Method for transmitting and receiving channel state information in a wireless communication system and apparatus therefor

Abstract

The present invention relates to a method for transmitting and receiving channel state information in a wireless communication system and an apparatus therefor. Specifically, a method for transmitting, by a user equipment (UE), power measurement information related to a beam report in a wireless communication system includes receiving downlink control information (DCI) triggering a report of the power measurement information, receiving a downlink reference signal for the report of the power measurement information, and transmitting the power measurement information determined based on the received downlink reference signal to a base station. A minimum required time for the report of the power measurement information is calculated as a sum of a first minimum required time from a last timing of the downlink reference signal to a transmission timing of the power measurement information and a second minimum required time between reception of DCI triggering the downlink reference signal and the downlink reference signal, or (ii) is calculated based on a preconfigured threshold related to the report of the power measurement information.

Description

[0001] This application is a divisional application of patent application No. 201980004744.1 (International Application No. PCT / KR2019 / 010629), filed with the China Patent Office on March 26, 2020, with an international application date of August 21, 2019, entitled "Method and Apparatus for Transmitting and Receiving Channel State Information in a Wireless Communication System". Technical Field

[0002] This disclosure generally relates to wireless communication systems, and more specifically, to the transmission and reception of channel state information. Background Technology

[0003] Mobile communication systems have typically been developed to provide voice services while maintaining user mobility. These systems have gradually expanded their coverage from voice to data services, and then to high-speed data services. However, due to resource shortages in current mobile communication systems and increasing user demand for even faster services, there is a need to develop more advanced mobile communication systems.

[0004] The requirements for next-generation mobile communication systems may include support for increased data services, increased transmission rates per user, accommodation of a significantly increased number of connected devices, very low end-to-end latency, and high energy efficiency. To this end, various technologies such as small cell enhancement, dual connectivity, massive MIMO, in-band full-duplex, non-orthogonal multiple access (NOMA), support for ultra-wideband, and device networking have been investigated. Summary of the Invention

[0005] Technical issues

[0006] Embodiments of this disclosure enable the transmission and reception of channel state information (CSI).

[0007] Technical solution

[0008] In one aspect of this disclosure, a method for a UE to transmit power measurement information related to beam reporting in a wireless communication system may include: receiving downlink control information (DCI) that triggers the reporting of power measurement information; receiving a downlink reference signal for the reporting of power measurement information; and transmitting the power measurement information determined based on the received downlink reference signal to a base station. The minimum required time for reporting the power measurement information is (i) calculated as the sum of a first minimum required time from the last timing of the downlink reference signal to the transmission timing of the power measurement information and a second minimum required time between the DCI triggering the downlink reference signal and the reception of the downlink reference signal, or (ii) calculated based on a pre-configured threshold related to the reporting of power measurement information.

[0009] Furthermore, in one aspect of the method according to this disclosure, the reporting of power measurement information includes (i) the CSI-RS Resource Indicator (CRI) and the Reference Signal Received Power (RSRP), (ii) the Synchronization Signal Block (SSB) identifier and the RSRP, and (iii) no report.

[0010] Furthermore, in one aspect of the method according to this disclosure, when the sum of the first minimum required time and the second minimum required time is greater than a specific value, the minimum required time for reporting the power measurement information is calculated based on a pre-configured threshold related to the reporting of power measurement information.

[0011] Furthermore, in one aspect of the method according to this disclosure, the UE reports information for the second minimum required time to the base station as UE capability information.

[0012] Furthermore, in one aspect of the method according to this disclosure, the downlink reference signal is at least one of a channel state information reference signal (CSI-RS) and a synchronization signal block.

[0013] Furthermore, in one aspect of the method according to this disclosure, the subcarrier spacing for reporting power measurement information is 60 kHz or 120 kHz.

[0014] Furthermore, in one aspect of the method according to this disclosure, the number of CSI processing units for reporting power measurement information is 1.

[0015] In another aspect of this disclosure, a UE that transmits power measurement information related to beam reporting in a wireless communication system may include: a radio frequency (RF) unit; at least one processor; and at least one memory functionally connected to the at least one processor. The at least one memory may store instructions that, when executed by the at least one processor, perform operations including: receiving downlink control information (DCI) that triggers the reporting of power measurement information via the RF unit; receiving a downlink reference signal for the reporting of power measurement information via the RF unit; and transmitting power measurement information determined based on the received downlink reference signal to a base station via the RF unit. The minimum required time for reporting the power measurement information is (i) calculated as the sum of a first minimum required time from the last timing of the downlink reference signal to the transmission timing of the power measurement information and a second minimum required time between the DCI triggering the downlink reference signal and the reception of the downlink reference signal, or (ii) calculated based on a pre-configured threshold related to the reporting of power measurement information.

[0016] Furthermore, in a UE according to another aspect of this disclosure, the reporting of power measurement information includes (i) the CSI-RS resource indicator (CRI) and the reference signal received power (RSRP), (ii) the synchronization signal block (SSB) identifier and the RSRP, and (iii) any one of the following: no report.

[0017] Furthermore, in another aspect of the UE according to this disclosure, when the sum of the first minimum required time and the second minimum required time is greater than a specific value, the minimum required time for reporting power measurement information is calculated based on a pre-configured threshold related to the reporting of power measurement information.

[0018] Furthermore, in another aspect of the UE according to this disclosure, the UE reports information for the second minimum required time to the base station as UE capability information.

[0019] Furthermore, in another aspect of the UE according to this disclosure, the downlink reference signal is at least one of the channel state information reference signal (CSI-RS) and the synchronization signal block.

[0020] Furthermore, in another aspect of the UE according to this disclosure, the subcarrier spacing for reporting power measurement information is 60 kHz or 120 kHz.

[0021] Furthermore, in another aspect of the UE according to this disclosure, the number of CSI processing units for reporting power measurement information is 1.

[0022] In another aspect of this disclosure, a base station for receiving power measurement information related to beam reporting in a wireless communication system may include: a radio frequency (RF) unit; at least one processor; and at least one memory functionally connected to the at least one processor. The at least one memory may store instructions that, when executed by the at least one processor, perform operations including: transmitting downlink control information (DCI) that triggers the reporting of power measurement information via the RF unit; transmitting a downlink reference signal for the reporting of power measurement information via the RF unit; and receiving power measurement information determined based on the received downlink reference signal from a user equipment via the RF unit. The minimum required time for reporting the power measurement information is (i) calculated as the sum of a first minimum required time from the last timing of the downlink reference signal to the transmission timing of the power measurement information and a second minimum required time between the DCI triggering the downlink reference signal and the reception of the downlink reference signal, or (ii) calculated based on a pre-configured threshold related to the reporting of power measurement information.

[0023] Beneficial effects

[0024] According to some embodiments of this disclosure, the following effect is achieved: when the number of processing units of the terminal used for CSI reporting is less than the number of CSI reports configured and / or indicated by the base station in the CSI report, CSI calculation and CSI reporting can be performed effectively.

[0025] Furthermore, according to some embodiments of this disclosure, the following effects are achieved: in the case of L1-RSRP reports used for beam management and / or beam reporting, in addition to normal CSI reports, effective Z-value setting and effective utilization of processing units can be realized.

[0026] Furthermore, according to the embodiments of this disclosure, the following effects are achieved: by effectively selecting the minimum required time associated with L1-RSRP reporting, delays in L1-RSRP reporting can be reduced or the implementation complexity of terminals associated with L1-RSRP reporting can be reduced.

[0027] The effects that can be obtained through this disclosure are not limited to those described above, and various other effects will be clearly understood by those skilled in the art to which this disclosure pertains based on the following description. Attached Figure Description

[0028] Figure 1 This is a diagram illustrating an example of the overall structure of a novel radio (NR) system according to some embodiments of the present disclosure.

[0029] Figure 2 The illustration shows an example of the relationship between uplink (UL) frames and downlink (DL) frames in a wireless communication system according to some embodiments of the present disclosure.

[0030] Figure 3 An example of a frame structure in an NR system is shown.

[0031] Figure 4 An example of a resource grid supported in a wireless communication system according to an embodiment of the present disclosure is shown.

[0032] Figure 5 Examples of resource grids for each antenna port and parameter set according to some embodiments of this disclosure are shown.

[0033] Figure 6 Examples of self-contained structures according to some embodiments of this disclosure are shown.

[0034] Figure 7 An example of an operation flowchart illustrating a terminal performing a channel state information report according to some embodiments of the present disclosure is shown.

[0035] Figure 8An example of an operation flowchart illustrating a base station receiving a channel state information report according to some embodiments of the present disclosure is shown.

[0036] Figure 9 This illustrates an example of L1-RSRP reporting operations in a wireless communication system.

[0037] Figure 10 This illustrates another example of L1-RSRP reporting operations in a wireless communication system.

[0038] Figure 11 An example of an operation flowchart illustrating a terminal reporting channel state information according to some embodiments of the present disclosure is shown.

[0039] Figure 12 An example of an operation flowchart illustrating a base station receiving channel state information according to some embodiments of the present disclosure is shown.

[0040] Figure 13 Examples of signaling between a terminal and a base station in a wireless communication system for transmitting and receiving power measurement information related to beam reporting, according to some embodiments of the present disclosure, are shown.

[0041] Figure 14 The diagram is applied to the communication system 1 of this disclosure.

[0042] Figure 15 The illustrations are applicable to wireless devices disclosed herein.

[0043] Figure 16 The diagram shows a signal processing circuit used to transmit signals.

[0044] Figure 17 Another example of a wireless device applied to this disclosure is shown, which may vary depending on the usage example / service (see reference). Figure 14 It can be realized in various forms.

[0045] Figure 18 The illustration is applied to the handheld device of this disclosure. Detailed Implementation

[0046] Embodiments of this disclosure typically enable the transmission and reception of channel state information (CSI) in a wireless communication system.

[0047] According to some implementations, the disclosed technology is used to: when a terminal calculates CSI, allocate and / or assign one or more CSI reports configured and / or indicated by the base station to one or more processing units utilized by the corresponding terminal.

[0048] Furthermore, according to some implementations, the disclosed technology is used to allocate and / or assign a minimum required time (e.g., Z value) and / or a minimum number of processing units by the terminal for CSI reporting, which can be applied when executing CSI reports used for beam management and / or beam reporting, i.e., L1-RSRP reports.

[0049] In the following, some embodiments of this disclosure are described in detail with reference to the accompanying drawings. Figure 1 The detailed description disclosed herein is intended to describe some exemplary embodiments of this disclosure and is not intended to describe the only embodiments of this disclosure. The following detailed description includes further details to provide a complete understanding of this disclosure. However, those skilled in the art will understand that this disclosure can be implemented without these further details.

[0050] In some cases, to avoid obscuring the concepts of this disclosure, known structures and devices may be omitted, or they may be shown in block diagram form based on the core functions of each structure and device.

[0051] In the following text, downlink (DL) refers to communication from a base station to a terminal, while uplink (UL) refers to communication from a terminal to a base station. In the downlink, the transmitter can be part of the base station, and the receiver can be part of the terminal. In the uplink, the transmitter can be part of the terminal, and the receiver can be part of the base station. A base station can be represented as a first communication device, and a terminal can be represented as a second communication device. A base station (BS) can be replaced by terms such as fixed station, evolved Node B (eNB), next-generation Node B (gNB), base transceiver system (BTS), access point (AP), network (5G network), artificial intelligence (AI) system, roadside unit (RSU), or robot. Furthermore, the terminal can be fixed or mobile, and can be replaced by terms such as user equipment (UE), mobile station (MS), user terminal (UT), mobile subscriber station (MSS), subscriber station (SS), advanced mobile station (AMS), wireless terminal (WT), machine-type communication (MTC) equipment, machine-to-machine (M2M) equipment, device-to-device (D2D) equipment, vehicle, robot, or AI module.

[0052] The following technologies can be used in various radio access systems, such as CDMA, FDMA, TDMA, OFDMA, and SC-FDMA. CDMA can be implemented as a radio technology, such as Universal Terrestrial Radio Access (UTRA) or CDMA 2000. TDMA can be implemented as a radio technology, such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rate GSM Evolution (EDGE). OFDMA can be implemented as a radio technology, such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, or evolved UTRA (E-UTRA). UTRA is part of the Universal Mobile Telecommunications System (UMTS). The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of the evolved UMTS using E-UTRA (E-UMTS), while Advanced LTE (A) / LTE-A pro is an evolved version of 3GPP LTE. 3GPP New Radio or New Radio Access Technology (NR) is an evolution of 3GPP LTE / LTE-A / LTE-A pro.

[0053] For clarity, this disclosure primarily describes 3GPP communication systems (e.g., LTE-A, NR), but the spirit of the art is not limited thereto. LTE refers to technology from 3GPP TS 36.xxx version 8 onwards. Specifically, LTE technology from 3GPP TS 36.xxx version 10 onwards is designated LTE-A, and LTE technology from 3GPP TS 36.xxx version 13 onwards is designated LTE-A pro. 3GPP NR refers to technology from TS 38.xxx version 15 onwards. LTE / NR can be referred to as a 3GPP system. “xxx” indicates the detailed document number. LTE / NR can generally be referred to as a 3GPP system. For background techniques, terminology, and abbreviations used in the description of this disclosure, reference can be made to the descriptions in standard documents previously published. For example, the following documents may be consulted.

[0054] 3GPP LTE

[0055] -36.211: Physical Channels and Modulation

[0056] -36.212: Multiplexing and Channel Coding

[0057] -36.213: Physical Layer Process

[0058] -36.300: Overall Description

[0059] -36.331: Radio Resource Control (RRC)

[0060] 3GPP NR

[0061] -38.211: Physical Channel and Modulation

[0062] -38.212: Multiplexing and Channel Coding

[0063] -38.213: Physical layer process used for control

[0064] -38.214: Physical layer procedures for data

[0065] -38.300: General Description of NR and NG-RAN

[0066] -36.331: Radio Resource Control (RRC) Protocol Specification

[0067] With more communication devices requiring higher communication capacity, there is a demand for enhanced mobile broadband communication compared to existing radio access technologies. Furthermore, massive machine-type communication (MTC), which provides various services anytime, anywhere by connecting multiple devices and things, is also one of the main issues to be considered in next-generation communications. In addition, a communication system design is discussed, in which services / terminals sensitive to reliability and latency are considered. As mentioned above, next-generation radio access technologies considering enhanced mobile broadband communication (eMBB), massive MTC (Mmtc), ultra-reliable low-latency communication (URLLC), etc., are discussed. In this disclosure, for convenience, the corresponding technologies are referred to as NR. NR is an expression illustrating an example of 5G radio access technology (RAT).

[0068] New RAT systems, including NR, use OFDM or similar transmission technologies. These new RAT systems can follow OFDM parameters different from those used in LTE. Alternatively, the new RAT system can conform to the existing LTE / LTE-A parameter set, or it can have a larger system bandwidth (e.g., 100MHz). Alternatively, a single cell can support multiple parameter sets. That is, terminals operating with different parameter sets can coexist within a single cell.

[0069] The parameter set corresponds to a subcarrier spacing in the frequency domain. Different parameter sets can be defined by scaling the reference subcarrier spacing using an integer N.

[0070] The three main demand areas for 5G include (1) enhanced mobile broadband (eMBB), (2) massive machine type communications (mMTC) and (3) ultra-reliable low latency communications (URLLC).

[0071] Some use cases may require optimization across multiple domains, while others may focus on only one key performance indicator (KPI). 5G supports such a variety of use cases in a flexible and reliable manner.

[0072] eMBB enables basic mobile internet access to be significantly enhanced, covering a wide range of targeted tasks in the cloud or augmented reality, as well as media and entertainment applications. Data is one of the core strengths of 5G. Dedicated voice services may not appear in the 5G era for the first time. In 5G, voice is expected to be processed as an application using data connections simply provided by the communication system. The main reasons for the increase in traffic include the increase in content size and the increase in the number of applications requiring high data transmission rates. As more and more devices connect to the internet, streaming services (audio and video), conversational video, and mobile internet connectivity will be used more widely. So many applications need to keep the program's connectivity open at all times in order to push real-time information and notifications to users. Cloud storage and applications are rapidly increasing in mobile communication platforms, and can be applied to both business and entertainment. In addition, cloud storage is a special use case that can drive the growth of uplink data transmission rates. 5G is also being used for remote services in the cloud and requires lower end-to-end latency to maintain a superior user experience when using haptic interfaces. Entertainment, such as cloud gaming and video streaming, is another core element of the demand for increased mobile broadband performance. Entertainment is essential for smartphones and tablets anywhere, including in highly mobile environments such as trains, vehicles, and airplanes. Another use case is augmented reality and entertainment information search. In this case, augmented reality requires very low latency and instantaneous data volumes.

