Communication based on dual connectivity

Abstract

The present disclosure provides a UE. The UE includes at least one transceiver; at least one processor; and at least one memory that stores instructions and is operatively electrically connectable with the at least one processor. Operations performed based on the command being executed by the at least one processor may include: transmitting capability information to a base station; and transmitting uplink signal to the base station based on a configured maximum output power.

Description

COMMUNICATION BASED ON DUAL CONNECTIVITY

[0001] The present specification relates to a radio communication.

[0002] 3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communications. Many schemes have been proposed for the LTE objective including those that aim to reduce user and provider costs, improve service quality, and expand and improve coverage and system capacity. The 3GPP LTE requires reduced cost per bit, increased service availability, flexible use of a frequency band, a simple structure, an open interface, and adequate power consumption of a terminal as an upper-level requirement.

[0003] Work has started in international telecommunication union (ITU) and 3GPP to develop requirements and specifications for new radio (NR) systems. 3GPP has to identify and develop the technology components needed for successfully standardizing the new RAT timely satisfying both the urgent market needs, and the more long-term requirements set forth by the ITU radio communication sector (ITU-R) international mobile telecommunications (IMT)-2020 process. Further, the NR should be able to use any spectrum band ranging at least up to 110 GHz that may be made available for wireless communications even in a more distant future.

[0004] The NR targets a single technical framework addressing all usage scenarios, requirements and deployment scenarios including enhanced mobile broadband (eMBB), massive machine-type-communications (mMTC), ultra-reliable and low latency communications (URLLC), etc. The NR shall be inherently forward compatible.

[0005] A User Equipment (UE) may transmit signal or receive signal based on Dual Connectivity(DC). In prior arts, a UE supporting high transmission power (e.g., power class 1.5) cannot perform communication based on EN-DC. In the prior art, a high power UE (e.g., a UE supporting power class 1.5) could not support EN-DC. This resulted in limited coverage for the high power UE.

[0006] In one aspect, a device is provided. The device includes at least one transceiver; at least one processor; and at least one memory that stores instructions and is operatively electrically connectable with the at least one processor. Operations performed based on the command being executed by the at least one processor may include: transmitting capability information to a base station; and transmitting uplink signal to the base station based on a configured maximum output power.

[0007] In another aspect, a method performed by the device is provided.

[0008] In one aspect, a base station is provided. The base station includes at least one transceiver; at least one processor; and at least one memory that stores instructions and is operatively electrically connectable with the at least one processor. Operations performed based on the command being executed by the at least one processor may include: receiving capability information from a device; and receiving uplink signal from the device.

[0009] In another aspect, a method by which the base station performs is provided.

[0010] FIG. 1 shows an example of a communication system to which implementations of the present disclosure is applied.

[0011] FIG. 2 shows an example of wireless devices to which implementations of the present disclosure is applied.

[0012] FIG. 3 shows an example of a wireless device to which implementations of the present disclosure is applied.

[0013] FIG. 4 is a diagram showing an example of a communication structure that can be provided in a 6G system.

[0014] FIG. 5 shows an example of an electromagnetic spectrum.

[0015] FIGS. 6a through 6e shows an example of RACH procedures applicable to an embodiment of the present disclosure.

[0016] FIG. 7 shows an example of fram structure type 2.

[0017] FIGS. 8a and 8b show a first examples of average transmitted power for PC2 EN-DC according to an embodiment of the present disclosure.

[0018] FIGS. 9a and 9b show a second examples of average transmitted power for PC2 EN-DC according to an embodiment of the present disclosure.

[0019] FIGS. 10a and 10b show a third examples of average transmitted power for PC2 EN-DC according to an embodiment of the present disclosure.

[0020] FIGS. 11a and 11b show a first examples of average transmitted power for PC1.5 EN-DC according to an embodiment of the present disclosure.

[0021] FIG. 12 illustrates an example of an operation according to an embodiment of the present disclosure.

[0022] FIGS. 13a and 13b show a second examples of average transmitted power for PC1.5 EN-DC according to an embodiment of the present disclosure.

[0023] FIGS. 14a and 14b show a third examples of average transmitted power for PC1.5 EN-DC according to an embodiment of the present disclosure.

[0024] FIG. 15 illustrates an example of an operation according to an embodiment of the present disclosure.

[0025] The following techniques, apparatuses, and systems may be applied to a variety of wireless multiple access systems. Examples of the multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a single carrier frequency division multiple access (SC-FDMA) system, and a multicarrier frequency division multiple access (MC-FDMA) system. CDMA may be embodied through radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be embodied through radio technology such as global system for mobile communications (GSM), general packet radio service (GPRS), or enhanced data rates for GSM evolution (EDGE). OFDMA may be embodied through radio technology such as institute of electrical and electronics engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or evolved UTRA (E-UTRA). UTRA is a part of a universal mobile telecommunications system (UMTS). 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE employs OFDMA in DL and SC-FDMA in UL. Evolution of 3GPP LTE includes LTE-A (advanced), LTE-A Pro, and / or 5G NR (new radio).

[0026] For convenience of description, implementations of the present disclosure are mainly described in regard to a 3GPP based wireless communication system. However, the technical features of the present disclosure are not limited thereto. For example, although the following detailed description is given based on a mobile communication system corresponding to a 3GPP based wireless communication system, aspects of the present disclosure that are not limited to 3GPP based wireless communication system are applicable to other mobile communication systems.

[0027] For terms and technologies which are not specifically described among the terms of and technologies employed in the present disclosure, the wireless communication standard documents published before the present disclosure may be referenced.

[0028] In the present disclosure, "A or B" may mean "only A", "only B", or "both A and B". In other words, "A or B" in the present disclosure may be interpreted as "A and / or B". For example, "A, B or C" in the present disclosure may mean "only A", "only B", "only C", or "any combination of A, B and C".

[0029] In the present disclosure, slash ( / ) or comma (,) may mean "and / or". For example, "A / B" may mean "A and / or B". Accordingly, "A / B" may mean "only A", "only B", or "both A and B". For example, "A, B, C" may mean "A, B or C".

[0030] In the present disclosure, "at least one of A and B" may mean "only A", "only B" or "both A and B". In addition, the expression "at least one of A or B" or "at least one of A and / or B" in the present disclosure may be interpreted as same as "at least one of A and B".

[0031] In addition, in the present disclosure, "at least one of A, B and C" may mean "only A", "only B", "only C", or "any combination of A, B and C". In addition, "at least one of A, B or C" or "at least one of A, B and / or C" may mean "at least one of A, B and C".

[0032] Also, parentheses used in the present disclosure may mean "for example". In detail, when it is shown as "control information (PDCCH)", "PDCCH" may be proposed as an example of "control information". In other words, "control information" in the present disclosure is not limited to "PDCCH", and "PDCCH" may be proposed as an example of "control information". In addition, even when shown as "control information (i.e., PDCCH)", "PDCCH" may be proposed as an example of "control information".

[0033] Technical features that are separately described in one drawing in the present disclosure may be implemented separately or simultaneously.

[0034] Although not limited thereto, various descriptions, functions, procedures, suggestions, methods and / or operational flowcharts of the present disclosure disclosed herein can be applied to various fields requiring wireless communication and / or connection (e.g., 5G) between devices.

[0035] Hereinafter, the present disclosure will be described in more detail with reference to drawings. The same reference numerals in the following drawings and / or descriptions may refer to the same and / or corresponding hardware blocks, software blocks, and / or functional blocks unless otherwise indicated.

[0036] Although a user equipment (UE) is illustrated by way of example in the accompanying drawings, the illustrated UE may be referred to as a terminal, mobile equipment (ME), and the like. In addition, the UE may be a portable device such as a notebook computer, a mobile phone, a PDA, a smartphone, and a multimedia device or may be a non-portable device such as a PC or a vehicle-mounted device.

[0037] Hereinafter, a UE is used as an example of a wireless communication device (or a wireless device or wireless equipment) capable of wireless communication. An operation performed by a UE may be performed by a wireless communication device. A wireless communication device may also be referred to as a wireless device, wireless equipment, or the like. Hereinafter, AMF may mean an AMF node, SMF may mean an SMF node, and UPF may mean a UPF node.

[0038] A base station used below generally refers to a fixed station communicating with a wireless device and may also be referred as an evolved-NodeB (eNodeB), an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, and a next generation NodeB (gNB).

[0039] FIG. 1 shows an example of a communication system to which implementations of the present disclosure is applied.

[0040] The 5G usage scenarios shown in FIG. 1 are only exemplary, and the technical features of the present disclosure can be applied to other 5G usage scenarios which are not shown in FIG. 1.

[0041] Three main requirement categories for 5G include (1) a category of enhanced mobile broadband (eMBB), (2) a category of massive machine type communication (mMTC), and (3) a category of ultra-reliable and low latency communications (URLLC).

[0042] Partial use cases may require a plurality of categories for optimization and other use cases may focus only upon one key performance indicator (KPI). 5G supports such various use cases using a flexible and reliable method.

[0043] eMBB far surpasses basic mobile Internet access and covers abundant bidirectional work and media and entertainment applications in cloud and augmented reality. Data is one of 5G core motive forces and, in a 5G era, a dedicated voice service may not be provided for the first time. In 5G, it is expected that voice will be simply processed as an application program using data connection provided by a communication system. Main causes for increased traffic volume are due to an increase in the size of content and an increase in the number of applications requiring high data transmission rate. A streaming service (of audio and video), conversational video, and mobile Internet access will be more widely used as more devices are connected to the Internet. These many application programs require connectivity of an always turned-on state in order to push real-time information and alarm for users. Cloud storage and applications are rapidly increasing in a mobile communication platform and may be applied to both work and entertainment. The cloud storage is a special use case which accelerates growth of uplink data transmission rate. 5G is also used for remote work of cloud. When a tactile interface is used, 5G demands much lower end-to-end latency to maintain user good experience. Entertainment, for example, cloud gaming and video streaming, is another core element which increases demand for mobile broadband capability. Entertainment is essential for a smartphone and a tablet in any place including high mobility environments such as a train, a vehicle, and an airplane. Other use cases are augmented reality for entertainment and information search. In this case, the augmented reality requires very low latency and instantaneous data volume.

[0044] In addition, one of the most expected 5G use cases relates a function capable of smoothly connecting embedded sensors in all fields, i.e., mMTC. It is expected that the number of potential Internet-of-things (IoT) devices will reach 204 hundred million up to the year of 2020. An industrial IoT is one of categories of performing a main role enabling a smart city, asset tracking, smart utility, agriculture, and security infrastructure through 5G.

[0045] URLLC includes a new service that will change industry through remote control of main infrastructure and an ultra-reliable / available low-latency link such as a self-driving vehicle. A level of reliability and latency is essential to control a smart grid, automatize industry, achieve robotics, and control and adjust a drone.

[0046] 5G is a means of providing streaming evaluated as a few hundred megabits per second to gigabits per second and may complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS). Such fast speed is needed to deliver TV in resolution of 4K or more (6K, 8K, and more), as well as virtual reality and augmented reality. Virtual reality (VR) and augmented reality (AR) applications include almost immersive sports games. A specific application program may require a special network configuration. For example, for VR games, gaming companies need to incorporate a core server into an edge network server of a network operator in order to minimize latency.

[0047] Automotive is expected to be a new important motivated force in 5G together with many use cases for mobile communication for vehicles. For example, entertainment for passengers requires high simultaneous capacity and mobile broadband with high mobility. This is because future users continue to expect connection of high quality regardless of their locations and speeds. Another use case of an automotive field is an AR dashboard. The AR dashboard causes a driver to identify an object in the dark in addition to an object seen from a front window and displays a distance from the object and a movement of the object by overlapping information talking to the driver. In the future, a wireless module enables communication between vehicles, information exchange between a vehicle and supporting infrastructure, and information exchange between a vehicle and other connected devices (e.g., devices accompanied by a pedestrian). A safety system guides alternative courses of a behavior so that a driver may drive more safely drive, thereby lowering the danger of an accident. The next stage will be a remotely controlled or self-driven vehicle. This requires very high reliability and very fast communication between different self-driven vehicles and between a vehicle and infrastructure. In the future, a self-driven vehicle will perform all driving activities and a driver will focus only upon abnormal traffic that the vehicle cannot identify. Technical requirements of a self-driven vehicle demand ultra-low latency and ultra-high reliability so that traffic safety is increased to a level that cannot be achieved by human being.

[0048] A smart city and a smart home / building mentioned as a smart society will be embedded in a high-density wireless sensor network. A distributed network of an intelligent sensor will identify conditions for costs and energy-efficient maintenance of a city or a home. Similar configurations may be performed for respective households. All of temperature sensors, window and heating controllers, burglar alarms, and home appliances are wirelessly connected. Many of these sensors are typically low in data transmission rate, power, and cost. However, real-time HD video may be demanded by a specific type of device to perform monitoring.

[0049] Consumption and distribution of energy including heat or gas is distributed at a higher level so that automated control of the distribution sensor network is demanded. The smart grid collects information and connects the sensors to each other using digital information and communication technology so as to act according to the collected information. Since this information may include behaviors of a supply company and a consumer, the smart grid may improve distribution of fuels such as electricity by a method having efficiency, reliability, economic feasibility, production sustainability, and automation. The smart grid may also be regarded as another sensor network having low latency.

[0050] Mission critical application (e.g., e-health) is one of 5G use scenarios. A health part contains many application programs capable of enjoying benefit of mobile communication. A communication system may support remote treatment that provides clinical treatment in a faraway place. Remote treatment may aid in reducing a barrier against distance and improve access to medical services that cannot be continuously available in a faraway rural area. Remote treatment is also used to perform important treatment and save lives in an emergency situation. The wireless sensor network based on mobile communication may provide remote monitoring and sensors for parameters such as heart rate and blood pressure.

[0051] Wireless and mobile communication gradually becomes important in the field of an industrial application. Wiring is high in installation and maintenance cost. Therefore, a possibility of replacing a cable with reconstructible wireless links is an attractive opportunity in many industrial fields. However, in order to achieve this replacement, it is necessary for wireless connection to be established with latency, reliability, and capacity similar to those of the cable and management of wireless connection needs to be simplified. Low latency and a very low error probability are new requirements when connection to 5G is needed.

[0052] Logistics and freight tracking are important use cases for mobile communication that enables inventory and package tracking anywhere using a location-based information system. The use cases of logistics and freight typically demand low data rate but require location information with a wide range and reliability.

[0053] Referring to FIG. 1, the communication system 1 includes wireless devices 100a to 100f, base stations (BSs) 200, and a network 300. Although FIG. 1 illustrates a 5G network as an example of the network of the communication system 1, the implementations of the present disclosure are not limited to the 5G system, and can be applied to the future communication system beyond the 5G system.

[0054] The BSs 200 and the network 300 may be implemented as wireless devices and a specific wireless device may operate as a BS / network node with respect to other wireless devices.

[0055] The wireless devices 100a to 100f represent devices performing communication using radio access technology (RAT) (e.g., 5G new RAT (NR)) or LTE) and may be referred to as communication / radio / 5G devices. The wireless devices 100a to 100f may include, without being limited to, a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a hand-held device 100d, a home appliance 100e, an IoT device 100f, and an artificial intelligence (AI) device / server 400. For example, the vehicles may include a vehicle having a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles. The vehicles may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device may include an AR / VR / Mixed Reality (MR) device and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) mounted in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. The hand-held device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or a smartglasses), and a computer (e.g., a notebook). The home appliance may include a TV, a refrigerator, and a washing machine. The IoT device may include a sensor and a smartmeter.

[0056] In the present disclosure, the wireless devices 100a to 100f may be called user equipments (UEs). A UE may include, for example, a cellular phone, a smartphone, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate personal computer (PC), a tablet PC, an ultrabook, a vehicle, a vehicle having an autonomous traveling function, a connected car, an UAV, an AI module, a robot, an AR device, a VR device, an MR device, a hologram device, a public safety device, an MTC device, an IoT device, a medical device, a FinTech device (or a financial device), a security device, a weather / environment device, a device related to a 5G service, or a device related to a fourth industrial revolution field.

[0057] The UAV may be, for example, an aircraft aviated by a wireless control signal without a human being onboard.

[0058] The VR device may include, for example, a device for implementing an object or a background of the virtual world. The AR device may include, for example, a device implemented by connecting an object or a background of the virtual world to an object or a background of the real world. The MR device may include, for example, a device implemented by merging an object or a background of the virtual world into an object or a background of the real world. The hologram device may include, for example, a device for implementing a stereoscopic image of 360 degrees by recording and reproducing stereoscopic information, using an interference phenomenon of light generated when two laser lights called holography meet.

[0059] The public safety device may include, for example, an image relay device or an image device that is wearable on the body of a user.

[0060] The MTC device and the IoT device may be, for example, devices that do not require direct human intervention or manipulation. For example, the MTC device and the IoT device may include smartmeters, vending machines, thermometers, smartbulbs, door locks, or various sensors.

[0061] The medical device may be, for example, a device used for the purpose of diagnosing, treating, relieving, curing, or preventing disease. For example, the medical device may be a device used for the purpose of diagnosing, treating, relieving, or correcting injury or impairment. For example, the medical device may be a device used for the purpose of inspecting, replacing, or modifying a structure or a function. For example, the medical device may be a device used for the purpose of adjusting pregnancy. For example, the medical device may include a device for treatment, a device for operation, a device for (in vitro) diagnosis, a hearing aid, or a device for procedure.

[0062] The security device may be, for example, a device installed to prevent a danger that may arise and to maintain safety. For example, the security device may be a camera, a closed-circuit TV (CCTV), a recorder, or a black box.

[0063] The FinTech device may be, for example, a device capable of providing a financial service such as mobile payment. For example, the FinTech device may include a payment device or a point of sales (POS) system.

[0064] The weather / environment device may include, for example, a device for monitoring or predicting a weather / environment.

[0065] The wireless devices 100a to 100f may be connected to the network 300 via the BSs 200. An AI technology may be applied to the wireless devices 100a to 100f and the wireless devices 100a to 100f may be connected to the AI server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, and a beyond-5G network. Although the wireless devices 100a to 100f may communicate with each other through the BSs 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., sidelink communication) with each other without passing through the BSs 200 / network 300. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). The IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0066] Wireless communication / connections 150a, 150b and 150c may be established between the wireless devices 100a to 100f and / or between wireless device 100a to 100f and BS 200 and / or between BSs 200. Herein, the wireless communication / connections may be established through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication (or device-to-device (D2D) communication) 150b, inter-base station communication 150c (e.g., relay, integrated access and backhaul (IAB)), etc. The wireless devices 100a to 100f and the BSs 200 / the wireless devices 100a to 100f may transmit / receive radio signals to / from each other through the wireless communication / connections 150a, 150b and 150c. For example, the wireless communication / connections 150a, 150b and 150c may transmit / receive signals through various physical channels. To this end, at least a part of various configuration information configuring processes, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, and resource mapping / de-mapping), and resource allocating processes, for transmitting / receiving radio signals, may be performed based on the various proposals of the present disclosure.

[0067] AI refers to the field of studying artificial intelligence or the methodology that can create it, and machine learning refers to the field of defining various problems addressed in the field of AI and the field of methodology to solve them. Machine learning is also defined as an algorithm that increases the performance of a task through steady experience on a task.

[0068] Robot means a machine that automatically processes or operates a given task by its own ability. In particular, robots with the ability to recognize the environment and make self-determination to perform actions can be called intelligent robots. Robots can be classified as industrial, medical, home, military, etc., depending on the purpose or area of use. The robot can perform a variety of physical operations, such as moving the robot joints with actuators or motors. The movable robot also includes wheels, brakes, propellers, etc., on the drive, allowing it to drive on the ground or fly in the air.

[0069] Autonomous driving means a technology that drives on its own, and autonomous vehicles mean vehicles that drive without user's control or with minimal user's control. For example, autonomous driving may include maintaining lanes in motion, automatically adjusting speed such as adaptive cruise control, automatic driving along a set route, and automatically setting a route when a destination is set. The vehicle covers vehicles equipped with internal combustion engines, hybrid vehicles equipped with internal combustion engines and electric motors, and electric vehicles equipped with electric motors, and may include trains, motorcycles, etc., as well as cars. Autonomous vehicles can be seen as robots with autonomous driving functions.

[0070] Extended reality is collectively referred to as VR, AR, and MR. VR technology provides objects and backgrounds of real world only through computer graphic (CG) images. AR technology provides a virtual CG image on top of a real object image. MR technology is a CG technology that combines and combines virtual objects into the real world. MR technology is similar to AR technology in that they show real and virtual objects together. However, there is a difference in that in AR technology, virtual objects are used as complementary forms to real objects, while in MR technology, virtual objects and real objects are used as equal personalities.

[0071] NR supports multiples numerologies (and / or multiple subcarrier spacings (SCS)) to support various 5G services. For example, if SCS is 15 kHz, wide area can be supported in traditional cellular bands, and if SCS is 30 kHz / 60 kHz, dense-urban, lower latency, and wider carrier bandwidth can be supported. If SCS is 60 kHz or higher, bandwidths greater than 24.25 GHz can be supported to overcome phase noise.

[0072] The NR frequency band may be defined as two types of frequency range, i.e., FR1 and FR2. The numerical value of the frequency range may be changed. For example, the frequency ranges of the two types (FR1 and FR2) may be as shown in Table 1 below. For ease of explanation, in the frequency ranges used in the NR system, FR1 may mean "sub 6 GHz range", FR2 may mean "above 6 GHz range," and may be referred to as millimeter wave (mmW). FR2 may include FR 2-1 and FR 2-2, as shown in the examples in Table 1 and Table 2.

[0073] Frequency Range designationCorresponding frequency rangeSubcarrier SpacingFR1450MHz - 6000MHz15, 30, 60kHzFR2FR2-124250MHz - 52600MHz60, 120, 240kHzFR2-257000MHz - 71000MHz120, 480, 960kHz

[0074] As mentioned above, the numerical value of the frequency range of the NR system may be changed. For example, FR1 may include a frequency band of 410MHz to 7125MHz as shown in Table 2 below. That is, FR1 may include a frequency band of 6GHz (or 5850, 5900, 5925 MHz, etc.) or more. For example, a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or more included in FR1 may include an unlicensed band. Unlicensed bands may be used for a variety of purposes, for example for communication for vehicles (e.g., autonomous driving).

[0075] Frequency Range designationCorresponding frequency rangeSubcarrier SpacingFR1410MHz - 7125MHz15, 30, 60kHzFR2FR2-124250MHz - 52600MHz60, 120, 240kHzFR2-257000MHz - 71000MHz120, 480, 960kHz

[0076] Here, the radio communication technologies implemented in the wireless devices in the present disclosure may include narrowband internet-of-things (NB-IoT) technology for low-power communication as well as LTE, NR and 6G. For example, NB-IoT technology may be an example of low power wide area network (LPWAN) technology, may be implemented in specifications such as LTE Cat NB1 and / or LTE Cat NB2, and may not be limited to the above-mentioned names. Additionally, and / or alternatively, the radio communication technologies implemented in the wireless devices in the present disclosure may communicate based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and be called by various names such as enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented in at least one of the various specifications, such as 1) LTE Cat 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and may not be limited to the above-mentioned names. Additionally, and / or alternatively, the radio communication technologies implemented in the wireless devices in the present disclosure may include at least one of ZigBee, Bluetooth, and / or LPWAN which take into account low-power communication, and may not be limited to the above-mentioned names. For example, ZigBee technology may generate personal area networks (PANs) associated with small / low-power digital communication based on various specifications such as IEEE 802.15.4 and may be called various names.

[0077] FIG. 2 shows an example of wireless devices to which implementations of the present disclosure is applied.

[0078] Referring to FIG. 2, a first wireless device 100 and a second wireless device 200 may transmit / receive radio signals to / from an external device through a variety of RATs (e.g., LTE and NR).

[0079] In FIG. 2, {the first wireless device 100 and the second wireless device 200} may correspond to at least one of {the wireless device 100a to 100f and the BS 200}, {the wireless device 100a to 100f and the wireless device 100a to 100f} and / or {the BS 200 and the BS 200} of FIG. 1.

[0080] The first wireless device 100 may include at least one transceiver, such as a transceiver 106, at least one processing chip, such as a processing chip 101, and / or one or more antennas 108.

[0081] The processing chip 101 may include at least one processor, such a processor 102, and at least one memory, such as a memory 104. It is exemplarily shown in FIG. 2 that the memory 104 is included in the processing chip 101. Additional and / or alternatively, the memory 104 may be placed outside of the processing chip 101.

[0082] The processor 102 may control the memory 104 and / or the transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts described in the present disclosure. For example, the processor 102 may process information within the memory 104 to generate first information / signals and then transmit radio signals including the first information / signals through the transceiver 106. The processor 102 may receive radio signals including second information / signals through the transceiver 106 and then store information obtained by processing the second information / signals in the memory 104.

[0083] The memory 104 may be operably connectable to the processor 102. The memory 104 may store various types of information and / or instructions. The memory 104 may store a software code 105 which implements instructions that, when executed by the processor 102, perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure. For example, the software code 105 may implement instructions that, when executed by the processor 102, perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure. For example, the software code 105 may control the processor 102 to perform one or more protocols. For example, the software code 105 may control the processor 102 to perform one or more layers of the radio interface protocol.

[0084] Herein, the processor 102 and the memory 104 may be a part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and / or receive radio signals through one or more antennas 108. Each of the transceiver 106 may include a transmitter and / or a receiver. The transceiver 106 may be interchangeably used with radio frequency (RF) unit(s). In the present disclosure, the first wireless device 100 may represent a communication modem / circuit / chip.

[0085] The second wireless device 200 may include at least one transceiver, such as a transceiver 206, at least one processing chip, such as a processing chip 201, and / or one or more antennas 208.

[0086] The processing chip 201 may include at least one processor, such a processor 202, and at least one memory, such as a memory 204. It is exemplarily shown in FIG. 2 that the memory 204 is included in the processing chip 201. Additional and / or alternatively, the memory 204 may be placed outside of the processing chip 201.

[0087] The processor 202 may control the memory 204 and / or the transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts described in the present disclosure. For example, the processor 202 may process information within the memory 204 to generate third information / signals and then transmit radio signals including the third information / signals through the transceiver 206. The processor 202 may receive radio signals including fourth information / signals through the transceiver 106 and then store information obtained by processing the fourth information / signals in the memory 204.

[0088] The memory 204 may be operably connectable to the processor 202. The memory 204 may store various types of information and / or instructions. The memory 204 may store a software code 205 which implements instructions that, when executed by the processor 202, perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure. For example, the software code 205 may implement instructions that, when executed by the processor 202, perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure. For example, the software code 205 may control the processor 202 to perform one or more protocols. For example, the software code 205 may control the processor 202 to perform one or more layers of the radio interface protocol.

[0089] Herein, the processor 202 and the memory 204 may be a part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and / or receive radio signals through one or more antennas 208. Each of the transceiver 206 may include a transmitter and / or a receiver. The transceiver 206 may be interchangeably used with RF unit. In the present disclosure, the second wireless device 200 may represent a communication modem / circuit / chip.

[0090] Hereinafter, hardware elements of the wireless devices 100 and 200 will be described more specifically. One or more protocol layers may be implemented by, without being limited to, one or more processors 102 and 202. For example, the one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as physical (PHY) layer, media access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, radio resource control (RRC) layer, and service data adaptation protocol (SDAP) layer). The one or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data unit (SDUs) according to the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure. The one or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure. The 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, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure and provide the generated signals to the one or more transceivers 106 and 206. The one or more processors 102 and 202 may receive the signals (e.g., baseband signals) from the one or more transceivers 106 and 206 and acquire the PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure.

[0091] The one or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. The one or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in the one or more processors 102 and 202. The descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software and the firmware or software may be configured to include the modules, procedures, or functions. Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure may be included in the one or more processors 102 and 202 or stored in the one or more memories 104 and 204 so as to be driven by the one or more processors 102 and 202. The descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software in the form of code, commands, and / or a set of commands.

[0092] The one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and / or commands. The one or more memories 104 and 204 may be configured by read-only memories (ROMs), random access memories (RAMs), electrically erasable programmable read-only memories (EPROMs), flash memories, hard drives, registers, cash memories, computer-readable storage media, and / or combinations thereof. The one or more memories 104 and 204 may be located at the interior and / or exterior of the one or more processors 102 and 202. The one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 through various technologies such as wired or wireless connection.

[0093] The one or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels, mentioned in the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure, to one or more other devices. The one or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels, mentioned in the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure, from one or more other devices. For example, the one or more transceivers 106 and 206 may be connected to the one or more processors 102 and 202 and transmit and receive radio signals. For example, the one or more processors 102 and 202 may perform control so that the one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. The one or more processors 102 and 202 may perform control so that the one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices.

[0094] The one or more transceivers 106 and 206 may be connected to the one or more antennas 108 and 208 and the 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, procedures, suggestions, methods and / or operational flowcharts disclosed in the present disclosure, through the one or more antennas 108 and 208. In the present disclosure, the one or more antennas 108 and 208 may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports).

[0095] The one or more transceivers 106 and 206 may convert received user data, control information, radio signals / channels, etc., from RF band signals into baseband signals in order to process received user data, control information, radio signals / channels, etc., using the one or more processors 102 and 202. The one or more transceivers 106 and 206 may convert the user data, control information, radio signals / channels, etc., processed using the one or more processors 102 and 202 from the base band signals into the RF band signals. To this end, the one or more transceivers 106 and 206 may include (analog) oscillators and / or filters. For example, the one or more transceivers 106 and 206 can up-convert OFDM baseband signals to OFDM signals by their (analog) oscillators and / or filters under the control of the one or more processors 102 and 202 and transmit the up-converted OFDM signals at the carrier frequency. The one or more transceivers 106 and 206 may receive OFDM signals at a carrier frequency and down-convert the OFDM signals into OFDM baseband signals by their (analog) oscillators and / or filters under the control of the one or more processors 102 and 202.

[0096] In the implementations of the present disclosure, a UE may operate as a transmitting device in uplink (UL) and as a receiving device in downlink (DL). In the implementations of the present disclosure, a BS may operate as a receiving device in UL and as a transmitting device in DL. Hereinafter, for convenience of description, it is mainly assumed that the first wireless device 100 acts as the UE, and the second wireless device 200 acts as the BS. For example, the processor(s) 102 connected to, mounted on or launched in the first wireless device 100 may be configured to perform the UE behavior according to an implementation of the present disclosure or control the transceiver(s) 106 to perform the UE behavior according to an implementation of the present disclosure. The processor(s) 202 connected to, mounted on or launched in the second wireless device 200 may be configured to perform the BS behavior according to an implementation of the present disclosure or control the transceiver(s) 206 to perform the BS behavior according to an implementation of the present disclosure.

