Method and apparatus for measurement reporting considering network power saving in wireless communication system

Abstract

A method and apparatus for measurement reporting in consideration of network power saving in a wireless communication system are provided. The wireless device receives a reporting configuration related to the activation indication from the network. The wireless device is deactivated in consideration of the reporting configuration. The wireless device activates the reporting configuration upon receiving the activation indication. The wireless device sends a measurement report to the network based on the reporting configuration.

Description

Technical Field

[0001] The present disclosure relates to a method and apparatus for measurement reporting considering network power saving in a wireless communication system. Background Art

[0002] The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a technology that enables high-speed packet communications. Many solutions have been proposed for LTE, including those aimed at reducing user and provider costs, improving service quality, and expanding and improving coverage and system capacity. As high-level requirements, 3GPP LTE requires reduced cost per bit, increased service availability, flexible use of frequency bands, a simple structure, open interfaces, and appropriate power consumption of terminals.

[0003] The International Telecommunication Union (ITU) and 3GPP have begun developing requirements and specifications for New Radio (NR) systems. 3GPP must identify and develop the technical components necessary for the successful standardization of new RATs that will meet both immediate market needs and the longer-term requirements outlined by the ITU Radiocommunication Sector (ITU-R) International Mobile Telecommunications (IMT)-2020 process. Furthermore, NR should be able to use any spectrum band available for wireless communications in the more distant future, at least up to 100 GHz.

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

[0005] Technical issues

[0006] If a cell is about to be switched off, the network needs to receive measurement reports from the UE even if the quality of the neighboring cell is not better than that of the serving cell, or not good enough to trigger a handover. Even if the quality of the neighboring cell is much lower than that of the serving cell, the UE should switch to the neighboring cell before the serving cell is switched off if it is suitable for access. To do this, the UE needs to report the measurement results of neighboring cells whose measured quality is not as good as the current serving cell.

[0007] However, if many UEs are configured to report measurements of neighboring cells whose quality is much lower than that of the serving cell, measurement reports will be sent excessively and will not be useful on the network side until the cell decides to switch off.

[0008] Therefore, there is a need to study measurement reporting that takes network power saving into consideration in wireless communication systems.

[0009] Solution to the problem

[0010] In one aspect, a method performed by a wireless device in a wireless communication system is provided, the method comprising: receiving a reporting configuration associated with an activation indication from a network; considering the reporting configuration to be deactivated; activating the reporting configuration upon receiving the activation indication; and sending a measurement report to the network based on the reporting configuration.

[0011] In another aspect, a device for implementing the above method is provided.

[0012] Beneficial effects of the present invention

[0013] The present disclosure may have various beneficial effects.

[0014] According to some embodiments of the present disclosure, a wireless device may efficiently perform measurement reporting in consideration of network power saving.

[0015] For example, if many UEs are configured to report measurements of neighboring cells whose quality is much lower than that of the serving cell, measurement reports will be sent excessively and will not be useful on the network side until the cell decides to switch off.

[0016] For example, by allowing the UE to report the measurement results of neighboring cells with poor quality only when group measurement reporting is allowed, the signaling overhead caused by measurement reporting can be significantly reduced.

[0017] For example, when a cell is turned off, since wireless devices in the cell send measurement reports based on the cell-off specific reporting configuration, the wireless devices can efficiently move to another cell.

[0018] According to some embodiments of the present disclosure, a wireless communication system may provide an effective solution for measurement reporting that takes network power saving into consideration.

[0019] The beneficial effects that can be obtained by the specific embodiments of the present disclosure are not limited to the beneficial effects listed above. For example, there may be various technical effects that a person of ordinary skill in the relevant field can understand and / or derive from the present disclosure. Therefore, the specific effects of the present 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 the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An example of a communication system to which an implementation of the present disclosure is applied is shown.

[0021] Figure 2 An example of a wireless device to which an implementation of the present disclosure is applied is shown.

[0022] Figure 3An example of a wireless device to which an implementation of the present disclosure is applied is shown.

[0023] Figure 4 Another example of a wireless device to which implementations of the present disclosure are applied is shown.

[0024] Figure 5 An example of a UE to which an implementation of the present disclosure is applied is shown.

[0025] Figure 6 and Figure 7 An example of a protocol stack in a 3GPP-based wireless communication system to which implementations of the present disclosure are applied is shown.

[0026] Figure 8 The frame structure in a 3GPP-based wireless communication system to which the implementation of the present disclosure is applied is shown.

[0027] Figure 9 An example of data flow in a 3GPP NR system to which an implementation of the present disclosure is applied is shown.

[0028] Figure 10 An example of a measurement report to which an implementation of the present disclosure is applied is shown.

[0029] Figure 11 An example of a method for measurement reporting considering network power saving in a wireless communication system according to some embodiments of the present disclosure is shown.

[0030] Figure 12 An example of a method for conditional measurement reporting for network power saving is shown.

[0031] Figure 13 An example of a method for conditional measurement reporting for network power saving according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0032] The following techniques, devices, and systems can be applied to various wireless multiple access systems. Examples of multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and multi-carrier frequency division multiple access (MC-FDMA) systems. CDMA can be implemented 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), General Packet Radio Service (GPRS), or Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or Evolved UTRA (E-UTRA). UTRA is part of Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE adopts OFDMA in DL and SC-FDMA in UL. LTE-Advanced (LTE-A) is an evolved version of 3GPP LTE.

[0033] For ease of description, the implementation of the present disclosure is primarily described with respect to a 3GPP-based wireless communication system. However, the technical features of the present disclosure are not limited thereto. For example, although the following detailed description is given based on a mobile communication system corresponding to a 3GPP-based wireless communication system, aspects of the present disclosure that are not limited to 3GPP-based wireless communication systems are applicable to other mobile communication systems.

[0034] For terms and techniques not specifically described in the terms and techniques adopted in the present disclosure, reference may be made to wireless communication standard documents issued prior to the present disclosure.

[0035] In the present disclosure, "A or B" may mean "only A", "only B", or "both A and B". In other words, in the present disclosure, "A or B" may be interpreted as "A and / or B". For example, in the present disclosure, "A, B, or C" may mean "only A", "only B", "only C", or "any combination of A, B, and C".

[0036] In the present disclosure, a slash ( / ) or a comma (,) may mean "and / or". For example, "A / B" may mean "A and / or B". Thus, "A / B" may mean "only A", "only B", or "both A and B". For example, "A, B, C" may mean "A, B, or C".

[0037] In the present disclosure, “at least one of A and B” may mean “only A”, “only B”, or “both A and B”. In addition, the expression “at least one of A or B” or “at least one of A and / or B” in the present disclosure may be interpreted as being the same as “at least one of A and B”.

[0038] In addition, in the present disclosure, “at least one of A, B, and C” may mean “only A,” “only B,” “only C,” or “any combination of A, B, and C.” In addition, “at least one of A, B, or C” or “at least one of A, B, and / or C” may mean “at least one of A, B, and C.”

[0039] In addition, the brackets used in the present disclosure may mean "for example". In detail, when "control information (PDCCH)" is shown, "PDCCH" may be proposed as an example of "control information". In other words, in the present disclosure, "control information" is not limited to "PDCCH", and "PDCCH" may be proposed as an example of "control information". In addition, even when "control information (i.e., PDCCH)" is shown, "PDCCH" may be proposed as an example of "control information".

[0040] The technical features described separately in one figure in this disclosure can be implemented separately or simultaneously.

[0041] Although not limited thereto, the various descriptions, functions, processes, suggestions, methods and / or operational flowcharts of the present disclosure disclosed herein may be applied to various fields requiring wireless communication and / or connectivity between devices (e.g., 5G).

[0042] Hereinafter, the present disclosure will be described in more detail with reference to the accompanying drawings. Unless otherwise specified, the same reference numerals in the following drawings and / or descriptions may refer to the same and / or corresponding hardware blocks, software blocks and / or functional blocks.

[0043] Figure 1 An example of a communication system to which an implementation of the present disclosure is applied is shown.

[0044] exist Figure 1 The 5G usage scenarios shown in the present disclosure are only exemplary, and the technical features of the present disclosure can be applied to Figure 1 Other 5G usage scenarios shown in .

[0045] The three main demand categories for 5G include: (1) enhanced mobile broadband (eMBB) category, (2) massive machine type communication (mMTC) category, and (3) ultra-reliable and low-latency communication (URLLC) category.

[0046] Some use cases may require multiple categories for optimization, while others may focus on just one key performance indicator (KPI). 5G supports this variety of use cases using a flexible and reliable approach.

[0047] eMBB goes far beyond basic mobile internet access and covers rich two-way work and media and entertainment applications in the cloud and augmented reality. Data is one of the core driving forces of 5G, and for the first time in the 5G era, dedicated voice services may not be provided. In 5G, voice is expected to be simply processed as an application using the data connection provided by the communication system. The main reasons for the increase in service capacity are the increase in content size and the increase in the number of applications requiring high data transmission rates. As more and more devices connect to the internet, streaming services (audio and video), conversational video, and mobile internet access will become 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 special use case that is accelerating the growth of uplink data transmission rates. 5G is also used for remote work in the cloud. When using tactile interfaces, 5G requires much lower end-to-end latency to maintain a good user experience. Entertainment, such as cloud gaming and video streaming, is another core element that is increasing the demand for mobile broadband capabilities. Entertainment is essential for smartphones and tablets anywhere, including in highly mobile environments such as trains, cars, and airplanes. Another use case is augmented reality for entertainment and information search. In this case, augmented reality requires very low latency and instantaneous data capacity.

[0048] Furthermore, one of the most anticipated 5G use cases involves the ability to seamlessly connect embedded sensors across all fields, known as mMTC. It is expected that the number of potential Internet of Things (IoT) devices will reach 204 billion by 2020. Industrial IoT is one of the key categories that will play a major role in enabling smart cities, asset tracking, smart utilities, agriculture, and security infrastructure through 5G.

[0049] URLLC, which includes remote control and ultra-reliable / available low-latency links over the primary infrastructure, will transform new industrial services (such as autonomous vehicles). This level of reliability and latency is necessary to control smart grids, automate industry, enable robotics, and control and coordinate drones.

[0050] 5G is a means of providing streams estimated to be hundreds of megabits per second to gigabits per second, and can supplement fiber to the home (FTTH) and cable-based broadband (or DOCSIS). Such fast speeds are needed to deliver TV with a resolution of 4K or more (6K, 8K and more), as well as virtual reality and augmented reality. Virtual reality (VR) and augmented reality (AR) applications include almost immersive sports games. Specific applications may require special network configurations. For example, for VR games, game companies need to merge core servers into the network operator's edge network servers to minimize latency.

[0051] Automobiles, along with their numerous use cases for mobile communications, are expected to be a significant new driver for 5G. For example, passenger entertainment will require high simultaneous capacity and mobile broadband with high mobility. This is because future users will continue to expect high-quality connectivity, regardless of their location and speed. Another use case in the automotive sector is augmented reality (AR) dashboards. AR dashboards allow drivers to identify objects in the dark, in addition to those visible through the front window, and display distance to 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 (e.g., devices accompanying pedestrians). Safety systems will guide alternative routes, enabling drivers to drive more safely and thus 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 autonomous vehicles and between vehicles and infrastructure. In the future, autonomous vehicles will perform all driving activities, and drivers will only focus on unusual traffic events that the vehicle cannot identify. The technical requirements for autonomous vehicles require ultra-low latency and ultra-high reliability, increasing traffic safety to a level that cannot be achieved by humans.

[0052] Smart cities and smart homes / buildings, often referred to as smart societies, will be embedded in high-density wireless sensor networks. Distributed networks of smart sensors will identify conditions for cost- and energy-efficient maintenance in cities or homes. Similar configurations can be implemented for corresponding homes. All temperature sensors, window and heating controls, burglar alarms, and household appliances will be wirelessly connected. Many of these sensors are typically low in terms of data transmission rate, power, and cost. However, certain types of devices may require real-time HD video for monitoring.

[0053] The consumption and distribution of energy, including heat and gas, is becoming increasingly distributed, necessitating the automated control of distribution sensor networks. Smart grids collect information and use digital information and communication technologies to connect sensors to each other, thereby acting upon this information. Because this information can include the behavior of both supply companies and consumers, smart grids can improve the distribution of fuels such as electricity through methods that enhance efficiency, reliability, economic viability, sustainable production, and automation. Smart grids can also be considered another sensor network with low latency.

[0054] Mission-critical applications (e.g., e-health) are one of the 5G use cases. The health sector includes many applications that can benefit from mobile communications. Communication systems can support telemedicine, which provides clinical treatment in remote locations. Telemedicine can help reduce the barriers of distance and improve access to medical services that are not continuously available in remote rural areas. Telemedicine is also used to perform important treatments and save lives in emergency situations. Wireless sensor networks based on mobile communications can provide remote monitoring and sensors for parameters such as heart rate and blood pressure.

[0055] Wireless and mobile communications are becoming increasingly important in industrial applications. Cabling is expensive to install and maintain. Therefore, the potential to replace cables with reconfigurable radio links presents an attractive opportunity in many industrial sectors. However, to achieve this replacement, wireless connections must have similar latency, reliability, and capacity to cables, and their management must be simplified. When it comes to 5G connectivity, low latency and a very low probability of error are new requirements.

[0056] Logistics and freight tracking are important use cases for mobile communications, allowing inventory and packages to be tracked anywhere using location-based information systems. Logistics and freight tracking use cases typically require low data rates but require location information with wide range and reliability.

