maximum sensitivity degradation

Abstract

A UE for performing communication is provided, the UE comprising: at least one transceiver; at least one processor configured to use CA based on two NR operating bands; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, cause performance of operations including: transmitting an uplink signal based on an NR operating band n1 or n3; receiving a downlink signal based on the NR operating band n1 or n3.

Description

Technical Field

[0001] This disclosure generally relates to mobile communications. Background Technology

[0002] The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a technology for achieving high-speed packet communication. Many proposals have been put forward for LTE objectives, including those aimed at reducing costs for users and providers, improving quality of service, and expanding and improving coverage and system capacity. 3GPP LTE requires lower cost per bit, increased service availability, flexible use of frequency bands, a simple architecture, open interfaces, and appropriate terminal power consumption as higher-level requirements.

[0003] The International Telecommunication Union (ITU) and 3GPP have begun work to develop requirements and specifications for New Radio (NR) systems. 3GPP has had to identify and develop the technical components needed to successfully standardize the new RATs for both timely meeting urgent market demands and the longer-term requirements outlined by the ITU Radiocommunication Sector (ITU-R) International Mobile Telecommunications (IMT)-2020 process. Furthermore, even in the more distant future, NR should be able to utilize any spectrum band available for wireless communication, at least up to 100 GHz.

[0004] The goal of NR is to provide a single technology framework that addresses all use cases, requirements, and deployment scenarios, including enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). NR will be inherently forward compatible.

[0005] Traditionally, the impact of self-interference on the frequency division duplex (FDD) band has not been analyzed for power class 2 user equipment (UE).

[0006] For example, standard specifications are being discussed for high-power terminals (e.g., power class 2 UE) in the FDD band. High-power terminals are not permitted to perform communications based on the current FDD band. Furthermore, in the FDD band, due to the characteristics of the FDD band, Tx / Rx can simultaneously operate in full-duplex mode through specific frequency intervals.

[0007] However, when a power boost of 3dB or greater is allowed, the linearity at high power in the duplexer is compromised, and the leakage component caused by the high power in Tx affects the Rx band. In this paper, a "3dB power boost" occurs because the maximum output power of power level 2 is 3dB greater than the maximum output power of the conventional power level 3. Therefore, in order to maintain the sensitivity standard of the existing terminal or to minimize the impact of standard slack, it is necessary to improve the characteristics of components such as duplexers / power amplifiers (PAs) and radio frequency integrated circuits (RFICs), and / or it is necessary to analyze the degree of receive sensitivity slack in the event of sensitivity degradation.

[0008] Furthermore, in the case of NR-supported n3 operating band, the frequency separation distance between UL and DL is short when using wide channel bandwidth (CBW). Therefore, anti-intermodulation distortion (CIMD) 5 generated by the transmitted signal and DC affects the receiver in band n3. Sensitivity degradation analysis was added to relax the receiver sensitivity of the PC2 terminal through CIMD5. However, the impact of CIMD5 in operating band n3 was not discussed. Summary of the Invention

[0009] Therefore, this specification has been made public in order to solve the above problems.

[0010] Technical solution

[0011] According to embodiments of this disclosure, this specification provides a UE for performing communications, the UE comprising: at least one transceiver; at least one processor configured to use CA based on two NR operating bands; and at least one computer memory operably connected to the at least one processor and storing instructions for performing operations based on execution by the at least one processor, the operations including: transmitting uplink signals based on NR operating band n1 or n3; and receiving downlink signals based on the NR operating band n1 or n3.

[0012] According to embodiments of this disclosure, this specification provides a method for performing communication, the method being performed by a UE. The method includes: transmitting an uplink signal based on NR operation band n1 or n3; and receiving a downlink signal based on the NR operation band n1 or n3.

[0013] According to embodiments of this disclosure, this specification provides a wireless communication device operating in a wireless communication system, the wireless communication device comprising: at least one processor; and at least one computer memory operatively connectable to the at least one processor, wherein the at least one processor is configured to perform operations including: generating an uplink signal based on NR operation band n1 or n3; and identifying a downlink signal based on the NR operation band n1 or n3.

[0014] According to embodiments of this disclosure, the disclosure provides at least one computer-readable medium (CRM) storing instructions that perform operations based on execution by at least one processor, the operations including: generating an uplink signal based on NR operation band n1 or n3; and identifying a downlink signal based on the NR operation band n1 or n3.

[0015] Beneficial effects

[0016] The above-mentioned problems of the prior art are solved according to the disclosure of this disclosure.

[0017] The effects achievable through the specific examples in this specification are not limited to those listed above. For example, there may be various technical effects that can be understood or derived from this specification by one of ordinary skill in the art. Therefore, the specific effects of this specification are not limited to those explicitly described herein, and may include various effects that can be understood or derived from the technical features of this specification. Attached Figure Description

[0018] Figure 1 An example of a communication system applying embodiments of the present disclosure is shown.

[0019] Figure 2 Examples of wireless devices applying embodiments of the present disclosure are shown.

[0020] Figure 3 Examples of wireless devices applying embodiments of the present disclosure are shown.

[0021] Figures 4a to 4c This is a diagram illustrating an exemplary architecture for next-generation mobile communication services.

[0022] Figure 5 The frame structure in a 3GPP-based wireless communication system applying embodiments of the present disclosure is shown.

[0023] Figure 6 The illustration shows an example of how uplink signals transmitted via the uplink operation band affect downlink signals received via the downlink operation band.

[0024] Figure 7 The illustration shows an example of how the transmitted uplink signal affects the reception of the downlink signal used for NR operation with n1.

[0025] Figure 8 The illustration shows an example of how transmitted uplink signals affect the reception of downlink signals used for NR operation with n3.

[0026] Figure 9An example illustrating the impact of the CIMD5 problem in NR band n3 is shown.

[0027] Figure 10 This is a flowchart illustrating an example of a UE process according to this disclosure. Detailed Implementation

[0028] The following technologies, devices, and systems can be applied to a variety of wireless multiple access systems. Examples of multiple access systems include Code Division Multiple Access (CDMA) systems, Frequency Division Multiple Access (FDMA) systems, Time Division Multiple Access (TDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Multi-Carrier Frequency Division Multiple Access (MC-FDMA) systems. CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM), Universal Packet Radio Service (GPRS), or Enhanced Data Rate Evolution of GSM (EDGE). OFDMA can be implemented using radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or Evolved UTRA (E-UTRA). UTRA is part of the Universal Mobile Telecommunications System (UMTS). The 3GPP Long Term Evolution (LTE) is part of the Evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE employs OFDMA in DL and SC-FDMA in UL. The evolution of 3GPP LTE includes LTE-A (Advanced), LTE-A Pre-, and / or 5G NR (New Radio).

[0029] For ease of description, embodiments of this disclosure are primarily described with respect to 3GPP-based wireless communication systems. However, the technical features of this disclosure are not limited thereto. For example, although the following detailed description is based on a mobile communication system corresponding to a 3GPP-based wireless communication system, the aspects of this disclosure that are not limited to 3GPP-based wireless communication systems are applicable to other mobile communication systems.

[0030] For any terms and techniques not specifically described in this invention, please refer to wireless communication standard documents published prior to this disclosure.

[0031] In this disclosure, "A or B" may mean "A only", "B only", or "both A and B". In other words, "A or B" in this disclosure may be interpreted as "A and / or B". For example, "A, B or C" in this disclosure may mean "A only", "B only", "C only", or "any combination of A, B and C".

[0032] In this disclosure, a forward slash ( / ) or a comma (,) can mean "and / or". For example, "A / B" can mean "A and / or B". Therefore, "A / B" can mean "A only", "B only", or "both A and B". For example, "A, B, C" can mean "A, B, or C".

[0033] In this disclosure, "at least one of A and B" may mean "only A", "only B" or "both A and B". Additionally, the expressions "at least one of A or B" or "at least one of A and / or B" in this disclosure may be interpreted as the same as "at least one of A and B".

[0034] Additionally, in this disclosure, "at least one of A, B, and C" may mean "A only", "B only", "C only" or "any combination of A, B, and C". Furthermore, "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".

[0035] Similarly, the brackets used in this disclosure may mean "for example". Specifically, when shown as "Control Message (PDCCH)", "PDCCH" can be proposed as an example of "Control Message". In other words, "Control Message" in this disclosure is not limited to "PDCCH", and "PDCCH" can be proposed as an example of "Control Message". Furthermore, even when shown as "Control Message (i.e., PDCCH)", "PDCCH" can be proposed as an example of "Control Message".

[0036] The technical features described individually in one of the accompanying drawings of this disclosure can be implemented individually or simultaneously.

[0037] Not limited thereto, the various descriptions, functions, processes, suggestions, methods and / or operation flowcharts disclosed herein can be applied to various fields requiring wireless communication and / or connectivity between devices (e.g., 5G).

[0038] The present disclosure will be described in more detail below with reference to the accompanying drawings. Unless otherwise stated, the same reference numerals in the following drawings and / or description may refer to the same and / or corresponding hardware blocks, software blocks and / or functional blocks.

[0039] Figure 1 An example of a communication system applying embodiments of the present disclosure is shown.

[0040] Figure 1 The 5G use cases shown are merely illustrative, and the technical features of this disclosure can be applied to... Figure 1 Other 5G use cases not shown.

[0041] The three main demand categories for 5G include (1) Enhanced Mobile Broadband (eMBB), (2) Massive Machine Type Communications (mMTC), and (3) Ultra Reliable Low Latency Communications (URLLC).

[0042] Some use cases may require multiple categories for optimization, while others may focus on only one key performance indicator (KPI). 5G uses a flexible and reliable approach to support such a variety of use cases.