[0097] In the present disclosure, a BS is also referred to as a node B (NB), an eNode B (eNB), or a gNB.

[0098] FIG. 3 shows an example of a wireless device to which implementations of the present disclosure is applied.

[0099] The wireless device may be implemented in various forms according to a use-case / service (refer to FIG. 1).

[0100] Referring to FIG. 3, wireless devices 100 and 200 may correspond to the wireless devices 100 and 200 of FIG. 2 and may be configured by various elements, components, units / portions, 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 additional components 140. The communication unit 110 may include a communication circuit 112 and transceiver(s) 114. For example, the communication circuit 112 may include the one or more processors 102 and 202 of FIG. 2 and / or the one or more memories 104 and 204 of FIG. 2. For example, the transceiver(s) 114 may include the one or more transceivers 106 and 206 of FIG. 2 and / or the one or more antennas 108 and 208 of FIG. 2. The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional components 140 and controls overall operation of each of the wireless devices 100 and 200. For example, the control unit 120 may control an electric / mechanical operation of each of the wireless devices 100 and 200 based on programs / code / commands / information stored in the memory unit 130. The control unit 120 may transmit the information stored in the memory unit 130 to the exterior (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface or store, in the memory unit 130, information received through the wireless / wired interface from the exterior (e.g., other communication devices) via the communication unit 110.

[0101] The additional components 140 may be variously configured according to types of the wireless devices 100 and 200. For example, the additional components 140 may include at least one of a power unit / battery, input / output (I / O) unit (e.g., audio I / O port, video I / O port), a driving unit, and a computing unit. The wireless devices 100 and 200 may be implemented in the form of, without being limited to, the robot (100a of FIG. 1), the vehicles (100b-1 and 100b-2 of FIG. 1), the XR device (100c of FIG. 1), the hand-held device (100d of FIG. 1), the home appliance (100e of FIG. 1), the IoT device (100f of FIG. 1), a digital broadcast terminal, a hologram device, a public safety device, an MTC device, a medicine device, a FinTech device (or a finance device), a security device, a climate / environment device, the AI server / device (400 of FIG. 1), the BSs (200 of FIG. 1), a network node, etc. The wireless devices 100 and 200 may be used in a mobile or fixed place according to a use-example / service.

[0102] In FIG. 3, the entirety of the various elements, components, units / portions, and / or modules in the wireless devices 100 and 200 may be connected to each other through a wired interface or at least a part thereof may be wirelessly connected through the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be connected by wire and the control unit 120 and first units (e.g., 130 and 140) may be wirelessly connected through the communication unit 110. Each element, component, unit / portion, and / or module within the wireless devices 100 and 200 may further include one or more elements. For example, the control unit 120 may be configured by a set of one or more processors. As an example, the control unit 120 may be configured by a set of a communication control processor, an application processor (AP), an electronic control unit (ECU), a graphical processing unit, and a memory control processor. As another example, the memory unit 130 may be configured by a RAM, a DRAM, a ROM, a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0103] <Operating bands of NR>.

[0104] The operating bands in NR are as follows

[0105] The operating bands in Table 3 below are the refarmed operating bands from the operating bands of LTE / LTE-A. This is referred to as the FR1 band.

[0106] NR operating bandsUplink (UL) operating bandDownlink(DL) operating bandDuplex ModeFUL_low- FUL_highFDL_low- FDL_highn11920 MHz - 1980 MHz2110 MHz - 2170 MHzFDDn21850 MHz - 1910 MHz1930 MHz - 1990 MHzFDDn31710 MHz - 1785 MHz1805 MHz - 1880 MHzFDDn5824 MHz - 849 MHz869 MHz - 894 MHzFDDn72500 MHz - 2570 MHz2620 MHz - 2690 MHzFDDn8880 MHz - 915 MHz925 MHz - 960 MHzFDDn12699 MHz - 716 MHz729 MHz - 746 MHzFDDn20832 MHz - 862 MHz791 MHz - 821 MHzFDDn251850 MHz - 1915 MHz1930 MHz - 1995 MHzFDDn28703 MHz - 748 MHz758 MHz - 803 MHzFDDn342010 MHz - 2025 MHz2010 MHz - 2025 MHzTDDn382570 MHz - 2620 MHz2570 MHz - 2620 MHzTDDn391880 MHz - 1920 MHz1880 MHz - 1920 MHzTDDn402300 MHz - 2400 MHz2300 MHz - 2400 MHzTDDn412496 MHz - 2690 MHz2496 MHz - 2690 MHzTDDn501432 MHz - 1517 MHz1432 MHz - 1517 MHzTDD1n511427 MHz - 1432 MHz1427 MHz - 1432 MHzTDDn661710 MHz - 1780 MHz2110 MHz - 2200 MHzFDDn701695 MHz - 1710 MHz1995 MHz - 2020 MHzFDDn71663 MHz - 698 MHz617 MHz - 652 MHzFDDn741427 MHz - 1470 MHz1475 MHz - 1518 MHzFDDn75N / A1432 MHz - 1517 MHzSDLn76N / A1427 MHz - 1432 MHzSDLn773300 MHz - 4200 MHz3300 MHz - 4200 MHzTDDn783300 MHz - 3800 MHz3300 MHz - 3800 MHzTDDn794400 MHz - 5000 MHz4400 MHz - 5000 MHzTDDn801710 MHz - 1785 MHzN / ASULn81880 MHz - 915 MHzN / ASULn82832 MHz - 862 MHzN / ASULn83703 MHz - 748 MHzN / ASULn841920 MHz - 1980 MHzN / ASULn861710 MHz - 1780 MHzN / ASUL

[0107] The table below shows the NR operating band defined at high frequencies. This is called the FR2 band.

[0108] NR Operating bandUplink (UL) operating bandDownlink(DL) operating bandDuplex ModeFUL_low- FUL_highFDL_low- FDL_highn25726500 MHz - 29500 MHz26500 MHz - 29500 MHzTDDn25824250 MHz - 27500 MHz24250 MHz - 27500 MHzTDDn25937000 MHz - 40000 MHz37000 MHz - 40000 MHzTDDn26037000 MHz - 40000 MHz37000 MHz - 40000 MHzFDDn26127500 MHz - 28350 MHz27500 MHz - 28350 MHzFDD

[0109] <6G System General>

[0110] A 6G (wireless communication) system has purposes such as (i) very high data rate per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) decrease in energy consumption of battery-free IoT devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capacity. The vision of the 6G system may include four aspects such as "intelligent connectivity", "deep connectivity", "holographic connectivity" and "ubiquitous connectivity", and the 6G system may satisfy the requirements shown in Table 4 below. That is, Table 4 shows the requirements of the 6G system.

[0111] Per device peak data rate1 TbpsE2E latency1 msMaximum spectral efficiency100bps / HzMobility supportUp to 1000km / hrSatellite integrationFullyAIFullyAutonomous vehicleFullyXRFullyHaptic CommunicationFully

[0112] The 6G system may have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), massive machine type communications (mMTC), AI integrated communication, tactile Internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion and enhanced data security.

[0113] FIG. 4 is a diagram showing an example of a communication structure that can be provided in a 6G system.

[0114] The 6G system will have 50 times higher simultaneous wireless communication connectivity than a 5G wireless communication system. URLLC, which is the key feature of 5G, will become more important technology by providing end-to-end latency less than 1 ms in 6G communication. At this time, the 6G system may have much better volumetric spectrum efficiency unlike frequently used domain spectrum efficiency. The 6G system may provide advanced battery technology for energy harvesting and very long battery life and thus mobile devices may not need to be separately charged in the 6G system. In addition, in 6G, new network characteristics may be as follows.

[0115] - Satellites integrated network: To provide a global mobile group, 6G will be integrated with satellite. Integrating terrestrial waves, satellites and public networks as one wireless communication system may be very important for 6G.

[0116] - Connected intelligence: Unlike the wireless communication systems of previous generations, 6G is innovative and wireless evolution may be updated from "connected things" to "connected intelligence". AI may be applied in each step (or each signal processing procedure which will be described below) of a communication procedure.

[0117] - Seamless integration of wireless information and energy transfer: A 6G wireless network may transfer power in order to charge the batteries of devices such as smartphones and sensors. Therefore, wireless information and energy transfer (WIET) will be integrated.

[0118] - Ubiquitous super 3-dimemtion connectivity: Access to networks and core network functions of drones and very low earth orbit satellites will establish super 3D connection in 6G ubiquitous.

[0119] In the new network characteristics of 6G, several general requirements may be as follows.

[0120] - Small cell networks: The idea of a small cell network was introduced in order to improve received signal quality as a result of throughput, energy efficiency and spectrum efficiency improvement in a cellular system. As a result, the small cell network is an essential feature for 5G and beyond 5G (5GB) communication systems. Accordingly, the 6G communication system also employs the characteristics of the small cell network.

[0121] - Ultra-dense heterogeneous network: Ultra-dense heterogeneous networks will be another important characteristic of the 6G communication system. A multi-tier network composed of heterogeneous networks improves overall QoS and reduces costs.

[0122] - High-capacity backhaul: Backhaul connection is characterized by a high-capacity backhaul network in order to support high-capacity traffic. A high-speed optical fiber and free space optical (FSO) system may be a possible solution for this problem.

[0123] - Radar technology integrated with mobile technology: High-precision localization (or location-based service) through communication is one of the functions of the 6G wireless communication system. Accordingly, the radar system will be integrated with the 6G network.

[0124] - Softwarization and virtualization: Softwarization and virtualization are two important functions which are the bases of a design process in a 5GB network in order to ensure flexibility, reconfigurability and programmability.

[0125] <Core implementation technology of 6G system>

[0126] Artificial Intelligence

[0127] Technology which is most important in the 6G system and will be newly introduced is AI. AI was not involved in the 4G system. A 5G system will support partial or very limited AI. However, the 6G system will support AI for full automation. Advance in machine learning will create a more intelligent network for real-time communication in 6G. When AI is introduced to communication, real-time data transmission may be simplified and improved. AI may determine a method of performing complicated target tasks using countless analysis. That is, AI may increase efficiency and reduce processing delay.

[0128] Time-consuming tasks such as handover, network selection or resource scheduling may be immediately performed by using AI. AI may play an important role even in M2M, machine-to-human and human-to-machine communication. In addition, AI may be rapid communication in a brain computer interface (BCI). An AI based communication system may be supported by meta materials, intelligent structures, intelligent networks, intelligent devices, intelligent recognition radios, self-maintaining wireless networks and machine learning.

[0129] Recently, attempts have been made to integrate AI with a wireless communication system in the application layer or the network layer, but deep learning have been focused on the wireless resource management and allocation field. However, such studies are gradually developed to the MAC layer and the physical layer, and, particularly, attempts to combine deep learning in the physical layer with wireless transmission are emerging. AI-based physical layer transmission means applying a signal processing and communication mechanism based on an AI driver rather than a traditional communication framework in a fundamental signal processing and communication mechanism. For example, channel coding and decoding based on deep learning, signal estimation and detection based on deep learning, multiple input multiple output (MIMO) mechanisms based on deep learning, resource scheduling and allocation based on AI, etc. may be included.

[0130] Machine learning may be used for channel estimation and channel tracking and may be used for power allocation, interference cancellation, etc. in the physical layer of DL. In addition, machine learning may be used for antenna selection, power control, symbol detection, etc. in the MIMO system.

[0131] Machine learning refers to a series of operations to train a machine in order to create a machine which can perform tasks which cannot be performed or are difficult to be performed by people. Machine learning requires data and learning models. In machine learning, data learning methods may be roughly divided into three methods, that is, supervised learning, unsupervised learning and reinforcement learning.

[0132] Neural network learning is to minimize output error. Neural network learning refers to a process of repeatedly inputting training data to a neural network, calculating the error of the output and target of the neural network for the training data, backpropagating the error of the neural network from the output layer of the neural network to an input layer in order to reduce the error and updating the weight of each node of the neural network.

[0133] Supervised learning may use training data labeled with a correct answer and the unsupervised learning may use training data which is not labeled with a correct answer. That is, for example, in case of supervised learning for data classification, training data may be labeled with a category. The labeled training data may be input to the neural network, and the output (category) of the neural network may be compared with the label of the training data, thereby calculating the error. The calculated error is backpropagated from the neural network backward (that is, from the output layer to the input layer), and the connection weight of each node of each layer of the neural network may be updated according to backpropagation. Change in updated connection weight of each node may be determined according to the learning rate. Calculation of the neural network for input data and backpropagation of the error may configure a learning cycle (epoch). The learning data is differently applicable according to the number of repetitions of the learning cycle of the neural network. For example, in the early phase of learning of the neural network, a high learning rate may be used to increase efficiency such that the neural network rapidly ensures a certain level of performance and, in the late phase of learning, a low learning rate may be used to increase accuracy.

[0134] The learning method may vary according to the feature of data. For example, for the purpose of accurately predicting data transmitted from a transmitter in a receiver in a communication system, learning may be performed using supervised learning rather than unsupervised learning or reinforcement learning.

[0135] The learning model corresponds to the human brain and may be regarded as the most basic linear model. However, a paradigm of machine learning using a neural network structure having high complexity, such as artificial neural networks, as a learning model is referred to as deep learning.

[0136] Neural network cores used as a learning method may roughly include a deep neural network (DNN) method, a convolutional deep neural network (CNN) method, a recurrent Boltzmman machine (RNN) method and a spiking neural network (SNN). Such a learning model is applicable.

[0137] THz (Terahertz) Communication

[0138] A data rate may increase by increasing bandwidth. This may be performed by using sub-TH communication with wide bandwidth and applying advanced massive MIMO technology. THz waves which are known as sub-millimeter radiation, generally indicates a frequency band between 0.1 THz and 10 THz with a corresponding wavelength in a range of 0.03 mm to 3 mm. A band range of 100 GHz to 300 GHz (sub THz band) is regarded as a main part of the THz band for cellular communication. When the sub-THz band is added to the mmWave band, the 6G cellular communication capacity increases. 300 GHz to 3 THz of the defined THz band is in a far infrared (IR) frequency band. A band of 300 GHz to 3 THz is a part of an optical band but is at the border of the optical band and is just behind an RF band. Accordingly, the band of 300 GHz to 3 THz has similarity with RF.

[0139] FIG. 5 shows an example of an electromagnetic spectrum.

[0140] The main characteristics of THz communication include (i) bandwidth widely available to support a very high data rate and (ii) high path loss occurring at a high frequency (a high directional antenna is indispensable). A narrow beam width generated in the high directional antenna reduces interference. The small wavelength of a THz signal allows a larger number of antenna elements to be integrated with a device and BS operating in this band. Therefore, an advanced adaptive arrangement technology capable of overcoming a range limitation may be used.

[0141] Large-scale MIMO

[0142] One of core technologies for improving spectrum efficiency is MIMO technology. When MIMO technology is improved, spectrum efficiency is also improved. Accordingly, massive MIMO technology will be important in the 6G system. Since MIMO technology uses multiple paths, multiplexing technology and beam generation and management technology suitable for the THz band should be significantly considered such that data signals are transmitted through one or more paths.

[0143] Hologram Beamforming

[0144] Beamforming is a signal processing procedure that adjusts an antenna array to transmit radio signals in a specific direction. This is a subset of smart antennas or advanced antenna systems. Beamforming technology has several advantages, such as high signal-to-noise ratio, interference prevention and rejection, and high network efficiency. Hologram Beamforming (HBF) is a new beamforming method that differs significantly from MIMO systems because this uses a software-defined antenna. HBF will be a very effective approach for efficient and flexible transmission and reception of signals in multi-antenna communication devices in 6G.

[0145] Optical wireless technology

[0146] Optical wireless communication (OWC) is a form of optical communication that uses visible light, infrared light (IR), or ultraviolet light (UV) to carry signals. OWC operating in the visible light band (e.g., 390 to 750 nm) is commonly referred to as visible light communication (VLC). VLC implementations can utilize light-emitting diodes (LEDs). VLC can be used in a variety of applications, including wireless local area networks, wireless personal area networks, and vehicular networks.

[0147] VLC has several advantages over RF-based technologies. First, the spectrum occupied by VLC is free / unlicensed and can provide extensive bandwidth (THz-level bandwidth). Second, VLC rarely causes significant interference to other electromagnetic devices; therefore, VLC can be applied in sensitive electromagnetic interference applications such as aircraft and hospitals. Third, VLC has strengths in communication security and privacy. The transmission medium of VLC-based networks, namely visible light, cannot pass through walls and other opaque obstacles. Therefore, the transmission range of VLC can be limited to indoors, which can protect users' privacy and sensitive information. Fourth, VLC can use any light source as a base station, eliminating the need for expensive base stations.

[0148] Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space, such as air, outer space, and vacuum, to wirelessly transmit data for telecommunications or computer networking. FSO can be used as a point-to-point OWC system on the ground. FSO can operate in the near-infrared frequency (750-1600 nm). Laser transmitters may be used in FSO implementations, and FSO can provide high data rates (e.g., 10 Gbit / s), providing a potential solution to backhaul bottlenecks.

[0149] These OWC technologies are planned for 6G communications in addition to RF-based communications for all possible device-to-access networks. These networks will access network-to-backhaul / fronthaul network connections. OWC technology has already been in use since 4G communication systems, but will be more widely used to meet the needs of 6G communication systems. OWC technologies such as light fidelity, visible light communication, optical camera communication, and FSO communication based on optical bands are already well-known technologies. Communication based on optical wireless technology can provide extremely high data rates, low latency, and secure communication.

[0150] Light Detection And Ranging (LiDAR) is also based on the optical band and can be utilized in 6G communications for ultra-high resolution 3D mapping. LiDAR is a remote sensing method that uses near-infrared, visible, and ultraviolet light to illuminate an object, and the reflected light is detected by a light sensor to measure distance. LiDAR can be used for fully automated driving of cars.

[0151] FSO Backhaul Network

[0152] The characteristics of the transmitter and receiver of the FSO system are similar to those of an optical fiber network. Accordingly, data transmission of the FSO system similar to that of the optical fiber system. Accordingly, FSO may be a good technology for providing backhaul connection in the 6G system along with the optical fiber network. When FSO is used, very long-distance communication is possible even at a distance of 10,000 km or more. FSO supports mass backhaul connections for remote and non-remote areas such as sea, space, underwater and isolated islands. FSO also supports cellular base station connections.

[0153] Non-Terrestrial Networks (NTN)

[0154] The 6G system will integrate terrestrial and aerial networks to support vertically expanding user communications. 3D BS will be delivered via low-orbit satellites and UAVs. Adding a new dimension in terms of altitude and associated degrees of freedom makes 3D connectivity quite different from traditional 2D networks. NR considers Non-Terrestrial Networks (NTNs) as one way to accomplish this. An NTN is a network or network segment that uses RF resources aboard a satellite (or UAS platform). There are two common scenarios for NTNs that provide access to user equipment: transparent payloads and regenerative payloads. The following are the basic elements of an NTN.

[0155] - One or more sat-gateways that connect the NTN to the public data network.

[0156] - GEO satellites are fed by one or several satellite gateways deployed across the satellite target range (e.g., regional or continental coverage). We assume that the UEs in a cell are served by only one sat-gateway.

[0157] - Non-GEO satellites that are continuously serviced by one or multiple satellite gateways at a time. The system ensures service and feeder link continuity between successively serviced satellite gateways with a time duration sufficient to allow for mobility anchoring and handover.

[0158] - The feeder link or radio link between the satellite gateway and the satellite (or UAS platform).

[0159] - The service link or radio link between the user equipment and the satellite (or UAS platform).

[0160] - A satellite (or UAS platform) that can implement transparent or regenerative (with onboard processing) payloads. Satellite (or UAS platform) generated beams typically produce multiple beams for a given service area, depending on the field of view. The footprint of the beam is typically elliptical. The field of view of the satellite (or UAS platform) depends on the onboard antenna diagram and the minimum angle of attack.

[0161] - Transparent payload: Radio frequency filtering, frequency conversion, and amplification, so the waveform signal repeated by the payload is unchanged.

[0162] - Regenerative payload: radio frequency filtering, frequency conversion and amplification, demodulation / decryption, switching and / or routing, and coding / modulation. This is effectively the same as having all or part of the base station functions (e.g., gNB) on board a satellite (or UAS platform).

[0163] - For satellite deployments, optionally an inter-satellite link (ISL). This requires a regenerative payload on the satellite. ISLs can operate at RF frequencies or in the optical band.

[0164] - User equipment is served by satellites (or UAS platforms) within the targeted coverage area.

[0165] Typically, GEO satellites and UAS are used to provide continental, regional, or local services.

[0166] Typically, constellations in LEO and MEO are used to provide coverage in both the Northern and Southern Hemispheres. In some cases, constellations can also provide global coverage, including polar regions. The latter requires proper orbital inclination, sufficient beams generated, and links between satellites.

[0167] Quantum Communication

[0168] Quantum communication is a next-generation communication technology that can overcome the limitations of conventional communication such as security and high-speed computation by applying quantum mechanical properties to the field of information and communication. Quantum communication provides a means of generating, transmitting, processing, and storing information that cannot be expressed in the form of 0s and 1s according to the binary bit information used in existing communication technologies. In conventional communication technologies, wavelengths or amplitudes are used to transmit information between the transmitting and receiving ends, but in quantum communication, photons, the smallest unit of light, are used to transmit information between the transmitting and receiving ends. In particular, in the case of quantum communication, quantum uncertainty and quantum irreversibility can be used for the polarization or phase difference of photons (light), so quantum communication has the characteristic of being able to communicate with perfect security. In addition, quantum communication can also enable ultra-high-speed communication using quantum entanglement under certain conditions.

[0169] Cell-free Communication

[0170] Tight integration of multiple frequencies and heterogeneous communication technologies is critical in 6G systems. As a result, users can seamlessly move from one network to another without having to create any manual configurations on their devices. The best network is automatically selected from the available communication technologies. This will break the limitations of the cell concept in wireless communication. Currently, user movement from one cell to other causes too many handovers in dense networks, resulting in handover failures, handover delays, data loss, and ping-pong effects. 6G cell-free communication will overcome all this and provide better QoS.

[0171] Cell-free communication is defined as "a system in which a large number of geographically distributed antennas (APs) cooperatively serve a small number of terminals using the same time / frequency resources with the help of a fronthaul network and a CPU". A single terminal is served by a set of multiple APs, which is called an AP cluster. There are several ways to form AP clusters, among which the method of configuring AP clusters with APs that can significantly contribute to improving the reception performance of the terminal is called the terminal-centered clustering method, and when using this method, the configuration is dynamically updated as the terminal moves. By adopting this device-centric AP clustering technique, the device is always at the center of the AP cluster and is therefore free from inter-cluster interference that can occur when the device is located at the boundary of the AP cluster. This cell-free communication will be achieved through multi-connectivity and multi-tier hybrid technologies and different heterogeneous radios in the device.

[0172] Integration of Wireless Information and Energy Transfer (WIET)

[0173] WIET uses the same field and wave as a wireless communication system. In particular, a sensor and a smartphone will be charged using wireless power transfer during communication. WIET is a promising technology for extending the life of battery charging wireless systems. Therefore, devices without batteries will be supported in 6G communication.

[0174] Integration of Wireless Communication and Sensing

[0175] An autonomous wireless network is a function for continuously detecting a dynamically changing environment state and exchanging information between different nodes. In 6G, sensing will be tightly integrated with communication to support autonomous systems.

[0176] Integrated Access and Backhaul Network

[0177] In 6G, the density of access networks will be enormous. Each access network is connected by optical fiber and backhaul connection such as FSO network. To cope with a very large number of access networks, there will be a tight integration between the access and backhaul networks.

[0178] Big Data Analysis

[0179] Big data analysis is a complex process for analyzing various large data sets or big data. This process finds information such as hidden data, unknown correlations, and customer disposition to ensure complete data management. Big data is collected from various sources such as video, social networks, images and sensors. This technology is widely used for processing massive data in the 6G system.

[0180] Reconfigurable Intelligent Surface

[0181] There is a large body of research that considers the radio environment as a variable to be optimized along with the transmitter and receiver. The radio environment created by this approach is referred to as a Smart Radio Environment (SRE) or Intelligent Radio Environment (IRE) to highlight its fundamental differences from past design and optimization criteria. Various terms have been proposed for the reconfigurable intelligent antenna (or intelligent reconfigurable antenna technology) technology that enables SRE, including Reconfigurable Metasurfaces, Smart Large Intelligent Surfaces (SLIS), Large Intelligent Surfaces (LIS), Reconfigurable Intelligent Surface (RIS), and Intelligent Reflecting Surface (IRS).

[0182] In the case of THz band signals, there are many shadowed areas caused by obstacles due to the strong straightness of the signal, and RIS technology is important to expand the communication area by installing RIS near these shadowed areas, strengthening communication stability and enabling additional value-added services. RIS is an artificial surface made of electromagnetic materials that can alter the propagation of incoming and outgoing radio waves. While RIS can be seen as an extension of massive MIMO, it has a different array structure and operating mechanism than massive MIMO. RIS also has the advantage of lower power consumption because it operates as a reconfigurable reflector with passive elements, meaning it only passively reflects the signal without using an active RF chain. In addition, each of the passive reflectors in the RIS must independently adjust the phase shift of the incident signal, which can be advantageous for wireless communication channels. By properly adjusting the phase shift through the RIS controller, the reflected signal can be gathered at the target receiver to boost the received signal power.

[0183] In addition to reflecting radio signals, there are also RISs that can adjust transmission and refraction properties, and these RISs are mainly used for O2I (Outdoor to Indoor). Recently, STAR-RIS (Simultaneous Transmission and Reflection RIS), which provides transmission while reflecting, has also been actively researched.

[0184] Metaverse

[0185] Metaverse is a portmanteau of the words "meta" meaning virtual, transcendent, and "universe" meaning space. Generally speaking, the metaverse is a three-dimensional virtual space where the same social and economic activities as in the real world are commonplace.

[0186] Extended Reality (XR), a key technology enabling the Metaverse, is the fusion of the virtual and the real, which can extend the experience of reality and provide a unique sense of immersion. The high bandwidth and low latency of 6G networks will enable users to experience more immersive virtual reality (VR) and augmented reality (AR) experiences.

[0187] Autonomous Driving, Self-driving

[0188] For perfect autonomous driving, vehicles must communicate with each other to inform each other of dangerous situations, or with infrastructure such as parking lots and traffic lights to check information such as the location of parking information and signal change times. Vehicle-to-Everything (V2X), a key element in building an autonomous driving infrastructure, is a technology that enables vehicles to communicate and share information with various elements on the road, such as vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I), for autonomous driving.

[0189] In order to maximize the performance of autonomous driving and ensure high safety, fast transmission speeds and low latency technologies are essential. In addition, in the future, autonomous driving will go beyond delivering warnings and guidance messages to the driver to actively intervene in vehicle operation and directly control the vehicle in dangerous situations, and the amount of information that needs to be transmitted and received will be enormous, so 6G is expected to maximize autonomous driving with faster transmission speeds and lower latency than 5G.

[0190] Unmanned Aerial Vehicle (UAV)

[0191] An unmanned aerial vehicle (UAV) or drone will be an important factor in 6G wireless communication. In most cases, a high-speed data wireless connection is provided using UAV technology. A base station entity is installed in the UAV to provide cellular connectivity. UAVs have certain features, which are not found in fixed base station infrastructures, such as easy deployment, strong line-of-sight links, and mobility-controlled degrees of freedom. During emergencies such as natural disasters, the deployment of terrestrial telecommunications infrastructure is not economically feasible and sometimes services cannot be provided in volatile environments. The UAV can easily handle this situation. The UAV will be a new paradigm in the field of wireless communications. This technology facilitates the three basic requirements of wireless networks, such as eMBB, URLLC and mMTC. The UAV can also serve a number of purposes, such as network connectivity improvement, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, and accident monitoring. Therefore, UAV technology is recognized as one of the most important technologies for 6G communication.

[0192] Block-chain

[0193] A blockchain will be important technology for managing large amounts of data in future communication systems. The blockchain is a form of distributed ledger technology, and distributed ledger is a database distributed across numerous nodes or computing devices. Each node duplicates and stores the same copy of the ledger. The blockchain is managed through a peer-to-peer (P2P) network. This may exist without being managed by a centralized institution or server. Blockchain data is collected together and organized into blocks. The blocks are connected to each other and protected using encryption. The blockchain completely complements large-scale IoT through improved interoperability, security, privacy, stability and scalability. Accordingly, the blockchain technology provides several functions such as interoperability between devices, high-capacity data traceability, autonomous interaction of different IoT systems, and large-scale connection stability of 6G communication systems.

[0194] <Random Access Channel (RACH) Procedure>

[0195] FIGS. 6a through 6e shows an example of RACH procedures applicable to an embodiment of the present disclosure.

[0196] Referring to FIGS. 6a through 6e, a RACH procedure is described, according to one embodiment of the present disclosure. The embodiments of Figures 6a through 6e may be combined with various embodiments of the present disclosure.

[0197] In one embodiment of the disclosure, where RF requirements (e.g., Tx RF performance requirements and / or Rx RF performance requirements) are described, the UE may satisfy those RF requirements. For example, a UE may be tested to satisfy RF requirements (e.g., Tx RF performance requirements and / or Rx Rf performance requirements) according to one embodiment of the disclosure. In one embodiment of the disclosure, a UE that meets these RF requirements may perform the RACH procedure. When the UE transmits messages, data, signaling, etc. to the gNB, the UE satisfies the Tx RF performance requirements described in the first embodiment of this specification. When the UE receives messages, data, signaling, etc. from the gNB, the UE satisfies the Rx RF performance requirements described in the first embodiment of this specification.

[0198] To connect the UE to the 5G network, the UE and the 5G network must synchronize in the uplink and downlink. Downlink synchronization is performed when the UE successfully decodes the SSB transmitted by the gNB. To establish the uplink synchronization and RRC connection, the UE shall perform the RACH random access procedure.

[0199] Two types of random access procedures are supported. The two types of random access procedures include a four-stage Random Access (RA) type using MSG1 and a two-stage RA type using MSGA.

[0200] The two types of RA procedures can support Contention Based Random Access (CBRA) and Contention Free Random Access (CFRA), as shown in Figure 6a through Figure 6e below, respectively. The UE may select the random access type at the beginning of the random access procedure, depending on the network configuratoin.

