] If a CSI report consists of two parts, the terminal may omit some of the Part 2 CSI. Omission of Part 2 CSI is based on priority order. Starting with the lowest priority level, Part 2 CSI may be omitted up to the Part 2 CSI coding rate that is less than or equal to the coding rate set by the higher layer parameter (e.g., maxCodeRate).

[0170] CSI is transmitted through PUCCH or PUSCH and can be expressed by a bit sequence of a certain size. When CSI is transmitted through PUCCH, if a parameter (e.g., csi-ReportSubConfig) for CSI reporting per sub-configuration (hereinafter, CSI sub-report) is set in the CSI reporting configuration, the mapping order of CSI fields of one CSI sub-report may be as follows for the corresponding CSI sub-report. The following table is Table 6.3.1.1.2-11C of 3GPP TS 38.212, and N sub n The mapping order of the CSI fields of a CSI report including the dog CSI sub-report(s).

[0171]

[0172] The subbands for CSI reporting n indicated by the upper layer parameter csi-ReportingBand with the value set to '1' are numbered continuously in increasing order, starting with the lowest subband of csi-ReportingBand with the value set to '1' as subband 0: CSI Sub-Report #1, CSI Sub-Report #2, ..., CSI Sub-Report #N. sub n Corresponds to CSI sub-reports in increasing order of CSI-ReportSubConfigID.

[0173] In order for a UE to transmit UL-SCH data, it must have uplink resources available to the UE, and in order for the UE to receive DL-SCH data, it must have downlink resources available to the UE. Uplink and downlink resources are assigned to the UE through resource allocation by the BS. Resource allocation may include time domain resource allocation (TDRA) and frequency domain resource allocation (FDRA). In this specification, uplink resource allocation is also referred to as uplink grant, and downlink resource allocation is also referred to as downlink assignment. Uplink grant is dynamically received by the UE on the PDCCH or within the RAR, or semi-persistently configured to the UE by RRC signaling from the BS. Downlink assignment is dynamically received by the UE on the PDCCH, or semi-persistently configured to the UE by RRC signaling from the BS.

[0174] In UL, the BS can dynamically allocate uplink resources to the UE via PDCCH(s) addressed to a cell radio network temporary identifier (C-RNTI). The UE monitors the PDCCH(s) to find possible uplink grant(s) for UL transmission. Furthermore, the BS can allocate uplink resources to the UE using the configured grant(s). Two types of configured grants can be used: Type 1 and Type 2. For Type 1, the BS directly provides the configured uplink grant (including the periodicity) via RRC signaling. For Type 2, the BS can configure the period of the RRC configured uplink grant via RRC signaling, and signal and activate or deactivate the configured uplink grant via a PDCCH addressed to a configured scheduling RNTI (CS-RNTI). For example, for Type 2, a PDCCH addressed to CS-RNTI implicitly indicates that the corresponding uplink grant can be reused according to a period set by RRC signaling until it is deactivated.

[0175] In DL, the BS can dynamically allocate downlink resources to the UE via PDCCH(s) addressed with the C-RNTI. The UE monitors the PDCCH(s) to discover possible downlink assignments. Additionally, the BS can allocate downlink resources to the UE using semi-persistent scheduling (SPS). The BS can configure the period of the configured downlink assignments via RRC signaling, and signal and activate or deactivate the configured downlink assignments via the PDCCH addressed with the CS-RNTI. For example, a PDCCH addressed with the CS-RNTI implicitly indicates that the corresponding downlink assignment can be reused according to the period configured by the RRC signaling until it is deactivated.

[0176] Figure 8 illustrates an example of PDSCH time domain resource allocation by PDCCH and an example of PUSCH time domain resource allocation by PDCCH.

[0177] The DCI carried by the PDCCH for scheduling the PDSCH or PUSCH includes a time domain resource assignment (TDRA) field, which provides a value m for a row index m+1 of an allocation table for the PDSCH or PUSCH. A predefined default PDSCH time domain allocation is applied as the allocation table for the PDSCH, or a PDSCH time domain resource allocation table configured by the BS through RRC signaling pdsch-TimeDomainAllocationList is applied as the allocation table for the PDSCH. A predefined default PUSCH time domain allocation is applied as the allocation table for the PUSCH, or a PUSCH time domain resource allocation table configured by the BS through RRC signaling pushch-TimeDomainAllocationList is applied as the allocation table for the PUSCH. The PDSCH time domain resource allocation table to be applied and / or the PUSCH time domain resource allocation table to be applied may be determined according to fixed / predefined rules (e.g., see 3GPP TS 38.214).

[0178] In the PDSCH time domain resource configurations, each indexed row defines a DL allocation-to-PDSCH slot offset K0, a start and length indicator value SLIV (or directly a starting position (e.g., a starting symbol index S) and an allocation length (e.g., a number of symbols L) of a PDSCH within a slot), and a PDSCH mapping type. In the PUSCH time domain resource configurations, each indexed row defines a UL grant-to-PUSCH slot offset K2, a starting position (e.g., a starting symbol index S) and an allocation length (e.g., a number of symbols L) of a PUSCH within a slot, and a PUSCH mapping type. K0 for PDSCH or K2 for PUSCH indicates the difference between a slot with a PDCCH and a slot with a PDSCH or PUSCH corresponding to the PDCCH. SLIV is a joint indication of a starting symbol S relative to the start of a slot with a PDSCH or PUSCH and the number L of consecutive symbols counted from the symbol S. For PDSCH / PUSCH mapping type, there are two mapping types: one is mapping type A and the other is mapping type B. For PDSCH / PUSCH mapping type A, a demodulation reference signal (DMRS) is mapped to a PDSCH / PUSCH resource at the beginning of a slot, and one or two symbols of the PDSCH / PUSCH resource can be used as DMRS symbol(s) depending on other DMRS parameters. For example, for PDSCH / PUSCH mapping type A, the DMRS is located at the third symbol (symbol #2) or the fourth symbol (symbol #3) in a slot depending on RRC signaling. For PDSCH / PUSCH mapping type B, the DMRS is mapped based on the first OFDM symbol of the PDSCH / PUSCH resource, and one or two symbols from the first symbol of the PDSCH / PUSCH resource can be used as DMRS symbol(s) depending on other DMRS parameters.For example, in the case of PDSCH / PUSCH mapping type B, DMRS is located in the first symbol allocated for PDSCH / PUSCH. In this specification, PDSCH / PUSCH mapping type may be referred to as mapping type or DMRS mapping type. For example, in this specification, PUSCH mapping type A may be referred to as mapping type A or DMRS mapping type A, and PUSCH mapping type B may be referred to as mapping type B or DMRS mapping type B.