[0043] eMBB goes far beyond basic mobile internet access, encompassing a rich array of two-way work, media, and entertainment applications in the cloud and augmented reality. Data is one of the core drivers of 5G, and for the first time in the 5G era, dedicated voice services may not be available. In 5G, voice is expected to be simply processed as an application using the data connection provided by the communication system. The primary reason for the increase in traffic is the increase in content size and the number of applications requiring high data transmission rates. As more devices connect to the internet, streaming services (audio and video), conversational video, and mobile internet access will be more widely used. Many of these applications require always-on connectivity to push real-time information and alerts to users. Cloud storage and applications are rapidly increasing in mobile communication platforms and can be applied to both work and entertainment. Cloud storage is a specific use case for accelerating the growth of uplink data transmission rates. 5G is also being used for remote work in the cloud. When using haptic interfaces, 5G requires lower end-to-end latency to maintain a good user experience. Entertainment, such as cloud gaming and video streaming, is another core element increasing the demand for mobile broadband capabilities. Entertainment is essential for smartphones and tablets in highly mobile environments, including anywhere, such as trains, vehicles, and airplanes. Other use cases include augmented reality (AR) and information retrieval for entertainment. In this case, AR requires very low latency and instantaneous data volumes.

[0044] Additionally, one of the most anticipated 5G use cases involves the ability to seamlessly connect embedded sensors across all sectors, known as mMTC (modular machine-type communications). The number of potential Internet of Things (IoT) devices is expected to reach 20.4 billion by 2020. Industrial IoT is one of the key categories enabling smart cities, asset tracking, smart utilities, agriculture, and security infrastructure through 5G.

[0045] URLLC includes new services that will transform industries such as autonomous vehicles through remote control of key infrastructure and ultra-reliable / available low-latency links. These levels of reliability and latency are essential for controlling smart grids, automating industry, enabling robotics, and controlling and managing drones.

[0046] 5G is a means of providing streaming speeds rated at hundreds of megabits per second to gigabits per second and can complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS). Delivering TVs with resolutions of 4K or higher (6K, 8K, etc.) as well as virtual reality and augmented reality require such speeds. Virtual reality (VR) and augmented reality (AR) applications include almost immersive sports games. Certain applications may require special network configurations. For example, for VR games, game companies need to integrate their core servers into the network operator's edge network servers to minimize latency.

[0047] Along with many use cases for vehicular mobility communications, automobiles are expected to become a significant new driving force in 5G. For example, passenger entertainment demands high synchronization capacity and mobile broadband with high mobility. This is because future users continue to expect high-quality connectivity regardless of their location and speed. Another use case in the automotive field is AR dashboards. AR dashboards allow drivers to identify objects in the dark beyond what is visible through the windshield and display distances and movement of objects by overlaying information spoken to the driver. In the future, wireless modules will enable communication between vehicles, information exchange between vehicles and supporting infrastructure, and information exchange between vehicles and other connected devices, such as devices that accompany pedestrians. Safety systems will guide alternative routes, allowing drivers to drive more safely and reducing the risk of accidents. The next stage will be remotely controlled or autonomous vehicles. This requires extremely high reliability and very fast communication between different autonomous vehicles and between vehicles and infrastructure. In the future, autonomous vehicles will perform all driving activities, and drivers will only focus on abnormal traffic conditions that vehicles cannot identify. The technological requirements for autonomous vehicles necessitate ultra-low latency and ultra-high reliability, enabling traffic safety to reach levels unattainable by humans.

[0048] Smart cities and smart homes / buildings, as mentioned in the context of a smart society, will be embedded in high-density wireless sensor networks. Distributed networks of smart sensors will identify cost and energy-efficient maintenance needs for cities or homes. Similar configurations can be implemented for individual households. All temperature sensors, window and heating controllers, burglar alarms, and home appliances will be wirelessly connected. Many of these sensors are typically low in data transmission rate, power, and cost. However, certain types of devices may require real-time HD video for monitoring.

[0049] The consumption and distribution of energy, including heat and gas, are allocated at a high level, necessitating automated control of distribution sensor networks. Smart grids use digital information and communication technologies to collect information and connect sensors to each other to act based on the collected data. Since this information may include the behavior of supply companies and consumers, smart grids can improve the distribution of fuels such as electricity through methods that are efficient, reliable, economically feasible, production sustainable, and automated. A smart grid can also be viewed as another sensor network with low latency.

[0050] Mission-critical applications (such as e-health) are one of the use cases for 5G. The health component includes many applications that can benefit from mobile communications. Communication systems can support telemedicine, enabling the delivery of clinical care in remote locations. Telemedicine can help reduce distance barriers and improve access to healthcare services that are not continuously available in remote rural areas. Telemedicine is also used to administer vital treatments and save lives in emergency situations. Mobile communication-based wireless sensor networks can provide remote monitoring and sensors for parameters such as heart rate and blood pressure.

[0051] Wireless and mobile communications are becoming increasingly important in industrial applications. Cabling is costly in terms of installation and maintenance. Therefore, the possibility of replacing cables with reconfigurable wireless links presents an attractive opportunity in many industries. However, to achieve this replacement, it is necessary to establish wireless connections with latency, reliability, and capacity similar to those of cables, and the management of wireless connections needs to be simplified. When connecting to 5G, low latency and a very low error probability become new requirements.

[0052] Logistics and freight tracking is a key use case for mobile communications that utilizes location-based information systems to track inventory and packages anywhere. Logistics and freight use cases typically require low data rates but demand location information with wide coverage and reliability.

[0053] refer to Figure 1 The communication system 1 includes wireless devices 100a to 100f, a base station (BS) 200, and a network 300. Although Figure 1 The 5G network is illustrated as an example of a network for communication system 1, but the embodiments of this disclosure are not limited to 5G systems and can be applied to future communication systems beyond 5G systems.

[0054] The BS200 and network 300 can be implemented as wireless devices, and a particular wireless device can operate as a BS / network node relative to other wireless devices.

[0055] Wireless devices 100a to 100f represent devices that use radio access technology (RAT) (e.g., 5G New RAT (NR) or LTE) to perform communication and may be referred to as communication / radio / 5G devices. Wireless devices 100a to 100f may include, but are not limited to, robots 100a, vehicles 100b-1 and 100b-2, extended reality (XR) devices 100c, handheld devices 100d, home appliances 100e, IoT devices 100f, and artificial intelligence (AI) devices / servers 400. For example, vehicles may include vehicles with wireless communication capabilities, autonomous vehicles, and vehicles capable of performing communication between vehicles. Vehicles may include unmanned aerial vehicles (UAVs) (e.g., drones). XR devices may include AR / VR / mixed reality (MR) devices and can be implemented in the form of head-mounted displays (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Handheld devices may include smartphones, smart tablets, wearable devices (e.g., smartwatches or smart glasses), and computers (e.g., laptops). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters.

[0056] In this disclosure, wireless devices 100a to 100f may be referred to as user equipment (UE). UE may include, for example, cellular phones, smartphones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation systems, personal computers (PCs), tablet PCs, ultrabooks, vehicles, vehicles with autonomous driving capabilities, connected cars, UAVs, AI modules, robots, AR devices, VR devices, MR devices, hologram devices, public safety devices, MTC devices, IoT devices, medical devices, fintech devices (or financial devices), security devices, weather / environment devices, devices related to 5G services, or devices related to the Fourth Industrial Revolution.

[0057] UAVs can be, for example, aircraft that are piloted via wireless control signals without a human on board.

[0058] VR devices may include, for example, devices for realizing objects or backgrounds in a virtual world. AR devices may include, for example, devices implemented by attaching objects or backgrounds in a virtual world to objects or backgrounds in a real world. MR devices may include, for example, devices implemented by blending objects or backgrounds in a virtual world into objects or backgrounds in a real world. Holographic devices may include, for example, devices for recording and reproducing stereoscopic information using the interference of light generated when two lasers meet, a phenomenon known as holography.

[0059] Public safety equipment may include, for example, image relay devices or image devices that can be worn on a user's body.

[0060] MTC devices and IoT devices can be, for example, devices that do not require direct human intervention or manipulation. For example, MTC devices and IoT devices can include smart meters, vending machines, thermometers, smart light bulbs, door locks, or various sensors.

[0061] Medical devices can be, for example, devices used for the purpose of diagnosing, treating, alleviating, curing, or preventing disease. For example, a medical device can be a device used for the purpose of diagnosing, treating, alleviating, or correcting an injury or lesion. For example, a medical device can be a device used for the purpose of examining, replacing, or modifying a structure or function. For example, a medical device can be a device used for regulating pregnancy. For example, medical devices can include devices for treatment, devices for operation, devices for (in vitro) diagnostics, hearing aids, or devices for procedures.

[0062] Security devices can be, for example, devices installed to prevent potential hazards and maintain safety. Security devices can be cameras, closed-circuit television (CCTV), recorders, or black boxes.

[0063] Fintech devices can be, for example, devices capable of providing financial services such as mobile payments. For instance, fintech devices can include payment devices or point-of-sale (POS) systems.

[0064] Weather / environmental equipment may include, for example, devices used to monitor or predict weather / environment.

[0065] Wireless devices 100a to 100f can be connected to network 300 via BS200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected to AI server 400 via network 300. Network 300 can be configured using 3G, 4G (e.g., LTE), 5G (e.g., NR), and super 5G networks. Although wireless devices 100a to 100f can communicate with each other via BS200 / network 300, wireless devices 100a to 100f can also perform direct communication with each other without going through BS200 / network 300 (e.g., sidelink communication). For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0066] Wireless communication / connections 150a, 150b, and 150c can be established between wireless devices 100a to 100f and / or between wireless devices 100a to 100f and BS200 and / or between BS200. In this document, wireless communication / connections can be established via 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. Wireless devices 100a to 100f and BS200 / wireless devices 100a to 100f can mutually send / receive radio signals via wireless communication / connections 150a, 150b, and 150c. For example, wireless communication / connections 150a, 150b, and 150c can send / receive signals via various physical channels. Therefore, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping) and resource allocation processes for transmitting / receiving radio signals can be performed based on various proposals of this disclosure.

[0067] AI refers to the field of studying artificial intelligence or the methodologies that create it, while machine learning refers to the field that defines the various problems that AI addresses and the methodologies for solving these problems. Machine learning is also defined as an algorithm that improves task performance through stable experience with a task.