[0201] Referring to Figure 6a and Figure 6c, a four-stage RA type using MSG1 is illustrated.

[0202] Step 4 The MSG1 of RA type contains the preamble of the PRACH. The UE transmits the MSG1. After the UE sends the MSG1, the UE monitors the network for a response within the set window.

[0203] For CBRA according to the example of FIG. 6a, when the UE receives a random access response (MSG2) from the gNB, the UE may transmit MSG3 using the UL grant scheduled by the response message. The UE may then monitor the contention resolution. If contention resolution is not successful after the MSG3 (re)transmission, the UE shall perform the MSG1 transmission again.

[0204] For CFRA according to the example in FIG. 6c, a dedicated preamble for MSG1 transmission is allocated by the network. The gNB sends the RA preamble assignment to the UE. The UE transmits an MSG1 containing the random access preamble to the gNB. Upon receiving the random access response from the network, the UE terminates the random access procedure.

[0205] Referring to FIGS. 6b, 6d, and 6e, a two-stage RA type is described. The MSGA of the two-stage RA type includes a random access preamble on the PRACH and a PUSCH payload. After the UE transmits the MSGA, the UE monitors the response from the network within a set window.

[0206] For CBRA according to the example of FIG. 6b, after the UE receives the network response (e.g., MSGB), if the contention resolution is successful, the UE terminates the random access procedure. If the fallback indication is received within the MSGB, the UE performs the MSG3 transmission using the UL grant scheduled in the fallback indication and monitors the contention resolution, as shown in Figure 6e. If contention resolution is not successful after the MSG3 (re)transmission, the UE shall perform the MSGA transmission again.

[0207] In the case of CFRA according to the example of FIG. 6d, the UE may receive RA preamble allocation and PUSCH allocation from the gNB. Dedicated preamble and PUSCH resources may then be set up for MSGA transmission. The UE transmits the MSGA. When the UE receives a network response, the UE terminates the random access procedure.

[0208] If the random access procedure of the two-stage RA type is not completed after several MSGA transmissions, the UE may be set to switch to the CBRA of the four-stage RA type.

[0209] A User Equipment (UE) may transmit uplink signal or receive downlink signal based on E-UTRA NR Dual Connectivity (EN-DC).

[0210] However, in prior arts, a UE supporting high transmission power (e.g., power class 1.5) cannot perform communication based on EN-DC. In the prior art, a high power UE (e.g., a UE supporting power class 1.5) could not support EN-DC. This resulted in limited coverage for the high power UE.

[0211] To date, no EN-DC terminals have been defined that support Power Class 1.5. Power class 1.5 EN-DC terminals needs to be introduced to increase coverage. UE RF performance specifications for this need to be defined.

[0212] For example, the present disclosure discloses examples related to method for configuring the transmitted power(or transmission power) for Power Class 1.5 UE or Power Class 2 UE supporting inter-band EN-DC.

[0213] For example, Power Class 1.5 may mean that maximum output power of 29dBm is supported by a UE.

[0214] For example, Power Class 2 may mean that maximum output power of 26dBm is supported by a UE.

[0215] 3GPP TS 38.306 V18.0.0 S4.2 may be referred. For example, 4.2 UE Capability Parameters, 4.2.7 Physical layer parameters, 4.2.7.1 BandCombinationList parameters, 4.2.7.2 BandNR parameters may be reffered.

[0216] Definitions for parametersPerMFDD-TDDDIFFFR1-FR2DIFFbandListEach entry of the list should include at least one bandwidth class for UL or DL.BCYesN / AN / AbandNRDefines supported NR frequency band by NR frequency band number, as specified in TS 38.101-1 V18.4.0 and TS 38.101-2 V18.4.0.BandYesN / AN / Aca-ParametersEUTRAContains the EUTRA part of band combination parameters for a given (NG)EN-DC / NE-DC band combination.BCNoN / AN / Aca-ParametersNRContains the NR band combination parameters for a given (NG)EN-DC / NE-DC and / or NR CA band combination.BCNoN / AN / AfeatureSetCombinationIndicates the feature set that the UE supports on the NR and / or MR-DC band combination by FeatureSetCombinationId.BCN / AN / AN / ApowerClass, powerClass-v1610Indicates power class the UE supports when operating according to this band combination. If the field is absent, the UE supports the default power class. If this power class is higher than the power class that the UE supports on the individual bands of this band combination (ue-PowerClass in BandNR), the latter determines maximum TX power available in each band. The UE sets the power class parameter only in band combinations that are applicable as specified in TS 38.101-1 V18.4.0 and TS 38.101-3 V18.4.0. This capability is not applicable to IAB-MT.BCNoN / AFR1 onlypowerClassNRPart-r16Indicates NR part power class the UE supports when operating according to this band combination.This field only applies for MR-DC BCs containing only single CC or intra-band CA in NR side in this release.BCNoN / AFR1 only

[0217] Table 6 shows examples of parameters that may be included in BandCombinationList parameters

[0218] For reference, in tables of the present disclosure, FDD-TDD DIFF may mean differences between FDD and TDD. In tables of the present disclosure, FR1-FR2 DIFF may mean differences between FR1 and FR2.

[0219] Definitions for parametersPerMFDD-TDDDIFFFR1-FR2DIFFbandNRDefines supported NR frequency band by NR frequency band number, as specified in TS 38.101-1 V18.4.0, TS 38.101-2 V18.4.0, and TS 38.101-5 V18.4.0.BandYesN / AN / AmaxUplinkDutyCycle-PC2-FR1Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for uplink transmission to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is applicable for FR1 power class 2 UE and also applicable for FR1 power class 1.5 UE as specified in clause 6.2.1 of TS 38.101-1 V18.4.0. If the field and maxUplinkDutyCycle-PC1dot5-MPE-FR1-r16 are both absent, 50% shall be applied as the upper limit of the UL duty cycle for power class 2. Value n60 corresponds to 60%, value n70 corresponds to 70% and so on. This capability is not applicable to IAB-MT.BandNoN / AFR1 onlymaxUplinkDutyCycle-FR2Indicates the maximum percentage of symbols during 1s that can be scheduled for uplink transmission at the UE maximum transmission power, so as to ensure compliance with applicable electromagnetic power density exposure requirements provided by regulatory bodies. This field is applicable for all power classes UE in FR2 as specified in TS 38.101-2 V18.4.0. Value n15 corresponds to 15%, value n20 corresponds to 20% and so on. If the field is absent or the percentage of uplink symbols transmitted within any 1s evaluation period is larger than maxUplinkDutyCycle-FR2, the UE behaviour is specified in TS 38.101-2 V18.4.0. This capability is not applicable to IAB-MT.BandNoN / AFR2 onlymaxUplinkDutyCycle-PC1dot5-MPE-FR1-r16Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for uplink transmission to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is only applicable for FR1 power class 1.5 UE as specified in clause 6.2.1 of TS 38.101-1 V18.4.0. If the field and maxUplinkDutyCycle-PC2-FR1 are both absent, 25% shall be applied as the upper limit of the UL duty cycle for power class 1.5.BandNoN / AFR1 onlytxDiversity-r16Indicates whether the UE supports transparent Tx diversity requirements as specified in the suffix G clauses of TS 38.101-1 V18.4.0 (see also clauses 4.2 and 4.3 of TS 38.101-1 V18.4.0).BandNoN / AFR1 onlyue-PowerClass, ue-PowerClass-v1610, ue-PowerClass-v1700For FR1, if the UE supports the different UE power class than the default UE power class as defined in clause 6.2 of TS 38.101-1 V18.4.0, or in clause 6.2 of TS 38.101-5 V18.0.0, the UE shall report the supported UE power class in this field. For FR2, UE shall report the supported UE power class as defined in clause 6 and 7 of TS 38.101-2 V18.4.0 in this field. UE indicating support for pc6 supports the enhanced intra-NR RRM and demodulation processing requirements for FR2 to support high speed up to 350 km / h as specified in TS 38.133 V18.4.0. This capability is not applicable to IAB-MT. The power class pc7 is only applicable for RedCap UEs operation in FR2. This capability is not applicable for UEs indicating support of maxOutputPowerATG-r18.BandYesN / AN / A

[0220] Table 7 shows examples of parameters that may be included in 4.2.7.2 BandNR parameters of TS TS 38.306 V18.0.0.

[0221] For example, a UE may transmit capability information includingone or more information in 3GPP TS 38.306 V18.0.0 S4.2 to a base station.

[0222] For exmaple, 4.2.7.2 BandNR parameters may include information in table 8.

[0223] Definitions for parametersPerMFDD-TDDDIFFFR1-FR2DIFFbandNRDefines supported NR frequency band by NR frequency band number, as specified in TS 38.101-1 V18.4.0, TS 38.101-2 V18.4.0, and TS 38.101-5 V18.4.0.BandYesN / AN / AmaxUplinkDutyCycle-PC2-FR1Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for uplink transmission to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is applicable for FR1 power class 2 UE and also applicable for FR1 power class 1.5 UE as specified in clause 6.2.1 of TS 38.101-1 V18.4.0. If the field and maxUplinkDutyCycle-PC1dot5-MPE-FR1-r16 are both absent, 50% shall be applied as the upper limit of the UL duty cycle for power class 2. Value n60 corresponds to 60%, value n70 corresponds to 70% and so on. This capability is not applicable to IAB-MT.BandNoN / AFR1 onlymaxUplinkDutyCycle-FR2Indicates the maximum percentage of symbols during 1s that can be scheduled for uplink transmission at the UE maximum transmission power, so as to ensure compliance with applicable electromagnetic power density exposure requirements provided by regulatory bodies. This field is applicable for all power classes UE in FR2 as specified in TS 38.101-2 V18.4.0. Value n15 corresponds to 15%, value n20 corresponds to 20% and so on. If the field is absent or the percentage of uplink symbols transmitted within any 1s evaluation period is larger than maxUplinkDutyCycle-FR2, the UE behaviour is specified in TS 38.101-2 V18.4.0. This capability is not applicable to IAB-MT.BandNoN / AFR2 onlymaxUplinkDutyCycle-PC1dot5-MPE-FR1-r16Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for uplink transmission to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is only applicable for FR1 power class 1.5 UE as specified in clause 6.2.1 of TS 38.101-1 V18.4.0. If the field and maxUplinkDutyCycle-PC2-FR1 are both absent, 25% shall be applied as the upper limit of the UL duty cycle for power class 1.5.BandNoN / AFR1 onlytxDiversity-r16Indicates whether the UE supports transparent Tx diversity requirements as specified in the suffix G clauses of TS 38.101-1 V18.4.0 (see also clauses 4.2 and 4.3 of TS 38.101-1 V18.4.0).BandNoN / AFR1 onlyue-PowerClass, ue-PowerClass-v1610, ue-PowerClass-v1700For FR1, if the UE supports the different UE power class than the default UE power class as defined in clause 6.2 of TS 38.101-1 V18.4.0, or in clause 6.2 of TS 38.101-5 V18.4.0, the UE shall report the supported UE power class in this field. For FR2, UE shall report the supported UE power class as defined in clause 6 and 7 of TS 38.101-2 V18.4.0 in this field. UE indicating support for pc6 supports the enhanced intra-NR RRM and demodulation processing requirements for FR2 to support high speed up to 350 km / h as specified in TS 38.133 V18.4.0. This capability is not applicable to IAB-MT. The power class pc7 is only applicable for RedCap UEs operation in FR2. This capability is not applicable for UEs indicating support of maxOutputPowerATG-r18.BandYesN / AN / A

[0224] UE capability list may include examples in table 9.

[0225] Feature groupComponentsPerMFDD-TDDDIFFFR1-FR2DIFFSupport of ΔPPowerClass reporting mechanismSupport of ΔPPowerClass / ΔPPowerClass, CA / ΔPPowerClass,EN-DC / ΔPPowerClass, NR-DC reporting which is triggered upon uplink duty cycle exceedance or upon return to the power class after the duty cycle exceedance, as specified in TS 38.101-1 V18.4.0 and TS 38.101-3 V18.4.0.UENoN / AFR1 onlyPower boosting for DFT-s-OFDM pi / 2 BPSK and QPSK transmissions without modified spectrum flatness requirement(powerBoostRel18)1. Support of UE power boosting for DFT-s-OFDM pi / 2 BPSK and QPSK without modified spectrum flatness requirement for PC3 and PC2 MPR reduction, when applicable as defined in 6.2 of TS 38.101-1 V18.4.0. The power boosting is only enabled when signalled via RRC powerBoostPi2BPSKRel18 for BPSK and powerBoostQPSKRel18 for QPSKFSNoN / AFR1 onlyPower boosting for DFT-s-OFDM pi / 2 BPSK and QPSK transmissions with modified spectrum flatness requirement shaping(powerBoostTSRel18)1. Support of UE power boosting for DFT-s-OFDM pi / 2 BPSK and QPSK with modified spectrum flatness requirement for PC3 and PC2 MPR reduction, when applicable as defined in 6.2 of TS 38.101-1 V18.4.0. The power boosting is only enabled when signalled via RRC powerBoostPi2BPSKRel18 for BPSK and powerBoostQPSKRel18 for QPSKFSNoN / AFR1 only

[0226] Table 9 shows examples of Agreed UE capability list in R4-2403842.

[0227] The capability information may include CA-ParametersNR as shown in table 10.

[0228] Definitions for parametersPerMFDD-TDDDIFFFR1-FR2DIFFhigherPowerLimit-r17Indicates whether UE supports increase in maximum output power above the power class indication for inter-band UL CA and NR-DC band combinations as defined in clause 6.2A of TS 38.101-1 V18.4.0.BCNoN / AFR1 onlymaxUplinkDutyCycle-interBandCA-PC2-r17Indicates the maximum average percentage of symbols during a certain evaluation period that can be scheduled for uplink transmission so as to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. The average percentage of uplink symbols is specified in 6.2A.1.3 in TS 38.101-1 V18.4.0 and the capability applies to the CA combinations listed in Table 11. If the field is absent, UE shall work on power class 2 regardless of UL duty cycle and may use P-MPRc as defined in 6.2.4 in TS 38.101-1 V18.4.0 if necessary.Value n50 corresponds to 50%, value n60 corresponds to 60% and so on.NOTE: Specific targeted UL duty cycle percentage is not assumed if the field is absent.BCNoN / AFR1 only

[0229] Table 10 shows exmaples in CA-ParametersNR. 3GPP TS 38.306 V18.0.0 4.2.7.4 CA-ParametersNR may be referred.

[0230] The capability information may include one or more information of 3GPP TS 38.306 V18.0.0 S4.2.7.7 FeatureSetUplink parameters as shown in table 11.

[0231] Definitions for parametersPerMFDD-TDDDIFFFR1-FR2DIFFtxDiversity2Tx-r18Indicates whether the UE supports 2Tx Tx diversity for the band configured.This capability is applicable for both single band (non-CA) case and CA case.FSNoN / AFR1 onlytxDiversity4Tx-r18Indicates whether the UE supports Tx diversity for 4Tx for the band configured.This capability is applicable for both single band (non-CA) case and CA case.FSNoN / AFR1 onlytx-Support-UL-GapFR2-r17Indicates whether the UE supports UL transmission in FR2 bands within an FR2 UL gap when the FR2 UL gap is activated in inter-band UL CA. The UE which indicates support for tx-Support-UL-GapFR2-r17 shall also indicate support for ul-GapFR2-r17 in an FR2 band.FSNoNoFR2 onlyue-PowerClassPerBandPerBC-r17Indicates the UE power class per band per band combination.NOTE: Void.FSNoN / AFR1 onlyul-FullPwrMode-r16Indicates the UE support of UL full power transmission mode of fullpower as specified in clause 7.1 of TS 38.213 V18.1.0. If the UE indicates this capability the UE also indicates the support of codebook based PUSCH MIMO transmission using mimo-CB-PUSCH and the support of PUSCH codebook coherency subset using pusch-TransCoherence.FSNoN / AN / A

[0232] Table 11 shows examples of TS 38.306 V18.0.0 S4.2.7.7 FeatureSetUplink parameters.

[0233] 3GPP TS 38.306 V18.0.0 4.2.7.8 FeatureSetUplinkPerCC parameters may be referred.

[0234] Definitions for parametersPerMFDD-TDDDIFFFR1-FR2DIFFdualPA-ArchitectureFor an intra-band band combination, this field indicates the support of dual PAs. If absent in an intra-band band combination, the UE supports single PA for all the ULs in the intra-band band combination. For other band combinations, this field is not applicable.This capability applies to:- Intra-band (NG)EN-DC / NE-DC combination without additional inter-band NR and LTE CA component;- Intra-band (NG)EN-DC / NE-DC combination supporting both UL and DL intra-band (NG)EN-DC / NE-DC parts with additional inter-band NR / LTE CA component;- Inter-band (NG)EN-DC / NE-DC combination, where the frequency range of the E-UTRA band is a subset of the frequency range of the NR band (as specified in Table 5.5B.4.1-1 of TS 38.101-3 V18.4.0).If this capability is included in an "Intra-band (NG)EN-DC / NE-DC combination supporting both UL and DL intra-band (NG)EN-DC / NE-DC parts with additional inter-band NR / LTE CA component", this capability applies to the intra-band (NG)EN-DC / NE-DC BC part.BCNoN / AN / AdynamicPowerSharingENDCIndicates whether the UE supports dynamic (NG)EN-DC power sharing between NR FR1 carriers and the LTE carriers. If the UE supports this capability the UE supports the dynamic power sharing behaviour as specified in clause 7 of TS 38.213 V18.1.0. In this release of the specification, the UE supporting (NG)EN-DC shall set this field to supported.BCYesN / AFR1 onlyhigherPowerLimitMRDC-r17Indicates whether UE supports increase in maximum output power above the power class indication for inter-band UL (NG)EN-DC band combinations as defined in clause 6.2B of TS 38.101-3 V18.4.0.BCNoN / AFR1 onlymaxUplinkDutyCycle-interBandENDC-FDD-TDD-PC2-r16Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for NR uplink transmission and EUTRA FDD uplink transmission so as to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is only applicable for inter-band FDD+TDD EN-DC power class 2 UE as specified in TS 38.101-3 V18.4.0. This capability signalling comprises of maxUplinkDutyCycle-FDD-TDD-EN-DC1 and maxUplinkDutyCycle-FDD-TDD-EN-DC2 which indicate the maxUplinkDutyCycle capability of NR band corresponding to different LTE reference configurations as described in TS 38.101-3 V18.4.0 clause 6.2B.1.3. Value n30 corresponds to 30%, value n40 corresponds to 40% and so on.BCNoN / AFR1 onlymaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for NR uplink transmission under different EUTRA TDD uplink-downlink configurations so as to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is only applicable for inter-band TDD+TDD EN-DC power class 2 UE as specified in TS 38.101-3 V18.4.0. If the field is absent, 30% shall be applied to all EUTRA TDD uplink-downlink configurations. If eutra-TDD-Configx is absent, 30% shall be applied to the corresponding EUTRA TDD uplink-downlink configuration.Value n20 corresponds to 20%, value n40 corresponds to 40% and so on.BCNoTDD onlyFR1 onlysimultaneousRxTxInterBandENDCIndicates whether the UE supports simultaneous transmission and reception in TDD-TDD and TDD-FDD inter-band (NG)EN-DC / NE-DC. It is mandatory for certain TDD-FDD and TDD-TDD band combinations defined in TS 38.101-3 V18.4.0.This capability does not apply to the following components within TDD-TDD and TDD-FDD inter-band (NG)EN-DC / NE-DC combination:- Intra-band (NG)EN-DC / NE-DC component- Inter-band (NG)EN-DC / NE-DC component where the frequency range of the E-UTRA band is a subset of the frequency range of the NR band (as specified in Table 5.5B.4.1-1 of TS 38.101-3 V18.4.0).BCCYN / AN / AsimultaneousRxTxInterBandENDCPerBandPairIndicates whether the UE supports simultaneous transmission and reception in TDD-TDD and TDD-FDD inter-band (NG)EN-DC / NE-DC for each band pair in the band combination.Encoded in the same manner as simultaneousRxTxInterBandCAPerBandPair.The UE does not include this field if the UE supports simultaneous transmission and reception for all applicable band pairs in the band combination (in which case simultaneousRxTxInterBandENDC is included) or does not support for any band pair in the band combination. It is mandatory for certain band pairs as specified in TS 38.101-3 V18.4.0. The UE shall consistently set the bits which correspond to the same band pair.Each bit of the capability only applies to TDD-TDD and TDD-FDD Inter-band (NG)EN-DC / NE-DC band pairs, except for the band pairs where the frequency range of the E-UTRA band is a subset of the frequency range of the NR band (as specified in Table 5.5B.4.1-1 of TS 38.101-3 V18.4.0).BCCYN / AN / Atdm-PatternIndicates whether the UE supports the tdm-PatternConfig for single UL-transmission associated functionality, as specified in TS 36.331 V18.0.0. Support is conditionally mandatory in (NG)EN-DC for UEs that do not support dynamicPowerSharingENDC and for UEs that indicate single UL transmission for any (NG)EN-DC BC. Support is conditionally mandatory in NE-DC for UEs that do not support dynamicPowerSharingNEDC and for UEs that indicate single UL transmission for any NE-DC BC. The feature is optional otherwise.BCCYN / AFR1 onlytdm-restrictionDualTX-FDD-endc-r16Indicates whether the UE supports TDM restriction to LTE FDD PCell in (NG)EN-DC for dual UL transmission operation when tdm-PatternConfig2-R16 is configured, as specified in TS 36.331 V18.0.0. UE indicates support this feature shall also indicate support of tdm-Pattern.BCNoN / AFR1 onlytdm-restrictionFDD-endc-r16Indicates whether the UE supports TDM restriction to LTE FDD PCell for single UL-transmission associated functionality when tdm-PatternConfig2-R16 is configured, as specified in TS 36.331 V18.0.0. This is applicable for FDD (NG)EN-DC. UE indicates support this feature shall also indicate support of tdm-Pattern.BCNoN / AFR1 onlytdm-restrictionTDD-endc-r16Indicates whether the UE supports TDM restriction to LTE TDD PCell for single UL-transmission associated functionality when tdm-PatternConfig2-R16 is configured, as specified in TS 36.331 V18.0.0. This is applicable for synchronous TDD-TDD (NG)EN-DC.BCNoN / AFR1 only

[0235] Table 12 shows examples of TS 38.306 V18.0.0 4.2.7.9 MRDC-Parameters.

[0236] 3GPP TS 38.306 V18.0.0 4.2.7.10 Phy-Parameters, 4.2.7.13 CarrierAggregationVariant may be referred.

[0237] TS38.101-3 V18.4.0 6.2B Transmitter power for DC may be referred. For example, 6.2B.1 UE maximum output power for DC may be referred. For example, 6.2B.1.3 Inter-band EN-DC within FR1 may be explained as the following.

[0238] For inter-band EN-DC of E-UTRA and NR in FR1, the following UE Power Classes may define the maximum output power for any transmission bandwidth within the aggregated channel bandwidth. The maximum output power may be measured as the sum of the maximum output power at each UE antenna connector. The period of measurement shall be at least one sub frame (1ms). UE maximum output power may be measured over all component carriers from different bands. If each band has separate antenna connectors, maximum output power is measured as the sum of maximum output power at each UE antenna connector.

[0239] Table 6.2B.1.3-1 in TS38.101-3 V18.4.0. shows examples of Maximum output power for inter-band EN-DC (two bands).

[0240] If a UE supports a different power class than the default UE power class (e.g., power class 3) for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination and the supported power class enables higher maximum output power than that of the default power class:

[0241] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 30% (The exact evaluation period is no less than one radio frame); or

[0242] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame); or

[0243] - iii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower;

[0244] - if one of i) to iii) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0245] - iv) Else if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is not provided or set to the higher value than the maximum output power of the default power class and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS 38.331 V18.0.0; or

[0246] - v) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is not provided or set to the higher value than the maximum output power of the default power class and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 30% when maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent. (The exact evaluation period is no less than one radio frame):

[0247] - if one of iv) to v) is satisfied, all requirements for the supported power class may be applied and a UE may set the configured transmitted power class as specified in sub-clause 6.2B.4 in 38.101-1 V18.4.0.

[0248] If a UE supports a different power class than the default UE power class for an E-UTRA FDD and NR TDD EN-DC band combination and the supported power class enables higher maximum output power than that of the default power class:

[0249] If UE indicating the two capabilities maxUplinkDutyCycle-FDD-TDD-EN-DC1 and maxUplinkDutyCycle-FDD-TDD-EN-DC2:

[0250] - i) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is not provided or set to the higher value than the maximum output power of the default power class, and the percentage of EUTRA uplink symbols transmitted in a certain evaluation period is between 40% and 70%, and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal tomaxUplinkDutyCycle-FDD-TDD-EN-DC1as defined in TS 38.331 V18.0.0 (The exact evaluation period is no less than one radio frame); or

[0251] - ii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is not provided or set to the higher value than the maximum output power of the default power class, and the percentage of EUTRA uplink symbols transmitted in a certain evaluation period is no larger than 40%, and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to maxUplinkDutyCycle-FDD-TDD-EN-DC2 as defined in TS 38.331 V18.0.0 (The exact evaluation period is no less than one radio frame),

[0252] - if one of i) or ii) is statisfied, all requirements for the supported power class may be applied and a UE may set the configured transmitted power class as specified in sub-clause 6.2B.4 in 38.101-1 V18.4.0.

[0253] else (e.g., none of the above i and ii are satisfied)

[0254] - all requirements for the default power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0255] Else (e.g., if UE does not indicate the two capabilities maxUplinkDutyCycle-FDD-TDD-EN-DC1 and maxUplinkDutyCycle-FDD-TDD-EN-DC2)

[0256] - shall apply all requirements for the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0257] S6.2B.4 Configured output power for DC in TS38.101-3 V18.4.0 is explained. For example, 6.2B.4.1 Configured output power level may be explained. For exmaple, 6.2B.4.1.3 Inter-band EN-DC within FR1 may be explained.

[0258] For inter-band dual connectivity with one uplink serving cell or more than one uplink serving cells configured for intra-band UL CA on the E-UTRA CG and one uplink serving cell on the NR CG or more than one uplink serving cells configured for intra-band UL CA, the UE is allowed to set its configured maximum output power PCMAX,c(i),ifor serving cell c(i) of CG i, i = 1,2, and its total configured maximum transmission power for EN-DC operation, = 10log10( ) with as specified in clause 7.6 of TS 38.213 V18.1.0. For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the E-UTRA CG, the PCMAXapplies to the entire E-UTRA CG. For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the NR CG, the PCMAXapplies to the entire NR CG. For a UE configured with EN-DC and serving cell frame structure type 1, if the UE is configured with subframeAssignment-r15 for the serving cell and E-UTRA Pcell is FDD, the UE is not expected to be configured with more than one serving cells in the uplink.

[0259] The configured maximum output power PCMAX_ E-UTRA,c(p) in sub-frame p for the configured E-UTRA uplink carrier(s) may be set within the bounds:

[0260] PCMAX_L_ E-UTRA,c(p) ≤PCMAX_ E-UTRA,c(p) ≤PCMAXH _ E-UTRA,c(p)

[0261] where PCMAX_L_ E-UTRA,candPCMAXH _ E-UTRA,care the limits for a serving cell c as specified in TS 36.101 V18.4.0 clause 6.2.5 modified by PLTEas follows:

[0262] PCMAX_L_ E-UTRA,cMIN { PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), MIN(PEMAX,c, PLTE) - ΔtC_ E-UTRA, c, (PPowerClass,E-UTRA- ΔPPowerClass,E-UTRA) - MAX(MPRc+ A-MPRc+ ΔTIB,c+ ΔtC_ E-UTRA, c+ ΔTProSe, P-MPRc)}

[0263] PCMAX_H_E-UTRA,c= MIN {PEMAX,c, PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), PLTE, PPowerClass,E-UTRA- ΔPPowerClass,E-UTRA}

[0264] For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the E-UTRA CG, PCMAX_L_E-UTRA,candPCMAX_H_E-UTRA,care the limits for the E-UTRA CG as specified in TS 36.101 V18.4.0 clause　6.2.5A modified by PLTEas follows:

[0265] PCMAX_L_ E-UTRA,c= MIN{10 log10∑pEMAX,c- ΔTC, (PPowerClass,E-UTRA- ΔPPowerClass,E-UTRA) - MAX(MPR + A-MPR + ΔTIB,c+ ΔTC+ ΔTProSe, P-MPR), PLTE, PPowerClass,EN-DC}

[0266] PCMAX_H_E-UTRA,c= MIN{10 log10∑pEMAX,c, PPowerClass,E-UTRA, PLTE, PPowerClass,EN-DC}

[0267] The configured maximum output power PCMAX,f,c,NR(q) in physical-channel q for the configured NR carrier shall be set within the bounds:

[0268] PCMAX_L,f,c,NR(q) ≤ PCMAX,f,c,NR(q) ≤ PCMAX_H,f,c,NR(q)

[0269] where PCMAX_L,f,c,NRandPCMAX_H,f,c,NRare the limits for a serving cell c as specified in clause 6.2.4 of TS 38.101-1 V18.4.0 modified as follows:

[0270] PCMAX_L,f,c,NRMIN { PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), MIN(PEMAX,c, PNR) - ΔTC_NR, c, (PPowerClass,NR- ΔPPowerClass,NR) - MAX(MAX(MPRc, A-MPRc)+ ΔTIB,c+ ΔTC_NR, c+ ΔTRxSRS, P-MPRc) }

[0271] PCMAX_H,f,c,NR= MIN {PEMAX,c, PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), PNR, PPowerClass,NR- ΔPPowerClass,NR}

[0272] For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the NR CG, PCMAX_L,f,c, NRandPCMAX_H,f,c, NRare the limits for the NR CG as specified in TS 38.101-1 V18.4.0 subclause 6.2A.4 modified by PNRas follows:

[0273] PCMAX_L,f,c,NR= MIN{10 log10∑pEMAX,c- ΔTC, PEMAX,CA, PPowerClass,NR- MAX(MPR + A-MPR + ΔTIB,c+ ΔT_NR ,C+ ΔTRxSRS, P-MPR), PNR, PPowerClass,EN-DC}

[0274] PCMAX_H,f,c,NR= MIN{10 log10∑pEMAX,c, PEMAX,CA, PPowerClass,NR, PNR, PPowerClass,EN-DC}

[0275] where

[0276] - PEMAX,EN-DCis the value given by the field p-maxUE-FR1 of the RRCConnectionReconfiguration-v1530 IE as defined in TS 36.331 V18.0.0;

[0277] - If more than one E-UTRA uplink serving cell is configured as intra-band UL CA in the E-UTRA CG, PPowerClassrefers to the maximum output power of the E-UTRA intra-band CA power class given in Table 6.2.2A-1 of TS 36.101 V18.4.0,

[0278] - If more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG, PPowerClassrefers to the maximum output power of the NR intra-band CA power class given in sub clause 6.2A.1 of TS 38.101-1 V18.4.0,

[0279] - PLTEis the value given by the field p-maxEUTRA-r15 of the RRCConnectionReconfiguration-v1510 IE as defined in TS 36.331 V18.0.0;

[0280] - If more than one E-UTRA uplink serving cell is configured as intra-band UL CA in the E-UTRA CG, MPRc= MPR and A-MPRc= A-MPR with MPR and A-MPR specified in clause 6.2.3A and clause 6.2.4A of TS 36.101 V18.4.0 respectively. There is one power management term for the UE, denoted P-MPR, and P-MPRc= P-MPR. PCMAX_ E-UTRA,cis calculated under the assumption that the transmit power is increased by the same amount in dB on all component carriers within the E-UTRA CG.

