Processing method, communication device, and storage medium

Abstract

The application provides a processing method, a communication device and a storage medium. The processing method comprises the following steps: in response to at least one condition meeting a requirement, a source primary cell configuration is recovered. Through the technical scheme, the technical mechanism of cell switching can be improved, and the signaling overhead and / or service interruption time can be reduced.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a processing method, communication device and storage medium. Background Technology

[0002] Restoring the source cell configuration is an important fault-tolerance mechanism in wireless communication networks, primarily used to address issues such as handover failures and radio link failures. By quickly restoring to the source cell and reapplying the previous configuration, service interruption time and / or improved reliability of the communication system can be effectively reduced.

[0003] In the process of conceiving and implementing this application, the inventors discovered at least the following problems: the technical mechanism for cell handover in the existing protocol is imperfect. For example, the technical mechanism for determining whether to restore the source cell configuration is imperfect, which may lead to repeated execution of the radio resource control reconstruction process, thereby increasing signaling overhead and / or prolonging the service interruption time. Therefore, it is necessary to improve the technical mechanism for cell handover.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] The main objective of this application is to provide a processing method, communication device, and computer-readable storage medium, which aims to improve the technical mechanism of cell handover and thereby support the reduction of signaling overhead and / or service interruption time.

[0006] This application provides a processing method applicable to terminal devices (such as mobile phones), comprising the following steps:

[0007] S2: In response to at least one condition being met, restore the configuration of the source primary cell.

[0008] Optionally, at least one condition includes at least one of the following:

[0009] First condition: The configuration for triggering mobility switching at layer 1 to layer 2 has been configured;

[0010] Second condition: The previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration;

[0011] The third condition: Layer 1-2 triggering of mobile cell handover includes security update information;

[0012] Fourth condition: The first timer times out.

[0013] Optionally, at least one condition must be met, including at least one of the following:

[0014] The first and second conditions are met;

[0015] The first and third conditions are met;

[0016] The first, second, and third conditions are met;

[0017] The second and third conditions are met;

[0018] The first, second, and fourth conditions are met;

[0019] The first, third, and fourth conditions are met;

[0020] The first, second, third, and fourth conditions are met;

[0021] The second condition is met, as are the third and fourth conditions.

[0022] Optionally, the method further includes at least one of the following:

[0023] The restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer;

[0024] The first timer is the T304 timer that triggers mobile cell handover at the primary cell group level 1-2.

[0025] The first cell is selected or determined based on the first content.

[0026] Optionally, the method further includes at least one of the following:

[0027] The first cell is the cell that performs fast recovery and / or radio resource control reconstruction;

[0028] The first content includes at least one of the following:

[0029] The signage remains unchanged to ensure community safety.

[0030] The safety signage for the previously selected residential area remains unchanged.

[0031] Try configuring a layer-by-layer, two-tier mobility switching mechanism.

[0032] Optionally, selecting or determining the first cell based on the first content includes at least one of the following:

[0033] If the security sign of the serviced community is the same as that of the previously selected community, the previously selected community shall be selected or designated as the first community.

[0034] If the security indicator of the serviced community is different from that of the previously selected community, the community selection process will determine the first community.

[0035] If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, then the previously selected cell shall be selected or determined as the first cell.

[0036] If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, then cell selection is performed to determine the first cell.

[0037] Optionally, the previously selected cell included at least one of the following:

[0038] During the initialization process of radio resource control reconstruction, cell selection is performed to determine the cell.

[0039] Before restoring the configuration of the primary source cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell.

[0040] Before restoring the configuration of the primary cell, select the cell to be selected.

[0041] This application also provides a processing method applicable to network devices (such as base stations), comprising the following steps:

[0042] S1: Send Layer 1-2 trigger mobility handover configuration information so that the terminal device can restore the source primary cell configuration in response to at least one condition being met.

[0043] Optionally, at least one condition includes at least one of the following:

[0044] First condition: The terminal device has been configured to attempt layer 1-2 trigger mobility handover;

[0045] Second condition: The terminal device's previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration;

[0046] The third condition: The terminal device layer 1.2 triggers the mobile cell handover, including security update information;

[0047] Fourth condition: The terminal device's first timer times out.

[0048] Optionally, at least one condition must be met, including at least one of the following:

[0049] The first and second conditions are met;

[0050] The first and third conditions are met;

[0051] The first, second, and third conditions are met;

[0052] The second and third conditions are met;

[0053] The first, second, and fourth conditions are met;

[0054] The first, third, and fourth conditions are met;

[0055] The first, second, third, and fourth conditions are met;

[0056] The second condition is met, as are the third and fourth conditions.

[0057] Optionally, the method further includes at least one of the following:

[0058] The configuration information for triggering mobility handover at layer 1 to layer 2 includes the serving cell security not changing identifier and / or the candidate cell security not changing identifier;

[0059] The restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer;

[0060] The first timer is the T304 timer that triggers mobile cell handover at the primary cell group level 1-2.

[0061] The terminal device selects or determines the first cell based on the first content.

[0062] Optionally, the method further includes at least one of the following:

[0063] When the security identity of the serving cell and the security identity of the candidate cell are the same, the layer-1-2 triggering of mobile cell handover includes security update information;

[0064] The first cell is the cell that performs fast recovery and / or radio resource control reconstruction;

[0065] The first content includes at least one of the following:

[0066] The signage remains unchanged to ensure community safety.

[0067] The safety signage for the previously selected residential area remains unchanged.

[0068] Try configuring a layer-by-layer, two-tier mobility switching mechanism.

[0069] Optionally, the terminal device selects or determines the first cell based on the first content, including at least one of the following:

[0070] If the security identifier of the serving cell is the same as that of the previously selected cell, the terminal device selects or determines the previously selected cell as the first cell.

[0071] If the security identifier of the serving cell is different from that of the previously selected cell, the terminal device performs cell selection to determine the first cell.

[0072] If the configuration for attempting Layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, the terminal device selects or determines the previously selected cell as the first cell.

[0073] If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, the terminal device performs cell selection to determine the first cell.

[0074] Optionally, the previously selected cell included at least one of the following:

[0075] During the initialization process of radio resource control reconstruction, cell selection is performed to determine the cell.

[0076] Before restoring the configuration of the primary source cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell.

[0077] Before restoring the configuration of the primary cell, select the cell to be selected.

[0078] This application also provides a communication device, including: a memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program, when executed by the processor, implements the steps of any of the processing methods described above.

[0079] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as a SOC or a baseband chip with communication functions). The specific meaning needs to be clarified according to the context.

[0080] This application also provides a computer-readable storage medium storing a processing program, which, when executed by a processor, implements the steps of any of the processing methods described above.

[0081] The technical solution of this application restores the configuration of the source primary cell when at least one condition is met. This technical solution improves the cell handover mechanism, thereby reducing signaling overhead and / or service interruption time. Attached Figure Description

[0082] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0083] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application;

[0084] Figure 2 A communication network system architecture diagram provided for an embodiment of this application;

[0085] Figure 3 A schematic diagram of the hardware structure of a controller 140 provided in this application;

[0086] Figure 4 A schematic diagram of the hardware structure of a network node 150 provided in this application;

[0087] Figure 5 This is a flowchart illustrating the processing method according to the first embodiment;

[0088] Figure 6 This is a schematic diagram of the interaction timing according to the second embodiment;

[0089] Figure 7 This is a flowchart illustrating the processing method according to the fifth embodiment;

[0090] Figure 8 This is a flowchart illustrating the processing method according to the sixth embodiment;

[0091] Figure 9 Schematic diagram of the processing apparatus provided in the embodiments of this application Figure 1 ;

[0092] Figure 10 Schematic diagram of the processing apparatus provided in the embodiments of this application Figure 2 ;

[0093] Figure 11 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application.

[0094] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0095] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0096] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element, and / or, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0097] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0098] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0099] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0100] It should be noted that step designations such as S1 and S2 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the protection scope of this application.

