Method and apparatus for conditional mobility configuration in wireless communication system

Abstract

A method and apparatus for conditional mobility configuration in a wireless communication system are provided. The method comprises: receiving, from a source secondary node (SN), a first measurement configuration comprising a first measurement identification (ID) related to conditional mobility for a first target SN; transmitting, to a second target SN, information informing the first measurement ID about conditional mobility for the first target SN; receiving a second measurement configuration from the second target SN, where the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN; and transmitting a conditional mobility configuration including the first measurement configuration and the second measurement configuration to a wireless device.

Description

Technical Field

[0001] This disclosure relates to a method and apparatus for configuring conditional mobility in a wireless communication system. Background Technology

[0002] The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a technology that enables high-speed packet communication. Many proposals have been put forward for LTE objectives, including those aimed at reducing user and vendor costs, improving quality of service, and expanding and improving coverage and system capacity. As upper-layer requirements, 3GPP LTE needs to reduce cost per bit, increase service availability, allow flexible use of frequency bands, have a simple architecture, open interfaces, and appropriate power consumption for 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 the new RAT (Radio Access Technology) to meet both urgent market demands and the longer-term requirements outlined in the ITU Radiocommunication Sector (ITU-R) International Mobile Telecommunications (IMT)-2020 process. Furthermore, NR should be able to utilize any spectrum band, at least up to 100 GHz, that can be used for wireless communication even in the more distant future.

[0004] The goal of NR is 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), and more. NR should be inherently backward compatible. Summary of the Invention

[0005] Technical issues

[0006] If the UE believes that the Conditional PSCell Addition (CPA) / Conditional PSCell Change (CPC) configuration is valid even after the SN is changed, the UE will refer to the measurement configuration configured by the new SN to find the execution condition indicated by the measurement ID in the CPA / CPC configuration configured by the previous SN.

[0007] However, the target SN does not know which measurement ID is used in the area-specific CPA / CPC configured by the source SN, so it can use the measurement ID configured in the area-specific CPA / CPC for other purposes (e.g., for event A3 reporting).

[0008] Therefore, it is necessary to study the conditional mobility configuration in wireless communication systems.

[0009] Solution to the problem

[0010] In one aspect, a method is provided performed by a master node (MN). The method includes: receiving from a source secondary node (SN) a first measurement configuration including a first measurement identifier (ID) related to conditional mobility for a first target SN; sending to a second target SN information notifying that the first measurement ID is related to the conditional mobility for the first target SN; receiving from the second target SN a second measurement configuration, wherein the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN; and sending to a wireless device a conditional mobility configuration including the first measurement configuration and the second measurement configuration.

[0011] On the other hand, an apparatus for implementing the above method is provided.

[0012] Beneficial effects of the invention

[0013] This disclosure can have various beneficial effects.

[0014] According to some embodiments of this disclosure, radio access network (RAN) nodes can efficiently handle conditional mobility configurations.

[0015] For example, the target SN for a region-specific CPA / CPC can freely use measurement IDs not used for the region-specific CPA / CPC configuration, such as for configuring service or neighboring cell measurements. Measurement IDs used by the source SN for the region-specific CPA / CPC configuration can also be retained in the target SN of the region-specific CPA / CPC.

[0016] For example, the source SN and the target SN can use the same measurement ID for measurement configurations targeting conditional mobility.

[0017] According to some embodiments of this disclosure, wireless communication systems can effectively utilize resources configured for conditional mobility.

[0018] The beneficial effects that can be obtained through specific embodiments of this disclosure are not limited to those listed above. For example, various technical effects may exist that can be understood and / or derived by those skilled in the art based on this disclosure. Therefore, the specific effects of this disclosure are not limited to those explicitly described herein, but may include various effects that can be understood or derived from the technical features of this disclosure. Attached Figure Description

[0019] Figure 1 An example of a communication system that applies the implementation of this disclosure is shown.

[0020] Figure 2 An example of a wireless device that applies the implementation of this disclosure is shown.

[0021] Figure 3 An example of a wireless device that applies the implementation of this disclosure is shown.

[0022] Figure 4 Another example of a wireless device that applies the implementation of this disclosure is shown.

[0023] Figure 5 An example of a UE that applies the implementation of this disclosure is shown.

[0024] Figure 6 and Figure 7 An example of a protocol stack in a 3GPP-based wireless communication system applying the implementation of this disclosure is shown.

[0025] Figure 8 The frame structure in a 3GPP-based wireless communication system applying the implementation of this disclosure is shown.

[0026] Figure 9 An example of a data flow in a 3GPP NR system applying the implementation of this disclosure is shown.

[0027] Figure 10 An example of a measurement report applying embodiments of this disclosure is shown.

[0028] Figure 11 An example of a conditional mobility configuration configured by the source SCG is shown.

[0029] Figure 12 Examples of methods for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure are shown.

[0030] Figure 13 An example of a method for processing measurement configurations for region-specific conditional mobility is shown.

[0031] Figure 14 Examples of methods for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure are shown. Detailed Implementation

[0032] The following technologies, devices, and systems can be applied to a variety of wireless multiple access systems. Examples of multiple access systems include Code Division Multiple Access (CDMA) systems, Frequency Division Multiple Access (FDMA) systems, Time Division Multiple Access (TDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Multi-Carrier Frequency Division Multiple Access (MC-FDMA) systems. CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM), Universal Packet Radio Service (GPRS), or Enhanced Data Rate Evolution of GSM (EDGE). OFDMA can be implemented using radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or Evolved UTRA (E-UTRA). UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE uses OFDMA in DL and SC-FDMA in UL. LTE-Advanced (LTE-A) is an evolution of 3GPP LTE.

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

[0034] For terms and techniques used in this disclosure that are not specifically described in this disclosure, please refer to wireless communication standards documents published prior to this disclosure.

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

[0036] In this disclosure, a forward slash ( / ) or a comma (,) can mean "and / or". For example, "A / B" can mean "A and / or B". Therefore, "A / B" can mean "A only", "B only", or "both A and B". For example, "A, B, C" can mean "A, B, or C".

[0037] In this disclosure, "at least one of A and B" can mean "only A", "only B" or "both A and B". Furthermore, the expressions "at least one of A or B" or "at least one of A and / or B" in this disclosure can be interpreted as the same as "at least one of A and B".

[0038] Additionally, in this disclosure, "at least one of A, B, and C" may mean "A only", "B only", "C only" or "any combination of A, B, and C". Furthermore, "at least one of A, B, or C" or "at least one of A, B, and / or C" may mean "at least one of A, B, and C".

[0039] Furthermore, the brackets used in this disclosure may mean "for example". Specifically, when shown as "Control Information (PDCCH)", "PDCCH" can be cited as an example of "Control Information". In other words, "Control Information" in this disclosure is not limited to "PDCCH", and "PDCCH" can be cited as an example of "Control Information". Additionally, even when shown as "Control Information (i.e., PDCCH)", "PDCCH" can be cited as an example of "Control Information".

[0040] The technical features described individually in a single figure in this disclosure can be implemented individually or simultaneously.

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

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

[0043] Figure 1 An example of a communication system that applies the implementation of this disclosure is shown.

[0044] exist Figure 1 The 5G use cases shown are merely exemplary, and the technical features of this disclosure can be applied to scenarios not described herein. Figure 1 Other 5G use cases are shown in the diagram.

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

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

[0047] eMBB goes far beyond basic mobile internet access and covers a wealth of two-way work, 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 reason for the increased service capacity is 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 be used more widely. These many 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 for accelerating the growth of uplink data transmission rates. 5G is also used for remote work in the cloud. When using haptic 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 increasing the demand for mobile broadband capabilities. Entertainment is essential for smartphones and tablets anywhere, including in highly mobile environments such as trains, vehicles, and airplanes. Other use cases include augmented reality for entertainment and information retrieval. In this case, augmented reality requires very low latency and instantaneous data capacity.

[0048] Additionally, one of the most anticipated 5G use cases involves the ability to seamlessly connect embedded sensors across all sectors, namely, mMTC (modular machine-type communications). The number of potential Internet of Things (IoT) devices is expected to reach 204 billion by 2020. Industrial IoT is one of the key categories performing key roles in enabling smart cities, asset tracking, smart utilities, agriculture, and security infrastructure through 5G.

[0049] URLLC encompasses new services that will transform industry (such as autonomous vehicles) through remote control of the main infrastructure and ultra-reliable / available low-latency links. Levels of reliability and latency are essential for controlling smart grids, automating industry, enabling robotics, and controlling and adapting drones.

[0050] 5G is the means to deliver streams assessed at hundreds of megabits per second to gigabits per second and can complement fiber-to-the-home (FTTH) and wired broadband (or DOCSIS). Such speeds are needed to deliver TV at 4K or higher resolutions (6K, 8K, and more), as well as virtual reality and augmented reality. Virtual reality (VR) and augmented reality (AR) applications include almost immersive motion games. Specific applications may require special network configurations. For example, for VR games, game companies need to integrate their core servers into the network operator's edge network servers to minimize latency.

[0051] The automotive industry, along with numerous use cases for mobile communications in vehicles, is expected to be a significant new driving force in 5G. For example, passenger entertainment requires high concurrent capacity and highly mobile broadband. This is because future users continue to expect high-quality connectivity regardless of their location and speed. Another use case in the automotive sector is AR dashboards. AR dashboards allow drivers to identify objects in the dark in addition to those seen through the front window, displaying distances and movement of objects by overlaying information spoken to the driver. In the future, wireless modules will enable communication between vehicles, information exchange between vehicles and supporting infrastructure, and information exchange between vehicles and other connected devices (e.g., pedestrian-accompanied devices). Safety systems will guide alternative routes, allowing drivers to drive more safely and thus reducing the risk of accidents. The next stage will be remotely controlled or self-driving vehicles. This requires very high reliability and very fast communication between different self-driving vehicles and between vehicles and infrastructure. In the future, self-driving vehicles will perform all driving activities, and drivers will only focus on abnormal traffic that the vehicle cannot recognize. The technological requirements for self-driving vehicles necessitate ultra-low latency and ultra-high reliability, increasing traffic safety to levels that cannot be achieved by humans.

[0052] Smart cities and smart homes / buildings, touted as part of a smart society, will be embedded in high-density wireless sensor networks. These distributed networks of smart sensors will identify conditions for cost- and energy-efficient maintenance in cities or homes. Similar configurations can be implemented for specific homes. All temperature sensors, window and heating controllers, burglar alarms, and home appliances will be wirelessly connected. Many of these sensors are typically low in terms of data transmission rates, power consumption, 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 gases, at a higher level necessitates automated control of distribution sensor networks. Smart grids collect information and use digital information and communication technologies to connect sensors to each other, thereby enabling actions based on the collected information. Because this information can include the behavior of supply companies and consumers, smart grids can improve the distribution of fuels such as electricity through methods that are efficient, reliable, economically feasible, production sustainable, and automated. Smart grids can also be considered as another type of sensor network with low latency.

[0054] Mission-critical applications (such as e-health) are one of the use cases for 5G. The health component includes many applications that can benefit from mobile communications. Communication systems can support telemedicine, enabling the delivery of clinical care in remote locations. Telemedicine can help reduce barriers of distance and improve access to healthcare services that are not readily available in remote rural areas. Telemedicine is also used to administer vital treatments and save lives in emergency situations. Mobile communication-based wireless sensor networks can provide remote monitoring and sensing of parameters such as heart rate and blood pressure.

[0055] Wireless and mobile communications are becoming increasingly important in industrial applications. Cabling is costly in terms of installation and maintenance. Therefore, the possibility of replacing cables with reconfigurable radio links presents an attractive opportunity in many industrial sectors. However, to achieve this replacement, wireless connections need to have similar latency, reliability, and capacity to cables, and simplified management of wireless connections is required. When connecting to 5G, low latency and a very low error probability become 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 demand location information with wide coverage 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. Although Figure 1 An example of a 5G network as a network of communication system 1 is illustrated, but the implementation of this disclosure is not limited to 5G systems and can be applied to future communication systems other than 5G systems.