[0281] - If more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG, MPRcand A-MPRcare determined by subclause 6.2.2 of TS 38.101-1 V18.4.0. There is one power management term for the UE, denoted P-MPR, and P-MPRc= P-MPR.

[0282] - PNRis the value given by the field p-NR-FR1 of the PhysicalCellGroupConfig IE as defined in TS　38.331 V18.0.0;

[0283] - Δtc_E-UTRA, c= 1.5 dB when NOTE 2 in Table 6.2.2-1 in TS 36.101 V18.4.0 applies for a serving cell c, otherwise ΔTC_ E-UTRA,c= 0 dB;

[0284] - ΔTC_NR,c= 1.5dB when NOTE 3 in Table 6.2.1-1 in TS 38.101-1 V18.4.0 applies for a serving cell c, otherwise ΔTC_NR,c= 0 dB; ΔTC_NR,Cis the highest value ΔTC_NR,Camong all serving cells c if more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG;

[0285] - PPowerClass, EN-DCis the nominal UE power class indicated by PowerClass defined in clause 6.2B.1.3 for inter-band EN-DC; if the UE indicates higherPowerLimit-r17 and ΔPPowerClass,EN-DC= 0, PPowerClass,EN-DCis replaced by the sum of the linear powers of PPowerClass,NRand PPowerClass,E-UTRAconverted to dB;

[0286] - ΔPPowerClass,EN-DC= 3 dB for a power class 2 capable EN-DC UE when requirements of default power class had been applied as specified in sub-clause 6.2B.1; otherwise ΔPPowerClass,EN-DC= 0 dB;

[0287] - NOTE: ΔPPowerClass,EN-DCreporting capability XXX-r18, as defined in TS 38.306, is used to report ΔPPowerClass,EN-DCwhen the network configures the UE with the reporting and the reporting is triggered only by uplink duty cycle exceedance or by return to the powerClass after the duty cycle exceedance.

[0288] - PPowerClass,NRis the nominal UE power of the power class indicated by ue-PowerClass that the UE supports for the NR band and for NR intra-band UL CA of the EN-DC combination as defined in clause 6.2.1 or 6.2A1.1 of 38.101-1 V18.4.0; in case IE powerClassNRPart-r16 as defined in TS 38.331 V18.0.0 is indicated, PPowerClass,NRshould use that value instead;

[0289] - ΔPPowerClass,NRis 3 dB or 0 dB according to clause 6.2.4 of TS 38.101-1 V18.4.0 for a UE that supports power class 2 in the NR band of the EN-DC combination as defined in clause 6.2.1 of TS 38.101-1 V18.4.0;

[0290] - PPowerClass,E-UTRAis the nominal UE power of the power class indicated by ue-PowerClass-N-r13 that the UE supports for the E-UTRA band or indicated by ue-CA-PowerClass-N E-UTRA intra-band UL CA of the EN-DC combination as defined in clause 6.2.2 or 6.2.2A of 36.101 [4];

[0291] - ΔPPowerClass,E-UTRAis 3 dB or 0 dB according to clause 6.2.5 of TS 36.101 V18.4.0 for a UE that supports power class 2 in the E-UTRA band of the EN-DC combination as defined in clause 6.2.2 of TS 36.101 V18.4.0;

[0292] - ΔTIB,cspecified in clause 6.2B.4.2.3 for EN-DC, the individual Power Class defined in table 6.2B.1.3 and any other additional power reductions parameters specified in clauses 6.2B.2 and 6.2B.3for EN-DC are applicable to PCMAX_ E-UTRA,cand PCMAX,f,c,NRevaluations.

[0293] - ΔTRxSRSis the highest value among all serving cells c.

[0294] If the transmissions from NR and E-UTRA do not overlap, then the complete clauses for configured transmitted power for E-UTRA and NR respectively from their own specifications apply with the modifications specified above. The lower value between PPowerClass, EN-DCor PEMAX, EN-DCshall not be exceeded at any time by UE.

[0295] = 10log10( ) with the configured maximum transmission power for EN-DC operation as specified in clause 7.6 of TS 38.213 V18.1.0.

[0296] The total configured maximum transmission power for both synchronous and non-synchronous operation is

[0297] = MIN { PEMAX, EN-DC,PPowerClass, EN-DC- ΔPPowerClass,EN-DC}

[0298] If the UE does not support dynamic power sharing,

[0299] = MIN { PEMAX, EN-DC,PPowerClass, EN-DC- ΔPPowerClass,EN-DC} + 0.3 dB

[0300] If the EN-DC UE does not support dynamic power sharing, then the complete clauses for configured transmitted power for E-UTRA and NR respectively from their own specifications TS 36.101 V18.4.0 and TS 38.101-1 V18.4.0 respectively apply with the modifications specified above and applies.

[0301] When a UE supporting dynamic sharing is configured for overlapping E-UTRA uplink and NR uplink transmissions, the UE can set its configured maximum output power PCMAX_ E-UTRA,cand PCMAX,f,c,NRfor the configured E-UTRA and NR uplink carriers, respectively, and its configured maximum transmission power The measured total maximum output power PUMAXover both CGs / RATs, measured over the transmission reference time duration is

[0302] PUMAX= 10 log10[pUMAX,c,E-UTRA+ pUMAX,c,NR],

[0303] where pUMAX,c,E-UTRAand pUMAX,c,NRdenotes the measured output power of serving cell c for E-UTRA and NR respectively, expressed in linear scale.

[0304] The measured total configured maximum output power PUMAXshall be within the following bounds:

[0305] PCMAX_L-TLOW(PCMAX_L) ≤ PUMAX≤ PCMAX_H+ THIGH(PCMAX_H)

[0306] with the tolerances TLOW(PCMAX_H) and THIGH(PCMAX_H) for applicable values of PCMAXspecified in Table 13.

[0307] When an UL subframe transmission p from E-UTRA overlap with a physical-channel q from the NR, then for PUMAXevaluation, the E-UTRA subframe p is taken as reference period TREFand always considered as the reference measurement duration and the following rules are applicable.

[0308] TREFand Tevalare specified in Table 27 when same or different subframe and physical-channel durations are used in aggregated carriers. The lesser of PPowerClass ,EN-DCand PEMAX,EN-DCshall not be exceeded by the UE during any evaluation period of time where PPowerClass ,EN-DCis replaced by the sum of the linear powers of PPowerClass,NRand PPowerClass,E-UTRAconverted to dB if the UE indicates higherPowerLimit-r17.

[0309] For each TREF, the PCMAX_His evaluated per Tevaland given by the maximum value over the transmission(s) within the Tevalas follows:

[0310] PCMAX_HMAX { PCMAX_EN-DC_H(p,q) , PCMAX_EN-DC_H(p,q+1), ... , PCMAX_EN-DC_H(p,q+n) }

[0311] where PCMAX_EN-DC_Hare the applicable upper limits for each overlapping scheduling unit pairs (p,q) , (p, q+1) , up to (p, q+n) for each applicable Tevalduration, where q+n is the last NR UL physical-channel overlapping with E-UTRA subframe p.

[0312] While PCMAX_Lis computed as follows:

[0313] PCMAX_L= MIN { PCMAX_EN-DC_L(p,q) , PCMAX_EN-DC_L(p,q+1), ... , PCMAX_EN-DC_L(p,q+n)}

[0314] where PCMAX_EN-DC_Lare the applicable lower limits for each overlapping scheduling unit pairs (p,q) , (p, q+1) , up to (p, q+n) for each applicable Tevalduration, where q+n is the last NR UL physical-channel overlapping with E-UTRA subframe p,

[0315] With

[0316] PCMAX_EN-DC_H(p,q) = MIN {10 log10[pCMAX_H_E-UTRA,c(p) + pCMAXH,f,c,NR(q)], PEMAX, EN-DC,PPowerClass, EN-DC}

[0317] And:

[0318] a= 10 log10[pCMAX_ E-UTRA,c(p) +pCMAX,f,c,NR(q) ] >

[0319] b= 10 log10[pCMAX_ E-UTRA,c(p) +pCMAX,f,c,NR(q) / X_scale] >

[0320] If a= FALSE

[0321] PCMAX_EN-DC_L(p,q) = MIN {10 log10[pCMAX_L_E-UTRA,c(p) + pCMAX_L,f,c,NR(q)], PEMAX,EN-DC,PPowerClass, EN-DC}

[0322] ELSE If (a=TRUE) AND (b=FALSE)

[0323] PCMAX_EN-DC_L(p,q) = MIN {10 log10[pCMAXL _ E-UTRA,c(p) + pCMAXL,f,c,NR(q) / X_scale ], PEMAX, EN-DC,PPowerClass, EN-DC}

[0324] ELSE If b= TRUE

[0325] PCMAX_ EN-DC_L(p,q) = MIN {10 log10[pCMAX_L_E-UTRA,c(p) ], PEMAX, EN-DC,PPowerClass, EN-DC}

[0326] where

[0327] - pCMAX_H_E-UTRA,c(p) is the E-UTRA higher limit of the maximum configured power expressed in linear scale;

[0328] - pCMAX_L,f,c,NR(q) is the NR higher limit of the maximum configured power expressed in linear scale;

[0329] - pCMAX_L_E-UTRA,c(p) is the E-UTRA lower limit of the maximum configured power expressed in linear scale;

[0330] - pCMAX_L,f,c,NR(q) is the NR lower limit of the maximum configured power expressed in linear scale;

[0331] - PPowerClass, EN-DCis defined in clause 6.2B.1.3-1 for inter-band EN-DC; if the UE indicates higherPowerLimit-r17, PPowerClass,EN-DCis replaced by the sum of the linear powers of PPowerClass,NRand PPowerClass,E-UTRAconverted to dB;

[0332] - X_scale is the linear value of X dB which is configured by RRC and can only take values [0 , 6]

[0333] - pCMAX_ E-UTRA,c(p) is the linear value of PCMAX_ E-UTRA,c(p), the configured max power for E-UTRA. If more than one E-UTRA uplink serving cell is configured as intra-band UL CA in the E-UTRA CG, PCMAX_ E-UTRA,c(p) will be replaced by PCMAX(p) which is the configured maximum power for the entire E-UTRA CG.

[0334] - pCMAX,f,c,NR(q) is the linear value of PCMAX,f,c,NR(q), the configured max power of NR, If more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG, PCMAX_ NR,c(q) will be replaced by PCMAX(q) which is the configured maximum power for the entire NR CG.

[0335] PCMAX(dBm)ToleranceTLOW(PCMAX_L) (dB)ToleranceTHIGH(PCMAX_H) (dB)23 ≤ PCMAX ≤333.02.022 ≤PCMAX< 235.02.021 ≤PCMAX< 225.03.020 ≤PCMAX< 216.04.016 ≤PCMAX< 205.011 ≤PCMAX< 166.0-40 ≤PCMAX< 117.0NOTE 1: For UEs not indicating support of dynamic power sharing, the upper tolerance Thighshall be reduced by 0.3 dB for P ≥ 20 dBm.

[0336] Table 13 shows examples of PCMAX tolerance for Dual Connectivity E-UTRA-NR

[0337] When E-UTRA and NR transmissions overlap and the condition (If (a=TRUE) AND (b=FALSE)) is met, SCG shall be transmitted and the following supplementary minimum requirement apply for the measured SCG power, PUMAX,f,c,NR(q), under nominal conditions.

[0338] 10log(pCMAX_L,f,c,NR(q) / X_scale) - TLOW(10log(pCMAXL,f,c,NR(q) / X_scale) )} ≤ PUMAX,f,c,NR(q) ≤ 10log(pCMAXH, f,c,NR(q)) + THIGH(10log(pCMAXH, f,c,NR(q))).

[0339] with the tolerances TLOWand THIGHfor applicable values of PCMAXspecified in Table 13.

[0340] TS 38.101-3 V18.4.0 S6.2H Transmitter power for DC with UL MIMO may be referred. 6.2H.1 UE maximum output power for DC with UL MIMO may be referred. 6.2H.1.3 Inter-band EN-DC with UL MIMO within FR1 may be referred. 6.2H.4 Configured output power for DC with UL MIMO may be referred. 6.2H.4.1 Configured output power level may be referred. 6.2H.4.1.3 Inter-band EN-DC with UL MIMO within FR1 may be referred.

[0341] TS 38.101-3 V18.4.0 6.2L Transmitter power for DC with Tx Diversity may be referred. 6.2L.1 UE maximum output power for DC with Tx Diversity may be referred. 6.2L.1.3 Inter-band EN-DC with Tx Diversity within FR1 may be referred.

[0342] Dual connectivity is explained. For example, 7.6 Dual connectivity in TS 38.213 V18.1.0 may be referred for detailed explanation. 7.6.1 EN-DC in TS 38.213 V18.1.0 may be referred.

[0343] If a UE is configured with a MCG using E-UTRA radio access and with a SCG using NR radio access, the UE is configured a maximum power PLTEfor transmissions on the MCG by p-MaxEUTRA and a maximum power PNRfor transmissions in FR1 on the SCG by p-NR-FR1.

[0344] The UE determines a transmission power for the MCG as described in [13, TS 36.213 V18.1.0] using PLTEas the maximum transmission power. The UE determines transmission power for the SCG in FR1 as described in clauses 7.1 through 7.5 in TS 38.213 V18.1.0 using PNRas the maximum transmission power. The UE determines transmission power for the SCG in FR2 as described in clauses 7.1 through 7.5 in TS 38.213 V18.1.0.

[0345] A UE does not expect to be configured for operation with shortened TTI and / or processing time TS 36.213 V18.1.0 on a cell that is included in an EN-DC configuration.

[0346] If a UE is configured with , where is the linear value of PLTE, is the linear value of PNR, and is the linear value of a configured maximum transmission power for EN-DC operation as defined in TS 38.101-3 V18.4.0 for FR1, the UE determines a transmission power for the SCG as follows.

[0347] - If the UE is configured with reference TDD configuration for E-UTRA (by tdm-PatternConfig or by tdm-PatternConfig2 in TS 36.213 V18.1.0)

[0348] - If the UE does not indicate a capability for dynamic power sharing between E-UTRA and NR for EN-DC, the UE does not transmit in a slot on the SCG in FR1 when a corresponding subframe on the MCG is an UL subframe in the reference TDD configuration.

[0349] - If the UE indicates a capability for dynamic power sharing between E-UTRA and NR for EN-DC, and does not indicate a capability tdm-restrictionDualTX-FDD-endc-r16 in TS 38.306, and is configured with tdm-PatternConfig2, the UE does not transmit on the SCG in FR1 when the UE has overlapped transmission on a subframe on the MCG.

[0350] - If the UE indicates a capability for dynamic power sharing between E-UTRA and NR for EN-DC and

[0351] - if UE transmission(s) in subframe i1of the MCG overlap in time with UE transmission(s) in slot i2of the SCG in FR1, and

[0352] - if in any portion of slot i2of the SCG,

[0353] the UE reduces transmission power in any portion of slot i2of the SCG so that in any portion of slot i2, where and are the linear values of the total UE transmission powers in subframe i1of the MCG and in slot i2of the SCG in FR1, respectively. The UE is not required to transmit in any portion of sloti2of the SCG if 　would need to be reduced by more than the value provided by XSCALEin order for 　in any portion of slot i2of the SCG. The UE is required to transmit in slot i2of the SCG if 　would not need to be reduced by more than the value provided by XSCALEin order for 　in all portions of slot i2.

[0354] - If the UE does not indicate a capability for dynamic power sharing between E-UTRA and NR for EN-DC, the UE expects to be configured with reference TDD configuration for E-UTRA by tdm-PatternConfig in TS 36.213 V18.1.0.

[0355] A UE may support power class 1.5, power class 2, etc. The UE may support inter-band EN-DC.

[0356] For PC1.5 UE supporting inter-band EN-DC, and for PC2 UE supporting inter-band EN-DC, the UE may trasnmit capability information to network (NW) (e.g., a base station). For example, the capability information may include information related to power class(e.g., PC1.5, PC2, etc.) that the UE supports and / or inter-band EN-DC. The UE may transmit information related to the power class of the UE together with the capability information. Or, the capbility information may include the information related to the power class.

[0357] The NW may transmit information related to the allowed UE power, band, modulation order and / or others, to the UE.

[0358] The UE may configure its transmission power based on the information received from the NW. The UE may transmit signal to the NW based on the transmission power.

[0359] The UE may report the configured transmission power and the power headroom to the NW.

[0360] Information related to power class, dynamic power sharing, TDM pattern, maximum uplink duty cycle, simultaneous Rx / Tx, full power mode, Tx diversity, dual PA, etc. are defined in TS38.306 V18.0.0 as follows.

[0361] Related to capability of UE maximum output power, the followings are defined:

[0362] - powerClass-v1530 (per BandCombination) : Power Class 2

[0363] - powerClass-v1610 (per BandCombination) : Power Class 1.5

[0364] - ue-PowerClass (per Band) : Power Class 1, Power Class 2, Power Class 3, Power Class 4

[0365] - ue-PowerClass-v1610 (per Band) : Power Class 1.5

[0366] - ue-PowerClass-v1700 (per Band) : Power Class 5, Power Class 6, Power Class 7

[0367] - ue-PowerClassPerBandPerBC-r17 (FS, perBandperBandCombination) : Power Class 1.5, Power Class 2, Power Class 3

[0368] - ue-CA-PowerClass-N (per BC): This field defines the power class the UE supports for a E-UTRA band combination

[0369] - higherPowerLimitMRDC-r17 (per BC): it supports increase in maximum output power above the power class indication for inter-band UL (NG)EN-DC band combinations as defined in clause 6.2B of TS 38.101-3 V18.4.0.

[0370] - DeltaPowerClass,EN-DC (per BC) : it supports ΔPPowerClass,EN-DC reporting which is triggered upon uplink duty cycle exceedance or upon return to the power class after the duty cycle exceedance in EN-DC

[0371] - DeltaPowerClass (per Band) : it supports ΔPPowerClassreporting which is triggered upon uplink duty cycle exceedance or upon return to the power class after the duty cycle exceedance in a single carrier

[0372] Related to Capability of Dynamic power sharing between E-UTRA and NR for EN-DC, dynamicPowerSharingENDC (per BC) is defined.

[0373] Related to Capability of TDM pattern, the followings are defined:

[0374] - tdm-Pattern (per BC): indicates whether the UE supports the tdm-PatternConfig for single UL-transmission associated functionality, as specified in TS 36.331 V18.0.0. Supporting tdm-Pattern (per BC) is conditionally mandatory in (NG)EN-DC, for UEs that do not support dynamicPowerSharingENDC and for UEs that indicate single UL transmission for any (NG)EN-DC BC. Supporting tdm-Pattern (per BC) is conditionally mandatory in NE-DC, for UEs that do not support dynamicPowerSharingNEDC and for UEs that indicate single UL transmission for any NE-DC BC. The feature is optional otherwise.

[0375] - tdm-restrictionDualTX-FDD-endc-r16 (per BC) : indicates whether the UE supports TDM restriction to LTE FDD PCell in (NG)EN-DC for dual UL transmission operation when tdm-PatternConfig2-R16 is configured

[0376] - tdm-restrictionFDD-endc-r16 (per BC) : indicates whether the UE supports TDM restriction to LTE FDD PCell for single UL-transmission associated functionality when tdm-PatternConfig2-R16 is configured

[0377] - tdm-restrictionTDD-endc-r16 (per BC) : indicates whether the UE supports TDM restriction to LTE TDD PCell for single UL-transmission associated functionality when tdm-PatternConfig2-R16 is configured

[0378] Related to capability of maxUplinkDutyCycle, the followings are defined:

[0379] - maxUplinkDutyCycle-PC2-FR1 (per Band)

[0380] - maxUplinkDutyCycle-PC1dot5-MPE-FR1-r16 (per Band)

[0381] - maxUplinkDutyCycle-interBandENDC-FDD-TDD-PC2-r16 (per BC) : used for FDD(EUTRA)+TDD(NR). maxUplinkDutyCycle-FDD-TDD-EN-DC1, and maxUplinkDutyCycle-FDD-TDD-EN-DC2 may be included.

[0382] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 (per BC) : used for TDD(EUTRA)+TDD(NR). Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for NR uplink transmission under different EUTRA TDD uplink-downlink configurations so as to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is only applicable for inter-band TDD+TDD EN-DC power class 2 UE as specified in TS 38.101-3 V18.4.0. If the field is absent, 30% shall be applied to all EUTRA TDD uplink-downlink configurations. If eutra-TDD-Configx is absent, 30% shall be applied to the corresponding EUTRA TDD uplink-downlink configuration. Value n20 corresponds to 20%, value n40 corresponds to 40% and so on.

[0383] Related to Capability of simultaneous Rx / Tx in inter-band EN-DC, the followings are defined:

[0384] - simultaneousRxTxInterBandENDC (per BC)

[0385] - simultaneousRxTxInterBandENDCPerBandPair (per BC)

[0386] Related to Capability of UE UL MIMO Full Power mode, the followings are defined:

[0387] - ul-FullPwrMode-r16 (FS)

[0388] - ul-FullPwrMode1-r16 (FS)

[0389] - ul-FullPwrMode2-MaxSRS-ResInSet-r16 (FS)

[0390] - ul-FullPwrMode2-SRSConfig-diffNumSRSPorts-r16 (FS)

[0391] - ul-FullPwrMode2-TPMIGroup-r16

[0392] Related to Capability of Tx Diversity, the followings are defined:

[0393] - txDiversity-r16 (per Band)

[0394] - txDiversity2Tx-r18 (FS, both single band(non-CA) and CA) : non-CA may mean EN-DC

[0395] - txDiversity4Tx-r18 (FS, both single band(non-CA) and CA) : non-CA may mean EN-DC

[0396] Related to Capability of dualPA, the followings are defined:

[0397] - dualPA-Architecture (per BC, MRDC). For an intra-band band combination, this field indicates the support of dual PAs. If absent in an intra-band band combination, the UE supports single PA for all the ULs in the intra-band band combination. For other band combinations, this field is not applicable

[0398] NW(e.g., base station) may transmit information(e.g., related signalins) to the UE. For example, the information may include one or more of the following information:

[0399] - p-maxUE-FR1 (it corresponds to PEMAX,EN-DCin UE configured transmission power below. It indicates the maximum total transmit power to be used by the UE across all serving cells in frequency range 1 (FR1).)

[0400] - p-maxEUTRA (it corresponds to PLTEin UE configured transmission power below. It indicates the maximum total transmit power to be used by the UE in the E-UTRA cell group (see TS 36.104). This field is used in (NG)EN-DC and NE-DC.)

[0401] - p-maxNR-FR1 (it corresponds to PNRin UE configured transmission power below. It indicates the maximum total transmit power to be used by the UE in the NR cell group across all serving cells in frequency range 1 (FR1). This field is used in (NG)EN-DC and NE-DC.).

[0402] MRDC-Parameters-v1620 of TS38.331 V18.0.0 may be referred. MRDC-Parameters-v1620 may include maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16, tdm-restrictionTDD-endc-r16, tdm-restrictionFDD-endc-r16, singleUL-HARQ-offsetTDD-PCell-r16, and / or tdm-restrictionDualTX-FDD-endc-r16. maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 may include eutra-TDD-Config0-r16, eutra-TDD-Config1-r16, eutra-TDD-Config2-r16, eutra-TDD-Config3-r16, eutra-TDD-Config4-r16, eutra-TDD-Config5-r16, eutra-TDD-Config6-r16. MRDC-Parameters-v1630 may inlcude maxUplinkDutyCycle-interBandENDC-FDD-TDD-PC2-r16, interBandMRDC-WithOverlapDL-Bands-r16. maxUplinkDutyCycle-interBandENDC-FDD-TDD-PC2-r16 may inlucde maxUplinkDutyCycle-FDD-TDD-EN-DC1-r16, maxUplinkDutyCycle-FDD-TDD-EN-DC2-r16.

[0403] Frame structyre type 2 according to TS36.211 4.2 Frame structure type 2 is explained.

[0404] Frame structure type 2 is applicable to TDD only. Each radio frame of length Tf=307200*Ts=10ms consists of two half-frames of length 153600*Ts=5ms each. Each half-frame consists of five subframes of length 30720*Ts=1ms. Each subframe iis defined as two slots, 2i and 2i+1, of length Tslot=15360*Ts=0.5ms each. Subframe i in frame nfhas an absolute subframe number =10*nf+1where nfis the system frame number.

[0405] The uplink-downlink configuration in a cell may vary between frames and controls in which subframes uplink or downlink transmissions may take place in the current frame. The uplink-downlink configuration in the current frame is obtained according to Clause 13 in TS36.213 V18.1.0.

[0406] The supported uplink-downlink configurations are listed in Table 15 where, for each subframe in a radio frame, "D" denotes a downlink subframe reserved for downlink transmissions, "U" denotes an uplink subframe reserved for uplink transmissions and "S" denotes a special subframe with the three fields DwPTS, GP and UpPTS. The length of DwPTS and UpPTS is given by Table 14 subject to the total length of DwPTS, GP and UpPTS being equal to 30720*Ts=1ms where X is the number of additional SC-FDMA symbols in UpPTS provided by the higher layer parameter srs-UpPtsAdd if configured otherwise X is equal to 0. The UE is not expected to be configured with 2 additional UpPTS SC-FDMA symbols for special subframe configurations {3, 4, 7, 8} for normal cyclic prefix in downlink and special subframe configurations {2, 3, 5, 6} for extended cyclic prefix in downlink and 4 additional UpPTS SC-FDMA symbols for special subframe configurations {1, 2, 3, 4, 6, 7, 8} for normal cyclic prefix in downlink and special subframe configurations {1, 2, 3, 5, 6} for extended cyclic prefix in downlink.

[0407] Uplink-downlink configurations with both 5 ms and 10 ms downlink-to-uplink switch-point periodicity are supported.

[0408] - In case of 5 ms downlink-to-uplink switch-point periodicity, the special subframe exists in both half-frames.

[0409] - In case of 10 ms downlink-to-uplink switch-point periodicity, the special subframe exists in the first half-frame only.

[0410] Subframes 0 and 5 and DwPTS are always reserved for downlink transmission. For special subframe configurations 1, 2, 3, 4, 6, 7 and 8, DwPTS is split into two parts, of which the first part is a slot and the second part is of X-symbol duration within the second slot. Downlink subframes, downlink slots in the downlink subframe and DwPTS, and the X-symbol duration in the second slot of DwPTS are available for downlink transmission. The X-symbol transmission opportunity is only available for special subframe configuration 3,4 and 8.

[0411] UpPTS and the subframe immediately following the special subframe are always reserved for uplink transmission. Uplink subframes, uplink slots and UpPTS with special subframe configuration 10 are available for uplink transmission. Note that UpPTS with special subframe configuration 10 are not available for SPUCCH transmission.

[0412] In case multiple cells are aggregated, the UE may assume that the guard period of the special subframe in the cells using frame structure type 2 have an overlap of at least 1456*Ts.

[0413] In case multiple cells with different uplink-downlink configurations in the current radio frame are aggregated and the UE is not capable of simultaneous reception and transmission in the aggregated cells, the following constraints apply:

[0414] - if the subframe in the primary cell is a downlink subframe, the UE shall not transmit any signal or channel on a secondary cell in the same subframe

[0415] - if the subframe in the primary cell is an uplink subframe, the UE is not expected to receive any downlink transmissions on a secondary cell in the same subframe

[0416] - if the subframe in the primary cell is a special subframe and the same subframe in a secondary cell is a downlink subframe, the UE is not expected to receive PDSCH / EPDCCH / PMCH / PRS transmissions in the secondary cell in the same subframe, and the UE is not expected to receive any other signals on the secondary cell in OFDM symbols that overlaps with the guard period or UpPTS in the primary cell.

[0417] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0418] FIG. 7 shows an example of fram structure type 2.

[0419] FIG. 7 shows examples of Frame structure type 2 (for 5 ms switch-point periodicity). One radio frame inlcudes two half-frame. One half-frame may inlcude 5 subframes. One subframe may inlcude two slots.

[0420] lengths of DwPTS / GP / UpPTS in FIG. 7 may be based on examples shonw in Table 14.

[0421] Special subframe configurationNormal cyclic prefix in downlinkExtended cyclic prefix in downlinkDwPTSUpPTSDwPTSUpPTSNormal cyclic prefixin uplinkExtended cyclic prefixin uplinkNormal cyclic prefix in uplinkExtended cyclic prefix in uplink06582*Ts(1+X)*2192*Ts(1+X)*2560*Ts7680*Ts(1+X)*2192*Ts(1+X)*2560*Ts119760*Ts20480*Ts221952*Ts23040*Ts324144*Ts25600*Ts426336*Ts7680*Ts(2+X)*2192*Ts(2+X)*2560*Ts56592*Ts(2+X)*2192*Ts(2+X)*2560*Ts20480*Ts619760*Ts23040*Ts721952*Ts12800*Ts824144*Ts---913168*Ts---1013168*Ts13152*Ts12800*Ts---

[0422] Table 14 shows examples of Configuration of special subframe (lengths of DwPTS / GP / UpPTS)

[0423] Uplink-downlinkconfigurationDownlink-to-UplinkSwitch-point periodicitySubframe number012345678905 msDSUUUDSUUU15 msDSUUDDSUUD25 msDSUDDDSUDD310 msDSUUUDDDDD410 msDSUUDDDDDD510 msDSUDDDDDDD65 msDSUUUDSUUD

[0424] Table 15 shows examples of Uplink-downlink configurations.