[0068] A robot is a machine that automatically processes or operates a given task through its own capabilities. Specifically, a robot capable of recognizing its environment and autonomously deciding to perform actions can be called an intelligent robot. Depending on its purpose or field of application, robots can be classified as industrial, medical, domestic, military, etc. Robots can perform various physical operations, such as moving robot joints using actuators or motors. Mobile robots also include wheels, brakes, propellers, etc., on their actuators, enabling them to travel on the ground or fly in the air.

[0069] Autonomous driving refers to a technology that drives itself, while an autonomous vehicle refers to a vehicle that drives with little or no user control. For example, autonomous driving can include lane keeping, automatic speed adjustment such as adaptive cruise control, automatic driving along a set route, and automatic route planning when a destination is set. Vehicles include vehicles equipped with internal combustion engines, hybrid vehicles equipped with both internal combustion engines and electric motors, electric vehicles equipped with electric motors, and may include trains, motorcycles, and automobiles. An autonomous vehicle can be viewed as a robot with autonomous driving capabilities.

[0070] Extended reality is collectively referred to as VR, AR, and MR. VR technology provides real-world objects and backgrounds solely through computer graphics (CG) images. AR technology provides virtual CG images on top of real-world object images. MR technology is a CG technology that combines virtual objects with and integrates them into the real world. MR technology is similar to AR technology in that it presents both real and virtual objects together. However, the difference lies in the fact that in AR technology, virtual objects are used as a supplementary form to real-world objects, while in MR technology, virtual and real objects are treated as equal entities.

[0071] NR supports multiple parameter sets (and / or multiple subcarrier spacings (SCS)) to support a variety of 5G services. For example, a 15kHz SCS enables wide-area coverage in traditional cellular bands; and a 30kHz / 60kHz SCS enables dense urban areas, lower latency, and wider carrier bandwidth. A 60kHz or higher SCS enables bandwidths greater than 24.25GHz to overcome phase noise.

[0072] NR bands can be defined as two frequency ranges, namely FR1 and FR2. The numerical values ​​of the frequency ranges can be changed. For example, the frequency ranges of the two types (FR1 and FR2) can be shown in Table 1 below. For ease of illustration, in the frequency ranges used in NR systems, FR1 can mean "below 6 GHz" and FR2 can mean "above 6 GHz," and can be referred to as millimeter wave (mmW). FR2 can include FR 2-1 and FR 2-2, as shown in the examples in Tables 1 and 2.

[0073] [Table 1]

[0074] FR1 450MHz-6000MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0075] As mentioned above, the frequency range of the NR system can be varied. For example, FR1 can include a frequency band from 410MHz to 7125MHz, as shown in Table 2 below. That is, FR1 can include a frequency band of 6GHz (or 5850, 5900, 5925MHz, etc.) or more. For example, the 6GHz (or 5850, 5900, 5925MHz, etc.) or more frequency bands included in FR1 can also include unlicensed bands. Unlicensed bands can be used for various purposes, such as for vehicle communications (e.g., autonomous driving).

[0076] [Table 2]

[0077] FR1 410MHz-7125MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0078] Here, the radio communication technologies implemented in the wireless devices of this disclosure may include narrowband Internet of Things (NB-IoT) technologies 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, implemented in specifications such as LTE Cat NB1 and / or LTE Cat NB2, and may not be limited to the names mentioned above. Additionally and / or alternatively, the radio communication technologies implemented in the wireless devices of this disclosure may communicate based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and referred to by various names such as enhanced machine-type communication (eMTC). For example, LTE-M technology may be implemented in at least one of 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 names mentioned above. Additionally and / or alternatively, the radio communication technology implemented in the wireless devices of this disclosure may include at least one of ZigBee, Bluetooth, and / or LPWAN, which takes into account low-power communication, and may not be limited to the names mentioned above. For example, ZigBee technology may be based on various specifications such as IEEE 802.15.4 to generate personal area networks (PANs) associated with small / low-power digital communication, and may be referred to by various names.

[0079] Figure 2 Examples of wireless devices applying embodiments of the present disclosure are shown.

[0080] refer to Figure 2 The first wireless device 100 and the second wireless device 200 can send / receive radio signals to / from external devices via various RATs (e.g., LTE and NR).

[0081] exist Figure 2 In this context, {first wireless device 100 and second wireless device 200} can correspond to Figure 1 At least one of {wireless devices 100a to 100f and BS200}, {wireless devices 100a to 100f and wireless devices 100a to 100f} and / or {BS200 and BS200}.

[0082] The first wireless device 100 may include at least one transceiver, such as transceiver 106; at least one processing chip, such as processing chip 101; and / or one or more antennas 108.

[0083] The processing chip 101 may include at least one processor, such as processor 102, and at least one memory, such as memory 104. Figure 2 As exemplarily shown, memory 104 is included in processing chip 101. Alternatively and / or alternatively, memory 104 may be placed outside processing chip 101.

[0084] Processor 102 can control memory 104 and / or transceiver 106 and can be configured to implement the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts described in this disclosure. For example, processor 102 can process information in memory 104 to generate first information / signal, and then transmit a radio signal including the first information / signal via transceiver 106. Processor 102 can receive radio signal 106 including second information / signal via transceiver and then store the information obtained by processing the second information / signal in memory 104.

[0085] Memory 104 is operatively connectable to processor 102. Memory 104 can store various types of information and / or instructions. Memory 104 can store software code 105 that implements the instructions, which, when executed by processor 102, perform the descriptions, functions, procedures, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. For example, software code 105 can implement instructions that, when executed by processor 102, perform the descriptions, functions, procedures, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. For example, software code 105 can control processor 102 to execute one or more protocols. For example, software code 105 can control processor 102 to execute one or more layers of a radio interface protocol.

[0086] In this document, processor 102 and memory 104 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). Transceiver 106 may be connected to processor 102 and transmit and / or receive radio signals via one or more antennas 108. Each of transceivers 106 may include a transmitter and / or a receiver. Transceivers 106 may be used interchangeably with radio frequency (RF) units. In this disclosure, first wireless device 100 may represent a communication modem / circuit / chip.

[0087] The second wireless device 200 may include at least one transceiver, such as transceiver 206; at least one processing chip, such as processing chip 201; and / or one or more antennas 208.

[0088] The processing chip 201 may include at least one processor, such as processor 202, and at least one memory, such as memory 204. Figure 2As exemplarily shown, memory 204 is included in processing chip 201. Alternatively and / or alternatively, memory 204 may be placed outside processing chip 201.

[0089] Processor 202 can control memory 204 and / or transceiver 206 and can be configured to implement the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts described in this disclosure. For example, processor 202 can process information in memory 204 to generate third information / signal, and then transmit a radio signal including the third information / signal via transceiver 206. Processor 202 can receive a radio signal including a fourth information / signal via transceiver 106, and then store the information obtained by processing the fourth information / signal in memory 204.

[0090] Memory 204 is operatively connectable to processor 202. Memory 204 can store various types of information and / or instructions. Memory 204 can store software code 205 that implements the instructions, which, when executed by processor 202, perform the descriptions, functions, procedures, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. For example, software code 205 can implement instructions that, when executed by processor 202, perform the descriptions, functions, procedures, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. For example, software code 205 can control processor 202 to execute one or more protocols. For example, software code 205 can control processor 202 to execute one or more layers of a radio interface protocol.

[0091] In this document, processor 202 and memory 204 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). Transceiver 206 may be connected to processor 202 and transmit and / or receive radio signals via one or more antennas 208. Each of transceivers 206 may include a transmitter and / or a receiver. Transceivers 206 may be used interchangeably with RF units. In this disclosure, second wireless device 200 may represent a communication modem / circuit / chip.

[0092] The hardware elements of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as the 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 Adaptive Protocol (SDAP) layer). One or more processors 102 and 202 may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) in accordance with the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. One or more processors 102 and 202 may generate messages, control information, data, or information in accordance with the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information, in accordance with the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and acquire PDUs, SDUs, messages, control information, data, or information, in accordance with the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure.

[0093] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field-programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204 for being driven by one or more processors 102 and 202. The descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure may be implemented using firmware or software in the form of code, commands, and / or command sets.

[0094] One or more memories 104 and 204 can be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories 104 and 204 can be configured with read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, registers, cache memory, computationally readable storage media, and / or combinations thereof. One or more memories 104 and 204 can be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 can be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0095] One or more transceivers 106 and 206 can transmit user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed herein to one or more other devices. One or more transceivers 106 and 206 can receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed herein from one or more other devices. For example, one or more transceivers 106 and 206 can be connected to one or more processors 102 and 202 and transmit and receive radio signals. For example, one or more processors 102 and 202 can perform control such that one or more transceivers 106 and 206 can transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 can perform control such that one or more transceivers 106 and 206 can receive user data, control information, or radio signals from one or more other devices.

[0096] One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed herein via one or more antennas 108 and 208. In this disclosure, one or more antennas 108 and 208 may be multiple physical antennas or multiple logical antennas (e.g., antenna ports).

[0097] One or more transceivers 106 and 206 can convert received user data, control information, radio signals / channels, etc., from RF band signals to baseband signals so that they can be processed by one or more processors 102 and 202. One or more transceivers 106 and 206 can also convert user data, control information, radio signals / channels, etc., processed by one or more processors 102 and 202 from baseband signals to RF band signals. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters. For example, one or more transceivers 106 and 206, under the control of one or more processors 102 and 202, can upconvert OFDM baseband signals to OFDM signals using their (analog) oscillators and / or filters and transmit the upconverted OFDM signals at the carrier frequency. One or more transceivers 106 and 206 can receive OFDM signals at a carrier frequency and, under the control of one or more transceivers 102 and 202, down-convert the OFDM signals to OFDM baseband signals via their (analog) oscillators and / or filters.