[0179] The above scheduling DCI includes a frequency domain resource assignment (FDRA) field that provides allocation information regarding resource blocks used for PDSCH or PUSCH. For example, the FDRA field provides the UE with information regarding the cell for PDSCH or PUSCH transmission, information regarding the BWP for PDSCH or PUSCH transmission, and information regarding resource blocks for PDSCH or PUSCH transmission.

[0180] A control resource set (CORESET), which is a set of time-frequency resources for which a UE can monitor PDCCH, may be defined and / or configured. A CORESET consists of a set of physical resource blocks (PRBs) with a duration of one to three OFDM symbols. The PRBs constituting the CORESET and the CORESET duration may be provided to the UE via higher layer (e.g., RRC) signaling. Within the configured CORESET(s), a set of PDCCH candidates is monitored according to the corresponding search space sets. In this specification, monitoring implies decoding (aka blind decoding) each PDCCH candidate according to the monitored DCI formats. The master information block (MIB) on the PBCH provides the UE with parameters (e.g., CORESET#0 configuration) for monitoring the PDCCH for scheduling the PDSCH carrying the system information block 1 (SIB1). The PBCH may also indicate that there is no associated SIB1, in which case the UE may be instructed on other frequencies to search for the SSB associated with SIB1, as well as a frequency range in which it can assume that there is no SSB associated with SSB1. At least CORESET#0, which is the CORESET for scheduling SIB1, may be configured via the MIB or dedicated RRC signaling.

[0181] More than one CORESET may be configured for a UE, and multiple CORESETs may overlap in the time / frequency domain.

[0182] The set of PDCCH candidates monitored by the UE is defined in terms of PDCCH search space sets. The search space set may be a common search space (CSS) set or a UE-specific search space (USS) set. Each CORESET configuration is associated with one or more search space sets, and each search space set is associated with one CORESET configuration.

[0183] A set of PDCCH candidates can be monitored in one or more CORESETs on an active DL BWP on each activated serving cell for which PDCCH monitoring is configured, where monitoring implies receiving each PDCCH candidate and decoding it according to the monitored DCI formats. For example, the following DCI formats may be available:

[0184]

[0185] SS sets can be configured via system information (e.g., MIB) or UE-specific higher layer (e.g., RRC) signaling. Each DL BWP of a serving cell can have up to S (e.g., 10) SS sets configured. For example, the following parameters / information can be provided for each SS set. Each SS set is associated with one CORESET, and each CORESET configuration can be associated with one or more SS sets.

[0186] -searchSpaceId: Indicates the ID of the SS set.

[0187] -controlResourceSetId: Indicates the CORESET associated with the SS set.

[0188] -monitoringSlotPeriodicityAndOffset: Indicates the PDCCH monitoring period period (in slots) and the PDCCH monitoring period offset (in slots).

[0189] -monitoringSymbolsWithinSlot: Indicates the first OFDMA symbol(s) for PDCCH monitoring within a slot where PDCCH monitoring is enabled. This is indicated via a bitmap, with each bit corresponding to each OFDMA symbol within the slot. The most significant bit (MSB) of the bitmap corresponds to the first OFDM symbol within the slot. The OFDMA symbol(s) corresponding to the bit(s) with a bit value of 1 corresponds to the first symbol(s) of the CORESET within the slot.

[0190] -nrofCandidates: Indicates the number of PDCCH candidates for each aggregation level (AL) = {1, 2, 4, 8, 16} (e.g., one of 0, 1, 2, 3, 4, 5, 6, 8).

[0191] -searchSpaceType: Indicates whether the SS type is CSS or USS.

[0192] - DCI format: Indicates the DCI format of the PDCCH candidate.

[0193] Based on the CORESET / SS set configuration, the UE can monitor PDCCH candidates in one or more SS sets within a slot. The occasions (e.g., time / frequency resources) during which PDCCH candidates should be monitored are defined as PDCCH (monitoring) occasions. One or more PDCCH (monitoring) occasions can be configured within a slot.

[0194] Figure 9 illustrates a processing process on the transmission side for a transport block (TB).

[0195] To enable the receiver to correct errors encountered in wireless signals over the wireless channel, the transmitter encodes the information it sends using a forward error correction code before transmitting it. The receiver demodulates the received signal and then decodes the error correction code to restore the transmitted information. This decoding process corrects errors in the received signal caused by the wireless channel.

[0196] Data arrives at the coding block in the form of up to two transport blocks per TTI per DL / UL cell. The following coding steps can be applied to each transport block in a DL / UL cell:

[0197] - Add cyclic redundancy check (CRC) code to the transport block;

[0198] - Code block segmentation and code block CRC attachment;

[0199] - Channel coding;

[0200] - Rate matching;

[0201] - Code block concatenation.

[0202] In actual communication systems, for ease of implementation, transport blocks larger than a certain size are divided into multiple smaller data blocks for encoding. These smaller data blocks are called code blocks.

[0203] Since the amount of radio resources for transmitting transport blocks and / or UCI is not dynamic but is fixed based on the setting or allocation by the BS, rate matching must be performed on the encoded code blocks to match this. Typically, rate matching is performed by puncturing or repetition. For example, if the number of transmission bits that can be transmitted by the corresponding radio resources is X, and the number of coded bit sequences, i.e., the number of output bits of the encoder, is Y, then if X and Y are different, rate matching is performed to adjust the length of the coded bit sequence to match X. If X>Y, all or part of the bits of the coded bit sequence are repeated so that the length of the rate-matched sequence becomes equal to X. X <Y이면, 레이트 매칭된 시퀀스의 길이가 X과 같아지도록, 코딩된 비트 시퀀스의 비트들 중 일부가 펑처링되며, 펑처링된 비트는 전송에서 제외된다. 할당된 / 설정된 무선 자원 내에 전송될 수 있는 비트 수는, 예를 들어, 상기 무선 자원에 포함되는 PRB들의 개수, OFDM 심볼들의 개수, 변조 차수 등에 기반하여 결정될 수 있다.