[0425] 1. The first exmaple of the present disclosure

[0426] In the first example of the present discosure, [1 Inter-band EN-DC including PC1.5 : percentage of UL transmission] may be exaplained.

[0427] For E-UTRA TDD uplink-downlink configuration of '0', E-UTRA uplink transmission is expected with maximum 70% of subframes during any evaluation period of time which is larger than or equal to at least 10ms.

[0428] - In case of PC2 supported with 23dBm for E-UTRA TDD and 23dBm for NR TDD,

[0429] i) the percentage of NR uplink symbols transmitted in the evaluation period may be allowed with up to 30% to solve Specific Absorption Rate (SAR) issue for PC2 UE NR supporting an E-UTRA TDD and NR TDD Inter-band EN-DC band combination.

[0430] ii) R4-1915992 based Introducing requirements for PC2 EN-DC (1 LTE band (PC3) +1 NR band (PC3) with 1Tx) UE (TR37.825) may be referred.

[0431] iii) For TS38.101-3(V16.4.0), NOTE 5 of Table 6.2B.1.3-1may be used. NOTE 5: The UE is not required to support PC2 within each individual cell group. Power class support within each individual cell group is signaled separately by the UE. (1 LTE band (PC3) +1 NR band (PC3) with 1Tx)

[0432] - In case of PC2 supported with 23dBm for E-UTRA TDD and 26dBm for NR TDD, TS38.101-3(V16.5.0) : NOTE 6 is added. NOTE 6: The UE supports PC3 within E-UTRA cell group, and　supports either PC3 or PC2 within NR cell group. Power class support within each individual cell group is signaled separately by the UE. However, in this case, if the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 30%, it cannot solve SAR. Therefore, SAR problem should be solved.

[0433] 1.2 UE supporting a power class 2 for an EN-DC (23dBm(E-UTRA TDD)+23dBm(NR TDD)) is explained.

[0434] For PC2(26dBm) UE in EN-DC(with E-UTRA TDD 23dBm and NR TDD 23dBm), with E-UTRA TDD uplink-downlink configuration of 'X', E-UTRA uplink transmission is expected with maximum Y% of subframes and NR uplink transmission is expected to maximum Z% symbols during any evaluation period of time which is larger than or equal to at least 10ms. Table 16 shows examples.

[0435] E-UTRA TDD Uplink-downlinkConfiguration (X)Percentage of maximum E-UTRA / NR uplink transmission during evaluation period (%)Supported EN-DC power class(Z:actual NR % of uplink transmission, D:threshold)E-UTRA (23dBm)NR (23dBm)Y=0~100Z=1~100Z <= DZ>D07030PC2PC3150502307034060430705208066040

[0436] Table 16 shows examples of percentage of maximum E-UTRA / NR uplink transmission in PC2 EN-DC (23dBm(E-UTRA TDD)+23dBm(NR TDD)).

[0437] In the present disclosure, 23dBm(E-UTRA TDD)+23dBm(NR TDD) may mean that E-UTRA TDD band and NR TDD band are configured for PC2 EN-DC, and may mean that maximum output power of 23dBm is used for E-UTRA TDD band and maximum output power of 23dBm is used for NR TDD.

[0438] For example, the UE may indicate threshhold D to a base station. For example, threshhold D may be preconfigured in the UE.

[0439] - if threshold(D) is indicated(e.g., the UE transmits threshold(D) to the base station)

[0440] Z <= D, PC2

[0441] Z > D, PC3

[0442] - else,

[0443] Z <= 30, PC2

[0444] Z > 30, PC3

[0445] Here, in the present disclosure, related to inequalities involving Z, PC2 and PC3 mean that requirements related to PC2 or PC3 are applied respectively.

[0446] Here, 30 is a minimum value of Z in Table 16(E-UTRA TDD uplink downlink configuration '0'). Or the value can be set depending on E-UTRA TDD uplink downlink configuration.

[0447] 1.3 UE supporting a power class 2 for an EN-DC (23dBm(E-UTRA TDD)+26dBm(NR TDD)) is explained.

[0448] For PC2(26dBm) UE in EN-DC(with E-UTRA TDD 23dBm and NR TDD 26dBm), with E-UTRA TDD uplink-downlink configuration of 'X', E-UTRA uplink transmission is expected with maximum Y% of subframes and NR uplink transmission is expected to maximum Z% symbols during any evaluation period of time which is larger than or equal to at least 10ms. Table 17 shows examples.

[0449] E-UTRA TDD Uplink-downlinkConfiguration (X)Percentage of maximum E-UTRA / NR uplink transmission during evaluation period (%)Supported EN-DC power class(Z:actual NR % of uplink transmission, D:threshold)E-UTRA (23dBm)NR (26dBm)Y=0~100Z=0~50,(100-Y) / 2Z <= DZ>D07015PC2PC3150252303534030430355204066020

[0450] Table 17 shows examples of Percentage of maximum E-UTRA / NR uplink transmission in PC2 EN-DC (23dBm(E-UTRA TDD)+26dBm(NR TDD)).

[0451] - if threshold(D) is indicated

[0452] Z <= D, PC2

[0453] Z > D, PC3

[0454] - else,

[0455] Z <= 15, PC2

[0456] Z > 15, PC3

[0457] Here, 15 is a minimum value of Z in Table 17(E-UTRA TDD uplink downlink configuration '0'). Or the value can be set depending on E-UTRA TDD uplink downlink configuration.

[0458] 1.4 UE supporting a power class 2 for an EN-DC (26dBm(E-UTRA TDD)+23dBm(NR TDD)) is explained.

[0459] For PC2(26dBm) UE in EN-DC(with E-UTRA TDD 26dBm and NR TDD 23dBm), with E-UTRA TDD uplink-downlink configuration of 'X', E-UTRA uplink transmission is expected with maximum Y% of subframes and NR uplink transmission is expected to maximum Z% symbols during any evaluation period of time which is larger than or equal to at least 10ms. Table 18 shows examples.

[0460] E-UTRA TDD Uplink-downlinkConfiguration (X)Percentage of maximum E-UTRA / NR uplink transmission during evaluation period (%)Supported EN-DC power class(Z:actual NR % of uplink transmission, D:threshold)E-UTRA (26dBm)NR (23dBm)Y=0~50Z=0~100,100-2*YZ <= DZ>D070N / APC2PC3150N / A23040340204304052060660N / A

[0461] Table 18 shows examples of Percentage of maximum E-UTRA / NR uplink transmission in PC2 EN-DC (26dBm(E-UTRA TDD)+23dBm(NR TDD)).

[0462] - if threshold(D) is indicated

[0463] Z <= D, PC2

[0464] Z > D, PC3

[0465] - else,

[0466] Z <= 20, PC2

[0467] Z > 20, PC3

[0468] Here, 20 is a minimum value of Z in Table 18(E-UTRA TDD uplink downlink configuration '3'). Or the value can be set depending on E-UTRA TDD uplink downlink configuration.

[0469] 1.5 UE supporting a power class 1.5 for an EN-DC (26dBm(E-UTRA TDD)+26dBm(NR TDD)) is explained.

[0470] For PC1.5(29dBm) UE in EN-DC(with E-UTRA TDD 26dBm and NR TDD 26dBm), with E-UTRA TDD uplink-downlink configuration of 'X', E-UTRA uplink transmission is expected with maximum Y% of subframes and NR uplink transmission is expected to maximum Z% symbols during any evaluation period of time which is larger than or equal to at least 10ms. Table 19 shows examples. E-UTRA TDD uplink-downlink configurations of 2 to 5 are assumed to be applied.

[0471] E-UTRA TDD Uplink-downlinkConfiguration (X)Percentage of maximum E-UTRA / NR uplink transmission during evaluation period (%)Supported EN-DC power class(Z:actual NR % of uplink transmission, D(D1,D2) :threshold)E-UTRA (26dBm)NR (26dBm) (Z=Z1 or Z2)Y=0~50Z1=0~50,50-Y=(100-2*Y) / 2Z2=25-Y=(50-2*Y) / 2=Z1-25Z > D1D2<=Z<=D1 orD1>=ZZ < D2070N / AN / AN / AN / AN / A150N / AN / AN / AN / AN / A23020N / APC3PC2N / A34010N / APC3PC2N / A43020N / APC3PC2N / A520305PC3PC2PC1.5660N / AN / AN / AN / AN / A

[0472] Z1 may be used as Z for cases in which PC2 EN-DC can be used. Z2 may be used as Z for cases in which PC1.5 EN-DC can be used. For example, when Z2 is smaller than 5(e.g, Z2 is 3%), 20% of LTE (26dBm) signal and 3% of NR(26dBm) signal may be used, such that sum may be 23%. In this case, because maximum percentage to use PC1.5 EN-DC is 25%, PC1.5 can be used for 23%.

[0473] Table 19 shows examples of Percentage of maximum E-UTRA / NR uplink transmission in PC1.5 EN-DC (26dBm(E-UTRA TDD)+26dBm(NR TDD)).

[0474] - if threshold(D) is indicated (e.g., D1=D, D2=D-25, in the present disclosure, the UE transmits threshold(D) to the base station)

[0475] - if D > 25

[0476] Z < D2, PC1.5

[0477] D2<=Z <= D1, PC2

[0478] Z > D1, PC3

[0479] - else,

[0480] Z <= D1, PC2

[0481] Z > D1, PC3

[0482] - else,

[0483] Z <= 10, PC2

[0484] Z > 10, PC3

[0485] Here, 10 is a minimum value of Z in Table 19(E-UTRA TDD uplink downlink configuration '3'). Or the value can be set depending on E-UTRA TDD uplink downlink configuration.

[0486] 2*Y + 2*Z > 100PC350 < 2*Y + 2*Z ≤ 100PC22*Y + 2*Z ≤ 50PC1.5

[0487] Table 20 shows example using the following formula for PC1.5 EN-DC (26dBm(E-UTRA TDD)+26dBm(NR TDD)).

[0488] Y is expected to be limited to 50% for 26dBm(E-UTRA TDD) considering E-UTRA TDD UL / DL transmission configuration and its power class 2 to meet SAR compliance.

[0489] Z is expected to be limited to 50% for 26dBm(NR TDD) considering its power class 2 to meet SAR compliance.

[0490] If either Y or Z is configured to be larger than 50%, then sum of Y and Z is larger than 50% and the average transimitted power is lager than 23dBm in a cetain evalution period. It may make SAR compliance failure. In case, UE has to configure the EN-DC total transmitted power as PC3.

[0491] Else if Y and Z is configured that sum of Y and Z is larger than 25% but less than or equal to 25%, the average transimitted power is less than 23dBm in a cetain evalution period. In case, UE can configure the EN-DC totoal transmitted power as PC2.

[0492] Else Y and Z is configured that sum of Y and Z is less than 25%, the average transimitted power is less than 23dBm in a cetain evalution period. In case, UE can configure the EN-DC totoal transmitted power as PC1.5.

[0493] Table 21 may be an example based on Table 20 and description related to Table 20.

[0494] threshold(D)D1=DD2=D-25PC2PC2DD1D2YZ2*Y + 2*ZPowerClass4040151050D1 < Z2*10+2*50 = 120 > 100PC330D2 ≤ Z ≤D150 < 2*10+2*30 80 ≤ 100PC210Z < D22*10+2*10 =40 ≤ 50PC1.5303052040D1 < Z2*20+2*40 = 120 > 100PC320D2 ≤ Z ≤D150 < 2*20+2*20 80 ≤100PC22.5Z < D22*20+2*2.5 =45 ≤ 50PC1.5252502530D1 < Z2*25+2*30 = 110 > 100PC310Z ≤ D150 < 2*25+2*10 = 70 ≤ 100PC22020-53030D1 < Z2*30+2*30 = 120 > 100PC310Z ≤ D150 < 2*30+2*10 = 80 ≤ 100PC21010-154020D1 < Z2*40+2*20 = 120 > 100PC310Z ≤ D150 < 2*40+2*10 = 100 ≤ 100PC2

[0495] Table 21 shows Example of power class fallback for PC1.5 EN-DC (26dBm(E-UTRA TDD)+26dBm(NR TDD)).

[0496] For example, when the UE is configured with PC1.5 EN-DC (26dBm(E-UTRA TDD)+26dBm(NR TDD)), the UE may be applied with requirements related to PC1.5, PC2, or PC3 based on the threshold D, D1, D2, Y, and / or Z in Table 20.

[0497] 1.6 UE supporting a power class 1.5 for an EN-DC (23dBm(E-UTRA TDD)+29dBm(NR TDD)) is explained.

[0498] For PC1.5(29dBm) UE in EN-DC(with E-UTRA TDD 23dBm and NR TDD 29dBm(2x26dBm)), with E-UTRA TDD uplink-downlink configuration of 'X', E-UTRA uplink transmission is expected with maximum Y% of subframes and NR uplink transmission is expected to maximum Z% symbols during any evaluation period of time which is larger than or equal to at least 10ms. Table 22 shows examples.

[0499] E-UTRA TDD Uplink-downlinkConfiguration (X)Percentage of maximum E-UTRA / NR uplink transmission during evaluation period (%)Supported EN-DC power class(Z:actual NR % of uplink transmission, D(D1,D2) :threshold)E-UTRA (23dBm)NR (29dBm) (Z=Z1 or Z2)Y=0~100Z1=0~25,(100-Y) / 4Z2=0~25,(50-Y) / 4=Z1-12.5Z > D1D2<=Z<=D1 orD1>=ZZ < D20707.5N / AN / AN / AN / A15012.5N / AN / AN / AN / A23017.55PC3PC2N / A340152.5PC3PC2N / A43017.55PC3PC2N / A520207.5PC3PC2PC1.566010N / AN / AN / AN / A

[0500] Table 22 shows examples of percentage of maximum E-UTRA / NR uplink transmission in PC1.5 EN-DC (23dBm(E-UTRA TDD)+29dBm(NR TDD)).

[0501] - if threshold(D) is indicated (e.g, D1=D, D2=D-12.5)

[0502] - if D > 12.5

[0503] Z < D2, PC1.5

[0504] D2<=Z <= D1, PC2

[0505] Z > D1, PC3

[0506] - else,

[0507] Z <= D1, PC2

[0508] Z > D1, PC3

[0509] - else,

[0510] Z <= 7.5, PC2

[0511] Z > 7.5, PC3

[0512] Here, 7.5 is a minimum value of Z in Table 22(E-UTRA TDD uplink downlink configuration '0'). Or the value can be set depending on E-UTRA TDD uplink downlink configuration.

[0513] 1.7 UE supporting a power class 1.5 for an EN-DC (26dBm(E-UTRA TDD)+29dBm(NR TDD)) is expplained.

[0514] For PC1.5(29dBm) UE in EN-DC(with E-UTRA TDD 26dBm and NR TDD 29dBm(2x26dBm)), with E-UTRA TDD uplink-downlink configuration of 'X', E-UTRA uplink transmission is expected with maximum Y% of subframes and NR uplink transmission is expected to maximum Z% symbols during any evaluation period of time which is larger than or equal to at least 10ms. Table 23 shows examples. E-UTRA TDD uplink-downlink configurations of 2 to 5 are assumed to be applied.

[0515] E-UTRA TDD Uplink-downlinkConfiguration (X)Percentage of maximum E-UTRA / NR uplink transmission during evaluation period (%)Supported EN-DC power class(Z:actual NR % of uplink transmission, D(D1,D2) :threshold)E-UTRA (26dBm)NR (29dBm) (Z=Z1 or Z2)Y=0~50Z1=0~25,(50-Y) / 2Z2=0~25,(25-Y) / 2=Z1-12.5Z > D1D2<=Z<=D1 orD1>=ZZ < D2070N / AN / AN / AN / AN / A150N / AN / AN / AN / AN / A23010N / APC3PC2N / A3405N / APC3PC2N / A43010N / APC3PC2N / A520152.5PC3PC2PC1.5660N / AN / AN / AN / AN / A

[0516] Table 23 shows examples of Percentage of maximum E-UTRA / NR uplink transmission in PC1.5 EN-DC (26dBm(E-UTRA TDD)+29dBm(NR TDD)).

[0517] - if threshold(D) is indicated (e.g, D1=D, D2=D-12.5)

[0518] - if D > 12.5

[0519] Z < D2, PC1.5

[0520] D2<=Z <= D1, PC2

[0521] Z > D1, PC3

[0522] - else,

[0523] Z <= D1, PC2

[0524] Z > D1, PC3

[0525] - else,

[0526] Z <= 5, PC2

[0527] Z > 5, PC3

[0528] Here, 5 is a minimum value of Z in Table 22(E-UTRA TDD uplink downlink configuration '3'). Or the value can be set depending on E-UTRA TDD uplink downlink configuration.

[0529] It is proposed to use [1.2 ~ 1.7] for UE maximum output power transmission for the corresponding PC2 or PC1.5 EN-DC with E-UTRA TDD band and NR TDD band.

[0530] Here, in Table 16 to Table 23, Y may be total of UL time within E-UTRA special subrame(s) during 10ms is one UL subframe.

[0531] 2. The second exmaple of the present disclosure

[0532] In the second example of the present discosure, [2 Inter-band EN-DC including PC1.5] is explained.

[0533] For PC1.5 UE or PC2 UE supporting inter band EN-DC in FR1, the UE may indicate(or transmit) capability information to network(NW). For example, the capability information includes one or more of information related to power class, information related to higher power limit(e.g., 'higherPowerLimitMRDC-r17'), information related to delta power class(e.g., ΔPPowerClass,EN-DC, ΔPPowerClass, C), information related to maximum uplink duty cycle, information related to dynamic power sharing, TDM pattern, simultaneous Rx / Tx, Tx diversity, dualPA-architecture, and UL MIMO full power mode if supporting UL MIMO. For example, the capability information may include information related to PC1.5 (e.g., based on using 'powerClass-v1610'), information related to power class 2 or power class 3 (e.g., based on using 'ue-PowerClass' or 'ue-PowerClassPerBandPerBC-r17'or 'ue-CA-PowerClass-N').

[0534] For reference, in the present disclosure, "indicate" may also be interpreted as "transmit".

[0535] NW may indicate one or more of the maximum total transmit power to be used by the UE across all carriers for EN-DC, the maximum total transmit power to be used by the UE across all carriers for E-UTRA, the maximum total transmit power to be used by the UE across all carriers for NR, and / or the maximum transmit power to be used by the UE each carrier in frequency range 1(FR1).

[0536] For example, the maximum total transmit power can be indicated with 'p-Max'. It corresponds to PEMAX, EN-DC, PLTE, PNR, PEMAX,cin UE configured transmission power. The maximum transmit power can be indicated with 'p-Max'. It corresponds to PEMAX, Cfor serving cell 'c' or serving cell carrier 'c' in UE configured transmission power.

[0537] 2.1 Inter-band EN-DC including PC1.5 : UE maximum output power may be explained.

[0538] For inter-band EN-DC of E-UTRA and NR in FR1, the following UE Power Classes define the maximum output power for any transmission bandwidth within the aggregated channel bandwidth. The maximum output power is measured as the sum of the maximum output power at each UE antenna connector. The period of measurement shall be at least one sub frame (1ms). UE maximum output power shall be measured over all component carriers from different bands. If each band has separate antenna connectors, maximum output power is measured as the sum of maximum output power at each UE antenna connector.

[0539] PC1.5-2TxTDD(E-UTRA) + TDD(NR)26dBm + 26dBmFDD(E-UTRA) + TDD(NR)26dBm + 26dBm

[0540] For PC1.5 supporting inter-band EN-DC with 2Tx, the cases shown in Table 24 are possible.

[0541] For example, PC1.5 based on 2Tx can be supported by TDD(E-UTRA) with maximum output power of 26dBm and TDD(NR) with maximum output power of 26dBm.

[0542] PC2-2TxFDD(E-UTRA) + FDD(NR)23dBm + 23dBmFDD(E-UTRA) + TDD(NR)23dBm + 23dBm23dBm + 26dBm26dBm + 23dBmTDD(E-UTRA) + TDD(NR)23dBm + 23dBm23dBm + 26dBm26dBm + 23dBm

[0543] For PC2 supporting inter-band EN-DC with 2Tx, the cases in Table 25 are possible.

[0544] The maximum output power may be specified in Table 26. Table 26 is one example for the maximum output power.

[0545] EN-DC Configuration(Example)Class 1.5 (dBm)Tolerance (dB)Class 2 (dBm)Tolerance(dB)Class 3 (dBm)Tolerance (dB)Class 4 (dBm)Tolerance (dB)DC_3A-n8A26(NOTE 5 applies)+2 / -323+2 / -3DC_3A-n78A26(NOTE 6 applies)+2 / -323+2 / -3DC_21A-n77A26(NOTE 6 applies)+2 / -323+2 / -3DC_39A_n79A29(NOTE 8 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_41A-n77ADC_41C-n77A29(NOTE 8 applies)+2 / -326(NOTE 6, 7 apply)+2 / -323+2 / -3NOTE 1: An uplink DC configuration in which at least one of the bands has NOTE 3 in Table 6.2.1-1 in TS 38.101-1 V18.4.0or NOTE 2 in Table 6.2.2-1 in TS 36.101 V18.4.0 is allowed to reduce the lower tolerance limit by 1.5 dB when the transmission bandwidths of at least one of the bands is confined within FUL_lowand FUL_low+ 4 MHz or FUL_high- 4 MHz and FUL_high.NOTE 2: PPowerClass, EN-DCis the maximum UE power specified without taking into account the toleranceNOTE 3: For inter-band EN-DC the maximum power requirement should apply to the total transmitted power over all component carriers (per UE).NOTE 4: Power Class 3 is the default power class unless otherwise stated.NOTE 5: The UE is not required to support PC2 within each individual cell group. (e.g., 23dBm+23dBm). Power class support within each individual cell group is signaled separately by the UE.NOTE 6: The UE supports PC3 within E-UTRA cell group, and　supports either PC3 or PC2 within NR cell group. (e.g., 23dBm+23dBm, or 23dBm+26dBm). Power class support within each individual cell group is signaled separately by the UE.NOTE 7: The UE supports either PC3 or PC2 within E-UTRA cell group, and　supports PC3 within NR cell group. (e.g., 23dBm+23dBm, or 26dBm+23dBm). Power class support within each individual cell group is signaled separately by the UE.NOTE 8: The UE supports PC2 within E-UTRA cell group, and　supports PC2 within NR cell group.(e.g., 26dBm+26dBm) Power class support within each individual cell group is signaled separately by the UE.NOTE 9: The UE that supports a PC2 uplink EN-DC configuration with　single carrier for each individual band and a composite of supporting PC3 within a TDD or FDD band and　PC2 within a second TDD band may signal a higherPowerLimitMRDC-r17 capability whereby the maximum output power indicated in the table may be exceeded in accordance with [2.2].NOTE 10: The UE that supports a PC3 uplink EN-DC configuration with a composite of supporting PC3 within a TDD or FDD band and　PC5 within a second band may signal a higherPowerLimitMRDC-r17 capability whereby the maximum output power indicated in the table may be exceeded in accordance with [2.2].

[0546] Table 26 shows examples of UE Power Class for inter-band EN-DC.

[0547] For example, for DC based on E-UTRA band 39 and NR band n79 (e.g., DC_39A_n79A), a UE may support PC 1.5. In this case, the UE may support maximum output power of 29dBm with tolerance being +2 / -3 dB.

[0548] 2.1.1 UE supporting a power class 3 for an EN-DC is explained.

[0549] If a UE supports a power class 3 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 26 and the supported power class enables the lower maximum output power or equal to that of the default power class:

[0550] - all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified in [2.2].

[0551] 2.1.2 UE supporting a power class 2 for an EN-DC (23dBm(E-UTRA TDD)+23dBm(NR TDD)) may be explained.

[0552] Below maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 in [2.1.2] is assumed to be configured based on PC3(23dBm) for E-UTRA TDD band and PC3(23dBm) for NR TDD band.

[0553] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 = {n20, n40, n50, n60, n70, n80, n90, n100}

[0554] If a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 26 and the supported power class enables higher maximum output power than that of the default power class and the UE supports a power class 3 for E-UTRA cell group and a power class 3 for NR cell group: (e.g., the UE supports power class 3 based on 23dBm + 23dBm)

[0555] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 30% (The exact evaluation period is no less than one radio frame. Here, 30% is a minimum value of Z in Table 16) (FIGS. 8a and 8b, A-3); or

[0556] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than Z% (The exact evaluation period is no less than one radio frame. Z is in Table 16). Herein, Z may be one of the following a) to f):

[0557] - a) Z = 30 for E-UTRA TDD Uplink-downlink Configuration X = 0; or

[0558] - b) Z = 40 for E-UTRA TDD Uplink-downlink Configuration X = 6; or

[0559] - c) Z = 50 for E-UTRA TDD Uplink-downlink Configuration X = 1; or

[0560] - d) Z = 60 for E-UTRA TDD Uplink-downlink Configuration X = 3; or

[0561] - e) Z = 70 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or

[0562] - f) Z = 80 for E-UTRA TDD Uplink-downlink Configuration X = 5;

[0563] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 8a and 8b, B-3); or

[0564] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0565] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0566] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 30% (The exact evaluation period is no less than one radio frame. Here, 30% is a minimum value of Z in Table 16) (FIGS. 8a and 8b, A-1 & A-2); or

[0567] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to Z% (The exact evaluation period is no less than one radio frame. For example, Z is based on Table 16. Z may be one of the following a) to f):

[0568] - a) Z = 30 for E-UTRA TDD Uplink-downlink Configuration X = 0; or

[0569] - b) Z = 40 for E-UTRA TDD Uplink-downlink Configuration X = 6; or

[0570] - c) Z = 50 for E-UTRA TDD Uplink-downlink Configuration X = 1; or

[0571] - d) Z = 60 for E-UTRA TDD Uplink-downlink Configuration X = 3; or

[0572] - e) Z = 70 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or

[0573] - f) Z = 80 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0574] - g) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 8a and 8b, B-1 & B-2); or

[0575] - vii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0576] - if one of v) to vii) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0577] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0578] FIGS. 8a and 8b show a first examples of average transmitted power for PC2 EN-DC according to an embodiment of the present disclosure.

[0579] FIGS. 8a and 8b show examples of PC2 EN-DC(23dBm(E-UTRA)+23dBm(NR)). Examples for average transmitted power for PC2 EN-DC with 23dBm(E-UTRA) and 23dBm(NR) are explained. Y is assumed as E-UTRA transmission percentage and Z is assumed as NR transmission percentage during evaluation period.

[0580] For example, R means maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16. For example, Here, R may be same as threshod D in [1.2]. In the present disclosure, R may be used as a threshold value.

[0581] When R is absent, cases in (A) may occur. When R is not absent, cases in (B) may occur.

[0582] In case (A-1), and (B-1), average transmitted power of Y and Z may be less than 23dBm during evaluation period. PC2 EN-DC can be configured.

[0583] In case (A-2), and (B-2), average transmitted power of Y and Z may be equal to 23dBm during evaluation period. PC2 EN-DC can be configured.

[0584] In case (A-3), and (B-3), average transmitted power of Y and Z may be bigger than 23dBm during evaluation period. PC3 EN-DC has to be configured.

[0585] For example, when R is absent, percentage of maximum E-UTRA uplink transmission (Y) during evaluation period may be 70%. Percentage of maximum NR uplink transmission (Z) during evaluation period may be compared with 30%. Cases (A-1) to (A-3) are based on percentage of maximum NR uplink transmission (Z) during evaluation period and 30%.

[0586] For example, when R is not absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be Y%. Percentage of maximum NR uplink transmission during evaluation period may be compared with Z. Cases (B-1) to (B-3) are based on percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period and Z.

[0587] Here, R has same meaning as threshod D in [1.2].

[0588] 2.1.3 UE supporting a power class 2 for an EN-DC (23dBm(E-UTRA TDD)+26dBm(NR TDD)) may be explained.

[0589] Below maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 in [2.1.3] is assumed to be configured based on PC3(23dBm) for E-UTRA TDD band and PC3(23dBm) for NR TDD band;

[0590] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 = {n20, n40, n50, n60, n70, n80, n90, n100}

[0591] Or, below '0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16' in [2.1.3] can be replaced by 'maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC3PC2' which is assumed to be configured based on PC3(23dBm) for E-UTRA TDD band and PC2(26dBm) for NR TDD band. UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 may be also replaced by UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC3PC2. This capability may be explained as one example.

[0592] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC3PC2 = {n10, n15, n20, n25, n30, n35, n40, n45, n50, n60, n70, n80, n90, n100} (here, n10 means 10%.); or

[0593] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC3PC2 = {n10, n20, n25, n30, n35, n40, n45, n50, n60, n70, n80, n90, n100}.

[0594] Here, if maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC3PC2 is not indicated, default value may be 15%.

[0595] If a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 26 and the supported power class enables higher maximum output power than that of the default power class and the UE supports a power class 3 for E-UTRA cell group and a power class 2 for NR cell group: (e.g., the UE supports power class 2 based on 23dBm + 26dBm)

[0596] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 15% (The exact evaluation period is no less than one radio frame. Here, 15% is a minimum value of Z in Table 17) (FIGS. 9a and 9b, C-3); or

[0597] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than Z% (The exact evaluation period is no less than one radio frame. Here, Z may be based on Table 17); or

[0598] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 9a and 9b, D-3); or

[0599] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0600] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0601] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 15% (The exact evaluation period is no less than one radio frame. Here, 15% is a minimum value of Z in Table 17) (FIGS. 9a and 9b, C-1 & C-2); or

[0602] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to Z% (The exact evaluation period is no less than one radio frame. Here, Z is in Table 17); or

[0603] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 9a and 9b, D-1 & D-2); or

[0604] - viii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2(Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0605] - if one of v) to viii) is satisfied, all requirements for the power class 2 to the supported power class are applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4.

[0606] FIGS. 9a and 9b shows examples of PC2 EN-DC(23dBm(E-UTRA)+26dBm(NR)).

[0607] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0608] FIGS. 9a and 9b show a second examples of average transmitted power for PC2 EN-DC according to an embodiment of the present disclosure.

[0609] FIGS. 9a and 9b show examples of average transmitted power for PC2 EN-DC with 23dBm(E-UTRA) and 26dBm(NR). Y is assumed as E-UTRA transmission percentage and Z is assumed as NR transmission percentage during evaluation period.

[0610] For example, R means maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16. W means maxUplinkDutyCycle-PC2-FR1. When R is absent, cases in (C) may occur. When R is not absent, cases in (D) may occur.