[0101] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0102] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0103] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as a SOC or a baseband chip with communication functions). The specific meaning needs to be clarified according to the context.

[0104] Terminal devices can be implemented in various forms. For example, the terminal devices described in this application may include smart terminal devices such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0105] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminal devices.

[0106] Please see Figure 1 This is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that... Figure 1 The mobile terminal structure shown does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0107] The following is combined with Figure 1 A detailed introduction to each component of the mobile terminal:

[0108] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. And / or, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G, and 6G.

[0109] WiFi is a short-range wireless transmission technology. Mobile terminals, through the WiFi module 102, can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 1 WiFi module 102 is shown, but it is understood that it is not a necessary component of a mobile terminal and can be omitted as needed without changing the nature of the invention.

[0110] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0111] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0112] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0113] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0114] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: touch detection device and touch controller. Optionally, touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to touch controller; touch controller receives touch information from touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands from processor 110. And / or, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.

[0115] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 based on the type of touch event. Although in Figure 1 In this embodiment, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0116] Interface unit 108 serves as an interface through which at least one external device can connect to mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.

[0117] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). And / or, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0118] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.

[0119] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0120] although Figure 1 As not shown, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0121] To facilitate understanding of the embodiments of this application, the communication network system on which the mobile terminal of this application is based is described below.

[0122] Please see Figure 2 , Figure 2 This application provides a communication network system architecture diagram. The communication network system is a New Radio (NR) system based on general mobile communication technology. The NR system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and the operator's IP services 204, which are connected in sequence.

[0123] Optionally, UE201 can be the aforementioned terminal device 100, which will not be described in detail here.

[0124] E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Optionally, eNodeB2021 can connect to other eNodeB2022 via backhaul (e.g., X2 interface), and eNodeB2021 connects to EPC203, providing access from UE201 to EPC203.

[0125] EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gateway) 2034, a PGW (Packet Data Network Gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).

[0126] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0127] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.

[0128] Figure 3 This is a schematic diagram of the hardware structure of a controller 140 provided in this application. The controller 140 includes a memory 1401 and a processor 1402. The memory 1401 is used to store program instructions, and the processor 1402 is used to call the program instructions in the memory 1401 to execute the steps performed by the controller in the first embodiment of the above method. The implementation principle and beneficial effects are similar, and will not be described again here.

[0129] Optionally, the controller further includes a communication interface 1403, which can be connected to the processor 1402 via a bus 1404. The processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.

[0130] Figure 4 This application provides a schematic diagram of the hardware structure of a network node 150. The network node 150 includes a memory 1501 and a processor 1502. The memory 1501 is used to store program instructions, and the processor 1502 is used to call the program instructions in the memory 1501 to execute the steps performed by the first node in the first embodiment of the above method. The implementation principle and beneficial effects are similar, and will not be described again here.

[0131] Optionally, the controller further includes a communication interface 1503, which can be connected to the processor 1502 via a bus 1504. The processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network node 150.

[0132] The integrated modules described above, implemented as software functional modules, can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods of the various embodiments of this application.

[0133] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk, SSD), etc.

[0134] Based on the above-described mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0135] Technical terms used in the embodiments of this application:

[0136] MR: Measurement Report;

[0137] Handover Request: A request that allows you to switch over to another device.

[0138] CU: Central Unit;

[0139] LTM: L1 / L2 Triggered Mobility;

[0140] BM: Beam Management;

[0141] LTM Configuration Update: Layer 1-2 mobility configuration update;

[0142] LTM Configuration Update Acknowledge: Confirmation of L1-2 mobility configuration update;

[0143] TCI: Transmission Configuration Indicator;

[0144] MAC: Medium Access Control;

[0145] MAC CE: MAC Control Element, Media Access Control Unit;

[0146] CG: Configured Grant;

[0147] NCC: Next hop Chaining Counter;

[0148] HO: Handover;

[0149] CHO: ConditionalHandOver, conditional switching.

[0150] First Embodiment

[0151] Reference Figure 5 , Figure 5 The flowchart illustrating the processing method according to the first embodiment is shown below. The processing method of this application embodiment can be applied to a terminal device (such as a mobile phone) and includes the following steps:

[0152] S2: In response to at least one condition being met, restore the configuration of the source primary cell.

[0153] Optionally, at least one condition includes at least one of the following:

[0154] First condition: The configuration for triggering mobility switching at layer 1 to layer 2 has been configured;

[0155] Second condition: The previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration;

[0156] The third condition: Layer 1-2 triggering of mobile cell handover includes security update information;

[0157] Fourth condition: The first timer times out.

[0158] Optionally, at least one condition must be met, including at least one of the following:

[0159] The first and second conditions are met;

[0160] The first and third conditions are met;

[0161] The first, second, and third conditions are met;

[0162] The second and third conditions are met;

[0163] The first, second, and fourth conditions are met;

[0164] The first, third, and fourth conditions are met;

[0165] The first, second, third, and fourth conditions are met;

[0166] The second condition is met, as are the third and fourth conditions.

[0167] Optionally, if the configuration for attempting Layer 1-2 mobility handover has been configured, and the previous radio resource control reconstruction was performed on the cell selection before the restoration of the source primary cell configuration, the terminal device restores the source primary cell configuration.

[0168] Optionally, if a Layer 1-2 triggered mobility handover configuration has been configured, and the Layer 1-2 triggered mobility cell handover includes security update information, the terminal device restores the source primary cell configuration.

[0169] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover has been configured, the previous radio resource control reconstruction was performed on the cell selection prior to restoring the source primary cell configuration, and the Layer 1-2 triggered mobility handover includes security update information, the terminal device restores the source primary cell configuration.

[0170] Optionally, if the previous radio resource control reconstruction was to restore the cell selection before the source primary cell configuration was restored, and the layer-1-2 triggered mobility cell handover included security update information, the terminal device restores the source primary cell configuration.

[0171] Optionally, if the terminal device has been configured to attempt a Layer 1-2 triggered mobility handover configuration, and the previous radio resource control reconstruction was performed before the restoration of the source primary cell configuration, and the first timer has expired, the terminal device restores the source primary cell configuration.

[0172] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover and the configuration for Layer 1-2 triggered mobility cell handover include security update information, and the first timer expires, the terminal device restores the source primary cell configuration.

[0173] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover has been configured, the cell selection before the previous radio resource control reconstruction was to restore the source primary cell configuration, the Layer 1-2 triggered mobility cell handover includes security update information, and the first timer has expired, the terminal device restores the source primary cell configuration.

[0174] Optionally, if the previous radio resource control reconstruction was performed before the restoration of the source primary cell configuration, and the layer-1-2 triggered mobility cell handover included security update information, and the first timer expired, the terminal device restores the source primary cell configuration.

[0175] Optionally, the restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer.

[0176] Optionally, the first timer triggers the T304 timer for mobile cell handover at the first level 2 of the master cell group.

[0177] Optionally, the terminal device selects or determines the first cell based on the first content.

[0178] Optionally, the first content includes at least one of the following: serving cell security does not change identifier, previously selected cell security does not change identifier, and attempting to trigger mobility handover configuration at layer 1 to layer 2.

[0179] Optionally, the first cell is the cell that performs fast recovery and / or radio resource control reconstruction.

[0180] Optionally, the terminal device determines whether to use the previously selected cell as the first cell by judging whether the serving cell security unchanging identifier is the same as the previously selected cell security unchanging identifier.

[0181] Optionally, the previously selected cell includes the cell determined during the radio resource control reconstruction initialization process.

[0182] Optionally, the previously selected cell includes the cell selected during the radio resource control reconstruction initialization process performed before restoring the source primary cell configuration.

[0183] Optionally, the previously selected cell includes the cell selected before the source primary cell configuration was restored.

[0184] Optionally, restoring the source primary cell configuration includes: the target cell configuration of the terminal based on the execution layer 1-2 trigger mobility cell handover application.