[0058] BS200 and Network 300 can be implemented as wireless devices, and a particular wireless device can operate as a BS / network node relative to other wireless devices.

[0059] Wireless devices 100a to 100f represent devices that use radio access technology (RAT) (e.g., 5G New RAT (NR) or LTE) to perform communication, and may be referred to as communication / wireless / 5G devices. Wireless devices 100a to 100f may include, but are not limited to, robots 100a, vehicles 100b-1 and 100b-2, extended reality (XR) devices 100c, handheld devices 100d, home appliances 100e, IoT devices 100f, and artificial intelligence (AI) devices / servers 400. For example, vehicles may include vehicles with wireless communication capabilities, autonomous vehicles, and vehicles capable of performing communication between vehicles. Vehicles may include unmanned aerial vehicles (UAVs) (e.g., drones). XR devices may include AR / VR / mixed reality (MR) devices and may be implemented in the form of head-mounted displays (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliance devices, digital signage, vehicles, robots, etc. Handheld devices may include smartphones, smart tablets, wearable devices (e.g., smartwatches or smart glasses), and computers (e.g., laptops). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters.

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

[0061] UAVs can be, for example, aircraft that are driven by wireless control signals without any human passengers.

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

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

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

[0065] Medical devices can be, for example, devices used for the purpose of diagnosing, treating, alleviating, curing, or preventing disease. For example, a medical device can be a device used for the purpose of diagnosing, treating, alleviating, or correcting an injury or lesion. For example, a medical device can be a device used for the purpose of examining, replacing, or modifying a structure or function. For example, a medical device can be a device used for regulating pregnancy. For example, medical devices can include devices for treatment, devices for operation, devices for (in vitro) diagnosis, hearing aids, or devices for surgery.

[0066] Safety devices can be, for example, devices installed to prevent potential hazards and maintain safety. Safety devices can be, for instance, cameras, closed-circuit television (CCTV), recorders, or black boxes.

[0067] Fintech devices can be, for example, devices capable of providing financial services such as mobile payments. For instance, a fintech device can include a payment device or a point-of-sale (POS) system.

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

[0069] Wireless devices 100a to 100f can connect to network 300 via BS200. 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 super 5G networks. Although wireless devices 100a to 100f can communicate with each other via BS200 / network 300, wireless devices 100a to 100f can also perform direct communication with each other without going through BS200 / network 300 (e.g., sidelink communication). For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0070] Wireless communication / connections 150a, 150b, and 150c can be established between wireless devices 100a to 100f and / or between wireless devices 100a to 100f and BS200 and / or between BS200. In this document, wireless communication / connections can be established via various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication (or device-to-device (D2D) communication) 150b, and inter-base station communication 150c (e.g., relay, integrated access and backhaul (IAB)). Wireless devices 100a to 100f and BS200 / wireless devices 100a to 100f can transmit / receive radio signals to each other via wireless communication / connections 150a, 150b, and 150c. For example, wireless communication / connections 150a, 150b, and 150c can transmit / receive signals via various physical channels. Therefore, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for transmitting / receiving radio signals can be performed based on various proposals of this disclosure.

[0071] Here, the radio communication technologies implemented in the wireless devices of this disclosure may include narrowband Internet of Things (NB-IoT) technologies for low-power communication, as well as LTE, NR, and 6G. For example, NB-IoT technology may be an example of low-power wide-area network (LPWAN) technology, implemented in specifications such as LTE Cat NB1 and / or LTE Cat NB2, and may not be limited to the aforementioned names. Additionally and / or alternatively, the radio communication technologies implemented in the wireless devices of this disclosure may communicate based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and may be referred to by various names such as enhanced machine-type communication (eMTC). For example, LTE-M technology may be implemented in at least one of various specifications such as 1) LTE Cat 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine-type communication, and / or 7) LTE M, and may not be limited to the aforementioned names. Additionally and / or alternatively, the radio communication technology implemented in the wireless devices of this disclosure may include at least one of ZigBee, Bluetooth, and / or LPWAN, which are considered low-power communication technologies, and may not be limited to the names mentioned above. For example, ZigBee technology may be based on various specifications such as IEEE 802.15.4 to generate personal area networks (PANs) associated with small / low-power digital communication, and may be referred to by various names.

[0072] Figure 2An example of a wireless device that applies the implementation of this disclosure is shown.

[0073] Reference Figure 2 The first wireless device 100 and the second wireless device 200 can transmit / receive radio signals to / from external devices via various RATs (e.g., LTE and NR). Figure 2 In this context, {the first wireless device 100 and the second wireless device 200} can 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 additionally include one or more transceivers 106 and / or one or more antennas 108. The processors 102 may control the memories 104 and / or the transceivers 106, and may be configured to implement the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts described in this disclosure. For example, the processors 102 may process information in the memories 104 to generate a first information / signal, and then transmit a radio signal including the first information / signal via the transceivers 106. The processors 102 may receive a radio signal including a second information / signal via the transceivers 106, and then store the information obtained by processing the second information / signal in the memories 104. The memories 104 may be connected to the processors 102 and may store various information related to the operation of the processors 102. For example, the memories 104 may store commands for performing part or all of the processes controlled by the processors 102, or software code for performing the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts described in this disclosure. In this document, processor 102 and memory 104 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). Transceiver 106 may be connected to processor 102 and transmit and / or receive radio signals via one or more antennas 108. Each of transceivers 106 may include a transmitter and / or a receiver. Transceivers 106 may be used interchangeably with radio frequency (RF) units. In this disclosure, first wireless device 100 may represent a communication modem / circuit / chip.

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

[0076] The hardware elements of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers can be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 can implement one or more layers (e.g., functional layers such as the Physical (PHY) layer, Media Access Control (MAC) layer, Radio Link Control (RLC) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Resource Control (RRC) layer, and Service Data Adaptive Protocol (SDAP) layer). According to the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure, one or more processors 102 and 202 can generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs). One or more processors 102 and 202 can generate messages, control information, data, or information according to the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information, in accordance with the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206, and acquire PDUs, SDUs, messages, control information, data, or information in accordance with the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure.

[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 perform 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 operation flowcharts disclosed in this disclosure may be implemented in the form of firmware or software in the form of code, commands and / or sets of commands.

[0078] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories 104 and 204 may be configured as read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, registers, cache memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 may be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0079] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed herein to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed herein from one or more other devices. For example, one or more transceivers 106 and 206 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 perform control such that one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may perform control such that one or more transceivers 106 and 206 may 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 one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed herein via one or more antennas 108 and 208. In this disclosure, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports).

[0081] One or more transceivers 106 and 206 can convert received radio signals / channels, etc., from RF band signals to baseband signals for processing received user data, control information, radio signals / channels, etc. One or more transceivers 106 and 206 can also convert user data, control information, radio signals / channels, etc., processed by one or more processors 102 and 202 from baseband signals to RF band signals. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters. For example, transceivers 106 and 206, under the control of processors 102 and 202, can up-convert OFDM baseband signals 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 can receive OFDM signals at the carrier frequency and, under the control of processors 102 and 202, down-convert OFDM signals to OFDM baseband signals using their (analog) oscillators and / or filters.

[0082] In the implementation of this disclosure, the UE can operate as a transmitting device in the uplink (UL) and as a receiving device in the downlink (DL). In the implementation of this disclosure, the BS can operate as a receiving device in the UL and as a transmitting device in the DL. For ease of description, it is primarily assumed below that the first wireless device 100 acts as the UE and the second wireless device 200 acts as the BS. For example, a processor 102 connected to, installed on, or started in the first wireless device 100 can be configured to perform UE actions according to the implementation of this disclosure, or to control the transceiver 106 to perform UE actions according to the implementation of this disclosure. A processor 202 connected to, installed on, or started in the second wireless device 200 can be configured to perform BS actions according to the implementation of this disclosure, or to control the transceiver 206 to perform BS actions according to the implementation of this disclosure.

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

[0084] Figure 3 An example of a wireless device that applies the implementation of this disclosure is shown.

[0085] Wireless devices can be implemented in various forms depending on the use case / service (see reference). Figure 1 ).

[0086] Reference Figure 3 Wireless devices 100 and 200 can correspond to Figure 2 The wireless devices 100 and 200 can be configured from various elements, components, units / parts, and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional component 140. The communication unit 110 may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include... Figure 2 One or more processors 102 and 202 and / or Figure 2 One or more memories 104 and 204. For example, transceiver 114 may include... Figure 2 One or more transceivers 106 and 206 and / or Figure 2One or more antennas 108 and 208. Control unit 120 is electrically connected to communication unit 110, memory unit 130, and add-on components 140, and controls the overall operation of each of wireless devices 100 and 200. For example, control unit 120 can control the electrical / mechanical operation of each of wireless devices 100 and 200 based on programs / code / commands / information stored in memory unit 130. Control unit 120 can transmit information stored in memory unit 130 to an external source (e.g., another communication device) via communication unit 110 through a wireless / wired interface, or store information received from an external source (e.g., another communication device) via wireless / wired interface in memory unit 130 via communication unit 110.

[0087] The add-on component 140 can be configured differently depending on the type of wireless devices 100 and 200. For example, the add-on 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 drive unit, and a computing unit. Wireless devices 100 and 200 can be, but are not limited to, robots (…). Figure 1 100a), vehicles ( Figure 1 100b-1 and 100b-2), XR device ( Figure 1 100c), handheld device ( Figure 1 100d), home appliances ( Figure 1 100e), IoT devices ( Figure 1 100f), digital broadcasting terminals, holographic devices, public safety devices, MTC devices, medical devices, Fintech devices (or financial devices), security devices, climate / environment devices, AI servers / devices ( Figure 1 400), BSS ( Figure 1 This can be achieved in the form of wireless devices 100 and 200, network nodes, etc. Wireless devices 100 and 200 can be used in mobile or fixed locations depending on the usage example / service.

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

[0089] Figure 4 Another example of a wireless device that applies the implementation of this disclosure is shown.

[0090] Reference Figure 4 Wireless devices 100 and 200 can correspond to Figure 2 The wireless devices 100 and 200 can be configured from various elements, components, units / parts and / or modules.

[0091] The 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 operatively connected to processor 102. Memory 104 may store various types of information and / or instructions. Memory 104 may store software code 105, which implements instructions that, when executed by processor 102, execute the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. For example, software code 105 may implement instructions that, when executed by processor 102, execute the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. 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 operatively connected to processor 202. Memory 204 may store various types of information and / or instructions. Memory 204 may store software code 205, which implements instructions that, when executed by processor 202, execute the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. For example, software code 205 may implement instructions that, when executed by processor 202, execute the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. 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 that applies the implementation of this disclosure is shown.

[0094] Reference Figure 5 UE 100 can correspond to the attached Figure 2 The first wireless device 100 and / or Figure 4 The first wireless device 100.

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

[0096] Processor 102 may be configured to implement the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. Processor 102 may be configured to control one or more other components of UE 100 to implement the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed in this disclosure. Layers of the radio interface protocol may be implemented in processor 102. Processor 102 may include an ASIC, other chipsets, logic circuits, and / or data processing means. Processor 102 may be an application processor. 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 processor 102 can be found in […]. Manufacturing SNAPDRAGON TM Series processors EXYNOS manufacturedTM Series processors Manufactured A-series processors, HELIO manufactured TM Series processors Manufactured ATOM TM This series of processors or the corresponding next-generation processors.

