Method for querying and reporting UE (User Equipment) capability

Abstract

The invention relates to the technical field of 4G / 5G communication, and provides a UE capability query and report method, which reports the latest capability to a base station in a 4G / 5G network, and the base station updates a database and adjusts a resource allocation strategy according to the latest capability. And after receiving the UE capability change notification, the base station obtains the UE capability again and updates the UE capability to the core network. And the core network records the updated UE capability and sends the updated UE capability to the base station when the UE accesses the network again. The method also comprises real-time capability monitoring, and the specific steps are as follows: the UE periodically detects the capability change, and if the capability change, a signaling containing new capability can be generated and sent to the base station. And the base station updates the UE capability record and sends the new capability to the core network. And after the core network updates the record, when the UE accesses the network again, the core network sends the new capability to the base station. If the UE detects the capability change, change indication information can be generated and sent to the base station, and then the base station inquires the UE capability and updates the UE capability. The call interruption risk is reduced, the capability information is automatically updated, the interruption frequency is reduced, and the user experience is improved.

Description

Technical Field

[0001] The present application belongs to the field of 4G / 5G communication transmission technology, and in particular, to a method for querying and reporting UE capabilities. Background Art

[0002] In wireless communication systems, in order to ensure accurate and efficient communication, the base station needs to fully understand the capabilities of the user equipment (UE). The base station will query the capabilities of the UE, and the UE will feedback its capability information to the base station. After understanding the capabilities of the UE, the base station can make appropriate configuration and scheduling for the UE. If the base station finds that the UE supports a certain feature or function, it can configure these features or functions for the UE; conversely, if the UE does not support a certain feature, the base station will not configure it, otherwise it may cause configuration failure, UE disconnection, and reduced user experience. The 3GPP protocol specifies the mechanism for the base station to obtain UE capabilities: (1) When a UE first accesses the network, if the core network has saved the UE's capability information, the UE's capability information will be passed to the base station when the initial context is established. The base station can obtain the UE capability information saved by the core network, but whether to carry the UE capability information when establishing the initial context is optional.

[0003] (2) For the UE being switched, the switching request received by the target base station will contain the UE's capability information, which provides a reference for the base station switching reconfiguration. After the UE switches to the target base station, step 2) can be performed to obtain more capability information.

[0004] (3) If the UE capability information is not carried during initial access, or the base station obtains the UE capability information from the core network during initial access, or the handover request contains the UE capability information, but the base station needs more UE capability information based on neighboring cell information and its own characteristics, the base station can obtain the capability information by querying the UE. At this time, the UE capability query and reporting process will be executed.

[0005] Generally, these three situations are the main ways for the base station to obtain UE capability information. However, in the actual UE business process, since the UE may change various mobile phone system settings during use, the current capability information of the UE is different from the capability information previously reported to the base station. If the base station configures and processes UE resources based on the previously reported information, and the configuration does not match the actual capabilities, reconfiguration may fail, the UE will be disconnected, and the user experience will be reduced. At this point, even if the subsequent reconstruction process is carried out immediately, the disconnection problem caused by the mismatch between the configuration and the UE capabilities cannot be solved due to the lack of updates in the process. Summary of the invention

[0006] The embodiment of the present application provides a method for querying and reporting UE capabilities, aiming to solve the technical problems raised by the background technology.

[0007] The technical solution adopted by the present invention is: A method for querying and reporting UE capabilities, in which the UE accesses a 4G / 5G network and the UE capabilities are adjusted, comprising the following steps: the UE reports the latest UE capabilities to a base station by means of signaling, the base station promptly updates the user equipment capability database in the base station after receiving the UE capabilities, and adjusts the resource allocation and scheduling strategy for the UE according to the reported capability information, the UE notifies the base station of a capability change message, the base station reacquires the latest UE capabilities to the base station in accordance with a conventional UE capability query and reporting method after receiving the UE capability change notification, the base station promptly updates the UE capabilities after receiving the UE capabilities, when the base station receives the updated UE capabilities, the base station notifies the core network of the updated UE capabilities, the core network records the updated UE capabilities, when the UE re-accesses the network, the updated UE capabilities are sent to the base station, and at the same time, the method also includes real-time capability monitoring of the UE.