[0204] In a wireless communication system, a transmitter encodes data to be transmitted using channel coding having a specific code rate, and then adjusts the code rate of the data to be transmitted through a rate matching process consisting of puncturing and repetition.

[0205] The output bit sequence after rate matching and code block concatenation is modulated into modulation symbols through a modulator according to a modulation scheme. The modulation symbols are mapped to radio resources allocated by the BS and transmitted to the receiver through the radio resources. For example, if a PUCCH or PUSCH resource is configured / indicated with N PRBs and L OFDM symbols, modulation symbols can be mapped one-to-one to the remaining resource elements, excluding resource elements to which reference signals, etc. are mapped and cannot be used, among the resource elements in the PUCCH / PUSCH resource.

[0206] The decoding process of a channel code is the reverse of the encoding process, with a decoder corresponding to each encoder in the transmitter being used in the decoding process performed at the receiver. For example, the receiver decodes each code block (CB), then constructs a TB, and finally checks whether the TB CRC passes. In current 3GPP-based systems, the CB CRC is used to quickly terminate decoding. For example, if the CB CRC fails, the receiver can generate a NACK without decoding other CBs.

[0207] The following table illustrates modulation schemes and corresponding modulation orders that may be applied to uplink and downlink in some scenarios (e.g., 5G NR).

[0208]

[0209] For each codeword, for example, Q m One (complex-valued) modulation symbol can be generated per block of bits.

[0210] Referring to the table above, in some scenarios (e.g., 5G NR), for channels for DL / UL data transmission (e.g., PDSCH / PUSCH), BPSK (where Q m =1) to 256QAM (where Qm =8) are supported, so that data transmission can be performed with a high (modulation) order and a high data rate depending on the channel conditions. However, in the case of PUCCH, which is a channel through which UL control information is transmitted, the highest modulation order that can be supported when UCI must be transmitted with high reliability is Q m = 2 and the modulation scheme is QPSK, so even if the channel conditions are good, higher modulation orders cannot be used. Therefore, PUCCH has relatively lower resource efficiency compared to PUSCH.

[0211] Below, a method for setting up PUCCH resources capable of supporting high-order modulation and several implementations of the present specification that can increase the resource efficiency of PUCCH by adjusting the coding rate and / or modulation order and / or power of PUCCH are described.

[0212] <Method #1> A method of setting / applying different maximum coding rates for each modulation order or transmitting using different PUCCH formats.

[0213] Figure 10 is a part of the physical uplink control channel (PUCCH) configuration provided by higher layer signaling. According to 3GPP TS 38.331, a UE can be configured with a maximum coding rate (MCR) when a PUCCH format is configured. Referring to 3GPP TS 38.331, an information element (IE) PUCCH-Config, which configures UE-specific PUCCH parameters, may include PUCCH-FormatConfig, which is a configuration for a PUCCH format, and PUCCH-FormatConfig may include maxCodeRate, which is a parameter for a maximum coding rate (MCR) for the corresponding PUCCH format. The maximum coding rate may be used to determine how to feed back UCI on the PUCCH for formats 2, 3, or 4, and the parameter maxCodeRate does not apply to formats 0 and 1. May include.

[0214] Except when Pi / 2 BPSK modulation is enabled for PUCCH formats (PF) 3 and 4, QPSK modulation is applied to PFs 2, 3, and 4 for PUCCH transmission. Therefore, the aforementioned MCR is the value when QPSK modulation is applied to PFs 2 / 3 / 4, and in some implementations of this specification, if a higher modulation order (MO) than QPSK is applied to PFs 2 / 3 / 4, the MCR may be set for each MO or a PF for the higher-order modulation may be defined / configured separately. In some implementations, the UE may be configured with a modulation order and / or MCR for each PUCCH resource set, PUCCH resource, and / or PUCCH format through the following method(s).

[0215] 1) A method in which the UE individually configures the modulation order for each PUCCH resource. For example, QPSK, 16QAM, or both can be configured for each PUCCH resource.

[0216] 2) A method for a UE to individually configure modulation orders for each PUCCH resource set. In some implementations, a UE may be configured with multiple (e.g., two) modulation orders (e.g., QPSK & 16QAM) for a single PUCCH resource set, and may be configured with different payload size ranges corresponding to each modulation order.

[0217] 3) A method in which the UE individually sets the modulation order for each PUCCH format or individually sets the modulation order for each PUCCH format belonging to each PUCCH resource set.

[0218] 4) A method in which the UE individually sets the maximum coding rate (MCR) for each modulation order set for each PUCCH format, or a method in which the UE individually sets the MCR for each modulation order set for each PUCCH resource.

[0219] 5) A method for a UE to dynamically instruct the modulation order to be applied to PUCCH resources through DCI.

[0220] In NR, a coding rate can be set for each PUCCH format (PF) (e.g., parameter maxCodeRate included in PUCCH-FormatConfig of 3GPP TS 38.331). In some implementations of this specification, multiple MCRs may be pre-set for each PUCCH resource (PR) (or PUCCH resource set) or per PUCCH format (PF), and a method may be considered in which the MCR is changed accordingly when the modulation order is changed for the same PR / PF. For example, considering adapting the number of PRBs according to the UCI payload size, the UE may apply a maximum coding rate different from the MCR set for a PR / PF (hereinafter, QPSK PR / PF) for which QPSK is set for a PR and / or PF for which 16QAM modulation is set or indicated, or perform UCI transmission using a PR / PF different from the QPSK PR / PF when 16QAM modulation is indicated / set.

[0221] The UE is configured with a set of low and / or high order modulation PUCCH resources and / or resources in advance, and is instructed to transmit high order modulation PUCCH via a DL assignment (e.g., DCI) from the BS (e.g., a 1-bit flag in the DCI may be interpreted as PUCCH resource indicator (PRI) #1 for low order modulation PUCCH or PRI #2 for high order modulation PUCCH, or high order modulation PUCCH PR / PF may be indicated by the PRI), or modulation order (e.g., Q m= 2 or 4) When a specific PR / PF is indicated by a combination of a field directly indicating the modulation order and a PRI field, a pre-configured MCR can be applied according to the modulation order. For example, the UE can be dynamically indicated a legacy low-order (e.g., QPSK) modulation PUCCH resource or a high-order modulation PUCCH resource through a flag (or low / high (modulation order) indication field) bit in the DCI. If the flag = 0, the UE can interpret it as PRI #1, indicating a legacy low-order (e.g., QPSK) modulation PUCCH resource, and if the flag = 1, it can interpret it as PRI #2, indicating a high-order modulation PUCCH resource. Alternatively, in some implementations, a PUCCH TPC command (e.g., TPC coammnd for scheduled PUCCH in DCI format 1_0 / 1_1 / 1_2) may be interpreted as implicitly indicating a higher-order modulated PUCCH if it indicates a particular state.