[0097] Memory 104 is operatively coupled to processor 102 and stores various information to operate processor 102. Memory 104 may include ROM, RAM, flash memory, memory card, storage medium, and / or other storage devices. When the implementation is software-based, the techniques described herein can be implemented using modules (e.g., processes, functions, etc.) that perform the descriptions, functions, processes, suggestions, methods, and / or operation flowcharts disclosed herein. Modules may be stored in memory 104 and executed by processor 102. Memory 104 may be implemented within or outside processor 102, in which case memory 104 may be communicatively coupled to processor 102 via various means known in the art.

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

[0099] The power management module 110 manages the power of the processor 102 and / or transceiver 106. The battery 112 supplies power to the power management module 110.

[0100] Display 114 outputs the results processed by processor 102. Keyboard 116 receives input to be used by processor 102. Keyboard 16 can be displayed on display 114.

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

[0102] Speaker 120 outputs sound-related results processed by processor 102. Microphone 122 receives sound-related inputs to be used by processor 102.

[0103] Figure 6 and Figure 7 An example of a protocol stack in a 3GPP-based wireless communication system applying the implementation of this disclosure is shown.

[0104] Specifically, Figure 6 An example of the user plane protocol stack for the radio interface between the UE and the BS is illustrated, 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 the path through which control messages used to manage calls made by the UE and the network are transmitted. The user plane refers to the path through which data generated in the application layer (e.g., voice data or Internet packet data) is transmitted. See reference... Figure 6 The user plane protocol stack can be divided into Layer 1 (i.e., the PHY layer) and Layer 2. (See reference...) Figure 7 The control plane protocol stack can be divided into Layer 1 (i.e., the PHY layer), Layer 2, Layer 3 (e.g., the RRC layer), and the Non-Access Layer (NAS). Layers 1, 2, and 3 are collectively referred to as the Access Layer (AS).

[0105] In 3GPP LTE systems, Layer 2 is separated into the following sublayers: MAC, RLC, and PDCP. In 3GPP NR systems, Layer 2 is separated 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) streams to the 5G core network.

[0106] In the 3GPP NR system, 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 to / from the transport channel to / from the physical layer to transport blocks (TBs); scheduling information reporting; error correction via Hybrid Automatic Repeat Request (HARQ) (one HARQ entity per cell in the case of carrier aggregation (CA); priority handling between UEs via dynamic scheduling; priority handling between logical channels of a UE via logical channel priority ordering; and padding. A single MAC entity can support multiple parameter sets, transmission timings, and cells. Mapping constraints in logical channel priority ordering control which parameter set(s), cell(s), and transmission timing(s) a logical channel(s) can use.

[0107] MAC provides different types of data transmission services. To accommodate these different services, various types of logical channels are defined, each supporting the transmission of a specific type of information. Each logical channel type is defined by the type of information being transmitted. Logical channels are divided into two groups: control channels and traffic channels. Control channels are used only for transmitting control plane information, and traffic channels are used only for transmitting user plane information. The Broadcast Control Channel (BCCH) is a downlink logical channel used for broadcasting system control information; the Paging Control Channel (PCCH) is a downlink logical channel for transmitting 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 without an RRC connection to the network; and the Dedicated Control Channel (DCCH) is a point-to-point bidirectional logical channel used by UEs with an RRC connection to send dedicated control information between the UE and the network. The Dedicated Traffic Channel (DTCH) is a point-to-point logical channel dedicated to a single UE for transmitting user information. DTCHs 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). RLC configuration is per logical channel and is not dependent 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: transmission of upper-layer PDUs; sequence numbering independent of sequence numbering in PDCP (UM and AM); error correction via ARQ (AM only); RLC SDU segmentation (AM and UM) and re-segmentation (AM only); SDU reassembly (AM and UM); duplicate detection (AM only); RLC SDU discarding (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); transmission of user data; reordering and duplicate detection; in-order delivery; PDCP PDU routing (in the case of separate bearers); retransmission of PDCP SDUs; encryption, decryption, and integrity protection; PDCP SDU dropping; PDCP re-establishment and data recovery for RLC AM; PDCP status reporting for RLC AM; and PDCP PDU duplication and duplicate dropping indication to lower layers. The main services and functions of the PDCP sublayer for the control plane include: sequence numbering; encryption, decryption, and integrity protection; transmission of control plane data; reordering and duplicate detection; in-order delivery; and PDCP PDU duplication and duplicate dropping indication to lower layers.

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

[0111] In the 3GPP NR system, the main services and functions of the RRC sublayer include: broadcasting 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 (SRB) and data radio bearers (DRB); mobility functions (including: handover and context delivery, 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 reports; detection and recovery of radio link failures; and NAS message delivery from UE to NAS / from NAS to UE.

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

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

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

[0115] Table 1 shows the results based on subcarrier spacing Δf = 2. u *Number of OFDM symbols per slot at 15kHz N slot symb The number of time slots N in each frame frame,u slot And the number of time slots N for each subframe of a 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 results based on subcarrier spacing Δf = 2. u *Number of OFDM symbols per slot at 15kHz N slot symb The number of time slots N in each frame frame,u slot And the number of time slots N for each subframe of the extended CP.subframe,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 time slot comprises 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 generated from the signaling of higher layers (e.g., RRC signaling). start,u grid Initially, N was defined. size,u grid,x *N RB sc Subcarriers and N subframe,u symb A resource grid of N OFDM symbols, where N size,u grid,x This represents the number of resource blocks (RBs) in the resource grid, where the subscript x represents the downlink DL and the uplink UL. N RB sc N is the number of subcarriers in each RB. In 3GPP-based wireless communication systems, N PB sc Typically, it is 12. For a given antenna port p, subcarrier spacing configuration u, and transmission direction (DL or UL), there exists a resource grid. The carrier bandwidth N for the subcarrier spacing configuration u is... size,u grid Given by higher-level 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 a 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 3GPP-based wireless communication systems, RBs are defined by 12 consecutive subcarriers in the frequency domain. 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 serves as the common reference point for the resource block grid. In 3GPP NR systems, PRBs are defined within the Bandwidth Part (BWP) and numbered from 0 to N. size BWP，i -1 is the number, where i is the number of the bandwidth section. The physical resource block n within bandwidth section i... PRB With public resource block n CRB The relationship between n is as follows: PRB =n CRB +Nsize BWP，i , where N size BWP，i The bandwidth portion is the common resource block starting relative to CRB 0. A BWP comprises multiple consecutive 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. Only one BWP can be active at a time among those configured for the UE. The active BWP is defined within the UE's operating bandwidth of the cell.

[0122] NR bands can be defined as two types of frequency ranges, namely FR1 and FR2. The numerical values ​​of the frequency ranges can vary. For example, the frequency ranges of the two types (FR1 and FR2) can be shown in Table 3 below. For ease of explanation, in the frequency ranges used in NR systems, FR1 can represent "below 6 GHz," FR2 can represent "above 6 GHz," and can be referred to as millimeter wave (mmW).

[0123] [Table 3]

[0124] Frequency range name Corresponding frequency range Subcarrier spacing FR1 450MHz-6000MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0125] As mentioned above, the frequency range of the NR system can be varied. For example, FR1 can include a frequency band from 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 greater. For example, the 6 GHz (or 5850, 5900, 5925 MHz, etc.) or greater frequency band included in FR1 can include unlicensed frequency bands. Unlicensed frequency bands can be used for various purposes, such as for vehicle communications (e.g., autonomous driving).

[0126] [Table 4]

[0127] Frequency range name Corresponding frequency range Subcarrier spacing FR1 410MHz-7125MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0128] In this disclosure, the term "cell" can refer to a geographical area in which one or more nodes provide a communication system or to a radio resource. A "cell" as a geographical area can be understood as the 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 bandwidth, which is a frequency range configured by the carrier. A "cell" associated with a radio resource is defined by a combination of downlink and uplink resources (e.g., a combination of DL component carriers (CCs) and UL CCs). A cell can be configured by downlink resources only, or it can be configured by both downlink and uplink resources. Since DL coverage (which is the range within which a node can transmit a valid signal) and 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, a node's coverage area can be associated with the coverage area of ​​the "cell" of the radio resources used by the node. Therefore, the term "cell" can be used to sometimes indicate the service coverage area of ​​a node, at other times to indicate a radio resource, or at other times to indicate the range within which a signal using a radio resource can reach with effective strength. In CA, two or more CCs are aggregated. A UE can receive or transmit on one or more CCs simultaneously, depending on its capabilities. CA is supported for both continuous and non-continuous CCs. When CA is configured, the UE has only one RRC connection with the network. During RRC connection establishment / re-establishment / handover, one serving cell provides NAS mobility information, and during RRC connection re-establishment / handover, one serving cell provides security input. This cell is called the primary cell (PCell). The PCell is the cell operating on the primary frequency, where the UE performs the initial connection establishment procedure or initiates the connection re-establishment procedure. Depending on the UE's capabilities, secondary cells (SCells) can be configured to form a set of serving cells together with the PCell. An SCell is a cell that provides additional radio resources above a special cell (PCell). Therefore, the set of serving cells configured 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 the primary cell group (MCG) or the primary SCell (PSCell) of the secondary cell group (SCG). The SpCell supports PUCCH transmission and contention-based random access and is always active. MCG is the set of serving cells associated with the primary node, which includes SpCell (PCell) and optionally one or more SCells. For a UE with a DC configured, SCG is a subset of serving cells associated with the secondary node, which includes PSCell and zero or more SCells. For a UE in RRC_CONNECTED without a CA / DC configured, only one serving cell consisting of PCells exists.For a UE configured with CA / DC in RRC_CONNECTED, the term "serving cell" is used to represent the set of cells consisting of SpCell and all SCells. In the DC, two MAC entities are configured in the UE: one for the MCG and one for the SCG.

[0129] Figure 9 An example of a data flow in a 3GPP NR system applying the implementation of this disclosure is shown.

[0130] Reference Figure 9 “RB” indicates a radio bearer, and “H” indicates a header. Radio bearers are classified into two groups: DRBs for user plane data and SRBs for control plane data. MAC PDUs are sent / received to / from external devices via the PHY layer using radio resources. MAC PDUs arrive at the PHY layer in the form of transport blocks.

[0131] In the PHY layer, the uplink transport channels UL-SCH and RACH are mapped to their respective physical channels PUSCH and PRACH, 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. MAC PDUs associated with UL-SCH are transmitted by the UE via PUSCH based on UL authorization, and MAC PDUs associated with DL-SCH are transmitted by the BS via PDSCH based on DL assignment.

[0132] The technical characteristics related to measurement are described below. See Section 5.5 of 3GPP TS 38.311v17.2.0 for reference.

[0133] The network can configure an RRC_CONNECTED UE to perform measurements. The network can configure the UE to report measurements based on the measurement configuration, or to perform conditional reconfiguration assessments based on conditional reconfiguration. Measurement configurations are provided using dedicated signaling (i.e., using RRCReconfiguration or RRCReconfiguration).

[0134] The network can configure the UE to perform the following types of measurements:

[0135] -NR measurement;

[0136] -E-UTRA frequency RAT inter-measurement;

[0137] -RAT measurements of UTRA-FDD frequency;

[0138] - NR side link measurement of L2 U2N relay UE.

[0139] The network can configure the UE to report the following measurement information based on SS / PBCH blocks:

[0140] - Measurement results for each SS / PBCH block;

[0141] - Measurement results per cell based on SS / PBCH blocks;

[0142] -SS / PBCH block index.

[0143] The network can configure the UE to report the following measurement information based on CSI-RS resources:

[0144] - Measurement results per CSI-RS resource;

[0145] - Measurement results per cell based on CSI-RS resources;

[0146] -CSI-RS Resource Measurement Identifier.

[0147] The network can configure the UE to perform the following types of measurements for NR sidelinks and V2X sidelinks:

[0148] -CBR measurement.