[0098] In embodiments of this disclosure, the UE can operate as a transmitting device in the uplink (UL) and as a receiving device in the downlink (DL). In embodiments of this disclosure, the BS can operate as a receiving device in the UL and as a transmitting device in the DL. Hereinafter, for ease of description, it is primarily assumed that the first wireless device 100 is the UE and the second wireless device 200 is the BS. For example, a processor 102 connected to, mounted on, or started therein of the first wireless device 100 can be configured to perform UE behavior according to embodiments of this disclosure or to control the transceiver 106 to perform UE behavior according to embodiments of this disclosure. A processor 202 connected to, mounted on, or started therein of the second wireless device 200 can be configured to perform BS behavior according to embodiments of this disclosure or to control the transceiver 206 to perform BS behavior according to embodiments of this disclosure.

[0099] In this disclosure, BS is also referred to as node B (NB), e-node B (eNB), or gNB.

[0100] Figure 3 Examples of wireless devices applying embodiments of the present disclosure are shown.

[0101] Wireless devices can be implemented in various forms depending on the use case / service (see reference). Figure 1 ).

[0102] refer to Figure 3 Wireless devices 100 and 200 can correspond to Figure 2 The wireless devices 100 and 200 can be configured from various elements, components, units / parts, and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional component 140. The communication unit 110 may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include... Figure 2 One or more processors 102 and 202 and / or Figure 2 One or more memories 104 and 204. For example, transceiver 114 may include Figure 2 One or more transceivers 106 and 206 and / or Figure 2One or more antennas 108 and 208. Control unit 120 is electrically connected to communication unit 110, storage unit 130, and add-on components 140 and controls the overall operation of each of wireless devices 100 and 200. For example, control unit 120 can control the electrical / mechanical operation of each of wireless devices 100 and 200 based on programs / code / commands / information stored in storage unit 130. Control unit 120 can transmit information stored in storage unit 130 to an external source (e.g., other communication devices) via communication unit 110 through a wireless / wired interface, or store in storage in storage unit 130 information received from an external source (e.g., other communication devices) via wireless / wired interface through communication unit 110.

[0103] The additional component 140 can be configured differently depending on the type of wireless devices 100 and 200. For example, the additional component 140 may include at least one of a power unit / battery, an input / output (I / O) unit (e.g., an audio I / O port, a video I / O port), a drive unit, and a computing unit. Wireless devices 100 and 200 can be implemented in the following forms (but are not limited to): robots ( Figure 1 100a), vehicles ( Figure 1 100b-1 and 100b-2), XR equipment ( Figure 1 100c), handheld devices ( Figure 1 100d), home appliances ( Figure 1 100e), IoT devices ( Figure 1 100f), digital broadcasting terminals, hologram devices, public safety equipment, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices ( Figure 1 400 in the middle), BS ( Figure 1 The 200 devices, network nodes, etc., can be used in mobile or fixed locations, depending on the usage examples / services.

[0104] exist Figure 3In wireless devices 100 and 200, all of the various elements, components, units / parts, and / or modules can be connected to each other via wired interfaces, or at least a portion thereof can be wirelessly connected via communication unit 110. For example, in each of wireless devices 100 and 200, control unit 120 and communication unit 110 can be connected via a wire, and control unit 120 and first units (e.g., 130 and 140) can be wirelessly connected via communication unit 110. Each element, component, unit / part, and / or module within wireless devices 100 and 200 may also include one or more elements. For example, control unit 120 may be configured by a collection of one or more processors. As an example, control unit 120 may be configured by a collection of communication control processors, application processors (APs), electronic control units (ECUs), graphics processing units, and memory control processors. As another example, storage unit 130 may be configured by RAM, DRAM, ROM, flash memory, volatile memory, non-volatile memory, and / or combinations thereof.

[0105] Dual-connection (DC)

[0106] Recently, a scheme for simultaneously connecting a UE to different base stations (e.g., macro cell base stations and small cell base stations) has been investigated. This is called dual connectivity (DC).

[0107] For example, when configuring a DC in E-UTRA, the following exemplary description can be applied.

[0108] In a data center (DC), an eNodeB used for the primary cell (PCell) can be referred to as the primary eNodeB (hereinafter referred to as MeNB). Conversely, an eNodeB used only for the secondary cell (SCell) can be referred to as the secondary eNodeB (hereinafter referred to as SeNB).

[0109] A cell group that includes the primary cell (PCell) implemented by MeNB can be called the primary cell group (MCG) or PUCCH cell group 1. A cell group that includes the secondary cell (Scell) implemented by SeNB can be called the secondary cell group (SCG) or PUCCH cell group 2.

[0110] Meanwhile, in the secondary cells of the secondary cell group (SCG), the secondary cell in which the UE can send uplink control information (UCI) or the secondary cell in which the UE can send PUCCH can be called a super secondary cell (super SCell) or a primary secondary cell (primary Scell; PScell).

[0111] Figures 4a to 4c This is a diagram illustrating an exemplary architecture for next-generation mobile communication services.

[0112] refer to Figure 4a In dual connectivity (DC), the UE connects to both LTE / LTE-A and NR cells.

[0113] NR cells are connected to the core network used for traditional fourth-generation mobile communications (i.e., the evolved packet core (EPC)). Figure 4a In the example shown, the UE is configured with an EN-DC (E-UTRA-NR DC). A UE configured with an EN-DC connects to both an E-UTRA (i.e., LTE / LTE-A) cell and an NR cell. Here, the PCell in the EN-DC can be an E-UTRA (i.e., LTE / LTE-A) cell, and the PSCell in the EN-DC can be an NR cell.

[0114] refer to Figure 4b ,and Figure 4a Unlike the example in the example, LTE / LTE-A cells are connected to the core network used for fifth-generation mobile communications (i.e., the next-generation (NG) core network).

[0115] based on Figure 4a and Figure 4b The services shown in the architecture are referred to as non-standalone (NSA) services.

[0116] refer to Figure 4c The UE connects only to NR cells. Services based on this architecture are called standalone (SA) services.

[0117] Furthermore, in the aforementioned new radio access technology (NR), it is possible to consider using downlink subframes for reception from the base station and uplink subframes for transmission to the base station. This method can be applied to paired and unpaired spectrum. A spectrum pair includes two subcarriers used for downlink and uplink operation. For example, one subcarrier in a spectrum pair may include a pair of downlink bands and an uplink band.

[0118] Figure 5 The frame structure in a 3GPP-based wireless communication system applying embodiments of the present disclosure is shown.

[0119] Figure 5The frame structure shown is purely exemplary, and the number of subframes, slots, and / or symbols in a frame can vary. In 3GPP-based wireless communication systems, OFDM parameter sets (e.g., subcarrier spacing (SCS), transmission time interval (TTI) durations) can be configured differently across multiple cells aggregated for a UE. For example, if a UE is configured with different SCSs for cells aggregated for that cell, the (absolute time) durations of time resources (e.g., subframes, slots, or TTIs) comprising the same number of symbols can differ between aggregated cells. In this document, symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) symbols).

[0120] refer to Figure 5 Downlink and uplink transmissions are organized into frames. Each frame has a T f = 10ms duration. Each frame is divided into two half-frames, each half-frame having a duration of 5ms. Each half-frame consists of 5 subframes, where the duration T of each subframe is... sf It is 1ms. Each subframe is divided into time slots, and the number of time slots in a subframe depends on the subcarrier spacing. Each time slot includes 14 or 12 OFDM symbols based on the cyclic prefix (CP). In normal CP, each time slot includes 14 OFDM symbols, and in extended CP, each time slot includes 12 OFDM symbols. The parameter set is based on an exponentially scalable subcarrier spacing Δf = 2. u *15kHz.

[0121] Table 3 shows the results based on subcarrier spacing Δf = 2. u *15kHz, for normal CP, the number of OFDM symbols N per time slot slot symb The number of time slots per frame, N frame,u slot and the number of time slots N in each subframe subframe,u slot .

[0122] [Table 3]

[0123] 0 14 10 1 1 14 20 2 2 14 40 4 3 14 80 8 4 14 160 16

[0124] Table 4 shows the results based on subcarrier spacing Δf = 2. u *15kHz, for extended CP, the number N OFDM symbols per slot slot symb The number of time slots per frame, N frame,u slot and the number of time slots N in each subframesubframe,u slot .

[0125] [Table 4]

[0126] 2 12 40 4

[0127] <Operational bands in NR>

[0128] The operating band shown in Table 5 is a reconstructed operating band converted from the operating band of LTE / LTE-A. This operating band is referred to as the FR1 band.

[0129] [Table 5]

[0130]

[0131]

[0132] The following diagram shows the NR operating band defined at high frequencies. This operating band is called the FR2 band.

[0133] [Table 6]

[0134]

[0135] At the same time, when using the operating band shown in the table above, the channel bandwidth shown in the table below is used. For example, Table 7 shows an example of the maximum value of the channel bandwidth.

[0136] [Table 7]

[0137]

[0138] In the table above, SCS indicates the subcarrier spacing. In the table above, N RB Indicates the number of RBs.

[0139] At the same time, when using the operation band shown in Table 6 above, use the channel bandwidth shown in Table 8 below.

[0140] [Table 8]

[0141]

[0142] In NR, the E-UTRA (Evolved Universal Terrestrial Radio Access) operating band can also be used for communications. The E-UTRA operating band can represent the LTE operating band.

[0143] The table below shows an example of an E-UTRA operating band.

[0144] [Table 9]

[0145]

[0146]

[0147]

[0148]

[0149]

[0150] <Disclosure of this specification>

[0151] In this document, the power class of a UE can represent the maximum permissible output power of all types of handheld UEs within the FR1 frequency range. Specifically, in FR2, multiple power classes are defined according to device type, such as handheld UEs (power class 3), FWA UEs (power class 1), and vehicle-mounted UEs (power class 2).

[0152] Table 10 shows an example of UE power levels based on device type in FR2.

[0153] [Table 10]

[0154]

[0155] However, within the FR1 range, power classes should be distinguished by the maximum permissible power level across all device types. Power class 2 UEs can then support a maximum output power up to 26 dBm. Power class 3 UEs can support a maximum output power up to 23 dBm, as shown below.

[0156] Table 11 shows an example of UE power levels in FR1.