[0057] Reference Figure 1 , the communication system 1 includes wireless devices 100a to 100f, a base station (BS) 200, and a network 300. Figure 1 A 5G network is illustrated as an example of the network of the communication system 1 , but implementations of the present disclosure are not limited to the 5G system and may be applied to future communication systems other than the 5G system.

[0058] BS 200 and network 300 may be implemented as wireless devices, and certain wireless devices may operate as BSs / network nodes relative to other wireless devices.

[0059] Wireless devices 100a to 100f represent devices that perform communication using a radio access technology (RAT) (e.g., 5G New RAT (NR) or LTE) and may be referred to as communication / wireless / 5G devices. Wireless devices 100a to 100f may include, but are not limited to, a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an IoT device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with wireless communication capabilities, an autonomous vehicle, and a vehicle capable of performing communication between vehicles. A vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include AR / VR / mixed reality (MR) devices and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, and the like. Handheld devices can include smartphones, smart tablets, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., laptops). Home appliances can include TVs, refrigerators, and washing machines. IoT devices can include sensors and smart meters.

[0060] In the present disclosure, wireless devices 100a to 100f may be referred to as user equipment (UE). For example, UE may include a cellular phone, a smartphone, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a tablet-shaped personal computer (PC), a tablet PC, an ultrabook, a vehicle, a vehicle with an autonomous driving function, a connected car, a UAV, an AI module, a robot, an AR device, a VR device, an MR device, a hologram device, a public safety device, an MTC device, an IoT device, a medical device, a Fintech device (or a financial device), a security device, a weather / environmental device, a device related to 5G services, or a device related to the fourth industrial evolution field.

[0061] A UAV may be, for example, an aerial vehicle that is piloted by wireless control signals without a human on board.

[0062] VR devices may include, for example, devices for realizing objects or backgrounds in a virtual world. AR devices may include, for example, devices that realize this by connecting objects or backgrounds in a virtual world to objects or backgrounds in the real world. MR devices may include, for example, devices that realize this by merging objects or backgrounds in a virtual world into objects or backgrounds in the real world. Hologram devices may include, for example, devices for realizing 360-degree stereoscopic images by recording and reproducing stereoscopic information, which uses the interference phenomenon of light generated when two lasers meet, known as holographic imaging.

[0063] Public safety devices may include, for example, image relay devices or image devices wearable on a user's body.

[0064] MTC devices and IoT devices may be devices that do not require direct human intervention or manipulation, for example, and may include smart meters, vending machines, thermometers, smart light bulbs, door locks, or various sensors.

[0065] A medical device may be, for example, a device used for the purpose of diagnosing, treating, alleviating, curing, or preventing a disease. For example, a medical device may be a device used for the purpose of diagnosing, treating, alleviating, or correcting an injury or damage. For example, a medical device may be a device used for the purpose of inspecting, replacing, or modifying a structure or function. For example, a medical device may be a device used for the purpose of regulating pregnancy. For example, a medical device may include a device for treatment, a device for operation, a device for (in vitro) diagnosis, a hearing aid, or a device for surgery.

[0066] The safety device may be, for example, a device installed to prevent possible danger and maintain safety. For example, the safety device may be a camera, a closed-circuit TV (CCTV), a recorder, or a black box.

[0067] A Fintech device may be, for example, a device that can provide financial services such as mobile payments. For example, a Fintech device may include a payment device or a point of sale (POS) system.

[0068] Weather / environmental devices may include, for example, devices for monitoring or predicting weather / environmental conditions.

[0069] Wireless devices 100a to 100f can connect to network 300 via BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect to AI server 400 via network 300. Network 300 can be configured using 3G networks, 4G (e.g., LTE) networks, 5G (e.g., NR) networks, and beyond 5G networks. Although wireless devices 100a to 100f can communicate with each other via BS 200 / network 300, wireless devices 100a to 100f can perform direct communication (e.g., sidelink communication) with each other without going through BS 200 / network 300. 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.

[0070] Wireless communications / connections 150a, 150b, and 150c may be established between wireless devices 100a to 100f and / or between wireless devices 100a to 100f and BS 200 and / or between BSs 200. Here, wireless communications / connections may be established via various RATs (e.g., 5G NR), such as uplink / downlink communication 150a, sidelink communication (or device-to-device (D2D) communication) 150b, and inter-base station communication 150c (e.g., relay, integrated access and backhaul (IAB)). Wireless devices 100a to 100f and BS 200 / wireless devices 100a to 100f may transmit / receive radio signals to / from each other via wireless communications / connections 150a, 150b, and 150c. For example, wireless communications / connections 150a, 150b, and 150c may transmit / receive signals via various physical channels. To this end, various configuration information configuration processes for sending / receiving radio signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and at least a portion of the resource allocation process can be performed based on the various proposals of the present disclosure.

[0071] Here, the radio communication technology implemented in the wireless device in the present disclosure may include narrowband Internet of Things (NB-IoT) technology for low-power communication as well as LTE, NR and 6G. For example, NB-IoT technology may be an example of low-power wide area network (LPWAN) technology, may be implemented in specifications such as LTE Cat NB1 and / or LTE Cat NB2, and may not be limited to the above names. Additionally and / or alternatively, the radio communication technology implemented in the wireless device in the present disclosure may communicate based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and may be referred to as 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 above names. Additionally and / or alternatively, the radio communication technology implemented in the wireless device of the present disclosure may include at least one of ZigBee, Bluetooth, and / or LPWAN, which are considered low-power communication technologies, and may not be limited to the above names. For example, ZigBee technology can generate a personal area network (PAN) associated with small / low-power digital communication based on various specifications such as IEEE 802.15.4, and may be referred to by various names.

[0072] Figure 2An example of a wireless device to which an implementation of the present disclosure is applied is shown.

[0073] Reference Figure 2 , the first wireless device 100 and the second wireless device 200 can transmit / receive radio signals to / from an external device through various RATs (eg, LTE and NR). Figure 2 In the example, {first wireless device 100 and second wireless device 200} may correspond to the attached 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}.

[0074] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may also include one or more transceivers 106 and / or one or more antennas 108. The processor 102 may control the memory 104 and / or the transceiver 106 and may be configured to implement the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts described in this disclosure. For example, the processor 102 may process information within the memory 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the transceiver 106. The processor 102 may receive a radio signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory 104. The memory 104 may be connected to the processor 102 and may store various information related to the operation of the processor 102. For example, the memory 104 may store software code including commands for executing part or all of the processes controlled by the processor 102 or for executing the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts described in this disclosure. In this document, the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and / or receive radio signals via one or more antennas 108. Each of the transceivers 106 may include a transmitter and / or a receiver. The transceiver 106 may be used interchangeably with a radio frequency (RF) unit. In this disclosure, the first wireless device 100 may represent a communication modem / circuit / chip.

[0075] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may also include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206 and may be configured to implement the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts described in this disclosure. For example, the processor 202 may process information within the memory 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver 206. The processor 202 may receive a radio signal including fourth information / signals through the transceiver 106, and then store information obtained by processing the fourth information / signals in the memory 204. The memory 204 may be connected to the processor 202 and may store various information related to the operation of the processor 202. For example, the memory 204 may store software code including commands for executing part or all of the processes controlled by the processor 202 or for executing the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts described in this disclosure. Herein, the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and / or receive radio signals via one or more antennas 208. Each of the transceivers 206 may include a transmitter and / or a receiver. The transceiver 206 may be used interchangeably with an RF unit. In the present disclosure, the second wireless device 200 may represent a communication modem / circuit / chip.

[0076] In the following, the hardware elements of the wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by, but not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as a physical (PHY) layer, a medium access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer, and a service data adaptation protocol (SDAP) layer). According to the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts disclosed in the present disclosure, 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). One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts disclosed in the present disclosure. The one or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, an SDU, a message, control information, data, or information according to the description, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed in the present disclosure, and provide the generated signal to the one or more transceivers 106 and 206. The one or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from the one or more transceivers 106 and 206, and obtain the PDU, SDU, message, control information, data, or information according to the description, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed in the present disclosure.

[0077] 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. As an example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, suggestions, methods, and / or operational 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 operational 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, thereby being driven by one or more processors 102 and 202. The descriptions, functions, processes, suggestions, methods and / or operational flowcharts disclosed in this disclosure may be implemented using firmware or software in the form of codes, commands and / or command sets.

[0078] 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, codes, instructions and / or commands. One or more memories 104 and 204 can be configured by read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cache memory, computer-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 by various technologies such as wired or wireless connections.

[0079] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels as described in the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts disclosed in this disclosure to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels as described in the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts disclosed in this disclosure from one or more other devices. For example, one or more transceivers 106 and 206 may 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 may control the one or more transceivers 106 and 206 to transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may control the one or more transceivers 106 and 206 to receive user data, control information, or radio signals from one or more other devices.

[0080] One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and the one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts disclosed in the present disclosure through the one or more antennas 108 and 208. In the present disclosure, the one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports).

[0081] One or more transceivers 106 and 206 may convert received radio signals / channels, etc., from RF band signals to baseband signals in order to process received user data, control information, radio signals / channels, etc. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc., processed using one or more processors 102 and 202, from baseband signals to RF band signals. To this end, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters. For example, under the control of processors 102 and 202, transceivers 106 and 206 may up-convert an OFDM baseband signal to a carrier frequency using their (analog) oscillators and / or filters, and transmit the up-converted OFDM signal at the carrier frequency. Transceivers 106 and 206 may receive an OFDM signal at a carrier frequency and, under the control of processors 102 and 202, down-convert the OFDM signal to an OFDM baseband signal using their (analog) oscillators and / or filters.

[0082] In implementations of the present disclosure, a UE may operate as a transmitting device in the uplink (UL) and as a receiving device in the downlink (DL). In implementations of the present disclosure, a base station (BS) may 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 acts as a UE and the second wireless device 200 acts as a base station (BS). For example, the processor 102 connected to, installed on, or activated in the first wireless device 100 may be configured to perform UE behavior according to implementations of the present disclosure, or to control the transceiver 106 to perform UE behavior according to implementations of the present disclosure. The processor 202 connected to, installed on, or activated in the second wireless device 200 may be configured to perform BS behavior according to implementations of the present disclosure, or to control the transceiver 206 to perform BS behavior according to implementations of the present disclosure.

[0083] In this disclosure, a BS is also referred to as a Node B (NB), an eNodeB (eNB), or a gNB.

[0084] Figure 3 An example of a wireless device to which an implementation of the present disclosure is applied is shown.

[0085] The wireless device may be implemented in various forms depending on the use case / service (see Figure 1 ).

[0086] Reference Figure 3 , the wireless devices 100 and 200 may correspond to Figure 2 The wireless devices 100 and 200 may be configured by 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, the transceiver 114 may include Figure 2 One or more transceivers 106 and 206 and / or Figure 2The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional components 140, and controls the overall operation of each of the wireless devices 100 and 200. For example, the control unit 120 can control the electrical / mechanical operation of each of the wireless devices 100 and 200 based on the program / code / command / information stored in the memory unit 130. The control unit 120 can transmit information stored in the memory unit 130 to the outside (e.g., other communication devices) through a wireless / wired interface via the communication unit 110, or store information received from the outside (e.g., other communication devices) through a wireless / wired interface in the memory unit 130 via the communication unit 110.

[0087] The additional component 140 may be configured differently depending on the type of the wireless devices 100 and 200. For example, the additional component 140 may include at least one of a power supply unit / battery, an input / output (I / O) unit (e.g., an audio I / O port, a video I / O port), a driving unit, and a computing unit. The wireless devices 100 and 200 may be configured in the form of, but not limited to, robots ( Figure 1 100a), vehicles ( Figure 1 100b-1 and 100b-2), XR devices ( Figure 1 100c), handheld device ( Figure 1 100d), household appliances ( Figure 1 100e), IoT devices ( Figure 1 100f), digital broadcast terminal, hologram device, public safety device, MTC device, medical device, Fintech device (or financial device), security device, climate / environmental device, AI server / device ( Figure 1 400), BSS( Figure 1 The wireless devices 100 and 200 may be implemented in the form of a mobile or fixed location, depending on the use case / service.

[0088] exist Figure 3In the wireless devices 100 and 200, the various elements, components, units / parts, and / or modules in their entirety may be connected to each other via a wired interface, or at least a portion thereof may be wirelessly connected via the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be connected via a wired interface, and the control unit 120 and the first unit (e.g., 130 and 140) may be wirelessly connected via the communication unit 110. Each element, component, unit / part, and / or module within the wireless devices 100 and 200 may also include one or more elements. For example, the control unit 120 may be configured by a group of one or more processors. As an example, the control unit 120 may be configured by a group of a communication control processor, an application processor (AP), an electronic control unit (ECU), a graphics processing unit, and a memory control processor. As another example, the memory unit 130 may be configured by RAM, DRAM, ROM, flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0089] Figure 4 Another example of a wireless device to which implementations of the present disclosure are applied is shown.

[0090] Reference Figure 4 , the wireless devices 100 and 200 may correspond to Figure 2 The wireless devices 100 and 200 may be configured by various elements, components, units / portions and / or modules.