[0073] Furthermore, one of the most anticipated 5G use cases relates to the ability to seamlessly connect embedded sensors across all sectors, namely mMTC. The number of potential Internet of Things (IoT) devices is projected to reach 20.4 billion by 2020. Within the Industrial Internet of Things (IoT), 5G plays a key role, enabling smart cities, asset tracking, smart utilities, agriculture, and security infrastructure.

[0074] URLLC includes a new service that will transform industries such as remote control of critical infrastructure and autonomous vehicles through low-latency links with ultra-high reliability and availability. Reliability and latency levels are critical for smart grid control, industrial automation, robotics engineering, and drone control and tuning.

[0075] Describe multiple use cases in more detail.

[0076] 5G is a means of delivering streams rated at hundreds of megabits per second to gigabits per second, and can complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS). Beyond virtual reality and augmented reality, such high speeds are necessary for displaying televisions with resolutions of 4K or higher (6K, 8K, or higher). Virtual reality (VR) and augmented reality (AR) applications involve near-immersive motion. Specific applications may require special network configurations. For example, in the case of VR gaming, to minimize latency for gaming companies, it may be necessary to integrate core servers with the network operator's edge network servers.

[0077] It is anticipated that automobiles will become a significant new driving force for 5G, driven by numerous use cases in automotive mobile communications. For example, passenger entertainment requires high-capacity and highly mobile broadband. This is because future users will continue to expect high-quality connectivity regardless of their location and speed. Another use case in the automotive sector is augmented reality dashboards. Augmented reality dashboards enable drivers to identify objects in the dark, projected through the windshield, and overlay and display information spoken to the driver regarding the distance and movement of these objects. In the future, wireless modules will enable communication between vehicles, information exchange between vehicles and supporting infrastructure, and information exchange between vehicles and other connected devices, such as devices carried by pedestrians. Safety systems will demonstrate alternative processes for behavior, allowing drivers to drive more safely and reducing the risk of accidents. The next step will be remotely controlled or autonomous vehicles. This requires highly reliable and extremely fast communication between different autonomous vehicles and between vehicles and infrastructure. In the future, autonomous vehicles may perform all driving activities, and drivers will only need to focus on traffic anomalies that the vehicle itself cannot perceive. The technical requirements for autonomous vehicles include ultra-low latency, ultra-high speed, and high reliability, enabling traffic safety to reach levels unattainable by humans.

[0078] Smart cities and smart homes, as mentioned in the context of a smart society, will be embedded as high-density wireless sensor networks. Distributed networks of smart sensors will identify conditions for cost and energy efficiency maintenance in cities or homes. A similar configuration can be implemented for each household. Temperature sensors, windows, heating controllers, burglar alarms, and home appliances are all wirelessly connected. Many of these sensors are typically low-data-speed, low-energy, and low-cost. However, for example, real-time high-definition video may be required in certain types of monitoring equipment.

[0079] The consumption and distribution of energy, including heat or gases, require automated control through distributed sensor networks, as these are highly distributed. Smart grids collect information and interconnect such sensors using digital information and communication technologies, enabling the sensors to act based on that information. This information can include supplier and consumer behavior, thus smart grids can improve fuel distribution, such as electricity, in ways that improve efficiency, reliability, economics, production sustainability, and automation. A smart grid can be thought of as a network of different sensors with low latency.

[0080] The health sector includes many applications that could benefit from mobile communications. Communication systems can support telemedicine, enabling the delivery of clinical medical care from remote locations. This could help reduce distance barriers and improve access to healthcare services that are unavailable in remote agricultural areas. It can also be used to save lives in medical and emergency situations. Mobile communication-based wireless sensor networks can provide remote monitoring and sensing of parameters such as heart rate and blood pressure.

[0081] Wireless and mobile communications are becoming increasingly important in industrial applications. The installation and maintenance of electrical wires are costly. Therefore, in many industrial sectors, the possibility of replacing wires with radio links capable of reconfiguring cables presents an attractive opportunity. However, to realize this opportunity, wireless connectivity needs to operate with similar latency, reliability, and performance to cables, while also simplifying its management. Low latency and extremely low error probability are new requirements for 5G connectivity.

[0082] Logistics and freight tracking are important use cases for mobile communications, enabling the tracking of inventory and packages anywhere using location-based information systems. Logistics and freight tracking use cases typically require lower data speeds but demand wide coverage areas and reliable location information.

[0083] Definition of terminology

[0084] eLTE eNB: eLTE eNB is an evolution of eNB that supports connectivity for EPC and NGC.

[0085] gNB: In addition to connecting to NGC, it also supports NR nodes.

[0086] New RAN: Radio access networks that support NR or E-UTRA or interact with NGC.

[0087] Network slicing: Network slicing is a network defined by operators to provide solutions optimized for specific market scenarios that require specific requirements and range between terminals.

[0088] Network function: A network function is a logical node in a network infrastructure, which has a well-defined external interface and a well-defined functional operation.

[0089] NG-C: Control plane interface for the NG2 reference point between the new RAN and NGC.

[0090] NG-U: User plane interface for the NG3 reference point between the new RAN and NGC.

[0091] Non-standalone NR: where the gNB requires an LTE eNB as the anchor for the control plane connection to the EPC or requires an eLTE eNB as the anchor for the control plane connection to the NGC.

[0092] Non-standalone E-UTRA: The eLTE eNB requires a gNB as the anchor for the control plane connection to the NGC in its deployment configuration.

[0093] User plane gateway: Termination point of NG-U interface

[0094] General System

[0095] Figure 1 This is a diagram illustrating an example of the overall structure of a novel radio (NR) system according to some embodiments of the present disclosure.

[0096] refer to Figure 1 NG-RAN is configured with a gNB, which provides NG-RA user plane (new AS sublayer / PDCP / RLC / MAC / PHY) and control plane (RRC) protocols for user equipment (UE).

[0097] gNBs are connected to each other via the Xn interface.

[0098] gNB is also connected to NGC via the NG interface.

[0099] More specifically, the gNB connects to the Access and Mobility Management Function (AMF) via the N2 interface and to the User Plane Function (UPF) via the N3 interface.

[0100] New RAT (NR) parameter set and frame structure

[0101] In NR systems, multiple parameter sets can be supported. These parameter sets can be defined by the subcarrier spacing and cyclic prefix (CP) overhead. The basic subcarrier spacing can be scaled to an integer N (or...). This allows us to derive the spacing between multiple subcarriers. Additionally, although it is assumed that very low subcarrier spacing is not used at very high subcarrier frequencies, the set of parameters to be used can be selected regardless of the frequency band.

[0102] In addition, the NR system can support various frame structures based on multiple parameter sets.

[0103] The following section describes the set of orthogonal frequency division multiplexing (OFDM) parameters and frame structures that can be considered in NR systems.

[0104] Multiple OFDM parameter sets supported by the NR system can be defined as shown in Table 1.

[0105] [Table 1]

[0106]

[0107] Regarding the frame structure in the NR system, the size of each field in the time domain is represented as multiple... The time unit. In this case. and DL and UL transmissions are configured to have A radio frame is a radio frame that spans a certain range. A radio frame consists of ten subframes, each of which has... The range. In this case, there can be a set of UL frames and a set of DL frames.

[0108] Figure 2 The diagram illustrates the relationship between UL frames and DL frames in a wireless communication system according to some embodiments of the present disclosure.

[0109] like Figure 2 As illustrated, the UL frame number I from the user equipment (UE) needs to precede the start of the corresponding DL frame in the UE. It was sent.

[0110] Regarding parameter sets The time slots are in the subframe in exponential order. Number them, and in radio frames, exponentiate them. To number them. A time slot consists of consecutive OFDM symbols. The composition is determined based on the parameter set and time slot configuration used. Time slots in subframes The start of OFDM symbols in the same subframe The beginnings are aligned in time.

[0111] All terminals cannot perform both sending and receiving simultaneously, which means that all OFDM symbols in either the downlink or uplink time slots cannot be used.

[0112] Table 2 shows the number of OFDM symbols in each time slot during normal CP ( ), the number of time slots per radio frame ( ) and the number of time slots in each subframe ( Table 3 shows the number of OFDM symbols in each slot of the extended CP, the number of slots in each radio frame, and the number of slots in each subframe.

[0113] [Table 2]

[0114]

[0115] [Table 3]

[0116]

[0117] Figure 3 An example of a frame structure in an NR system is shown. Figure 3 This is for convenience only and does not limit the scope of this disclosure.

[0118] Table 3 is an example, in which = 2, that is, the subcarrier spacing (SCS) is 60kHz. Referring to Table 2, one subframe (or frame) can include 4 time slots. Figure 3 The 1 subframe = {1,2,4} slots shown is an example, and the number of slots that can be included in a 1 subframe can be defined as shown in Table 2.

[0119] Furthermore, microslots can be configured with 2, 4, or 7 symbols, and can be configured with more or fewer symbols than 2, 4, or 7 symbols.

[0120] Regarding physical resources in an NR system, antenna ports, resource grids, resource elements, resource blocks, and carrier components can be considered.

[0121] The physical resources described above that can be considered in an NR system will be described in more detail below.

[0122] First, regarding antenna ports, an antenna port is defined such that a channel through which a symbol on one antenna port is transmitted can be inferred from another channel through which a symbol on the same antenna port is transmitted. Two antenna ports can be in a quasi-co-located or quasi-co-located (QC / QCL) relationship when the macro-scale properties of a channel through which a symbol on one antenna port is received can be inferred from another channel through which a symbol on another antenna port is transmitted. In such a case, the macro-scale properties can include at least one of delay spread, Doppler spread, Doppler shift, average gain, and average delay.

[0123] Figure 4 The illustration shows an example of a resource grid supported in a wireless communication system according to some embodiments of the present disclosure.

[0124] refer to Figure 4 The resource grid consists of frequency domain Each subframe consists of 14 subcarriers. 2 µ It consists of OFDM symbols, but this disclosure is not limited thereto.

[0125] In the NR system, through the Subcarriers and One or more resource grids composed of OFDM symbols are used to describe the transmitted signal, wherein, The above. It indicates the maximum transmission bandwidth, and it can be changed not only between parameter sets, but also between UL and DL.

[0126] In this case, such as Figure 5 As shown, it can be targeted at parameter sets. Configure a resource grid for antenna port p.

[0127] Figure 5 The illustration shows an example of a resource grid for each antenna port and parameter set according to some embodiments of this disclosure.

[0128] For parameter set Each element of the resource grid for antenna port p is indicated as a resource element and can be uniquely identified by an index pair. Identification. In such a case, It is an index in the frequency domain, and Indicates the position of symbols within a subframe. Index pairs are used to indicate resource elements within a time slot. Under such circumstances, .

[0129] For parameter set and resource elements of antenna port p With complex values Correspondingly, if there is no risk of confusion or if a specific antenna port or parameter set is not specified, index p can be discarded. As a result, complex values ​​can be or .

[0130] Furthermore, physical resource blocks are defined in the frequency domain. A series of consecutive subcarriers.

[0131] Point A serves as the common reference point for the resource block grid and can be obtained as follows.

[0132] - The offsetToPointA for PCell downlink indicates the frequency offset between the lowest subcarrier of the lowest resource block that overlaps with the SS / PBCH block used for the UE to perform initial cell selection and point A, and is represented as a resource block cell under the assumption that a 15 kHz subcarrier spacing is used for FR1 and a 60 kHz subcarrier spacing is used for FR2.

[0133] -absoluteFrequencyPointA indicates the frequency location of point A as represented by the absolute radio frequency channel number (ARFCN).

[0134] For subcarrier spacing configuration In the frequency domain, public resource blocks are numbered from 0 upwards.

[0135] For subcarrier spacing configuration The center of subcarrier 0 of common resource block 0 is the same as "point A". This applies to the common resource block numbering in the frequency domain. and subcarrier spacing configuration The resource elements (k, l) can be given as shown in Equation 1 below.

[0136] [Equation 1]

[0137]

[0138] in this case, It can be relatively defined at point A, such that This corresponds to a subcarrier centered at point A. The physical resource block (BWP) ranges from 0 to... serial number. This is the BWP number. In BWP i, it refers to the physical resource block. and public resource blocks The relationship between them can be given by Equation 2 below.

[0139] [Equation 2]

[0140]

[0141] in this case, It can be the public resource block that BWP starts relative to public resource block 0.

[0142] Bandwidth Component (BWP)

[0143] NR systems can support each component carrier (CC) up to a maximum of 400 MHz. If a terminal operating within such a wideband CC operates with its RF turned on for all CCs, terminal battery consumption may increase. Alternatively, if several use cases operating within a wideband CC are considered (e.g., eMBB, URLLC, Mmtc, V2X), different sets of parameters (e.g., subcarrier spacing) can be supported for each frequency band within the corresponding CC. Alternatively, the maximum bandwidth capability can differ for each terminal. The base station can instruct the terminal to operate only within a portion of the bandwidth of the wideband CC, rather than the entire bandwidth, by taking this capability into account. For convenience, the corresponding portion of bandwidth is defined as a bandwidth portion (BWP). A BWP can be configured with contiguous resource blocks (RBs) on the frequency axis and can correspond to a set of parameters (e.g., subcarrier spacing, CP length, slot / microslot duration).

[0144] Simultaneously, a base station can configure multiple Base Window (BWP) within a single Control Center (CC) configured in a terminal. For example, in a PDCCH monitoring slot, a BWP occupying a relatively small frequency domain can be configured, and PDSCH indicated in the PDCCH can be scheduled on a BWP larger than the configured BWP. Alternatively, if a UE is congested in a specific BWP, some UEs can be configured in other BWPs for load balancing. Alternatively, some spectrum at the center of the full bandwidth can be excluded by considering inter-cell interference cancellation between neighboring cells, and BWPs on both sides can be configured in the same time slot. That is, a base station can configure at least one DL / UL BWP in a terminal associated with a broadband CC, and can activate at least one of the configured DL / UL BWPs at a specific time (via L1 signaling, MAC CE, or RRC signaling). A handover to another configured DL / UL BWP can be indicated (via L1 signaling, MAC CE, or RRC signaling), or based on a timer, a handover to a predetermined DL / UL BWP can be performed when the timer value expires. In this scenario, the active DL / UL BWP is defined as the active DL / UL BWP. However, if the terminal is in the initial access process or before establishing an RRC connection, it may not receive the DL / UL BWP configuration. In this case, the terminal's assumed DL / UL BWP is defined as the initially active DL / UL BWP.

[0145] Self-contained structure

[0146] In NR systems, the Time Division Duplex (TDD) architecture is designed to handle both uplink (UL) and downlink (DL) data transmission within a single time slot (or subframe). This is done to minimize data transmission latency in TDD systems. This architecture can be referred to as a self-contained architecture or a self-contained time slot.

[0147] Figure 6 Examples of self-contained structures according to some embodiments of the present invention are shown. Figure 6 This is for convenience only and does not limit the scope of this disclosure.

[0148] refer to Figure 6 As with traditional LTE, this assumes that a transmission unit (e.g., a time slot, a subframe) is configured with 14 orthogonal frequency division multiplexing (OFDM) symbols.

[0149] exist Figure 6 In this context, area 602 refers to the downlink control area, while area 604 refers to the uplink control area. Furthermore, areas other than areas 602 and 604 (i.e., areas not specifically designated) can be used for the transmission of either downlink or uplink data.

[0150] In other words, uplink control information and downlink control information can be transmitted within a single self-contained time slot. In contrast, in the case of data, either uplink data or downlink data can be transmitted within a single self-contained time slot.

[0151] if Figure 6 The structure shown is used so that downlink and uplink transmissions can be performed sequentially in a self-contained time slot, and downlink data transmission and uplink ACK / NACK reception can be performed.

[0152] Therefore, when errors occur during data transmission, the time consumed until the data is retransmitted can be reduced. Consequently, latency associated with data forwarding can be minimized.

[0153] In self-contained time-slot structures, such as Figure 6 A time interval is required for the process of a base station (eNodeB, eNB, gNB) and / or a terminal (User Equipment (UE)) changing from transmit mode to receive mode or vice versa. Regarding the time interval, some OFDM symbols can be configured as guard periods (GPs) when performing uplink transmissions after downlink transmissions in a self-contained time slot.

[0154] Regarding CSI measurements and / or reporting, the following is discussed.

[0155] As used herein, parameter Z refers to the minimum required time for the terminal to execute a CSI report, for example, the minimum duration (or time interval) from the timing of the DCI that the terminal receives the scheduled CSI report until the timing of the terminal executing the actual CSI report.

[0156] Furthermore, the time offset of the CSI reference resource can be derived based on the minimum duration (referred to herein as Z') from the timing start of receiving the measurement resource (e.g., CSI-RS) related to the CSI report from the terminal until the terminal executes the actual CSI report, and based on the set of parameters (e.g., subcarrier spacing) used for CSI delay.