[0149] The network can configure the UE to report the following CLI measurement information based on SRS resources:

[0150] - Measurement results per SRS resource;

[0151] -SRS Resource Index.

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

[0153] - Measurement results per CLI-RSSI resource;

[0154] -CLI-RSSI Resource Index.

[0155] The network can configure the UE to report the following Rx-Tx time difference measurement information based on the CSI-RS or PRS used for tracking:

[0156] -UE Rx-Tx time difference measurement results.

[0157] The measurement configuration includes the following parameters:

[0158] 1. Measurement Object: A list of objects that the UE should measure.

[0159] 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 applicable to event assessments or measurement reports. Allowed cells are the only cells applicable to event assessments or measurement reports.

[0160] - The measObjectId corresponding to the MO of each serving cell is indicated by the servingCellMO in the serving cell configuration.

[0161] 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 used for event assessments or measurement reports.

[0162] - For RAT-inter-UTRA-FDD measurements, the measurement object is a group of cells on a single UTRA-FDD carrier frequency.

[0163] - For NR side link measurements of L2 U2N relay UEs, the measurement object is the single NR side link frequency to be measured.

[0164] - For CBR measurement of NR sidelink communication, the measurement object is a pool of transmission resources on a single carrier frequency used for NR sidelink communication.

[0165] - For CBR measurements of NR sidelink discovery, the measurement object is a set of discovery-dedicated resource pools or transport resource pools that are also used for NR sidelink discovery on a single carrier frequency used for NR sidelink discovery.

[0166] - For CLI measurements, the measurement object indicates the frequency / time location of the SRS resource and / or CLI-RSSI resource, as well as the subcarrier spacing of the SRS resource to be measured.

[0167] 2. Report Configuration: A list of report configurations, where each measurement object can have one or more report configurations. Each measurement report configuration includes the following:

[0168] - Reporting Criteria: Criteria that trigger the UE to send measurement reports. This can be periodic or a description of a single event.

[0169] -RS type: RS (SS / PBCH block or CSI-RS) used by the UE for beam and cell measurement results.

[0170] - Report format: The UE includes the quantity of each cell and each beam in the measurement report (e.g., RSRP) and other related information, such as the maximum number of cells to be reported and the maximum number of beams per cell.

[0171] In the event of condition reconfiguration, each configuration includes the following:

[0172] - Execution criteria: Criteria used by the UE for conditional reconfiguration execution.

[0173] -RS type: RS used by the UE to obtain beam and cell measurement results (based on SS / PBCH block or based on CSI-RS) for evaluation of condition reconfiguration execution conditions.

[0174] 3. Measurement Identifiers: For measurement reports, a list of measurement identifiers is provided, where each measurement identifier links a measurement object to a report configuration. Multiple measurement identifiers can be configured to link more than one measurement object to the same report configuration, and more than one report configuration to the same measurement object. Measurement identifiers are also included in the measurement report that triggers the report, serving as a reference for the network. For conditional reconfiguration triggers, one measurement identifier is linked to exactly one conditional reconfiguration trigger configuration. A maximum of two measurement identifiers can be linked to a single conditional reconfiguration execution condition.

[0175] 4. Quantity Configuration: The quantity configuration defines the measurement filtering configuration used for all event assessments and related reporting, as well as for periodic reporting of the measurement. For NR measurements, the network can configure up to two quantity configurations using a reference to the configuration to be used in the NR measurement object. In each configuration, different filter coefficients can be configured for different measurement quantities, different RS types, and measurements for each cell and each beam.

[0176] 5. Measurement gap: The time period during which the UE can be used to perform measurements.

[0177] UEs in RRC_CONNECTED state maintain a list of measurement objects, a list of report configurations, and a list of measurement identifiers according to the signaling and procedures outlined in this specification. The list of measurement objects may include NR measurement objects, CLI measurement objects, inter-RAT objects, and L2U2N trunk objects. Similarly, the list of report configurations includes NR, inter-RAT, and L2 U2N trunk report configurations. Any measurement object can be linked to any report configuration of the same RAT type. Some report configurations may not be linked to measurement objects. Likewise, some measurement objects may not be linked to any report configuration.

[0178] The measurement process distinguishes the following types of communities:

[0179] 1. NR Serving Cells - These are SpCells and one or more SCells.

[0180] 2. Listed Cells - These are the cells listed within the measurement object.

[0181] 3. Detected Cells - These are cells that are not listed in the measurement object but are detected by the UE at the SSB frequency and subcarrier spacing indicated by the measurement object.

[0182] For NR measurement objects, the UE measures and reports the serving cell / serving relay UE (for L2 U2N remote UEs), the listed cells, and / or the detected cells. For E-UTRA inter-RAT measurement objects, the UE measures and reports the listed cells and the detected cells, and for RSSI and channel occupancy measurements, the UE measures and reports the configured resources on the indicated frequencies. For UTRA-FDD inter-RAT measurement objects, the UE measures and reports the listed cells. For CLI measurement objects, the UE measures and reports the configured measurement resources (i.e., SRS resources and / or CLI-RSSI resources). For L2 U2N relay objects, the UE measures and reports the serving NR cell and the discovered L2 U2N relay UEs.

[0183] Whenever the procedure specification (other than that contained in Clause 5.5.2) refers to a field, unless otherwise explicitly stated, it refers to the field included in VarMeasConfig, i.e., only the measurement configuration procedure covers the direct UE actions related to the received measConfig.

[0184] In NR-DC, the UE can receive two independent measConfig:

[0185] - The measConfig associated with MCG, which is included in the RRCReconfiguration message received via SRB1; and

[0186] - The measConfig associated with SCG, which is included in the RRCReconfiguration message received via SRB3, or alternatively, in the RRCReconfiguration message embedded in the RRCReconfiguration message received via SRB1.

[0187] In this case, unless otherwise explicitly stated, the UE maintains two independent VarMeasConfig and VarMeasReportList, one associated with each measConfig, and executes all the procedures in Clause 5.5 independently for each measConfig and its associated VarMeasConfig and VarMeasReportList.

[0188] Configuration related to CBR measurement is only included in measConfig associated with MCG.

[0189] Configurations related to Rx-Tx time difference measurement are only included in measConfig associated with MCG.

[0190] Measurement configuration

[0191] The following processes are used in network applications:

[0192] - Ensure that whenever the UE has a measConfig associated with a CG, it includes a measObject for each NRSCell and SpCell of the CG to be measured;

[0193] - Use reportType set to reportCGI for reporting configurations with at most one measurement identifier across all CG configurations;

[0194] - Configure up to one measurement identifier per node for the managed PDCP entity using the reporting configuration with ul-DelayValueConfig;

[0195] - Configure up to one measurement identifier per node-hosted PDCP entity using the reporting configuration with the ul-ExcessDelayConfig;

[0196] - Ensure that in the measConfig associated with CG:

[0197] - For all SSB-based measurements, there exists at most one measurement object with the same ssbFrequency;

[0198] - Includes smtc1 with the same value in any measurement object with the same ssbFrequency, and includes smtc2 with the same value in any measurement object with the same ssbFrequency, and includes smtc3list with the same value in any measurement object with the same ssbFrequency, and includes smtc4list with the same value in any measurement object with the same ssbFrequency;

[0199] - Ensure that all measurement objects with the same ssbFrequency have the same ssbSubcarrierSpacing;

[0200] - Ensure that if the measurement object associated with MCG has the same ssbFrequency as the measurement object associated with SCG:

[0201] - For this ssbFrequency, the measurement window of smtc1 configured by MCG includes the measurement window of smtc1 configured by SCG, or vice versa, with the accuracy of the maximum receiving timing difference.

[0202] If two measurement objects are used for RSSI measurements, the bits in the measurementSlots corresponding to the same time slot in both objects are set to the same value. Furthermore, the endSymbol is the same in both objects.

[0203] - Ensure that the object being measured has the same ssbFquency as the object being measured:

[0204] - For this ssbFrequency, the measurement window according to smtc includes the measurement window according to smtc1, or vice versa, with the accuracy of the maximum receiving timing difference.

[0205] If two measurement objects are used for RSSI measurements, the bits in the measurementSlots corresponding to the same time slot in both objects are set to the same value. Furthermore, the endSymbol is the same in both objects.

[0206] - When the UE is in NE-DC, NR-DC or NR standalone, the report configuration with reportType set to reportSFTD spans at most one measurement identifier across all CG configurations;

[0207] For CSI-RS resources, the network application follows the following process:

[0208] - Ensure that all CSI-RS resources configured in each measurement object have the same center frequency, (startPRB + floor(nrofPRBs / 2)).

[0209] - Ensure that the total number of CSI-RS resources configured in each measurement object does not exceed the maximum number.

[0210] The technical features related to performing the measurement are described below.

[0211] For RRC_CONNECTED measurements, the UE should derive cell measurement results by measuring one or more beams associated with each cell, configured by the network. For all cell measurement results other than those in RRC_CONNECTED (RSSI and CLI), the UE applies Layer 3 filtering before using the measurement results to evaluate reporting criteria, measurement reports, or criteria for trigger condition reconfiguration. For cell measurements, the network can configure RSRP, RSRQ, SINR, RSCP, or EcN0 as trigger values. For CLI measurements, the network can configure SRS-RSRP or CLI-RSSI as trigger values. For cell and beam measurements, the reporting value can be any combination of values ​​(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 trigger value, while for CLI measurements, the reporting value can be SRS-RSRP or CLI-RSSI. For conditional reconfiguration execution, the network can configure a maximum of two quantities, both using the same RS type. The UE should not apply Layer 3 filtering to derive CBR measurements. The UE should not apply Layer 3 filtering to derive Rx-Tx time difference measurements.

[0212] The network can also configure the UE to report measurement information for each beam (which can be the measurement result for each beam with the corresponding beam identifier or just the beam identifier). If the beam measurement information is configured to be included in the measurement report, the UE applies Layer 3 beam filtering. On the other hand, the precise L1 filtering of the beam measurements used to derive the cell measurement results depends on the implementation.

[0213] This disclosure describes events that can be applied to measurement reporting.

[0214] Event A1 (Service becomes better than the threshold)

[0215] Event A2 (Service becomes worse than the threshold)

[0216] Event A3 (The neighbor becomes one offset better than SpCell)

[0217] Event A4 (Neighbors become better than the threshold)

[0218] Event A5 (SpCell becomes worse than threshold1, and the neighbor becomes better than threshold2)

[0219] Event A6 (Neighbor becomes one offset better than SCell)

[0220] Event B1 (RAT neighbors become better than the threshold)

[0221] Event B2 (PCell becomes worse than threshold1 and the inter-RAT neighbors become better than threshold2)

[0222] Event I1 (Interference becomes higher than the threshold)

[0223] Event C1 (NR-side link channel busy ratio is higher than threshold)

[0224] Event C2 (NR-side link channel busy ratio is below threshold)

[0225] CondEvent T1

[0226] Event X1 (Service L2 U2N relay UE becomes worse than threshold1 and NR cell becomes better than threshold2)

[0227] Event X2 (Service L2 U2N relay UE becomes worse than the threshold)

[0228] Event Y1 (PCell becomes worse than threshold1 and candidate L2 U2N relay UE becomes better than threshold2)

[0229] Event Y2 (Candidate L2 U2N relay UE becomes better than the threshold)

[0230] Figure 10 An example of a measurement report applying the implementation of this disclosure is shown.

[0231] The purpose of this process is to transmit the measurement results from the UE to the network. The UE should only initiate this process after successful AS security activation.