[0008] Furthermore, the specific method includes the following steps: S1: UE periodically checks its capabilities to see if the current UE capabilities are consistent with the last UE capabilities reported to the base station. If they are consistent, keep the monitoring state of detection; If they are inconsistent, when the UE capability change is detected, proceed to the next step. S2: When a change in UE capability is detected, the UE generates a signaling containing the UE capability based on the current UE capability, and sends it to the base station through the uplink scheduling of the base station to immediately update the base station. The base station analyzes the change in UE capability based on the received signaling and adjusts the resource allocation strategy to ensure efficient use of network resources and optimal capabilities of the user equipment; S3: After receiving the updated UE capabilities, the base station updates the UE capabilities recorded by the base station. Subsequent reconfiguration messages will refer to the new UE capabilities for configuration. At the same time, the base station will actively initiate a capability query process each time the UE is reconfigured. S4: After the base station updates the UE capabilities, it sends the updated UE capabilities to the core network and promptly notifies the neighboring base stations to maintain the consistency of the global capability information of the network. In addition, in order to further improve efficiency, S5: After receiving the updated UE capabilities, the core network replaces the old UE capabilities with the new ones. S6: When the UE rejoins the network, the core network sends the new UE capabilities to the base station to update the new UE capability information. At the same time, the network side equipment will also detect the real-time capabilities of the UE. Another option includes: S7: When a change in UE capability is detected, the UE generates an indication of the UE capability change and sends it to the base station. After receiving the indication, the base station immediately starts the corresponding processing flow to quickly respond to the change in UE capability, ensuring that the network strategy is synchronized with user needs. S8: After receiving the UE capability change indication, the base station generates a UE capability query message and sends it to the UE. After receiving the capability query message from the base station, the UE quickly responds and reports the latest capability status. Based on this status, the base station optimizes the scheduling of wireless resources to ensure network smoothness. At the same time, the network side continues to monitor the UE capability in real time. S9: The UE generates UE capability information based on the current UE capability and sends it to the base station. The base station analyzes the collected UE capability information to predict future network requirements and dynamically adjust network strategies to ensure that users can enjoy high-quality service experience at any time. In addition, through continuous capability monitoring, potential problems can be discovered and resolved in a timely manner, providing a more stable and reliable network connection for the UE.

[0009] S10: Repeat S3 to S6.

[0010] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: In the service processing flow of the user equipment (UE), once a change in the terminal capability is detected, the terminal will take the initiative to report the change or trigger the base station query mechanism to transmit the capability information to the base station. After receiving the new UE capability information, the base station will update the UE capability data and prepare to send a reconfiguration message that is compatible with the UE capability. This strategy significantly reduces the risk of call interruption caused by the base station's failure to grasp the UE capability information in a timely manner, realizes the automatic update of UE capability information, effectively reduces the frequency of call interruption, improves user experience, and enhances the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 is a flow chart of the method provided in the embodiment of the present application; Figure 2 This is the process provided by the first embodiment of this application Figure 1 ; Figure 3 This is the process provided by the second embodiment of this application Figure 2 ; Figure 4 This is the process provided by the third embodiment of this application Figure 3 ; Figure 5 This is the process provided by the fourth embodiment of this application Figure 4 . DETAILED DESCRIPTION

[0013] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0014] like Figure 1 As shown, the present application provides a method for querying and reporting UE capabilities. When the UE accesses the 4G / 5G network, the UE capabilities are adjusted, including the following steps: the UE can report the latest UE capabilities to the base station by signaling. After receiving the UE capabilities, the base station promptly updates the user equipment capability database in the base station, and adjusts the resource allocation and scheduling strategy for the UE based on the reported capability information. The UE notifies the base station of the capability change message. After the base station receives the UE capability change notification, it can also re-acquire the latest UE capabilities to the base station in accordance with the conventional UE capability query and reporting method. After receiving the UE capabilities, the base station promptly updates the UE capabilities. When the base station receives the updated UE capabilities, it notifies the core network of the updated UE capabilities. The core network records the updated UE capabilities. When the UE re-enters the network, the updated UE capabilities are sent to the base station. At the same time, the method also includes real-time capability monitoring of the UE.