[0157] Specifically, the calculation (or operation) of CSI can be defined with Z and Z' values ​​as shown in the examples in Tables 4 through 7. In this case, Z is only related to non-periodic CSI reports. For example, the Z value can be expressed as the sum of the decoding time for DCI (scheduling CSI reports) and the CSI processing time (e.g., Z', which will be described later). Furthermore, in the case of the Z value for a normal terminal, it can be assumed that the Channel State Information Reference Signal (CSI-RS) is positioned after the last symbol of the PDCCH symbol (i.e., the symbol of the PDCCH in which DCI is transmitted).

[0158] Furthermore, as discussed above, parameter Z' can refer to the minimum duration (or time interval) from the timing of the terminal receiving measurement resources (i.e., CMR, IMR) (e.g., CSI-RS) related to the CSI report to the timing of the terminal executing the actual CSI report. Typically, as shown in the examples in Table 4, the relationship between (Z, Z') and the parameter set and CSI delay can be described.

[0159] [Table 4]

[0160]

[0161] In addition, Tables 5 and 6 show examples of CSI calculation times for standard UEs and CSI calculation times for advanced UEs, respectively. Tables 5 and 6 are merely examples and are not intended to be limiting.

[0162] [Table 5]

[0163]

[0164] [Table 6]

[0165]

[0166] In addition, regarding the above CSI delay, it can be assumed that when N CSI reports are triggered, up to X CSI reports will be calculated within a given time. In this case, X can be based on UE capability information. In addition, regarding the above Z (and / or Z’), the terminal can be configured to ignore the DCI that schedules CSI reports whose scheduling does not meet the condition related to the Z value.

[0167] In addition, information related to CSI delay (i.e., information for (Z, Z’)), such as the above information, can be reported by the terminal as UE capability information (to the base station).

[0168] For example, if an aperiodic CSI report only through PUSCH configured for a single CSI report is triggered, the terminal may not expect that it will receive scheduling downlink control information (DCI) with a symbol offset such as "M-L-N < Z". In addition, if an aperiodic channel state information reference signal (CSI-RS) is used for channel measurement and has a symbol offset such as "M-O-N < Z", the terminal may not expect that it will receive scheduling DCI.

[0169] In the above description, L can indicate the last symbol of the PDCCH that triggers an aperiodic report, M can indicate the start symbol of the PUSCH, and N can indicate the timing advance (TA) value of the symbol unit. In addition, O can mean the nearest symbol among the last symbol of the aperiodic CSI-RS for the channel measurement resource (CMR), the last symbol of the aperiodic non-zero power (MZP) CSI-RS for the interference measurement resource (IMR) (if any), and the last symbol of the aperiodic channel state information interference measurement (CSI-IM) (if any). CMR can mean the RS and / or resources for channel measurement, while IMR can mean the RS and / or resources for interference measurement.

[0170] Regarding the above CSI reports, a situation where CSI reports conflict with each other may occur. In this case, the conflict of CSI reports may mean that the time occupancy of the physical channels scheduled to transmit CSI reports overlaps in at least one symbol and is transmitted on the same carrier. For example, if two or more CSI reports conflict with each other, one CSI report can be executed according to the following rules. In this case, an order technique of first applying Rule #1 and then applying Rule #2 can be used to determine the priority of the CSI reports. Rule #2, Rule #3, and Rule #4 of the following rules can only be applied to all periodic reports and semi-persistent reports for PUCCH.

[0171] - Rule #1: From a time-domain operational perspective, Aperiodic (AP) CSI > PUSCH-based Semi-Persistent (SP) CSI > PUCCH-based Semi-Persistent CSI > Periodic (P) CSI

[0172] - Rule #2: In terms of CSI content, CSI related to beam management (e.g., beam reporting) > CSI related to CSI acquisition.

[0173] - Rule #3: In terms of cell ID, primary cell (PCell) > primary / secondary cell (PSCell) > different IDs (in ascending order)

[0174] - Rule #4: On the view of CSI report-related IDs (e.g., csiReportID), follow the order of increasing ID index.

[0175] Furthermore, regarding the aforementioned CSI reporting, CSI processing units (e.g., CPUs) can be defined. For example, a terminal supporting X CSI calculations (e.g., based on UE capability information 2-35) can mean that the terminal utilizes X processing units to report CSI. In this case, the number of CSI processing units can be represented as K_s.

[0176] For example, in the case of aperiodic CSI reports using aperiodic CSI-RS (where a single CSI-RS resource is configured in the resource set used for channel measurements), a CSI processing unit can be maintained in the following state: after the PDCCH is triggered, the symbols from the first OFDM symbol to the last symbol of the PUSCH carrying the CSI report have been occupied.

[0177] For example, if N CSI reports are triggered in a time slot (each configured with a single CSI-RS resource in the resource set for channel measurement), but the terminal only has M unused CSI processing units, then the corresponding terminal can be configured to update (i.e., report) only M of the N CSI reports.

[0178] Furthermore, regarding the aforementioned X CSI calculations, the UE capability can be configured to support either Type A CSI processing capability or Type B CSI processing capability.

[0179] For example, suppose an aperiodic CSI trigger state (A-CSI trigger state) triggers N CSI reports (in this case, each CSI report is associated with (Z_n, Z'_n)) and has unoccupied CSI processing units.

[0180] In the case of Type A CSI processing capability, if according to If the time interval between the first symbol of PUSCH and the last symbol associated with aperiodic CSI-RS / aperiodic CSI-IM does not have sufficient CSI calculation time, the terminal may not expect any of the triggered CSI reports to be updated. Furthermore, the terminal may ignore scheduling with less than... The scheduling offset of PUSCH's DCI.

[0181] With Type B CSI processing capabilities, if there is insufficient CSI calculation time for the PUSCH scheduling offset based on the corresponding Z' value in the report, the terminal may not expect the CSI report to be updated. Furthermore, for other reports, the terminal may ignore DCIs for PUSCHs with scheduling offsets less than any of the Z values.

[0182] As another example, CSI reports based on periodic and / or semi-persistent CSI-RS can be assigned to CSI processing units according to either Type A or Type B methods. Type A methods may assume a serial CSI processing implementation, while Type B methods may assume a parallel CSI processing implementation.

[0183] In the Type A method, in the case of periodic and / or semi-persistent CSI reports, the CSI processing unit may occupy symbols from the first symbol of the CSI reference resource of the periodic and / or semi-persistent CSI report to the first symbol of the physical channel carrying the corresponding CSI report. In the case of non-periodic CSI reports, the CSI processing unit may occupy symbols from the first symbol after the PDCCH that triggers the corresponding CSI report to the first symbol of the physical channel carrying the corresponding CSI report.

[0184] In the Type B approach, periodic or non-periodic CSI reporting settings based on periodic and / or semi-persistent CSI-RS can be assigned to one or K_s CSI processing units and can always occupy one or K_s CSI processing units. Furthermore, an active semi-persistent CSI reporting setting can be assigned to one or K_s CSI processing units and can occupy one or K_s CSI processing units until it is deactivated. When semi-persistent CSI reporting is deactivated, the CSI processing unit can be used for other CSI reporting.

[0185] Furthermore, in the case of the above-mentioned CSI processing capabilities, when the number of CSI processing units occupied by periodic and / or semi-persistent CSI reports exceeds the number (X) of simultaneous CSI calculations based on the UE's capabilities, the terminal may not expect periodic and / or semi-persistent CSI reports to be updated.

[0186] First Implementation Method

[0187] In this embodiment, an example of assigning, allocating, and / or occupying CSI processing units configured for one or more CSI reports is described.

[0188] Regarding the aforementioned processing unit (e.g., CPU), rules need to be considered for determining which CSI will use the CSI processing unit, i.e., which CSI will be assigned to the CSI processing unit. In this disclosure, with respect to the CSI processing unit, CSI will refer to or represent a CSI report.

[0189] For ease of description, in this embodiment, it is assumed that the terminal has X CSI processing units, XM of the X CSI processing units are occupied (i.e., used for) CSI calculation, and M CSI processing units are not occupied. That is, M can refer to the number of CSI processing units not occupied by CSI reports.

[0190] In this scenario, at a specific timing (e.g., a specific OFDM symbol), N CSI reports greater than M can begin to occupy the CSI processing unit.

[0191] For example, when the CSI processing unit occupancy (i.e., usage) of 3 CSI reports begins with M=2 in the nth OFDM symbol, only 2 of the 3 CSI reports occupy the CSI processing unit. In this case, the CSI processing unit is not allocated (or assigned) to the remaining CSI report, and the CSI of the corresponding CSI report cannot be calculated. Regarding the uncalculated CSI, a technique can be considered that defines (or stipulates) to re-report the most recently calculated and / or reported CSI, or defines (or stipulates) to report a preset specific CSI value, or defines (or stipulates) not to perform reporting for the corresponding CSI report.

[0192] In the following description, this embodiment utilizes the following example technique regarding the priority of which CSI report is first assigned to a CSI processing unit when a contention for the occupancy of a CSI processing unit occurs (hereinafter referred to as the priority of CSI processing unit occupancy). Furthermore, in addition to the example described below, the priority of CSI processing unit occupancy can be configured in the same or similar manner in the aforementioned CSI conflict.

[0193] Example 1)

[0194] The priority of CSI processing unit occupancy can be determined based on latency requirements.

[0195] In an NR system, all types of CSI can be classified as either low-latency CSI or high-latency CSI. In this context, low-latency CSI can refer to CSIs with lower terminal complexity in CSI computation, while high-latency CSI can refer to CSIs with higher terminal complexity in CSI computation. For example, when a CSI is low-latency, because the computational load is small, the corresponding CSI occupies a shorter time in the CSI processing unit compared to a high-latency CSI.

[0196] Low-latency CSI can be configured to take priority over high-latency CSI in occupying CSI processing units. This has the advantage that when low-latency and high-latency CSI conflict, the occupancy time of CSI processing units can be minimized by prioritizing low-latency CSI, and the corresponding CSI processing unit can be quickly used for other CSI calculations.

[0197] Alternatively, high-latency CSI can be configured to take precedence over low-latency CSI in occupying CSI processing units. This is because high-latency CSI has higher computational complexity than low-latency CSI and can provide more and / or more accurate channel information.

[0198] Example 2)

[0199] The priority of CSI processing unit occupancy can be determined based on the end time of CSI processing unit occupancy.

[0200] CSIs with short CSI processing unit occupancy end times can be configured to prioritize CSI processing units.

[0201] Although the start time of CSI processing unit occupancy is the same for multiple CSI (reports), the end time of occupancy may differ. For example, even if low-latency or high-latency CSIs are the same, the end time of occupancy for each CSI report may vary depending on the time-domain behavior (e.g., periodic, semi-persistent, aperiodic) of the channel used for CSI calculation and / or the CSI-RS and / or CSI-Imdml used to measure its interference. The advantage is that because CSIs with shorter end times of occupancy are prioritized, the occupancy time of CSI processing units can be minimized, and the corresponding CSI processing units can be used quickly for CSI calculation.

[0202] Alternatively, CSIs with longer (i.e., later) CSI processing unit occupancy end times can be configured to have priority in occupying CSI processing units. This is because CSIs with longer occupancy end times require longer computation time and can provide more and / or more accurate channel information.

[0203] Example 3)

[0204] Priority for occupancy of CSI processing units can be determined based on the time-domain behavior of reference signals used for channel measurements (e.g., CSI-RS) and / or reference signals used for interference measurements (e.g., CSI-IM).

[0205] For ease of description, in this example, regarding CSI reporting, we assume that the reference signal used for channel measurements is CSI-RS and the reference signal used for interference measurements is CSI-IM.

[0206] CSI-RS and / or CSI-IM can be transmitted and received in three types: periodic, semi-persistent, or aperiodic. CSI calculated based on periodic CSI-RS and / or CSI-IM offers numerous opportunities to measure channel and / or interference. Therefore, CSI calculated based on aperiodic CSI-RS and / or CSI-IM, rather than periodic CSI-RS and / or CSI-IM, can preferably occupy the CSI processing unit preferentially.

[0207] Therefore, the priority of CSI processing unit occupancy can be determined in the following order: CSI based on aperiodic CSI-RS and / or CSI-IM, CSI based on semi-persistent CSI-RS and / or CSI-IM, and CSI based on periodic CSI-RS and / or CSI-IM. That is, the priority of CSI processing unit occupancy can be determined in the order of "CSI based on aperiodic CSI-RS and / or CSI-IM > CSI based on semi-persistent CSI-RS and / or CSI-IM > CSI based on periodic CSI-RS and / or CSI-IM". In addition to the priority for CSI processing unit occupancy, this priority can be extended and applied to the aforementioned CSI conflict rules.

[0208] Alternatively, priority can be determined in the order of periodic CSI-RS and / or CSI-IM, semi-persistent CSI-RS and / or CSI-IM, and non-periodic CSI-RS and / or CSI-IM.

[0209] Example 4)

[0210] The priority of CSI processing unit occupancy can be determined based on time-domain measurement behavior.

[0211] For example, the priority of CSI processing unit occupancy can be determined based on whether CSI measurement-related restrictions have been configured, i.e., measurement restrictions.

[0212] When a terminal receives CSI-RS and / or CSI-IM within a specific timeframe when the measurement restriction becomes ON and generates a CSI by measuring CSI-RS and / or CSI-IM, the corresponding CSI can be configured to occupy the CSI processing unit with priority over CSI measured when the measurement restriction becomes OFF. In addition to the priority for occupying the CSI processing unit, this priority can be extended and applied to the aforementioned CSI conflict rules.

[0213] Alternatively, when the terminal generates a CSI while the measurement limit is off, the corresponding CSI can be configured to take priority over the CSI measured when the measurement limit is on to occupy the CSI processing unit.

[0214] Example 5)

[0215] The occupancy priority of the CSI processing unit can be determined based on the aforementioned Z value and / or Z' value. In this case, Z is only related to non-periodic CSI reports and can refer to the minimum time (or time interval) from the timing of the terminal receiving the DCI that schedules the CSI report to the timing of the terminal executing the actual CSI report. Furthermore, Z' can refer to the minimum time (or time interval) from the timing of the terminal receiving the measurement resources (i.e., CMR, IMR) (e.g., CSI-RS) related to the CSI report to the timing of the terminal executing the actual CSI report.

[0216] For each CSI, the subcarrier spacing (SCS) and delay-related configurations can be different. Therefore, the Z value and / or Z' value can be set differently for each CSI.

[0217] For example, when selecting M out of N CSI reports to be scheduled in the terminal (i.e., M CSI reports to be assigned to CSI processing units), CSIs with small Z values ​​and / or Z' values ​​can be configured to preferentially occupy CSI processing units (Example 5-1 below). CSI reports with small Z values ​​and / or Z' values ​​occupy CSI processing units for a short period of time, and are therefore efficient because the corresponding CSI processing units can be used to calculate new CSIs.

[0218] Generally, CSIs with smaller subcarrier spacings tend to have smaller Z-values ​​and / or Z'-values, thus they can have higher priority in CSI processing unit occupancy. Furthermore, low-latency CSIs can have higher priority in terms of CSI processing unit occupancy because the Z-value and / or Z'-value decrease as the latency decreases. Additionally, configurations can be implemented such that the occupancy order of CSI processing units is determined by comparing the various delays, and that CSI processing units with smaller subcarrier spacings are occupied when delays are the same. Conversely, configurations can be implemented such that the occupancy order of CSI processing units is determined by comparing subcarrier spacings, and that CSI processing units with lower latency are occupied when subcarrier spacings are the same.

[0219] For another example, when selecting M out of N CSI reports to be scheduled in the terminal (i.e., M CSI reports to be assigned to CSI processing units), CSIs with large Z values ​​and / or Z' values ​​can be configured to preferentially occupy CSI processing units (Example 5-2 below). CSI reports with large Z values ​​and / or Z' values ​​occupy CSI processing units for a longer period of time; however, despite the longer computation time, they can be assumed to be more important CSIs because the corresponding CSIs have more accurate and more channel information.

[0220] Regarding Example 5, one could consider selectively applying the techniques of Example 5-1 and Example 5-2 based on the given conditions.

[0221] First, the terminal selects M CSIs by prioritizing those with large Z values. If a CSI calculation is not performed because the Z value is greater than the processing time given by the scheduler, the terminal may select M CSIs assuming that CSIs with small Z values ​​have priority in occupying CSI processing units. Otherwise, the terminal may select M CSIs assuming that CSIs with large Z values ​​have priority in occupying CSI processing units. In this case, processing time can refer to the time from the triggering time of the CSI report to the execution of the actual CSI report, the time from the CSI reference resource to the execution of the actual CSI report, or the time from the last symbol of CSI-RS and / or CSI-IM to the execution of the actual CSI report.