[0157] [Table 11]

[0158]

[0159] Traditionally, the impact of self-interference on the FDD band has not been analyzed for power class 2 user equipment (UE).

[0160] For example, standard specifications are being discussed for high-power terminals (e.g., power class 2 UE) in the FDD band. High-power terminals are not permitted to perform communications based on the current FDD band. Furthermore, in the FDD band, due to the characteristics of the FDD band, Tx / Rx can be simultaneously full-duplexed through a specific frequency spacing.

[0161] However, when a power boost of 3dB or greater is allowed, the linearity of the duplexer at high power is compromised, and the leakage component caused by the high power in Tx affects the Rx band. In this paper, a "3dB power boost" occurs because the maximum output power of power level 2 is 3dB greater than the maximum output power of the conventional power level 3. Therefore, in order to maintain the sensitivity standard of the existing terminal or to minimize the impact of standard slack, it is necessary to improve the characteristics of components such as the duplexer / PA and RFIC, and / or it is necessary to analyze the degree of receive sensitivity slack in the event of sensitivity degradation.

[0162] Therefore, this disclosure studies and analyzes how much Tx / Rx isolation and noise levels at the receiver of a device need to be suppressed to maintain existing standards.

[0163] Furthermore, in the case of NR-supported n3 operating band at the terminal, the frequency spacing between UL and DL is short when using wide channel bandwidth (CBW). Therefore, anti-intermodulation distortion (CIMD) 5 generated by the transmitted signal and DC affects the receiver in band n3. Sensitivity degradation analysis was added to relax the receiver sensitivity of the PC2 terminal through CIMD5. However, the impact of CIMD5 in operating band n3 was not discussed.

[0164] In this disclosure, by studying the characteristics of existing RF devices, when PC2 terminals are allowed in the FDD band, the extent of sensitivity degradation that needs to be tolerated compared to PC3 terminals is analyzed.

[0165] The following are examples of the characteristics of duplexers used for NR band n1 and NR band 3.

[0166] 1) Tx / Rx isolation level for duplexer with NR band 1

[0167] One manufacturer offers a 51dB duplexer Tx / Rx isolation level for the frequency range of 2110MHz to 2170MHz, which is the Rx band of NR band n1. Other manufacturers offer a 55dB duplexer Tx / Rx isolation level for the frequency range of 2112.4MHz to 2167.6MHz, which is included in the Rx band of NR band n1.

[0168] The average of 51dB and 55dB (which is 53dB) can be considered as the Tx / Rx isolation level of the duplexer for NR band 1 of this disclosure.

[0169] 2) For NR band 3 duplexer Tx / Rx isolation level

[0170] One manufacturer offers a 48 dB duplexer Tx / Rx isolation level for the frequency range of 1807.5 MHz to 1877.5 MHz, which is included in the Rx band of NR band n3. Other manufacturers offer a 50 dB duplexer Tx / Rx isolation level for the frequency range of 1805 MHz to 1880 MHz (which is the Rx band of NR band n3).

[0171] The average of 48dB and 50dB (i.e. 49dB) can be considered as the Tx / Rx isolation level of the duplexer for NR band n3 used in this disclosure.

[0172] On the other hand, the interference problem of a high-power UE (e.g., power class 2 UE) to an NR FDD band has been studied as follows.

[0173] This study allows for the investigation of receiver sensitivity degradation caused by high maximum output power and Tx / Rx isolation levels in RF component performance within the n1 and n3 FDD bands. It encourages the analysis of receiver sensitivity degradation. In this paper, a high maximum value means that the PC2 UE using the FDD band has a maximum output power of 26 dBm, which is 3 dB higher than that of the conventional PC3 UE using the FDD band.

[0174] Various examples of this disclosure can provide initial results for receiver sensitivity degradation for NR UEs, taking into account the current state of RF component performance in the FDD bands with n1 and n3.

[0175] According to some embodiments of this disclosure, the PC2 UE can perform communication efficiently and / or accurately based on FDD operation. For example, the impact of self-interference on the FDD band of the PC2 UE is analyzed. Furthermore, the degree of receiver sensitivity relaxation in the event of sensitivity degradation is analyzed. Additionally, the CIMD effect problem generated in the FDD band is analyzed. Furthermore, the MSD value applied to the reference sensitivity for receiving downlink signals is clearly determined.

[0176] The following figures are provided to illustrate specific examples of this specification. Since the names of specific devices or signals / messages / fields described in the figures are provided as examples, the technical features of this specification are not limited to the specific names used in the following figures.

[0177] Figure 6 The illustration shows an example of how uplink signals transmitted via the uplink operation band affect downlink signals received via the downlink operation band.

[0178] exist Figure 6In this configuration, the UE is set to perform communication based on NR FDD band X. Transmission of the uplink (UL) band based on FDD band X may affect the reception of the downlink (DL) band based on FDD band X.

[0179] In the case of a power level 2 UE, a 3dB power increase may cause nonlinearity in the UE's RF components (such as the duplexer). Therefore, leakage components from the transmission will affect the reception.

[0180] The UE should be configured to meet the Reference Sensitivity Power Level (REFSENS), which is the minimum average power used for each antenna port of the UE when receiving downlink signals.

[0181] When such a occurs Figure 6 As shown in the example, there is a possibility that the REFSENS of the downlink signal may not be satisfied due to the uplink signal sent by the UE itself.

[0182] For example, REFSENS can be configured such that the UE's downlink signal throughput is 95% or more of the maximum throughput of the reference measurement channel. When an effect occurs, there is a possibility that the downlink signal throughput may decrease to 95% or less of the maximum throughput.

[0183] Therefore, this disclosure analyzes the impact on the Rx band and defines a maximum sensitivity degradation (MSD) value for the corresponding frequency band, thus allowing relaxation of the REFSENS in the receive band associated with its own transmitted signal. Here, MSD can represent the maximum permissible reduction of REFSENS. When defining MSD for a specific operating band of the UE, the amount by which the defined MSD can be relaxed in the REFSENS of the corresponding operating band.

[0184] In the following examples disclosed in this specification, self-sensitivity degradation and / or self-interference caused by uplink transmission in the FDD band are analyzed, and criteria for relaxing their sensitivity are proposed. For example, the sensitivity relaxation criteria can be based on MSD.

[0185] In the various examples of this disclosure, self-sensitivity degradation and / or self-interference caused by uplink transmissions in FDD bands (e.g., NR operating bands n1 and / or n3) are analyzed. Figure 7 An example related to the NR operation band n1 is shown, and Figure 8 An example related to the NR operation band n3 is shown.

[0186] The following figures are provided to illustrate specific examples of this specification. Since the names of specific devices or signals / messages / fields described in the figures are provided as examples, the technical features of this specification are not limited to the specific names used in the following figures.

[0187] Figure 7 The illustration shows an example of how the transmitted uplink signal affects the reception of the downlink signal used for NR operation with n1.

[0188] exist Figure 7 In this configuration, the UE is set to perform communication based on NR FDD band n1. Transmission of the uplink (UL) band based on FDD band n1 may affect the reception of the downlink (DL) band based on FDD band n1.

[0189] In the case of a power level 2 UE, a 3dB power increase may cause nonlinearity in the UE's RF components (such as the duplexer). Therefore, leakage components from the transmission will affect the reception.

[0190] The following figures are provided to illustrate specific examples of this specification. Since the names of specific devices or signals / messages / fields described in the figures are provided as examples, the technical features of this specification are not limited to the specific names used in the following figures.

[0191] Figure 8 The illustration shows an example of how transmitted uplink signals affect the reception of downlink signals used for NR operation with n3.

[0192] exist Figure 8 In this configuration, the UE is set to perform communication based on NR FDD band n1. Transmission of the uplink (UL) band based on FDD band n3 may affect reception of the downlink (DL) band based on FDD band n3.

[0193] In the case of a power level 2 UE, a 3dB power increase may cause nonlinearity in the UE's RF components (such as the duplexer). Therefore, leakage components from the transmission will affect the reception.

[0194] For reference only. Figure 9 The CIM5 shown in the example can be further considered for use in NR operation band n3.

[0195] In the first example disclosed in this specification, the receiver sensitivity of the PC2UE in the FDD band (e.g., band n1 and / or n3) is analyzed in detail.

[0196] 1. First example of the disclosure in this specification

[0197] The first example disclosed in this specification provides an analysis of the receiver sensitivity of a PC2 UE in an FDD band.

[0198] The performance of RF components in FDD bands such as n1 / n3 was analyzed.

[0199] To derive the sensitivity degradation in bands n1 and / or n3, it can be assumed that the current RFIC characteristics and duplexer & PA characteristics in each NR band are used.

[0200] Table 12 shows examples of the current RF component characteristics based on each NR band.

[0201] [Table 12]

[0202] Total NF (dB) 9.00 9.00 RFIC noise (dBm / Hz) for Rx band -153 -150 PA noise (dBm / Hz) for Rx band -125 -122 PA gain (dB) for Rx band 28 28 Duplexer Tx / Rx isolation (dB) 53 49 RF front-end loss (dB) 4 4 Diversity gain (dB) 3 3 Antenna isolation (dB) 10 10

[0203] Table 12 shows examples of RF parameters for each NR band. NF can refer to the noise figure. PA refers to the power amplifier. RFIC can refer to the radio frequency integrated circuit.

[0204] For each FDD band, the PC2 REFSENS requirement may affect the receiver sensitivity due to the duplexer isolation level, and based on the PC3 REFSENS requirement in each FDD band, the noise level is increased by the RFIC and PA used for the Rx band at the antenna connector.

[0205] Therefore, this disclosure derives receiver sensitivity degradation based on the increased noise level in the Rx band and the RFIC / PA noise transmitted via PC2 in the FDD band through duplexer isolation.

[0206] Table 13 below shows examples of REFSENS for PC3 UEs in FDD NR bands n1 and n3 as reference points.

[0207] [Table 13]

[0208]

[0209]

[0210] C / N (carrier-to-noise ratio) requirement can refer to the target signal-to-noise ratio (SNR). MRC can refer to the maximum ratio combination.