[0091] First wireless device 100 may include at least one transceiver, such as transceiver 106, and at least one processing chip, such as processing chip 101. Processing chip 101 may include at least one processor, such as processor 102, and at least one memory, such as memory 104. Memory 104 may be operably connected to processor 102. Memory 104 may store various types of information and / or instructions. Memory 104 may store software code 105 that, when executed by processor 102, implements instructions for performing the descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed in this disclosure. For example, software code 105 may implement instructions for performing the descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed in this disclosure, when executed by processor 102. For example, software code 105 may control processor 102 to execute one or more protocols. For example, software code 105 may control processor 102 to execute one or more layers of a radio interface protocol.

[0092] The second wireless device 200 may include at least one transceiver, such as transceiver 206, and at least one processing chip, such as processing chip 201. Processing chip 201 may include at least one processor, such as processor 202, and at least one memory, such as memory 204. Memory 204 may be operably connected to processor 202. Memory 204 may store various types of information and / or instructions. Memory 204 may store software code 205 that, when executed by processor 202, implements instructions for performing the descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed in this disclosure. For example, software code 205 may implement instructions for performing the descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed in this disclosure, when executed by processor 202. For example, software code 205 may control processor 202 to execute one or more protocols. For example, software code 205 may control processor 202 to execute one or more layers of a wireless interface protocol.

[0093] Figure 5 An example of a UE to which an implementation of the present disclosure is applied is shown.

[0094] Reference Figure 5 , UE 100 may correspond to the attached Figure 2 The first wireless device 100 and / or Figure 4 The first wireless device 100 is configured to:

[0095] UE 100 includes a processor 102 , memory 104 , a transceiver 106 , one or more antennas 108 , a power management module 110 , a battery 1112 , a display 114 , a keypad 116 , a subscriber identity module (SIM) card 118 , a speaker 120 , and a microphone 122 .

[0096] The processor 102 may be configured to implement the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts disclosed in the present disclosure. The processor 102 may be configured to control one or more other components of the UE 100 to implement the descriptions, functions, processes, suggestions, methods, and / or operational flowcharts disclosed in the present disclosure. The layers of the radio interface protocol may be implemented in the processor 102. The processor 102 may include an ASIC, other chipsets, logic circuits, and / or data processing devices. The processor 102 may be an application processor. The processor 102 may include at least one of a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), and a modem (modulator and demodulator). Examples of the processor 102 may be found in SNAPDRAGON MANUFACTURED TM series processors, Manufactured by EXYNOSTM series processors, A series processors manufactured by HELIO manufactured TM series processors, ATOM manufactured TM series processors or corresponding to the next generation processors.

[0097] The memory 104 is operatively coupled to the processor 102 and stores a variety of information to operate the processor 102. The memory 104 may include ROM, RAM, flash memory, a memory card, a storage medium, and / or other storage devices. When the embodiment is implemented in software, the techniques described herein may be implemented with modules (e.g., processes, functions, etc.) that execute the descriptions, functions, processes, suggestions, methods, and / or operational flow charts disclosed in this disclosure. The modules may be stored in the memory 104 and executed by the processor 102. The memory 104 may be implemented within the processor 102 or external to the processor 102, in which case the memory 104 may be communicatively coupled to the processor 102 via various means known in the art.

[0098] The transceiver 106 is operatively coupled to the processor 102 and transmits and / or receives radio signals. The transceiver 106 includes a transmitter and a receiver. The transceiver 106 may include baseband circuitry for processing radio frequency signals. The transceiver 106 controls one or more antennas 108 to transmit and / or receive radio signals.

[0099] The power management module 110 manages power to the processor 102 and / or the transceiver 106. The power management module 110 is powered by a battery 112.

[0100] The display 114 outputs the results processed by the processor 102. The keyboard 116 receives input to be used by the processor 102. The keyboard 116 may be displayed on the display 114.

[0101] The SIM card 118 is an integrated circuit designed to securely store an International Mobile Subscriber Identity (IMSI) number and its associated keys, which are used to identify and authenticate subscribers on mobile telephony devices such as mobile phones and computers. Contact information can also be stored on many SIM cards.

[0102] The speaker 120 outputs sound-related results processed by the processor 102. The microphone 122 receives sound-related input to be used by the processor 102.

[0103] Figure 6 and Figure 7 An example of a protocol stack in a 3GPP-based wireless communication system to which implementations of the present disclosure are applied is shown.

[0104] Specifically, Figure 6 illustrates an example of a radio interface user plane protocol stack between a UE and a BS, and Figure 7 An example of a radio interface control plane protocol stack between a UE and a BS is illustrated. The control plane refers to a path through which control messages for managing calls between the UE and the network are transmitted. The user plane refers to a path through which data generated in the application layer (for example, voice data or Internet packet data) is transmitted. Figure 6 , the user plane protocol stack can be divided into layer 1 (ie, PHY layer) and layer 2. Figure 7 , the control plane protocol stack can be divided into layer 1 (ie, PHY layer), layer 2, layer 3 (eg, RRC layer) and non-access stratum (NAS) layer. Layer 1, layer 2 and layer 3 are called access stratum (AS).

[0105] In 3GPP LTE systems, Layer 2 is divided into the following sublayers: MAC, RLC, and PDCP. In 3GPP NR systems, Layer 2 is divided into the following sublayers: MAC, RLC, PDCP, and SDAP. The PHY layer provides transport channels to the MAC sublayer, the MAC sublayer provides logical channels to the RLC sublayer, the RLC sublayer provides RLC channels to the PDCP sublayer, and the PDCP sublayer provides radio bearers to the SDAP sublayer. The SDAP sublayer provides Quality of Service (QoS) flows to the 5G core network.

[0106] In 3GPP NR systems, the main services and functions of the MAC sublayer include: mapping between logical channels and transport channels; multiplexing / demultiplexing MAC SDUs belonging to one or different logical channels onto / from transport blocks (TBs) delivered to / from the physical layer on transport channels; scheduling information reporting; error correction through hybrid automatic repeat request (HARQ) (one HARQ entity per cell in the case of carrier aggregation (CA); priority handling between UEs through dynamic scheduling; priority handling between logical channels of a UE through logical channel prioritization; and padding. A single MAC entity can support multiple parameter sets, transmission timings, and cells. Mapping restrictions in logical channel prioritization control which parameter set(s), cell, and transmission timing a logical channel can use.

[0107] MAC provides different types of data transfer services. To accommodate different types of data transfer services, multiple types of logical channels are defined, that is, each logical channel supports the transmission of a specific type of information. Each logical channel type is defined by the type of information transmitted. Logical channels are divided into two groups: control channels and traffic channels. Control channels are used only for the transmission of control plane information, and traffic channels are used only for the transmission of user plane information. The Broadcast Control Channel (BCCH) is a downlink logical channel used to broadcast system control information, the Paging Control Channel (PCCH) is a downlink logical channel that transmits paging information, system information change notifications, and indications of ongoing Public Warning Service (PWS) broadcasts, the Common Control Channel (CCCH) is a logical channel used to send control information between the UE and the network and is used by UEs that do not have an RRC connection with the network, and the Dedicated Control Channel (DCCH) is a point-to-point bidirectional logical channel that sends dedicated control information between the UE and the network and is used by UEs with an RRC connection. The Dedicated Traffic Channel (DTCH) is a point-to-point logical channel dedicated to one UE and is used to transmit user information. The DTCH can exist in both the uplink and downlink. In the downlink, the following connections exist between logical channels and transport channels: BCCH can be mapped to the broadcast channel (BCH); BCCH can be mapped to the downlink shared channel (DL-SCH); PCCH can be mapped to the paging channel (PCH); CCCH can be mapped to DL-SCH; DCCH can be mapped to DL-SCH; and DTCH can be mapped to DL-SCH. In the uplink, the following connections exist between logical channels and transport channels: CCCH can be mapped to the uplink shared channel (UL-SCH); DCCH can be mapped to UL-SCH; and DTCH can be mapped to UL-SCH.

[0108] The RLC sublayer supports three transmission modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). The RLC configuration is per logical channel, without dependency on parameter sets and / or transmission duration. In 3GPP NR systems, the main services and functions of the RLC sublayer depend on the transmission mode and include: delivery of upper layer PDUs; sequence numbering independent of sequence numbering in PDCP (UM and AM); error correction through ARQ (AM only); segmentation (AM and UM) and re-segmentation (AM only) of RLC SDUs; reassembly of SDUs (AM and UM); duplicate detection (AM only); RLC SDU discard (AM and UM); RLC re-establishment; and protocol error detection (AM only).

[0109] In the 3GPP NR system, the main services and functions of the PDCP sublayer for the user plane include: sequence numbering; header compression and decompression using Robust Header Compression (ROHC); delivery of user data; reordering and duplicate detection; in-sequence delivery; PDCP PDU routing (in the case of split bearers); retransmission of PDCP SDUs; ciphering, deciphering, and integrity protection; PDCP SDU discard; PDCP re-establishment and data recovery for RLC AM; PDCP status reporting for RLC AM; PDCP PDU duplication and duplicate discard indication to lower layers. The main services and functions of the PDCP sublayer for the control plane include: sequence numbering; ciphering, deciphering, and integrity protection; delivery of control plane data; reordering and duplicate detection; in-sequence delivery; PDCP PDU duplication and duplicate discard indication to lower layers.

[0110] In 3GPP NR systems, the main services and functions of SDAP include: mapping between QoS flows and data radio bearers; marking QoS flow IDs (QFIs) in both DL and UL packets. A single protocol entity of SDAP is configured for each individual PDU session.

[0111] In the 3GPP NR system, the main services and functions of the RRC sublayer include: broadcast of system information related to AS and NAS; paging initiated by 5GC or NG-RAN; establishment, maintenance and release of RRC connections between UE and NG-RAN; security functions including key management; establishment, configuration, maintenance and release of signaling radio bearers (SRBs) and data radio bearers (DRBs); mobility functions (including handover and context transfer, UE cell selection and reselection and control of cell selection and reselection, and inter-RAT mobility); QoS management functions; UE measurement reporting and control of reporting; detection and recovery of radio link failure; and NAS message transmission from UE to NAS / from NAS to UE.

[0112] Figure 8 The frame structure in a 3GPP-based wireless communication system to which the implementation of the present disclosure is applied is shown.

[0113] Figure 8The frame structure shown in is merely exemplary, and the number of subframes, the number of time slots, and / or the number of symbols in a frame may vary. In a 3GPP-based wireless communication system, OFDM parameter sets (e.g., subcarrier spacing (SCS), transmission time interval (TTI) duration) may be configured differently between multiple cells aggregated for one UE. For example, if a UE is configured with different SCSs for cells aggregated for a cell, the (absolute time) duration of time resources (e.g., subframes, time slots, or TTIs) comprising the same number of symbols may be different among the aggregated cells. In this document, the symbols may include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbols).

[0114] Reference Figure 8 , downlink and uplink transmissions are organized into frames. Each frame has T f = 10ms duration. Each frame is divided into two half-frames, where each half-frame has a duration of 5ms. Each half-frame includes 5 sub-frames, where the duration of each sub-frame is T sf is 1 ms. Each subframe is divided into slots, and the number of slots in a subframe depends on the subcarrier spacing. Each slot includes 14 or 12 OFDM symbols based on the cyclic prefix (CP). In normal CP, each slot includes 14 OFDM symbols, and in extended CP, each slot includes 12 OFDM symbols. The parameter set is based on an exponentially scalable subcarrier spacing Δf=2 u *15kHz.

[0115] Table 1 shows the subcarrier spacing Δf=2 u *N, the number of OFDM symbols per time slot of 15kHz slot symb , the number of time slots per frame N frame,u slot , and the number of slots N per subframe for normal CP subframe,u slot .

[0116] [Table 1]

[0117] u <![CDATA[N slot symb ]]> <![CDATA[N frame,u slot ]]> <![CDATA[N subframe，u slot ]]> 0 14 10 1 1 14 20 2 2 14 40 4 3 14 80 8 4 14 160 16

[0118] Table 2 shows the subcarrier spacing Af=2 u *N, the number of OFDM symbols per time slot of 15kHz slot symb , the number of time slots per frame N frame,u slot , and the number of slots N per subframe for the extended CPsubframe,u slot .

[0119] [Table 2]

[0120] u <![CDATA[N slot symb ]]> <![CDATA[N frame,u slot ]]> <![CDATA[N subframe，u slot ]]> 2 12 40 4

[0121] A slot includes multiple symbols (e.g., 14 or 12 symbols) in the time domain. For each parameter set (e.g., subcarrier spacing) and carrier, a common resource block (CRB) N is allocated from the CRBs indicated by higher layer signaling (e.g., RRC signaling). start,u grid To begin, define N size，u grid，x *N RB sc subcarriers and N subframe,u symb OFDM symbol resource grid, where N size,u grid,x N is the number of resource blocks (RBs) in the resource grid, with the subscript x being DL for downlink and UL for uplink. RB sc is the number of subcarriers per RB. In 3GPP-based wireless communication systems, N RB sc Typically 12. For a given antenna port p, subcarrier spacing configuration u, and transmission direction (DL or UL), there is one resource grid. The carrier bandwidth N for subcarrier spacing configuration u is size,u grid Given by higher-layer parameters (e.g., RRC parameters). Each element in the resource grid for antenna port p and subcarrier spacing configuration u is called a resource element (RE), and one complex symbol can be mapped to each RE. Each RE in the resource grid is uniquely identified by an index k in the frequency domain and an index 1 representing the symbol position relative to a reference point in the time domain. In a 3GPP-based wireless communication system, an RB is defined by 12 consecutive subcarriers in the frequency domain.