[0222] Alternatively, after the terminal determines the CSIs that meet the given processing time from among the N CSIs, it can configure the determined CSIs into a valid CSI set, and can first select M CSIs with large Z values ​​from the configured valid CSI set. Alternatively, the terminal can first select M CSIs with small Z values ​​from the configured valid CSI set. Because CSIs not included in the valid CSI set are uncalculated or unreported CSIs, it is efficient for the terminal to exclude uncalculated or unreported CSIs from the competing targets.

[0223] Example 6)

[0224] The priority of CSI processing unit occupancy can be determined based on whether a CSI-RS resource indicator (CRI) is reported.

[0225] When CSI is reported together with CRI (i.e., if CRI is included as a CSI reporting quantity), although the corresponding CSI is a single CSI, it can occupy CSI processing units corresponding to the number of CSI-RSs used for measurement. For example, when a terminal performs channel measurements using 8 CSI-RSs and reports CRI to select one of the 8 CSI-RSs, 8 CSI processing units are occupied. In this case, a single CSI may occupy many CSI processing units. To address this issue, in cases where there is already competition for CSI processing unit allocation, the priority of CSIs reported together with CRI can be configured to be lower than the priority of CSIs not reported together with CRI.

[0226] Alternatively, the priority of CSIs reported along with CRIs can be configured to be higher than that of CSIs not reported along with CRIs. This may be more important because CSIs reported along with CRIs have a greater amount of channel information compared to CSIs not reported along with CRIs.

[0227] Furthermore, Examples 1) through 6) can be combined with the aforementioned priority rules regarding CSI conflicts and can be used to determine the priority of CSI processing unit occupancy.

[0228] For example, regarding the occupancy of CSI processing units, Example 1 can be applied with priority over rules #1 to #4. This might mean applying the CSI processing unit occupancy rules by giving priority to CSIs (reports) with low latency, and determining the occupancy priority of CSI processing units based on the aforementioned priority rules related to CSI conflicts when latency is the same. Alternatively, Example 1 can be applied after rule #1, and rules #2 to #4 can be applied sequentially. Alternatively, Example 1 can be applied after rules #1 and #2, and rules #3 and #4 can be applied sequentially.

[0229] In Examples 1) through 6), multiple CSIs (or CSI reports) (hereinafter referred to as "pre-CSIs") that have already occupied a CSI processing unit at a specific time (e.g., the nth OFDM symbol) are described, and the competition and prioritization among CSIs attempting to occupy a CSI processing unit at the start of that specific time (hereinafter referred to as "post-CSIs") have been described. If extended, Examples 1) through 5) can be applied to the prioritization and competition between CSIs that have already occupied a CSI processing unit at a specific time and new CSIs attempting to occupy a CSI processing unit.

[0230] If M or fewer CSIs attempt to occupy a CSI processing unit at a specific time, all CSIs can occupy the CSI processing unit without contention. In this case, if more than M CSIs attempt to occupy a CSI processing unit, the XM CSIs already occupying the unit and the N CSIs attempting to occupy it may compete with each other. In this situation, the competition can be enforced according to either of the following two scenarios.

[0231] The first approach is a technique in which XM CSIs and N CSIs attempting to occupy a CSI processing unit compete equally with each other again. The former CSIs are those that have already occupied a CSI processing unit and have vested rights, but are configured to compete again with the N subsequent CSIs without any advantage.

[0232] The second approach is a technique in which multiple post-CSIs initially compete with each other, and a post-CSI that loses the competition is given the opportunity to compete with a pre-CSI. That is, post-CSIs and pre-CSIs that lose the competition can be configured to compete with each other according to specific rules. As a result, if priority is given to a post-CSI, the CSI processing unit occupied by the pre-CSI can be used for the post-CSI.

[0233] If, after applying specific rules, the CSI has a higher priority than the previous CSI, the previous CSI allocates its CSI processing unit to the subsequent CSI and uses the corresponding CSI processing unit for the subsequent CSI calculation. In this case, the previous CSI's calculation is not yet complete. Therefore, regarding the reporting of the corresponding CSI, a technique can be considered that defines (or stipulates) to re-report the most recently calculated or reported CSI, defines (or stipulates) to report a preset specific CSI value, or defines (or stipulates) not to perform reporting.

[0234] For example, suppose we apply Example 2) to the case of competition between post-CSI and pre-CSI.

[0235] If a subsequent CSI includes a CSI whose occupancy predates the termination of the preceding CSI, then the subsequent CSI may utilize the CSI processing unit occupied by the preceding CSI. Alternatively, if Example 1 is applied, a low-latency subsequent CSI may utilize the CSI processing unit occupied by the high-latency preceding CSI.

[0236] Furthermore, as described above, the CSI calculated via channel measurements based on periodic and / or semi-persistent CSI-RS can be configured to always occupy the CSI processing unit. A technique is considered that allows contention between the pre-CSI and post-CSI and that the CSI processing unit is configured to be redistributed based on priority by limiting it to this case. Additionally, a technique is also considered that configures the pre-CSI calculated via channel measurements based on periodic and / or semi-persistent CSI-RS such that the pre-CSI exclusively occupies the CSI processing unit without competing with the post-CSI. In this case, contention between the remaining CSI and the post-CSI can be allowed.

[0237] Furthermore, as mentioned above, in the case of Type A CSI processing capabilities, if according to The time interval between the first symbol of PUSCH and the last symbol associated with aperiodic CSI-RS / aperiodic CSI-IM is insufficient for CSI computation time, and the terminal may not expect any of the triggered CSI reports to be updated. In this case, regarding the M unoccupied CSI processing units, a technique needs to be considered for selecting the M CSI (reports) to be assigned to the CSI processing units from the N CSI (reports) scheduled in the terminal.

[0238] In this regard, Examples 1) through 6) described in this disclosure and the priority rules related to CSI conflict can be used as techniques for selecting M CSI (reports).

[0239] Furthermore, as a technique for selecting M CSIs (reports), it can be configured to select the M CSIs from the N CSIs that minimize Z_TOT and / or Z'_TOT to the greatest extent. In this case, Z_TOT and / or Z'_TOT can refer to the sum of the Z values ​​and / or the sum of the Z' values ​​reported by the CSIs reported (or updated) by the terminal. If the M CSIs (set) that minimize Z'_TOT to the greatest extent are different from the M CSIs (set) that minimize Z_TOT to the greatest extent, one of them can be ultimately selected. Alternatively, it can be configured to select the M CSIs from the N CSIs that maximize Z_TOT and / or Z'_TOT.

[0240] Furthermore, as a technique for selecting M CSI (reports), it can be configured to select the M CSIs from N CSIs such that the last symbol of the aperiodic CSI-RS and / or aperiodic CSI-IM associated with the CSI report is received at the earliest timing. Alternatively, it can be configured to select the M CSIs from N CSIs such that the last symbol of the aperiodic CSI-RS and / or aperiodic CSI-IM associated with the CSI report is received at the most recent timing.

[0241] For example, suppose N is 3, the last symbol of the aperiodic CSI-RS and / or aperiodic CSI-IM for CSI 1 is located in the fifth symbol of the k-th time slot, the last symbol of the aperiodic CSI-RS and / or aperiodic CSI-IM for CSI 2 is located in the fifth symbol of the (k-1)-th time slot, and the last symbol of the aperiodic CSI-RS and / or aperiodic CSI-IM for CSI 3 is located in the sixth symbol of the k-th time slot. In this case, if M is set to 2, CSI 1 and CSI 2 can be selected so that they occupy the CSI processing unit. The reason for this is that when CSI 3 is selected, the timing of receiving the corresponding CSI-RS and / or CSI-IM is later because the last symbol of the aperiodic CSI-RS and / or aperiodic CSI-IM is located in the sixth symbol of the k-th time slot.

[0242] CSI reports configured and / or indicated by the base station in the terminal based on the above examples may be assigned to and / or occupied by the CSI processing unit supported by the corresponding terminal.

[0243] Figure 7 An example of an operation flowchart illustrating a terminal performing a channel state information report according to some embodiments of the present disclosure is shown. Figure 7 This disclosure is for ease of description only and does not limit the scope of this disclosure.

[0244] refer to Figure 7 Assuming the terminal supports one or more CSI processing units for CSI report execution and / or CSI calculation.

[0245] The terminal can receive Channel State Information Reference Signals (CSI-RS) for CSI reporting (one or more) from the base station (S705). For example, the CSI-RS can be a non-zero power (NZP) CSI-RS and / or a zero power (ZP) CSI-RS. Furthermore, in the case of interference measurement, the CSI-RS can be replaced with CSI-IM.

[0246] The terminal can send the CSI calculated based on CSI-RS to the base station (S710).

[0247] In this scenario, when the number of CSI reports configured in the terminal exceeds the number of unused CSI processing units in the terminal, CSI calculations can be performed based on a predetermined priority. In this case, the predetermined priority can be configured and / or defined as in Examples 1) to 6) described in this disclosure.

[0248] For example, a pre-configured priority can be configured based on the processing time of CSI. The processing time can be: i) a first processing time, that is, the time from the triggering time of the CSI report to the execution time of the CSI report (e.g., Z above), or ii) a second processing time, that is, the time from the receiving time of the CSI-RS to the execution time of the CSI report (e.g., Z' above).

[0249] Furthermore, when the number of unoccupied CSI processing units in the terminal is M, M CSI reports that minimize the sum of the first processing time or the sum of the second processing time among one or more CSI reports configured in the terminal can be assigned to M CSI processing units.

[0250] In addition, one or more CSI reports can be configured in the terminal, and CSI processing units not occupied by the terminal can be allocated for CSIs that meet the first processing time or the second processing time.

[0251] For another example, pre-configured priorities can be configured based on delay requirements for CSI.

[0252] In another example, the pre-configured priority is configured based on the time-domain behavior of CSI-RS, and the time-domain behavior can be one of periodic, semi-persistent, or aperiodic.

[0253] For yet another example, the pre-configured priority can be configured based on whether measurement restrictions on CSI calculations have already been configured (e.g., on or off).

[0254] For yet another example, if the CSI-RS is a non-periodic CSI-RS, the pre-configured priority can be configured based on the timing of the last symbol of the CSI-RS.

[0255] In this regard, in terms of implementation, the operation of the aforementioned terminal can be achieved by the present disclosure. Figures 15 to 18 The terminal devices shown (e.g., 100 and / or 200) are specifically implemented. For example, the operation of the aforementioned terminals may be performed by a processor (e.g., 102 and / or 202) and / or a radio frequency (RF) unit (or module) (e.g., 106 and / or 206).

[0256] In a wireless communication system, a terminal receiving a data channel (e.g., PDSCH) may include a transmitter for transmitting radio signals, a receiver for receiving radio signals, and a processor functionally connected to the transmitter and receiver. In this case, the transmitter and receiver (or transceiver) may be represented as RF units (or modules) for transmitting and receiving radio signals.

[0257] For example, the processor can control the RF unit to receive Channel State Information Reference Signals (CSI-RS) from the base station for CSI reporting (one or more). Furthermore, the processor can control the RF unit to transmit CSI calculated based on the CSI-RS to the base station.

[0258] Figure 8 An example of an operation flowchart illustrating a base station receiving a channel state information report according to some embodiments of the present disclosure is shown. Figure 8 This is for convenience only and does not limit the scope of this disclosure.

[0259] refer to Figure 8 This assumes that the terminal supports one or more CSI processing units for CSI report execution and / or CSI calculation.

[0260] The base station may send a Channel State Information Reference Signal (CSI-RS) for CSI reporting (one or more) to the terminal (S805). For example, the CSI-RS may be a non-zero power (NZP) CSI-RS and / or a zero power (ZP) CSI-RS. Furthermore, in the case of interference measurement, the CSI-RS may be replaced with CSI-IM.

[0261] The base station can receive CSI (S810) calculated based on CSI-RS from the terminal.

[0262] In this scenario, when the number of CSI reports configured in the terminal exceeds the number of CSI processing units not occupied by the terminal, CSI calculations can be performed based on a predetermined priority. In this case, the predetermined priority can be configured and / or defined as in Examples 1) to 6) described in this disclosure.

[0263] For example, a pre-configured priority can be configured based on the CSI processing time. The processing time can be: i) a first processing time, i.e., the time from the CSI report triggering time to the CSI report execution time (e.g., Z above), or ii) a second processing time, i.e., the time from the CSI-RS receiving time to the CSI report execution time (e.g., Z' above).

[0264] Furthermore, when the number of unoccupied CSI processing units in the terminal is M, M CSI reports that minimize the sum of the first processing time or the sum of the second processing time among one or more CSI reports configured in the terminal can be assigned to M CSI processing units.

[0265] In addition, one or more CSI reports can be configured in the terminal, and CSI processing units not occupied by the terminal can be allocated for CSIs that meet the first processing time or the second processing time.

[0266] For another example, pre-configured priorities can be configured based on delay requirements for CSI.

[0267] In another example, pre-configured priorities are configured based on the time-domain behavior of CSI-RS, and the time-domain behavior can be periodic, semi-persistent, or aperiodic.

[0268] For yet another example, the pre-configured priority can be configured based on whether measurement limits for CSI calculations have already been configured (e.g., on or off).

[0269] For yet another example, if the CSI-RS is a non-periodic CSI-RS, the pre-configured priority can be configured based on the timing of the last symbol of the CSI-RS.

[0270] In this regard, regarding implementation, the operation of the aforementioned base station can be achieved by the present disclosure. Figures 15 to 18 The base station equipment shown (e.g., 100 and / or 200) is specifically implemented. For example, the operation of the base station described above can be performed by a processor (e.g., 102 and / or 202) and / or a radio frequency (RF) unit (or module) (e.g., 106 and / or 206).

[0271] In a wireless communication system, a base station transmitting a data channel (e.g., PDSCH) may include a transmitter for transmitting radio signals, a receiver for receiving radio signals, and a processor functionally connected to the transmitter and receiver. In this case, the transmitter and receiver (or transceiver) may be represented as RF units (or modules) for transmitting and receiving radio signals.

[0272] For example, the processor can control the RF unit to send a Channel State Information Reference Signal (CSI-RS) for CSI reporting (one or more) to the terminal. Furthermore, the processor can control the RF unit to receive CSI calculated based on the CSI-RS from the terminal.

[0273] Second Implementation Method

[0274] In this embodiment, an example is described of setting and / or determining the Z value for CSI reports related to beam management and / or beam reporting, other than the aforementioned CSI reports (e.g., Layer 1 Reference Signal Received Power Report (L1-RSRP Report)). In this case, the Z value is related to the non-periodic CSI reports as described above, and may refer to the minimum time (or time interval) from the timing of the terminal receiving the DCI-scheduled CSI report to the timing of the terminal executing the actual CSI report.

[0275] In this embodiment, the L1-RSRP reporting scenario is described in essence, but this is only for ease of description, and the examples described in this embodiment can be applied to CSI reports related to beam management and / or beam reporting (i.e., CSI reports configured for beam management and / or beam reporting purposes). Furthermore, in CSI reports related to beam management and / or beam reporting, reporting information (e.g., reporting quantity, reporting content) may refer to a CSI report configured as at least one of i) CSI-RS Resource Indicator (CRI) and Reference Signal Received Power (RSRP), ii) Synchronization Signal Block (SSB) and RSRP, or iii) No Report (e.g., no report, none).

[0276] In addition to (normal) CSI reporting as described above, in the case of L1-RSRP reporting, the aforementioned Z value and / or Z' value can be used to define the minimum (required) time required by the terminal (i.e., the minimum required time related to the CSI calculation time). If the time scheduled by the base station is less than the corresponding time, the terminal may ignore L1-RSRP triggering DCI, or may not report a valid L1-RSRP value to the base station.

[0277] In the following embodiments, i) the case where there is a Channel State Information Reference Signal (CSI-RS) and / or Synchronization Signal Block (SSB) for L1-RSRP calculation between the aperiodic L1-RSRP triggering DCI and the reporting time (i.e., L1-RSRP reporting timing), and ii) the case where there is a CSI-RS and / or SSB before the aperiodic triggering DCI, and a technique for setting the Z value associated with L1-RSRP is described.

[0278] In this context, "aperiodic L1-RSRP triggering DCI" may refer to the DCI used to trigger aperiodic L1-RSRP reporting, and "CSI-RS for L1-RSRP calculation" may refer to the CSI-RS used for the calculation of the CSI to be used in L1-RSRP reporting.

[0279] Figure 9 This illustrates an example of L1-RSRP reporting operations in a wireless communication system. Figure 9 This is for convenience only and does not limit the scope of this disclosure.

[0280] refer to Figure 9 Assume that there exists a CSI-RS and / or SSB used for L1-RSRP calculation between the timing of receiving the non-periodic L1-RSRP trigger DCI and the L1-RSRP reporting timing. The case of periodic (P) CSI-RS will be described as an example. Figure 9 However, it can be extended and applied to non-periodic and / or semi-permanent CSI-RS and SSB.