[0015] Furthermore, the specific method includes the following steps: S1: UE periodically checks its capabilities to see if the current UE capabilities are consistent with the last UE capabilities reported to the base station. If they are consistent, keep the monitoring state of detection; If they are inconsistent, when the UE capability changes are detected, proceed to the next step. S2: When a change in UE capability is detected, the UE generates a signaling containing the UE capability based on the current UE capability, and sends it to the base station through the uplink scheduling of the base station to immediately update the base station. The base station analyzes the change in UE capability based on the received signaling and adjusts the resource allocation strategy to ensure efficient use of network resources and optimal capabilities of the user equipment; S3: After receiving the updated UE capabilities, the base station updates the UE capabilities recorded by the base station. Subsequent reconfiguration messages will refer to the new UE capabilities for configuration. S4: After the base station updates the UE capabilities, the base station sends the updated UE capabilities to the core network. S5: After receiving the updated UE capabilities, the core network replaces the old UE capabilities with the new ones. S6: When the UE rejoins the network, the core network sends the new UE capabilities to the base station to update the new UE capability information. At the same time, the network side equipment will also monitor the real-time capabilities of the UE. Another approach includes: S7: When the UE capability change is detected, the UE generates an indication message of the UE capability change and sends it to the base station. After receiving the indication message, the base station immediately starts the corresponding processing flow: quickly respond to the UE capability change to ensure that the network strategy is synchronized with user needs. S8: After receiving the UE capability change indication, the base station generates a UE capability query message and sends it to the UE. After receiving the capability query message from the base station, the UE quickly responds and reports the latest capability status. Based on this status, the base station optimizes the scheduling of wireless resources to ensure network smoothness. At the same time, the network side continues to monitor the UE capability in real time. S9: The UE generates UE capability information based on the current UE capability and sends it to the base station. The base station analyzes the collected UE capability information to predict future network requirements and dynamically adjust network strategies to ensure that users can enjoy high-quality service experience at any time. In addition, through continuous capability monitoring, potential problems can be discovered and resolved in a timely manner, providing a more stable and reliable network connection for the UE.

[0016] S10: Repeat S3 to S6.

[0017] Embodiment 1 like Figure 2 As shown, a method for querying and reporting UE capabilities includes directly generating UE capabilities and sending them to a base station when the UE capabilities of a 5G system change: S1: The UE that has entered the network periodically checks whether the UE capability has changed, and compares it with the UE capability that was last reported to the base station. The period can be set to a certain range such as [1,1000], in seconds. If it is set to 5 seconds, it will check every 5 seconds whether the UE capability has changed compared to the last time it was reported to the base station. S1-1) If the terminal adjusts the automatic 5G to enable 5G, the UE's 4G support will change, triggering the Service Request (SR) and Buffer Status Report (BSR) processes. In S1-1, once the UE's capability changes, such as the adjustment of 4G support, are detected, the UE will immediately report the updated capability information to the base station through the SR and BSR processes. After receiving this information, the base station will quickly adjust the strategy to ensure the optimization of resource allocation, while maintaining the stability of network capabilities, further reducing the user's disconnection rate during service use, and improving the overall network operation efficiency.

[0018] S2: After receiving the SR, the base station performs BSR scheduling and subsequent scheduling. According to the capability information reported by the UE, the base station will start the corresponding resource allocation strategy to ensure that the UE can work in the best state. At the same time, real-time monitoring is carried out on the network side to collect and analyze UE capability data so that the strategy can be dynamically adjusted when necessary to ensure efficient operation of the network and continuous optimization of user experience. On this basis, this method can further reduce network optimization costs, improve the network's ability to adapt to various scenarios, and lay a solid foundation for the popularization and development of 5G networks.

[0019] S3: After receiving the scheduling information, the UE sends the updated UE capability information to the base station. S4: After receiving the UE capability information, the base station updates the UE capability information. The base station will subsequently configure the UE according to the latest UE capability and schedule better network resources. At the same time, in order to cope with the capability differences of different UEs in the same network environment, the base station will also combine the UE historical capability data to dynamically adjust the capability reporting cycle to achieve the best match between network resources and user needs. In addition, by continuously collecting and analyzing the UE capability change trend, the base station can predict the future load status of the network, provide data support for network planning, and further optimize the network layout and improve service quality.

[0020] S5: The base station synchronously sends the UE capability information (UE Capability Information Update) to the core network AMF to ensure the smoothness and efficiency of the entire network architecture.

[0021] S6: After receiving the UE capability update message, the core network AMF updates the locally stored UE capability information and quickly synchronizes this information to other relevant network nodes, such as the slice manager and edge computing platform, to ensure the information consistency of the entire network ecosystem. In this way, it can not only respond to the dynamic needs of the UE in real time, but also optimize specific services, realize on-demand resource allocation, and greatly improve the flexibility and response speed of the network. At the same time, in order to cope with fluctuations in the number of users and changes in network traffic, the base station will intelligently adjust the strategy to ensure the long-term stable operation of the network and help 5G technology to be deeply applied to more fields. The dynamic update and synchronization of capability information provides strong support for the efficient configuration of network resources.