[0122] In 3GPP NR systems, RBs are classified into CRBs and physical resource blocks (PRBs). CRBs are numbered upwards from 0 in the frequency domain for subcarrier spacing configuration u. The center of subcarrier 0 of CRB 0 for subcarrier spacing configuration u coincides with "point A", which is used as a common reference point for the resource block grid. In 3GPP NR systems, PRBs are defined within bandwidth parts (BWPs) and are numbered from 0 to N. size BWP，i-1 where i is the number of the bandwidth part. Physical resource block n in bandwidth part i PRB With public resource block n CRB The relationship between them is as follows:PRB =n CRB +N size BWP,i , where N size BWP，i A BWP is a common resource block that begins with CRB 0. A BWP consists of multiple contiguous RBs. A carrier can include up to N (e.g., 5) BWPs. A UE can be configured with one or more BWPs on a given component carrier. Of the BWPs configured for a UE, only one can be active at a time. The active BWP defines the UE's operating bandwidth within the cell's operating bandwidth.

[0123] The NR frequency band can be defined as two types of frequency ranges, namely, FR1 and FR2. The numerical values of the frequency ranges can be changed. For example, the two types of frequency ranges (FR1 and FR2) can be shown in Table 3 below. For ease of explanation, in the frequency range used in the NR system, FR1 can represent "below 6 GHz range", FR2 can represent "above 6 GHz range" and can be referred to as millimeter wave (mmW).

[0124] [Table 3]

[0125]

[0126]

[0127] As described above, the numerical value of the frequency range of the NR system can be changed. For example, FR1 can include a frequency band of 410 MHz to 7125 MHz, as shown in Table 4 below. That is, FR1 can include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or larger. For example, the frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or larger included in FR1 can include an unlicensed frequency band. The unlicensed frequency band can be used for various purposes, such as for communication in vehicles (e.g., autonomous driving).

[0128] [Table 4]

[0129] Frequency range name Corresponding frequency range Subcarrier spacing FR1 410MHz-7125MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0130] In the present disclosure, the term "cell" may refer to a geographical area where one or more nodes provide a communication system or to a radio resource. A "cell" as a geographical area may be understood as a coverage area within which a node can provide services using a carrier, and a "cell" as a radio resource (e.g., a time-frequency resource) is associated with a bandwidth, which is a frequency range configured by a carrier. A "cell" associated with a radio resource is defined by a combination of downlink resources and uplink resources (e.g., a combination of a DL component carrier (CC) and a UL CC). A cell may be configured only by downlink resources, or by downlink resources and uplink resources. Since the DL coverage (which is the range within which a node can send a valid signal) and the UL coverage (which is the range within which a node can receive a valid signal from a UE) depend on the carrier carrying the signal, the coverage of a node may be associated with the coverage of a "cell" of the radio resource used by the node. Therefore, the term "cell" may be used to sometimes refer to the service coverage of a node, to refer to a radio resource at other times, or to refer to the range within which a signal using a radio resource can reach with effective strength at other times.

[0131] In CA, two or more CCs are aggregated. The UE can receive or transmit on one or more CCs simultaneously depending on its capabilities. CA is supported for both contiguous CCs and non-contiguous CCs. When CA is configured, the UE has only one RRC connection with the network. During RRC connection establishment / reestablishment / handover, one serving cell provides NAS mobility information, and during RRC connection reestablishment / handover, one serving cell provides security input. This cell is called a primary cell (PCell). A PCell is a cell operating on the primary frequency, where the UE performs an initial connection establishment procedure or initiates a connection reestablishment procedure. Depending on the UE capabilities, a secondary cell (SCell) can be configured to form a set of serving cells together with the PCell. An SCell is a cell that provides additional radio resources on top of a special cell (PCell). Therefore, the set of configured serving cells for a UE always consists of one PCell and one or more SCells. For dual connectivity (DC) operation, the term "PCell" refers to the PCell of a primary cell group (MCG) or the primary SCell (PSCell) of a secondary cell group (SCG). SpCell supports PUCCH transmission and contention-based random access and is always activated. MCG is a set of serving cells associated with the master node, which includes SpCell (PCell) and optionally one or more SCells. For UEs configured with DC, SCG is a subset of serving cells associated with the secondary node, which includes PSCell and zero or more SCells. For UEs in RRC_CONNECTED that are not configured with CA / DC, there is only one serving cell consisting of PCell. For UEs in RRC_CONNECTED that are configured with CA / DC, the term "serving cell" is used to refer to the set of cells consisting of SpCell and all SCells. In DC, two MAC entities are configured in the UE: one for MCG and one for SCG.

[0132] Figure 9 An example of data flow in a 3GPP NR system to which an implementation of the present disclosure is applied is shown.

[0133] Reference Figure 9 "RB" stands for radio bearer, and "H" stands for header. Radio bearers are categorized into two groups: DRBs for user plane data and SRBs for control plane data. MAC PDUs are transmitted and received to and from external devices via the PHY layer using radio resources. MAC PDUs arrive at the PHY layer in the form of transport blocks.

[0134] In the PHY layer, the uplink transport channels UL-SCH and RACH are mapped to their physical channels PUSCH and PRACH, respectively, and the downlink transport channels DL-SCH, BCH and PCH are mapped to PDSCH, PBCH and PDSCH, respectively. In the PHY layer, uplink control information (UCI) is mapped to the physical PUCCH, and downlink control information (DCI) is mapped to the PDCCH. The MAC PDU associated with the UL-SCH is sent by the UE via the PUSCH based on the UL grant, and the MAC PDU associated with the DL-SCH is sent by the BS via the PDSCH based on the DL assignment.

[0135] The following describes technical features related to measurement. Reference may be made to Section 5.5 of 3GPP TS 38.331 v17.2.0.

[0136] The network may configure an RRC_CONNECTED UE to perform measurements. The network may configure the UE to report them according to the measurement configuration or to perform conditional reconfiguration evaluation according to the conditional reconfiguration. The measurement configuration is provided by means of dedicated signaling (i.e. using RRCReconfiguration or RRCResume).

[0137] The network can configure the UE to perform the following types of measurements:

[0138] -NR measurement;

[0139] - Inter-RAT measurement of E-UTRA frequencies;

[0140] -Inter-RAT measurement of UTRA-FDD frequencies;

[0141] -NR sidelink measurements for L2 U2N relay UEs.

[0142] The network can configure the UE to report the following measurement information based on the SS / PBCH block:

[0143] -Measurement results per SS / PBCH block;

[0144] - Per-cell measurement results based on SS / PBCH blocks;

[0145] -SS / PBCH block index.

[0146] The network can configure the UE to report the following measurement information based on the CSI-RS resource:

[0147] - Measurement results for each CSI-RS resource;

[0148] - Per-cell measurement results based on CSI-RS resources;

[0149] -CSI-RS resource measurement identifier.

[0150] The network can configure the UE to perform the following types of measurements for the NR sidelink and V2X sidelink:

[0151] -CBR measurement.

[0152] The network can configure the UE to report the following CLI measurement information based on SRS resources:

[0153] -Measurement results for each SRS resource;

[0154] -SRS resource index.

[0155] The network can configure the UE to report the following CLI measurement information based on the CLI-RSSI resource:

[0156] - Measurement results for each CLI-RSSI resource;

[0157] -CLI-RSSI resource index.

[0158] The network may configure the UE to report the following Rx-Tx time difference measurement information based on the CSI-RS or PRS used for tracking:

[0159] -UE Rx-Tx time difference measurement results.

[0160] The measurement configuration includes the following parameters:

[0161] 1. Measurement objects: A list of objects on which the UE should perform measurements.

[0162] For intra-frequency and inter-frequency measurements, the measurement object indicates the frequency / time location and subcarrier spacing of the reference signal to be measured. Associated with this measurement object, the network can configure a list of cell-specific offsets, a list of "excluded" cells, and a list of "allowed" cells. Excluded cells are not eligible for event evaluation or measurement reporting. Allowed cells are the only cells eligible for event evaluation or measurement reporting.

[0163] -The measObjectId corresponding to the MO of each serving cell is indicated by servingCellMO within the serving cell configuration.

[0164] -For inter-RAT E-UTRA measurements, the measurement object is a single E-UTRA carrier frequency. Associated with this E-UTRA carrier frequency, the network can configure a list of cell-specific offsets and a list of "excluded" cells. Excluded cells are not applicable for event evaluation or measurement reporting.

[0165] - For inter-RAT UTRA-FDD measurements, the measurement object is a group of cells on a single UTRA-FDD carrier frequency.

[0166] -For NR sidelink measurement of L2 U2N relay UE, the measurement object is a single NR sidelink frequency to be measured.

[0167] -For CBR measurement of NR sidelink communication, the measurement object is a set of transmission resource pools on a single carrier frequency used for NR sidelink communication.

[0168] For CBR measurement of NR sidelink discovery, the measurement object is the set of discovery-dedicated resource pools or transmission resource pools also used for NR sidelink discovery on a single carrier frequency used for NR sidelink discovery.

[0169] - For CLI measurement, the measurement object indicates the frequency / time location of the SRS resources and / or CLI-RSSI resources and the subcarrier spacing of the SRS resources to be measured.

[0170] 2. Report configuration: Each measurement object can have a report configuration list of one or more report configurations. Each measurement report configuration consists of the following:

[0171] -Reporting criteria: The criteria that triggers the UE to send measurement reports. This can be periodic or a single event description.

[0172] -RS type: RS (SS / PBCH block or CSI-RS) used by the UE for beam and cell measurement results.

[0173] - Reporting format: The per-cell and per-beam quantities (e.g. RSRP) that the UE includes in the measurement report along with other relevant information, such as the maximum number of cells to report and the maximum number of beams per cell.

[0174] In the case of conditional reconfiguration, each configuration consists of the following:

[0175] - Execution Criteria: The criteria used by the UE for conditional reconfiguration execution.

[0176] RS type: RS used by the UE to obtain beam and cell measurement results (based on SS / PBCH blocks or CSI-RS). This RS is used to evaluate the conditional reconfiguration execution conditions.

[0177] 3. Measurement Identifiers: For measurement reporting, a list of measurement identifiers, each linking one measurement object to one reporting configuration. By configuring multiple measurement identifiers, it is possible to link more than one measurement object to the same reporting configuration, as well as linking more than one reporting configuration to the same measurement object. The measurement identifier is also included in the measurement report that triggers the report, serving as a reference to the network. For conditional reconfiguration triggering, one measurement identifier is linked to exactly one conditional reconfiguration trigger configuration. Up to two measurement identifiers can be linked to one conditional reconfiguration execution condition.

[0178] 4. Quantity Configuration: A quantity configuration defines the measurement filter configuration used for all event evaluation and related reporting, as well as the periodic reporting for that measurement. For NR measurements, the network can configure up to two quantity configurations, with the configuration to be used referenced in the NR measurement object. Within each configuration, different filter coefficients can be configured for different measurement quantities, different RS types, and per-cell and per-beam measurements.

[0179] 5. Measurement gap: A period during which the UE can perform measurements.

[0180] A UE in RRC_CONNECTED maintains a measurement object list, a reporting configuration list, and a measurement identity list according to the signaling and procedures described in this specification. The measurement object list may include NR measurement objects, CLI measurement objects, inter-RAT objects, and L2 U2N relay objects. Similarly, the reporting configuration list includes NR, inter-RAT, and L2 U2N relay reporting configurations. Any measurement object can be linked to any reporting configuration of the same RAT type. Some reporting configurations may not be linked to a measurement object. Similarly, some measurement objects may not be linked to a reporting configuration.

[0181] The measurement process distinguishes between the following types of cells:

[0182] 1. NR serving cells - these are the SpCell and one or more SCells.

[0183] 2. Listed cells - These are the cells listed within the measurement object.

[0184] 3. Detected cells - These are cells that are not listed within the measurement object but are detected by the UE on the SSB frequency and subcarrier spacing indicated by the measurement object.

[0185] For NR measurement objects, the UE measures and reports on the serving cell / serving relay UE (for L2 U2N remote UEs), the listed cells, and / or detected cells. For inter-RAT measurement objects for E-UTRA, the UE measures and reports on the listed cells and detected cells, and for RSSI and channel occupancy measurements, the UE measures and reports on the configured resources on the indicated frequencies. For inter-RAT measurement objects for UTRA-FDD, the UE measures and reports on the listed cells. For CLI measurement objects, the UE measures and reports on the configured measurement resources (i.e., SRS resources and / or CLI-RSSI resources). For L2 U2N relay objects, the UE measures and reports on the serving NR cell and discovered L2 U2N relay UEs.

[0186] Whenever the procedure specification (other than those contained in clause 5.5.2) refers to fields, unless explicitly stated otherwise, it refers to fields included in VarMeasConfig, i.e. only the measurement configuration procedure covers direct UE actions related to the received measConfig.

[0187] In NR-DC, the UE can receive two independent measConfigs:

[0188] - measConfig associated with the MCG, which is included in the RRCReconfiguration message received via SRB1; and

[0189] - measConfig associated with the SCG, which is included in the RRCReconfiguration message received via SRB3, or alternatively, included within the RRCReconfiguration message embedded in the RRCReconfiguration message received via SRB1.

[0190] In this case, the UE maintains two separate VarMeasConfig and VarMeasReportList, one associated with each measConfig, and performs all procedures in clause 5.5 independently for each measConfig and associated VarMeasConfig and VarMeasReportList, unless explicitly stated otherwise.

[0191] Configuration related to CBR measurement is only included in the measConfig associated with the MCG.