[0281] exist Figure 9 In this system, four CSI-RS can be transmitted in four OFDM symbols 905, and these four CSI-RS can be transmitted periodically.

[0282] L1-RSRP reporting is triggered aperiodically by at least one DCI. The terminal can calculate L1-RSRP using the CSI-RS present from the reporting time until Z', and can report the calculated CSI to the base station.

[0283] exist Figure 9 In this case, the terminal can receive a DCI-triggered L1-RSRP report (905) and can use one or more CSI-RS received from the reporting time 915 via the corresponding DCI indication and / or configuration up to the Z' value (i.e., the minimum time necessary for the terminal to receive CSI-RS and perform CSI calculation as described above) to calculate the CSI to be used for the L1-RSRP report.

[0284] Figure 10This illustrates another example of L1-RSRP reporting operations in a wireless communication system. Figure 10 This is for convenience only and does not limit the scope of this disclosure.

[0285] refer to Figure 10 It is assumed that there are no CSI-RS and / or SSBs used for L1-RSRP calculation between the timing of receiving the aperiodic L1-RSRP trigger DCI and the timing of the L1-RSRP report, and that CSI-RS and / or SSBs exist before the aperiodic L1-RSRP trigger DCI. The case of periodic (P) CSI-RS is described as an example. Figure 10 However, it can be extended and applied to non-periodic and / or semi-permanent CSI-RS and SSB.

[0286] exist Figure 10 In this system, four CSI-RS can be transmitted in four OFDM symbols 1005, and these four CSI-RS can be transmitted periodically.

[0287] L1-RSRP reporting is triggered aperiodically by at least one DCI. The terminal can calculate L1-RSRP using the CSI-RS present from the reporting time until Z', and can report the calculated CSI to the base station.

[0288] exist Figure 10 In such cases, the terminal may need to store the measured channel and / or channel information (e.g., L1-RSRP value) based on the probability that a measurement based on the received CSI-RS will be reported, because the terminal cannot know whether the received CSI-RS has been reported until it receives the DCI that triggers the CSI report. In this case, the terminal may need to store the above information until the timing of DCI decoding is completed, i.e., the time when the CSI report becomes clear. In this case, there is a disadvantage of increased terminal cost due to the need for additional memory.

[0289] Therefore, one could consider, for example, in Figure 9 The restricted scheduling in the protocol allows for a technique to be used for L1-RSRP calculations between the non-periodic L1-RSRP triggering DCI and L1-RSRP reporting timings. In this case, the Z value (i.e., the minimum required time for the terminal's (non-periodic) CSI reporting) can be determined to be greater than the Z' value, and can be determined to be equal to or greater than the sum of the Z' value and the number of symbols in which CSI-RS and / or SSBs are transmitted.

[0290] Because CSI-RS is transmitted over 14 symbols or fewer, the Z value will not increase significantly. However, because SSB is transmitted over several time slots (e.g., 5 ms), the Z value can be set considerably. If the Z value increases, efficiency may be lower because the delay between the timing of triggering the CSI report and the actual execution of the CSI report will increase.

[0291] With this in mind, the following example can be considered when determining the Z value.

[0292] Example 1)

[0293] In the case of CSI reporting based on CSI-RS, it is assumed that there exists a CSI-RS and / or SSB for L1-RSRP calculation between the non-periodic L1-RSRP triggering DCI and the reporting timing (e.g., Figure 9 In the case of Z', the Z value can be configured to be defined as a value greater than the Z' value. Furthermore, in the case of SSB-based CSI reporting, it is assumed that a CSI-RS and / or SSB exists for L1-RSRP calculation prior to the non-periodic L1-RSRP triggering DCI (e.g., Figure 10 In cases where the Z value is less than the Z value used for CSI reports based on CSI-RS, the Z value can be configured to be less than the value used for CSI reports based on CSI-RS.

[0294] Example 2)

[0295] Alternatively, the choice between using a smaller or larger Z value can be determined based on the temporal characteristics (i.e., temporal behavior) of the resources used for L1-RSRP calculations (e.g., aperiodicity, periodicity, semi-persistence).

[0296] For example, one could consider configuring and / or defining techniques for CSI-RS and / or SSB with periodic or semi-permanent characteristics using smaller Z values, and techniques for CSI-RS with aperiodic characteristics (i.e., aperiodic CSI-RS) using larger Z values ​​alone.

[0297] Example 3)

[0298] Consider the following scenario where CSI-related reporting settings (e.g., CSI reporting settings) are configured for beam management and / or beam reporting use (i.e., if the reporting information is configured as i) CRI and RSRP, ii) SSB ID and RSRP, or iii) any one of no reporting), and non-periodic CSI-RS is used for the reporting settings.

[0299] In this scenario, the base station should separate and transmit the triggering DCI and aperiodic CSI-RS within a time frame exceeding the minimum time previously reported by the UE as a capability (e.g., m, KB). The minimum time is the time between the triggering DCI and the AP CSI-RS. In this case, the triggering DCI refers to the DCI used to trigger (or schedule) the aperiodic CSI-RS. That is, the value of m can be determined by considering the DCI decoding time. Thus, the base station may need to schedule the CSI-RS by considering the DCI decoding time related to the reception of the CSI-RS to be reported by the terminal.

[0300] Similarly, when using the aforementioned CSI-RS (e.g., periodic, semi-persistent, or aperiodic CSI-RS) and / or SSB reporting of aperiodic L1-RSRP, the terminal may require a minimum amount of time for CSI reporting (referred to as the Z value). In such scenarios, the Z value can be determined using an m value. For example, "Z = m" can be configured to ensure that reporting is performed after DCI decoding is complete.

[0301] In this scenario, during the time interval between the timing of receiving the DCI from the terminal and the timing of the terminal executing the CSI report, in addition to the DCI decoding time for the terminal, the terminal may also require L1-RSRP encoding time and Tx preparation time.

[0302] Therefore, it may be necessary to set the Z value to be greater than the m value. For example, the Z value can simply be set to m + c (e.g., where c is a constant, such as c = 1).

[0303] Alternatively, the Z value can be determined as the sum of the m value and the Z' value. For example, the Z value can be set by adding the time required to decode the DCI of the non-periodic CSI-RS to the Z' value. As a specific example, the Z value can be set based on the minimum required time from the last timing of the CSI-RS received from the terminal to the CSI report timing, and the decoding time of the DCI of the corresponding CSI-RS.

[0304] Regarding the examples described in this embodiment, techniques for configuring the number of CSI processing units (e.g., CPUs) used for L-RSRP reporting can also be considered.

[0305] In normal CSI reporting, the number of CSI processing units to be utilized or occupied can vary depending on the number of CSI-RS resources configured and / or allocated to CSI reporting (i.e., the number of CSI-RS indexes). For example, as the number of CSI-RSs increases, the computational complexity of CSI may increase, leading to an increase in the number of processing units used for CSI reporting. In contrast, in some scenarios, the number of CSI processing units used for (or configured, occupied) L1-RSRP reporting can be fixed at 1. For example, L1-RSRP can be calculated by measuring the power received per received power relative to N CSI-RS resources or N SSBs, but L1-RSRP can be calculated as 1 CSI processing unit because the computational load is smaller compared to the computational complexity of regular CSI.

[0306] Therefore, in normal CSI calculations, the number of CSI processing units is increased and used linearly, as many as the number of CSI-RS resources used for channel measurements. In the case of L1-RSRP calculations, only one CSI processing unit can be configured.

[0307] Alternatively, in the case of L1-RSRP calculation, a technique can be used to non-linearly increase the number of CSI processing units based on the number of CSI-RS and / or SSB resources without fixing the number of CSI processing units used. For example, a technique can be considered in which the number of CSI processing units is set to 1 if the terminal performs L1-RSRP calculation with 16 or fewer CSI-RS resources, and the number of CSI processing units is set to 2 if the terminal performs L1-RSRP calculation under other circumstances.

[0308] Figure 11 An example of an operation flowchart illustrating a terminal reporting channel state information according to some embodiments of the present disclosure is shown. Figure 11 This disclosure is for ease of description only and does not limit the scope of this disclosure.

[0309] refer to Figure 11 This assumes that the terminal uses the example described in the second embodiment when performing L1-RSRP reporting. In particular, the Z value and / or Z' value reported as UE capability information can be determined and / or configured based on the example described in the second embodiment (e.g., example 3 of the second embodiment).

[0310] The terminal can receive a DCI (S1105) that triggers a CSI report (from the base station). In this case, the CSI report can be an aperiodic CSI report.

[0311] In addition, the CSI report can be a CSI report used for beam management and / or beam reporting. For example, the reporting information in the CSI report can be i) CSI-RS Resource Indicator (CRI) and Reference Signal Received Power (RSRP), ii) Synchronization Signal Block (SSB) identifier and RSRP, or iii) any one of the following in no report.

[0312] The terminal can receive at least one CSI-RS (S1110) (from the base station) for CSI reporting (i.e., configured and / or indicated for CSI reporting). For example, as Figure 9 As shown, the CSI-RS can be a CSI-RS received after the DCI in step S1105 and before the CSI report timing.

[0313] The terminal can send the CSI calculated based on CSI-RS to the base station (S1115). For example, the terminal can perform an L1-RSRP report based on CSI-RS measurements on the base station.

[0314] In this case, the minimum required time for CSI reporting (e.g., the Z value in Example 3 of the second embodiment) can be configured based on i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI (e.g., the Z' value in Example 3 of the second embodiment), and ii) the decoding time for the DCI used to schedule the CSI-RS (e.g., the m value in Example 3 of the second embodiment). For example, the minimum required time for CSI reporting can be configured as the sum of i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI and ii) the minimum required time between triggering the DCI of the CSI-RS and the reception (or transmission) of the CSI-RS (i.e., the decoding time for the DCI used to schedule the CSI-RS) (e.g., Z = Z' + m).

[0315] In addition, as mentioned above, the terminal can report the minimum required time from the last timing of CSI-RS to the transmission timing of CSI as UE capability information to the base station.

[0316] Furthermore, as described above, the CSI-RS is configured to be transmitted non-periodically, i.e., non-periodic CSI-RS, and the DCI that schedules the CSI-RS can be a triggering DCI for the CSI-RS. In this case, the terminal can report information about the minimum required time between the triggering DCI for the CSI-RS and the reception of the CSI-RS (i.e., the decoding time of the DCI used to schedule the CSI-RS) to the base station as UE capability information.

[0317] Furthermore, as described above, the number of CSI processing units occupied for CSI reporting (e.g., CSI reports configured for beam management and / or beam reporting use, i.e., L1-RSRP reports) can be set to 1.

[0318] In this regard, in terms of implementation, the operation of the aforementioned terminal can be achieved by the present disclosure. Figures 15 to 18 The terminal devices shown (e.g., 100 and / or 200) are specifically implemented. For example, the operation of the aforementioned terminals may be performed by a processor (e.g., 102 and / or 202) and / or a radio frequency (RF) unit (or module) (e.g., 106 and / or 206).

[0319] In a wireless communication system, a terminal receiving a data channel (e.g., PDSCH) may include a transmitter for transmitting radio signals, a receiver for receiving radio signals, and a processor functionally connected to the transmitter and receiver. In this case, the transmitter and receiver (or transceiver) may be represented as RF units (or modules) for transmitting and receiving radio signals.

[0320] For example, the processor can control the RF unit to receive (from the base station) a DCI that triggers a CSI report. In this case, the CSI report can be an aperiodic CSI report.

[0321] In addition, the CSI report can be a CSI report used for beam management and / or beam reporting. For example, the reporting information in the CSI report can be i) CSI-RS Resource Indicator (CRI) and Reference Signal Received Power (RSRP), ii) Synchronization Signal Block (SSB) identifier and RSRP, or iii) any one of the following in no report.

[0322] The processor can control the RF unit to receive (from the base station) at least one CSI-RS for CSI reporting (i.e., configured and / or indicated for CSI reporting). For example, such as Figure 9 As shown, the CSI-RS can be received after the timing of the DCI that triggers the CSI report and before the timing of the CSI report.

[0323] The processor can control the RF unit to send CSI calculated based on CSI-RS to the base station. For example, the processor can control the L1-RSRP report based on CSI-RS measurements, causing the L1-RSRP report to be executed at the base station.

[0324] In this case, the minimum required time for CSI reporting (e.g., the Z value in Example 3 of the second embodiment) can be configured based on i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI (e.g., the Z' value in Example 3 of the second embodiment), and ii) the decoding time for the DCI used to schedule the CSI-RS (e.g., the m value in Example 3 of the second embodiment). For example, the minimum required time for CSI reporting can be configured as the sum of i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI and ii) the minimum required time between triggering the DCI of the CSI-RS and the reception of the CSI-RS (i.e., the decoding time for the DCI used to schedule the CSI-RS) (e.g., Z = Z' + m).

[0325] Furthermore, as mentioned above, the terminal can report the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI as UE capability information to the base station.

[0326] Furthermore, as described above, CSI-RS is configured to be transmitted non-periodically, i.e., non-periodic CSI-RS, and the DCI for scheduling CSI-RS can be a trigger DCI for CSI-RS. In this case, the terminal can report information about the minimum required time between the trigger DCI for CSI-RS and the reception of CSI-RS (i.e., the decoding time of the DCI for scheduling CSI-RS) as UE capability information to the base station.

[0327] Furthermore, as described above, the number of CSI processing units occupied for CSI reporting (e.g., CSI reports configured for beam management and / or beam reporting use, i.e., L1-RSRP reports) can be set to 1.

[0328] Because the operation is performed as described above, unlike a normal CSI report, in the case of an L1-RSRP report used for beam management and / or beam reporting, a valid Z-value setting and CSI processing unit occupancy can be performed.

[0329] Figure 12 An example of an operation flowchart illustrating a base station receiving channel state information according to some embodiments of the present disclosure is shown. Figure 12 This is for convenience only and does not limit the scope of this disclosure.

[0330] refer to Figure 12 Assuming the terminal uses the example described in the second embodiment when performing L1-RSRP reporting. Specifically, the Z value and / or Z' value reported as UE capability information can be determined and / or configured based on the example described in the second embodiment (e.g., example 3 of the second embodiment).

[0331] The base station can send a DCI (S1205) that triggers a CSI report (to the terminal). In this case, the CSI report can be an aperiodic CSI report.

[0332] In addition, the CSI report can be a CSI report used for beam management and / or beam reporting. For example, the reporting information in the CSI report can be i) CSI-RS Resource Indicator (CRI) and Reference Signal Received Power (RSRP), ii) Synchronization Signal Block (SSB) identifier and RSRP, or iii) any one of the following in no report.

[0333] The base station can send at least one CSI-RS (S1210) (to the terminal) for CSI reporting (i.e., configured and / or indicated for CSI reporting). For example, as Figure 9 As shown, the CSI-RS can be a CSI-RS sent after the DCI in step S1205 and before the CSI report timing.

[0334] The base station can receive CSI calculated based on CSI-RS from the terminal (S1215). For example, the terminal can perform an L1-RSRP report based on CSI-RS measurements on the base station.

[0335] In this case, the minimum required time for CSI reporting (e.g., the Z value in Example 3 of the second embodiment) can be configured based on i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI (e.g., the Z' value in Example 3 of the second embodiment) and ii) the decoding time for the DCI used to schedule the CSI-RS (e.g., the m value in Example 3 of the second embodiment). For example, the minimum required time for CSI reporting can be configured as the sum of i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI and ii) the minimum required time between triggering the DCI of the CSI-RS and receiving the CSI-RS (i.e., the decoding time for the DCI used to schedule the CSI-RS) (e.g., Z = Z' + m).

[0336] In addition, as mentioned above, the terminal can report the minimum required time from the last timing of CSI-RS to the transmission timing of CSI as UE capability information to the base station.

[0337] Furthermore, as described above, CSI-RS is configured to be transmitted non-periodically, i.e., non-periodic CSI-RS, and the DCI that schedules CSI-RS can be a trigger DCI for CSI-RS. In this case, the terminal can report the decoding time information of the DCI used to schedule CSI-RS to the base station as UE capability information.

[0338] Furthermore, as described above, the number of CSI processing units occupied for CSI reporting (e.g., CSI reports configured for beam management and / or beam reporting use, i.e., L1-RSRP reports) can be set to 1.

[0339] Because the operation is performed as described above, unlike a normal CSI report, in the case of an L1-RSRP report used for beam management and / or beam reporting, a valid Z-value setting and CSI processing unit occupancy can be performed.

[0340] In this regard, in terms of implementation, the operation of the aforementioned base station can be achieved by the present disclosure. Figures 15 to 18 The base station equipment shown (e.g., 100 and / or 200) is specifically implemented. For example, the operation of the base station described above can be performed by a processor (e.g., 102 and / or 202) and / or a radio frequency (RF) unit (or module) (e.g., 106 and / or 206).