[0222] <Method #2> A method for adapting the modulation order and / or maximum coding rate when the UE attempts to transmit UCI by applying a modulation order (e.g., QPSK) set for a specific PUCCH resource / format and the maximum coding rate set for the PUCCH resource / format is exceeded.

[0223] If the number of PRBs set for a PUCCH format (PUCCH format, PF) or PUCCH resource (PUCCH resource, PR) is N, the UE determines a PUCCH resource set based on the UCI payload size, and performs PUCCH transmission using a number of PRBs that can satisfy MCR within the number N of PRBs set for PUCCH resources indicated by PRI among the PUCCH resources in the determined PUCCH resource set.

[0224] UCI payload size K, modulation order Q m , the number of modulation symbols that can be transmitted in N PRBs (or the number of REs available for UCI transmission in N PRBs) is M symb If so, the rate-matching output sequence length E = Q m *M symb, and the coding rate R may be K / E. Conventionally, if the coding rate R of UCI applying QPSK modulation exceeds the maximum coding rate set for the set or allocated PUCCH resource / format, the UE is stipulated to drop a portion of UCI according to a predefined priority rule. Accordingly, a situation may occur in which the UCI required by the BS cannot be quickly delivered to the BS, or the BS may have to set / allocate excessively large PUCCH resources for reception of the UCI. In consideration of this, in some implementations of the present specification, multiple modulation orders may be set for the PUCCH resource (set) and / or the corresponding PUCCH format. In this case, in some implementations of the present specification, the MCR may be set for each modulation order. In some implementations of this specification, when a UE is instructed / configured to transmit UCI over a specific PF / PR, it may be defined or prescribed (in the standard, etc.) or may be configured / instructed in advance by the BS to transmit with a higher modulation order if the coding rate exceeds the configured MCR, even if the configured PRB(s) for that PF / PR are fully used.

[0225] For example, in a PUCCH resource configured with N PRB(s) configured with multiple (e.g., two) modulation orders (e.g., QPSK and 16QAM), 16QAM may be applied if the code rate when applying QPSK exceeds the MCR. In some implementations, the following methods may be considered.

[0226] > A. Option 1: When the coding rate when applying QPSK using all N PRB(s) exceeds the MCR (set for QPSK), a method in which the UE maps / transmits UCI by applying 16QAM to all N PRBs.

[0227] > B. Option 2: When the coding rate when applying QPSK using all N PRB(s) exceeds the MCR (set for QPSK), the UE applies 16QAM and maps / transmits UCI using the minimum number of PRB(s) that are less than or equal to the MCR (set for 16QAM).

[0228] > C. Option 3: A method of mapping / transmitting UCI by applying QPSK to the first K PRB(s), and if the coding rate at this time exceeds the MCR, applying 16QAM again, and if the coding rate still exceeds the MCR, increasing by K PRBs and repeating, using PRBs that are a positive integer multiple of the minimum K (e.g., K = 1) that are less than or equal to the MCR.

[0229] In some implementations related to Option 1, if the coding rate when applying QPSK using all N PRB(s) exceeds the MCR (configured for QPSK), for example, the UE may cyclically map 16QAM symbols onto resource elements available for UCI transmission within the N PRBs. In some implementations related to Option 2, if the coding rate when applying QPSK using all N PRB(s) exceeds the MCR (configured for QPSK), the UE may map 16QAM symbols onto resource elements available for UCI transmission within the N PRBs one by one, but if there are resource elements left without 16QAM symbols being mapped, the UE may mute the remaining resource elements without mapping any modulation symbols to them.

[0230] For Option 3, for example, the UE attempts to transmit UCI using two PRBs (e.g., K=2) with an initial QPSK modulation, and checks whether the coding rate at this time exceeds the configured MCR. If the MCR is exceeded, the modulation order is increased to 16QAM, and the coding rate is calculated using two PRBs with 16QAM modulation, and checks whether the coding rate based on the 16QAM modulation satisfies or is lower than the MCR. If the MCR is still exceeded at this time, the UE uses two more PRBs to check whether the coding rate calculated based on QPSK modulation and four PRBs satisfies or is lower than the MCR. If so, the UE can transmit UCI PUCCH through four PRBs with QPSK modulation.

[0231] Meanwhile, the current PRB adaptation on UCI PUCCH is structured to vary only the number of PRBs according to the payload size while fixing the MCR according to the requirement. However, if dynamic link adaptation is also possible for UCI PUCCH transmission, it may be possible for the UE to receive multiple candidate (MO, CR) combinations in advance and dynamically indicate / apply one of them. For example, the UE can consider both modulation order (MO) and MCR, and gradually increase the MO*CR value to find and transmit the smallest {MO, MCR} combination that can be transmitted within the maximum number of RBs, where CR is the coding rate. In this specification, the coding rate is also referred to as the code rate. The following is an example of a code rate corresponding to the value of maxCodeRate.

[0232]

[0233] Referring to the table above, for example, when the MCRs that can be set / applied to QPSK and 16QAM are as shown in the table above, the UE may first try {QPSK, 0.45}, then adapt the MCR to try {QPSK, 0.6}, and then sequentially perform adaptation in the form of gradually increasing MO*CR, such as {QPSK, 0.8} -> {16QAM, 0.45} -> {16QAM, 0.6} -> ..., and transmit by finding the smallest {MO, CR} combination that can be transmitted within the maximum number of RBs. At this time, the starting MO and MCR values ​​of the {MO, MCR} combination and the order of increasing MO*CR may be defined in advance (in a standard, etc.) or may be set / instructed in advance by the BS.