[0192] Configuration related to Rx-Tx time difference measurement is only included in the measConfig associated with the MCG.

[0193] Performing measurements

[0194] RRC_CONNECTED UE shall derive cell measurement results by measuring one or more beams associated with each cell as configured by the network. For all cell measurement results except RSSI and CLI measurement results in RRC_CONNECTED, the UE applies layer 3 filtering before using the measurement result evaluation reporting criteria, measurement reporting, or criteria for triggering conditional reconfiguration execution. For cell measurements, the network may configure RSRP, RSRQ, SINR, RSCP, or EcN0 as triggering quantities. For CLI measurements, the network may configure SRS-RSRP or CLI-RSSI as triggering quantities. For cell and beam measurements, the reported quantity may be any combination of quantities (i.e., RSRP only; RSRQ only; SINR only; RSRP and RSRQ; RSRP and SINR; RSRQ and SINR; RSRP, RSRQ, and SINR; RSCP only; EcN0 only; RSCP and EcN0), regardless of the triggering quantity, and for CLI measurements, the reported quantity may be SRS-RSRP or CLI-RSSI. For conditional reconfiguration execution, the network may configure up to two quantities, both using the same RS type. The UE shall not apply layer 3 filtering to derive CBR measurements. The UE shall not apply layer 3 filtering to derive Rx-Tx time difference measurements.

[0195] The network can also configure the UE to report per-beam measurement information (which can be per-beam measurement results with corresponding beam identifiers, or just beam identifiers). If beam measurement information is configured to be included in the measurement report, the UE applies Layer 3 beam filtering. On the other hand, the exact L1 filtering of beam measurements used to derive cell measurement results depends on the implementation.

[0196] Derivation of cell measurement results

[0197] The network can configure the UE in RRC_CONNECTED to derive RSRP, RSRQ and SINR measurement results per cell associated with the NR measurement object based on the parameters configured in measObject (e.g., maximum number of beams to average and beam combining threshold) and reportConfig (rsType, SS / PBCH block or CSI-RS to be measured).

[0198] The network may configure a UE in RRC_IDLE or RRC_INACTIVE to derive RSRP and RSRQ measurements per cell associated with NR carriers based on the parameters for measurement configured in measIdleCarrierListNR within VarMeasIdleConfig.

[0199] Measurement report trigger

[0200] If AS security is successfully activated, the UE shall:

[0201] 1>For each measId included in measIdList in VarMeasConfig:

[0202] 2>If the corresponding reportConfig includes a reportType set to eventTriggered or periodic:

[0203] 3>If the corresponding measObject involves NR:

[0204] 4>If the corresponding reportConfig includes measRSSI-ReportConfig:

[0205] 5> The resources indicated by rmtc-Config on the associated frequency are considered applicable;

[0206] 4>If eventA1 or eventA2 is configured in the corresponding reportConfig:

[0207] 5> Only the serving cell is considered applicable;

[0208] 4>If eventA3 or eventA5 is configured in the corresponding reportConfig:

[0209] 5> If the serving cell is associated with a measObjectNR and the neighbor is associated with another measObjectNR, any serving cell associated with the other measObjectNR is also considered a neighbor cell;

[0210] 4>If eventX2 is configured in the corresponding reportConfig:

[0211] 5> Only considered applicable for serving L2 U2N relay UE;

[0212] 4>If the corresponding reportConfig includes a reportType set to periodic; or

[0213] 4>For measurement events other than eventA1, eventA2, eventD1, or eventX2:

[0214] 5>If useAllowedCellList is set to true:

[0215] 6> Any neighboring cell detected based on the parameters in the associated measObjectNR is considered applicable when the relevant cell is included in the allowedCellsToAddModList defined for this measId in VarMeasConfig;

[0216] 5> Otherwise:

[0217] 6> When the relevant cell is not included in the excludedCellsToAddModList defined for this measId in VarMeasConfig, any neighboring cell detected based on the parameters in the associated measObjectNR is considered applicable;

[0218] 3> Otherwise, if the corresponding measObject involves E-UTRA:

[0219] 4>If eventB1 or eventB2 is configured in the corresponding reportConfig:

[0220] 5> Treat the serving cell (if any) on the associated E-UTRA frequency as a neighboring cell;

[0221] 4> When the relevant cell is not included in the excludedCellsToAddModListEUTRAN defined for this measId in VarMeasConfig, any neighboring cell detected on the associated frequency is considered applicable;

[0222] 3> Otherwise, if the corresponding measObject involves UTRA-FDD:

[0223] 4> If eventB1-UTRA-FDD or eventB2-UTRA-FDD is configured in the corresponding reportConfig; or

[0224] 4>If the corresponding reportConfig includes reportType set to periodical:

[0225] 5> When the relevant cell is included in the cellsToAddModList defined for this measId in VarMeasConfig, the neighboring cell on the associated frequency is considered applicable;

[0226] 3> Otherwise, if the corresponding measObject involves an L2 U2N relay UE:

[0227] 4> If eventY1-Relay or eventY2-Relay is configured in the corresponding reportConfig; or

[0228] 4>If the corresponding reportConfig includes reportType set to periodical:

[0229] 5> Any L2 U2N relay UE that meets the upper layer criteria detected on the associated frequency is considered applicable for this measId;

[0230] 2> Otherwise, if the corresponding reportConfig includes reportType set to reportCGI:

[0231] 3> Cells detected on the associated measObject with a physical cell identifier matching the value of cellForWhichToReportCGI included in the corresponding reportConfig within VarMeasConfig are considered applicable;

[0232] 2> Otherwise, if the corresponding reportConfig includes reportType set to reportSFTD:

[0233] 3>If the corresponding measObject involves NR:

[0234] 4>If reportSFTD-Meas is set to true:

[0235] 5>NR PSCell is considered applicable;

[0236] 4> Otherwise if reportSFTD-NeighMeas is included:

[0237] 5>If cellsForWhichToReportSFTD is configured in the corresponding reportConfig:

[0238] 6> Any NR neighbour cell detected on the associated measObjectNR and having a physical cell identity included in cellsForWhichToReportSFTD is considered applicable;

[0239] 5> Otherwise:

[0240] 6> When the relevant cell is not included in the excludedCellsToAddModList defined for this measId in VarMeasConfig, up to 3 strongest NR neighbor cells detected based on the parameters in the associated measObjectNR are considered applicable;

[0241] 3> Otherwise, if the corresponding measObject involves E-UTRA:

[0242] 4>If reportSFTD-Meas is set to true:

[0243] 5> E-UTRA PSCell is considered applicable;

[0244] 2> Otherwise, if the corresponding reportConfig includes a reportType set to cli-Periodical or cli-EventTriggered:

[0245] 3> All CLI measurement resources included in the corresponding measObject are considered applicable;

[0246] 2> Otherwise, if the corresponding reportConfig includes reportType set to rxTxPeriodical:

[0247] 3> All Rx-Tx time difference measurement resources included in the corresponding measObject are considered applicable;

[0248] 2> If the corresponding reportConfig involves reporting for NR sidelink communication / discovery (i.e., reportConfigNR-SL):

[0249] 3> The transmission resource pool indicated by tx-PoolMeasToAddModList defined for this measId in VarMeasConfig is considered applicable;

[0250] 2> If reportType is set to eventTriggered, and if the entry conditions applicable to the event are met for one or more applicable cells for all measurements after layer 3 filtering during timeToTrigger defined in VarMeasConfig for the event (i.e., the event corresponding to eventId of the corresponding reportConfig in VarMeasConfig), and VarMeasReportList does not include a measurement report entry for the measId (the first cell to trigger the event):

[0251] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0252] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0253] 3> Include the relevant cells in the cellsTriggeredList defined for the measId in VarMeasReportList;

[0254] 3> If useT312 is set to true in reportConfig for this event:

[0255] 4> If the T310 for the corresponding SpCell is running; and

[0256] 4> If T312 is not running for the corresponding SpCell:

[0257] 5> Start timer T312 for the corresponding SpCell using the value of T312 configured in the corresponding measObjectNR;

[0258] 3>Initiate measurement report process;

[0259] 2> Otherwise, if reportType is set to eventTriggered, and if, for all measurements after layer 3 filtering made during timeToTrigger defined for this event in VarMeasConfig (i.e., the event corresponding to eventId of the corresponding reportConfig in VarMeasConfig), the entry conditions applicable to this event are met for one or more applicable cells not included in cellsTriggeredList (the subsequent cell triggers the event):

[0260] 3> Set numberOfReportsSent defined for this measId in VarMeasReportList to 0;

[0261] 3> Include the relevant cells in the cellsTriggeredList defined for the measId in VarMeasReportList;

[0262] 3> If useT312 is set to true in reportConfig for this event:

[0263] 4> If the T310 for the corresponding SpCell is running; and

[0264] 4> If T312 is not running for the corresponding SpCell:

[0265] 5> Start timer T312 for the corresponding SpCell using the value of T312 configured in the corresponding measObjectNR;

[0266] 3>Initiate measurement report process;

[0267] 2> If reportType is set to eventTriggered, and if, for all measurements after layer 3 filtering made during timeToTrigger defined for this event in VarMeasConfig, for one or more cells included in cellsTriggeredList defined for this measId in VarMeasReportList, the leaving condition applicable to this event is met:

[0268] 3>Remove the relevant cells in cellsTriggeredList defined for the measId in VarMeasReportList;

[0269] 3>If reportOnLeave is set to true for the corresponding report configuration:

[0270] 4>Initiate measurement report process;

[0271] 3>If the cellsTriggeredList defined for the measId in VarMeasReportList is empty:

[0272] 4> Remove the measurement report entry for the measId in VarMeasReportList;

[0273] 4> If it is running, stop the periodic reporting timer for this measId;

[0274] 2> If reportType is set to eventTriggered, and if for all measurements after layer 3 filtering performed during timeToTrigger defined for this event in VarMeasConfig (i.e., the event corresponding to eventId of the corresponding reportConfig in VarMeasConfig), the entry conditions applicable to this event are met for one or more applicable L2 U2N relay UEs, and VarMeasReportList does not include a measurement report entry for this measId (the first L2 U2N relay UE triggers the event):

[0275] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0276] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0277] 3> Include the relevant L2 U2N relay UE in the relaysTriggeredList defined for the measId in VarMeasReportList;

[0278] 3>Initiate measurement report process;

[0279] 2> Otherwise, if reportType is set to eventTriggered, and if, for all measurements after layer 3 filtering made during timeToTrigger defined for this event in VarMeasConfig (i.e., the event corresponding to eventId of the corresponding reportConfig in VarMeasConfig), for one or more applicable L2U2N relay UEs not included in relaysTriggeredList, the entry condition applicable to this event is met (the subsequent L2U2N relay UE triggers this event):

[0280] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0281] 3> Include the relevant L2 U2N relay UE in the relaysTriggeredList defined for the measId in VarMeasReportList;

[0282] 3>Initiate measurement report process;

[0283] 2> Otherwise, if reportType is set to eventTriggered, and if, for all measurements after layer 3 filtering made during timeToTrigger defined for this event in VarMeasConfig, for one or more L2U 2N relay UEs included in relaysTriggeredList defined for this measId in VarMeasReportList, the leaving condition applicable to this event is met:

[0284] 3> Remove the relevant L2 U2N relay UE in the relaysTriggeredList defined for the measId in VarMeasReportList;

[0285] 3>If reportOnLeave is set to true for the corresponding report configuration:

[0286] 4>Initiate measurement report process;

[0287] 3> If the relaysTriggeredList defined for the measId in VarMeasReportList is empty:

[0288] 4> Remove the measurement report entry for the measId in VarMeasReportList;

[0289] 4> If it is running, stop the periodic reporting timer for this measId;

[0290] 2> Otherwise, if reportType is set to eventTriggered, and if for all measurements taken during timeToTrigger defined for this event in VarMeasConfig (i.e., the event corresponding to the eventId of the corresponding reportConfig in VarMeasConfig), the entry conditions applicable to this event are met for one or more applicable transmission resource pools, and VarMeasReportList does not include a measurement report entry for this measId (the first transmission resource pool triggered the event):

[0291] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0292] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0293] 3> Include the relevant transmission resource pool in the poolsTriggeredList defined for the measId in VarMeasReportList;

[0294] 3>Initiate measurement report process;

[0295] 2> Otherwise, if reportType is set to eventTriggered, and if, for all measurements taken during timeToTrigger defined for this event in VarMeasConfig (i.e., the event corresponding to eventId of the corresponding reportConfig in VarMeasConfig), the entry conditions applicable to this event are met for one or more applicable transport resource pools not included in poolsTriggeredList (a subsequent transport resource pool triggered this event):

[0296] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0297] 3> Include the relevant transmission resource pool in the poolsTriggeredList defined for the measId in VarMeasReportList;

[0298] 3>Initiate measurement report process;

[0299] 2> If reportType is set to eventTriggered, and if, for all measurements taken during timeToTrigger defined for this event in VarMeasConfig, for one or more applicable transport resource pools included in poolsTriggeredList defined for this measId in VarMeasReportList, the leave condition applicable to this event is met:

[0300] 3> Remove the relevant transmission resource pool in poolsTriggeredList defined for the measId in VarMeasReportList;

[0301] 3>If the poolsTriggeredList defined for the measId in VarMeasReportList is empty:

[0302] 4> Remove the measurement report entry for the measId in VarMeasReportList;