[0341] In a wireless communication system, a base station transmitting a data channel (e.g., PDSCH) may include a transmitter for transmitting radio signals, a receiver for receiving radio signals, and a processor functionally connected to the transmitter and receiver. In this case, the transmitter and receiver (or transceiver) may be represented as RF units (or modules) for transmitting and receiving radio signals.

[0342] For example, the processor can control the RF unit to send a DCI that triggers a CSI report (to the terminal). In this case, the CSI report can be a non-periodic CSI report.

[0343] In addition, the CSI report can be a CSI report used for beam management and / or beam reporting. For example, the reporting information in the CSI report can be i) CSI-RS Resource Indicator (CRI) and Reference Signal Received Power (RSRP), ii) Synchronization Signal Block (SSB) identifier and RSRP, or iii) any one of the following in no report.

[0344] The processor can control the RF unit to send at least one CSI-RS (configured and / or indicated for CSI reporting) to the terminal. For example, such as Figure 9 As shown, the CSI-RS can be sent after the DCI timing that triggers the CSI report and before the CSI report timing.

[0345] The processor can control the RF unit to receive CSI calculated based on CSI-RS from the terminal. For example, the terminal can perform an L1-RSRP report based on CSI-RS measurements at the base station.

[0346] In this case, the minimum required time for CSI reporting (e.g., the Z value in Example 3 of the second embodiment) can be configured based on i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI (e.g., the Z' value in Example 3 of the second embodiment), and ii) the decoding time for the DCI used to schedule the CSI-RS (e.g., the m value in Example 3 of the second embodiment). For example, the minimum required time for CSI reporting can be configured as the sum of i) the minimum required time from the last timing of the CSI-RS to the transmission timing of the CSI and ii) the minimum required time between triggering the DCI of the CSI-RS and the reception of the CSI-RS (i.e., the decoding time for the DCI used to schedule the CSI-RS) (e.g., Z = Z' + m).

[0347] In addition, as mentioned above, the terminal can report the minimum required time from the last timing of CSI-RS to the transmission timing of CSI as UE capability information to the base station.

[0348] Furthermore, as described above, CSI-RS is configured to be transmitted non-periodically, i.e., non-periodic CSI-RS, and the DCI that schedules CSI-RS can be a trigger DCI for CSI-RS. In this case, the terminal can report the decoding time information of the DCI used to schedule CSI-RS to the base station as UE capability information.

[0349] Furthermore, as described above, the number of CSI processing units occupied for CSI reporting (e.g., CSI reports configured for beam management and / or beam reporting use, i.e., L1-RSRP reports) can be set to 1.

[0350] Because the operation is performed as described above, unlike a normal CSI report, in the case of an L1-RSRP report used for beam management and / or beam reporting, a valid Z-value setting and CSI processing unit occupancy can be performed.

[0351] Third Implementation Method

[0352] In addition, methods for separately configuring CSI reference resources for calculating the L-RSRP used in the aforementioned beam reporting and for configuring general CSI reference resources for CSI calculations can be considered. Tables 7 and 8 show examples of configurations related to CSI reference resources for CSI calculations.

[0353] [Table 7]

[0354]

[0355] [Table 8]

[0356]

[0357] A method for defining CSI reference resources for L1-RSRP reporting is proposed, referring to the CSI reference resource configurations in Tables 7 and 8. For ease of description, in this disclosure, the CSI reference resources used for L1-RSRP reporting are referred to as L1-RSRP reference resources.

[0358] For time-domain, periodic and / or semi-persistent L1-RSRP reports on L1-RSRP reference resources, one of Method 1 and Method 2 can be followed instead of (A) and (B) in Table 7.

[0359] Method 1)

[0360] When one or more CSI-RS resources (or SSB resources) are configured for L1-RSRP reporting for a UE, the (all) n_CQI_ref can be defined as greater than or equal to 4. The minimum value among 2^(min(µ_DL,µ_UL)) is such that it corresponds to an effective downlink slot.

[0361] Method 2)

[0362] When one or more CSI-RS resources (or SSB resources) are configured for L1-RSRP reporting for a UE, (all) n_CQI_ref can be defined as greater than or equal to F. The minimum value among 2^(min(µ_DL, µ_UL)) corresponds to the effective downlink slot. Here, F is a constant less than 4 (e.g., F = 1, 2, or 3).

[0363] Because the computational complexity of L1-RSRP reports is lower than that of CSI reports, the 4-bit system can be fixed and used regardless of the amount of resources used for channel measurements. The method of 2^(min(µ_DL,µ_UL)) (method 1 above) may be effective.

[0364] And / or, the computational complexity of L1-RSRP reporting is lower than that of CSI reporting, and therefore it can be fixed and used with less than 4 resources regardless of the amount of resources available for channel measurements. 2^(min(µ_DL,µ_UL))F The method of 2^(min(µ_DL,µ_UL)) (method 2 above) may be effective.

[0365] The details corresponding to (C) in Table 8 may not be used as conditions for validating the validity of the L1-RSRP report. Alternatively, the details corresponding to (C) in Table 8 may not be used as conditions for validating the validity of the L1-RSRP report only in the following examples. For example, an L1-RSRP reference resource may also be configured in the measurement interval when an L1-RSRP report is not set for each of the multiple carrier components (CCs) or multiple bandwidth portions (BWPs) (e.g., BWP 1, 2, 3, and 4) and an L1-RSRP report is set only for one of the multiple CCs and / or multiple BWPs (e.g., BWP 1). For example, the above situation may be a case where it is assumed that BWP 2, 3, and 4 have a QCLD relationship with the CSI-RS and / or SSB used for the L1-RSRP calculation of BWP 1.

[0366] In the case of L-RSRP, interference measurement is not required, and therefore the details in Section D of Table 8 concerning interference measurement resources may be invalid for L1-RSRP. Therefore, in the case of L1-RSRP, Section D of Table 8 can be changed to "There exists at least one CSI-RS and / or SSB transmission opportunity for L1-RSRP measurements prior to the CSI reference resource for which CSI reporting is performed." Similarly, in the definition of L1-RSRP reference resources, (all) details (e.g., Tables 7 and / or 8) concerning interference measurements used in the definition of CSI reference resources for CSI calculations may be invalid.

[0367] Furthermore, when configuring L1-RSRP reference resources based on Tables 7 and 8, the L1-RSRP reference resources can be configured as downlink time slots n-n_CQI_ref according to the definitions in the time domain. Here, although the validity of n_CQI_ref can be used during the calculation of n_CQI_ref, it is unnecessary because, unlike CSI reports, L1-RSRP reports can perform only power measurements. That is, n_CQI_ref for L1-RSRP reference resources can be calculated under the assumption that all time slots are valid.

[0368] Referring to Tables 7 and 8, in the case of CSI reporting, the UE can configure CSI reference resources according to predefined (or preset) rules and calculate CSI based on the configured CSI reference resources. Furthermore, as mentioned above, for L1-RSRP reporting, settings for reference resources (i.e., L1-RSRP reference resources) can be considered.

[0369] On the other hand, the L1-RSRP report is calculated using a simpler power measurement step than the power measurement step used for the CSI report, and is independent of PDSCH transmission. Therefore, the UE can calculate the measurement information for the L1-RSRP report without setting up L1-RSRP reference resources.

[0370] When a UE calculates L1-RSRP using periodic and / or semi-persistent CSI-RS and / or SSB, the aforementioned application uncertainty of the value Z' may arise. Value Z' can refer to the minimum time required from the timing and / or symbol of the reference resource (i.e., CSI-RS and / or SSB) used for power measurement to the timing and / or symbol of reporting L1-RSRP. In the case of periodic and / or semi-persistent CSI-RS and / or SSB, the CSI-RS and / or SSB exist periodically multiple times, and therefore the base station cannot be aware of the CSI-RS and / or SSB used by the UE to perform power measurement. Therefore, the UE and the base station may interpret differently whether the L1-RSRP report satisfies value Z' (i.e., whether the minimum value required from the CSI-RS and / or SSB used for power measurement to the reporting time is equal to or greater than value Z'). To resolve this ambiguity, the following method is proposed.

[0371] When the UE calculates L1-RSRP using periodic and / or semi-persistent CSI-RS and / or SSB, the UE and base station can be configured to no longer use the aforementioned Z' condition. That is, the Z condition is used, but the Z' condition is ignored, and L1-RSRP is calculated and reported. Alternatively, the UE can calculate and report L1-RSRP under the assumption that the Z' condition is always satisfied. Furthermore, when calculating L1-RSRP using non-periodic CSI-RS and / or SSB, the UE can calculate and report L1-RSRP differently by using the Z condition and Z' condition, depending on whether the aforementioned Z condition and Z' condition are satisfied.

[0372] For example, when performing channel measurements using periodic and / or semi-persistent CSI-RS during CSI reporting, the CSI processing unit (CPU) can be configured as follows. The CPU can occupy multiple OFDM symbols according to the following rules.

[0373] - Periodic or semi-persistent CSI reports using periodic or semi-persistent CSI-RS can occupy CPU from the first symbol of the earliest CSI-RS and / or CSI / IM resource used for channel or interference measurements (the latest CSI-RS and / or CSI-IM timing before the corresponding CSI reference resource), if possible, to the last symbol of the PUSCH and / or PUCCH carrying the corresponding report.

[0374] When not considering settings for L1-RSRP reference resources, the start and end times for CPU usage can be set as described above.

[0375] In the case of L1-RSRP reporting using periodic or semi-persistent CSI-RS and / or SSB, when assuming the UE reports L1-RSRP information in slot n, the CPU occupancy start time can be the first symbol of the earliest CSI-RS and / or SSB among the latest periodic or semi-persistent CSI-RS and / or SSB received before slot nC.

[0376] When using L1-RSRP reports with periodic or semi-persistent CSI-RS and / or SSB, the CPU occupancy end time can be the last symbol of the PUSCH and / or PUCCH carrying the L1-RSRP report.

[0377] In the above method, the value C refers to a specific constant value and can be determined as a function of the symbol Z'. For example, the value C can be determined as the flooring (e.g., flooring down) of Z' / (the number of OFDM symbols in the time slot) (i.e., flooring(Z' / N^slot_symbol)). For example, the value C can be set to flooring(Z' / N^slot_symbol) + 1. In this case, the minimum time used for L1-RSRP calculation can be increased, which can help with UE implementation. For example, the value C can be determined as the ceiling (e.g., flooring up) of Z' / (the number of OFDM symbols in the time slot) (i.e., ceiling(Z' / N^slot_symbol)). In this case, the minimum time used for L1-RSRP calculation can be increased, which can help with UE implementation. For example, the value C can be set to ceiling(Z' / N^slot_symbol) + 1. In this case, the minimum time used for L1-RSRP calculation can be increased. For example, the value C can be set to a specific value. The value C can be determined to be 4, taking into account the fact that n_CQI_ref is equal to or greater than 4 in conventional systems (e.g., LTE systems). Alternatively, since the L1-RSRP report has low computational complexity while taking into account the fact that n_CQI_ref is equal to or greater than 4 in conventional systems, the value C can be determined to be a value less than 4 (e.g., 2).

[0378] Fourth Implementation Method

[0379] In the method for determining the value Z (i.e., the minimum required time for L1-RSRP reporting) described in the second embodiment, the value Z' may represent the time from the last timing and / or symbol of receiving the measurement resource to the first timing and / or symbol of reporting the CSI. For example, as in the second embodiment, when Z = m + Z', the value Z' may correspond to the time from the last timing and / or symbol of receiving the channel measurement resource (CMR) and / or interference measurement resource (IMR) to the first timing and / or symbol of reporting the CSI. That is, the UE may perform channel measurement and / or interference measurement, calculate the CSI, and then encode the calculated CSI to determine / generate the UL transmission signal within the time corresponding to the value Z'.

[0380] Furthermore, the value Z can represent the time from the last timing and / or symbol of receiving the PDCCH (i.e., DCI) that triggers CSI to the first timing and / or symbol of reporting CSI, as described above. That is, the UE can perform channel measurements and / or interference measurements, calculate CSI, and then encode the calculated CSI to determine / generate the UL transmission signal within the time corresponding to the value Z.

[0381] Furthermore, as mentioned above, the value m can represent the time required for the UE to decode the DCI and switch the Rx beam receiving the DCI to the Rx beam through which it receives the CSI-RS indicated by the DCI. Here, because the Rx beam switching time is short (e.g., one symbol or less), the value m represents the time required to decode the DCI. Therefore, it may be preferable to set the value Z by adding the value m corresponding to the decoding time and α (e.g., the value corresponding to one symbol or less) to the value Z'. Here, the values ​​Z, Z', and m can be defined in units of OFDM symbols.

[0382] However, the value m can only be defined for subcarrier spacing of 60 kHz and / or 120 kHz, and therefore it may be difficult to apply the above method (i.e., Z = Z' + m) to determine the value Z in the case of 15 kHz and / or 30 kHz subcarrier spacing.

[0383] It is possible to consider assuming that the value of m in the case of 15kHz and / or 30kHz subcarrier spacing is the same as the value of m in the case of 60kHz subcarrier spacing, and adopt the method described above (i.e., Z = Z' + m). For example, in the case of 15kHz and / or 30kHz subcarrier spacing, the absolute time required to transmit one symbol is four times and twice as long as in the case of 60kHz subcarrier spacing. Therefore, when the DCI decoding time is m symbols in the case of 60kHz subcarrier spacing, the DCI decoding time required is less than m symbols in the case of 15kHz and / or 30kHz subcarrier spacing. Therefore, when assuming that the value of m in the case of 15kHz and / or 30kHz subcarrier spacing is the same as the value of m in the case of 60kHz subcarrier spacing, Z is defined as greater than the actual minimum required CSI processing time when applying the method described above (i.e., Z = Z' + m), and thus the UE can be easily implemented.

[0384] Furthermore, considering the increase in transmission time due to the reduction in subcarrier spacing, it is also conceivable to obtain the value Z by scaling the value m in the case of 15kHz and / or 30kHz subcarrier spacing to the value m in the case of 60kHz subcarrier spacing by dividing by 4 or 2, and then applying the above method to it (i.e., Z = Z' + m).

[0385] If the completion of CSI processing performed by the UE within the time Z (i.e., Z = Z' + m) defined according to the above method places a burden on the UE implementation, a method of providing a specific margin value can be considered. For example, when it is difficult for the UE to complete CSI processing within time Z (e.g., all the processing required to report CSI, such as decoding for triggering DCI, channel and / or interference measurement, CSI calculation, and CSI encoding), the value Z can be defined as the sum of Z', m, and C. Here, the value C is a constant and can be defined in sign.

[0386] In addition, for L1-RSRP reports, UE capability information can be set as shown in Table 9. Table 9 shows examples of UE capability information related to L1-RSRP reports.

[0387] [Table 9]

[0388]

[0389] For example, as shown in Table 9, regarding the L1-RSRP report, UE capability 2-25 and UE capability 2-28 can be set as UE capability information. Here, UE capability 2-25 can be UE capability information regarding the timing of aperiodic beam reporting related to the aforementioned value Z'. Additionally, UE capability 2-28 can be UE capability information regarding the aforementioned value m related to the minimum time between the DCI triggering aperiodic CSI-RS and the reception (or transmission) of aperiodic CSI-RS.

[0390] In the following text, for ease of description, UE capability information relating to the timing of aperiodic beam reporting (e.g., UE capability 2-25) is referred to as first UE capability information, and UE capability information relating to the minimum time between the DCI that triggers aperiodic CSI-RS and the reception (or transmission) of aperiodic CSI-RS (e.g., UE capability 2-28) is referred to as second UE capability information.

[0391] When the UE does not support (analog) Rx beam switching in some or all subcarrier spacings (e.g., 60 kHz, 120 kHz, etc.) in a high-frequency band (e.g., frequency range 2 (FR2)), the UE may not report (or send) the second UE capability information to the base station. Here, when the UE does not report the second UE capability information to the base station, the above-described Z setting method (e.g., Z = Z' + m) may be invalid because the second UE capability information corresponds to the value m mentioned above. Furthermore, in the case of a low-frequency band (e.g., frequency range 1 (FR1)), the UE does not report the second UE capability information to the base station, and therefore the above-described Z setting method (e.g., Z = Z' + m) may also be invalid.

[0392] In view of this, the following method can be considered to facilitate the calculation of the minimum required time (e.g., value Z) for L1-RSRP reporting.

[0393] Method 1)

[0394] When a UE reports (transmits) second UE capability information to a base station (i.e., the minimum time between the DCI triggering aperiodic CSI-RS and the aperiodic CSI-RS reception (or transmission), a method can be conceived that sets Z such that the aforementioned Z setting method (e.g., Z = Z' + m) is used for the corresponding subcarrier spacing. This method can be extended and applied to methods that set the value Z to the sum of the values ​​Z', m, and C.