[0185] The technical solution of this embodiment restores the configuration of the primary cell in response to at least one condition being met. This technical solution improves the cell handover mechanism, thereby reducing signaling overhead and / or service interruption time.

[0186] Second Embodiment

[0187] Reference Figure 6 , Figure 6 This is a schematic diagram of the interaction timing according to the second embodiment, as shown below. Figure 6As shown, based on the first embodiment described above, the processing method further includes: the terminal device reporting a measurement report to the network device, and the network device sending a radio resource control reconfiguration signaling to the terminal device.

[0188] Optionally, the terminal device reports a measurement report to the network device (e.g., the source base station).

[0189] Optionally, the measurement report is a Layer 3 Measurement Report (MR).

[0190] Optionally, the source base station initiates Layer 1-2 mobility preparation, for example, by sending a Handover Request signaling.

[0191] Optionally, the source base station sends a handover request signaling to at least one candidate base station, such as the target base station and / or other base stations.

[0192] Optionally, Layer 1-2 mobility preparation is used to provide and / or obtain Layer 1-2 mobility configuration.

[0193] Optionally, the target base station and / or other base stations respond to the source base station by initiating Layer 1.2 mobility preparation, for example by sending a Handover Request Acknowledge signaling.

[0194] Optionally, the source base station, the target base station, and other base stations are all different Central Unit (CU) base stations.

[0195] Optionally, the handover request signaling and / or handover request confirmation signaling carries at least one of the following: LTM configuration identifier, LTM configuration, early uplink synchronization configuration, scheduling configuration, measurement configuration, serving cell security-unchanged identifier, and candidate cell security-unchanged identifier.

[0196] Optionally, the measurement configuration includes a layer 3 measurement configuration and / or a layer 1 measurement configuration.

[0197] Optionally, the Layer 1 measurement configuration also includes Layer 1-2 mobility events.

[0198] Optionally, a Layer 1-2 mobility event includes at least one of the following:

[0199] Event LTM2: The serving cell beam becomes worse than the absolute threshold;

[0200] Event LTM3: The beam of the candidate cell becomes more offset than the beam of the serving cell after compensation.

[0201] Event LTM4: The beam of candidate cell becomes better than the absolute threshold;

[0202] Event LTM5: The serving cell beam becomes worse than absolute threshold1 and the candidate cell beam becomes better than another absolute threshold2.

[0203] Optionally, a layer-one measurement event can be a beam management (BM) measurement event.

[0204] Optionally, the Layer 3 measurement configuration can be referenced in protocol TS 38.331 Release 18, 5.5.

[0205] Optionally, the source base station initiates a Layer 1-2 Mobility Configuration Update, for example, by sending a Layer 1-2 Mobility Configuration Update (LTM Configuration Update) signaling.

[0206] Optionally, the target base station and / or other base stations respond to the source base station by initiating a Layer 1 / 2 mobility configuration update, for example by sending a Layer 1 / 2 Mobility Configuration Update Acknowledge (LTM) signaling.

[0207] Optionally, the layer 1.2 mobility configuration update signaling and / or layer 1.2 mobility configuration update confirmation signaling carries at least one of the following: updated LTM configuration identifier, updated LTM configuration, updated advance uplink synchronization configuration, updated scheduling configuration, and updated measurement configuration.

[0208] Optionally, the source cell generates an LTM configuration, including at least one of the following: LTM configuration identifier, candidate cell LTM configuration, candidate cell security no-change identifier (NoSecurityChangeID), serving cell security no-change identifier (ServingCellNoSecurityChangeID), and attemptLTM-Switch. Other configurations can be found in protocol TS 38.300 Release 18, 6.3.2, LTM configuration (LTM-Config).

[0209] Optionally, the candidate cell LTM configuration includes candidate cell LTM configurations with the same center unit and / or candidate cell LTM configurations with different center units.

[0210] Optionally, the "candidate cell security does not change" and "service cell security does not change" indicators are used to determine at least one of the following:

[0211] Whether the serving cell and the candidate cell are the same central unit cell;

[0212] Does the handover between the first and second mobility cells at the execution layer require security updates and / or parameter resets?

[0213] Should fast recovery be performed during handover between Layer 1 and Layer 2 mobile cells?

[0214] Does the radio resource control re-establishment require cell selection and / or the use of the previously selected cell?

[0215] Whether the candidate mobility cells at each level (level 1 and level 2) belong to the same central unit cell.

[0216] Optionally, the Radio Resource Control (RRC) reconfiguration signaling carries the LTM configuration and / or the source cell generates the LTM configuration.

[0217] Optionally, the terminal device stores the LTM configuration.

[0218] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling.

[0219] Optionally, the Radio Resource Control (RRC) reconfiguration completion signaling is used in response to the source cell sending the RRC reconfiguration signaling.

[0220] The technical solution of this embodiment specifically involves the terminal device reporting a measurement report to the network device, and the network device sending a radio resource control reconfiguration signaling to the terminal device, so that the terminal device receives and stores the LTM configuration, and then performs cell handover and / or radio resource control reconstruction based on the LTM configuration. This can improve the technical mechanism of cell handover and thus support the reduction of signaling overhead and / or service interruption time during the handover process.

[0221] Third Embodiment

[0222] Based on any of the foregoing embodiments of this application, this embodiment further discloses the process by which a terminal device performs cell handover and / or security updates based on a layer-1-2 triggered mobility cell handover command.

[0223] Optionally, the source base station and / or serving cell may trigger early downlink synchronization.

[0224] Optionally, the source base station determines the candidate cells for early downlink synchronization by activating / deactivating the MAC CE based on the candidate cell TCI status.

[0225] Optionally, the measurement report includes a Layer 1 measurement report and / or a Layer 3 measurement report.

[0226] Optionally, the source base station and / or serving cell can trigger early downlink synchronization according to the following protocols: TS 38.321 Release 18, 5.18.36, 6.1.3.76.

[0227] Optionally, the source base station and / or serving cell may trigger early uplink synchronization.

[0228] Optionally, the source base station and / or serving cell can trigger early uplink synchronization with the candidate cell via PDCCH order.

[0229] Optionally, the terminal device sends a random access preamble to the candidate cell based on the received PDCCH order.

[0230] Optionally, the terminal device and the candidate cell may perform early uplink synchronization according to the following protocols: TS 38.321 Release 18.5.1 and TS 38.213 Release 18.8.21.

[0231] Optionally, the terminal device may report measurement results based on the measurement configuration and / or report measurement results when the candidate cell meets the measurement conditions, as per protocols TS 38.331 Release 18, 5.5 and TS 38.214 Release 18, 5.2.1.4.

[0232] Optionally, the source base station sends a Layer 1-2 trigger mobile cell handover command.

[0233] Optionally, the Layer 1-2 triggered mobility cell handover command carries the candidate cell identifier and / or advance time information, as can be found in the protocol, TS 38.321 Release 18, 6.1.3.75.

[0234] Optionally, the terminal device initiates Layer 1-2 to trigger a mobile cell handover, which can be referenced in protocols TS38.321 Release 18, 5.18.35 and TS 38.331 Release 18, 5.3.5.18.6.

[0235] Optionally, the terminal device determines the target cell for handover based on the candidate cell identifier carried in the Layer 1-2 triggered mobility cell handover command.

[0236] Optionally, the Layer 1-2 trigger mobile cell handover command also carries a next-hop chain counter.

[0237] Optionally, when the serving cell security unchanging identifier and the target cell candidate cell security unchanging identifier are different, a layer-1-2 mobile cell handover command is triggered, carrying the next-hop chain counter.

[0238] Optionally, when the serving cell security no-change identifier and the target cell candidate cell security no-change identifier are the same, the layer-1-2 triggered mobile cell handover command does not carry the next-hop chain counter.