[0211] C / N (Carrier-to-Noise Ratio) indicates the strength of the noise level compared to the signal to be received (e.g., the carrier). A C / N requirement of -1 dB refers to the ability to receive a signal (e.g., the carrier) when the received signal (e.g., the carrier) is -1 dB lower than the noise level.

[0212] RFFE (RF front end) can refer to the topmost component of an RF radio. RFFE can also refer to the RF components between the RFIC and the antenna. For example, RFFE may include a PA, LNA, duplexer, etc.

[0213] Insertion loss (IL) can refer to the loss term of the RF component. RFFE_IL is the insertion loss of the RF front end.

[0214] Noise figure (NF) refers to the amount of noise added when a signal passes through a system or circuit block. NF can be used to calculate receiver sensitivity and maximum sensitivity degradation (MSD).

[0215] RXBN (Rx band noise) can refer to the noise level caused by the Rx band.

[0216] The sensitivity with RXBN (PC3 maximum TX power) can be calculated based on the total RXBN at the antenna connector, the CBW at 10 MHz, and the target SNR (C / N requirement).

[0217] For example, for the NR n1 band and for the main path, the sensitivity with RXBN (PC3 maximum Tx power) is equal to the sum of the total RXBN at the antenna connector (-163.1) + 10log(10MHz) (i.e., 10log(10*10^6)) + target SNR (C / N requirement, which equals -1.00). That is, the sensitivity with RXBN (PC3 maximum Tx power) is equal to -163.1 + 70 - 1 = -94.1.

[0218] The values ​​shown in the last column of Table 13 are derived using MRC, which is used for the sensitivity of the RXBN (PC3 maximum Tx power) of the main and diversity paths with margins (e.g., 1.2 dB for NR band n1 and 1.6 dB for NR band n3).

[0219] 1-1. Duplexer Tx / Rx Isolation

[0220] The dominant factors for Tx / Rx isolation of duplexers in each FDD band were analyzed.

[0221] Existing power amplifiers (PAs) used in FDD bands need to improve the linearity of maximum output power by at least 3 dB compared to current PA characteristics. Furthermore, regarding duplexers, filter suppliers need to enhance Tx / Rx isolation levels to mitigate the sensitivity degradation effects in the Rx band of existing RESENS or relaxed FDD bands. However, the presence of small Tx / Rx frequency gaps in bands such as band 3 or NR band n3 also presents a challenge for filter suppliers.

[0222] Therefore, this disclosure assumes that the degradation of the 2dB Tx / Rx isolation level due to the 3dB increase in transmission power will be affected by the sensitivity degradation compared to the PC3 duplexer in n3. In other words, the 2dB Tx / Rx isolation level is used to analyze the sensitivity degradation in this disclosure because the 2dB Tx / Rx isolation level can cover the effect of the 3dB increase in transmission power.

[0223] Table 14 shows an example of the expected sensitivity degradation level obtained by reducing the isolation level in the duplexer characteristics by 2 dB. As shown in Table 14, the noise level is calculated by considering various parameters. The analysis results in Table 14 are derived based on the assumption of a 2 dB reduction in the isolation level and considering the parameters in Table 14. Therefore, due to the 2 dB reduction in the isolation level, the noise level increases by 2 dB for both the RFIC Rx band noise and the PA Rx band noise. The analysis results in Table 14 show the determined MSD (e.g., 0.4 dB for the n1 band and 0.9 dB for the n3 band), derived based on the 2 dB reduction in the duplexer's isolation level and based on the various parameters shown in Table 14. When the isolation level is reduced by 2 dB, the noise level increases by 2 dB for both the "RFIC RX band noise level at the antenna connector" and the "PA RX band noise level at the antenna connector".

[0224] [Table 14]

[0225]

[0226] Table 14 illustrates the sensitivity degradation caused by a 2dB relaxation in duplexer isolation. Compared to Table 13, the 2dB duplexer isolation was applied to both the RFIC RX band noise level and the PA RX band noise level at the antenna connector. Both the RFIC RX band noise level and the PA RX band noise level at the antenna connector increased by 2dB compared to Table 13. This is because a 2dB reduction in duplexer isolation results in a 2dB increase in noise levels in both the "RFIC RX band noise level at the antenna connector" and the "PA RX band noise level at the antenna connector".

[0227] Table 14 can be interpreted in the same way as Table 13.

[0228] For NR band n1, comparing -97.6dBm in Table 14 and -98.0dBm in Table 13, a 0.4dB MSD is required. For NR band n3, comparing -94.5dBm in Table 14 and -95.4dBm in Table 13, a 0.9dB MSD is required.

[0229] Based on the examples in Table 14, the following observations are derived:

[0230] Observation 1: In the n3 FDD band, when the duplexer isolation characteristic is reduced by 2dB compared with the current filter characteristic, 0.9dB MSD is required.

[0231] Observation 2: In the n1 FDD band, when the duplexer isolation characteristic is reduced by 2dB compared with the current filter characteristic, 0.4dB MSD is required.

[0232] 1-2. RFIC / PA noise level

[0233] The dominant factors influencing RFIC / PA noise levels in the Rx band were analyzed.

[0234] This disclosure takes into account the increased noise level in the Rx band due to RFIC / PA operation in the FDD band. Even if filter vendors attempt to maintain or enhance the current Tx / Rx isolation level in the duplexer for each FDD band, the increased leakage in the Rx band should be considered.

[0235] Observation 3: Even if the duplexer isolation level (e.g., 2dB for part 1-1) maintains or enhances the Tx / Rx isolation level, the increased leakage problem in the Rx band caused by RFIC / PA operation in the FDD band may affect the sensitivity degradation in the FDD band.

[0236] When considering a 3dB Tx power boost for a PC2 UE, the noise level can be increased by RFIC / PA operation in the Rx band. Therefore, this disclosure assumes that the noise level increases by approximately 1.5dB in the Rx band to derive the expected MSD level for each FDD band.

[0237] Table 15 shows examples of the expected sensitivity degradation levels achieved by increasing the noise level in the Rx band by the RFIC / PA.

[0238] [Table 15]

[0239]

[0240] Table 15 illustrates the sensitivity degradation resulting from increasing the noise level in the Rx band via the RFIC / PA. Compared to Table 13, a 1.5 dB increase in noise level was applied to both the RFIC RX band noise level and the PA RX band noise level at the antenna connector. The noise levels at both the RFIC RX band and the PA RX band at the antenna connector increased by 1.5 dB compared to Table 13.

[0241] Table 15 can be interpreted in the same way as Table 13.

[0242] For NR band n1, comparing -97.7dBm in Table 15 and -98.0dBm in Table 13, a 0.3dB MSD is required. For NR band n3, comparing -94.7dBm in Table 15 and -95.4dBm in Table 13, a 0.7dB MSD is required.

[0243] The expected MSD degradation in Table 15 is almost identical to the expected MSD degradation in Table 14, which is based on duplexer isolation degradation.

[0244] Based on the examples in Table 15, the following observations are derived:

[0245] Observation 4: In the n3 FDD band, 0.7 dB MSD is required when it is assumed that the noise level in the Rx band may increase by about 1.5 dB through RFIC / PA operation.

[0246] Observation 5: In the n1 FDD band, 0.3 dB MSD is required when it is assumed that the noise level in the Rx band may increase by about 1.5 dB through RFIC / PA operation.

[0247] 1-3. Duplexer Tx / Rx isolation and RFIC / PA noise levels

[0248] The dominant factors in the Rx band were analyzed by considering duplexer Tx / Rx isolation and RFIC / PA noise level.

[0249] This disclosure considers the worst-case scenario for MSD analysis. The worst-case scenario may refer to the fact that the duplexer isolation of a PC2 UE using FDD cannot maintain and enhance the duplexer isolation characteristics of a conventional PC3 UE using FDD (such as in an n3 FDD band) due to the small Tx / Rx frequency gap.

[0250] Then, due to the 3dB Tx power increase for the PC2 UE in the FDD band, the duplexer performance described above can be reduced (e.g., section 1-1), and the noise level in the Rx band of the RFIC can be increased (e.g., section 1-2). Therefore, the two factors mentioned above (e.g., duplexer Tx / Rx isolation and RFIC / PA noise level) may affect the degradation of receiver sensitivity in the FDD band.

[0251] The examples in Table 16 provide the expected sensitivity degradation by taking into account duplexer characteristics (e.g., duplexer Tx / Rx isolation) and the increased noise level in the Rx band due to RFIC / PA operation.

[0252] [Table 16]

[0253]

[0254] Table 16 illustrates examples of sensitivity degradation caused by duplexer isolation (2dB relaxation) and increased noise levels (1.5dB) in the Rx band via RFIC / PA operation.

[0255] Compared to Table 13, the 3.5 dB increase in noise level was applied to both the RFIC RX band noise level and the PA RX band noise level at the antenna connector. Both the RFIC RX band noise level and the PA RX band noise level at the antenna connector increased by 3.5 dB compared to Table 13.

[0256] Table 16 can be interpreted in the same way as Table 13.

[0257] For NR band n1, comparing -97.2dBm in Table 16 and -98.0dBm in Table 13, a 0.8dB MSD is required. For NR band n3, comparing -93.7dBm in Table 15 and -95.4dBm in Table 13, a 1.7dB MSD is required.

[0258] Based on the examples in Table 16, the following observations are derived:

[0259] Observation 6: In the n3 FDD band, a 1.7dB MSD is required when there is duplexer isolation (2dB relaxation) and increased noise level (1.5dB) in the Rx band through RFIC / PA operation for PC2 FDD UE.

[0260] Observation 7: In the n1 FDD band, 0.8 dB MSD is required when there is duplexer isolation (2 dB relaxation) and increased noise level (1.5 dB) in the Rx band through RFFIC / PA operation for PC2 FDD UE.

[0261] For example, when PC2 UE transmits uplink signals via NR operation band n1 and receives downlink signals via NR operation band n1, 0.8 dB MSD is applied as a reference sensitivity for receiving downlink signals. In other words, 0.8 dB MSD can also be interpreted as the reference sensitivity for NR operation band n1 for PC2 UE being 0.8 dB greater than the reference sensitivity for NR operation band n1 for PC3 UE.