[0234] Alternatively, the difference between CR and MCR, defined by the combination of the number of MOs and PRBs, can be defined as a delta value. The UE can select a combination that minimizes the delta, or the BS can prioritize the delta and MO. In this case, the aforementioned Options can be expressed differently as follows.

[0235] > A. Option 1: If the difference delta between the calculated CR and the MCR (set for QPSK) when applying QPSK using all N PRB(s) exceeds a specific threshold, the UE increases the modulation order to 16QAM and applies 16QAM modulation to all N PRB(s) to map / transmit UCI. Here, the specific threshold can be set / instructed in advance by the BS.

[0236] > B. Option 2: When the difference delta between the calculated CR and the MCR (configured for QPSK) when applying QPSK using all N PRB(s) exceeds a specific threshold, the UE applies 16QAM and maps / transmits UCI using the number of PRBs for which the delta value (configured for 16QAM) is minimum. Here, the specific threshold can be set / instructed in advance by the BS.

[0237] > C. Option 3: A method of mapping / transmitting UCI using PRBs that are a positive integer multiple of the minimum K (e.g., K = 1) at which the delta value between the CR and MCR calculated by applying QPSK to the first K PRB(s) exceeds a specific threshold, comparing the delta value between the CR and MCR when the UE applies 16QAM by increasing the modulation order, and if it still exceeds the threshold, repeating the process by increasing the number of PRBs in units of K PRBs for QPSK modulation, such that the delta value is less than or equal to the threshold (e.g., K = 1). Here, the specific threshold can be set / instructed by the BS in advance.

[0238] Additionally, in some implementations, if the coding rate for a specific MO (e.g., QPSK) exceeds the MCR configured for the corresponding PR / PF, the UE may try applying a higher MO only for the specific UCI type (e.g., CSI part 2), and if the coding rate still exceeds the MCR, the UE may sequentially increase the MO for other UCI types (e.g., CSI part 1) to minimize UCI omissions, thereby gradually adapting the MO for each UCI type. For example, when the coding rate based on a specific MO exceeds the MCR configured for the corresponding PR / PF, the UE may apply partial MO adaptation, where instead of increasing the MO for the entire UCI, the UE may perform MO adaptation only for some UCIs, and increase the MO from the lower priority UCI (e.g., CSI part 2) to the higher priority UCI (e.g., HARQ-ACK), until it finds an MO whose coding rate satisfies the MCR and performs UCI transmission. At this time, the UCI priority related to the order of increasing MO can be defined in advance (in the standard, etc.) or set / instructed in advance from the BS.

[0239] <Method #3> A method of associating a specific modulation order according to the report item (report quantity) / codebook type / wideband or subband report composing the CSI report, or depending on the PUCCH format in which the CSI report is transmitted, or applying a modulation order differently depending on which channel coder is used, and in the case of semi-persistent (SP) CSI report (or aperiodic (AP) CSI report), a method of indicating the modulation order of the PUCCH through an activation DCI or a triggering DCI / MAC control element (CE).

[0240] A case where a higher modulation order (e.g., 16QAM) than the QPSK currently supported by NR is necessary / useful on PUCCH is when the UCI payload size to be included in the PUCCH is large. Therefore, when the UE is configured to transmit periodic (P) / semi-persistent (SP) CSI reports over PUCCH by report configuration / report setting, it can be configured / instructed to apply a specific modulation scheme to a specific UCI type (or entire UCI) depending on the CSI report configuration such as report quantity / codebook type / wideband or subband. In addition, in case of SP-CSI reporting, one or more candidate modulation orders of PUCCH for CSI report transmission can be configured within the CSI report configuration / setting, and one of the candidate modulation orders(es) can be dynamically indicated via DCI and / or MAC CE. For example, if the UE is configured to include subband CSI in its CSI reports, it may be configured / instructed to transmit PUCCH with a higher order modulation, such as 16QAM, applied to CSI Part 2 or to the entire UCI because the UCI payload size is relatively large. In case of SP CSI reporting (or aperiodic (AP) CSI reporting), the modulation order to be applied to PUCCH may also be dynamically indicated via activation DCI or triggering DCI and / or MAC CE.

[0241] Meanwhile, in the case where both CSI Part 1 and CSI Part 2 are included in the CSI report transmitted via PUCCH, and CSI Part 1 and CSI Part 2 are transmitted on multiple PUCCHs in different slots (e.g., CSI Part 1 is transmitted on the PUCCH of slot n, and CSI Part 2 is transmitted on the PUCCH of slot m that is later than slot n), high-order modulation (e.g., 16QAM) may be applied only to Part 2 CSI (QPSK may be applied to CSI Part 1 as before, since reliability is important), and in the case of a 2-part encoding PUCCH where CSI Part 1 and CSI Part 2 are encoded in separate blocks, unlike a 1-part encoding PUCCH where CSI Part 1 and CSI Part 2 are encoded in one block, (if the BS does not separately set / indicate the modulation order to be applied to Part 2 CSI), the modulation applied from Part 1 to Part 2 Information about the order may also be provided.

[0242] The UE may be configured with different modulation orders depending on the channel coder used for PUCCH transmission. For example, when the PUCCH carrying UCI uses the Reed-Muller (RM) code, it may be configured to apply QPSK, and when polar coding is applied, it may be configured to apply higher-order modulation (e.g., 16QAM) to the entire UCI.

[0243] NR's PUCCH formats include a short PUCCH format transmitted with a length of 1 to 2 symbols and a long PUCCH format transmitted with a length of 4 to 14 symbols. In some implementations, the short PUCCH format may always be configured to apply high-order modulation (e.g., 16QAM), and the long PUCCH format may always be configured to apply low-order modulation (e.g., QPSK).

[0244] <Method #4> A method of setting / indicating different beta offset values / modulation orders for each type of UCI when multiple UCIs are multiplexed on PUCCH (similar to UCI on PUSCH) and a method of enhancing legacy UCI-only PUSCH.

[0245] According to the current NR, when UCI is carried on PUSCH, a candidate set of beta offset values ​​is determined based on the payload size range, and one of them is indicated through DCI. In some implementations of this specification, the introduction of a dynamic coding rate for PUCCH may be considered. For example, among various UCI types, since reliability is important for UCI such as SR / HARQ-ACK, it may be configured to always apply QPSK as before, and for CSI, it may be configured to always apply a higher-order modulation such as 16QAM. Even when a higher-order modulation such as 16QAM is configured to apply for CSI, in some implementations, QPSK may still be applied for CSI Part 1.