[0303] 4> If it is running, stop the periodic reporting timer for this measId

[0304] 2> Otherwise, if reportType is set to eventTriggered and if eventId is set to eventD1 and if during the timeToTrigger defined for the event in VarMeasConfig (i.e., the event corresponding to the eventId of the corresponding reportConfig in VarMeasConfig), the entry condition applicable to the event is satisfied:

[0305] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0306] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0307] 3>Initiate measurement report process;

[0308] 2> Otherwise, if reportType is set to eventTriggered, and if eventId is set to eventD1, and if during the timeToTrigger defined for this event in VarMeasConfig, the associated VarMeasReport in the VarMeasReportList for this measId satisfies the leaving condition applicable to this event:

[0309] 3>If reportOnLeave is set to true for the corresponding report configuration:

[0310] 4>Initiate measurement report process;

[0311] 3> Remove the measurement report entry for the measId in VarMeasReportList;

[0312] 3> If it is running, stop the periodic reporting timer for this measId;

[0313] 2> If reportType is set to periodic and if the (first) measurement result is available:

[0314] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0315] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0316] 3>If the corresponding reportConfig includes measRSSI-ReportConfig:

[0317] 4> The measurement reporting procedure is initiated immediately when the physical layer reports the RSSI sample value after the first L1 measurement duration;

[0318] 3> Otherwise, if the corresponding reportConfig includes ul-DelayValueConfig:

[0319] 4> Initiate the measurement reporting procedure immediately after the first measurement result is provided from the lower layer of the associated DRB identifier;

[0320] 3> Otherwise, if the corresponding reportConfig includes ul-ExcessDelayConfig:

[0321] 4> According to the threshold configured for each DRB identifier, the measurement reporting process is initiated immediately after the lower layer of the relevant DRB identifier provides the first measurement result;

[0322] 3> Otherwise if reportAmount exceeds 1:

[0323] 4> Initiate the measurement reporting procedure immediately after the quantity to be reported becomes available for the NR SpCell or the serving L2 U2N relay UE (if the UE is a L2 U2N remote UE);

[0324] 3> Otherwise (that is, reportAmount is equal to 1):

[0325] 4> Initiate the measurement reporting procedure immediately after the quantity to be reported becomes available for the strongest cell among the NR SpCell and the applicable cells, or for the strongest L2 U2N relay UE among the NR SpCell and the applicable L2 U2N relay UE; or initiate the measurement reporting procedure immediately after the quantity to be reported becomes available for the serving L2 U2N relay UE and the strongest cell among the applicable cells (if the UE is a L2U2N remote UE);

[0326] 2> If the corresponding reportConfig involves reporting for NR sidelink communication / discovery, reportType is set to periodic, and if the (first) measurement result is available:

[0327] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0328] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0329] 3> Initiate the measurement reporting procedure immediately after the quantity to be reported becomes available for the NR SpCell and the CBR measurement results become available;

[0330] 2> If reportType is set to cli-EventTriggered, and if the entry condition applicable to the event is met for one or more applicable CLI measurement resources for all measurements after layer 3 filtering performed during timeToTrigger defined in VarMeasConfig for the event (i.e., the event corresponding to eventId of the corresponding reportConfig in VarMeasConfig), and VarMeasReportList does not include a measurement report entry for that measId (the first CLI measurement resource triggered the event):

[0331] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0332] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0333] 3> Include the relevant CLI measurement resources in the cli-TriggeredList defined for the measId in VarMeasReportList;

[0334] 3>Initiate measurement report process;

[0335] 2> Otherwise, if reportType is set to cli-EventTriggered, and if, for all measurements after layer 3 filtering made during timeToTrigger defined for this event in VarMeasConfig (i.e., the event corresponding to eventId of the corresponding reportConfig in VarMeasConfig), the entry conditions applicable to this event are met for one or more CLI measurement resources not included in cli-TriggeredList (a subsequent CLI measurement resource triggered this event):

[0336] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0337] 3> Include the relevant CLI measurement resources in the cli-TriggeredList defined for the measId in VarMeasReportList;

[0338] 3>Initiate measurement report process;

[0339] 2> If reportType is set to cli-EventTriggered, and if, for all measurements after layer 3 filtering made during the timeToTrigger defined for this event in VarMeasConfig, the leaving conditions applicable to this event are met for one or more of the CLI measurement resources included in the cli-TriggeredList defined for this measId in VarMeasReportList:

[0340] 3> Remove the relevant CLI measurement resources in the cli-TriggeredList defined for the measId in VarMeasReportList;

[0341] 3>If reportOnLeave is set to true for the corresponding report configuration:

[0342] 4>Initiate measurement report process;

[0343] 3> If the cli-TriggeredList defined for the measId in VarMeasReportList is empty:

[0344] 4> Remove the measurement report entry for the measId in VarMeasReportList;

[0345] 4> If it is running, stop the periodic reporting timer for this measId;

[0346] 2> If reportType is set to cli-Periodical and if the (first) measurement result is available:

[0347] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0348] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0349] 3> Initiate the measurement reporting procedure immediately after the quantity to be reported becomes available for at least one CLI measurement resource;

[0350] 2> If reportType is set to rxTxPeriodical and if the (first) measurement result is available:

[0351] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0352] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0353] 3>Initiate measurement report process;

[0354] 2> When the periodic reporting timer for this measId expires:

[0355] 3>Initiate measurement reporting process.

[0356] 2>If the corresponding reportConfig includes reportType, it is set to reportSFTD:

[0357] 3>If the corresponding measObject involves NR:

[0358] 4> If drx-SFTD-NeighMeas is included:

[0359] 5> If the quantity to be reported becomes available for each requested pair of PCell and NR cells:

[0360] 6> Stop timer T322;

[0361] 6>Initiate measurement report process;

[0362] 4> Otherwise

[0363] 5> Initiate the measurement reporting procedure immediately after the quantity to be reported becomes available for each request pair of PCell and NR cells or the maximum measurement reporting delay;

[0364] 3> Otherwise, if the corresponding measObject involves E-UTRA:

[0365] 4> Initiate the measurement reporting procedure immediately after the quantity to be reported becomes available for the PCell and E-UTRA PSCell pair or the maximum measurement reporting delay;

[0366] 2>If reportType is set to reportCGI:

[0367] 3> If the UE obtains the SIB1 or SystemInformationBlockType1 of the requested cell; or

[0368] 3> If the UE detects that the requested NR cell does not send SIB1:

[0369] 4> Stop timer T321;

[0370] 4> Include the measurement report entry for this measId in VarMeasReportList;

[0371] 4> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0372] 4>Initiate measurement report process;

[0373] 2> When T321 for this measId expires:

[0374] 3> Include the measurement report entry for this measId in VarMeasReportList;

[0375] 3> Set numberOfReportsSent defined for the measId in VarMeasReportList to 0;

[0376] 3>Initiate measurement reporting process.

[0377] 2> When T322 for this measId expires:

[0378] 3>Initiate measurement reporting process.

[0379] The events are as follows:

[0380] - Event A1: Service becomes better than threshold

[0381] - Event A2: Service becomes worse than the threshold

[0382] - Event A3: Neighbor becomes better than SpCell by offset

[0383] - Event A4: Neighbor becomes better than threshold

[0384] - Event A5: SpCell becomes worse than threshold1, and the neighbor becomes better than threshold2

[0385] - Event A6: Neighbor becomes better than SCell offset

[0386] - Event B1: Inter-RAT neighbor becomes better than threshold

[0387] - Event B2: PCell becomes worse than threshold1, and inter-RAT neighbors become better than threshold2

[0388] - Event I1: Interference becomes higher than the threshold

[0389] - Event C1: The NR side link channel busy rate is higher than the threshold

[0390] - Event C2: NR side link channel busy rate is lower than the threshold

[0391] - Event X1: Serving L2 U2N relay UE becomes worse than threshold1, and NR cell becomes better than threshold2

[0392] - Event X2: Serving L2 U2N relay UE becomes worse than threshold

[0393] - Event Y1: PCell becomes worse than threshold1, and candidate L2 U2N relay UE becomes better than threshold2

[0394] - Event Y2: Candidate L2 U2N relay UE becomes better than the threshold

[0395] Figure 10 An example of a measurement report to which an implementation of the present disclosure is applied is shown.

[0396] The purpose of this procedure is to transfer measurement results from the UE to the network. The UE shall initiate this procedure only after successful AS security activation.

[0397] For the measId that triggered the measurement reporting procedure, the UE shall set the measResults in the MeasurementReport message as follows:

[0398] 1> Set measId to the measurement identifier that triggers the measurement report;

[0399] 1> For each serving cell configured with servingCellMO:

[0400] 2> If the reportConfig associated with the measId that triggers the measurement report includes rsType:

[0401] 3> If serving cell measurement is available based on rsType included in the reportConfig that triggered the measurement report:

[0402] 4> Set measResultServingCell in measResultServingMOList to include the RSRP, RSRQ and available SINR of the serving cell derived based on rsType included in reportConfig that triggered the measurement report;

[0403] 2> Otherwise:

[0404] 3> If SSB-based serving cell measurement is available:

[0405] 4> Set measResultServingCell in measResultServingMOList to include the RSRP, RSRQ and available SINR of the serving cell derived based on the SSB;

[0406] 3> Otherwise, if CSI-RS based serving cell measurement is available:

[0407] 4> Set measResultServingCell in measResultServingMOList to include the RSRP, RSRQ and available SINR of the serving cell derived based on CSI-RS;

[0408] 1> Set servCellId in measResultServingMOList to each NR serving cell configured with servingCellMO (if any);

[0409] 1> If the reportConfig associated with the measId that triggers the measurement report includes reportQuantityRS-Indexes and maxNrofRS-IndexesToReport:

[0410] 2> For each serving cell configured with servingCellMO, include beam measurement information according to the associated reportConfig;

[0411] 1> If the reportConfig associated with the measId that triggers the measurement report includes reportAddNeighMeas:

[0412] 2> For each measObjectId referenced in the measIdList referenced by servingCellMO in addition to the measObjectId corresponding to the measId that triggered the measurement report:

[0413] 3> If the measObjectNR indicated by servingCellMO includes the RS resource configuration corresponding to the rsType indicated in reportConfig:

[0414] 4> If the RSRP measurement result is available for the cell corresponding to the measObjectNR, then set the measResultBestNeighCell in the measResultServingMOList to the available measurement quantity including the physCellId and the reportQuantityCell and rsType indicated in the reportConfig of the non-serving cell corresponding to the measObjectNR of interest with the highest measured RSRP, otherwise if the RSRQ measurement result is available for the cell corresponding to the measObjectNR, then the non-serving cell with the highest measured RSRQ, otherwise the non-serving cell with the highest measured SINR;

[0415] 4> If the reportConfig associated with the measId that triggers the measurement report includes reportQuantityRS-Indexes and maxNrofRS-IndexesToReport:

[0416] 5> For each best non-serving cell included in the measurement report:

[0417] 6> Include beam measurement information according to the associated reportConfig.

[0418] Reporting of beam measurement information

[0419] For beam measurement information to be included in the measurement report, the UE shall:

[0420] 1>If reportType is set to eventTriggered:

[0421] 2> Treat the trigger amount as the ranking amount (if available), otherwise RSRP is regarded as the ranking amount (if available), otherwise RSRQ is regarded as the ranking amount (if available), otherwise SINR is regarded as the ranking amount;

[0422] 1>If reportType is set to periodic:

[0423] 2>If single report quantity is set to true in reportQuantityRS-Index;

[0424] 3> Treat the configured single quantity as a sorted quantity;

[0425] 2> Otherwise:

[0426] 3>If rsrp is set to true;

[0427] 4> Consider RSRP as the ranking quantity;

[0428] 3> Otherwise:

[0429] 4> Treat RSRQ as a ranking quantity;

[0430] 1> Set rsIndexResults to include up to maxNrofRS-IndexesToReport SS / PBCH block indices or CSI-RS indices in descending order of sorting amount, as follows:

[0431] 2> If the measurement information to be included is based on the SS / PBCH block:

[0432] 3> include in resultSSSB-Index the index associated with the best beam for this SS / PBCH block ranking amount, and if absThreshSS-BlocksConsolidation is included in the VarMeasConfig of the measObject associated with the cell for which the beam is to be reported, then include the remaining beams with a ranking amount higher than absThreshSS-BlocksConsolidation;

[0433] 3> If includeBeamMeasurements is set to true, the SS / PBCH-based measurements of the quantity in reportQuantityRS-Index for each SS / PBCH block index are included;

[0434] 2> Otherwise, if the beam measurement information to be included is based on CSI-RS:

[0435] 3> include in resultsCSI-RS-Index the index associated with the best beam for that CSI-RS ranking amount, and if absThreshCSI-RS-Consolidation is included in the VarMeasConfig of the measObject associated with the cell for which the beam is to be reported, include the remaining beams with a ranking amount higher than absThreshCSI-RS-Consolidation;

[0436] 3> If includeBeamMeasurements is set to true, the CSI-RS based measurements of the quantity in reportQuantityRS-Index for each CSI-RS index are included.