[0395] For example, for subcarrier spacing where the UE does not report second UE capability information (including the FR1 case), the UE can apply the Z setting method described above (e.g., Z = Z' + m) assuming a specific value among the specific candidate values ​​is m. For example, the specific candidate values ​​could be set to {14, 28, 48, 224, 336}. Values ​​corresponding to 224 and 336 among the specific values ​​may not be suitable because they include Rx beam (and / or panel) activation time in addition to the time required for DCI decoding. Therefore, determining the value m as one of {14, 28, 48}, and configuring the UE to perform L1-RSRP reporting faster by assuming m as the minimum value of 4, can adequately ensure the minimum time required for L1-RSRP calculation by the UE and improve the ease of UE implementation.

[0396] Furthermore, in method 1) above, the base station can set or instruct the UE whether to use the value reported by the UE as value m to set value Z (i.e., Z = Z' + m), or to set value Z while assuming value m is a specific value (while ignoring the value reported by the UE) (i.e., Z = Z' + m). In this case, the aforementioned setting and / or instruction can be performed via higher-layer signaling, and the UE can perform L1-RSRP reporting according to the set and / or instructed method. Additionally, the base station can determine value m and set and / or instruct value m to the UE.

[0397] Method 2)

[0398] In method 1) above, when the UE reports (or sends) the second UE capability information to the base station (i.e., the minimum time between the DCI that triggers the aperiodic CSI-RS and the reception (or transmission) of the aperiodic CSI-RS), the above Z setting method (e.g., Z = Z' + m) is used for the corresponding subcarrier interval, and the value Z is determined if this is not the case.

[0399] In method 2), a method is proposed to determine Z differently in response to the reported value m, even when the UE reports second UE capability information to the base station. That is, the method for determining the value Z can depend on the value of "the minimum time between the DCI that triggers aperiodic CSI-RS and the reception (or transmission) of aperiodic CSI-RS" reported by the UE to the base station. For example, a specific threshold (e.g., an upper limit) can be set for the calculation of the value Z, and the value Z can be determined based on the specific threshold when the calculated value Z is too large.

[0400] For example, when m is in {14, 28, 48}, the value Z is determined as the sum of Z' and m, while when m is in {224, 336}, the value Z is determined as the sum of Z' and a specific value. Here, the specific value can be a specific constant or a value according to a predetermined mathematical expression (e.g., a specific constant - Z'). This is because the value corresponding to 224 or 336 includes the Rx beam (and / or panel) activation time and the time required for DCI decoding, and therefore when this value is applied to the value Z, the L1-RSRP report may be (excessively) delayed from the DCI reception time as the value Z (excessively) increases. Therefore, in this case, a method can be conceived to calculate the value Z (Z = Z' + m) by setting, defining, and / or determining an upper limit value associated with the calculation of the value Z and replacing the value m reported by the UE with that upper limit value.

[0401] For example, the specific values ​​and / or thresholds (e.g., upper limits) mentioned above can be determined as one of {14, 28, 48}. The UE can be configured to perform L1-RSRP reporting faster by assuming the value m is the minimum of 14. Alternatively, by assuming the value m is the maximum of 48, the minimum time required for the UE to perform L1-RSRP calculation can be sufficiently ensured, and the ease of implementation for the UE can be improved.

[0402] Figure 13 Examples of signaling between a UE and a base station (BS) in a wireless communication system for transmitting and receiving power measurement information about beam reports, according to some embodiments of this disclosure, are shown. Figure 13 This is for ease of description and does not limit the scope of this disclosure. Furthermore, Figure 13 Some of the steps shown can be omitted.

[0403] refer to Figure 13 Assume that when the UE reports (sends) power measurement information regarding beam reporting (e.g., the aforementioned L1-RSRP) to the BS, it uses the methods and / or examples proposed in the second and fourth embodiments. For example, the power measurement information regarding beam reporting may include one of the following: i) CSI-RS Resource Indicator (CRI) and Reference Signal Received Power (RSRP), ii) Synchronization Signal Block (SSB) identifier and RSRP, and iii) No report. Furthermore, the subcarrier spacing used for power management information can be set to a high-frequency band (e.g., 60 kHz, 120 kHz, etc.).

[0404] The UE can send UE capability information (S1305) to the BS regarding a report of power measurement information related to beam reporting to the BS. In other words, the BS can receive UE capability information from the UE regarding a report of power measurement information related to beam reporting. For example, the UE capability information related to L1-RSRP reporting may include: UE capability information regarding the timing of aperiodic beam reporting related to the aforementioned value Z' (e.g., first UE capability information) and UE capability information regarding the minimum value between the DCI triggering aperiodic CSI-RS and aperiodic CSI-RS reception (or transmission) related to the aforementioned value m (e.g., second UE capability information), as in the second and fourth embodiments described above.

[0405] For example, the UE in step S1305 (e.g., Figures 15 to 18 100 and / or 200 in the middle) to BS (e.g., Figures 15 to 18 The operation of sending UE capability information (in 100 and / or 200) can be described below. Figures 15 to 18 The device implementation. For example, refer to Figure 15 At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104 to transmit UE capability information, and at least one transceiver 106 can send the UE capability information to the BS.

[0406] Similarly, in step S1305, BS (e.g., Figures 15 to 18 100 and / or 200 in the UE (e.g., Figures 15 to 18 The operation of receiving UE capability information (100 and / or 200) can be described below. Figures 15 to 18 This is achieved using the devices described. For example, refer to... Figure 15 At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104 to receive UE capability information, and at least one transceiver 106 can receive UE capability information.

[0407] The UE can receive downlink control information (DCI) that triggers a power measurement information report from the BS (S1310). In other words, the BS can send a DCI that triggers a power measurement information report to the UE. For example, as in the second and fourth embodiments described above, the UE can receive a DCI that triggers an aperiodic L1-RSRP report from the BS.

[0408] For example, in step S1310, the UE (e.g., Figures 15 to 18 100 and / or 200 in the range) from BS (e.g., Figures 15 to 18 The operation of receiving DCI (in 100 and / or 200) can be described below. Figures 15 to 18This is achieved using the devices described. For example, refer to... Figure 15 At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104 to receive DCI, and at least one transceiver 106 can receive DCI from BS.

[0409] Similarly, in step S1310, BS (e.g., Figures 15 to 18 (100 and / or 200 in the DCI) will send DCI to UE (e.g., Figures 15 to 18 The operations of 100 and / or 200 in the above can be described below. Figures 15 to 18 This is achieved using the devices described. For example, refer to... Figure 15 At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104 to transmit DCI, and at least one transceiver 106 can transmit DCI to UE.

[0410] The UE can receive a downlink reference signal from the BS for reporting power measurement information (S1315). In other words, the BS can send a downlink reference signal for reporting power measurement information. For example, as in the second and fourth embodiments described above, the downlink reference signal may include CSI-RS and / or SSB. For example, when CSI-RS is based on aperiodic operation in the time domain, the UE may additionally receive a DCI from the base station that schedules (or triggers) the downlink reference signal.

[0411] For example, in step S1315, the UE (e.g., Figures 15 to 18 100 and / or 200 in the range) from BS (e.g., Figures 15 to 18 The operation of receiving downlink reference signals (in 100 and / or 200) can be described below. Figures 15 to 18 This is achieved using the devices described. For example, refer to... Figure 15 At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104 to receive a downlink reference signal, and at least one transceiver 106 can receive the downlink reference signal from the BS.

[0412] Similarly, in step S1315, BS (e.g., Figures 15 to 18 100 and / or 200 in the range) to UE (e.g., Figures 15 to 18 The operation of sending downlink reference signals (in 100 and / or 200) can be described below. Figures 15 to 18 This is achieved using the devices described. For example, refer to... Figure 15At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104 to transmit a downlink reference signal, and at least one transceiver 106 can transmit the downlink reference signal to the UE.

[0413] The UE can send power measurement information determined based on the received downlink reference signal to the BS (S1320). In other words, the BS can receive power measurement information determined based on the received downlink reference signal from the UE. For example, similar to the second and fourth embodiments described above, the UE can send L1-RSRP information determined and / or calculated using CSI-RS and / or SSB to the BS.

[0414] Here, the minimum required time for reporting power measurement information (e.g., the aforementioned value Z) can be (i) calculated as the sum of a first minimum required time (e.g., the aforementioned value Z') from the last timing of the downlink reference signal to the transmission timing of the power measurement information and a second minimum required time (e.g., the aforementioned value m) between the DCI triggering the downlink reference signal and the reception of the downlink reference signal, or (ii) calculated based on a pre-configured threshold related to the reporting of power measurement information. For example, as in the second embodiment described above, the minimum required time Z for L1-RSRP reporting can be calculated and / or determined as the sum of Z' and m. Alternatively, as in the fourth embodiment described above, the minimum required time Z for L1-RSRP reporting can be calculated based on a preset upper limit value.

[0415] For example, when the sum of the first minimum required time and the second minimum required time is greater than a specific value, the minimum required time for reporting power measurement information can be calculated based on a preset threshold for reporting power measurement information.

[0416] For example, in step S1320, the UE (e.g., Figures 15 to 18 100 and / or 200 in the middle) to BS (e.g., Figures 15 to 18 The operation of transmitting power measurement information (in 100 and / or 200) can be described below. Figures 15 to 18 This is achieved using equipment. For example, refer to... Figure 15 At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104, such that power measurement information is transmitted, and at least one transceiver 106 can transmit the power measurement information to the BS.

[0417] Similarly, in step S1320, BS (e.g., Figures 15 to 18 100 and / or 200 in the UE (e.g., Figures 15 to 18The operation of receiving power measurement information (in 100 and / or 200) can be described below. Figures 15 to 18 This is achieved using the devices described. For example, refer to... Figure 15 At least one processor 102 can control at least one transceiver 106 and / or at least one memory 104 to receive power measurement information, and at least one transceiver 106 can receive power measurement information from the UE.

[0418] Furthermore, similar to the second embodiment described above, the number of CSI processing units (CPUs) for reporting power measurement information (e.g., L1-RSRP reports) can be set to 1.

[0419] As described above, the signaling and operations between the BS and / or UE (e.g., the first embodiment / second embodiment / third embodiment / fourth embodiment) can be performed by the devices described below (e.g., Figures 15 to 18 Implemented in the device (e.g., BS). Figures 15 to 18 The 100 and / or 200 in the UE may correspond to the first wireless device, and the UE may correspond to the second wireless device, and the reverse may be considered if necessary.

[0420] For example, the aforementioned signaling and operations between the BS and / or UE (e.g., first implementation / second implementation / third implementation / fourth implementation) can be provided by... Figures 15 to 18 One or more processors (e.g., 102 and / or 202) in the system process it. Additionally, it can be used for driving... Figures 15 to 18 The executable commands / programs (e.g., instructions and executable code) of at least one processor (e.g., 102 and / or 202) are stored in memory (e.g., Figures 15 to 18 The aforementioned signaling and operations between the BS and UE are stored in one or more memories (e.g., 104 and / or 204).

[0421] Examples of using the communication system disclosed herein

[0422] The various descriptions, functions, processes, proposals, methods, and / or operation flowcharts of the invention described in this document can be applied to, but are not limited to, various fields requiring wireless communication / connectivity between devices (e.g., 5G).

[0423] The following description will be provided in more detail with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise stated, the same reference numerals may denote the same or corresponding hardware blocks, software blocks, or functional blocks.

[0424] Figure 14The diagram illustrates the communication system 1 applied to this invention.

[0425] refer to Figure 14 The communication system 1 applied to this invention includes a wireless device, a base station (BS), and a network. Here, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G New RAT (NR)) or Long Term Evolution (LTE), and may be referred to as a communication / radio / 5G device. The wireless device may include, but is not limited to, robots 100a, vehicles 100b-1 and 100b-2, extended reality (XR) devices 100c, handheld devices 100d, home appliances 100e, Internet of Things (IoT) devices 100f, and artificial intelligence (AI) devices / servers 400. For example, a vehicle may include a vehicle with wireless communication capabilities, an autonomous vehicle, and a vehicle capable of performing communication between vehicles. Here, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices, and may be implemented in the form of head-mounted displays (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Handheld devices may include smartphones, smart tablets, wearable devices (e.g., smartwatches or smart glasses), and computers (e.g., laptops). Home appliances may include televisions, refrigerators, and washing machines. Internet of Things (IoT) devices may include sensors and smart meters. For example, the BS and network can be implemented as wireless devices, and a particular wireless device 200a can operate as a BS / network node relative to other wireless devices.

[0426] Wireless devices 100a to 100f can connect to network 300 via BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect to AI server 400 via network 300. Network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via BS 200 / network 300, wireless devices 100a to 100f can also perform direct communication with each other without going through the BS / network (e.g., sidelink communication). For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0427] Wireless communication / connections 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS 200 or between BS 200 and BS 200. These connections can be established via various RATs (e.g., 5G NR), such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay, Integrated Access Backhaul (IAB)). Wireless devices and BS / wireless devices can transmit / receive radio signals to / from each other via wireless communication / connections 150a and 150b. For example, wireless communication / connections 150a and 150b can transmit / receive signals via various physical channels. To this end, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for transmitting / receiving radio signals can be performed based on various proposals of this invention.

[0428] Examples of wireless devices using this disclosure

[0429] Figure 15 The illustration is applicable to the wireless device of this invention.

[0430] refer to Figure 15 The first wireless device 100 and the second wireless device 200 can transmit radio signals via various RATs (e.g., LTE and NR). Here, {first wireless device 100 and second wireless device 200} can correspond to Figure 15 {Wireless Device 100x and BS 200} and / or {Wireless Device 100x and Wireless Device 100x}.

[0431] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and additionally include one or more transceivers 106 and / or one or more antennas 108. The processor 102 may control the memory 104 and / or the transceiver 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 102 may process information in the memory 104 to generate a first information / signal, and then transmit a radio signal including the first information / signal via the transceiver 106. The processor 102 may receive a radio signal including a second information / signal via the transceiver 106, and then store the information obtained by processing the second information / signal in the memory 104. The memory 104 may be connected to the processor 102 and may store various information relating to the operation of the processor 102. For example, the memory 104 may store software code including commands for performing part or all of the processes controlled by the processor 102 or for performing the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Here, processor 102 and memory 104 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). Transceiver 106 may be connected to processor 102 and transmit and / or receive radio signals via one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. Transceiver 106 may be used interchangeably with radio frequency (RF) units. In this invention, a wireless device may represent a communication modem / circuit / chip.

[0432] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and further includes one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 202 may process information in the memory 204 to generate a third message / signal, and then transmit a radio signal including the third message / signal via the transceiver 206. The processor 202 may receive a radio signal including a fourth message / signal via the transceiver 206, and then store the information obtained by processing the fourth message / signal in the memory 204. The memory 204 may be connected to the processor 202 and may store various information relating to the operation of the processor 202. For example, the memory 204 may store software code including commands for performing some or all of the processes controlled by the processor 202 or for performing the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Here, processor 202 and memory 204 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). Transceiver 206 may be connected to processor 202 and transmit and / or receive radio signals via one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. Transceiver 206 may be used interchangeably with an RF unit. In this invention, a wireless device may represent a communication modem / circuit / chip.

[0433] The hardware components of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be implemented by, but not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) based on the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information based on the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information, according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and obtain PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document.

[0434] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field-programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, procedures, or functions. Firmware or software configured to execute the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document may be included in one or more processors 102 and 202, or stored in one or more memories 104 and 204 such that they are driven by one or more processors 102 and 202. The descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of code, commands, and / or command sets.

[0435] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories 104 and 204 may be configured with read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, registers, buffer memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 may be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0436] One or more transceivers 106 and 206 can transmit user data, control information, and / or radio signals / channels as mentioned in the methods and / or operation flowcharts of this document to one or more other devices. One or more transceivers 106 and 206 can receive user data, control information, and / or radio signals / channels as mentioned in the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 can be connected to one or more processors 102 and 202 and transmit and receive radio signals. For example, one or more processors 102 and 202 can perform control such that one or more transceivers 106 and 206 can transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 can perform control such that one or more transceivers 106 and 206 can receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document via one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc., from RF band signals to baseband signals for processing by one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc., processed using one or more processors 102 and 202 from baseband signals to RF band signals. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0437] Examples of signal processing circuits applied to this disclosure

[0438] Figure 16 The diagram shows a signal processing circuit used for transmitting signals.