[0262] For example, when PC2 UE transmits uplink signals via NR operation band n3 and receives downlink signals via NR operation band n3, 1.7 dB MSD is applied as a reference sensitivity for receiving downlink signals. In other words, 1.7 dB MSD can also be interpreted as the reference sensitivity for NR operation band n3 for PC2 UE being 1.7 dB greater than the reference sensitivity for NR operation band n3 for PC3 UE.

[0263] In addition, for NR operation band n3, sensitivity degradation due to wide channel bandwidth needs to be considered.

[0264] 1-4. Wideband Sensitivity Degradation Analysis in n3 Bands

[0265] For the wide channel bandwidth (CBW) in the n3 NR band, sensitivity degradation needs to be analyzed to account for factors such as... Figure 9 The example illustrates the anti-IMD problem caused by CIMD5 in the n3 receiver band.

[0266] Here, wide CBW can refer to a CBW equal to or greater than 40MHz.

[0267] The following figures are provided to illustrate specific examples of this specification. Since the names of specific devices or signals / messages / fields described in the figures are provided as examples, the technical features of this specification are not limited to the specific names used in the following figures.

[0268] Figure 9 The figure illustrates an example of the impact of the CIMD5 problem in NR band n3.

[0269] exist Figure 9 In this context, "Desired" can refer to the UL signal that the UE wants to transmit. LO can refer to the signal generated by the local oscillator (LO). "Image" can refer to the signal generated at a point relative to the LO of the "Desired" signal. The "Image" signal is generated by mixing the LO signal and the "Desired" signal. BB can refer to the baseband bandwidth. BB can also refer to the difference between the frequency position of the LO and the frequency position of the "Desired" signal.

[0270] A CIM3 component is generated at a frequency position 3 BB away from the frequency position of L0. A CIM5 component is generated at a frequency position 5 BB away from the frequency position of LO.

[0271] CIM5 in NR band n3 affects reception in Rx band.

[0272] To derive the sensitivity reduction in n3 due to the wide CBW, assume the parameters in Table 17 are used.

[0273] [Table 17]

[0274] Total NF (dB) 9.00 Inverse intermodulation product CIM5 (dBc) -60 RFIC noise (dBm / Hz) for Rx band -150 PA noise (dBm / Hz) for Rx band -122 PA gain (dB) for Rx band 28 Duplexer Tx / Rx isolation (dB) 47 RF front-end loss (dB) 4 Diversity gain (dB) 3 Antenna isolation (dB) 10

[0275] The examples in Table 17 show the RF parameters according to each NR band.

[0276] The receiver sensitivity required by PC2 REFSENS will be affected by the duplexer isolation level and the noise level added by the RFIC and PA at the antenna connector for the Rx band relative to the PC3 REFSENS requirement in each CBW.

[0277] Therefore, the receiver sensitivity degradation will be derived based on the increased noise level in the Rx band caused by duplexer isolation and the RFIC / PA noise caused by CIM5 transmitted from PC2 in the FDD band.

[0278] The following REFSENS analysis provides an example of a PC3 UE used in an n3 FDD NR band, with 40MHz and 50MHz CBW as reference points.

[0279] [Table 18]

[0280]

[0281] Table 18 shows an example of REFSENS references for the PC3 FDD UE in each CBW (e.g., 40MHz, 50MHz).

[0282] Table 18 can be interpreted in the same way as Table 13.

[0283] Table 19 shows an example of the expected sensitivity degradation in the anti-IMD problem in a wide CBW for a PC2 UE with n3 band.

[0284] [Table 19]

[0285]

[0286] Table 19 shows examples of sensitivity degradation of the PC2 FDD UE in each CBW (40MHz, 50MHz).

[0287] CIM5 can increase as UE Tx power increases. Table 18 shows an example of the CIM5 level for a PC3 UE using FDD, and the example in Table 18 is based on a PC2 UE using FDD. In Table 19, because the Tx power of the PC2 UE is 3dB greater than that of the PC3 UE, it is assumed that the CIM5 level increases by 3dB, and that the PA and RFIC RX noise power levels occurring in the RFIC increase by 1.5dB. Table 19 shows an example of the MSD determined by analyzing the total noise based on the sum of the noise generated by each parameter.

[0288] Compared to Table 18, a 1.5 dB increase in noise level is applied to the RFIC RX band noise level and the PA RX band noise level at the antenna connector. This 1.5 dB increase is based on the noise effects caused by the wide bandwidth of CIM 5, which is based on 40 MHz and / or 50 MHz.

[0289] Compared to Table 18, CIM5 at the antenna connector has increased by 3dB.

[0290] For NR band n1, comparing -83.3dBm in Table 19 and -85.5dBm in Table 18, a 2.12dB MSD is required. For NR band n3, comparing -80.9dBm in Table 19 and -83.2dBm in Table 18, a 2.36dB MSD is required.

[0291] Based on the examples in Table 19, the following observations are derived:

[0292] Observation 8: In 40MHz CBW, when PC2 is transmitted in the n3 FDD band, 2.12dB MSD is required.

[0293] Observation 9: In 50MHz CBW, when PC2 is transmitted in the n3 FDD band, 2.36dB MSD is required.

[0294] Based on analyses of various examples, such as the descriptions in Sections 1-1 through 1-3, this disclosure proposes the following:

[0295] To reduce sensitivity degradation in the n3 and / or n1 bands, filter suppliers should maintain or enhance the duplexer Tx / Rx isolation level in the FDD band to support PC2 UEs.

[0296] Based on improvements to RF components, sensitivity degradation requirements can be studied when RF component suppliers are able to provide these commercial duplexers, PAs, and RFICs for PC2UE in the FDD band in the future.

[0297] To reduce sensitivity degradation in the n3 / n1 band, filter suppliers should maintain or improve the duplexer Tx / Rx isolation level.

[0298] The input of an RF component supplier can be considered when the supplier is able to support enhanced RF component performance (such as RFIC, duplexer, and PA) to support PC2 UE in FDD band.

[0299] When RF component vendors provide these commercial duplexers, PAs, and RFICs for PC2 UEs in the FDD band, sensitivity degradation requirements can be further investigated. The above examples of MSD results in this disclosure can be considered as a baseline for deriving future MSD requirements.

[0300] Based on the analysis of receiver sensitivity degradation in PC2 UEs in the FDD band, this disclosure provides the following observations and suggestions:

[0301] The sensitivity degradation of PC2 can be derived based on the REFSENS requirements for PC3.

[0302] When a PC2 (26dBm) UE is allowed in the FDD band, sensitivity degradation should be considered because the duplexer Tx / Rx isolation level will increase by approximately 2dB due to the 3dB transmit power boost. This will then affect sensitivity degradation compared to the PC3 duplexer in n3.

[0303] In addition, the increased noise level in the Rx band due to the RFIC / PA operation of the PC2 UE in the FDD band should be considered to derive the sensitivity degradation for each FDD band.

[0304] In the n3 FDD band, when the duplexer isolation characteristic is 2dB lower than the current filter characteristic, 0.9dB MSD is required.

[0305] In the n1 FDD band, when the duplexer isolation characteristics are 2dB lower than the current filter characteristics, 0.4dB MSD is required.

[0306] Even if the duplexer isolation level is maintained or the Tx / Rx isolation level is enhanced, the increased leakage problem in the Rx band due to RFIC / PA operation in the FDD band will also affect the sensitivity degradation in the FDD band.

[0307] In the n3 FDD band, 0.7 dB MSD is required when assuming that the noise level in the Rx band may increase by about 1.5 dB through RFIC / PA operation.

[0308] In the n1 FDD band, 0.3 dB MSD is required when it is assumed that the noise level in the Rx band may increase by about 1.5 dB through RFIC / PA operation.

[0309] In the n3 FDD band, a 1.7 dB MSD is required when there is duplexer isolation (2 dB relaxation) and increased noise level (1.5 dB) in the Rx band via RFIC / PA operation for PC2 FDD UE.

[0310] In the n1 FDD band, 0.8 dB MSD is required when there is duplexer isolation (2 dB relaxation) and increased noise level (1.5 dB) in the Rx band via RFFIC / PA operation for PC2 FDD UE.

[0311] In the 40MHz CBW of the n3 FDD band, when the PC2 transmission in the n3 NR band is performed, a 2.12dB MSD is required.

[0312] In the 50MHz CBW of the n3 FDD band, when the PC2 transmission in the n3 NR band is performed, a 2.36dB MSD is required.

[0313] To reduce sensitivity degradation in the n3 / n1 band, filter suppliers should maintain or improve the duplexer Tx / Rx isolation level.

[0314] The input of an RF component supplier can be considered when the supplier is able to support enhanced RF component performance (such as RFIC, duplexer, and PA) to support PC2 UE in FDD band.

[0315] When RF component vendors provide these commercial duplexers, PAs, and RFICs for PC2 UEs in the FDD band, sensitivity degradation requirements can be further investigated. The above examples of MSD results in this disclosure can be considered as a baseline for deriving future MSD requirements.

[0316] For reference, a ±α tolerance can be applied to the MSD values ​​shown in this disclosure. For example, α can be 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, ... and can be 2.0. That is, the range of MSD values ​​presented in this specification can include MSD values ​​with a ±α tolerance applied. The tolerance value can be determined in 0.1 dB increments based on the characteristics of the RF component.

[0317] The following figures are provided to illustrate specific examples of this specification. Since the names of specific devices or signals / messages / fields described in the figures are provided as examples, the technical features of this specification are not limited to the specific names used in the following figures.

[0318] Figure 10 This is a flowchart illustrating an example of a UE process according to this disclosure.

[0319] refer to Figure 10 The diagram illustrates steps S1010 to S1030. The operations described below can be performed by the UE (e.g., Figure 2 The first device 100) is executed.

[0320] For reference, step S1010 may not always be executed when the UE performs communication. For example, step S1010 may only be executed when testing the UE's reception performance.