[0437] Sorting of cell measurement results

[0438] The UE shall determine the ranking amount based on the parameters of the reportConfig associated with the measId that triggered the report:

[0439] 1>If reportType is set to eventTriggered:

[0440] 2> For NR cells, the amount used in aN-Threshold (for eventA1, eventA2, and eventA4) or a5-Threshold2 (for eventA5) or aN-Offset (for eventA3 and eventA6) is considered as the sorting amount;

[0441] 2> For E-UTRA cells, the number used in bN-ThresholdEUTRA is regarded as the sorting quantity;

[0442] 2> For UTRA-FDD cells, the amount used in bN-ThresholdUTRA-FDD is regarded as the sorting amount;

[0443] 2> For candidate L2 U2N relay UEs, yN-Threshold2-Relay is considered as the ranking quantity;

[0444] 1>If reportType is set to periodic:

[0445] 2> Determine the ranking quantity based on reportQuantityCell for the NR cell and based on reportQuantity for the E-UTRA cell as follows:

[0446] 3>If a single quantity is set to true:

[0447] 4> Treat the quantity as a sorting quantity;

[0448] 3> Otherwise:

[0449] 4>If rsrp is set to true;

[0450] 5> Consider RSRP as the ranking quantity;

[0451] 4> Otherwise:

[0452] 5> Treat RSRQ as a ranking quantity;

[0453] 2> Determine the sort quantity based on reportQuantityUTRA-FDD for the UTRA-FDD cell as follows:

[0454] 3>If a single quantity is set to true:

[0455] 4> Treat the quantity as a sorting quantity;

[0456] 3> Otherwise:

[0457] 4> Treat RSCP as a ranking quantity.

[0458] 2> For candidate L2 U2N relay UEs, reportQuantityRelay is considered as the ranking quantity.

[0459] At the same time, if a cell is about to be shut down, the network needs to receive measurement reports from the UE even if the quality of the neighboring cell is not better than that of the serving cell, or not as good as that required to trigger a handover. Even if the quality of the neighboring cell is much lower than that of the serving cell, the UE should handover to the neighboring cell before the serving cell is shut down if it is suitable for access. To this end, the UE needs to report the measurement results of neighboring cells whose measured quality is not as good as the current serving cell.

[0460] However, if many UEs are configured to report measurements of neighboring cells whose quality is much lower than that of the serving cell, measurement reports will be sent excessively and will not be useful on the network side until the cell decides to be switched off.

[0461] Therefore, there is a need to study measurement reporting that takes network power saving into consideration in wireless communication systems.

[0462] Hereinafter, a method for measurement reporting considering network power saving in a wireless communication system according to some embodiments of the present disclosure will be described with reference to the following drawings.

[0463] The following figures are created to explain specific embodiments of the present disclosure. The names of specific devices or the names of specific signals / messages / fields shown in the figures are provided as examples, and therefore the technical features of the present disclosure are not limited to the specific names used in the following figures. In this document, a wireless device may be referred to as a user equipment (UE).

[0464] Figure 11 An example of a method for measurement reporting considering network power saving in a wireless communication system according to some embodiments of the present disclosure is shown.

[0465] Specifically, Figure 11 An example of a method performed by a wireless device in a wireless communication system is shown.

[0466] In step S1101 , the wireless device may receive a report configuration related to an activation indication from a network.

[0467] For example, the reporting configuration may include information notifying that the reporting configuration is deactivated until an activation indication is received.

[0468] For example, the reporting configuration may include information on at least one execution condition for measurement reporting.The at least one execution condition for measurement reporting may be activated in the NES mode.

[0469] For example, at least one execution condition may have a lower threshold for measurement reporting than the execution condition for normal mode. That is, although the neighboring cell does not meet the execution condition for normal mode, the neighboring cell may meet at least one execution condition for activation in NES mode. In this case, the execution condition for normal mode may be activated without receiving an activation indication.

[0470] In step S1102 , the wireless device may consider the reporting configuration to be deactivated.

[0471] For example, the wireless device may skip evaluating whether at least one execution condition for measurement reporting is satisfied while the reporting configuration is deactivated.

[0472] For example, even if the at least one execution condition for measurement reporting is satisfied, when the reporting configuration is deactivated, the wireless device may skip sending the measurement report based on the reporting configuration.

[0473] In step S1103 , the wireless device may activate the reporting configuration upon receiving the activation indication.

[0474] For example, the activation indication may include a network energy saving (NES) mode indication and / or a cell shut-down indication. That is, a cell (e.g., a serving cell) may send an indication notifying the cell that it will be shut down. Otherwise, the cell may send an indication notifying the cell that it will enter a network energy saving mode.

[0475] In step S1104 , the wireless device may send a measurement report to the network based on the reporting configuration.

[0476] For example, the measurement report may include measurement results of one or more neighboring cells having greater measurement results than other neighboring cells. In other words, the measurement report may include information about one or more neighboring cells having the best measurement results (ie, the N best neighboring cells).

[0477] For example, the measurement report may include information notifying that the measurement report is based on a reporting configuration activated upon receipt of an activation indication. For example, the measurement report may include information notifying that the measurement report is sent upon receipt of an activation indication.

[0478] According to some embodiments of the present disclosure, the at least one execution condition may be a condition that is satisfied by all wireless devices in the cell that sends the activation indication. That is, all wireless devices with reporting conditions related to the activation indication may perform measurement reporting upon receiving the activation indication.

[0479] In other words, when a reporting configuration including at least one execution condition is activated, all wireless devices having the reporting configuration may perform measurement reporting upon receiving an activation indication.

[0480] In other words, all wireless devices that receive the activation indication may send measurement reports to the network.

[0481] According to some embodiments of the present disclosure, after sending the measurement report in step S1104 , the wireless device may receive mobility information in response to the measurement report from the network.

[0482] For example, the wireless device may receive a handover command for lower layer triggered mobility (LTM) and / or a cell handover command from the network (eg, the lower layer may be a PHY layer or a MAC layer).

[0483] The wireless device may perform mobility based on the mobility information. For example, the wireless device may perform handover to another cell and / or LTM.

[0484] According to some embodiments of the present disclosure, a wireless device may communicate with at least one of a user device other than the wireless device, a network, or an autonomous vehicle.

[0485] In the following, technical features related to measurement reporting considering network power saving are described. For example, conditional measurement reporting for network power saving is described.

[0486] When the UE receives a cell deactivation indication from the network, the UE includes the measurement result of the best neighbor cell in a measurement report and sends the measurement report to the network.

[0487] A new report type can be defined for cell-off specific measurement reporting. In the reporting configuration, if the report type is set to cell-off specific measurement reporting, the UE includes the measurement results of the best neighbor cell in the measurement report and sends the measurement report to the network when a cell-off indication is received from the network.

[0488] The cell shutdown indication may be a group measurement report / group handover command. That is, if the UE is configured with a group handover configuration, the UE initiates a handover according to the group handover configuration upon receiving the cell shutdown indication. If the UE is not configured with a group handover configuration, or if there is no target cell that meets the group handover conditions, for example, if the quality of the target cell is below a handover threshold, the UE initiates a measurement report upon receiving the cell shutdown indication.

[0489] When the UE receives a cell shutdown indication from the network, the UE considers the cell shutdown specific reporting configuration / event configured by the network to become active. The UE considers the cell shutdown specific reporting configuration / event configured by the network to be inactive until a cell shutdown indication is received from the network.

[0490] For the inactive cell off specific reporting configuration / event, the UE does not evaluate whether the inactive cell off specific reporting condition (or the reporting condition included in the inactive cell off specific reporting configuration) is met. That is, although the reporting event is met, the UE does not initiate the measurement reporting process.

[0491] For an active cell deactivation specific reporting configuration / event, the UE evaluates whether an active cell deactivation specific reporting condition (or a reporting condition included in the active cell deactivation specific reporting configuration) is met. That is, if the reporting condition is met, the UE initiates a measurement reporting procedure.

[0492] For non-cell deactivation specific reporting configurations / events, the UE evaluates whether the reporting conditions are met regardless of the cell deactivation indication. That is, if the reporting conditions are met, the UE initiates the measurement reporting procedure.

[0493] When a cell off indication is received, if no neighboring cell satisfies the cell off specific reporting event, the UE constructs a measurement report using the measurement results of the best neighboring cell and sends it to the network.

[0494] In the measurement configuration, it is indicated whether each configured reporting configuration / event is a cell shut-off specific reporting configuration / event.

[0495] If the measurement object is associated only with cell off specific reporting configuration / condition, i.e., if the measurement object is not associated with any non-cell off specific reporting configuration / condition, the UE may not measure the measurement object until a cell off indication is received from the network.

[0496] If the measurement object is associated with any non-cell-off specific reporting configuration / condition, the UE may measure the measurement object even before receiving a cell-off indication from the network.

[0497] If the reporting configuration / event is configured as a cell deactivation specific reporting configuration / condition, the UE does not evaluate whether the reporting condition is met, or does not initiate measurement reporting even if the reporting condition is met.

[0498] If the reporting configuration / event is configured as non-cell off specific reporting configuration / condition, the UE evaluates whether the reporting condition is met, and initiates measurement reporting if the reporting condition is met.

[0499] Figure 12 An example of a method for conditional measurement reporting for network power saving is shown.

[0500] Specifically, Figure 12 An example of a method performed by a wireless device in a wireless communication system is shown.

[0501] In step S1201 , the UE may receive measurement configuration from the network.

[0502] The measurement configuration includes two reporting events, indicating that the first reporting event is a normal reporting event, ie, a non-cell-off specific measurement reporting event, and the second reporting event is a cell-off specific measurement reporting event.

[0503] In step S1202 , the UE may evaluate whether a configured reporting event is satisfied.

[0504] The UE evaluates whether the first measurement reporting event is met, but does not evaluate whether the second measurement reporting event is met because the cell deactivation indication has not been received.

[0505] In step S1203, the UE may receive a cell deactivation indication from the network.

[0506] Upon receiving the cell deactivation indication from the network, the UE starts evaluating whether a second measurement reporting event is met.

[0507] In step S1204, the UE may report the measurement results of neighboring cells.

[0508] If the measurement results of the neighboring cells meet the cell off specific reporting event, the UE sends a measurement report including the measurement results of the neighboring cells to the network. If no neighboring cells meet the cell off specific reporting event, the UE constructs a measurement report using the measurement results of the best neighboring cell and sends it to the network.

[0509] Figure 13 An example of a method for conditional measurement reporting for network power saving according to some embodiments of the present disclosure is shown.

[0510] exist Figure 13 In the case of a cell deactivation-specific reporting event, the UE may receive a measurement configuration from the serving gNB that includes a cell deactivation-specific reporting event. The UE does not report measurement results even if the cell deactivation-specific reporting event is met.

[0511] The UE may receive a cell deactivation indication from the serving gNB. In this case, the UE may send measurement reports according to the cell deactivation specific reporting event.

[0512] Figure 11 、 Figure 12 and Figure 13Some of the detailed steps shown in the example of FIG. 1 may not be necessary and may be omitted. Figure 11 、 Figure 12 and Figure 13 In addition to the steps shown in , other steps can be added, and the order of the steps can be changed. Some of the above steps may have their own technical meanings.

[0513] Hereinafter, a device for measuring a report in consideration of network power saving in a wireless communication system according to some embodiments of the present disclosure will be described. In this document, the device may be Figure 2 、 Figure 3 and Figure 5 A wireless device (100 or 200) in.

[0514] For example, the wireless device may perform the above method. Detailed descriptions that overlap with the above content may be simplified or omitted.

[0515] Reference Figure 5 , the wireless device 100 may include a processor 102 , a memory 104 , and a transceiver 106 .

[0516] According to some embodiments of the present disclosure, the processor 102 may be configured to be operatively coupled with the memory 104 and the transceiver 106 .

[0517] The processor 102 may be adapted to receive a reporting configuration associated with an activation indication from the network. The processor 102 may be adapted to consider the reporting configuration deactivated. The processor 102 may be adapted to activate the reporting configuration upon receiving the activation indication. The processor 102 may be adapted to send a measurement report to the network based on the reporting configuration.

[0518] For example, the measurement report may include measurement results of one or more neighboring cells having greater measurement results than other neighboring cells.

[0519] For example, the activation indication may include a network energy saving (NES) mode indication and / or a cell shut-down indication.

[0520] For example, the reporting configuration may include information notifying that the reporting configuration is deactivated until an activation indication is received.

[0521] For example, the reporting configuration may include information about at least one execution condition for measurement reporting.

[0522] For example, at least one execution condition for measurement reporting may be activated in the NES mode.

[0523] For example, at least one execution condition may have a lower threshold for measurement reporting than an execution condition for normal mode.For example, the execution condition for normal mode may be activated without receiving an activation indication.

[0524] For example, the at least one execution condition may be a condition that is satisfied for all wireless devices in the cell from which the activation indication is sent.

[0525] For example, the processor 102 may be adapted to skip evaluating whether at least one execution condition for measurement reporting is fulfilled while the reporting configuration is deactivated.

[0526] For example, the processor 102 may be adapted to skip sending a measurement report based on the measurement configuration while the reporting configuration is deactivated.

[0527] For example, the measurement report may include information notifying that the measurement report is based on a reporting configuration activated upon receipt of the activation indication.

[0528] For example, the measurement report may include information notifying that the measurement report is sent when the activation indication is received.

[0529] For example, the processor 102 may be adapted to receive mobility information from the network in response to the measurement report.For example, the processor 102 may be adapted to perform mobility based on the mobility information.

[0530] For example, the processor 102 may be adapted to control the transceiver 106 to communicate with at least one of a user device other than a wireless device, a network, or an autonomous vehicle.

[0531] Hereinafter, a processor of a wireless device for measurement reporting considering network power saving in a wireless communication system according to some embodiments of the present disclosure will be described.