[0022] Step 7: When the UE rejoins the network, the AMF sends the updated UE capabilities to the base station.

[0023] Embodiment 2 like Figure 3 As shown, this embodiment provides a method for querying and reporting UE capabilities, which includes the following steps in a 4G network: when the UE capability changes, the UE generates a UE capability change indication, and sends the UE capability indication to the base station, and the base station then performs the UE capability query and reporting process. After receiving the UE capability change indication, the base station immediately starts a fast response mechanism to ensure that the UE can get the best experience in the new state. At the same time, the base station will also feed back the change information to the core network for subsequent UE capability updates when the UE enters the network.

[0024] The process is similar to that of the first embodiment, except that the network here is a 4G network. The difference is that the base station node of 4G is eNB, and the core network of 4G is MME. Other processes are similar and will not be described in detail.

[0025] Embodiment 3 like Figure 4 As shown, this embodiment also provides a method for querying and reporting UE capabilities, including, in a 5G network, when the UE capability changes, generating a UE capability change indication to a base station, and the base station executing a conventional UE capability query process to execute a subsequent process, S1: The UE that has joined the network periodically checks whether the UE capability has changed, and compares it with the UE capability that was last reported to the base station.

[0026] The time interval of periodic checks can be set flexibly. Specifically, this period can be set within a specific range of values, such as from 1 second to 1000 seconds. This setting allows users to adjust the frequency of checks according to actual needs. For example, if we set the period to 5 seconds, the system will automatically check every 5 seconds whether the capabilities of the user equipment (UE) have changed. This check is compared with the data reported by the UE to the base station last time to ensure that the base station can keep up to date with the latest status of the UE.

[0027] The periodic inspection here sets the dead zone, active zone, and semi-active zone for periodic inspection, so that the user equipment does not need to be processed differently in the dead zone, active zone, and semi-active zone to reduce unnecessary resource consumption. If the capability changes during the inspection in the active zone within a period of time, or there is no change for a certain period of time and the semi-active zone is entered, the inspection frequency is reduced and the energy-saving mode is entered. If the capability change is detected in the dead zone, it is immediately reported to the base station, and the strategy is adjusted as needed to optimize network performance.

[0028] S1-1: If the terminal is adjusted from supporting 2G 3G and 4G 5G to enabling 5G, the UE capability will not support 2G 3G and 4G at this time, and the UE capability change indication (UE capability information Change Indication) will be sent to the base station. After receiving this indication, the base station will quickly start the capability query and update the network configuration according to the query result. The terminal will not be able to perform 5G to different system 2G 3G and 4G interoperability.

[0029] S2: After receiving the UE capability change, the base station inquires about the UE capability (UECapability Enquiry) according to the UE capability query process. The query content includes but is not limited to key parameters such as supported frequency bands, modulation methods, and multi-antenna technologies. After obtaining complete information, the base station will quickly process and adjust the wireless resource allocation strategy to adapt to the dynamic capability changes of the UE, thereby providing users with more stable and efficient services in diversified scenarios. In addition, this mechanism can also effectively promote real-time monitoring of terminal devices on the network side, providing strong support for network maintenance and optimization.

[0030] The remaining steps are the same as S3 to S7 of the first embodiment and are not described in detail here.

[0031] The base station sends a query request to the UE, and the UE responds and provides the latest capability information. The base station dynamically adjusts the network strategy based on this information to ensure that network resources are optimally configured. Through this mechanism, not only the network efficiency is improved, but also the user experience in multiple scenarios is greatly enhanced. In addition, the timely feedback of capability change indications also provides real-time data support for the network optimization center, helping it to further tap the network potential and improve the overall service quality.

[0032] Embodiment 4 like Figure 5 As shown, a method for querying and reporting UE capabilities includes: in a 4G system, when UE capabilities change, generating a UE capability change indication to a base station, and the base station executes a conventional UE capability query process to execute subsequent processes.

[0033] The process is similar to that of Example 3, except that this is a 4G system, the 4G base station node is eNB, the 4G core network is MME, and other processes are similar and will not be repeated.

[0034] In the service processing flow of UE (User Equipment), once a change in terminal capabilities is detected, the terminal will take the initiative to report or trigger the base station query mechanism to transmit the capability information to the base station. Specifically, the terminal will monitor its own capability indicators in real time, such as antenna status, 4G 5G support, etc. Once these capabilities are abnormal, the terminal will immediately start a preset reporting mechanism, actively package these capability data and send them to the base station via wireless signals.