[0246] As another example, a higher order modulation (than QPSK for UCI) may be applied, but for reliability, a relatively large beta offset value may be configured / instructed to be applied to SR / HARQ-ACK (depending on the importance of UCI), and a relatively small beta offset value may be configured / instructed to be applied to CSI. Even if a relatively small beta offset value is configured / instructed to be applied to CSI, in some implementations, a large beta offset value may still be applied to CSI Part 1. In some implementations, the beta offset value and / or the modulation order may be dynamically indicated via the DCI, or if no such indication is included in the DCI, a pre-configured semi-static value may be applied.

[0247] The modulation order to be applied to each UCI type is preset or indicated, and when multiple UCIs are multiplexed on a single PUCCH, for example, when HARQ-ACK with QPSK set as the modulation scheme and CSI with 16QAM set as the modulation scheme are multiplexed on the PUCCH, the modulation order to be applied by the UE may be preset / indicated. For example, since a UCI to which QPSK is set to be applied has a higher priority, a unified modulation scheme of QPSK may be applied to other UCIs multiplexed with the UCI.

[0248] Previously, when A-CSI only PUSCH without UL-SCH is triggered by UL-SCH indicator = 0 in DCI format 0_1 ​​or 0_2, the modulation order of PUSCH is applied to UCI. In some implementations of this specification, when a higher-order modulated PUCCH is indicated through DL assignment (e.g., a specific field (combination) in DCI or an indication of a specific PUCCH resource linked in advance), the same modulation order as PUSCH may be defined (in the standard, etc.) or configured / instructed in advance by the BS to the UE to be carried on PUCCH. When the same modulation order as PUSCH is applied to UCI carried on PUCCH, in some implementations, the PUSCH modulation order may be the last scheduled one or a separately configured / instructed value may be used. Alternatively, the UE may select a modulation order based on the UCI payload size / coding rate and separately encode information about the selected modulation order and transmit it to the BS.

[0249] <Method #6> A method in which the UE adapts three parameters (e.g., power control / maximum coding rate / modulation order) according to a predefined / set method or is dynamically instructed to set one of multiple parameter sets.

[0250] In a more generalized form of the aforementioned modulation order / maximum coding rate adaptation, the three parameters of power control (PC), maximum coding rate (MCR), and modulation order (MO) may be jointly coded in a state defined (e.g., in a standard) or pre-configured by the BS to the UE, and one of the states may be dynamically indicated via DCI and / or MAC CE. Alternatively, a separate PUCCH resource / set may be configured in which power boosting / MCR / MO may be dynamically indicated in advance. In this case, the UE may apply an adaptation rule for the three pre-configured / promised parameters. For example, when UCI transmission on PUCCH is instructed / configured, the UE first checks whether the coding rate satisfies the MCR, and if the coding rate exceeds the MCR, the UE first increases the modulation order and boosts the power of the PUCCH according to the preset / instruction and transmits it, or transmits it as is.

[0251] Alternatively, in some implementations, the UE may adapt parameters based on pre-configured conditions. For example, if the last measured signal-to-interference plus noise ratio (SINR) / CQI before a PUCCH transmission is below a predetermined threshold set for the UE, the UE may be configured to boost the power of the PUCCH by a predetermined step size or transmit it with a lower modulation order using QPSK. Alternatively, the UE may be configured to always transmit with a power boost of a predetermined value when a high-order modulation PUCCH transmission is triggered by the BS to improve decoding performance. In this case, the actual power boosting may be determined by considering the UE's power boosting capability and power margin (also known as power headroom).

[0252] <Method #7> Power control method for high-order modulation PUCCH

[0253] Currently, NR's PUCCH power control is performed based on QPSK. If a higher-order modulation, such as 16QAM, is applied to PUCCH, it is necessary to define how to control PUCCH power. For example, the UE may perform power control based on QPSK, but 16QAM may be defined to perform power control by adding a specific offset value to the QPSK power control equation. The specific offset value may be one of multiple preset values, either dynamically indicated through DCI and / or MAC CE or semi-statically set.

[0254] Additionally, in some implementations, with respect to PUCCH transmission on an active BWPb of carrier f of a primary cell c during a PUCCH transmission time i, a modulation order set per UCI (ACK / SR / CSI) may be applied in the PUCCH bits per resource element (BPRE) calculation formula (e.g., UCI bits ÷ number of resource elements) used in the following formula.

[0255] >

[0256] , where K2 = 2.4 and BPRE(i) = (O ACK (i) + O SR (i) + O CSI (i) + O CRC (i)) / N RE (i) is O ACK (i) is the number of HARQ-ACK information bits that the UE decides for a Type-1 HARQ-ACK codebook, a Type-2 HARQ-ACK codebook, a Type-3 HARQ-ACK codebook, a HARQ-ACK codebook retransmission, or to postpone HARQ-ACK for SPS PDSCH. O SR (i) is the number of SR information bits determined by the UE. O CSI (i) is the number of CSI bits determined by the UE. O CRC (i) is the number of CRC bits determined by the UE, and N RE (i) UE is N RE (i) = M PUCCH RB,b,f,c (i)*N RB sc,ctrl (i)*N PUCCH The number of resource elements determined as symb-UCI,b,f,c(i), where N RB sc,ctrl (i) is the number of subcarriers per resource block excluding subcarriers used for DM-RS transmission, and N PUCCHsymb-UCI,b,f,c(i) is the number of symbols excluding symbols used for DM-RS transmission for PUCCH transmission time i on active UL BWP b of carrier f of primary cell c.

[0257] In some implementations, it may be considered to introduce power boosting parameters via deltaMCS for PUCCH as well, as for PUSCH. The deltaMCS field in IEPUSCH-PowerControl, which is used to configure UE-specific power control parameters for PUSCH, indicates whether delta MCS should be applied. If the deltaMCS field in IEPUSCH-PowerControl is absent, the UE may use K in the delta_TFC formula for PUSCH. s = 0 is applied. As shown in the formula below, if the parameter deltaMCS is enabled for PUSCH, whether power boosting is performed depends on whether the deltaMCS flag is included and the channel conditions (e.g., Ks = 0 or 1.25 depending on the deltaMCS flag), if a modulation order other than QPSK can be applied to PUCCH, some implementations of this specification may introduce a similar parameter (e.g., deltaMCS-PUCCH) and, if the parameter is enabled, whether power boosting of PUCCH may be performed depends on whether the deltaMCS flag is included in DCI or MAC CE and the channel conditions.