[0532] The processor may be adapted to control a wireless device to receive a reporting configuration associated with an activation indication from a network. The processor may be adapted to control the wireless device to consider the reporting configuration as deactivated. The processor may be adapted to control the wireless device to activate the reporting configuration upon receiving the activation indication. The processor may be adapted to control the wireless device to send a measurement report to the network based on the reporting configuration.

[0533] For example, the measurement report may include measurement results of one or more neighboring cells having greater measurement results than other neighboring cells.

[0534] For example, the activation indication may include a network energy saving (NES) mode indication and / or a cell shut-down indication.

[0535] For example, the reporting configuration may include information notifying that the reporting configuration is deactivated until an activation indication is received.

[0536] For example, the reporting configuration may include information about at least one execution condition for measurement reporting.

[0537] For example, at least one execution condition for measurement reporting may be activated in the NES mode.

[0538] For example, at least one execution condition may have a lower threshold for measurement reporting than an execution condition for normal mode.For example, the execution condition for normal mode may be activated without receiving an activation indication.

[0539] For example, the at least one execution condition may be a condition that is satisfied for all wireless devices in the cell from which the activation indication is sent.

[0540] For example, the processor may be adapted to control the wireless apparatus to skip evaluating whether at least one execution condition for measurement reporting is met while the reporting configuration is deactivated.

[0541] For example, the processor may be adapted to control the wireless apparatus to skip sending a measurement report based on the measurement configuration while the reporting configuration is deactivated.

[0542] For example, the measurement report may include information notifying that the measurement report is based on a reporting configuration activated upon receipt of the activation indication.

[0543] For example, the measurement report may include information notifying that the measurement report is sent when the activation indication is received.

[0544] For example, the processor may be adapted to control the wireless device to receive mobility information in response to the measurement report from the network.For example, the processor may be adapted to control the wireless device to perform mobility based on the mobility information.

[0545] For example, the processor may be configured to control the wireless device to communicate with at least one of a user device other than the wireless device, a network, or an autonomous vehicle.

[0546] Hereinafter, a non-transitory computer-readable medium having stored thereon a plurality of instructions for measurement reporting considering network power saving in a wireless communication system according to some embodiments of the present disclosure will be described.

[0547] According to some embodiments of the present disclosure, the technical features of the present disclosure may be implemented directly in hardware, in software executed by a processor, or in a combination of the two. For example, a method performed by a wireless device in wireless communication may be implemented in hardware, software, firmware, or any combination thereof. For example, the software may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other storage medium.

[0548] Some examples of storage media are coupled to a processor so that the processor can read information from the storage media. In another embodiment, the storage media can be integrated into the processor. The processor and storage media can reside in an ASIC. For another example, the processor and storage media can reside as discrete components.

[0549] Computer-readable media may include tangible and non-transitory computer-readable storage media.

[0550] 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 that can be used to store instructions or data structures. Non-transitory computer-readable media may also include combinations of the foregoing.

[0551] Furthermore, the methods described herein may be implemented at least in part by a computer-readable communication medium that carries or communicates code in the form of instructions or data structures and that can be accessed, read, and / or executed by a computer.

[0552] According to some embodiments of the present disclosure, a non-transitory computer-readable medium stores a plurality of instructions, and the stored plurality of instructions may be executed by a processor of a wireless device.

[0553] The stored instructions may cause the wireless device to receive a reporting configuration associated with an activation indication from a network. The stored instructions may cause the wireless device to consider the reporting configuration deactivated. The stored instructions may cause the wireless device to activate the reporting configuration upon receiving the activation indication. The stored instructions may cause the wireless device to send a measurement report to the network based on the reporting configuration.

[0554] For example, the measurement report may include measurement results of one or more neighboring cells having greater measurement results than other neighboring cells.

[0555] For example, the activation indication may include a network energy saving (NES) mode indication and / or a cell shut-down indication.

[0556] For example, the reporting configuration may include information notifying that the reporting configuration is deactivated until an activation indication is received.

[0557] For example, the reporting configuration may include information about at least one execution condition for measurement reporting.

[0558] For example, at least one execution condition for measurement reporting may be activated in the NES mode.

[0559] For example, at least one execution condition may have a lower threshold for measurement reporting than an execution condition for normal mode.For example, the execution condition for normal mode may be activated without receiving an activation indication.

[0560] For example, the at least one execution condition may be a condition that is satisfied for all wireless devices in the cell from which the activation indication is sent.

[0561] For example, the stored plurality of instructions may cause the wireless apparatus to skip evaluating whether at least one execution condition for measurement reporting is satisfied while the reporting configuration is deactivated.

[0562] For example, the stored plurality of instructions may cause the wireless apparatus to skip sending a measurement report based on the measurement configuration while the reporting configuration is deactivated.

[0563] For example, the measurement report may include information notifying that the measurement report is based on a reporting configuration activated upon receipt of the activation indication.

[0564] For example, the measurement report may include information notifying that the measurement report is sent when the activation indication is received.

[0565] For example, the stored plurality of instructions may cause the wireless device to receive mobility information from the network in response to the measurement report.For example, the stored plurality of instructions may cause the wireless device to perform mobility based on the mobility information.

[0566] For example, the stored plurality of instructions may cause the wireless device to communicate with at least one of a user device other than the wireless device, a network, or an autonomous vehicle.

[0567] Hereinafter, a method for measurement reporting considering network power saving in a wireless communication system, performed by a base station (BS) according to some embodiments of the present disclosure, will be described.

[0568] The BS may send a reporting configuration related to the activation indication to the wireless device. For example, the reporting configuration may include information notifying that the reporting configuration related to the activation indication is deactivated in the absence of the activation indication. The BS may send the activation indication to the wireless device. The BS may receive a measurement report from the wireless device based on the reporting configuration.

[0569] Hereinafter, a base station (BS) for measurement reporting considering network power saving in a wireless communication system according to some embodiments of the present disclosure will be described.

[0570] The BS may include a transceiver, a memory, and a processor operatively coupled to the transceiver and the memory.

[0571] The processor may be configured to send a reporting configuration associated with the activation indication to the wireless device. For example, the reporting configuration may include information notifying that the reporting configuration associated with the activation indication is deactivated in the absence of the activation indication. The processor may be configured to send the activation indication to the wireless device. The processor may be configured to receive a measurement report from the wireless device based on the reporting configuration.

[0572] The present disclosure may have various beneficial effects.

[0573] According to some embodiments of the present disclosure, a wireless device may efficiently perform measurement reporting in consideration of network power saving.

[0574] For example, if many UEs are configured to report measurements of neighboring cells whose quality is much lower than that of the serving cell, measurement reports will be sent excessively and will not be useful on the network side until the cell decides to be switched off.

[0575] For example, by allowing the UE to report the measurement results of neighboring cells with poor quality only when group measurement reporting is allowed, the signaling overhead caused by measurement reporting can be significantly reduced.

[0576] For example, when a cell is turned off, since wireless devices in the cell send measurement reports based on the cell-off specific reporting configuration, the wireless devices can efficiently move to another cell.

[0577] According to some embodiments of the present disclosure, a wireless communication system may provide an effective solution for measurement reporting that takes network power saving into consideration.

[0578] The beneficial effects that can be obtained through the specific embodiments of the present disclosure are not limited to the beneficial effects listed above. For example, there may be various technical effects that can be understood and / or inferred from the present disclosure by a person of ordinary skill in the relevant art. Therefore, the specific effects of the present disclosure are not limited to those explicitly described herein, but may include various effects that can be understood or inferred from the technical features of the present disclosure.

[0579] The claims in this disclosure may be combined in various ways. For example, the technical features in the method claims of this disclosure may be combined to be implemented or performed in a device, and the technical features in the device claims may be combined to be implemented or performed in a method. Furthermore, the technical features in the method claims and the device claims may be combined to be implemented or performed in a device. Furthermore, the technical features in the method claims and the device claims may be combined to be implemented or performed in a method. Other implementations are within the scope of the appended claims.

Claims

1. A method performed by a wireless device in a wireless communication system, the method comprising: receiving a reporting configuration associated with the activation indication from the network; Considering said reporting configuration to be deactivated; activating the reporting configuration upon receiving the activation indication; as well as A measurement report is sent to the network based on the reporting configuration.

2. The method according to claim 1, in, The measurement report includes measurement results of one or more neighboring cells having greater measurement results than other neighboring cells.

3. The method according to claim 1, in, The activation indication includes a network energy saving NES mode indication and / or a cell shut down indication.

4. The method according to claim 1, in, The reporting configuration includes information notifying that the reporting configuration is deactivated until the activation indication is received.

5. The method according to claim 1, in, The reporting configuration includes information on at least one execution condition for measurement reporting.

6. The method according to claim 5, in, The at least one execution condition for measurement reporting is activated in the NES mode.

7. The method according to claim 5, in, The at least one execution condition has a lower threshold for measurement reporting than an execution condition for a normal mode.

8. The method according to claim 7, in, The execution condition for the normal mode is activated without receiving the activation instruction.

9. The method according to claim 5, in, The at least one execution condition is a condition that is satisfied for all wireless devices in the cell from which the activation indication is sent.

10. The method according to claim 5, wherein The method further comprises: While the reporting configuration is deactivated, evaluating whether the at least one execution condition for measurement reporting is met is skipped.

11. The method according to claim 1, wherein The method further comprises: While the reporting configuration is deactivated, sending a measurement report based on the measurement configuration is skipped.

12. The method according to claim 1, in, The measurement report includes information notifying that the measurement report is based on a reporting configuration activated upon receipt of the activation indication.

13. The method according to claim 1, in, The measurement report includes information for notifying that the measurement report is sent when the activation indication is received.

14. The method according to claim 1, wherein The method further comprises: receiving mobility information from the network in response to the measurement report; and Mobility is performed based on the mobility information.

15. The method according to claim 1, in, The wireless device communicates with at least one of a user device other than the wireless device, a network, or an autonomous vehicle.

16. A wireless device in a wireless communication system, the wireless device comprising: transceiver; Memory; as well as at least one processor operatively coupled to the transceiver and the memory and adapted to: receiving a reporting configuration associated with the activation indication from the network; Considering said reporting configuration to be deactivated; activating the reporting configuration upon receiving the activation indication; and A measurement report is sent to the network based on the reporting configuration.

17. The wireless device according to claim 16, in, The measurement report includes measurement results of one or more neighboring cells having greater measurement results than other neighboring cells.

18. The wireless device according to claim 16, in, The activation indication includes a network energy saving NES mode indication and / or a cell shut down indication.

19. The wireless device according to claim 16, in, The reporting configuration includes information notifying that the reporting configuration is deactivated until the activation indication is received.

20. The wireless device according to claim 16, in, The reporting configuration includes information on at least one execution condition for measurement reporting.

21. The wireless device according to claim 20, in, The at least one execution condition for measurement reporting is activated in the NES mode.

22. The wireless device according to claim 20, in, The at least one execution condition has a lower threshold for measurement reporting than an execution condition for a normal mode.

23. The wireless device according to claim 22, in, The execution condition for the normal mode is activated without receiving the activation instruction.

24. The wireless device according to claim 20, in, The at least one execution condition is a condition that is satisfied for all wireless devices in the cell from which the activation indication is sent.

25. The wireless device of claim 20, wherein The at least one processor is further adapted to: While the reporting configuration is deactivated, evaluating whether the at least one execution condition for measurement reporting is met is skipped.

26. The wireless device of claim 16, wherein: The at least one processor is further adapted to: While the reporting configuration is deactivated, sending a measurement report based on the measurement configuration is skipped.

27. The wireless device according to claim 16, in, The measurement report includes information notifying that the measurement report is based on a reporting configuration activated upon receipt of the activation indication.

28. The wireless device according to claim 16, in, The measurement report includes information for notifying that the measurement report is sent when the activation indication is received.

29. The wireless device of claim 16, wherein: The at least one processor is further adapted to: receiving mobility information from the network in response to the measurement report; and Mobility is performed based on the mobility information.

30. The wireless device of claim 16, in, The wireless device communicates with at least one of a user device other than the wireless device, a network, or an autonomous vehicle.

31. A processor for a wireless device in a wireless communication system, wherein: The processor is configured to control the wireless device to perform operations including: receiving a reporting configuration associated with the activation indication from the network; Considering said reporting configuration to be deactivated; activating the reporting configuration upon receiving the activation indication; and A measurement report is sent to the network based on the reporting configuration.

32. A non-transitory computer-readable medium storing a plurality of instructions that, when executed by a processor of a wireless device, cause the wireless device to perform operations comprising: receiving a reporting configuration associated with the activation indication from the network; Considering said reporting configuration to be deactivated; activating the reporting configuration upon receiving the activation indication; as well as A measurement report is sent to the network based on the reporting configuration.

33. A method performed by a first base station in a wireless communication system, the method comprising: sending a reporting configuration associated with the activation indication to the wireless device, The reporting configuration includes information notifying that the reporting configuration associated with the activation indication is deactivated in the absence of the activation indication; sending the activation indication to the wireless device; and A measurement report is received from the wireless device based on the reporting configuration.

34. A base station in a wireless communication system, the base station comprising: transceiver; Memory; as well as a processor operatively coupled to the transceiver and the memory and adapted to: sending a reporting configuration associated with the activation indication to the wireless device, The reporting configuration includes information notifying that the reporting configuration associated with the activation indication is deactivated in the absence of the activation indication; sending the activation indication to the wireless device; and A measurement report is received from the wireless device based on the reporting configuration.

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