[0232] For the measId that triggers the measurement reporting process, the UE should set measResults within the MeasurementReport message, as shown below:

[0233] 1> Set measId as the measurement identifier that triggers the measurement report;

[0234] 1> For each serving cell configured with servingCellMO:

[0235] 2> If the reportConfig associated with the measId that triggered the measurement report includes rsType:

[0236] 3> If the serving cell measurement based on the rsType included in the reportConfig that triggers the measurement report is available:

[0237] 4> Set the measResultServingCell in measResultServingMOList to include the RSRP, RSRQ and available SINR of the serving cell derived from the rsType included in the reportConfig based on the triggered measurement report;

[0238] 2> Otherwise:

[0239] 3> If SSB-based serving cell measurements are available:

[0240] 4> Set the measResultServingCell in measResultServingMOList to include the RSRP, RSRQ and available SINR of the serving cell derived from SSB;

[0241] 3> Otherwise, if serving cell measurements based on CSI-RS are available:

[0242] 4> Set the measResultServingCell in measResultServingMOList to include the RSRP, RSRQ and available SINR of the serving cell derived from CSI-RS;

[0243] 1> Set the servCellId in measResultServingMOList to include each NR serving cell (if any) that is configured with servingCellMO;

[0244] 1> If the reportConfig associated with the measId that triggered the measurement report includes reportQuantityRS-Indexes and maxNrofRS-IndexesToReport:

[0245] 2> For each serving cell configured with servingCellMO, beam measurement information is included according to the associated reportConfig;

[0246] 1> If the reportConfig associated with the measId that triggered the measurement report includes reportAddNeighMeas:

[0247] 2> For each measObjectId referenced in the measIdList that also utilizes servingCellMO, except for the measObjectId corresponding to the measId that triggered the measurement report:

[0248] 3> If the measObjectNR indicated by servingCellMO includes an RS resource configuration corresponding to the rsType indicated in reportConfig:

[0249] 4> If the RSRP measurement result is available for the cell corresponding to the measObjectNR, then set the measResultBestNeighCell in measResultServingMOList to include the physCellId and available measurement value based on the reportQuantityCell and rsType indicated in the reportConfig of the non-serving cell with the highest measured RSRP (or the highest measured RSRQ if the RSRQ measurement result is available for the cell corresponding to the measObjectNR, or the highest measured SINR otherwise).

[0250] 4> If the reportConfig associated with the measId that triggered the measurement report includes reportQuantityRS-Indexes and maxNrofRS-IndexesToReport:

[0251] 5> For each best non-serving cell included in the measurement report:

[0252] 6> Includes beam measurement information based on the associated reportConfig;

[0253] The technical features related to conditional reconfiguration are described below. See section 5.5.13 of 3GPP TS38.331v17.2.0 for details.

[0254] In conditional reconfiguration, the network configures one or more candidate target SpCells for the UE. The UE evaluates the status of each configured candidate target SpCell. The UE applies the conditional reconfiguration associated with one of the target SpCells that meets the associated execution conditions. The network provides the configuration parameters of the target SpCell in the ConditionalReconfiguration IE.

[0255] In NR-DC, the UE can receive two independent Conditional Reconfigurations:

[0256] - The conditional reconfiguration associated with the MCG, which is included in the RRC reconfiguration message received via SRB1; and

[0257] - A conditional reconfiguration associated with SCG, which is included in an RRC reconfiguration message received via SRB3, or alternatively, in an RRC reconfiguration message embedded in an RRC reconfiguration message received via SRB1.

[0258] in this case:

[0259] - The UE maintains two independent VarConditionalReconfig, one associated with each conditionalReconfiguration;

[0260] - Unless otherwise explicitly stated, the UE independently executes all procedures for each conditionalReconfiguration and associated VarConditionalReconfig;

[0261] - The UE performs the VarConditionalReconfig procedure associated with the same cell group as measConfig.

[0262] Based on the received ConditionalReconfiguration IE, the UE performs the following actions:

[0263] 1> If ConditionalReconfiguration contains condReconfigToRemoveList:

[0264] 2> Execute the condition reconfiguration removal process;

[0265] 1> If ConditionalReconfiguration contains condReconfigToAddModList:

[0266] 2> Add / modify execution conditions;

[0267] Condition reconfiguration assessment

[0268] UE should:

[0269] 1> For each condReconfigId within VarConditionalReconfig:

[0270] 2> If the RRCReconfiguration within condRRCReconfig includes masterCellGroup, and it includes reconfigurationWithSync:

[0271] 3> Cells with physical cell identifiers that match the values ​​indicated in ServingCellConfigCommon included in reconfigurationWithSync within the masterCellGroup in the received condRRCReconfig are considered applicable cells;

[0272] 2> Otherwise, if the RRCReconfiguration within condRRCReconfig includes a secondaryCellGroup, which includes reconfigurationWithSync:

[0273] 3> Cells with physical cell identifiers that match the values ​​indicated in ServingCellConfigCommon included in reconfigurationWithSync within the secondaryCellGroup in the received condRRCReconfig are considered applicable cells;

[0274] 2> If condExecutionCondSCG is configured:

[0275] 3> In the remainder of the process, each measId indicated in condExecutionCondSCG is treated as a measId in VarMeasConfig associated with SCG measConfig;

[0276] 2> If condExecutionCond is configured:

[0277] 3> If configured via SRB3 or via SRB1 within nr-SCG or nr-SecondaryCellGroupConfig:

[0278] 4> In the remainder of the process, each measId indicated in condExecutionCond is treated as a measId in VarMeasConfig associated with SCGmeasConfig;

[0279] 3> Otherwise:

[0280] 4> In the remainder of the process, each measId indicated in condExecutionCond is treated as a measId in VarMeasConfig associated with MCGmeasConfig;

[0281] 2> For each measId included in the measIdList within the VarMeasConfig indicated in the condExecutionCond or condExecutionCondSCG associated with condReconfigId:

[0282] 3> If condEventId is associated with condEventT1, and if the entry conditions applicable to the event associated with condReconfigId (i.e., the event corresponding to the condEventId of the corresponding condTriggerConfig within VarConditionalReconfig) are satisfied for the applicable cell; or

[0283] 3> If condEventId is associated with condEventD1, and if the entry condition applicable to the event associated with condReconfigId (i.e., the event corresponding to condEventId of the corresponding condTriggerConfig within VarConditionalReconfig) is satisfied for the applicable cell during the corresponding timeToTrigger period defined for that event within VarConditionalReconfig; or

[0284] 3> If condEventId is associated with condEventA3, condEventA4, or condEventA5, and if the entry conditions applicable to the event associated with condReconfigId (i.e., the event corresponding to the condEventId of the corresponding condTriggerConfig within VarConditionalReconfig) satisfy for all measurements after the Layer 3 filtering performed during the corresponding timeToTrigger period defined for that event within VarConditionalReconfig for the applicable cell:

[0285] 4> It is assumed that the event associated with this measId is satisfied;

[0286] 3> If the measId of the event associated with condReconfigId has been modified; or

[0287] 3> If condEventId is associated with condEventT1, and if the departure conditions applicable to the event associated with condReconfigId (i.e., the event corresponding to the condEventId of the corresponding condTriggerConfig within VarConditionalReconfig) are satisfied for the applicable cell; or

[0288] 3> If condEventId is associated with condEventD1, and if the departure condition applicable to the event associated with condReconfigId (i.e., the event corresponding to condEventId of the corresponding condTriggerConfig within VarConditionalReconfig) is satisfied for the applicable cell during the corresponding timeToTrigger period defined for that event within VarConditionalReconfig; or

[0289] 3> If condEventId is associated with condEventA3, condEventA4, or condEventA5, and if the departure condition applicable to the event associated with condReconfigId (i.e., the event corresponding to condEventId of the corresponding condTriggerConfig within VarConditionalReconfig) satisfies for all measurements following the Layer 3 filtering performed during the corresponding timeToTrigger period defined for that event within VarConditionalReconfig for the applicable cell:

[0290] 4> It is believed that the event associated with this measId has not been satisfied;

[0291] 2> If the events associated with all measIds in the stored condTriggerConfig for the target candidate cell are satisfied:

[0292] 3> The target candidate cell in the stored condRRCReconfig associated with this condReconfigId is regarded as the triggering cell;

[0293] 3> Initiate execution by reconfiguring the conditions;

[0294] A maximum of two MeasIds can be configured for each condReconfigId. The conditional reconfiguration events of the two MeasIds can have the same or different event conditions, trigger amounts, trigger times, and trigger thresholds.

[0295] Conditional reconfiguration assessment of SN-initiated inter-SN CPC for EN-DC

[0296] UE should:

[0297] 1> For each condReconfigurationId in VarConditionalReconfiguration:

[0298] 2> For each measId included in the measIdList within the CondReconfigExecCondSCG indicated in the triggerConditionSN associated with condReconfigurationId:

[0299] 3> If the entry conditions applicable to the event associated with this measId satisfy all measurements following the Layer 3 filtering performed during the corresponding timeToTrigger period defined for the event associated with this measId for the applicable cell:

[0300] 4> The event is considered to be satisfied;

[0301] 3> If the measId for this event has been modified; or

[0302] 3> If the leave condition applicable to the event associated with that measId satisfies all measurements performed after the Layer 3 filtering during the corresponding timeToTrigger period defined for the event associated with that measId for the applicable cell:

[0303] 4> It is believed that the event associated with this measId has not been satisfied;

[0304] 2> If the triggering conditions for all events associated with the measId indicated in CondReconfigExecCondSCG contained in triggerConditionSN are met:

[0305] 3> The target cell candidate contained in the RRCReconfiguration message within the nr-SecondaryCellGroupConfig of the RRCConnectionReconfiguration message associated with the stored condReconfigurationToApply is regarded as the triggering cell;

[0306] 3> Initiate execution by reconfiguring the conditions;

[0307] Conditional reconfiguration execution

[0308] UE should:

[0309] 1> If there is more than one triggering cell:

[0310] 2> Select one of the triggering cells as the selected cell for conditional reconfiguration execution;

[0311] 1> Otherwise:

[0312] 2> Treat the triggering cell as a selected cell for conditional reconfiguration execution;

[0313] 1> For the selected cell where conditional reconfiguration is performed:

[0314] 2> Apply the stored condRRCReconfig of the selected cell and execute the action;

[0315] If multiple NR cells are triggered during conditional reconfiguration, the selection of which one to use depends on the UE implementation. For example, the UE may consider beam and beam quality to select one of the triggering cells for execution.

[0316] Meanwhile, if the UE believes that the CPA / CPC configuration is valid even after the SN changes, the UE will refer to the measurement configuration configured by the new SN to find the execution conditions indicated by the measurement ID in the CPA / CPC configuration configured by the previous SN.

[0317] However, the target SN does not know which measurement ID is used in the area-specific CPA / CPC configured by the source SN, so it can use the measurement ID for other purposes, such as for event A3 reporting configured in the area-specific CPA / CPC.

[0318] Figure 11 An example of a conditional mobility configuration configured by the source SCG is shown.

[0319] For example, such as Figure 11 As shown, the source SN uses Measurement ID#1 to configure a region-specific CPA or CPC. In the measurement configuration configured by the source SN, Measurement ID#1 is associated with Reporting Configuration A, which includes the CPA or CPC execution conditions. After the SN is changed to the target SN, the UE assumes the execution conditions for the region-specific CPA or CPC are in Reporting Configuration B. If the target SN uses Measurement ID#1 for event A3, the UE cannot apply the CPA / CPC configuration to the target SN after the SN change.

[0320] Therefore, it is necessary to study the conditional mobility configuration in wireless communication systems.

[0321] In the following description, a method for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0322] The following figures were created to illustrate specific embodiments of this disclosure. The names of specific devices or signals / messages / fields shown in the figures are provided by way of example, and therefore the technical features of this 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).

[0323] Figure 12 Examples of methods for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure are shown.

[0324] Specifically, Figure 12 An example of a method performed by the master node (MN) in a wireless communication system is shown.