[0239] Optionally, the terminal device determines whether to perform a security update based on the serving cell security immutability identifier and the target cell candidate cell security immutability identifier: for example, if the serving cell security immutability identifier and the target cell candidate cell security immutability identifier are different, a security update is performed; or if the serving cell security immutability identifier and the target cell candidate cell security immutability identifier are the same, a security update is not performed and / or the old security key is retained.

[0240] Optionally, the terminal device performs a security update based on the next-hop chain counter.

[0241] Optionally, the target cell is a candidate cell in the LTM configuration.

[0242] Optionally, the terminal device is detached from the source cell and the target cell configuration is applied.

[0243] Optionally, the terminal device starts timer T304.

[0244] Optionally, the terminal device initiates a random access procedure.

[0245] Optionally, if the terminal device does not have a target cell time advance and / or the target cell time advance value is at its maximum (e.g., FFF), then a random access procedure is initiated.

[0246] Optionally, a random access procedure is initiated when the LTM candidate time advance timer is not running and / or when the LTM candidate time advance timer expires.

[0247] Optionally, after the terminal device completes the random access process, the timer T304 is stopped.

[0248] Optionally, the terminal device completes conditional LTM cell handover.

[0249] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling based on the configured grant (CG).

[0250] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling based on the random access response uplink scheduling (UL Grant).

[0251] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling to the target cell.

[0252] Optionally, when the terminal device performs a conditional LTM handover without random access and receives the first downlink data and / or uplink data scheduling, the conditional LTM handover is considered complete.

[0253] Optionally, the terminal device stops timer T304 after receiving an instruction from the underlying and / or MAC layer indicating that random access exemption has been completed.

[0254] Optionally, the source cell sends a cell switch notification to the target base station.

[0255] Optionally, the cell handover notification may carry the cell identifier and / or TCI status identifier, as can be found in TS38.473 Release 18, 9.2.2.15, and 9.2.2.16.

[0256] The technical solution of this embodiment specifically involves the terminal device performing cell handover and / or security updates based on the Layer 1-2 triggered mobile cell handover command. The security update is performed based on the serving cell security unchanged identifier, the target cell candidate cell security unchanged identifier, and the next hop chain counter carried by the Layer 1-2 triggered mobile cell handover command, which can reduce signaling overhead.

[0257] Fourth embodiment

[0258] Based on any of the foregoing embodiments of this application, this embodiment further discloses the process of restoring the source primary cell configuration of the terminal device.

[0259] Optionally, the T304 timer times out if the terminal device fails to access the target cell.

[0260] Optionally, for terminal device random access failure and / or random access failure, please refer to protocol TS38.331 Release 18, 7.1.

[0261] Optionally, if the terminal device fails to receive uplink data scheduling and / or downlink data scheduling from the target cell, refer to TS 38.321 Release 18, 5.3.1, 5.4.1.

[0262] Optionally, the terminal device restores the source primary cell configuration in response to at least one condition being met.

[0263] Optionally, at least one condition includes at least one of the following:

[0264] First condition: The configuration for triggering mobility switching at layer 1 to layer 2 has been configured;

[0265] Second condition: The previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration;

[0266] The third condition: Layer 1-2 triggering of mobile cell handover includes security update information;

[0267] Fourth condition: The first timer times out.

[0268] Optionally, at least one condition must be met, including at least one of the following:

[0269] The first condition is not true;

[0270] The first and second conditions are met;

[0271] The first and third conditions are met;

[0272] The first, second, and third conditions are met;

[0273] The second and third conditions are met;

[0274] The first condition is not met, but the fourth condition is met;

[0275] The first, second, and fourth conditions are met;

[0276] The first, third, and fourth conditions are met;

[0277] The first, second, third, and fourth conditions are met;

[0278] The second condition is met, as are the third and fourth conditions.

[0279] Optionally, if the configuration for attempting Layer 1-2 to trigger mobility handover is not configured, the terminal device restores the source primary cell configuration.

[0280] Optionally, if the configuration for attempting Layer 1-2 mobility handover has been configured, and the previous radio resource control reconstruction was performed on the cell selection before the restoration of the source primary cell configuration, the terminal device restores the source primary cell configuration.

[0281] Optionally, if a Layer 1-2 triggered mobility handover configuration has been configured, and the Layer 1-2 triggered mobility cell handover includes security update information, the terminal device restores the source primary cell configuration.

[0282] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover has been configured, the previous radio resource control reconstruction was performed on the cell selection prior to restoring the source primary cell configuration, and the Layer 1-2 triggered mobility handover includes security update information, the terminal device restores the source primary cell configuration.

[0283] Optionally, if the previous radio resource control reconstruction was to restore the cell selection before the source primary cell configuration was restored, and the layer-1-2 triggered mobility cell handover included security update information, the terminal device restores the source primary cell configuration.

[0284] Optionally, the terminal device may also restore the source primary cell configuration based on the timeout of the first timer.

[0285] Optionally, if the configuration for attempting Layer 1-2 mobility handover is not configured and the first timer times out, the terminal device restores the source primary cell configuration.

[0286] Optionally, if the terminal device has been configured to attempt a Layer 1-2 triggered mobility handover configuration, and the previous radio resource control reconstruction was performed before the restoration of the source primary cell configuration, and the first timer has expired, the terminal device restores the source primary cell configuration.

[0287] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover and the configuration for Layer 1-2 triggered mobility cell handover include security update information, and the first timer expires, the terminal device restores the source primary cell configuration.

[0288] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover has been configured, the cell selection before the previous radio resource control reconstruction was to restore the source primary cell configuration, the Layer 1-2 triggered mobility cell handover includes security update information, and the first timer has expired, the terminal device restores the source primary cell configuration.

[0289] Optionally, if the previous radio resource control reconstruction was performed before the restoration of the source primary cell configuration, and the layer-1-2 triggered mobility cell handover included security update information, and the first timer expired, the terminal device restores the source primary cell configuration.

[0290] Optionally, the restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer.

[0291] Optionally, the first timer triggers the T304 timer for mobile cell handover at the first level 1 of the master cell group.

[0292] Optionally, the lower-level indicator triggers Layer 1-2 mobile cell handover and / or the lower-level indicator triggers Layer 1-2 mobile cell handover for the primary cell group.

[0293] Optionally, the cell selection before the terminal device restores the primary cell terminal configuration includes cell selection in the radio resource control reconstruction process.

[0294] Optionally, the radio resource control reconstruction process can be triggered before restoring the terminal configuration of the source primary cell.

[0295] Optionally, the cell security unchanging identifier determined during the radio resource control reconstruction process is different from the serving cell security unchanging identifier.

[0296] Optionally, in the radio resource control reconstruction process, the cell selected during cell selection does not have a security non-change identifier and the serving cell has a security non-change identifier.

[0297] Optionally, in the radio resource control reconstruction process, the cell selected during cell selection has a security non-change identifier and the serving cell does not have a security non-change identifier.

[0298] Optionally, the cell security unchanging identifier determined during the cell selection process in the radio resource control reconstruction procedure is different from the target cell security unchanging identifier for the LTM cell handover.

[0299] Optionally, the Layer 1-2 triggered mobile cell handover includes security updates, which are performed by lower-layer instructions and / or by providing a next-hop chain counter. For example, the terminal device performs a security update based on the next-hop chain counter indicated by the lower layer and generates security update information; if the lower-layer instructions do not include next-hop chain counter information, the terminal device does not perform a security update.

[0300] Optionally, the Next Hop Chaining Counter (NCC) is carried by the MAC CE, for example, a Layer 1 / 2 triggered mobile cell handover MAC CE.

[0301] Optionally, the terminal device initiates a radio resource control reconstruction process.

[0302] Optionally, after restoring the terminal configuration of the source primary cell, the terminal device initiates a radio resource control reconstruction process.

[0303] The technical solution of this embodiment specifically restores the source primary cell configuration by responding to at least one condition being met by the terminal device, thereby improving the technical mechanism for restoring the source cell configuration and thus supporting the reduction of uplink signaling overhead and / or service interruption time.