[0439] refer to Figure 16 The signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a pre-encoder 1040, a resource mapper 1050, and a signal generator 1060. It can perform... Figure 16 Operations / functions, but not limited to Figure 15 Processors 102 and 202 and / or transceivers 106 and 206. Figure 16 The hardware components can be made by Figure 15 The processors 102 and 202 and / or transceivers 106 and 206 are implemented. For example, blocks 1010 to 1060 can be implemented by... Figure 15 Processors 102 and 202 are used for implementation. Alternatively, blocks 1010 to 1050 can be implemented by... Figure 15 Processors 102 and 202 are implemented and block 1060 can be implemented by Figure 15 The transceivers 106 and 206 are implemented.

[0440] It can be done Figure 16 The signal processing circuit 1000 converts codewords into radio signals. Here, a codeword is a bit sequence of encoded information blocks. Information blocks may include transport blocks (e.g., UL-SCH transport blocks, DL-SCH transport blocks). Radio signals can be transmitted through various physical channels (e.g., PUSCH and PDSCH).

[0441] Specifically, the codeword can be converted into a scrambled bit sequence using scrambler 1010. The scrambling sequence can be generated based on an initialization value, which may include the wireless device's ID information. The scrambled bit sequence can be modulated into a modulation symbol sequence using modulator 1020. Modulation schemes may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers using layer mapper 1030. The modulation symbols of each transmission layer can be mapped (pre-coded) to the corresponding antenna port using pre-encoder 1040. The output y of layer mapper 1030 can be multiplied by N... The output z of the precoder 1040 is obtained from the precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 may perform precoding after performing transform precoding (e.g., DFT) on complex modulation symbols. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

[0442] Resource mapper 1050 maps modulation symbols for each antenna port to time-frequency resources. Time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. Signal generator 1060 can generate radio signals from the mapped modulation symbols, and the generated radio signals can be transmitted to other devices via each antenna. For this purpose, signal generator 1060 may include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and a frequency up-converter.

[0443] Can be with Figure 16 The signal processing procedures 1010 to 1060 are configured in reverse order for signal processing procedures used to process signals received in a wireless device. For example, a wireless device (e.g., Figure 15 The receiver (100 and 200) can receive radio signals from the outside via the antenna port / transceiver. The received radio signals can be converted into baseband signals by a signal recovery unit. For this purpose, the signal recovery unit may include a downlink frequency converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Next, the baseband signals can be recovered into codewords through a resource demapping process, a post-encoding process, a demodulation processor, and a descrambling process. The codewords can be recovered into the original information blocks through decoding. Therefore, the signal processing circuitry (not shown) for receiving signals may include a signal recovery unit, a resource demapping unit, a post-encoder, a demodulator, a descrambler, and a decoder.

[0444] Examples of the use of wireless devices applying this disclosure

[0445] Figure 17 The illustration shows another example of a wireless device applied to the present invention. This can be adjusted according to usage / service (see [link]). Figure 14 Wireless devices can be implemented in various forms.

[0446] refer to Figure 17 Wireless devices 100 and 200 can correspond to Figure 15 The wireless devices 100 and 200 can be configured from various elements, components, units / parts, and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional component 140. The communication unit may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include... Figure 15 One or more processors 102 and 202 and / or one or more memories 104 and 204. For example, transceiver 114 may include Figure 15 One or more transceivers 106 and 206 and / or one or more antennas 108 and 208. Control unit 120 is electrically connected to communication unit 110, memory 130, and add-on components 140, and controls the overall operation of the wireless device. For example, control unit 120 can control the electrical / mechanical operation of the wireless device based on programs / code / commands / information stored in memory unit 130. Control unit 120 can transmit information stored in memory unit 130 to an external source (e.g., other communication devices) via communication unit 110 through a wireless / wired interface, or store information received from an external source (e.g., other communication devices) via communication unit 110 through a wireless / wired interface in memory unit 130.

[0447] The additional component 140 can be configured differently depending on the type of wireless device. For example, the additional component 140 may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device can be used in, but is not limited to, robotic applications. Figure 14 100a), vehicles ( Figure 14 100b-1 and 100b-2), XR equipment ( Figure 14 100c), handheld devices ( Figure 14 100d), home appliances ( Figure 14 100e), IoT devices ( Figure 14 100f), digital broadcasting terminals, holographic devices, public safety equipment, MTC equipment, medical equipment, financial technology equipment (or financial equipment), security equipment, climate / environmental equipment, AI servers / equipment ( Figure 14 400), BS ( Figure 14 It is implemented in the form of 200 (network nodes, etc.). Depending on the use case / service, wireless devices can be used in mobile or fixed locations.

[0448] exist Figure 17 In wireless devices 100 and 200, the various elements, components, units / parts, and / or modules as a whole can be connected to each other via a wired interface, or at least a portion thereof can be wirelessly connected via a communication unit. For example, in each of wireless devices 100 and 200, control unit 120 and communication unit 110 can be wired connected, and control unit 120 and first units (e.g., 130 and 140) can be wirelessly connected via communication unit 110. Each element, component, unit / part, and / or module within wireless devices 100 and 200 may further include one or more elements. For example, control unit 120 may consist of a collection of one or more processors. As an example, control unit 120 may consist of a collection of communication control processors, application processors, electronic control units (ECUs), graphics processing units, and memory control processors. As another example, memory 130 may consist of random access memory (RAM), dynamic RAM (DRAM), read-only memory (ROM), flash memory, volatile memory, non-volatile memory, and / or combinations thereof.

[0449] The implementation will be described in detail below with reference to the accompanying drawings. Figure 17 Examples.

[0450] Examples of handheld devices using this disclosure

[0451] Figure 18The illustration applies to a handheld device of the present invention. The handheld device may include a smartphone, smart tablet, wearable device (e.g., a smartwatch or smart glasses), or portable computer (e.g., a laptop computer). The handheld device may be referred to as a mobile station (MS), user terminal (UT), mobile subscriber station (MSS), subscriber station (SS), advanced mobile station (AMS), or wireless terminal (WT).

[0452] refer to Figure 18 The handheld device 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a storage unit 130, a power supply unit 140a, an interface unit 140b, and an I / O unit 140c. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 to 130 / 140a to 140c respectively correspond to... Figure 17 Blocks 110 to 130 / 140.

[0453] Communication unit 110 can send signals (e.g., data and control signals) to other wireless devices or BSs and receive signals (e.g., data and control signals) from other wireless devices or BSs. Control unit 120 can perform various operations by controlling the components of handheld device 100. Control unit 120 may include an application processor (AP). Storage unit 130 can store data / parameters / programs / codes / commands required to drive handheld device 100. Storage unit 130 can store input / output data / information. Power supply unit 140a can supply power to handheld device 100 and includes wired / wireless charging circuitry, a battery, etc. Interface unit 140b can support connection of handheld device 100 to other external devices. Interface unit 140b may include various ports (e.g., audio I / O ports and video I / O ports) for connection to external devices. I / O unit 140c can input or output video information / signals, audio information / signals, data and / or information input by the user. I / O unit 140c may include a camera, microphone, user input unit, display unit 140d, speaker and / or haptic module.

[0454] As an example, in the case of data communication, I / O unit 140c can acquire information / signals input by the user (e.g., touch, text, voice, image, or video), and the acquired information / signals can be stored in storage unit 130. Communication unit 110 can convert the information / signals stored in the memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. Communication unit 110 can receive radio signals from other wireless devices or the BS and then recover the received radio signals into the original information / signals. The recovered information / signals can be stored in storage unit 130 and can be output as various types (e.g., text, voice, image, video, or haptic) through I / O unit 140c.

[0455] In this disclosure, wireless devices can be base stations, network nodes, transmission terminals, receiving terminals, wireless devices, wireless communication devices, vehicles, vehicles equipped with autonomous driving functions, connected cars, drones (or unmanned aerial vehicles (UAVs)), artificial intelligence (AI) modules, robots, augmented reality (AR) devices, virtual reality (VR) devices, mixed reality (MR) devices, holographic devices, public safety devices, MTC devices, IoT devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, devices related to 5G services, or devices related to the Fourth Industrial Revolution. For example, a drone can be an aircraft that flies via wireless control signals without a human on board. For example, MTC devices and IoT devices can be devices that do not require direct human intervention or manipulation, and can include smart meters, vending machines, thermometers, smart light bulbs, door locks, or various sensors. For example, medical devices can be devices for diagnosing, treating, reducing, managing, or preventing disease, as well as devices for testing, replacing, or modifying structures or functions, and can include devices for medical treatment, devices for surgery, devices for (external) diagnosis, hearing aids, or surgical devices. For example, security equipment can be devices installed to prevent potential dangers and maintain security, and can be cameras, closed-circuit television (CCTV), recorders, or black boxes. For example, fintech equipment can be devices capable of providing financial services such as mobile payments, and can be payment devices, point-of-sale (POS) devices, etc. For example, climate / environmental equipment can include devices used to monitor or predict climate / environment.

[0456] In this disclosure, terminals include portable telephones, smartphones, laptop computers, terminals for digital broadcasting, personal digital assistants (PDAs), portable multimedia players (PMPs), navigators, tablet PCs, PCBs, ultrabooks, wearable devices (e.g., watch-type terminals (smartwatches), glasses-type terminals (smart glasses), head-mounted displays (HMDs)), foldable devices, etc. For example, an HMD can be a display device worn on the head and can be used to implement VR or AR.

[0457] The above embodiments are implemented by combining the structural elements and features of this disclosure in a predetermined manner. Each structural element or feature should be considered selectively unless otherwise specified. Each of the structural elements or features may be performed without needing to be combined with other structural elements or features. Furthermore, some structural elements and / or features may be combined with each other to constitute embodiments of this disclosure. The order of operations described in embodiments of this disclosure may be changed. Some structural elements or features of one embodiment may be included in another embodiment, or may be replaced by corresponding structural elements or features of another embodiment. Moreover, it will be apparent that some claims relating to a particular claim may be combined with another claim relating to other claims constituting an embodiment, or new claims may be added after filing the application by means of modification.

[0458] The embodiments of this disclosure can be implemented by various means, such as hardware, firmware, software, or combinations thereof. In a hardware configuration, the methods according to the embodiments of this disclosure can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.

[0459] In firmware or software configurations, embodiments of this disclosure can be implemented in the form of modules, processes, functions, etc. Software code can be stored in memory and executed by a processor. The memory can be located internally or externally to the processor, and data can be sent to and received from the processor via various known means.

[0460] It will be apparent to those skilled in the art that various modifications and variations can be made to this disclosure without departing from the spirit or scope of the invention. Therefore, this invention is intended to cover any modifications and variations falling within the scope of the appended claims and their equivalents.

[0461] Industrial applicability

[0462] The scheme disclosed herein for transmitting and receiving channel state information in a wireless communication system has been illustrated for application in 3GPP LTE / LTE-A systems and 5G systems (new RAT systems), but can be applied to various other wireless communication systems.

Claims

1. A method for transmitting power measurement information by a user equipment (UE) in a wireless communication system, the method comprising: The UE receives downlink control information (DCI) that triggers the report of the power measurement information; The UE receives a downlink reference signal for the report of the power measurement information; as well as A report of the power measurement information determined based on the downlink reference signal is sent to the base station. The report based on the power measurement information is configured for Layer 1 Reference Signal Received Power (L1-RSRP) reporting: for a subcarrier spacing of 120 kHz, the minimum required time for the report of the power measurement information is determined based on (i) the sum of a first timing parameter and a second timing parameter, or (ii) an upper limit value. Wherein, for the first timing parameter having a value of 14, the minimum required time for reporting the power measurement information is determined based on the sum of the first timing parameter and the second timing parameter. Wherein, for the first timing parameter having a value of either 224 or 336, the minimum required time for reporting the power measurement information is determined based on the upper limit value. Wherein, the first timing parameter is related to the first duration between the triggering of DCI and the downlink reference signal, and The second timing parameter is related to a second duration between the last timing of the downlink reference signal and the transmission timing of the report.

2. The method according to claim 1, wherein, The downlink reference signal is at least one of the channel state information-reference signal (CSI-RS) or synchronization signal block.

3. The method according to claim 1, wherein, The downlink reference signal is configured as an aperiodic reference signal.

4. The method according to claim 1, further comprising: Send UE capability information to the base station; Information regarding the first timing parameter is reported as the UE capability information.

5. The method according to claim 1, wherein, The report includes (i) CSI-RS Resource Indicator (CRI) and RSRP, or (ii) Synchronization Signal Block (SSB) Identifier and RSRP.

6. The method according to claim 1, wherein, The method further includes: The L1-RSRP value is calculated based on the downlink reference signal; and The L1-RSRP value is included as part of the report sent to the base station.

7. A user equipment (UE) configured to transmit power measurement information in a wireless communication system, the UE comprising: At least one transceiver; At least one processor; as well as At least one computer memory, connected to the at least one processor and storing instructions that perform operations based on execution by the at least one processor, the operations including: The at least one transceiver receives downlink control information (DCI) that triggers the report of the power measurement information. The at least one transceiver is used to receive a downlink reference signal for the power measurement information report; and The at least one transceiver transmits a report of the power measurement information determined based on the downlink reference signal to the base station. The report based on the power measurement information is configured for Layer 1 Reference Signal Received Power (L1-RSRP) reporting: for a subcarrier spacing of 120 kHz, the minimum required time for the report of the power measurement information is determined based on (i) the sum of a first timing parameter and a second timing parameter, or (ii) an upper limit value. Wherein, for the first timing parameter having a value of 14, the minimum required time for reporting the power measurement information is determined based on the sum of the first timing parameter and the second timing parameter. Wherein, for the first timing parameter having a value of either 224 or 336, the minimum required time for reporting the power measurement information is determined based on the upper limit value. Wherein, the first timing parameter is related to the first duration between the triggering of DCI and the downlink reference signal, and The second timing parameter is related to a second duration between the last timing of the downlink reference signal and the transmission timing of the report.

8. The UE according to claim 7, wherein, The downlink reference signal is at least one of the channel state information-reference signal (CSI-RS) or synchronization signal block.

9. The UE according to claim 7, wherein, The downlink reference signal is configured as an aperiodic reference signal.

10. The UE according to claim 7, wherein, The operation further includes: Send UE capability information to the base station; Information regarding the first timing parameter is reported as the UE capability information.

11. The UE according to claim 7, wherein, The report includes (i) CSI-RS Resource Indicator (CRI) and RSRP, or (ii) Synchronization Signal Block (SSB) Identifier and RSRP.

12. The UE according to claim 7, wherein, The operation further includes: The L1-RSRP value is calculated based on the downlink reference signal; and The L1-RSRP value is included as part of the report sent to the base station.

13. A method for receiving power measurement information by a base station in a wireless communication system, the method comprising: Send downlink control information (DCI) to the user equipment (UE) that triggers a report of the power measurement information; Send a downlink reference signal to the UE for reporting the power measurement information; as well as The UE receives a report of the power measurement information determined based on the downlink reference signal. The report based on the power measurement information is configured for Layer 1 Reference Signal Received Power (L1-RSRP) reporting: for a subcarrier spacing of 120 kHz, the minimum required time for the report of the power measurement information is determined based on (i) the sum of a first timing parameter and a second timing parameter, or (ii) an upper limit value. Wherein, for the first timing parameter having a value of 14: the minimum required time for reporting the power measurement information is determined based on the sum of the first timing parameter and the second timing parameter. Wherein, for the first timing parameter having a value of either 224 or 336, the minimum required time for reporting the power measurement information is determined based on the upper limit value. Wherein, the first timing parameter is related to the first duration between the triggering of DCI and the downlink reference signal, and The second timing parameter is related to a second duration between the last timing of the downlink reference signal and the transmission timing of the report.

14. A base station configured to receive power measurement information in a wireless communication system, the base station comprising: At least one transceiver; At least one processor; as well as At least one computer memory, connected to the at least one processor and storing instructions that perform operations based on execution by the at least one processor, the operations including: The downlink control information (DCI) that triggers the reporting of the power measurement information is sent to the user equipment (UE) via the at least one transceiver. The downlink reference signal for reporting the power measurement information is transmitted to the UE via the at least one transceiver; and The at least one transceiver receives a report from the UE of the power measurement information determined based on the downlink reference signal. The report based on the power measurement information is configured for Layer 1 Reference Signal Received Power (L1-RSRP) reporting: for a subcarrier spacing of 120 kHz, the minimum required time for the report of the power measurement information is determined based on (i) the sum of a first timing parameter and a second timing parameter, or (ii) an upper limit value. Wherein, for the first timing parameter having a value of 14, the minimum required time for reporting the power measurement information is determined based on the sum of the first timing parameter and the second timing parameter. Wherein, for the first timing parameter having a value of either 224 or 336, the minimum required time for reporting the power measurement information is determined based on the upper limit value. Wherein, the first timing parameter is related to the first duration between the triggering of DCI and the downlink reference signal, and The second timing parameter is related to a second duration between the last timing of the downlink reference signal and the transmission timing of the report.

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