[0035] After receiving the capability information transmitted by the terminal, the base station will conduct detailed analysis and processing. The system will update the UE capability information record based on this data and store it in the base station's database. Subsequently, the base station will prepare to send reconfiguration messages that are appropriate to the UE's capabilities based on the UE's current capability status. These messages may include adjusting wireless resource allocation, modifying transmission parameters, optimizing scheduling strategies, etc., in order to ensure that the UE can still maintain good communication quality under the current capability status.

[0036] This strategy significantly reduces the risk of call interruption caused by the base station's failure to grasp the UE's capability information in a timely manner. In traditional communication systems, the base station may not be able to understand the terminal's capability status in real time, resulting in the inability to make timely adjustments when the terminal's capability decreases, thereby increasing the possibility of call interruption. By implementing active reporting, the system can grasp the changes in the terminal's capability in real time and respond quickly, thereby effectively avoiding the occurrence of call interruption.

[0037] In addition, this strategy also realizes the automatic update of UE capability information. Without the automatic update mechanism, the update of capability information often relies on manual intervention or scheduled tasks, which is inefficient and easy to miss important information. Through the automated update mechanism, the system can continuously and in real time monitor and update the terminal's capability data to ensure the accuracy and timeliness of the data.

[0038] The frequency of call interruptions is effectively reduced, and the user experience is improved. Call interruptions are one of the most annoying issues for users when using communication services. Frequent interruptions not only affect users' normal communication, but also reduce users' trust and satisfaction with communication service providers. By implementing the above strategy, the system can quickly make adjustments when the terminal capacity decreases, minimize the occurrence of call interruptions, and thus improve the user's call experience.

[0039] Ultimately, this strategy enhances the product's market competitiveness. In the fiercely competitive communications market, user experience is one of the key factors that determine the success or failure of a product. By reducing the frequency of call interruptions and improving communication quality, the product can better meet user needs and win the favor of users. This not only helps to improve the loyalty of existing users, but also attracts more new users to choose and use the product, thereby occupying a favorable position in the market.

[0040] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0041] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0042] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0043] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0044] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0045] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0046] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for querying and reporting UE capabilities, wherein the UE accesses a 4G / 5G network and the UE capabilities are adjusted, characterized in that: The UE reports the latest UE capabilities to the base station through signaling, and the base station updates the UE capabilities in a timely manner after receiving them. Update the user equipment capability database in the base station and adjust the resource allocation and scheduling strategy for the UE based on the reported capability information. The UE notifies the base station of the capability change message. After receiving the UE capability change notification, the base station re-acquires the latest UE capability to the base station in accordance with the conventional UE capability query and reporting method. After receiving the UE capability, the base station updates the UE capability in a timely manner. When the base station receives the updated UE capabilities, it notifies the core network of the updated UE capabilities. The core network records the updated UE capabilities. When the UE re-enters the network, the updated UE capabilities are sent to the base station. At the same time, the method also includes real-time capability monitoring of the UE.

2. A method for querying and reporting UE capabilities as claimed in claim 1, characterized in that: The specific steps are as follows: S1: UE periodically checks its capabilities to see if the current UE capabilities are consistent with the last UE capabilities reported to the base station: If they are consistent, keep the monitoring state of detection; If they are inconsistent, when the UE capability change is detected, proceed to the next step. S2: When a change in UE capability is detected, the UE generates a signaling containing the UE capability based on the current UE capability, and sends it to the base station through the uplink scheduling of the base station, and immediately updates the base station. The base station analyzes the change in UE capability based on the received signaling. S3: After receiving the updated UE capabilities, the base station updates the UE capabilities recorded by the base station. Subsequent reconfiguration messages will refer to the new UE capabilities for configuration. S4: After the base station updates the UE capabilities, the base station sends the updated UE capabilities to the core network. S5: After receiving the updated UE capabilities, the core network replaces the old UE capabilities with the new ones. S6: When the UE rejoins the network, the core network sends the new UE capability to the base station to update the new UE capability information. S7: When detecting a change in UE capability, the UE generates UE capability change indication information and sends it to the base station. S8: After receiving the UE capability change indication, the base station generates a UE capability query message and sends it to the UE. S9: The UE generates UE capability information based on the current UE capability and sends it to the base station. S10: Repeat S3 to S6.

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