[0304] Fifth Embodiment

[0305] Reference Figure 7 , Figure 7 As a flowchart illustrating the processing method according to the fifth embodiment, this embodiment further discloses a step of the terminal device selecting or determining a first cell based on first content, which includes at least one of steps S31-S34, based on any of the foregoing embodiments of this application:

[0306] S31: If the security identifier of the serving cell is the same as that of the previously selected cell, the previously selected cell shall be selected or determined as the first cell.

[0307] S32: If the security indicator of the serving cell is different from that of the previously selected cell, perform cell selection to determine the first cell;

[0308] S33: If the configuration for attempting Layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, select or determine the previously selected cell as the first cell;

[0309] S34: If the configuration for attempting Layer 1 to Layer 2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, perform cell selection to determine the first cell.

[0310] In existing technologies, when a Layer 1 / 2 triggered mobility cell handover fails, for example, due to a T304 timeout, the terminal device will determine whether a security update has been performed to confirm whether the source cell configuration should be restored, or determine whether to restore the source cell configuration based on cell selection during the Radio Resource Control (RRC) reconstruction process, and then initiate an RRC reconstruction procedure. This approach leads to repeated execution of the RRC reconstruction procedure. For example, the terminal device may execute the RRC reconstruction procedure on the target cell and on candidate cells with the same serving cell identifier information as the source serving cell, or repeatedly execute the RRC reconstruction procedure on candidate cells with the same serving cell identifier information as the source serving cell. The terminal device may experience increased processing complexity and / or prolonged service interruption due to inconsistent cell selection results. This application optimizes the handling method and / or RRC reconstruction method after a Layer 1 / 2 triggered mobility cell handover failure to optimize rapid recovery of Layer 1 / 2 triggered mobility.

[0311] Optionally, during the initial procedure for reconstructing the radio resource control, the terminal device may use the previously selected cell.

[0312] Optionally, the terminal device determines whether to use the previously selected cell based on the previously selected cell security unchanging identifier and / or the serving cell security unchanging identifier.

[0313] Optionally, if the previously selected cell security unchanging identifier is the same as the service cell security unchanging identifier, the previously selected cell will be used.

[0314] Optionally, if the security unchanging identifier of the previously selected cell is different from the security unchanging identifier of the serving cell, perform cell selection and / or do not use the previously selected cell.

[0315] Optionally, the terminal device may also determine whether to use the previously selected cell based on the attempted LTM handover configuration.

[0316] Optionally, if an LTM handover configuration is configured, and the previously selected cell security no-change identifier is the same as the serving cell security no-change identifier, the previously selected cell is used.

[0317] Optionally, when an LTM handover configuration is configured, and the previously selected cell security invariant identifier is different from the serving cell security invariant identifier, cell selection is performed and / or the previously selected cell is not used.

[0318] Optionally, the terminal device uses the previously selected cell, including at least one of the following:

[0319] Timer T311 should not be started or restarted.

[0320] The previously selected community will be considered the selected community.

[0321] The timer T311 timed out;

[0322] Cell selection will not be performed.

[0323] Optionally, timer T311 is used to monitor whether cell selection is completed during the radio resource control reconstruction process. For details, please refer to protocol TS 38.331 release 18, 7.1.1.

[0324] Optionally, the previously selected cell includes at least one of the following:

[0325] During the initialization of radio resource control reconstruction, cell selection is performed to determine the cell.

[0326] Before restoring the configuration of the primary source cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell.

[0327] Before restoring the configuration of the primary cell, select the cell to be selected.

[0328] Optionally, the terminal device uses the previously selected cell to perform Layer 1-2 triggering of rapid mobility recovery.

[0329] Optionally, the terminal device may use the previously selected cell to perform Layer 1-2 mobility fast recovery based on the selected cell security non-change identifier and / or the service cell security non-change identifier.

[0330] Optionally, if the selected cell security does not change identifier and the serving cell security does not change identifier are the same, the terminal device executes Layer 1.2 to trigger rapid mobility recovery.

[0331] Optionally, if the selected cell security no-change identifier is different from the serving cell security no-change identifier, the radio resource control reconstruction process is triggered.

[0332] Optionally, the terminal device may also use the previously selected cell to perform Layer 1-2 triggering of rapid mobility recovery based on the failure of the primary cell group radio link and / or the failure of the primary cell group synchronization reconfiguration.

[0333] Optionally, the layer-1-2 triggering of fast mobility recovery includes at least one of the following:

[0334] After the cell selection is re-established in Radio Resource Control, Layer 1-2 triggers mobile cell handover;

[0335] Do not send a Radio Resource Control Reconstruction Request;

[0336] Do not initiate the wireless resource control reconstruction process.

[0337] Optionally, a synchronization reconfiguration failure includes at least one of the following:

[0338] Switching (HO, HandOver) failed;

[0339] Conditional Handover (CHO) failed;

[0340] Layer 1-2 mobile cell handover failed;

[0341] T304 timer timed out.

[0342] Optionally, the serving cell security unchanging identifier includes: the serving cell security unchanging identifier stored in the current terminal configuration, and / or the serving cell security unchanging identifier stored in a variable.

[0343] Optionally, the selected cell security non-change identifier includes: the candidate cell security non-change identifier in the Layer 1 Level 2 Triggered Mobility Configuration, and / or, the candidate cell security non-change identifier in the selected Layer 1 Level 2 Triggered Mobility Configuration.

[0344] Optionally, the terminal device may send a Radio Resource Control Reconstruction Request and / or trigger a Radio Resource Control Reconstruction Procedure based on the previously selected cell.

[0345] Optionally, triggering the Radio Resource Control (RRC) re-establishment process includes at least one of sending a RRC re-establishment request, accepting a RRC re-establishment request, and sending a RRC re-establishment completion message, as detailed in TS38.331 release 18, 5.3.7.4, and 5.3.5.5.

[0346] Optionally, the terminal device performs fast recovery or radio resource control reconstruction with the candidate cell of the source base station.

[0347] Optionally, the terminal device performs fast recovery or radio resource control reconstruction with the candidate cells of the target base station.

[0348] Optionally, the terminal device performs radio resource control reconstruction with other base stations.

[0349] The technical solution of this embodiment optimizes the cell selection process by selecting or determining the first cell based on the first content, thereby reducing processing complexity and / or reducing service interruption time.

[0350] Sixth Embodiment

[0351] Reference Figure 8 , Figure 8 This is a flowchart illustrating the processing method according to the sixth embodiment. The method described in this embodiment can be applied to network devices (such as base stations) and includes the following steps:

[0352] S1: Send Layer 1-2 trigger mobility handover configuration information so that the terminal device can restore the source primary cell configuration in response to at least one condition being met.

[0353] Optionally, the network device sends Layer 1-2 mobility handover configuration information to the terminal device.

[0354] Optionally, the layer-1-2 mobility handover configuration information includes the serving cell security no-change identifier and / or the candidate cell security no-change identifier.

[0355] Optionally, the terminal device restores the source primary cell configuration in response to at least one condition being met.

[0356] Optionally, at least one condition includes at least one of the following:

[0357] First condition: The terminal device has been configured to attempt layer 1-2 trigger mobility handover;

[0358] Second condition: The terminal device's previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration;

[0359] The third condition: The terminal device layer 1.2 triggers the mobile cell handover, including security update information;

[0360] Fourth condition: The terminal device's first timer times out.

[0361] Optionally, at least one condition must be met, including at least one of the following:

[0362] The first condition is not true;

[0363] The first and second conditions are met;

[0364] The first and third conditions are met;

[0365] The first, second, and third conditions are met;

[0366] The second and third conditions are met;

[0367] The first condition is not met, but the fourth condition is met;

[0368] The first, second, and fourth conditions are met;

[0369] The first, third, and fourth conditions are met;

[0370] The first, second, third, and fourth conditions are met;

[0371] The second condition is met, as are the third and fourth conditions.