[0325] In step S1201, the master node can receive from the source slave node (SN) a first measurement configuration including a first measurement identifier (ID) related to the conditional mobility for the first target SN.

[0326] For example, conditional mobility can be mobility to a target cell of a first target SN performed by a wireless device based on the satisfaction of execution conditions associated with a first measurement ID.

[0327] For example, conditional mobility can include conditional PSCell addition (CPA) and / or conditional PSCell change.

[0328] In step S1202, the master node may send a notification to the second target SN about the first measurement ID and information related to the conditional mobility for the first target SN.

[0329] For example, the first measurement configuration may include a reporting configuration and a measurement object associated with a first measurement ID. The measurement object may include a target cell of a first target SN. The reporting configuration may include execution conditions for conditional mobility to the target cell of the first target SN.

[0330] In step S1203, the master node can receive a second measurement configuration from the second target SN, wherein the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN.

[0331] For example, the second measurement configuration may include a reporting configuration and a measurement object associated with the first measurement ID. The measurement object may include a target cell of the first target SN. The reporting configuration may include execution conditions for conditional mobility to the target cell of the first target SN.

[0332] For example, a first measurement configuration may include a first execution condition associated with a first measurement ID. A second measurement configuration may include a second execution condition associated with the first measurement ID.

[0333] For example, the first execution condition included in the first measurement configuration may be the same as the second execution condition included in the second measurement configuration.

[0334] As another example, the first execution condition included in the first measurement configuration may be different from the second execution condition included in the second measurement configuration.

[0335] In step S1204, the master node may send a conditional mobility configuration, including a first measurement configuration and a second measurement configuration, to the wireless device.

[0336] For example, conditional mobility configurations can be included in RRC reconfigurations. A conditional mobility configuration can be VarConditionalReconfig.

[0337] For example, conditional mobility configuration can be effective for both the source SN and the second target SN.

[0338] For example, a radio device can apply conditional mobility configuration when it is in the source cell of a source SN. A radio device can apply conditional mobility configuration when it is in the second target cell of a second target SN.

[0339] In other words, when in the source cell of the source SN, the radio device can apply the first measurement ID for conditional mobility to the first target cell of the first target SN. After moving to the second target cell of the second target SN, the radio device can still apply the first measurement ID for conditional mobility to the first target cell of the first target SN.

[0340] In other words, even if the wireless device moves from the first target cell to the second target cell, the wireless device can use only the first measurement ID for the conditional mobility of the first target SN.

[0341] According to some embodiments of this disclosure, when a wireless device is in a source cell of a source SN, the wireless device can use a first measurement configuration. The first measurement configuration may include a reporting configuration associated with a first measurement ID and a measurement object. The measurement object may include a first target cell of a first target SN. The reporting configuration may include a first execution condition or a first reporting condition. When the first execution condition is met, the wireless device can perform conditional mobility to the first target cell of the first target SN.

[0342] In this scenario, the wireless device moves from the source cell of the source SN to the second target cell of the second target SN. For example, the wireless device may perform a PSCell change from the source cell to the second target cell or perform a PSCell addition using the second target cell. Then, when the wireless device is in the second target cell of the second target SN, it can apply a second measurement configuration. The second measurement configuration may differ from the first measurement configuration. However, in the second measurement configuration, the first measurement ID is used for conditional mobility to the first target cell of the first target SN. That is, in the second measurement configuration, the measurement object associated with the first measurement ID includes the first target cell of the first target SN. The reporting conditions (or execution conditions) associated with the first measurement ID are only used for conditional mobility to the first target cell of the first target SN.

[0343] According to some embodiments of this disclosure, the wireless device can communicate with at least one of a user device, a network, or an autonomous vehicle, other than the wireless device itself.

[0344] The following section describes the technical features related to Region-Specific Condition PSCell Addition / Change (CPAC).

[0345] When a UE moves from the coverage area of ​​one cell to another, a serving cell change needs to be performed at some point. Currently, serving cell changes are triggered by L3 measurements, and changes for PCell and PSCell are accomplished via synchronized reconfiguration triggered by RRC signaling, and release-addition for SCells where applicable. All cases involve a complete L2 (and L1) reset, resulting in longer latency, greater overhead, and longer downtime compared to beam-switching mobility. The goal of LA / L2 mobility enhancement is to achieve serving cell changes via L1 / L2 signaling to reduce latency, overhead, and downtime.

[0346] In Rel-17 Conditional PSCell Change (CPC) / Conditional PSCell Addition (CPA), a UE configured with CPC / CPA must release the CPC / CPA configuration upon completing random access to the target PSCell. Therefore, without prior CPC / CPA reconfiguration and reinitialization from the network, the UE has no opportunity to perform subsequent CPC / CPA. This increases cell change latency and signaling overhead, especially with frequent SCG changes during FR2 operation. Therefore, MR-DC with cell group selective activation is designed to enable subsequent CPC / CPA after an SCG change without requiring reconfiguration and reinitialization of CPC / CPA preparation from the network. This results in reduced signaling overhead and downtime for SCG changes.

[0347] Currently, CHO and MR-DC cannot be configured simultaneously. This limits the usefulness of both functions when MR-DC is configured. If this was not implemented in Release 17, Release 18 should specify a mechanism for configuring CHO and MR-DC simultaneously. However, this alone may not be sufficient to optimize MR-DC mobility because the radio link quality of the conditionally configured PSCell may be insufficient or not the optimal candidate PSCell when the UE accesses the target PCell, which could impact UE throughput. To mitigate this throughput impact, Rel-18 CHO+MRDC could consider including multiple candidate SCGs and a target MCG for CPC / CPA in the CHO configuration.

[0348] In addition, the detailed objectives related to the work project (WI) (i.e., the region-specific CPAC) are as follows:

[0349] 1. Specify the mechanisms and procedures for L1 / L2-based inter-cell mobility for mobility latency reduction:

[0350] - Configuration and maintenance of multiple candidate cells to allow for rapid application of configurations for candidate cells [RAN2, RAN3]

[0351] - Dynamic handover mechanism between candidate serving cells (including SpCell and SCell) for potential application scenarios based on L1 / L2 signaling [RAN2, RAN1]

[0352] - L1 enhancements for inter-cell beam management, including L1 measurement and reporting, and beam indication [RAN1, RAN2]

[0353] Early RAN2 involvement is necessary, including further clarifying the potential interactions between this project and previous projects.

[0354] - Scheduled advance management [RAN1, RAN2]

[0355] - If needed, support L1 / L2 mobility CU-DU interface signaling [RAN3]

[0356] FR2-specific enhancements (if any) cannot be ruled out.

[0357] The L1 / L2-based inter-cell mobility process is applicable to the following scenarios:

[0358] >>Standalone, CA, and NR-DC scenarios with changes to the serving cell within a CG

[0359] >>Intra-DU and intra-CU DU configurations (applicable to standalone networks and CA: no new RAN interfaces expected)

[0360] >>Intra-frequency and inter-frequency

[0361] >>FR1 and FR2

[0362] >>The source and target cells can be synchronous or asynchronous. 2. Mechanisms and procedures for specifying selective activation of NR-DC with cell groups (at least for SCG) via L3 enhancement:

[0363] - Allows subsequent cell group changes after CG modification without reconfiguration and re-initiation of CPC / CPA [RAN2, RAN3, RAN4]

[0364] A coordinated RRC modeling approach for objectives 1 and 2 could be considered to minimize the workload in RAN2.

[0365] 3. For CHO[RAN3] which includes both the target MCG and the target SCG in NR-DC:

[0366] -Specify data forwarding optimization; and

[0367] - If necessary, specify a solution to avoid unnecessary signaling exchange between the source MN and the target SN.

[0368] 4. In NR-DC, specify the CHO [RAN3, RAN2] for CPC / CPA, including the target MCG and candidate SCG.

[0369] -CHO, including target MCG and target SCG, is used as a baseline.

[0370] 5. Specify the core RRM requirements [RAN4] for the following as needed:

[0371] -Inter-cell mobility based on L1 / L2

[0372] This WI solves the problem of enhanced CHO configuration.

[0373] 6. Specify RF requirements as needed to cover inter-frequency L1 / L2 mobility [RAN4].

[0374] 7. Study and specify how to reuse IDLE / INACTIVE mode measurements to be reported during and / or after RRC connection establishment / recovery in order to improve SCell / SCG establishment latency [RAN4, RAN2], including:

[0375] - The availability and validation of IDLE / INACTIVE mode measurement results to be reported [RAN4]; and

[0376] - Definitions of the corresponding RRM requirements [RAN4]; and

[0377] - If necessary, based on the RAN4 results, define the corresponding signaling support [RAN2].

[0378] RAN4 will coordinate with RAN2 to begin operations when the time is right.

[0379] R4-2220415 serves as the baseline for future work on RAN4.

[0380] Beyond the scenarios mentioned above, enhancements to IDLE / INACTIVE mode measurements and UE behavior in IDLE / INACTIVE mode are not included.

[0381] The following describes the technical features related to the measurement configuration processing of mobility under specific regional conditions.

[0382] After receiving a response from the candidate SN to a request for adding / changing a region-specific condition PSCell (i.e., CPA / CPC), which includes a PSCell ID prepared for the region-specific CAP / CPC, the MN notifies the candidate SN of the measurement configuration information associated with the candidate PSCell accepted by the candidate SN.

[0383] Measurement configuration information includes the measurement ID for region-specific CPA / CPC configuration, the measurement object configuration associated with the measurement ID for region-specific CPA / CPC configuration, and / or the report configuration information associated with the measurement ID for region-specific CPA / CPC configuration.

[0384] When the UE's PSCell is within a valid area, the UE considers the area-specific CPA / CPC configuration (i.e., subsequent CPA / CPC) to be valid. The valid area for the area-specific CPA / CPC configuration can be configured by the network as a list of cell IDs.

[0385] Even after the PSCell is changed, the UE considers the region-specific CPA / CPC configuration to be valid until the configuration is released by the network.

[0386] The MN, through the SN addition process, requests each candidate SN to allocate resources for the UE, indicating that the request is for a region-specific CPA / CPC. The MN also provides the candidate SN with the execution conditions configured by the source SN. If execution conditions are provided, the candidate SN can consider the request to be for a region-specific CPA / CPC. If execution conditions are not provided, the candidate SN can consider the request to be for a (non-region-specific) CPA / CPC. Alternatively, the MN can explicitly indicate that the request is for a region-specific CPA / CPC.

[0387] After receiving a response to a region-specific CPA / CPC request from a candidate SN (which includes a PSCell ID prepared for the region-specific CPA / CPC), the MN can, for example, indicate to the source SN the candidate PSCells accepted by each candidate SN via an SN modification request message. After receiving a list of candidate PSCells accepted by the candidate SNs from the MN, the source SN can use the candidate PSCells accepted by the candidate SNs to update the region-specific CPA / CPC configuration and can provide it to the MN.

[0388] The source SN can, for example, explicitly indicate to the MN the measurement ID and / or measurement object configuration for the region-specific CPA / CPC configuration via an SN modification request confirmation message.

[0389] Figure 13 An example of a method for processing measurement configurations for region-specific conditional mobility is shown.

[0390] In step S1301, the source SN initiates a conditional SN change procedure by sending an SN change request message containing a CPC initiation indication. If the source SN initiates a conditional SN change procedure for a region-specific CPA / CPC, the message includes a region-specific CPA / CPC initiation indication. The message also includes candidate node IDs and may include SCG configurations (to support delta configuration), and may include measurement results for cells that are not CPC candidates. The message also includes a list of proposed PSCell candidates recommended by the source SN, including execution conditions, an upper limit on the number of PSCells that each candidate SN can prepare, and may also include SCG measurement configurations for the CPC (e.g., measurement IDs to be used for the CPC).