[0611] In case (C-1), and (D-1), average transmitted power of Y and Z may be less than 23dBm during evaluation period. PC2 EN-DC can be configured.

[0612] In case (C-2), and (D-2), average transmitted power of Y and Z may be equal to 23dBm during evaluation period. PC2 EN-DC can be configured.

[0613] In case (C-3), and (D-3), average transmitted power of Y and Z may be bigger than 23dBm during evaluation period. PC3 EN-DC has to be configured.

[0614] For example, when R is absent, percentage of maximum E-UTRA uplink transmission (Y) during evaluation period may be 70%. Percentage of maximum NR uplink transmission (Z) during evaluation period may be compared with 15%, because the maximum output power for NR TDD is 26dBm. Cases (C-1) to (C-3) are based on percentage of maximum NR uplink transmission during evaluation period and 15%.

[0615] For example, when R is not absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be Y%. Percentage of maximum NR uplink transmission during evaluation period may be compared with 0.5*Z. Cases (D-1) to (D-3) are based on percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period and 0.5*Z.

[0616] Or,

[0617] If the UE indicates higherPowerLimitMRDC-r17 for an eligible EN-DC configuration as specified in Table 26,

[0618] - if a UE supports PPowerClass,EN-DCfor the band combination, Band A and Band B in Table 26, with PPowerClass,Afor Band A and PPowerClass,Bfor Band B, to solve SAR in inter-band EN-DC, the capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 can be multiplied by K. It is calculated by (K=1 / ΔphigherPowerLimit,EN-DC). ΔphigherPowerLimit, EN-DCmay be based on the following description: ΔphigherPowerLimit, EN-DCis the linear value of ΔPhigherPowerLimit, EN-DCwhich is given by {10 log10(pPowerClass,A+ pPowerClass,EN-DC,B) - PPowerClass,EN-DC).

[0619] For example, if a UE supports power class 2 for the band combination, Band A and Band B, with 23dBm for Band A and 26dBm for Band B, K = 0.67

[0620] From these,

[0621] If a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 26 and the supported power class enables higher maximum output power than that of the default power class and the UE supports a power class 3 for E-UTRA cell group and a power class 2 for NR cell group: (e.g., the UE supports the power class 2 EN-DC based on 23dBm (E-UTRA TDD) + 26dBm (NR TDD)); and if the UE indicates higherPowerLimitMRDC-r17, the supported power class ( PPowerClass,EN-DC)enables the higher maximum output power than the power class 2, K is 0.67 for 23dBm+26dBm, the followings apply:

[0622] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*15% (The exact evaluation period is no less than one radio frame. Here, 15% is a minimum value of Z in Table 17) (FIGS. 9a and 9b, C-3); or

[0623] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*Z% (The exact evaluation period is no less than one radio frame. Here, Z is in Table 17); or

[0624] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 0.5*K*maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 9a and 9b, D-3); or

[0625] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0626] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4;

[0627] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to K*15% (The exact evaluation period is no less than one radio frame. Here, 15% is a minimum value of Z in Table 17) (FIGS. 9a and 9b, C-1 & C-2); or

[0628] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to K*Z% (The exact evaluation period is no less than one radio frame. Here, Z is in Table 17); or

[0629] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 0.5*K*maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 9a and 9b, D-1 & D-2); or

[0630] - viii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0631] - if one of v) to viii) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4.

[0632] 2.1.4 UE supporting a power class 2 for an EN-DC (26dBm(E-UTRA TDD)+23dBm(NR TDD)) may be explained.

[0633] Below maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 in [2.1.4] is assumed to be configured based on PC2(26dBm) for E-UTRA TDD band and PC3(23dBm) for NR TDD band. UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is explained as one example;

[0634] For example, maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for NR uplink transmission under different EUTRA TDD uplink-downlink configurations so as to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies. This field is only applicable for inter-band TDD+TDD EN-DC power class 2 UE with 26dBm (E-UTRA TDD) and 23dBm(NR TDD)

[0635] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 = {n10, n20, n30, n40, n50, n60, n70, n80, n90, n100}; or

[0636] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 = {n10, n30, n40, n50, n60, n70, n80, n90, n100}.

[0637] If maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is not indicated, default value is 20%.

[0638] If a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 26 and the supported power class enables higher maximum output power than that of the default power class and the UE supports a power class 2 for E-UTRA cell group and a power class 3 for NR cell group: (e.g., the UE supports the power class 2 based on 26dBm + 23dBm)

[0639] - i)if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 20% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 18) and 20% is a minimum value of Z in the configurations) (FIGS. 10a and 10b, C1-3); or

[0640] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than Z% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD Uplink-downlink Configuration 2, 3, 4, and 5 in Table 18 are applicable). For example, the following values can be used for Z: Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 40 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 60 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0641] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 10a and 10b, D1-3); or

[0642] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0643] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4;

[0644] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 20% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 18) and 20% is a minimum value of Z in the configurations) (FIGS. 10a and 10b, C1-1 & C1-2); or

[0645] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to Z% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD Uplink-downlink Configuration 2, 3, 4, and 5 in Table 18 are applicable). For example, the following values can be used for Z; Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 40 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 60 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0646] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 10a and 10b, D1-1 & D1-2); or

[0647] - viii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0648] - if one of v) to viii) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4;

[0649] FIGS. 10a and 10b shows examples of PC2 EN-DC(26dBm(E-UTRA)+23dBm(NR)).

[0650] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0651] FIGS. 10a and 10b show a third examples of average transmitted power for PC2 EN-DC according to an embodiment of the present disclosure.

[0652] FIGS. 10a and 10b shows examples of Average transmitted power for PC2 EN-DC with 26dBm(E-UTRA) and 23dBm(NR).

[0653] For example, R means maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16. W means maxUplinkDutyCycle-PC2-FR1. When R is absent, cases in (C1) may occur. When R is not absent, cases in (D1) may occur.

[0654] In case (C1-1), and (D1-1), average transmitted power may be less than 23dBm during evaluation period. In case (C1-2), and (D1-2), average transmitted power may be equal to 23dBm during evaluation period. In case (C1-3), and (D1-3), average transmitted power may be bigger than 23dBm during evaluation period.

[0655] For example, when R is absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be 40% because the maximum output power for E-UTRA TDD is 26dBm. Percentage of maximum NR uplink transmission during evaluation period may be compared with 20%. Cases (C1-1) to (C1-3) are based on percentage of maximum NR uplink transmission during evaluation period and 20%.

[0656] For example, when R is not absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be Y%. Percentage of maximum NR uplink transmission during evaluation period may be compared with Z. Cases (D1-1) to (D1-3) are based on percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period and Z.

[0657] Or,

[0658] If the UE indicates higherPowerLimitMRDC-r17 for an eligible EN-DC configuration as specified in Table 26,

[0659] - if a UE supports PPowerClass,EN-DCfor the band combination, Band A and Band B in Table 26, with PPowerClass,Afor Band A and PPowerClass,Bfor Band B, to solve SAR in inter-band EN-DC, the capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is multiplied by K. It is calculated by (K=1 / ΔphigherPowerLimit, EN-DC). Herein, ΔphigherPowerLimit, EN-DCis the linear value of ΔPhigherPowerLimit, EN-DCwhich is given by {10 log10(pPowerClass,A+ pPowerClass, B) - PPowerClass,EN-DC).

[0660] For example, if a UE supports power class 2 for the band combination, Band A and Band B, with 26dBm for Band A and 23dBm for Band B, K = 0.67.

[0661] If a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 26 and the supported power class enables higher maximum output power than that of the default power class and the UE supports a power class 2 for E-UTRA cell group and a power class 3 for NR cell group: (e.g., the UE supports the power class 2 based on 26dBm + 23dBm); and if the UE indicates higherPowerLimitMRDC-r17, the supported power class ( PPowerClass,EN-DC)enables the higher maximum output power than the power class 2, (e.g., K may be 0.67 for 26dBm+23dBm):

[0662] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*20% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 18) and 20% is a minimum value of Z in the configurations) (FIGS. 10a and 10b, C1-3); or

[0663] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*Z% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD Uplink-downlink Configuration 2, 3, 4, and 5 in Table 18 are applicable). For exmale, the following values may be used for Z: Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 40 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 60 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0664] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 10a and 10b, D1-3); or

[0665] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0666] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4;

[0667] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to K*20% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 18) and 20% is a minimum value of Z in the configurations) (FIGS. 10a and 10b, C1-1 & C1-2); or

[0668] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to K*Z% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD Uplink-downlink Configuration 2, 3, 4, and 5 in Table 18 are applicable). For example, the following values may be used for Z; Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 40 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 60 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0669] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to K*maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC2PC3 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 10a and 10b, D1-1 & D1-2); or

[0670] - viii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0671] - if one of v) to viii) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0.

[0672] 2.1.5 UE supporting a power class 1.5 for an EN-DC (26dBm(E-UTRA TDD)+26dBm(NR TDD)) is explained.

[0673] Below maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 in [2.1.5] is assumed to be configured based on PC2(26dBm) for E-UTRA TDD band and PC2(26dBm) for NR TDD band;

[0674] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 = {n20, n40, n50, n60, n70, n80, n90, n100}

[0675] Or, below '0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16' in [2.1.5] is replaced by 'maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC2' which is assumed to be configured based on PC2(26dBm) for E-UTRA TDD band and PC2(26dBm) for NR TDD band. UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is also replaced by UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC2. This capability may be explained as one example;

[0676] - maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC2 = {n5, n10, n15, n20, n25, n30, n35, n40, n45, n50, n60, n70, n80, n90, n100} or (here, n10 means 10%.); or

[0677] - maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC2 = {n5, n15, n20, n25, n30, n35, n40, n45, n50, n60, n70, n80, n90, n100}

[0678] For example, if maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC2 is not indicated, default value is 10%.

[0679] If a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 26 and the supported power class enables higher maximum output power than that of the default power class. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 19): (e.g., the UE may support the power class 1.5 based on 26dBm + 26dBm)

[0680] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 10% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 19)) (FIGS. 11a and 11b, E-3 is for Z=10); or

[0681] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than Z% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD Uplink-downlink Configuration 2, 3, 4, and 5 in Table 19 are applicable.). For example, the following values may be used for Z: Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 30 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0682] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 11a and 11b, F-3); or

[0683] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0684] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0685] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 2, 3 and 4(The exact evaluation period is no less than one radio frame.) (FIGS. 11a and 11b, E-1 & E-2 is for Z=10). For example, the following values may be used for Z: Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or

[0686] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (Z-25)% but less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.). For example, the following values may be used for Z: Z = 30 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0687] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is less than or equal to 25%(The exact evaluation period is no less than one radio frame) (FIGS. 11a and 11b, F-3); or

[0688] - viii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 25) but less than or equal to 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 25% (The exact evaluation period is no less than one radio frame) ; or

[0689] - ix) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0690] - if one of v) to ix) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0691] - x) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (Z-25)% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.). For example, Z = 30 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0692] - xi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 25) as defined in TS38.331 V18.0.0 when 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 25% (The exact evaluation period is no less than one radio frame) ; or

[0693] - xii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 1.5 or lower than the power class 1.5 (Here, 'lower than the power class 1.5' means that the UE supports the maximum output power being larger than 26dBm of power class 2 and lower than 29dBm of power class 1.5);

[0694] - if one of x) to xii) is satisfied, all requirements for the power class 1.5 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0.

[0695] FIGS. 11a and 11b shows examples of PC1.5 EN-DC (26dBm(E-UTRA)+26dBm(NR)).

[0696] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0697] FIGS. 11a and 11b show a first examples of average transmitted power for PC1.5 EN-DC according to an embodiment of the present disclosure.

[0698] FIGS. 11a and 11b show examples of Average transmitted power for PC1.5 EN-DC with 26dBm(E-UTRA) and 26dBm(NR).

[0699] For example, R means maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16. W means maxUplinkDutyCycle-PC2-FR1. When R is absent, cases in (E) may occur. When R is not absent, cases in (F) may occur.

[0700] In case (E-1), and (F-1), average transmitted power may be less than 23dBm during evaluation period. In case (E-2), and (F-2), average transmitted power may be equal to 23dBm during evaluation period. In case (E-3), and (F-3), average transmitted power may be bigger than 23dBm during evaluation period.

[0701] For example, when R is absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be 40% because the maximum output power for E-UTRA TDD is 26dBm. Percentage of maximum NR uplink transmission during evaluation period may be compared with 10%. Cases (E-1) to (E-3) are based on percentage of maximum NR uplink transmission during evaluation period and 20%.

[0702] For example, when R is not absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be Y%. Percentage of maximum NR uplink transmission during evaluation period may be compared with 0.5*Z. Cases (F-1) to (F-3) are based on percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period and 0.5*Z.

[0703] 2.2 Inter-band EN-DC including PC1.5 : Configured transmitted power is explained.

[0704] For inter-band dual connectivity with one uplink serving cell or more than one uplink serving cells configured for intra-band UL CA on the E-UTRA Cell Group (CG) and one uplink serving cell on the NR CG or more than one uplink serving cells configured for intra-band UL CA, the UE is allowed to set its configured maximum output power PCMAX,c(i),ifor serving cell c(i) of CG i, i = 1,2, and its total configured maximum transmission power for EN-DC operation, = 10log10( ) with as specified in clause 7.6 of TS 38.213 V18.1.0.

[0705] For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the E-UTRA CG, the PCMAXapplies to the entire E-UTRA CG.

[0706] For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the NR CG, the PCMAX applies to the entire NR CG. For a UE configured with EN-DC and serving cell frame structure type 1, if the UE is configured with subframeAssignment-r15 for the serving cell and E-UTRA Pcell is FDD, the UE is not expected to be configured with more than one serving cells in the uplink.

[0707] The configured maximum output power PCMAX_ E-UTRA,c(p) in sub-frame p for the configured E-UTRA uplink carrier(s) may be set within the bounds:

[0708] PCMAX_L_ E-UTRA,c(p) ≤ PCMAX_ E-UTRA,c(p) ≤ PCMAXH _ E-UTRA,c(p)

[0709] where PCMAX_L_ E-UTRA,candPCMAXH _ E-UTRA,care the limits for a serving cell c as specified in TS 36.101 V18.4.0 clause 6.2.5 modified by PLTEas follows:

[0710] PCMAX_L_ E-UTRA,cMIN { PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), MIN(PEMAX,c, PLTE) - ΔtC_ E-UTRA, c, (PPowerClass,E-UTRA- ΔPPowerClass,E-UTRA) - MAX(MPRc+ A-MPRc+ ΔTIB,c+ ΔtC_ E-UTRA, c+ ΔTProSe, P-MPRc)}

[0711] PCMAXH _ E-UTRA,c= MIN {PEMAX,c, PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), PLTE, PPowerClass,E-UTRA- ΔPPowerClass,E-UTRA}

[0712] For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the E-UTRA CG, PCMAX_L_ E-UTRA,candPCMAXH _ E-UTRA,care the limits for the E-UTRA CG as specified in TS 36.101 V18.4.0　clause　6.2.5A modified by PLTEas follows:

[0713] PCMAX_L_ E-UTRA,c= MIN{10 log10∑pEMAX,c- ΔTC, (PPowerClass,E-UTRA- ΔPPowerClass,E-UTRA) - MAX(MPR + A-MPR + ΔTIB,c+ ΔTC+ ΔTProSe, P-MPR), PLTE, PPowerClass,EN-DC}

[0714] PCMAX_H_E-UTRA,c= MIN{10 log10∑ pEMAX,c, PPowerClass,E-UTRA, PLTE, PPowerClass,EN-DC}

[0715] The configured maximum output power PCMAX,f,c,NR(q) in physical-channel q for the configured NR carrier shall be set within the bounds:

[0716] PCMAX_L,f,c,NR(q) ≤ PCMAX,f,c,NR(q) ≤ PCMAX_H,f,c,NR(q)

[0717] where PCMAX_L,f,c,NRandPCMAX_H,f,c,NRare the limits for a serving cell c as specified in clause 6.2.4 of TS 38.101-1 modified as follows:

[0718] PCMAX_L,f,c,NRMIN { PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), MIN(PEMAX,c, PNR) - ΔTC_NR, c, (PPowerClass,NR- ΔPPowerClass,NR) - MAX(MAX(MPRc, A-MPRc)+ ΔTIB,c+ ΔTC_NR, c+ ΔTRxSRS, P-MPRc) }

[0719] PCMAX_H,f,c,NR= MIN {PEMAX,c, PEMAX, EN-DC, (PPowerClass, EN-DC- ΔPPowerClass,EN-DC), PNR, PPowerClass,NR- ΔPPowerClass,NR}

[0720] For EN-DC with more than one uplink serving cells configured for intra-band UL CA on the NR CG, PCMAX_L,f,c, NRandPCMAX_H,f,c, NRare the limits for the NR CG as specified in [TS38.101-1] subclause 6.2A.4 modified by PNRas follows:

[0721] PCMAX_L,f,c,NR= MIN{10 log10∑ pEMAX,c- ΔTC, PEMAX,CA, PPowerClass,NR- MAX(MPR + A-MPR + ΔTIB,c+ ΔT_NR ,C+ ΔTRxSRS, P-MPR), PNR, PPowerClass,EN-DC}

[0722] PCMAX_H,f,c,NR= MIN{10 log10∑ pEMAX,c, PEMAX,CA, PPowerClass,NR, PNR, PPowerClass,EN-DC}

[0723] where

[0724] - PEMAX,EN-DCis the value given by the field p-maxUE-FR1 of the RRCConnectionReconfiguration-v1530 IE as defined in TS 36.331 V18.0.0. If the UE indicates(e.g., transmits) higherPowerLimitMRDC-r17, PEMAX,EN-DCis increased by at least ΔPhigherPowerLimit, EN-DCin [2.1]. ;

[0725] - If more than one E-UTRA uplink serving cell is configured as intra-band UL CA in the E-UTRA CG, PPowerClassrefers to the maximum output power of the E-UTRA intra-band CA power class given in Table 6.2.2A-1 of TS 36.101 V18.4.0　,

[0726] - If more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG, PPowerClassrefers to the maximum output power of the NR intra-band CA power class given in sub clause 6.2A.1 of [TS38.101-1],

[0727] - PLTEis the value given by the field p-maxEUTRA-r15 of the RRCConnectionReconfiguration-v1510 IE as defined in TS 36.331 V18.0.0;

[0728] - If more than one E-UTRA uplink serving cell is configured as intra-band UL CA in the E-UTRA CG, MPRc= MPR and A-MPRc= A-MPR with MPR and A-MPR specified in clause 6.2.3A and clause 6.2.4A of TS 36.101 V18.4.0　respectively. There is one power management term for the UE, denoted P-MPR, and P-MPRc= P-MPR. PCMAX_ E-UTRA,cis calculated under the assumption that the transmit power is increased by the same amount in dB on all component carriers within the E-UTRA CG.

[0729] - If more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG, MPRcand A-MPRcare determined by subclause 6.2.2 of [TS38.101-1]. There is one power management term for the UE, denoted P-MPR, and P-MPRc= P-MPR.

[0730] - PNRis the value given by the field p-NR-FR1 of the PhysicalCellGroupConfig IE as defined in TS　38.331 V18.0.0　;

[0731] - Δtc_E-UTRA, c= 1.5 dB when NOTE 2 in Table 6.2.2-1 in TS 36.101 V18.4.0 applies for a serving cell c, otherwise ΔTC_ E-UTRA,c= 0 dB;

[0732] - ΔTC_NR,c= 1.5dB when NOTE 3 in Table 6.2.1-1 in TS 38.101-1 applies for a serving cell c, otherwise ΔTC_NR,c= 0 dB; ΔTC_NR,Cis the highest value ΔTC_NR,Camong all serving cells c if more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG;

[0733] - PPowerClass, EN-DCis the nominal UE power class indicated by PowerClass defined in clause 6.2B.1.3 for inter-band EN-DC; if the UE indicates higherPowerLimitMRDC-r17 and ΔPPowerClass,EN-DC= 0, PPowerClass,EN-DCis replaced by the sum of the linear powers of PPowerClass,NRand PPowerClass,E-UTRAconverted to dB;

[0734] - For a power class 2 capable EN-DC UE, ΔPPowerClass,EN-DCis 3 dB when requirements of default power class had been applied as specified in [2.1]; otherwise ΔPPowerClass,EN-DC= 0 dB;

[0735] - For a power class 1.5 capable EN-DC UE, ΔPPowerClass,EN-DCis 6 dB when requirements of default power class had been applied as specified in [2.1]; and ΔPPowerClass,EN-DCis 3dB when the requirements of power class 2 are applied as specified in [2.1]; otherwise ΔPPowerClass,EN-DC= 0 dB;

[0736] - NOTE: capability inforamtion related to ΔPPowerClass,EN-DCis used to report ΔPPowerClass,EN-DCwhen the network configures the UE with the reporting and the reporting is triggered only by uplink duty cycle exceedance or by return to the powerClass after the duty cycle exceedance.

[0737] - PPowerClass,NRis the nominal UE power of the power class indicated by ue-PowerClass that the UE supports for the NR band and for NR intra-band UL CA of the EN-DC combination as defined in clause 6.2.1 or 6.2A1.1 of 38.101-1; in case IE powerClassNRPart-r16 as defined in TS 38.331 V18.0.0 is indicated, PPowerClass,NRshould use that value instead;

[0738] - ΔPPowerClass,NRis 3 dB or 0 dB according to clause 6.2.4 of TS 38.101-1 for a UE that supports power class 2 in the NR band of the EN-DC combination as defined in clause 6.2.1 of TS 38.101-1 ;

[0739] - ΔPPowerClass,NRis 6dB or 3 dB or 0 dB according to clause 6.2.4 of TS 38.101-1 for a UE that supports power class 1.5 in the NR band of the EN-DC combination as defined in clause 6.2.1 of TS 38.101-1 ;

[0740] - PPowerClass,E-UTRAis the nominal UE power of the power class indicated by ue-PowerClass-N-r13 that the UE supports for the E-UTRA band or indicated by ue-CA-PowerClass-N E-UTRA intra-band UL CA of the EN-DC combination as defined in clause 6.2.2 or 6.2.2A of 36.101;

[0741] - ΔPPowerClass,E-UTRAis 3 dB or 0 dB according to clause 6.2.5 of TS 36.101 V18.4.0 for a UE that supports power class 2 in the E-UTRA band of the EN-DC combination as defined in clause 6.2.2 of TS 36.101 V18.4.0;

[0742] - ΔTIB,cspecified in clause 6.2B.4.2.3 for EN-DC, the individual Power Class defined in table 6.2B.1.3 and any other additional power reductions parameters specified in clauses 6.2B.2 and 6.2B.3for EN-DC are applicable to PCMAX_ E-UTRA,cand PCMAX,f,c,NRevaluations.

[0743] - ΔTRxSRSis the highest value among all serving cells c.

[0744] If the transmissions from NR and E-UTRA do not overlap, then the complete clauses for configured transmitted power for E-UTRA and NR respectively from their own specifications apply with the modifications specified above. The lower value between PPowerClass, EN-DCor PEMAX, EN-DCshall not be exceeded at any time by UE.

[0745] = 10log10( ) with the configured maximum transmission power for EN-DC operation as specified in clause 7.6 of TS 38.213 V18.1.0.

[0746] The total configured maximum transmission power for both synchronous and non-synchronous operation is

[0747] = MIN { PEMAX, EN-DC,PPowerClass, EN-DC- ΔPPowerClass,EN-DC}

[0748] If the UE does not support dynamic power sharing,

[0749] = MIN { PEMAX, EN-DC,PPowerClass, EN-DC- ΔPPowerClass,EN-DC} + 0.3 dB

[0750] If the EN-DC UE does not support dynamic power sharing, then the complete clauses for configured transmitted power for E-UTRA and NR respectively from their own specifications TS 36.101 V18.4.0 and TS 38.101-1 respectively apply with the modifications specified above and applies.

[0751] When a UE supporting dynamic sharing is configured for overlapping E-UTRA uplink and NR uplink transmissions, the UE can set its configured maximum output power PCMAX_ E-UTRA,cand PCMAX,f,c,NRfor the configured E-UTRA and NR uplink carriers, respectively, and its configured maximum transmission power for EN-DC operation, , as specified above.

[0752] The measured total maximum output power PUMAXover both CGs / RATs, measured over the transmission reference time duration is

[0753] PUMAX= 10 log10[pUMAX,c,E-UTRA+ pUMAX,c,NR],

[0754] where pUMAX,c,E-UTRAand pUMAX,c,NRdenotes the measured output power of serving cell c for E-UTRA and NR respectively, expressed in linear scale.

[0755] The measured total configured maximum output power PUMAXshall be within the following bounds:

[0756] PCMAX_L-TLOW(PCMAX_L) ≤ PUMAX≤ PCMAX_H+ THIGH(PCMAX_H)

[0757] with the tolerances TLOW(PCMAX_H) and THIGH(PCMAX_H) for applicable values of PCMAXspecified in Table 28.

[0758] When an UL subframe transmission p from E-UTRA overlap with a physical-channel q from the NR, then for PUMAXevaluation, the E-UTRA subframe p is taken as reference period TREFand always considered as the reference measurement duration and the following rules are applicable.

[0759] TREFand Tevalare specified in Table 27 when same or different subframe and physical-channel durations are used in aggregated carriers. The lesser of PPowerClass ,EN-DCand PEMAX,EN-DCshall not be exceeded by the UE during any evaluation period of time where PPowerClass ,EN-DCis replaced by the sum of the linear powers of PPowerClass,NRand PPowerClass,E-UTRAconverted to dB if the UE indicates higherPowerLimitMRDC-r17.

[0760] transmission durationTREFTevalDifferent transmission duration in different RAT carriersE-UTRA Subframe on all aggregated cells of E-UTRAMin(Tno_hopping, Physical Channel Length) on all aggregated cells of NR

[0761] Table 27 shows examples of PCMAXevaluation window.

[0762] For each TREF, the PCMAX_His evaluated per Tevaland given by the maximum value over the transmission(s) within the Tevalas follows:

[0763] PCMAX_H= MAX { PCMAX_ EN-DC _H(p,q) , PCMAX_ EN-DC _H(p,q+1), ... , PCMAX_EN-DC_H(p,q+n) }

[0764] where PCMAX_EN-DC_Hare the applicable upper limits for each overlapping scheduling unit pairs (p,q) , (p, q+1) , up to (p, q+n) for each applicable Tevalduration, where q+n is the last NR UL physical-channel overlapping with E-UTRA subframe p.

[0765] While PCMAX_Lis computed as follows:

[0766] PCMAX_L= MIN { PCMAX_EN-DC_L(p,q) , PCMAX_ EN-DC _L(p,q+1), ... , PCMAX_EN-DC_L(p,q+n)}

[0767] where PCMAX_EN-DC_Lare the applicable lower limits for each overlapping scheduling unit pairs (p,q) , (p, q+1) , up to (p, q+n) for each applicable Tevalduration, where q+n is the last NR UL physical-channel overlapping with E-UTRA subframe p,

[0768] With

[0769] PCMAX_EN-DC_H(p,q) = MIN {10 log10[pCMAX_H_E-UTRA,c(p) + pCMAX_H,f,c,NR(q)], PEMAX,EN-DC,PPowerClass, EN-DC}

[0770] And:

[0771] a= 10 log10[pCMAX_ E-UTRA,c(p) +pCMAX,f,c,NR(q) ] >

[0772] b= 10 log10[pCMAX_ E-UTRA,c(p) +pCMAX,f,c,NR(q) / X_scale] >

[0773] If a= FALSE

[0774] PCMAX_ EN-DC _L(p,q) = MIN {10 log10[pCMAXL _ E-UTRA,c(p) + pCMAXL,f,c,NR(q)], PEMAX, EN-DC,PPowerClass, EN-DC}

[0775] ELSE If (a=TRUE) AND (b=FALSE)

[0776] PCMAX_EN-DC_L(p,q) = MIN {10 log10[pCMAX_L_E-UTRA,c(p) + pCMAXL,f,c,NR(q) / X_scale ], PEMAX, EN-DC,PPowerClass, EN-DC}

[0777] ELSE If b= TRUE

[0778] PCMAX_EN-DC_L(p,q) = MIN {10 log10[pCMAX_L_E-UTRA,c(p) ], PEMAX, EN-DC,PPowerClass, EN-DC}

[0779] where

[0780] - pCMAX_H_E-UTRA,c(p) is the E-UTRA higher limit of the maximum configured power expressed in linear scale;

[0781] - pCMAX_L,f,c,NR(q) is the NR higher limit of the maximum configured power expressed in linear scale;

[0782] - pCMAX_L_E-UTRA,c(p) is the E-UTRA lower limit of the maximum configured power expressed in linear scale;

[0783] - pCMAX_L,f,c,NR(q) is the NR lower limit of the maximum configured power expressed in linear scale;

[0784] - PPowerClass, EN-DCis defined in clause 6.2B.1.3-1 for inter-band EN-DC; if the UE indicates higherPowerLimitMRDC-r17, PPowerClass,EN-DCis replaced by the sum of the linear powers of PPowerClass,NRand PPowerClass,E-UTRAconverted to dB;

[0785] - X_scale is the linear value of X dB which is configured by RRC and can only take values [0 , 6]

[0786] - pCMAX_E-UTRA,c(p) is the linear value of PCMAX_E-UTRA,c(p), the configured max power for E-UTRA. If more than one E-UTRA uplink serving cell is configured as intra-band UL CA in the E-UTRA CG, PCMAX_E-UTRA,c(p) will be replaced by PCMAX(p) which is the configured maximum power for the entire E-UTRA CG.

[0787] - pCMAX,f,c,NR(q) is the linear value of PCMAX,f,c,NR(q), the configured max power of NR, If more than one NR uplink serving cell is configured as intra-band UL CA in the NR CG, PCMAX_ NR,c(q) will be replaced by PCMAX(q) which is the configured maximum power for the entire NR CG.

[0788] PCMAX(dBm)ToleranceTLOW(PCMAX_L) (dB)ToleranceTHIGH(PCMAX_H) (dB)23 ≤ PCMAX ≤333.02.022 ≤PCMAX< 235.02.021 ≤PCMAX< 225.03.020 ≤PCMAX< 216.04.016 ≤PCMAX< 205.011 ≤PCMAX< 166.0-40 ≤PCMAX< 117.0NOTE 1: For UEs not indicating support of dynamic power sharing, the upper tolerance Thighshall be reduced by 0.3 dB for P ≥ 20 dBm.