[0372] Optionally, if the configuration for attempting Layer 1-2 to trigger mobility handover is not configured, the terminal device restores the source primary cell configuration.

[0373] Optionally, if the configuration for attempting Layer 1-2 mobility handover has been configured, and the previous radio resource control reconstruction was performed on the cell selection before the restoration of the source primary cell configuration, the terminal device restores the source primary cell configuration.

[0374] Optionally, if a Layer 1-2 triggered mobility handover configuration has been configured, and the Layer 1-2 triggered mobility cell handover includes security update information, the terminal device restores the source primary cell configuration.

[0375] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover has been configured, the previous radio resource control reconstruction was performed on the cell selection prior to restoring the source primary cell configuration, and the Layer 1-2 triggered mobility handover includes security update information, the terminal device restores the source primary cell configuration.

[0376] Optionally, if the previous radio resource control reconstruction was to restore the cell selection before the source primary cell configuration was restored, and the layer-1-2 triggered mobility cell handover included security update information, the terminal device restores the source primary cell configuration.

[0377] Optionally, the terminal device may also restore the source primary cell configuration based on the timeout of the first timer.

[0378] Optionally, if the configuration for attempting Layer 1-2 mobility handover is not configured and the first timer times out, the terminal device restores the source primary cell configuration.

[0379] Optionally, if the terminal device has been configured to attempt a Layer 1-2 triggered mobility handover configuration, and the previous radio resource control reconstruction was performed before the restoration of the source primary cell configuration, and the first timer has expired, the terminal device restores the source primary cell configuration.

[0380] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover and the configuration for Layer 1-2 triggered mobility cell handover include security update information, and the first timer expires, the terminal device restores the source primary cell configuration.

[0381] Optionally, if the configuration for attempting Layer 1-2 triggered mobility handover has been configured, the cell selection before the previous radio resource control reconstruction was to restore the source primary cell configuration, the Layer 1-2 triggered mobility cell handover includes security update information, and the first timer has expired, the terminal device restores the source primary cell configuration.

[0382] Optionally, if the previous radio resource control reconstruction was performed before the restoration of the source primary cell configuration, and the layer-1-2 triggered mobility cell handover included security update information, and the first timer expired, the terminal device restores the source primary cell configuration.

[0383] Optionally, the restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer.

[0384] Optionally, the first timer triggers the T304 timer for mobile cell handover at the first level 2 of the master cell group.

[0385] Optionally, the terminal device selects or determines the first cell based on the first content.

[0386] Optionally, if the security unchanged identifier of the serving cell is the same as that of the candidate cell, the layer-1-2 triggering of mobility cell handover includes security update information.

[0387] Optionally, the first cell is the cell that performs fast recovery and / or radio resource control reconstruction.

[0388] Optionally, the first content includes at least one of the following:

[0389] The signage remains unchanged to ensure community safety.

[0390] The safety signage for the previously selected residential area remains unchanged.

[0391] Try configuring a layer-by-layer, two-tier mobility switching mechanism.

[0392] Optionally, the terminal device selects or determines the first cell based on the first content, including at least one of the following:

[0393] If the security identifier of the serving cell is the same as that of the previously selected cell, the terminal device selects or determines the previously selected cell as the first cell.

[0394] If the security identifier of the serving cell is different from that of the previously selected cell, the terminal device performs cell selection to determine the first cell.

[0395] If the configuration for attempting Layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, the terminal device selects or determines the previously selected cell as the first cell.

[0396] If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, the terminal device performs cell selection to determine the first cell.

[0397] Optionally, the previously selected cell included at least one of the following:

[0398] During the initialization process of radio resource control reconstruction, cell selection is performed to determine the cell.

[0399] Before restoring the configuration of the primary source cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell.

[0400] Before restoring the configuration of the primary cell, select the cell to be selected.

[0401] Optionally, the terminal device uses the previously selected cell to perform Layer 1-2 triggering of rapid mobility recovery.

[0402] Optionally, the terminal device may use the previously selected cell to perform Layer 1-2 mobility fast recovery based on the selected cell security non-change identifier and / or the service cell security non-change identifier.

[0403] Optionally, if the selected cell security does not change identifier and the serving cell security does not change identifier are the same, the terminal device executes Layer 1.2 to trigger rapid mobility recovery.

[0404] Optionally, if the selected cell security no-change identifier is different from the serving cell security no-change identifier, the radio resource control reconstruction process is triggered.

[0405] Optionally, the terminal device may also use the previously selected cell to perform Layer 1-2 triggering of rapid mobility recovery based on the failure of the primary cell group radio link and / or the failure of the primary cell group synchronization reconfiguration.

[0406] The technical solution in this embodiment specifically sends layer 1.2 mobility handover configuration information through network devices, so that the terminal device can restore the source primary cell configuration when at least one condition is met. This can improve the technical mechanism of cell handover and thus support the reduction of signaling overhead and / or service interruption time.

[0407] Seventh Embodiment

[0408] Reference Figure 9 , Figure 9 Schematic diagram of the processing apparatus provided in the embodiments of this application Figure 1 The device can be mounted on or is the terminal device in the above method embodiments. Figure 9 The processing apparatus shown can be used to perform some or all of the functions described in the method embodiments above. For example... Figure 9 As shown, the processing device 1100 includes:

[0409] Processing module 1101 is used to restore the source primary cell configuration in response to at least one condition being met.

[0410] Optionally, at least one condition includes at least one of the following:

[0411] First condition: The configuration for triggering mobility switching at layer 1 to layer 2 has been configured;

[0412] Second condition: The previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration;

[0413] The third condition: Layer 1-2 triggering of mobile cell handover includes security update information;

[0414] Fourth condition: The first timer times out.

[0415] Optionally, at least one condition must be met, including at least one of the following:

[0416] The first and second conditions are met;

[0417] The first and third conditions are met;

[0418] The first, second, and third conditions are met;

[0419] The second and third conditions are met;

[0420] The first, second, and fourth conditions are met;

[0421] The first, third, and fourth conditions are met;

[0422] The first, second, third, and fourth conditions are met;

[0423] The second condition is met, as are the third and fourth conditions.

[0424] Optionally, the device further includes at least one of the following:

[0425] The restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer;

[0426] The first timer is the T304 timer that triggers mobile cell handover at the primary cell group level 1-2.

[0427] The first cell is selected or determined based on the first content.

[0428] Optionally, the device further includes at least one of the following:

[0429] The first cell is the cell that performs fast recovery and / or radio resource control reconstruction;

[0430] The first content includes at least one of the following:

[0431] The signage remains unchanged to ensure community safety.

[0432] The safety signage for the previously selected residential area remains unchanged.

[0433] Try configuring a layer-by-layer, two-tier mobility switching mechanism.

[0434] Optionally, selecting or determining the first cell based on the first content includes at least one of the following:

[0435] If the security sign of the serviced community is the same as that of the previously selected community, the previously selected community shall be selected or designated as the first community.

[0436] If the security indicator of the serviced community is different from that of the previously selected community, the community selection process will determine the first community.

[0437] If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, then the previously selected cell shall be selected or determined as the first cell.

[0438] If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, then cell selection is performed to determine the first cell.

[0439] Optionally, the previously selected cell included at least one of the following:

[0440] During the initialization process of radio resource control reconstruction, cell selection is performed to determine the cell.

[0441] Before restoring the configuration of the primary cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell.

[0442] Before restoring the configuration of the primary cell, select the cell to be selected.

[0443] The processing apparatus provided in this application embodiment can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0444] Eighth embodiment

[0445] Reference Figure 10 , Figure 10 Schematic diagram of the processing apparatus provided in the embodiments of this application Figure 2 The device can be mounted on or is the network device in the above method embodiments. Figure 10 The processing apparatus shown can be used to perform some or all of the functions described in the method embodiments above. For example... Figure 10 As shown, the processing apparatus 1200 includes:

[0446] The sending module 1201 is used to send layer 1-2 triggered mobility handover configuration information so that the terminal device can restore the source primary cell configuration in response to at least one condition being met.