[0391] In steps S1302 and S1303, the MN requests each candidate SN to allocate resources for the UE by means of the SN addition process, indicating that the request is for CPAC, and instructing the candidate SN that the measurement results received from the source SN may include cells that are not CPC candidates, and instructing the candidate SN to indicate the list of proposed PSCell candidates received from the source SN, but excluding the execution conditions.

[0392] When the request is for a region-specific CPA / CPC, the MN also provides the candidate SN with enforcement conditions. If enforcement conditions are included, the candidate SN considers the request to be for a region-specific CPA / CPC. If not, the candidate SN considers the request to be for a non-region-specific CPA / CPC. Alternatively, the MN may explicitly indicate that the request is for a region-specific CPA / CPC.

[0393] Within the list of PSCells suggested by the source SN, the candidate SN determines the list of PSCells to prepare (considering the maximum number indicated by the MN), and for each prepared PSCell, the candidate SN determines the SCG SCell and provides the MN with the new corresponding SCG radio resource configuration in an NR RRCReconfiguration** message included in the SgNB Add Request Confirmation message. If data forwarding is required, the candidate SN provides the MN with the data forwarding address. The candidate SN includes a list of prepared PSCell IDs to the MN and an indication of full or incremental RRC configuration. The candidate SN can accept or reject each of the candidate cells suggested by the source SN; that is, it cannot configure any alternative candidates.

[0394] In steps S1304 and S1305, the MN may indicate to the source SN via an SN modification request message the candidate PSCells accepted by each candidate SN before configuring the UE, for example, when a candidate SN does not accept all candidate PSCells. If the MN does not send such an indication, steps 4 and 5 are skipped. If requested, the source SN sends an SN modification request confirmation message and, if necessary, provides the MN with updated measurement configurations and / or execution conditions.

[0395] The source SN provides the MN with the region-specific CPA / CPC configuration. The source SN then notifies the MN of the measurement ID used for the region-specific CPA / CPC configuration.

[0396] In step S1306, for example when the candidate SN has not accepted all candidate PSCells, the MN may indicate to the target SN the measurement ID to be used for the region-specific CPA / CPC. The MN may also indicate to the target SN the measurement object configuration and / or report configuration associated with the measurement ID to be used for the region-specific CPA / CPC.

[0397] In step S1307, if necessary, the source SN provides the MN with updated measurement configuration and / or execution conditions.

[0398] In step S1308, the MN sends an RRCReconfiguration message to the UE that includes CPC configuration, i.e., an RRCReconfiguration* message and a list of associated execution conditions. Each RRCReconfiguration* message contains the SCG configuration and possible MCG configuration from the RRCReconfiguration** message received from the candidate SN in step 3. Furthermore, the RRCReconfiguration message may also include updated MCG configuration and an NRRRCReconfiguration*** message generated by the source SN, for example, to configure the required condition measurements.

[0399] The following describes an example of measurement configuration processing for region-specific conditional mobility.

[0400] For example, the source SN selects cells a, b, and c as PSCell candidates for a region-specific CPC and provides the MN with a list of suggested PSCell candidates. Cells a, b, and c belong to SN A, SN B, and SN C, respectively.

[0401] The MN requests each candidate SN (= SN A, SN B, and SN C) to allocate resources for the UE through the SN addition process, indicating that the request is for a region-specific CPC and indicating a list of proposed PSCell candidates received from the source SN, including the execution conditions configured by the source SN.

[0402] Candidate SN A and SN B accept cells a and b as candidates for area-specific CPCs, but candidate SN C decides not to prepare cell C for an area-specific CPC. The candidate SN indicates to the MN the list of prepared PSCell IDs (= cells a and cells b).

[0403] MN indicates to the source SN the candidate PSCell accepted by each candidate SN (= cell a and cell b).

[0404] The source SN provides the MN with area-specific CPC configurations for cell a and cell b. For the area-specific CPC configuration of cell a, measurement ID #1 is used, and for the area-specific CPC configuration of cell b, measurement ID #2 is used.

[0405] MN notifies candidate SN A and SN B that measurement ID #1 is used for the area-specific CPC of cell a, and measurement ID #2 is used for the area-specific CPC of cell b. Ideally, MN only notifies candidate SN A of measurement ID #2 and the corresponding target cell (i.e., cell b), because when cell a is a PSCell, CPC to cell a is not supported, and this means that SN A can use measurement ID #1 for other purposes, such as for event A3.

[0406] Candidate SN A associates measurement ID#2 with the execution conditions of the area-specific CPC in cell B. Candidate SN A may associate measurement ID#2 with the execution conditions configured by the source SN or with new execution conditions configured by SN A. Candidate SN B associates measurement ID#1 with the execution conditions for the area-specific CPC in cell A.

[0407] Figure 14 Examples of methods for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure are shown.

[0408] Specifically, Figure 14 An example of a method performed by a wireless device in a wireless communication system is shown.

[0409] In step S1401, the wireless device may receive a conditional mobility configuration from a source auxiliary node (SN), the conditional mobility configuration including a first measurement configuration for a first target SN and a second measurement configuration for a second target SN.

[0410] The first measurement configuration may include a first measurement identifier (ID) related to conditional mobility to a first target cell of a first target SN. The second measurement configuration may include a first measurement ID related to conditional mobility to a first target cell of a first target SN.

[0411] For example, conditional mobility configuration can be included in RRC reconfiguration. Conditional mobility configuration can be VarConditionalReconfig.

[0412] For example, RRC reconfiguration may include the SCG's spCellConfig and CPA, CPC, or subsequent CPAC. If reconfigurationWithSync is included in the SCG's spCellConfig and CPA, CPC, or subsequent CPAC is configured, the wireless device may remove all entries in the condReconfigList within the MCG and SCG VarConditionalReconfig, except for entries containing subsequentCondReconfig (if any).

[0413] In step S1402, the wireless device may skip removing the conditional mobility configuration based on the mobility of the second target cell to the second target SN.

[0414] In step S1403, the wireless device may apply the second measurement configuration when it is in the second target cell of the second target SN.

[0415] The wireless device can perform conditional mobility to the first target cell of the first target SN based on the second measurement configuration.

[0416] For example, the second measurement configuration may include execution conditions related to the first measurement ID. Based on satisfying the execution conditions related to the first measurement ID, the wireless device can perform conditional mobility to the first target cell of the first target SN.

[0417] According to some embodiments of this disclosure, the wireless device communicates with at least one of a user device, a network, or an autonomous vehicle, other than the wireless device itself.

[0418] Figure 12 , Figure 13 and Figure 14 Some of the detailed steps shown in the examples may not be necessary and can be omitted. Besides... Figure 12 , Figure 13 and Figure 14 In addition to the steps shown, other steps can be added, and the order of the steps can be changed. Some of the steps above may have their own technical implications.

[0419] In the following sections, an apparatus for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure will be described. Here, the apparatus may be... Figure 2 , Figure 3 and Figure 5 Wireless devices (100 or 200) in the middle.

[0420] For example, a wireless device can perform the above method. Detailed descriptions that overlap with the above content may be simplified or omitted.

[0421] refer to Figure 5 The wireless device 100 may include a processor 102, a memory 104, and a transceiver 106.

[0422] According to some embodiments of this disclosure, processor 102 may be configured to be operatively coupled to memory 104 and transceiver 106.

[0423] Processor 102 may be adapted to receive conditional mobility configuration from a source secondary node (SN), the conditional mobility configuration including a first measurement configuration for a first target SN and a second measurement configuration for a second target SN. The first measurement configuration may include a first measurement identifier (ID) related to conditional mobility to a first target cell of the first target SN. The second measurement configuration may include a first measurement ID related to conditional mobility to the first target cell of the first target SN. Processor 102 may be adapted to skip removing the conditional mobility configuration based on performing mobility to a second target cell of the second target SN. Processor 102 may be adapted to apply the second measurement configuration when in the second target cell of the second target SN.

[0424] For example, processor 102 may be adapted to perform conditional mobility to a first target cell of a first target SN based on a second measurement configuration.

[0425] For example, the second measurement configuration may include execution conditions related to the first measurement ID.

[0426] For example, based on the execution conditions related to the first measurement ID, the processor 102 may be adapted to execute conditional mobility of the first target cell to the first target SN.

[0427] For example, processor 102 may be adapted to communicate with at least one of a user device, a network, or an autonomous vehicle other than a wireless device.

[0428] In the following, a processor for a wireless device for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure will be described.

[0429] The processor may be adapted to control a radio device to receive a conditional mobility configuration from a source secondary node (SN), the conditional mobility configuration including a first measurement configuration for a first target SN and a second measurement configuration for a second target SN. The first measurement configuration may include a first measurement identifier (ID) related to conditional mobility to a first target cell of the first target SN. The second measurement configuration may include a first measurement ID related to conditional mobility to the first target cell of the first target SN. The processor may be adapted to control the radio device to skip removing the conditional mobility configuration based on performing mobility to a second target cell of the second target SN. The processor may be adapted to control the radio device to apply the second measurement configuration when it is in the second target cell of the second target SN.

[0430] For example, the processor may be adapted to control the conditional mobility of the wireless device to a first target cell of the first target SN based on a second measurement configuration.

[0431] For example, the second measurement configuration may include execution conditions related to the first measurement ID.

[0432] For example, based on the execution conditions related to the first measurement ID, the processor 102 may be adapted to execute conditional mobility of the first target cell to the first target SN.

[0433] For example, the processor may be adapted to control communication between the wireless device and at least one of the following: user equipment, network, or autonomous vehicle, other than the wireless device.

[0434] For example, the processor may be adapted to control communication between the wireless device and at least one of the following: user equipment, network, or autonomous vehicle, other than the wireless device.

[0435] According to some embodiments of this disclosure, a processor for a master node (MN) in a wireless communication system is configured to control the MN to perform operations. The operations include: receiving a first measurement configuration from a source secondary node (SN), the first measurement configuration including a first measurement identifier (ID) related to conditional mobility for a first target SN; sending information to a second target SN notifying that the first measurement ID is related to the conditional mobility for the first target SN; receiving a second measurement configuration from the second target SN, wherein the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN; and sending a conditional mobility configuration including the first measurement configuration and the second measurement configuration to a wireless device.

[0436] In the following, a non-transitory computer-readable medium having stored thereon a plurality of instructions for conditional mobility configuration in a wireless communication system, according to some embodiments of the present disclosure, will be described.

[0437] According to some embodiments of this disclosure, the technical features of this disclosure can be directly implemented in hardware, in software executed by a processor, or a combination of both. For example, a method executed by a wireless device in wireless communication can be implemented in hardware, software, firmware, or any combination thereof. For example, software can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other storage medium.

[0438] Some examples of storage media are coupled to a processor, allowing the processor to read information from the storage media. Alternatively, the storage media can be integrated into the processor. The processor and storage media can reside in an ASIC. In another example, the processor and storage media can reside as discrete components.

[0439] Computer-readable media can include tangible and non-transitory computer-readable storage media.

[0440] 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 above.

[0441] Furthermore, the methods described herein can be implemented at least in part by a computer-readable communication medium that carries or conveys code in the form of instructions or data structures and can be accessed, read, and / or executed by a computer.

[0442] According to some embodiments of this disclosure, a plurality of instructions are stored on a non-transitory computer-readable medium. The stored plurality of instructions can be executed by a processor of a wireless device.

[0443] The stored instructions enable a radio device to receive a conditional mobility configuration from a source secondary node (SN). This conditional mobility configuration includes a first measurement configuration for a first target SN and a second measurement configuration for a second target SN. The first measurement configuration may include a first measurement identifier (ID) related to conditional mobility to a first target cell of the first target SN. The second measurement configuration may include a first measurement ID related to conditional mobility to the first target cell of the first target SN. The stored instructions enable the radio device to skip removing the conditional mobility configuration based on performing mobility to a second target cell of the second target SN. The stored instructions enable the radio device to apply the second measurement configuration when it is in the second target cell of the second target SN.