[0258] > If the PUSCH transmission is over more than one layer, △ TF,b,f,c (i) = 0, else (else)

[0259] >

[0260] , where K sis provided by deltaMCS in PUSCH-PowerControl for each UL BWPb of each carrier f and serving cell c.

[0261] In some implementations, when UCIs with different modulation orders are mapped to a single PUCCH resource (e.g., when the power of a QPSK symbol and the power of a 16QAM symbol must be determined for a single PUCCH resource), a BPRE appropriate for the modulation order of each symbol may be applied.

[0262] The methods or implementations of the present specification described above may be applied independently, but may also be applied in the form of a combination (or merge) of some proposed methods. Information regarding whether the methods / implementations of the present specification described above are applied (or information regarding the rules of the methods / implementations of the present specification described above) may be specified for the BS to inform the UE through a predefined signal (e.g., a physical layer signal or a higher layer signal). In the present specification, the higher layer may include one or more of functional layers such as MAC, RLC, PDCP, RRC, and SDAP, for example.

[0263] According to some implementations of this specification, higher-order modulation can be applied to PUCCH for UCI transmission. According to some implementations of this specification, resource efficiency associated with UCI transmission can be increased.

[0264] Figure 11 illustrates the flow of uplink control information transmission in a UE according to some implementations of the present specification.

[0265] A UE may perform operations according to some implementations of the present disclosure in connection with transmitting uplink control information. The UE may include at least one transceiver; at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present disclosure. A processing device for the UE may include at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present disclosure. A computer-readable (non-transitory) storage medium may store at least one computer program comprising instructions that, when executed by at least one processor, cause the at least one processor to perform operations according to some implementations of the present disclosure. A computer program or computer program product may be recorded on at least one computer-readable (non-transitory) storage medium and may contain instructions that, when executed, cause (at least one processor) to perform operations according to some implementations of the present specification.

[0266] A method performed by the UE, or in the UE, the processing device, the computer-readable (non-transitory) storage medium, and / or the computer program product, wherein the operations include: receiving a configuration regarding at least one physical uplink control channel (PUCCH) resource; determining a PUCCH resource for transmission of uplink control information (UCI) based on the configuration (S1101); and determining a coding rate R calculated based on a first modulation order and N resource blocks, wherein the coding rate R is a maximum coding rate R set for the PUCCH resource. max Based on exceeding (S1103, Yes), obtaining modulation symbols of a second modulation order higher than the first modulation order based on the UCI (S1107), where N is the number of resource blocks set for the PUCCH resource; and transmitting the modulation symbols of the second modulation order.

[0267] In some implementations, the method or the operations are: wherein the coding rate R is greater than or equal to a maximum coding rate R set for the PUCCH resource. max Based on not exceeding (S1103, No), obtaining modulation symbols of the first modulation order based on the UCI (S1105); and transmitting the modulation symbols of the first modulation order.

[0268] Figure 12 illustrates the flow of receiving uplink control information at a BS according to some implementations of this specification.

[0269] A BS may perform operations according to some implementations of the present disclosure in connection with receiving uplink control information. The BS may include at least one transceiver; at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present disclosure. A processing device for the BS may include at least one processor; and at least one computer memory operably connected to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations according to some implementations of the present disclosure. A computer-readable (non-transitory) storage medium may store at least one computer program comprising instructions that, when executed by at least one processor, cause the at least one processor to perform operations according to some implementations of the present disclosure. A computer program or computer program product may be recorded on at least one computer-readable (non-transitory) storage medium and may contain instructions that, when executed, cause (at least one processor) to perform operations according to some implementations of the present specification.

[0270] A method performed by the BS, or in the BS, the processing device, the computer-readable (non-transitory) storage medium, and / or the computer program product, wherein the operations include: transmitting a configuration regarding at least one physical uplink control channel (PUCCH) resource; determining a PUCCH resource for receiving uplink control information (UCI) based on the configuration (S1201); and determining that a coding rate R calculated based on a first modulation order and N resource blocks is a maximum coding rate R set for the PUCCH resource. max Based on exceeding (S1203, Yes), it includes receiving (S1207) modulation symbols of a second modulation order higher than the first modulation order as the UCI, where N is the number of resource blocks set for the PUCCH resource.

[0271] Since the BS schedules UCI transmissions to the UE, it knows the UCI payload size to be received in the slot. Therefore, the BS can determine PUCCH resources based on the UCI payload size, etc.

[0272] In some implementations, the method or the operations are: wherein the coding rate R is greater than or equal to a maximum coding rate R set for the PUCCH resource. max Based on not exceeding (S1203, No), it may include receiving (S1205) modulation symbols of the first modulation order as the UCI.

[0273] In some implementations, the method or the operations may include obtaining the UCI by applying demodulation corresponding to the modulation order to the modulation symbols.

[0274] In some implementations related to FIG. 11 or FIG. 12, the modulation symbols of the second modulation order may be mapped within the N resource blocks.

[0275] In some implementations related to FIG. 11 or FIG. 12, the modulation symbols of the second modulation order may be cyclically mapped within the N resource blocks.

[0276] In some implementations related to FIG. 11 or FIG. 12, the modulation symbols of the second modulation order may be mapped once within the N resource blocks, and no symbol may be mapped to resource elements available for the UCI within the N resource blocks to which the modulation symbols of the second modulation order are not mapped.

[0277] In some implementations related to FIG. 11 or FIG. 12, the modulation symbols of the second modulation order are mapped to N_min resource blocks, where N_min may be the minimum number of resource blocks to which all the modulation symbols of the second modulation order are mapped.

[0278] In some implementations related to FIG. 11 or FIG. 12, the second modulation order is such that the coding rate of the UCI based on the N resource blocks is greater than the maximum coding rate R. max It may be the minimum modulation order that does not exceed .

[0279] In some implementations related to FIG. 11 or FIG. 12, the first modulation order may be a value associated with quadrature phase shift keying (QPSK).