[0321] In execution Figure 10 In the UE operating the NR mode, NR operation bands n1 and / or n3 can be configured for communication. The UE can be a PC2 UE.

[0322] In step S1010, the UE can pre-configure the MSD value. For example, the UE can pre-configure the MSD values ​​in Tables 13, 14, 15, 16, 18 and / or 19.

[0323] In step S1020, the UE may send an uplink signal.

[0324] In step S1030, the UE can receive downlink signals.

[0325] The UE can receive downlink signals based on a reference sensitivity of the downlink band to which the MSD value (e.g., the MSD values ​​shown in the examples of Tables 14, 15, 16, and / or 19) is applied. For example, a predetermined value of MSD is applied to the reference sensitivity for receiving downlink signals.

[0326] Since the UE is a PC2 UE and the NR operation band n1 of the FDD band is used for both uplink and downlink signals, the predetermined value of MSD can be 0.8dB.

[0327] Based on the fact that the UE is a PC2 UE and the NR operation band n3 of the FDD band is used for uplink and downlink signals, and based on the fact that the CBW is 10MHz, the predetermined value of MSD can be 1.7dB.

[0328] Based on the fact that the UE is a PC2 UE and the NR operation band n3 of the FDD band is used for uplink and downlink signals, and based on the fact that the CBW is 40MHz, the predetermined value of MSD can be 2.12dB.

[0329] Based on the fact that the UE is a PC2 UE and the NR operation band n3 of the FDD band is used for uplink and downlink signals, and based on the fact that the CBW is 50MHz, the predetermined value of MSD can be 2.36dB.

[0330] For reference, the order of executing steps S1020 and S1030 can be the same as... Figure 10 The order shown is different. For example, step S1030 can be executed first, followed by step S1020. Alternatively, steps S1020 and S1030 can be executed simultaneously. Alternatively, the timing of steps S1020 and S1030 can partially overlap.

[0331] In the following, apparatus (e.g., UE) in a wireless communication system according to some embodiments of the present disclosure will be described.

[0332] For example, the device may include at least one processor, at least one transceiver, and at least one computer memory.

[0333] For example, at least one computer memory is operatively connected to at least one processor and stores instructions that perform operations based on execution by the at least one processor, the operations including: transmitting uplink signals based on a new radio (NR) operating band n1, where the NR operating band n1 is an FDD band, and the UE is a PC2 UE supporting a maximum output power of 26 dBm; and receiving downlink signals based on the NR operating band n1, where a predetermined value of MSD is applied as a reference sensitivity for receiving downlink signals, and where the predetermined value of MSD is 0.8 dB, based on the UE being a PC2 UE and the NR operating band n1 being used for both uplink and downlink signals.

[0334] In the following, a processor for a wireless communication system according to some embodiments of the present disclosure will be described.

[0335] The processor can be configured to perform operations including: transmitting uplink signals based on a new radio (NR) operating band n1 as an FDD band, wherein the UE is a PC2 UE supporting a maximum output power of 26 dBm; and receiving downlink signals based on the NR operating band n1, wherein a predetermined value of MSD is applied to a reference sensitivity for receiving downlink signals, and wherein the predetermined value of MSD is 0.8 dB, based on the UE being a PC2 UE and the NR operating band n1 being used for both uplink and downlink signals.

[0336] In the following, a non-transitory computer-readable medium having a plurality of instructions stored thereon in a wireless communication system according to some embodiments of the present disclosure will be described.

[0337] According to some embodiments of this disclosure, the technical features of this disclosure can be directly embodied in hardware, software executed by a processor, or a combination of both. For example, a method executed by a wireless device in wireless communication can be implemented using hardware, software, firmware, or any combination thereof. For example, the software can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other storage medium.

[0338] In some examples, the storage medium is coupled to a processor, enabling the processor to read information from the storage medium. Alternatively, the storage medium can be integrated into the processor. The processor and storage medium can reside in an ASIC. In other examples, the processor and storage medium can reside as discrete components.

[0339] Computer-readable media can include tangible and non-transitory computer-readable storage media.

[0340] For example, non-transitory computer-readable media may include random access memory (RAM) (such as synchronous dynamic random access memory (SDRAM)), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), flash memory, magnetic or optical data storage media, or any other medium capable of being used to store instructions or data structures. Non-transitory computer-readable media may also include combinations of the above.

[0341] Furthermore, the methods described herein can be implemented at least in part by a computer-readable communication medium that carries or conveys code in the form of instructions or data structures and is accessible, read and / or executed by a computer.

[0342] According to some embodiments of this disclosure, a non-transitory computer-readable medium has a plurality of instructions stored thereon. The plurality of instructions stored can be executed by a processor of a UE.

[0343] For example, the stored instructions can enable the UE to perform operations including: transmitting uplink signals based on a new radio (NR) operating band n1 (which is an FDD band), wherein the UE is a PC2 UE supporting a maximum output power of 26 dBm; and receiving downlink signals based on the NR operating band n1, wherein a predetermined value of MSD is applied to a reference sensitivity for receiving downlink signals, and wherein the predetermined value of MSD is 0.8 dB, based on the UE being a PC2 UE and the NR operating band n1 being used for both uplink and downlink signals.

[0344] According to some embodiments of this disclosure, the PC2 UE can perform communication efficiently and / or accurately based on FDD operation. For example, the impact of self-interference on the FDD band of the PC2 UE is analyzed. Furthermore, the degree of receiver sensitivity relaxation in the event of sensitivity degradation is analyzed. Additionally, the CIMD effect problem generated in the FDD band is analyzed. Furthermore, the MSD value applied to the reference sensitivity for receiving downlink signals is clearly determined.

[0345] In the exemplary system described above, although the method has been described based on a flowchart using a series of steps or blocks, this disclosure is not limited to the order of the steps, and some steps may be performed in a different order than the remaining steps, or may be performed simultaneously with the remaining steps. Furthermore, those skilled in the art will understand that the steps shown in the flowchart are not exclusive, and other steps may be included, or one or more steps of the flowchart may be deleted without affecting the scope of this disclosure.

[0346] The beneficial effects obtainable through specific embodiments of this disclosure are not limited to those listed above. For example, various technical effects may exist that can be understood and / or derived from this disclosure by those skilled in the art. Therefore, the specific effects of this disclosure are not limited to those explicitly described herein, but may include various effects that can be understood or derived from the technical features of this disclosure.

[0347] The claims in this disclosure can be combined in various ways. For example, the technical features in the method claims of this disclosure can be combined to implement or perform in an apparatus, and the technical features in the apparatus claims can be combined to implement or perform in a method. Furthermore, the technical features in the method claims and apparatus claims can be combined to implement or perform in an apparatus. Other embodiments are within the scope of the appended claims.

Claims

1. A user equipment (UE), comprising: At least one transceiver; At least one processor; as well as At least one computer memory, operatively connectable to the at least one processor and storing instructions that perform operations based on execution by the at least one processor, the operations including: The downlink signal is received based on the new radio (NR) operating band n3, which is the frequency division duplex (FDD) band. The UE mentioned here is a power level 2 (PC2UE) associated with a maximum output power of 26 dBm. The at least one transceiver is configured to meet the reference sensitivity requirement. Wherein, degradation of the reference sensitivity is permissible. Wherein, the maximum amount of degradation used for the NR operation band n3 is based on the channel bandwidth (CBW), and Wherein, based on the fact that the UE is the PC2 UE, for the CBW of 50MHz, the maximum amount of degradation for the NR operation band n3 is 2.8dB.

2. The UE according to claim 1, in, Based on the fact that the UE is the PC2 UE, and the CBW is 10MHz, the maximum amount of degradation for the NR operation band n3 is 0.5dB.

3. The UE according to claim 1, in, Based on the fact that the UE is the PC2 UE, and the CBW is 40MHz, the maximum amount of degradation for the NR operation band n3 is 1.5dB.

4. The UE according to claim 1, in, The NR operation band n3 includes an uplink band with a frequency range of 1710MHz to 1785MHz and a downlink band with a frequency range of 1805MHz to 1880MHz.

5. A method performed by a user equipment (UE), the method comprising: The downlink signal is received based on the new radio (NR) operating band n3, which is the frequency division duplex (FDD) band. The UE mentioned here is a power level 2 (PC2UE) associated with a maximum output power of 26 dBm. The UE is configured to meet the requirements based on reference sensitivity. Wherein, degradation of the reference sensitivity is permissible. Wherein, the maximum amount of degradation used for the NR operation band n3 is based on the channel bandwidth (CBW), and Wherein, based on the fact that the UE is the PC2 UE, for the CBW of 50MHz, the maximum amount of degradation for the NR operation band n3 is 2.8dB.

6. The method according to claim 5, in, Based on the fact that the UE is the PC2 UE, and the CBW is 10MHz, the maximum amount of degradation for the NR operation band n3 is 0.5dB.

7. The method according to claim 5, in, Based on the fact that the UE is the PC2 UE, and the CBW is 40MHz, the maximum amount of degradation for the NR operation band n3 is 1.5dB.

8. The method according to claim 5, in, The NR operation band n3 includes an uplink band with a frequency range of 1710MHz to 1785MHz and a downlink band with a frequency range of 1805MHz to 1880MHz.

9. A user equipment (UE), comprising: At least one transceiver; At least one processor; as well as At least one computer memory, operatively connectable to the at least one processor and storing instructions that perform operations based on execution by the at least one processor, the operations including: The downlink signal is received based on the new radio (NR) operating band n1, which is the frequency division duplex (FDD) band. The UE mentioned here is a power level 2 (PC2UE) associated with a maximum output power of 26 dBm. The UE is configured to meet the requirements based on reference sensitivity. Wherein, degradation of the reference sensitivity is permissible. Wherein, based on the fact that the UE is the PC2 UE, the maximum amount of degradation for the NR operation band n1 is 0.8dB.

10. The UE according to claim 9, in, The NR operation band n1 includes an uplink band with a frequency range of 1920MHz to 1980MHz and a downlink band with a frequency range of 2110MHz to 2170MHz.

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