[0447] Optionally, at least one condition includes at least one of the following:

[0448] First condition: The terminal device has been configured to attempt layer 1-2 trigger mobility handover;

[0449] Second condition: The terminal device's previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration;

[0450] The third condition: The terminal device layer 1.2 triggers the mobile cell handover, including security update information;

[0451] Fourth condition: The terminal device's first timer times out.

[0452] Optionally, at least one condition must be met, including at least one of the following:

[0453] The first and second conditions are met;

[0454] The first and third conditions are met;

[0455] The first, second, and third conditions are met;

[0456] The second and third conditions are met;

[0457] The first, second, and fourth conditions are met;

[0458] The first, third, and fourth conditions are met;

[0459] The first, second, third, and fourth conditions are met;

[0460] The second condition is met, as are the third and fourth conditions.

[0461] Optionally, the device further includes at least one of the following:

[0462] The configuration information for triggering mobility handover at layer 1 to layer 2 includes the serving cell security not changing identifier and / or the candidate cell security not changing identifier;

[0463] The restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer;

[0464] The first timer is the T304 timer that triggers mobile cell handover at the primary cell group level 1-2.

[0465] The terminal device selects or determines the first cell based on the first content.

[0466] Optionally, the device further includes at least one of the following:

[0467] When the security identity of the serving cell and the security identity of the candidate cell are the same, the layer-1-2 triggering of mobile cell handover includes security update information;

[0468] The first cell is the cell that performs fast recovery and / or radio resource control reconstruction;

[0469] The first content includes at least one of the following:

[0470] The signage remains unchanged to ensure community safety.

[0471] The safety signage for the previously selected residential area remains unchanged.

[0472] Try configuring a layer-by-layer, two-tier mobility switching mechanism.

[0473] Optionally, the terminal device selects or determines the first cell based on the first content, including at least one of the following:

[0474] If the security identifier of the serving cell is the same as that of the previously selected cell, the terminal device selects or determines the previously selected cell as the first cell.

[0475] If the security identifier of the serving cell is different from that of the previously selected cell, the terminal device performs cell selection to determine the first cell.

[0476] If the configuration for attempting Layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, the terminal device selects or determines the previously selected cell as the first cell.

[0477] If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, the terminal device performs cell selection to determine the first cell.

[0478] Optionally, the previously selected cell included at least one of the following:

[0479] During the initialization process of radio resource control reconstruction, cell selection is performed to determine the cell.

[0480] Before restoring the configuration of the primary cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell.

[0481] Before restoring the configuration of the primary cell, select the cell to be selected.

[0482] The processing apparatus provided in this application embodiment can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar, and will not be described again here.

[0483] See Figure 11 , Figure 11 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application. Figure 11 As shown, the communication device 160 described in this embodiment can be a terminal device (or a component that can be used in a terminal device) or a network device (or a component that can be used in a network device) mentioned in the foregoing method embodiments. The communication device 160 can be used to implement the methods corresponding to the terminal device or network device described in the above method embodiments, as detailed in the descriptions in the above method embodiments.

[0484] The communication device 160 may include one or more processors 161, which may also be referred to as processing units, and can perform certain control or processing functions. The processor 161 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, while the central processing unit can be used to control the communication device, execute software programs, and process data from the software programs.

[0485] Optionally, the processor 161 may also store instructions 163 or data (e.g., intermediate data). Optionally, instructions 163 may be executed by the processor 161, causing the communication device 160 to perform the methods described in the above method embodiments corresponding to the terminal device or network device.

[0486] Optionally, the communication device 160 may include a circuit that can perform the functions of sending, receiving, or communicating in the foregoing method embodiments.

[0487] Optionally, the communication device 160 may include one or more memories 162, which may store instructions 164 that can be executed on the processor 161 to cause the communication device 160 to perform the methods described in the above method embodiments.

[0488] Optionally, the memory 162 may also store data. The processor 161 and the memory 162 may be configured separately or integrated together.

[0489] Optionally, the communication device 160 may further include a transceiver 165 and / or an antenna 166. The processor 161, which may be referred to as a processing unit, controls the communication device 160 (terminal device, core network device, or wireless access network device). The transceiver 165, which may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, is used to implement the transceiver functions of the communication device 160.

[0490] Optionally, if the communication device 160 is used to implement the operation corresponding to the terminal device in the above embodiments, for example, the transceiver 165 and / or the processor 161 may restore the source primary cell configuration in response to at least one condition being met.

[0491] Optionally, the specific implementation process of processor 161 and transceiver 165 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0492] Optionally, if the communication device 160 is used to implement the operation corresponding to the network device in the above embodiments, for example, the transceiver 165 can send layer 1 / 2 triggered mobility handover configuration information so that the terminal device can restore the source primary cell configuration in response to at least one condition being met.

[0493] Optionally, the specific implementation process of processor 161 and transceiver 165 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0494] The processor 161 and transceiver 165 described in this application can be implemented on ICs (Integrated Circuits), analog integrated circuits, RFICs (Radio Frequency Integrated Circuits), mixed-signal integrated circuits, ASICs (Application Specific Integrated Circuits), PCBs (Printed Circuit Boards), electronic devices, etc. The processor 161 and transceiver 165 can also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N-type Metal-Oxide-Semiconductor), PMOS (Positive channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), Bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc. In this application, the communication device can be a terminal device (such as a mobile phone) or a network device (such as a base station), depending on the context. Furthermore, the terminal device can be implemented in various forms. For example, the terminal devices described in this application may include mobile terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0495] Although the communication devices described above are exemplified as terminal devices or network devices, the scope of the communication devices described in this application is not limited to the aforementioned terminal devices or network devices, and the structure of the communication devices may vary. Figure 11 There are limitations. Communication equipment can be a standalone device or part of a larger device.

[0496] This application also provides a communication system, including: a terminal device as described in any of the above embodiments; and a network device as described in any of the above embodiments.

[0497] This application also provides a communication device, including a memory and a processor. The memory stores a processing program, and when the processing program is executed by the processor, it implements the steps of the processing method in any of the above embodiments.

[0498] The communication equipment mentioned in this application may be a terminal device (such as a mobile phone), a network device (such as a base station), or a chip (such as a SOC or a baseband chip with communication functions). The specific meaning needs to be clarified according to the context.

[0499] This application also provides a computer-readable storage medium storing a processing program, which, when executed by a processor, implements the steps of the processing method in any of the above embodiments.

[0500] In the embodiments of the communication device and computer-readable storage medium provided in this application, all technical features of any of the above-described processing method embodiments may be included. The extended and explanatory content of the specification is basically the same as that of the embodiments of the above methods, and will not be repeated here.

[0501] This application also provides a computer program product, which includes computer program code. When the computer program code is run on a computer, it causes the computer to perform the methods described in the various possible implementations above. This application also provides a chip, including a memory and a processor. The memory stores a computer program, and the processor retrieves and runs the computer program from the memory, causing a device with the chip installed to perform the methods described in the various possible implementations above.