[0444] For example, the stored instructions can enable the wireless device to perform conditional mobility to the first target cell of the first target SN based on the second measurement configuration.

[0445] For example, the second measurement configuration may include execution conditions related to the first measurement ID.

[0446] For example, based on the execution conditions related to the first measurement ID, the processor 102 may be adapted to execute conditional mobility of the first target cell to the first target SN.

[0447] For example, the stored instructions can enable the wireless device to communicate with at least one of the following: a user device, a network, or an autonomous vehicle, other than the wireless device itself.

[0448] For example, the stored instructions can enable the wireless device to communicate with at least one of the following: a user device, a network, or an autonomous vehicle, other than the wireless device itself.

[0449] According to some embodiments of this disclosure, a plurality of instructions are stored on a non-transitory computer-readable medium, which, when executed by a processor of a master node, cause an MN to perform operations. The operations include: receiving from a source secondary node (SN) a first measurement configuration including a first measurement identifier (ID) relating to conditional mobility for a first target SN; sending to a second target SN information notifying that the first measurement ID relates to the conditional mobility for the first target SN; receiving from the second target SN a second measurement configuration, wherein the first measurement ID in the second measurement configuration relates to the conditional mobility for the first target SN; and sending to a wireless device a conditional mobility configuration including the first measurement configuration and the second measurement configuration.

[0450] In the following, a base station (BS) for conditional mobility configuration in a wireless communication system according to some embodiments of the present disclosure will be described.

[0451] A BS may include a transceiver, a memory, and a processor that is operatively coupled to the transceiver and the memory.

[0452] The BS may include a master node (MN). The BS may control the MN to receive from a source slave node (SN) a first measurement configuration including a first measurement identifier (ID) related to conditional mobility for a first target SN. The BS may control the MN to send information to a second target SN notifying it of the first measurement ID related to conditional mobility for the first target SN. The BS may control the MN to receive a second measurement configuration from the second target SN, wherein the first measurement ID in the second measurement configuration is related to conditional mobility for the first target SN. The BS may control the MN to send a conditional mobility configuration including the first and second measurement configurations to a radio device.

[0453] For example, conditional mobility configuration can be effective for both the source SN and the second target SN.

[0454] For example, conditional mobility can be mobility to a target cell of a first target SN performed by a wireless device based on the fulfillment of execution conditions associated with a first measurement ID.

[0455] For example, a first measurement configuration may include a first execution condition associated with a first measurement ID. A second measurement configuration may include a second execution condition associated with the first measurement ID.

[0456] For example, the first execution condition included in the first measurement configuration may be the same as the second execution condition included in the second measurement configuration. Alternatively, the first execution condition included in the first measurement configuration may be different from the second execution condition included in the second measurement configuration.

[0457] For example, conditional mobility can include conditional PSCell addition (CPA) and / or conditional PSCell change.

[0458] For example, the first measurement configuration may include a reporting configuration and a measurement object associated with a first measurement ID. The measurement object may include a target cell of a first target SN. The reporting configuration may include enforcement conditions for conditional mobility to the target cell of the first target SN.

[0459] For example, the second measurement configuration may include a reporting configuration and a measurement object related to the first measurement ID. The measurement object may include a target cell of the first target SN. The reporting configuration may include enforcement conditions for conditional mobility to the target cell of the first target SN.

[0460] This disclosure can have various beneficial effects.

[0461] According to some embodiments of this disclosure, radio access network (RAN) nodes can efficiently handle conditional mobility configurations.

[0462] For example, the target SN used for a region-specific CPA / CPC is free to use measurement IDs not used for the region-specific CPA / CPC configuration, such as for configuring service or neighboring cell measurements. Measurement IDs from the source SN used for the region-specific CPA / CPC configuration can also be retained in the target SN of the region-specific CPA / CPC.

[0463] For example, the source SN and the target SN can use the same measurement ID for the measurement configuration of conditional mobility.

[0464] According to some embodiments of this disclosure, wireless communication systems can effectively utilize resources configured for conditional mobility.

[0465] The beneficial effects that can be obtained through specific embodiments of this disclosure are not limited to those listed above. For example, there may be various technical effects that can be understood and / or deduced from this disclosure by those skilled in the art. Therefore, the specific effects of this disclosure are not limited to those explicitly described herein, but may include various effects that can be understood or deduced from the technical features of this disclosure.

[0466] The claims in this disclosure can be combined in various ways. For example, the technical features in the method claims of this disclosure can be combined to implement or perform in a device, and the technical features in the device claims can be combined to implement or perform in a method. Furthermore, the technical features in the method claims and device claims can be combined to implement or perform in a device. Other implementations are within the scope of the appended claims.

Claims

1. A method performed by a master node MN in a wireless communication system, the method comprising: Receive a first measurement configuration from the source auxiliary node SN, the first measurement configuration including a first measurement identifier ID related to conditional mobility for the first target SN; Send a notification to the second target SN regarding information related to the conditional mobility for the first target SN from the first measurement ID; Receive a second measurement configuration from the second target SN, wherein the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN; as well as Send a conditional mobility configuration, including the first measurement configuration and the second measurement configuration, to the wireless device.

2. The method according to claim 1, in, The conditional mobility configuration is valid for both the source SN and the second target SN.

3. The method according to claim 1, in, The conditional mobility is the mobility to the target cell of the first target SN that is performed by the wireless device based on the satisfaction of execution conditions related to the first measurement ID.

4. The method according to claim 1, in, The first measurement configuration includes a first execution condition related to the first measurement ID, and The second measurement configuration includes a second execution condition related to the first measurement ID.

5. The method according to claim 4, in, The first execution condition included in the first measurement configuration is the same as the second execution condition included in the second measurement configuration.

6. The method according to claim 4, in, The first execution condition included in the first measurement configuration is different from the second execution condition included in the second measurement configuration.

7. The method according to claim 1, in, The conditional mobility includes conditional PSCell addition of CPA and / or conditional PSCell modification.

8. The method according to claim 1, in, The first measurement configuration includes report configuration and measurement objects related to the first measurement ID. The measurement object includes the target cell of the first target SN, and The report configuration includes the execution conditions for the conditional mobility of the target cell to the first target SN.

9. The method according to claim 1, in, The second measurement configuration includes report configuration and measurement objects related to the first measurement ID. The measurement object includes the target cell of the first target SN, and The report configuration includes the execution conditions for the conditional mobility of the target cell to the first target SN.

10. A method performed by a wireless device in a wireless communication system, the method comprising: Conditional mobility configuration is received from the source secondary node SN, the conditional mobility configuration including a first measurement configuration for a first target SN and a second measurement configuration for a second target SN. Wherein, the first measurement configuration includes a first measurement identifier ID related to the conditional mobility of a first target cell to the first target SN, and The second measurement configuration includes the first measurement ID related to the conditional mobility of the first target cell to the first target SN; Skip the removal of the conditional mobility configuration based on the mobility of the second target cell to the second target SN; and The second measurement configuration is applied when the target cell is in the second target SN.

11. The method according to claim 10, wherein, The method further includes: The conditional mobility of the first target cell to the first target SN is performed based on the second measurement configuration.

12. The method according to claim 10, in, The second measurement configuration includes execution conditions related to the first measurement ID.

13. The method according to claim 12, wherein, The method further includes: Conditional mobility of the first target cell to the first target SN is executed based on the execution conditions related to the first measurement ID.

14. The method according to claim 10, in, The wireless device communicates with at least one of the following: user equipment, network, or autonomous vehicle, other than the wireless device itself.

15. A master node MN in a wireless communication system, the MN comprising: Memory; as well as At least one processor, said at least one processor being operatively coupled to said memory, and adapted to: Receive a first measurement configuration from the source auxiliary node SN, the first measurement configuration including a first measurement identifier ID related to conditional mobility for the first target SN; Send a notification to the second target SN regarding information related to the conditional mobility for the first target SN from the first measurement ID; Receive a second measurement configuration from the second target SN, wherein the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN; and Send a conditional mobility configuration, including the first measurement configuration and the second measurement configuration, to the wireless device.

16. The MN according to claim 15, in, The conditional mobility configuration is valid for both the source SN and the second target SN.

17. The MN according to claim 15, in, The conditional mobility is the mobility to the target cell of the first target SN that is performed by the wireless device based on the satisfaction of execution conditions related to the first measurement ID.

18. The MN according to claim 15, in, The first measurement configuration includes a first execution condition related to the first measurement ID, and The second measurement configuration includes a second execution condition related to the first measurement ID.

19. The MN according to claim 18, in, The first execution condition included in the first measurement configuration is the same as the second execution condition included in the second measurement configuration.

20. The MN according to claim 18, in, The first execution condition included in the first measurement configuration is different from the second execution condition included in the second measurement configuration.

21. The MN according to claim 15, in, The conditional mobility includes conditional PSCell addition of CPA and / or conditional PSCell modification.

22. The MN according to claim 15, in, The first measurement configuration includes report configuration and measurement objects related to the first measurement ID. The measurement object includes the target cell of the first target SN, and The report configuration includes the execution conditions for the conditional mobility of the target cell to the first target SN.

23. The MN according to claim 15, in, The second measurement configuration includes report configuration and measurement objects related to the first measurement ID. The measurement object includes the target cell of the first target SN, and The report configuration includes the execution conditions for the conditional mobility of the target cell to the first target SN.

24. 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: Conditional mobility configuration is received from the source secondary node SN, the conditional mobility configuration including a first measurement configuration for a first target SN and a second measurement configuration for a second target SN. Wherein, the first measurement configuration includes a first measurement identifier ID related to the conditional mobility of a first target cell to the first target SN, and The second measurement configuration includes the first measurement ID related to the conditional mobility of the first target cell to the first target SN; Based on the mobility of the second target cell to the second target SN, skip removing the conditional mobility configuration; and The second measurement configuration is applied when the target cell is in the second target SN.

25. The wireless device according to claim 24, wherein, The at least one processor is also adapted to: The conditional mobility of the first target cell to the first target SN is performed based on the second measurement configuration.

26. The wireless device according to claim 24, in, The second measurement configuration includes execution conditions related to the first measurement ID.

27. The wireless device according to claim 26, wherein, The at least one processor is also adapted to: Conditional mobility of the first target cell to the first target SN is executed based on the execution conditions related to the first measurement ID.

28. The wireless device according to claim 24, in, The at least one processor is also adapted to communicate with at least one of a user device, a network, or an autonomous vehicle other than the wireless device.

29. A processor for a master node MN in a wireless communication system, wherein, The processor is configured to control the MN to perform operations, the operations including: Receive a first measurement configuration from the source auxiliary node SN, the first measurement configuration including a first measurement identifier ID related to conditional mobility for the first target SN; Send a notification to the second target SN regarding information related to the conditional mobility of the first measurement ID for the first target SN; Receive a second measurement configuration from the second target SN, wherein the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN; and Send a conditional mobility configuration, including the first measurement configuration and the second measurement configuration, to the wireless device.

30. A non-transitory computer-readable medium storing a plurality of instructions, which, when executed by a processor of a master node, cause the MN to perform operations, the operations including: Receive a first measurement configuration from the source auxiliary node SN, the first measurement configuration including a first measurement identifier ID related to conditional mobility for the first target SN; Send a notification to the second target SN regarding information related to the conditional mobility for the first target SN from the first measurement ID; Receive a second measurement configuration from the second target SN, wherein the first measurement ID in the second measurement configuration is related to the conditional mobility for the first target SN; as well as Send a conditional mobility configuration, including the first measurement configuration and the second measurement configuration, to the wireless device.

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