[0789] Table 28 shows examples of PCMAXtolerance for Dual Connectivity E-UTRA-NR

[0790] When E-UTRA and NR transmissions overlap and the condition (If (a=TRUE) AND (b=FALSE)) is met, SCG shall be transmitted and the following supplementary minimum requirement apply for the measured SCG power, PUMAX,f,c,NR(q), under nominal conditions.

[0791] 10log(pCMAX_L,f,c,NR(q) / X_scale) - TLOW(10log(pCMAX_L,f,c,NR(q) / X_scale) )} ≤ PUMAX,f,c,NR(q) ≤ 10log(pCMAXH, f,c,NR(q)) + THIGH(10log(pCMAXH, f,c,NR(q))).

[0792] with the tolerances TLOWand THIGHfor applicable values of PCMAXspecified in Table 28.

[0793] 2.3 Inter-band EN-DC including PC1.5 : Behaviour of UE configured transmitted power is explained.

[0794] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0795] FIG. 12 illustrates an example of an operation according to an embodiment of the present disclosure.

[0796] FIG. 12 shows an example of a behavior of UE supporting EN-DC and supporting PC 1.5 or PC2. For exmaple, UE configured transmission power for supporting inter band EN-DC including PC1.5 and / or PC2 and the requirements to be tested may be explained.

[0797] The UE may support PC 1.5 and / or PC2. The UE may be configured with EN-DC. The UE may receive information related to EN-DC from a base station.

[0798] FIG. 12 describes exapmles of operations of the UE, the base station (e.g., gNB), and a test equipment. Operations are related to inter band EN-DC for PC 1.5 UE or PC2 UE.

[0799] In step S1201, the UE may transmit UE capability information.

[0800] For example, the UE capability infomration may include one or more of ue-PowerClass, PowerClass, ue-PowerClassPerBandperBC, powerClassNRPart-r16 , higherPowerLimitMRDC-r17, maxUplinkDutyCycle-PC2-FR1, maxUplinkDutyCycle-PC1dot5-FR1, maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16, maxUplinkDutyCycle-interBandENDC-FDD-TDD-PC2-r16, Dynamic power sharing, ulFullPowerMode, Tx diversity, and / or dualPA-architecture.

[0801] For example, ue-PowerClass may include information related to power class supported by the UE.

[0802] For example, PowerClass may indicate power class the UE supports when operating according to this band combination.

[0803] For example, ue-PowerClassPerBandperBC may indicate the UE power class per band per band combination.

[0804] For example, powerClassNRPart-r16 may indicate NR part power class the UE supports when operating according to this band combination. This field only applies for MR-DC(multi-rat DC) BCs containing only single CC or intra-band CA in NR side.

[0805] For example, higherPowerLimitMRDC-r17 may indicate whether UE supports increase in maximum output power above the power class indication for inter-band UL (NG)EN-DC band combinations.

[0806] For example, maxUplinkDutyCycle-PC2-FR1 may indicate the maximum percentage of symbols during a certain evaluation period that can be scheduled for uplink transmission to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies.

[0807] For example, maxUplinkDutyCycle-PC1dot5-FR1(or maxUplinkDutyCycle-PC1dot5-MPE-FR1-r16) may indicate Indicates the maximum percentage of symbols during a certain evaluation period that can be scheduled for uplink transmission to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies.

[0808] For example, maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 may indicate the maximum percentage of symbols during a certain evaluation period that can be scheduled for NR uplink transmission under different EUTRA TDD uplink-downlink configurations so as to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies

[0809] For example, maxUplinkDutyCycle-interBandENDC-FDD-TDD-PC2-r16 may indicate the maximum percentage of symbols during a certain evaluation period that can be scheduled for NR uplink transmission and EUTRA FDD uplink transmission so as to ensure compliance with applicable electromagnetic energy absorption requirements provided by regulatory bodies.

[0810] For example, Dynamic power sharing may indicate whether the UE supports dynamic (NG)EN-DC power sharing between NR FR1 carriers and the LTE carriers. If the UE supports this capability the UE supports the dynamic power sharing behaviour.

[0811] For example, ulFullPowerMode may indicate the UE support of UL full power transmission mode of fullpower.

[0812] For example, Tx diversity may indicate whether the UE supports transparent Tx diversity requirements.

[0813] For example, dualPA-architecture may indicate the support of dual PAs.

[0814] For reference, "-r16", "-r17", "-r18", "-r19" in the name of information may be omitted or used interchangeably.

[0815] In step S1202, the base station may transmit information to the UE. The information may include information related to power, operating band, and / or UL modulation. For example, The information of Step S1202 may include one or more of p-Max information, band information, UL modulation information.

[0816] For example, the band information may be the band information that has been implemented to enable the service.

[0817] For exmaple, the modulation information may include information related to UL modulation for EN-DC.

[0818] For example, p-Max information may include PEMAX,c,PEMAX,EN-DC,PNR, and / orPLTE.

[0819] In step S1203, the UE may apply conifugred maximum output power.

[0820] The UE may determine (or check) one or more of supported power class, MPRc, A-MPRc, ΔMPRc, ΔTIB,c, ΔTC,c, ΔTRxSRS, P-MPRc, ΔPpowerclass,EN-DC.

[0821] For exmaple, the UE may determine tramission power for transmission signal based on a configured maximum ouput power for each band of inter-band EN-DC.

[0822] For example, the configured maximum output power may be based on "PPowerClass,EN-DC- ΔPPowerClass,EN-DC".

[0823] For a power class 2 capable EN-DC UE, ΔPPowerClass,EN-DCis 3 dB when requirements of default power class had been applied as specified in the second example of the present disclosure. Otherwise ΔPPowerClass,EN-DC= 0 dB.

[0824] For a power class 1.5 capable EN-DC UE, ΔPPowerClass,EN-DCis 6 dB when requirements of default power class had been applied as specified in the second example of the present disclosure.; and ΔPPowerClass,EN-DCis 3dB when the requirements of power class 2 are applied as specified in the second example of the present disclosure.; otherwise ΔPPowerClass,EN-DC= 0 dB;

[0825] For example, the UE may determine tramission power for transmission signal based on the total configured maximum transmission power for EN-DC.

[0826] In step S1204, the UE may transmit information related to power to the base station. the information related to the power may inlcude one or more of PCMAX,c, PHc, ΔPpowerclass,EN-DC, ΔPPoweClass,cand / or PH. PH means Power headroom.

[0827] In step S1205, the UE may transmit signal based on the confiugred maximum output power to the test equipment.

[0828] In contrast to the example of FIG. 12, step S1205 may be omitted, and the UE may transmit an uplink signal to the base station based on the total configured maximum output power and / or the configured maximum output power.

[0829] For example, requirements related to PC1.5, PC2, or PC3 may be applied as shown in examples in the present disclosure, based on one or more of a percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period (%), power class for inter-band EN-DC, actural percentage of uplink transmission for NR, maxUplinkDutyCycle-PC2-FR1, maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16, maximum output power for E-UTRA, maximum output power for NR, and / or threshold value. For reference, requirements related to PC1.5, PC2, or PC3 may mean that supported EN-DC power class is PC1.5, PC2, or PC3 respectively.

[0830] In step S1206, the test equipment may test the requirments of the supported power class of the UE. The requirements are based on the examples of the present disclosure.

[0831] For reference, step S1205 and / or S1206 may be skipped. For another example, step S1205 and S1206 may be performed before the UE is sold to a user.

[0832] 3. The third exmaple of the present disclosure

[0833] In the third example of the present discosure, examples of [3 Inter-band EN-DC including PC1.5 with NR UL MIMO] are explained.

[0834] For PC1.5 UE or PC2 UE supporting inter band EN-DC with NR UL MIMO in FR1, the UE may indicate(or transmit) capability information to network(NW)(e.g., a base station). For example, the capability information includes one or more of information related to power class, information related to higher power limit(e.g., 'higherPowerLimitMRDC-r17'), information related to delta power class(e.g., ΔPPowerClass,EN-DC, ΔPPowerClass, C), information related to maximum uplink duty cycle, information related to dynamic power sharing, TDM pattern, simultaneous Rx / Tx, Tx diversity, dualPA-architecture, and UL MIMO full power mode. For example, the capability information may include information related to PC1.5 (e.g., based on using 'powerClass-v1610'), information related to power class 2 or power class 3 (e.g., based on using 'ue-PowerClass' or 'ue-PowerClassPerBandPerBC-r17'or 'ue-CA-PowerClass-N').

[0835] NW may indicate one or more of the maximum total transmit power to be used by the UE across all carriers for EN-DC, the maximum total transmit power to be used by the UE across all carriers for E-UTRA, the maximum total transmit power to be used by the UE across all carriers for NR, and / or the maximum transmit power to be used by the UE each carrier in frequency range 1(FR1).

[0836] For example, the maximum total transmit power can be indicated with 'p-Max'. It corresponds to PEMAX, EN-DC, PLTE, PNR, PEMAX,cin UE configured transmission power. The maximum transmit power can be indicated with 'p-Max'. It corresponds to PEMAX, Cfor serving cell 'c' or serving cell carrier 'c' in UE configured transmission power.

[0837] 3.1 Inter-band CA including PC1.5 with NR UL MIMO: UE maximum output power may be explained.

[0838] For inter-band EN-DC of E-UTRA and NR with UL MIMO in FR1, the following UE Power Classes define the maximum output power for any transmission bandwidth within the aggregated channel bandwidth. The maximum output power is measured as the sum of the maximum output power at each UE antenna connector. The period of measurement shall be at least one sub frame (1ms). UE maximum output power shall be measured over all component carriers from different bands. If each band has separate antenna connectors, maximum output power is measured as the sum of maximum output power at each UE antenna connector.

[0839] PC1.5-3TxFDD(E-UTRA)+TDD(NR)23dBm+(26dBm+26dBm)With UL MIMO in NR band26dBm+(26dBm+26dBm)26dBm+(23dBm+23dBm)TDD(E-UTRA)+TDD(NR)23dBm+(26dBm+26dBm)26dBm+(26dBm+26dBm)26dBm+(23dBm+23dBm)

[0840] For PC1.5 supporting inter-band EN-DC with UL MIMO with 3Tx, the cases shown in Table 29 are possible.

[0841] For example, PC1.5 based on 3Tx with UL MIMO in NR band can be supported by TDD(E-UTRA) or FDD (E-UTRA) with maximum output power of 23dBm or 26dBm and TDD(NR) with maximum output power of 2Tx(e.g., 23dBm+23dBm, or 26dBm +26dBm).

[0842] PC2-3TxFDD(E-UTRA)+FDD(NR)23+23(UL MIMO)With UL MIMO in NR band23+26(UL MIMO)FDD(E-UTRA)+TDD(NR)23+23(UL MIMO)23+26(UL MIMO)26+23(UL MIMO)TDD(E-UTRA)+TDD(NR)23+23(UL MIMO)23+26(UL MIMO)26+23(UL MIMO)

[0843] For PC2 supporting inter-band EN-DC with UL MIMO with 3Tx, the cases shown in Table 30 are possible.

[0844] For example, PC2 based on 3Tx with UL MIMO in NR band can be supported by TDD(E-UTRA) or FDD (E-UTRA) with maximum output power of 23dBm or 26dBm and TDD(NR) or FDD (NR) with maximum output power of 2Tx(e.g., 23dBm+23dBm, 23dBm+26dBm or 26dBm +26dBm).

[0845] EN-DC configurationPower class 1.5(dBm)Tolerance(dB)Power class 2(dBm)Tolerance(dB)Power class 3(dBm)Tolerance(dB)DC_3A-n8A26(NOTE 5 applies)+2 / -323+2 / -3DC_3A_n78A29(NOTE 6 applies)+2 / -326 (NOTE 5 applies)+2 / -323+2 / -3DC_7A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_8A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_20A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_28A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_40A_n78A29(NOTE 7 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_41A_n78A29(NOTE 7 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3NOTE 1: An uplink DC configuration in which at least one of the bands has NOTE 3 in Table 6.2.1-1 in TS 38.101-1 or NOTE 2 in Table 6.2.2-1 in TS 36.101 V18.4.0 is allowed to reduce the lower tolerance limit by 1.5 dB when the transmission bandwidths of at least one of the bands is confined within FUL_lowand FUL_low+ 4 MHz or FUL_high- 4 MHz and FUL_high.NOTE 2: PPowerClass, EN-DCis the maximum UE power specified without taking into account the toleranceNOTE 3: For inter-band EN-DC the maximum power requirement should apply to the total transmitted power over all component carriers (per UE).NOTE 4: Power Class 3 is the default power class unless otherwise stated.NOTE 5: The UE supports PC3 in E-UTRA band, and　supports PC3 or PC2 with UL MIMO in NR bandNOTE 6: The UE supports PC3 in E-UTRA FDD band, and　supports PC1.5 with UL MIMO in NR TDD bandNOTE 7: The UE supports PC3 in E-UTRA TDD band, and　supports PC1.5 with UL MIMO in NR TDD band. Or the UE supports PC2 in E-UTRA TDD band, and　supports PC2 or PC1.5 with UL MIMO in NR TDD bandNOTE 8: The UE that supports a PC2 uplink EN-DC configuration with　single carrier for each individual band and a composite of supporting PC3 within an E-UTRA band and　PC2 within a NR band may signal a higherPowerLimitMRDC-r17 capability whereby the maximum output power indicated in the table may be exceeded in accordance with [3.2]. The power classes referenced are according to the reported ue-PowerClassPerBandPerBC-r17 if indicated or ue-PowerClass otherwise.NOTE 9: The UE that supports a PC1.5 uplink EN-DC configuration with　single carrier for each individual band and a composite of supporting PC3 or PC2 within an E-UTRA band and　PC1.5 within a NR band may signal a higherPowerLimitMRDC-r17 capability whereby the maximum output power indicated in the table may be exceeded in accordance with [3.2]. The power classes referenced are according to the reported ue-PowerClassPerBandPerBC-r17 if indicated or ue-PowerClass otherwise.

[0846] Table 31 shows examples of Maximum output power for inter-band EN-DC with NR UL MIMO (two bands).

[0847] For example, for DC based on E-UTRA band 20 and NR band n78 (e.g., DC_29A_n78A), a UE may support PC 1.5. In this case, the UE may support maximum output power of 29dBm with tolerance being +2 / -3 dB.

[0848] 3.1.1 UE supporting a power class 3 for an EN-DC with NR UL MIMO

[0849] The requirements in clause [2.1.1] apply to a UE supports a power class 3 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 31.

[0850] 3.1.2 UE supporting a power class 2 for an EN-DC with NR UL MIMO (23dBm(E-UTRA TDD)+23dBm(NR TDD))

[0851] The requirements in clause [2.1.2] apply to a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 31. PC3(23dBm) for E-UTRA and PC3(23dBm) with UL MIMO for NR may be used.

[0852] 3.1.3 UE supporting a power class 2 for an EN-DC with NR UL MIMO (23dBm(E-UTRA TDD)+2x23dBm(NR TDD))

[0853] The requirements in clause [2.1.3] apply to a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 31. PC3(23dBm) for E-UTRA and PC2(2x23dBm) with UL MIMO for NR may be used.

[0854] 3.1.4 UE supporting a power class 2 for an EN-DC with NR UL MIMO (26dBm(E-UTRA TDD)+23dBm(NR TDD))

[0855] The requirements in clause [2.1.4] apply to a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 31. PC2(26dBm) for E-UTRA and PC3(23dBm) with UL MIMO for NR may be used.

[0856] 3.1.5 UE supporting a power class 1.5 for an EN-DC with NR UL MIMO (26dBm(E-UTRA TDD)+2x23dBm(NR TDD))

[0857] The requirements in clause [2.1.5] apply to a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 31 with PC2 for E-UTRA and PC2 with UL MIMO for NR. PC2(26dBm) for E-UTRA and PC2(2x23dBm) with UL MIMO for NR.

[0858] 3.1.6 UE supporting a power class 1.5 for an EN-DC with NR UL MIMO (23dBm(E-UTRA TDD)+2x26dBm(NR TDD)) is explained.

[0859] Below maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 in [3.1.6] is assumed to be configured based on PC3(23dBm) for E-UTRA TDD band and PC3(23dBm) for NR TDD band

[0860] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 = {n20, n40, n50, n60, n70, n80, n90, n100}

[0861] Or, below '0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16' in [3.1.6] is replaced by 'maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC3PC1dot5' which is assumed to be configured based on PC3(23dBm) for E-UTRA TDD band and PC1.5(2x26dBm) for NR TDD band. UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is also replaced by UE capability maxUplinkDutyCycle-interBandENDC-TDD- PC1dot5-PC3PC1dot5. This capability is explained as one example.

[0862] - maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC3PC1dot5 = {n5, n7.5, n10, n12.5, n15, n17.5, n20, n22.5, n25, n30, n40, n50, n60, n70, n80, n90, n100} or (here, n10 means 10%.); or

[0863] - maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC3PC1dot5 = {n5, n10, n12.5, n15, n17.5, n20, n22.5, n25, n30, n40, n50, n60, n70, n80, n90, n100}.

[0864] If maxUplinkDutyCycle-interBandENDC-TDD- PC1dot5-PC3PC1dot5 is not indicated, default value may be 7.5%.

[0865] If a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 31 and the supported power class enables higher maximum output power than that of the default power class. : (e.g., 23dBm + 2x26dBm)

[0866] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 7.5% (The exact evaluation period is no less than one radio frame. Here, 7.5% is a minimum value of Z in Table 22) (FIGS. 13a and 13b, G-3); or

[0867] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than Z% (The exact evaluation period is no less than one radio frame. Z may be based on Z1 in Table 22). For exmaple, Z may be same with Z1: Z = 7.5 for E-UTRA TDD Uplink-downlink Configuration X = 0; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 6; or Z = 12.5 for E-UTRA TDD Uplink-downlink Configuration X = 1; or Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 17.5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0868] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 13a and 13b, H-3); or

[0869] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0870] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0871] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 0, 1 and 6(The exact evaluation period is no less than one radio frame.) (FIGS. 13a and 13b, G-1 & G-2 are example for cases with Z=7.5). For exmaple, Z may be based on the following examples: Z = 7.5 for E-UTRA TDD Uplink-downlink Configuration X = 0; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 6; or Z = 12.5 for E-UTRA TDD Uplink-downlink Configuration X = 1; or

[0872] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (Z-12.5)% but less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 2, 3, 4 and 5(The exact evaluation period is no less than one radio frame.). For example, Z may be based on the following examples: Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 17.5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0873] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is less than or equal to 12.5%(The exact evaluation period is no less than one radio frame) (FIGS. 13a and 13b, H-3); or

[0874] - viii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) but less than or equal to 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0875] - ix) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2);

[0876] - if one of v) to ix) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0877] - x) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (Z-12.5)% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.). For example, Z may be based on the following examples: Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 17.5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0878] - xi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) as defined in TS38.331 V18.0.0 when 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0879] - xii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 1.5 or lower than the power class 1.5 (Here, 'lower than the power class 1.5' means that the UE supports the maximum output power being larger than 26dBm of power class 2 and lower than 29dBm of power class 1.5) ;

[0880] - if one of x) to xii) is satisfied, all requirements for the power class 1.5 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0881] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0882] FIGS. 13a and 13b show a second examples of average transmitted power for PC1.5 EN-DC according to an embodiment of the present disclosure.

[0883] FIGS. 13a and 13b show examples of PC1.5 EN-DC (23dBm(E-UTRA)+29dBm(NR)).

[0884] FIGS. 13a and 13b show examples of Average transmitted power for PC1.5 EN-DC with 23dBm(E-UTRA) and 29dBm(NR).

[0885] For example, R means maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16. W means maxUplinkDutyCycle-PC2-FR1. When R is absent, cases in (G) may occur. When R is not absent, cases in (H) may occur.

[0886] In case (G-1), and (H-1), average transmitted power may be less than 23dBm during evaluation period. In case (G-2), and (H-2), average transmitted power may be equal to 23dBm during evaluation period. In case (G-3), and (H-3), average transmitted power may be bigger than 23dBm during evaluation period.

[0887] For example, when R is absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be 70%. Percentage of maximum NR uplink transmission during evaluation period may be compared with 7.5% because the maximum ouput power for NR TDD is 29dBm.. Cases (G-1) to (G-3) are based on percentage of maximum NR uplink transmission during evaluation period and 7.5%.

[0888] For example, when R is not absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be Y%. Percentage of maximum NR uplink transmission during evaluation period may be compared with 0.25*Z. Cases (H-1) to (H-3) are based on percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period and 0.25*Z.

[0889] Or,

[0890] If the UE indicates higherPowerLimitMRDC-r17 for an eligible EN-DC configuration as specified in Table 26,

[0891] - if a UE supports PPowerClass,EN-DCfor the band combination, Band A and Band B in Table 26, with PPowerClass,Afor Band A and PPowerClass,Bfor Band B, to solve SAR in inter-band EN-DC, the capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is multiplied by K. It is calculated by (K=1 / ΔphigherPowerLimit, EN-DC). ΔphigherPowerLimit, EN-DCis the linear value of ΔPhigherPowerLimit, EN-DCwhich is given by {10 log10(pPowerClass,A+ pPowerClass, ,B) - PPowerClass,EN-DC).

[0892] For example, if a UE supports power class 1.5 for the band combination, Band A and Band B, with 23dBm for Band A and 29dBm for Band B, K = 0.8. For example, if a UE supports power class 1.5 for the band combination, Band A and Band B, with 26dBm for Band A and 29dBm for Band B, K = 0.67.

[0893] To differenciate K, the corresponding UE capability is proposed to be defined.

[0894] - For example, scaledUplinkDutyCycle-interBand-EN-DC = {0.67, 0.8, 1.0}

[0895] From these,

[0896] If a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 31 and the supported power class enables higher maximum output power than that of the default power class. : (e.g., 23dBm + 2x26dBm)

[0897] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*7.5% (The exact evaluation period is no less than one radio frame. Here, 7.5% is a minimum value of Z in Table 22) (FIGS. 13a and 13b, G-3); or

[0898] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*Z% (The exact evaluation period is no less than one radio frame. Z is in Table 22). For example, Z may be based on the following examples: Z = 7.5 for E-UTRA TDD Uplink-downlink Configuration X = 0; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 6; or Z = 12.5 for E-UTRA TDD Uplink-downlink Configuration X = 1; or Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 17.5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0899] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 0.25*K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 13a and 13b, H-3); or

[0900] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0901] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0902] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to K*Z% when E-UTRA TDD Uplink-downlink Configuration is 0, 1 and 6(The exact evaluation period is no less than one radio frame.) (FIGS. 13a and 13b, G-1 & G-2 is for Z=7.5). For example, Z may be based on the following examples: Z = 7.5 for E-UTRA TDD Uplink-downlink Configuration X = 0; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 6; or Z = 12.5 for E-UTRA TDD Uplink-downlink Configuration X = 1; or

[0903] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (K*Z-12.5)% but less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 2, 3, 4 and 5(The exact evaluation period is no less than one radio frame.) ; For example, Z may be based on the following examples: Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 17.5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0904] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is less than or equal to 12.5%(The exact evaluation period is no less than one radio frame) (FIGS. 13a and 13b, H-3); or

[0905] - viii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) but less than or equal to 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0906] - ix) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2);

[0907] - if one of v) to ix) is satisfied, all requirements for the power class 2 to the supported power class may be applied and and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0908] - x) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (K*Z-12.5)% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.); For example, Z may be based on the following examples: Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 17.5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 4; or Z = 20 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0909] - xi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) as defined in TS38.331 V18.0.0 when 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0910] - xii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 1.5 or lower than the power class 1.5(Here, 'lower than the power class 1.5' means that the UE supports the maximum output power being larger than 26dBm of power class 2 and lower than 29dBm of power class 1.5) ;

[0911] - if one of x) to xii) is satisfied, all requirements for the power class 1.5 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0.

[0912] 3.1.7 UE supporting a power class 1.5 for an EN-DC with NR UL MIMO (26dBm(E-UTRA TDD)+2x26dBm(NR TDD)) is explained.

[0913] Below maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 in [3.1.7] is assumed to be configured based on PC3(23dBm) for E-UTRA TDD band and PC3(23dBm) for NR TDD band

[0914] - maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 = {n20, n40, n50, n60, n70, n80, n90, n100}

[0915] Or, below '0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16' in [3.1.7] is replaced by 'maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC1dot5' and 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16' in [3.1.7] is replaced by '2xmaxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC1dot5' which is assumed to be configured based on PC2(26dBm) for E-UTRA TDD band and PC1.5(2x26dBm) for NR TDD band. UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is also replaced by UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC1dot5. This capability is explained. as one example.

[0916] - maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC1dot5 = {n5, n7.5, n10, n12.5, n15, n17.5, n20, n22.5, n25, n30, n40, n50, n60, n70, n80, n90, n100} or (here, n10 means 10%.); or

[0917] - maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC1dot5 = { n7.5, n10, n12.5, n15, n17.5, n20, n22.5, n25, n30, n40, n50, n60, n70, n80, n90, n100}.

[0918] if maxUplinkDutyCycle-interBandENDC-TDD-PC1dot5-PC2PC1dot5 is not indicated, default value is 5%.

[0919] If a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 31 and the supported power class enables higher maximum output power than that of the default power class. : (e.g., 26dBm + 2x26dBm)

[0920] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 5% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 23)) (FIGS. 14a and 14b, I-3); or

[0921] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than Z% (The exact evaluation period is no less than one radio frame. Z is in Table 23); For example, Z may be based on the following examples: Z = 5 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0922] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 14a and 14b, J-3); or

[0923] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0924] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0925] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 2, 3 and 4(The exact evaluation period is no less than one radio frame.) (FIGS. 14a and 14b, I-1 & I-2 are examples based on Z=5); For example, Z may be based on the following examples: Z = 5 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 3, and 4; or

[0926] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (Z-12.5)% but less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.); For example, Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0927] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 0.5xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is less than or equal to 12.5%(The exact evaluation period is no less than one radio frame) (FIGS. 14a and 14b, J-3); or

[0928] - viii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) but less than or equal to 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0929] - ix) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the powr class 2 (Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0930] - if one of v) to ix) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0931] - x) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (Z-12.5)% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.); For example, Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0932] - xi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) as defined in TS38.331 V18.0.0 when 0.25xmaxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0933] - xii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 1.5 or lower than the power class 1.5 (Here, 'lower than the power class 1.5' means that the UE supports the maximum output power being larger than 26dBm of power class 2 and lower than 29dBm of power class 1.5) ;

[0934] - if one of x) to xii) is satisfied, all requirements for the power class 1.5 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0935] FIGS. 14a and 14b shows examples of PC1.5 EN-DC (26dBm(E-UTRA)+29dBm(NR)).

[0936] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[0937] FIGS. 14a and 14b show a third examples of average transmitted power for PC1.5 EN-DC according to an embodiment of the present disclosure.

[0938] FIGS. 14a and 14b show examples of Average transmitted power for PC1.5 EN-DC with 26dBm(E-UTRA) and 29dBm(NR).

[0939] For example, R means maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16. W means maxUplinkDutyCycle-PC2-FR1. When R is absent, cases in (I) may occur. When R is not absent, cases in (J) may occur.

[0940] In case (I-1), and (J-1), average transmitted power may be less than 23dBm during evaluation period. In case (I-2), and (J-2), average transmitted power may be equal to 23dBm during evaluation period. In case (I-3), and (J-3), average transmitted power may be bigger than 23dBm during evaluation period.

[0941] For example, when R is absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be 40%. Percentage of maximum NR uplink transmission during evaluation period may be compared with 5% because the maximum ouput power for NR TDD is 29dBm. Cases (I-1) to (I-3) are based on percentage of maximum NR uplink transmission during evaluation period and 7.5%.

[0942] For example, when R is not absent, percentage of maximum E-UTRA uplink transmission during evaluation period may be Y%. Percentage of maximum NR uplink transmission during evaluation period may be compared with 0.25*Z. Cases (J-1) to (J-3) are based on percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period and 0.25*Z.

[0943] Or,

[0944] If the UE indicates higherPowerLimitMRDC-r17 for an eligible EN-DC configuration as specified in Table 26,

[0945] - if a UE supports PPowerClass,EN-DCfor the band combination, Band A and Band B in Table 26, with PPowerClass,Afor Band A and PPowerClass,Bfor Band B, to solve SAR in inter-band EN-DC, the capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is multiplied by K. It is calculated by (K=1 / ΔphigherPowerLimit, EN-DC). ΔphigherPowerLimit, EN-DCis the linear value of ΔPhigherPowerLimit, EN-DCwhich is given by {10 log10(pPowerClass,A+ pPowerClass,EN-DC,B) - PPowerClass,EN-DC).

[0946] For example, if a UE supports power class 1.5 for the band combination, Band A and Band B, with 23dBm for Band A and 29dBm for Band B, K = 0.8. For example, if a UE supports power class 1.5 for the band combination, Band A and Band B, with 26dBm for Band A and 29dBm for Band B, K = 0.67

[0947] To differenciate K, the corresponding UE capability is proposed to be defined. For example, scaledUplinkDutyCycle-interBand-EN-DC = {0.67, 0.8, 1.0}.