[0502] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, those skilled in the art will know that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems. The sequence numbers of the embodiments of this application above are merely for description and do not represent the superiority or inferiority of the embodiments. The steps in the method of the embodiments of this application can be adjusted, merged, and deleted according to actual needs. The units in the device of the embodiments of this application can be merged, divided, and deleted according to actual needs. In this application, the same or similar terms, concepts, technical solutions, and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions of this application, for the same or similar terms, concepts, technical solutions, and / or application scenario descriptions that are not described in detail later, you can refer to their previous related detailed descriptions. In this application, the descriptions of each embodiment have their own emphasis. For the parts that are not described or recorded in detail in a certain embodiment, you can refer to the relevant descriptions of other embodiments. The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0503] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the methods of each embodiment of this application. In the above embodiments, they can be implemented entirely or partially by software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented entirely or partially in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. Computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. Available media can be magnetic media (e.g., floppy disks, memory disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)). The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A processing method, characterized in that, Applied to terminal devices, including the following steps: S2: In response to at least one condition being met, restore the configuration of the source primary cell; At least one condition includes: Second condition: The previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration; The third condition: Layer 1-2 triggering of mobile cell handover includes security update information; At least one condition must be met, including: both the second and third conditions must be met; Among them, cell selection before restoring the configuration of the primary cell includes cell selection in the radio resource control reconstruction process; Among them, the cell selection before restoring the primary cell configuration must meet at least one of the following requirements: In the radio resource control reconstruction process, the candidate cell security non-change identifier corresponding to the cell determined by cell selection is different from the serving cell security non-change identifier. In the radio resource control reconstruction process, the candidate cell security unchange identifier corresponding to the cell determined by cell selection is different from the target cell security unchange identifier for LTM cell handover. Among them, the "candidate community security does not change sign" and the "service community security does not change sign" are used to determine at least one of the following: Whether the serving cell and the candidate cell are the same central unit cell; Does the handover between the first and second mobility cells at the execution layer require security updates and / or parameter resets? Whether the candidate mobility cells at each level (level 1 and level 2) belong to the same central unit cell.

2. The method as described in claim 1, characterized in that, It also includes at least one of the following: The criteria for determining whether the safety of a candidate community or a service community remains unchanged are also used to judge at least one of the following: Should fast recovery be performed during handover between Layer 1 and Layer 2 mobile cells? Does the radio resource control re-establishment require cell selection and / or the use of the previously selected cell? At least one condition, and also includes at least one of the following: First condition: The configuration for triggering mobility switching at layer 1 to layer 2 has been configured; Fourth condition: The first timer times out.

3. The method as described in claim 2, characterized in that, At least one condition must be met, and at least one of the following must also be included: The first and second conditions are met; The first and third conditions are met; The first, second, and third conditions are met; The first, second, and fourth conditions are met; The first, third, and fourth conditions are met; The first, second, third, and fourth conditions are met; The second condition is met, as are the third and fourth conditions.

4. The method as described in claim 2, characterized in that, It also includes at least one of the following: The restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer; The first timer is the T304 timer that triggers mobile cell handover at the primary cell group level 1-2. The first cell is selected or determined based on the first content.

5. The method as described in claim 4, characterized in that, It also includes at least one of the following: The first cell is the cell that performs fast recovery and / or radio resource control reconstruction; The first content includes at least one of the following: The signage remains unchanged to ensure community safety. The safety signage for the previously selected residential area remains unchanged. Try configuring a layer-by-layer, two-tier mobility switching mechanism.

6. The method as described in claim 5, characterized in that, Selecting or determining a first cell based on the first content includes at least one of the following: If the security sign of the serviced community is the same as that of the previously selected community, the previously selected community shall be selected or designated as the first community. If the security indicator of the serviced community is different from that of the previously selected community, the community selection process will determine the first community. If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, then the previously selected cell shall be selected or determined as the first cell. If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, then cell selection is performed to determine the first cell.

7. The method as described in claim 6, characterized in that, The previously selected neighborhood included at least one of the following: During the initialization process of radio resource control reconstruction, cell selection is performed to determine the cell. Before restoring the configuration of the primary cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell. Before restoring the configuration of the primary cell, select the cell to be selected.

8. A processing method, characterized in that, Applied to network devices, including the following steps: S1: Send Layer 1-2 trigger mobility handover configuration information so that the terminal device can restore the source primary cell configuration in response to at least one condition being met; At least one condition includes: Second condition: The previous radio resource control reconstruction was the cell selection before the restoration of the primary cell configuration; The third condition: Layer 1-2 triggering of mobile cell handover includes security update information; At least one condition must be met, including: both the second and third conditions must be met; Among them, cell selection before restoring the configuration of the primary cell includes cell selection in the radio resource control reconstruction process; Among them, the cell selection before restoring the primary cell configuration must meet at least one of the following requirements: In the radio resource control reconstruction process, the candidate cell security non-change identifier corresponding to the cell determined by cell selection is different from the serving cell security non-change identifier. In the radio resource control reconstruction process, the candidate cell security unchange identifier corresponding to the cell determined by cell selection is different from the target cell security unchange identifier for LTM cell handover. Among them, the "candidate community security does not change sign" and the "service community security does not change sign" are used to determine at least one of the following: Whether the serving cell and the candidate cell are the same central unit cell; Does the handover between the first and second mobility cells at the execution layer require security updates and / or parameter resets? Whether the candidate mobility cells at each level (level 1 and level 2) belong to the same central unit cell.

9. The method as described in claim 8, characterized in that, It also includes at least one of the following: The criteria for determining whether the safety of a candidate community or a service community remains unchanged are also used to judge at least one of the following: Should fast recovery be performed during handover between Layer 1 and Layer 2 mobile cells? Does the radio resource control re-establishment require cell selection and / or the use of the previously selected cell? At least one condition, and also includes at least one of the following: First condition: The terminal device has been configured to attempt layer 1-2 trigger mobility handover; Fourth condition: The terminal device's first timer times out.

10. The method as described in claim 9, characterized in that, At least one condition must be met, and at least one of the following must also be included: The first and second conditions are met; The first and third conditions are met; The first, second, and third conditions are met; The first, second, and fourth conditions are met; The first, third, and fourth conditions are met; The first, second, third, and fourth conditions are met; The second condition is met, as are the third and fourth conditions.

11. The method as described in claim 9, characterized in that, It also includes at least one of the following: The configuration information for triggering mobility handover at layer 1 to layer 2 includes the serving cell security not changing identifier and / or the candidate cell security not changing identifier; The restored source primary cell configuration does not include the packet data aggregation protocol state variables carried by the signaling bearer; The first timer is the T304 timer that triggers mobile cell handover at the primary cell group level 1-2. The terminal device selects or determines the first cell based on the first content.

12. The method as described in claim 11, characterized in that, It also includes at least one of the following: When the security identity of the serving cell and the security identity of the candidate cell are the same, the layer-1-2 triggering of mobile cell handover includes security update information; The first cell is the cell that performs fast recovery and / or radio resource control reconstruction; The first content includes at least one of the following: The signage remains unchanged to ensure community safety. The safety signage for the previously selected residential area remains unchanged. Try configuring a layer-by-layer, two-tier mobility switching mechanism.

13. The method as described in claim 12, characterized in that, The terminal device selects or determines the first cell based on the first content, including at least one of the following: If the security identifier of the serving cell is the same as that of the previously selected cell, the terminal device selects or determines the previously selected cell as the first cell. If the security identifier of the serving cell is different from that of the previously selected cell, the terminal device performs cell selection to determine the first cell. If the configuration for attempting Layer 1-2 mobility handover has been configured, and the serving cell security no-change identifier is the same as the previously selected cell security no-change identifier, the terminal device selects or determines the previously selected cell as the first cell. If the configuration for attempting a layer 1-2 mobility handover has been configured, and the serving cell security unchanging identifier is different from the previously selected cell security unchanging identifier, the terminal device performs cell selection to determine the first cell.

14. The method as described in claim 13, characterized in that, The previously selected neighborhood included at least one of the following: During the initialization process of radio resource control reconstruction, cell selection is performed to determine the cell. Before restoring the configuration of the primary cell, the cell selection process is performed during the radio resource control reconstruction initialization process to determine the cell. Before restoring the configuration of the primary cell, select the cell to be selected.

15. A communication device, characterized in that, include: A memory, a processor, and a processing program stored in the memory and executable on the processor, the processing program being executed by the processor to implement the steps of the processing method as described in any one of claims 1 to 14.

16. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which is executed by a processor to implement the steps of the processing method as described in any one of claims 1 to 14.

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