[0280] In some implementations related to FIG. 11 or FIG. 12, the second modulation order may be applied to a specific type of UCI among different types of UCI within the UCI.

[0281] In some implementations related to FIG. 11 or FIG. 12, the particular type of UCI may be channel state information (CSI) Part 2.

[0282] As described above, the examples disclosed herein are provided to enable those skilled in the art to implement and practice the present disclosure. While the examples have been described above with reference to the examples of the present disclosure, those skilled in the art will appreciate that various modifications and variations may be made to the examples of the present disclosure. Accordingly, the present disclosure is not intended to be limited to the examples described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0283] Implementations of this specification can be used in wireless communication systems, BSs, user equipment, and other equipment.

Claims

1. In a method performed by a user device, Receive configuration regarding at least one physical uplink control channel (PUCCH) resource; Based on the above settings, PUCCH resources for transmitting uplink control information (UCI) are determined; The coding rate R calculated based on the first modulation order and N resource blocks is the maximum coding rate R set for the PUCCH resource. max Based on the UCI exceeding, obtain modulation symbols of a second modulation order higher than the first modulation order, where N is the number of resource blocks set for the PUCCH resource; and Including transmitting the modulation symbols of the second modulation order, method.

2. In paragraph 1, The modulation symbols of the second modulation order are mapped within the N resource blocks, method.

3. In paragraph 2, The modulation symbols of the second modulation order are cyclically mapped within the N resource blocks, method.

4. In paragraph 2, The modulation symbols of the second modulation order are mapped once within the N resource blocks, Among the resource elements available for the UCI within the N resource blocks, no symbol is mapped to the remaining resource elements, in which the modulation symbols of the second modulation order are not mapped. method.

5. In paragraph 1, The modulation symbols of the second modulation order are mapped to N_min resource blocks, where N_min is the minimum number of resource blocks to which all the modulation symbols of the second modulation order are mapped. method.

6. In paragraph 1, The second modulation order is such that the coding rate of the UCI based on the N resource blocks is the maximum coding rate R. max The minimum modulation order that does not exceed , method.

7. In paragraph 1, The above first modulation order is a value related to quadrature phase shift keying (QPSK). method.

8. In paragraph 1, The above second modulation order is applied to a specific type of UCI among different types of UCI within the UCI. method.

9. In paragraph 8, The above specific type of UCI is part 2 of channel state information (CSI), method.

10. At least one transmitter / receiver; at least one processor; and At least one computer memory operably connected to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations, said operations comprising: Receive configuration regarding at least one physical uplink control channel (PUCCH) resource; Based on the above settings, PUCCH resources for transmitting uplink control information (UCI) are determined; The coding rate R calculated based on the first modulation order and N resource blocks is the maximum coding rate R set for the PUCCH resource. max Based on the UCI exceeding, obtain modulation symbols of a second modulation order higher than the first modulation order, where N is the number of resource blocks set for the PUCCH resource; and Including transmitting the modulation symbols of the second modulation order, User device.

11. At least one processor; and At least one computer memory operably connected to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations, said operations comprising: Receive configuration regarding at least one physical uplink control channel (PUCCH) resource; Based on the above settings, PUCCH resources for transmitting uplink control information (UCI) are determined; The coding rate R calculated based on the first modulation order and N resource blocks is the maximum coding rate R set for the PUCCH resource. max Based on the UCI exceeding, obtain modulation symbols of a second modulation order higher than the first modulation order, where N is the number of resource blocks set for the PUCCH resource; and Including transmitting the modulation symbols of the second modulation order, Processing unit.

12. In a computer-readable non-transitory storage medium, The storage medium stores at least one program code comprising instructions that, when executed, cause at least one processor to perform operations, the operations comprising: Receive configuration regarding at least one physical uplink control channel (PUCCH) resource; Based on the above settings, PUCCH resources for transmitting uplink control information (UCI) are determined; The coding rate R calculated based on the first modulation order and N resource blocks is the maximum coding rate R set for the PUCCH resource. max Based on the UCI exceeding, obtain modulation symbols of a second modulation order higher than the first modulation order, where N is the number of resource blocks set for the PUCCH resource; and Including transmitting the modulation symbols of the second modulation order, Storage media.

13. In a method performed by a base station, Transmits configuration regarding at least one physical uplink control channel (PUCCH) resource; Based on the above settings, PUCCH resources for receiving uplink control information (UCI) are determined; and The coding rate R calculated based on the first modulation order and N resource blocks is the maximum coding rate R set for the PUCCH resource. max Based on exceeding, it includes receiving modulation symbols of a second modulation order higher than the first modulation order as the UCI, wherein N is the number of resource blocks set for the PUCCH resource. method.

14. In paragraph 13, The modulation symbols of the second modulation order are received within the N resource blocks. method.

15. In paragraph 14, The modulation symbols of the second modulation order are cyclically mapped within the N resource blocks, method.

16. In paragraph 14, The modulation symbols of the second modulation order are mapped once within the N resource blocks, Among the resource elements available for the UCI within the N resource blocks, no symbol is mapped to the remaining resource elements, in which the modulation symbols of the second modulation order are not mapped. method.

17. In paragraph 13, The modulation symbols of the second modulation order are mapped to N_min resource blocks, where N_min is the minimum number of resource blocks to which all the modulation symbols of the second modulation order are mapped. method.

18. In paragraph 13, The second modulation order is such that the coding rate of the UCI based on the N resource blocks is the maximum coding rate R. max The minimum modulation order that does not exceed , method.

19. In paragraph 13, The above first modulation order is a value related to quadrature phase shift keying (QPSK). method.

20. In paragraph 13, The above second modulation order is applied to a specific type of UCI among different types of UCI within the UCI. method.

21. In paragraph 20, The above specific type of UCI is part 2 of channel state information (CSI), method.

22. At least one transmitter / receiver; at least one processor; and At least one computer memory operably connected to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations, said operations comprising: Transmit at least the settings regarding physical uplink control channel (PUCCH) resources; Based on the above settings, PUCCH resources for receiving uplink control information (UCI) are determined; and The coding rate R calculated based on the first modulation order and N resource blocks is the maximum coding rate R set for the PUCCH resource. max Based on exceeding, it includes receiving modulation symbols of a second modulation order higher than the first modulation order as the UCI, wherein N is the number of resource blocks set for the PUCCH resource. Base station.

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