[0948] From these,

[0949] If a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination in Table 31 and the supported power class enables higher maximum output power than that of the default power class. : (e.g., 26dBm + 2x26dBm)

[0950] - i) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*5% (The exact evaluation period is no less than one radio frame. Here, E-UTRA TDD is assumed to be applied with uplink-downlink configuration 2 to 5 (Table 23)) (FIGS. 14a and 14b, I-3); or

[0951] - ii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than K*Z% (The exact evaluation period is no less than one radio frame. Z is in Table 23); For example, Z may be based on the following examples: Z = 5 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0952] - iii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 (The exact evaluation period is no less than one radio frame) (FIGS. 14a and 14b, J-3); or

[0953] - iv) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the default power class or lower than the default power class (Here, 'lower than the default power class' means that the UE supports the maximum output power being lower than 23dBm of power class 2);

[0954] - if one of i) to iv) is satisfied, all requirements for the default power class to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0955] - v) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to K*Z% when E-UTRA TDD Uplink-downlink Configuration is 2, 3 and 4(The exact evaluation period is no less than one radio frame.) (FIGS. 14a and 14b, I-1 & I-2 are examples based on Z=5); For example, Z may be based on the following examples: Z = 5 for E-UTRA TDD Uplink-downlink Configuration X = 3; or Z = 10 for E-UTRA TDD Uplink-downlink Configuration X = 2, and 4; or Z = 5 for E-UTRA TDD Uplink-downlink Configuration X = 2, 3, and 4; or

[0956] - vi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (K*Z-12.5)% but less than or equal to Z% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.); For example, Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0957] - vii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to 0.25*K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is less than or equal to 12.5%(The exact evaluation period is no less than one radio frame) (FIGS. 14a and 14b, J-3); or

[0958] - viii) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is larger than (0.25*K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) but less than or equal to 0.25*K*maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 as defined in TS38.331 V18.0.0 when 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0959] - ix) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 2 or lower than the power class 2(Here, 'lower than the power class 2' means that the UE supports the maximum output power being larger than 23dBm of power class 3 and lower than 26dBm of power class 2) ;

[0960] - if one of v) to ix) is satisfied, all requirements for the power class 2 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0961] - x) Else if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (K*Z-12.5)% when E-UTRA TDD Uplink-downlink Configuration is 5(The exact evaluation period is no less than one radio frame.); For example, Z = 15 for E-UTRA TDD Uplink-downlink Configuration X = 5; or

[0962] - xi) if the field of UE capability maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is not absent and the field of UE capability maxUplinkDutyCycle-PC2-FR1 is absent or not absent and the percentage of NR uplink symbols transmitted in a certain evaluation period is less than or equal to (0.25* K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 - 12.5) as defined in TS38.331 V18.0.0 when 0.25x K* maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16 is larger than 12.5% (The exact evaluation period is no less than one radio frame) ; or

[0963] - xii) if the IE p-maxUE-FR1 as defined in TS 38.331 V18.0.0 is provided and set to the maximum output power of the power class 1.5 or lower than the power class 1.5 (Here, 'lower than the power class 1.5' means that the UE supports the maximum output power being larger than 26dBm of power class 2 and lower than 29dBm of power class 1.5) ;

[0964] - if one of x) to xii) is satisfied, all requirements for the power class 1.5 to the supported power class may be applied and a UE may set the configured transmitted power as specified sub-clause 6.2B.4 in 38.101-1 V18.4.0;

[0965] 3.2 Inter-band EN-DC including PC1.5 with NR UL MIMO : Configured transmitted power is explained.

[0966] For inter-band EN-DC with NR UL MIMO in one of the two frequency bands, the requirements in [2.2] apply except that:

[0967] - PPowerClass,EN-DCis the maximum UE power specified in Table 31 without taking into account the tolerance;

[0968] - If the NR component carrier is configured with UL MIMO, the MPRc and A-MPRc are specified in clause 6.2D.2 and clause 6.2D.3 of [TS38.101-1] respectively.

[0969] - For a power class 2 capable UE, ΔPPowerClass,CAis 3dB when the requirements of default power class are applied as specified in [3.1], otherwise ΔPPowerClass, CA= 0 dB;

[0970] - For a power class 1.5 capable UE, ΔPPowerClass,CAis 6dB when the requirements of default power class are applied as specified in [3.1]; and ΔPPowerClass,CAis 3dB when the requirements of power class 2 are applied as specified in [3.1]; otherwise ΔPPowerClass, CA= 0 dB.

[0971] 3.3 Inter-band EN-DC including PC1.5 with NR UL MIMO: Behaviour of UE configured transmitted power is explained.

[0972] In the following, referring back to FIG. 12, examples of behavior of UE supporting EN-DC and supporting PC 1.5 or PC2 with NR UL MIMO are explained. For example, UE configured transmission power for supporting inter band EN-DC with NR UL MIMO including PC1.5 and the requirements to be tested may be explained.

[0973] In the following, only those aspects that differ from those described in the second example of the present disclosure with reference to FIG. 12 will be described.

[0974] In step S1203, the UE may apply conifugred maximum output power.

[0975] For exmaple, the UE may determine tramission power for transmission signal based on a configured maximum ouput power for each band of inter-band EN-DC with UL MIMO.

[0976] For example, the configured maximum output power may be based on "PPowerClass,EN-DC- ΔPPowerClass,EN-DC".

[0977] For a power class 2 capable EN-DC UE, ΔPPowerClass,EN-DCis 3 dB when requirements of default power class had been applied as specified in the second example to third example of the present disclosure. Otherwise ΔPPowerClass,EN-DC= 0 dB.

[0978] For a power class 1.5 capable EN-DC UE, ΔPPowerClass,EN-DCis 6 dB when requirements of default power class had been applied as specified in the second example to third example of the present disclosure.; and ΔPPowerClass,EN-DCis 3dB when the requirements of power class 2 are applied as specified in the second example to third example of the present disclosure.; otherwise ΔPPowerClass,EN-DC= 0 dB;

[0979] For example, the UE may determine tramission power for transmission signal based on the total configured maximum transmission power for EN-DC with UL MIMO.

[0980] In step S1204, the UE may transmit information related to power to the base station. the information related to the power may inlcude one or more of PCMAX,c, PHc, ΔPpowerclass,EN-DC, ΔPPoweClass,cand / or PH. PH means Power headroom.

[0981] In step S1205, the UE may transmit signal based on UL MIMO, based on the confiugred maximum output power to the test equipment.

[0982] In contrast to the example of FIG. 12, step S1205 may be omitted, and the UE may transmit an uplink signal to the base station based on the total configured maximum output power and / or the configured maximum output power.

[0983] For example, requirements related to PC1.5, PC2, or PC3 may be applied as shown in examples in the third example of the present disclosure, based on one or more of a percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period (%), power class for inter-band EN-DC with UL MIMO, actural percentage of uplink transmission for NR, maxUplinkDutyCycle-PC2-FR1, maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16, maximum output power for E-UTRA, maximum output power for NR, and / or threshold value. For reference, requirements related to PC1.5, PC2, or PC3 may mean that supported EN-DC power class is PC1.5, PC2, or PC3 respectively.

[0984] 4. The fourth exmaple of the present disclosure

[0985] In the fourth example of the present discosure, [4 Inter-band EN-DC including PC1.5 with NR Tx diversity]

[0986] For PC1.5 UE or PC2 UE supporting inter band EN-DC with NR Tx diversity in FR1, the UE may indicate(or transmit) capability information to network(NW)(e.g., a base station). For example, the capability information includes one or more of information related to power class, information related to higher power limit(e.g., 'higherPowerLimitMRDC-r17'), information related to delta power class(e.g., ΔPPowerClass,EN-DC, ΔPPowerClass, C), information related to maximum uplink duty cycle, information related to dynamic power sharing, TDM pattern, simultaneous Rx / Tx, Tx diversity(e.g., txDiversity-r16 or txDiversity2Tx-r18), dualPA-architecture, and UL MIMO full power mode. For example, the capability information may include information related to PC1.5 (e.g., based on using 'powerClass-v1610'), information related to power class 2 or power class 3 (e.g., based on using 'ue-PowerClass' or 'ue-PowerClassPerBandPerBC-r17'or 'ue-CA-PowerClass-N').

[0987] NW may indicate one or more of the maximum total transmit power to be used by the UE across all carriers for EN-DC, the maximum total transmit power to be used by the UE across all carriers for E-UTRA, the maximum total transmit power to be used by the UE across all carriers for NR, and / or the maximum transmit power to be used by the UE each carrier in frequency range 1(FR1).

[0988] For example, the maximum total transmit power can be indicated with 'p-Max'. It corresponds to PEMAX, EN-DC, PLTE, PNR, PEMAX,cin UE configured transmission power. The maximum transmit power can be indicated with 'p-Max'. It corresponds to PEMAX, Cfor serving cell 'c' or serving cell carrier 'c' in UE configured transmission power.

[0989] 4.1 Inter-band EN-DC including PC1.5 with NR Tx diversity: UE maximum output power is explained.

[0990] For inter-band EN-DC of E-UTRA and NR in FR1, the following UE Power Classes define the maximum output power for any transmission bandwidth within the aggregated channel bandwidth. The maximum output power is measured as the sum of the maximum output power at each UE antenna connector. The period of measurement shall be at least one sub frame (1ms). UE maximum output power shall be measured over all component carriers from different bands. If each band has separate antenna connectors, maximum output power is measured as the sum of maximum output power at each UE antenna connector.

[0991] PC1.5-3TxFDD(E-UTRA)+TDD(NR)23dBm+(26dBm+26dBm)With Tx Diversity in NR band26dBm+(26dBm+26dBm)26dBm+(23dBm+23dBm)TDD(E-UTRA)+TDD(NR)23dBm+(26dBm+26dBm)26dBm+(26dBm+26dBm)26dBm+(23dBm+23dBm)

[0992] For PC1.5 supporting inter-band EN-DC with NR Tx diversity, the cases shown in Table 32 are possible.

[0993] For example, PC1.5 based on 3Tx with Tx diversity in NR band can be supported by TDD(E-UTRA) or FDD (E-UTRA) with maximum output power of 23dBm or 26dBm and TDD(NR) with maximum output power of 2Tx(e.g., 23dBm+23dBm, or 26dBm +26dBm).

[0994] PC2-3TxFDD(E-UTRA)+FDD(NR)23+23(UL MIMO)With Tx Diversity in NR band23+26(UL MIMO)FDD(E-UTRA)+TDD(NR)23+23(UL MIMO)23+26(UL MIMO)26+23(UL MIMO)TDD(E-UTRA)+TDD(NR)23+23(UL MIMO)23+26(UL MIMO)26+23(UL MIMO)

[0995] For PC2 supporting inter-band EN-DC with NR Tx diversity, the cases shown in Table 33 are possible.

[0996] For PC2 supporting inter-band EN-DC with NR Tx diversity, the cases shown in Table 33 are possible.

[0997] For example, PC2 based on 3Tx with Tx diversity in NR band can be supported by TDD(E-UTRA) or FDD (E-UTRA) with maximum output power of 23dBm or 26dBm and TDD(NR) or FDD (NR) with maximum output power of 2Tx(e.g., 23dBm+23dBm, 23dBm+26dBm or 26dBm +26dBm).

[0998] EN-DC configurationPower class 1.5(dBm)Tolerance(dB)Power class 2(dBm)Tolerance(dB)Power class 3(dBm)Tolerance(dB)DC_3A-n8A26(NOTE 5 applies)+2 / -323+2 / -3DC_3A_n78A29(NOTE 6 applies)+2 / -326 (NOTE 5 applies)+2 / -323+2 / -3DC_7A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_8A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_20A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_28A_n78A29(NOTE 6 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_40A_n78A29(NOTE 7 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3DC_41A_n78A29(NOTE 7 applies)+2 / -326(NOTE 5 applies)+2 / -323+2 / -3NOTE 1: An uplink DC configuration in which at least one of the bands has NOTE 3 in Table 6.2.1-1 in TS 38.101-1 or NOTE 2 in Table 6.2.2-1 in TS 36.101 V18.4.0 is allowed to reduce the lower tolerance limit by 1.5 dB when the transmission bandwidths of at least one of the bands is confined within FUL_lowand FUL_low+ 4 MHz or FUL_high- 4 MHz and FUL_high.NOTE 2: PPowerClass, EN-DCis the maximum UE power specified without taking into account the toleranceNOTE 3: For inter-band EN-DC the maximum power requirement should apply to the total transmitted power over all component carriers (per UE).NOTE 4: Power Class 3 is the default power class unless otherwise stated.NOTE 5: The UE supports PC3 in E-UTRA band, and　supports PC3 or PC2 with Tx diversity in NR bandNOTE 6: The UE supports PC3 in E-UTRA FDD band, and　supports PC1.5 with Tx diversity in NR TDD bandNOTE 7: The UE supports PC3 in E-UTRA TDD band, and　supports PC1.5 with Tx diversity in NR TDD band. Or the UE supports PC2 in E-UTRA TDD band, and　supports PC2 or PC1.5 with Tx diversity in NR TDD bandNOTE 8: The UE that supports a PC2 uplink EN-DC configuration with　single carrier for each individual band and a composite of supporting PC3 within an E-UTRA band and　PC2 within a NR band may signal a higherPowerLimitMRDC-r17 capability whereby the maximum output power indicated in the table may be exceeded in accordance with [4.2]. The power classes referenced are according to the reported ue-PowerClassPerBandPerBC-r17 if indicated or ue-PowerClass otherwise.NOTE 9: The UE that supports a PC1.5 uplink EN-DC configuration with　single carrier for each individual band and a composite of supporting PC3 or PC2 within an E-UTRA band and　PC1.5 within a NR band may signal a higherPowerLimitMRDC-r17 capability whereby the maximum output power indicated in the table may be exceeded in accordance with [4.2]. The power classes referenced are according to the reported ue-PowerClassPerBandPerBC-r17 if indicated or ue-PowerClass otherwise.

[0999] Table 35 shows examples of Maximum output power for inter-band EN-DC with NR Tx diversity (two bands).

[1000] For example, for DC based on E-UTRA band 20 and NR band n78 (e.g., DC_29A_n78A), a UE may support PC 1.5. In this case, the UE may support maximum output power of 29dBm with tolerance being +2 / -3 dB.

[1001] 4.1.1 UE supporting a power class 3 for an EN-DC with NR Tx diversity

[1002] The requirements in clause [3.1.1] apply to a UE supports a power class 3 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 35.

[1003] 4.1.2 UE supporting a power class 2 for an EN-DC with NR Tx diversity (23dBm(E-UTRA TDD)+23dBm(NR TDD))

[1004] The requirements in clause [3.1.2] apply to a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 35. PC3(23dBm) for E-UTRA and PC3(23dBm) with Tx diversity for NR may be used.

[1005] 4.1.3 UE supporting a power class 2 for an EN-DC with NR Tx diversity (23dBm(E-UTRA TDD)+2x23dBm(NR TDD))

[1006] The requirements in clause [3.1.3] apply to a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 35. PC3(23dBm) for E-UTRA and PC2(2x23dBm) with Tx diversity for NR may be used.

[1007] 4.1.4 UE supporting a power class 2 for an EN-DC with NR Tx diversity (26dBm(E-UTRA TDD)+23dBm(NR TDD))

[1008] The requirements in clause [3.1.4] apply to a UE supports a power class 2 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 35 with PC2 for E-UTRA and PC3 with Tx diversity for NR. PC2(26dBm) for E-UTRA and PC3(23dBm) with Tx diversity for NR may be used.

[1009] 4.1.5 UE supporting a power class 1.5 for an EN-DC with NR Tx diversity (26dBm(E-UTRA TDD)+2x23dBm(NR TDD))

[1010] The requirements in clause [3.1.5] apply to a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 35 with PC2 for E-UTRA and PC2 with Tx diversity for NR. PC2(26dBm) for E-UTRA and PC2(2x23dBm) with Tx diversity for NR may be used.

[1011] 4.1.6 UE supporting a power class 1.5 for an EN-DC with NR Tx diversity (23dBm(E-UTRA TDD)+2x26dBm(NR TDD))

[1012] The requirements in clause [3.1.6] apply to a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 35 with PC3 for E-UTRA and PC1.5 with Tx diversity for NR. PC3(23dBm) for E-UTRA and PC1.5(2x26dBm) with Tx diversity for NR may be used.

[1013] 4.1.7 UE supporting a power class 1.5 for an EN-DC with NR Tx diversity (26dBm(E-UTRA TDD)+2x26dBm(NR TDD))

[1014] The requirements in clause [3.1.7] apply to a UE supports a power class 1.5 for an E-UTRA TDD and NR TDD Inter-band EN-DC band combination listed in Table 35 with PC2 for E-UTRA and PC1.5 with Tx diversity for NR. PC2(26dBm) for E-UTRA and PC1.5(2x26dBm) with Tx diversity for NR may be used.

[1015] 4.2 Inter-band EN-DC including PC1.5 with NR Tx diversity : Configured transmitted power is explained.

[1016] For inter-band EN-DC with NR Tx diverity in one of the two frequency bands, the requirements in [2.2] apply except that:

[1017] - PPowerClass,EN-DCis the maximum UE power specified in Table 35 without taking into account the tolerance;

[1018] - If the NR component carrier is configured with Tx diversity, the MPRc and A-MPRc are specified in clause 6.2G.2 and clause 6.2G.3 of [TS38.101-1] respectively.

[1019] - For a power class 2 capable UE, ΔPPowerClass,CAis 3dB when the requirements of default power class are applied as specified in [4.1], otherwise ΔPPowerClass, CA= 0 dB;

[1020] - For a power class 1.5 capable UE, ΔPPowerClass,CAis 6dB when the requirements of default power class are applied as specified in [4.1]; and ΔPPowerClass,CAis 3dB when the requirements of power class 2 are applied as specified in [4.1]; otherwise ΔPPowerClass, CA= 0 dB;

[1021] 4.3 Inter-band EN-DC including PC1.5 with NR Tx diversity: Behaviour of UE configured transmitted power is explained.

[1022] In the following, referring back to FIG. 12, examples of behavior of UE supporting EN-DC and supporting PC 1.5 or PC2 with NR Tx diversity are explained. For example, UE configured transmission power for supporting inter band EN-DC with NR Tx diversity including PC1.5 and the requirements to be tested may be explained.

[1023] In the following, only those aspects that differ from those described in the second example of the present disclosure with reference to FIG. 12 will be described.

[1024] In step S1203, the UE may apply conifugred maximum output power.

[1025] For exmaple, the UE may determine tramission power for transmission signal based on a configured maximum ouput power for each band of inter-band EN-DC with NR Tx diversity.

[1026] For a power class 2 capable EN-DC UE, ΔPPowerClass,EN-DCis 3 dB when requirements of default power class had been applied as specified in the second example to fourth example of the present disclosure. Otherwise ΔPPowerClass,EN-DC= 0 dB.

[1027] For a power class 1.5 capable EN-DC UE, ΔPPowerClass,EN-DCis 6 dB when requirements of default power class had been applied as specified in the second example to fourth example of the present disclosure.; and ΔPPowerClass,EN-DCis 3dB when the requirements of power class 2 are applied as specified in the second example to fourth example of the present disclosure.; otherwise ΔPPowerClass,EN-DC= 0 dB;

[1028] For example, the UE may determine tramission power for transmission signal based on the total configured maximum transmission power for EN-DC with NR Tx diversity.

[1029] In step S1204, the UE may transmit information related to power to the base station. the information related to the power may inlcude one or more of PCMAX,c, PHc, ΔPpowerclass,EN-DC, ΔPPoweClass,cand / or PH. PH means Power headroom.

[1030] In step S1205, the UE may transmit signal based on NR Tx diversity, based on the confiugred maximum output power to the test equipment.

[1031] In contrast to the example of FIG. 12, step S1205 may be omitted, and the UE may transmit an uplink signal to the base station based on the total configured maximum output power and / or the configured maximum output power.

[1032] For example, requirements related to PC1.5, PC2, or PC3 may be applied as shown in examples in the fourth example of the present disclosure, based on one or more of a percentage of maximum E-UTRA uplink transmission during evaluation period, percentage of maximum NR uplink transmission during evaluation period (%), power class for inter-band EN-DC with UL MIMO, actural percentage of uplink transmission for NR, maxUplinkDutyCycle-PC2-FR1, maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16, maximum output power for E-UTRA, maximum output power for NR, and / or threshold value. For reference, requirements related to PC1.5, PC2, or PC3 may mean that supported EN-DC power class is PC1.5, PC2, or PC3 respectively.

[1033] The following drawings are intended to illustrate specific embodiments of the present disclosure. The designations of specific devices or the designations of specific signals / messages / fields shown in the drawings are for illustrative purposes only, and the technical features of the present specification are not limited to the specific designations used in the drawings below.

[1034] FIG. 15 illustrates an example of an operation according to an embodiment of the present disclosure.

[1035] In addition, the operations of the UE and the base station(e.g., gNB) shown in the example of FIG. 15 are only an example. The operation of the UE is not limited by the example of FIG. 15, and the UE and the base station may perform the operations described in various examples of the present disclosure.

[1036] The UE and / or the base station may apply the requirements explained in examples of the present disclosure including the first example to the fourth example of the present disclosure.

[1037] The UE may support EN-DC and power class 2 or 1.5 for EN-DC. The Uem ay receive configuraiton related to EN-DC from a serving cell or a base station including the serving cell.

[1038] Of note, before the operation of FIG. 15 is performed, the UE and base station may perform the random access procedure described in the examples of FIGS. 6a through 6e.

[1039] For exmaple the UE may transmit random access preamble to the base station. The UE may receive response message from the base station.

[1040] In step S1501, the UE may transmit UE capability information to a base station.

[1041] For example, the base station may transmit configuration related to one or more of inter-band EN-DC, inter-band EN-DC with UL MIMO, and / or inter-band EN-DC with Tx diversity.

[1042] For exmaple, the capability informaiton includes one or more of information related to power class for NR (e.g., power class for NR supported by the UE when EN-DC is configured), information related to power class for E-UTRA(e.g., power class for E-UTRA supported by the UE when EN-DC is configured), information related to power class for the EN-DC(e.g., power class for EN-DC supported by the UE).

[1043] For example, the capability information further includes information related to higher power limit.

[1044] In step S1502, the UE may transmit uplink signal to the base station.

[1045] For example the UE may transmit uplinlk signal based on a configured maximum output power.

[1046] For example, the configured maximum output power may be based on the difference between the power class for the EN-DC and delta power for the EN-DC, based on that the device supports power class 2 or power class 1.5 and the device is configured with EN-DC.

[1047] For example, the delta power for the EN-DC may be one of 0dB, 3dB, 6dB, based on percentage of NR uplink sumbols transmitted in an evaluation period and threshold.

[1048] For example, the threshold is max uplink duty cycle for the EN-DC multiplied by a scaling factor, based on that the max uplink duty cycle for the EN-DC is included in the capability information. For example, max uplink duty cycle for the EN-DC may be maxUplinkDutyCycle-interBandENDC-TDD-PC2-r16, or maxUplinkDutyCycle-interBandENDC-TDD-PC2-PC3PC2 in the present disclosure. The scaling factor may be 1, 0.5, 0.25 as explained in examples of the present disclosure.

[1049] For example, the threshold is based on E-UTRA TDD uplink-downlink configuration, based on that the max uplink duty cycle for the EN-DC is not included in the capability information.

[1050] For example, the max uplink duty cycle for the EN-DC indicates the maximum percentage of symbols during the evaluation period that can be scheduled for NR uplink transmission under different EUTRA TDD uplink-donwlink configurations.

[1051] For example, based on that the percentage of NR uplink sumbols transmitted in an evaluation period is bigger than the threshold, the delta power for the EN-DC is 3dB, based on that the UE supports power class 2 for EN-DC.

[1052] For example, the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold, the delta power for the EN-DC is 0dB, based on that the UE supports power class 2 for EN-DC.

[1053] For example, the percentage of NR uplink sumbols transmitted in an evaluation period is bigger than the threshold, the delta power for the EN-DC is 6dB, based on that the UE supports power class 1.5 for EN-DC.

[1054] For example, the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold and is larger than the threshold minus 12.5, the delta power for the EN-DC is 3dB, based on that the UE supports power class 1.5 for EN-DC.

[1055] For example, the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold minus 12.5, the delta power for the EN-DC is 0dB, based on that the UE supports power class 1.5 for EN-DC.

[1056] When higher power limit is transmitted by the UE, threshold related to delta power for the EN-DC may be multiplied by K explained in the examples of the present disclosure.

[1057] The present specification may have various effects.

[1058] For example, high power UE (e.g., a UE supporting power class 1.5) can support EN-DC. For example, a UE supporting high transmission power can perfrom

[1059] For example, a UE...

Claims

1.A device omprising:at least one transceiver;at least one processor; andat least one memory that stores instructions and is operably electrically connectable with the at least one processor,wherein operations performed based on the instructions being executed by the at least one processor include:transmitting capability information to a base station; andtransmitting uplink signal to the base station based on a configured maximum output power,wherein the device supports power class 2 or power class 1.5 for E-UTRA NR Dual Connectivity (EN-DC),wherein the capability information includes power class for NR, power class for E-UTRA, power class for the EN-DC,wherein the configured maximum output power is based on the difference between the power class for the EN-DC and delta power for the EN-DC, based on that the device supports power class 2 or power class 1.5 and the device is configured with EN-DC, andwherein the delta power for the EN-DC is one of 0dB, 3dB, 6dB, based on percentage of NR uplink sumbols transmitted in an evaluation period and threshold.2.The device of claim 1,wherein the threshold is max uplink duty cycle for the EN-DC multiplied by a scaling factor, based on that the max uplink duty cycle for the EN-DC is included in the capability information, andwherein the threshold is based on E-UTRA Time Division Duplex (TDD) uplink-downlink configuration, based on that the max uplink duty cycle for the EN-DC is not included in the capability information.3.The device of claim 2,wherein the max uplink duty cycle for the EN-DC indicates the maximum percentage of symbols during the evaluation period that can be scheduled for NR uplink transmission under different E-UTRA TDD uplink-donwlink configurations.4.The device of claim 1,based on that the percentage of NR uplink sumbols transmitted in an evaluation period is bigger than the threshold, the delta power for the EN-DC is 3dB, based on that the UE supports power class 2 for EN-DC.5.The device of claim 1,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold, the delta power for the EN-DC is 0dB, based on that the UE supports power class 2 for EN-DC.6.The device of claim 1,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is bigger than the threshold, the delta power for the EN-DC is 6dB, based on that the UE supports power class 1.5 for EN-DC.7.The device of claim 1,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold and is larger than the threshold minus 12.5, the delta power for the EN-DC is 3dB, based on that the UE supports power class 1.5 for EN-DC.8.The device of claim 1,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold minus 12.5, the delta power for the EN-DC is 0dB, based on that the UE supports power class 1.5 for EN-DC.9.The device of claim 1, wherein the operations further comprising:transmitting random access preamble to the base station; andreceiving response message from the base station.10.A method comprising:transmitting capability information to a base station; andtransmitting uplink signal to the base station based on a configured maximum output power,wherein the device supports power class 2 or power class 1.5 for EN-DC,wherein the capability information includes power class for NR, power class for E-UTRA, power class for the E-UTRA NR Dual Connectivity (EN-DC),wherein the configured maximum output power is based on the difference between the power class for the EN-DC and delta power for the EN-DC, based on that the device supports power class 2 or power class 1.5 and the device is configured with EN-DC, andwherein the delta power for the EN-DC is one of 0dB, 3dB, 6dB, based on percentage of NR uplink sumbols transmitted in an evaluation period and threshold.11.The method of claim 10,wherein the threshold is max uplink duty cycle for the EN-DC multiplied by a scaling factor, based on that the max uplink duty cycle for the EN-DC is included in the capability information, andwherein the threshold is based on E-UTRA Time Division Duplex (TDD) uplink-downlink configuration, based on that the max uplink duty cycle for the EN-DC is not included in the capability information.12.The method of claim 10,based on that the percentage of NR uplink sumbols transmitted in an evaluation period is bigger than the threshold, the delta power for the EN-DC is 3dB, based on that the UE supports power class 2 for EN-DC.13.The merhod of claim 10,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold, the delta power for the EN-DC is 0dB, based on that the UE supports power class 2 for EN-DC.14.The method of claim 10,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is bigger than the threshold, the delta power for the EN-DC is 6dB, based on that the UE supports power class 1.5 for EN-DC.15.The method of claim 10,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold and is larger than the threshold minus 12.5, the delta power for the EN-DC is 3dB, based on that the UE supports power class 1.5 for EN-DC.16.The method of claim 10,wherein the percentage of NR uplink sumbols transmitted in an evaluation period is equal to or smaller than the threshold minus 12.5, the delta power for the EN-DC is 0dB, based on that the UE supports power class 1.5 for EN-DC.17.An apparatus comprising:at least one processor; andat least one memory storing instructions, operatively electrically coupled to the at least one processor, wherein the instructions are executed by the at least one processor to perform operations comprising:transmitting capability information to a base station; andtransmitting uplink signal to the base station based on a configured maximum output power,wherein the apparatus supports power class 2 or power class 1.5 for EN-DC,wherein the capability information includes power class for NR, power class for E-UTRA, power class for the EN-DC,wherein the configured maximum output power is based on the difference between the power class for the EN-DC and delta power for the EN-DC, based on that the apparatus supports power class 2 or power class 1.5 and the apparatus is configured with EN-DC, andwherein the delta power for the EN-DC is one of 0dB, 3dB, 6dB, based on percentage of NR uplink sumbols transmitted in an evaluation period and threshold.18.A non-transitory computer readable storage medium recording instructions,wherein the instructions, when executed by one or more processors, causing the one or more processors to perform operations compirsing:transmitting capability information to a base station; andtransmitting uplink signal to the base station based on a configured maximum output power,wherein a device including the one or more processors supports power class 2 or power class 1.5 for E-UTRA NR Dual Connectivity (EN-DC),wherein the capability information includes power class for NR, power class for E-UTRA, power class for the EN-DC,wherein the configured maximum output power is based on the difference between the power class for the EN-DC and delta power for the EN-DC, based on that the device supports power class 2 or power class 1.5 and the device is configured with EN-DC, andwherein the delta power for the EN-DC is one of 0dB, 3dB, 6dB, based on percentage of NR uplink sumbols transmitted in an evaluation period and threshold.19.A method comprising:receiving capability information from a device; andreceiving uplink signal from the device based on a configured maximum output power,wherein the device supports power class 2 or power class 1.5 for E-UTRA NR Dual Connectivity (EN-DC),wherein the capability information includes power class for NR, power class for E-UTRA, power class for the EN-DC,wherein the configured maximum output power is based on the difference between the power class for the EN-DC and delta power for the EN-DC, based on that the device supports power class 2 or power class 1.5 and the device is configured with EN-DC, andwherein the delta power for the EN-DC is one of 0dB, 3dB, 6dB, based on percentage of NR uplink sumbols transmitted in an evaluation period and threshold.20.A base station comprising:at least one transceiver;at least one processor; andat least one memory that stores instructions and is operably electrically connectable with the at least one processor,wherein operations performed based on the instructions being executed by the at least one processor include:receiving capability information from a device; andreceiving uplink signal from the device based on a configured maximum output power,wherein the device supports power class 2 or power class 1.5 for E-UTRA NR Dual Connectivity (EN-DC),wherein the capability information includes power class for NR, power class for E-UTRA, power class for the EN-DC,wherein the configured maximum output power is based on the difference between the power class for the EN-DC and delta power for the EN-DC, based on that the device supports power class 2 or power class 1.5 and the device is configured with EN-DC, andwherein the delta power for the EN-DC is one of 0dB, 3dB, 6dB, based on percentage of NR uplink sumbols transmitted in an evaluation period and threshold.

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