Processing method, communication device and storage medium

Abstract

According to the technical scheme provided by the invention, the terminal equipment receives the condition switching cancelling or modifying command sent by the source node aiming at the scene of selectively activating the MCG (Subsequence CHO), and the condition switching cancelling or modifying command of a certain candidate cell can be sent to the terminal equipment through the scheme, so that the subsequence CHO can be supported under the condition that RRC (Radio Resource Control) is not needed.

Description

Processing method, communication device and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a processing method, communication equipment and storage medium. Background Art

[0002] In existing protocols, after a terminal device performs a Conditional Handover (CHO), the target gNB (base station) must send a HANDOVER SUCCESS message to the source gNB to inform the source gNB that the terminal device has successfully switched to the target cell. Subsequently, the source gNB sends an SN STATUS TRANSFER message to the target gNB to inform it of the uplink PDCP SN (Packet Data Convergence Protocol Sequence Number) reception status and the downlink PDCP SN transmission status. Finally, after the terminal device performs CHO, it releases the stored CHO configuration.

[0003] During the process of conceiving and implementing this application, the inventors discovered at least the following problems:

[0004] In scenarios supporting selective activation of the Master Cell Group (MCG) (also known as subsequent CHO), after executing the initial CHO, the terminal device must store the CHO configuration for subsequent CHO evaluation. Therefore, when the terminal device cancels or modifies a prepared conditional handover for a candidate cell during subsequent CHO, the candidate gNB must send a conditional handover cancel or modify command to the source gNB that initiated the CHO procedure. However, by this time, the terminal device may have already switched to another gNB. Existing protocols do not clearly define how to send the conditional handover cancel or modify command for a candidate cell to the terminal device, resulting in the terminal device being unable to support subsequent CHO.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical Solutions

[0006] The main purpose of this application is to provide a processing method, a communication device and a storage medium, which can send a conditional handover cancellation or modification command of a candidate cell to a terminal device for the selective activation MCG (subsequent CHO) scenario, thereby supporting subsequent CHO without the need for RRC reconfiguration.

[0007] This application provides a processing method that can be applied to a terminal device (such as a mobile phone), including:

[0008] The terminal device receives a condition switching cancel or modify command.

[0009] Optionally, the method further comprises at least one of the following:

[0010] The conditional switching cancellation or modification command is sent by the source node to the terminal device;

[0011] The conditional switching cancellation or modification command is sent directly to the source node by the third network node;

[0012] The conditional handover cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node;

[0013] The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes;

[0014] The conditional handover cancel or modify command includes the conditional allocation ID of the third network node.

[0015] Optionally, the method further comprises:

[0016] The first information is sent, so that the second network node sends a handover success message based on the first information and the source node receives the handover success message.

[0017] Optionally, the method further comprises at least one of the following:

[0018] The handover success message includes information of the second network node;

[0019] The first information is a handover completion message sent by the terminal device to the second network node;

[0020] The first information includes information of the source node;

[0021] The first network node is a network node that initiates continuous conditional switching;

[0022] The second network node is a network node where the candidate cell selected for conditional handover of the terminal is located;

[0023] The second network node belongs to a set of candidate network nodes;

[0024] The third network node belongs to a set of candidate network nodes;

[0025] The handover success message is received by the source node to which the terminal device accesses;

[0026] The handover success message is forwarded by the first network node to the source node accessed by the terminal device;

[0027] The handover success message is received by all candidate network nodes;

[0028] The candidate network nodes include a source node and / or a first network node.

[0029] The present application also provides a processing method, which can be applied to a network device (such as a base station), comprising the steps of:

[0030] The source node sends a conditional switching cancel or modification command to the terminal device.

[0031] Optionally, the method further comprises at least one of the following:

[0032] Receive condition switching cancellation or modification command;

[0033] The conditional switching cancellation or modification command is sent directly to the source node by the third network node;

[0034] The conditional handover cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node;

[0035] The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes;

[0036] The conditional switching cancellation or modification command includes the conditional allocation ID of the third network node;

[0037] Receive a switching success message.

[0038] Optionally, the method further comprises at least one of the following:

[0039] The handover success message is directly sent by the second network node based on the first information;

[0040] The handover success message is forwarded by the first network node from the second network node;

[0041] The handover success message includes information of the second network node;

[0042] The first information is a handover completion message sent by the terminal device to the second network node;

[0043] The first information includes information of the source node;

[0044] The first network node is a network node that initiates continuous conditional switching;

[0045] The second network node is a network node where the candidate cell selected for conditional handover of the terminal is located;

[0046] The second network node belongs to a set of candidate network nodes;

[0047] The third network node belongs to a set of candidate network nodes;

[0048] The candidate network nodes include a source node and / or a first network node.

[0049] The present application also provides a processing method, which can be applied to a network device (such as a base station), comprising the steps of:

[0050] The third network node sends a conditional handover cancel or modify command, so that the terminal device receives the conditional handover cancel or modify command.

[0051] Optionally, the method further comprises at least one of the following:

[0052] The conditional switching cancellation or modification command is sent by the source node to the terminal device;

[0053] The conditional switching cancellation or modification command is sent directly to the source node by the third network node;

[0054] The conditional handover cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node;

[0055] The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes;

[0056] The conditional handover cancel or modify command includes the conditional allocation ID of the third network node.

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

[0058] The third network node belongs to a set of candidate network nodes;

[0059] The candidate network nodes include a source node and / or a first network node;

[0060] The first network node is a network node that initiates continuous conditional switching.

[0061] The present application also provides a processing method, which can be applied to a network device (such as a base station), comprising the steps of:

[0062] The first network node sends a conditional handover cancel or modify command, so that the terminal device receives the conditional handover cancel or modify command, where the conditional handover cancel or modify command is sent by the third network node.

[0063] Optionally, the method further comprises at least one of the following:

[0064] The conditional switching cancellation or modification command is sent by the source node to the terminal device;

[0065] The conditional handover cancellation or modification command is forwarded by the first network node to the source node;

[0066] The conditional switching cancellation or modification command includes the conditional allocation ID of the third network node;

[0067] Send a switch success message.

[0068] Optionally, the method further comprises at least one of the following:

[0069] The handover success message is sent by the second network node based on the first information;

[0070] The handover success message includes information of the second network node;

[0071] The first information is a handover completion message sent by the terminal device to the second network node;

[0072] The first information includes information of the source node;

[0073] The first network node is a network node that initiates continuous conditional switching;

[0074] The second network node is a network node where the candidate cell selected for conditional handover of the terminal is located;

[0075] The second network node belongs to a set of candidate network nodes;

[0076] The third network node belongs to a set of candidate network nodes;

[0077] The handover success message is received by the source node to which the terminal device accesses;

[0078] The handover success message is forwarded by the first network node to the source node accessed by the terminal device;

[0079] The handover success message is received by all candidate network nodes.

[0080] The present application also provides a processing device, comprising:

[0081] The receiving module is used to receive a condition switching cancellation or modification command.

[0082] The present application also provides a processing device, comprising:

[0083] The sending module is used to send a conditional switching cancellation or modification command to the terminal device.

[0084] The present application also provides a processing device, comprising:

[0085] The sending module is used to send a conditional switching cancellation or modification command so that the terminal device receives the conditional switching cancellation or modification command.

[0086] The present application also provides a processing device, comprising:

[0087] The sending module is used to send a conditional switching cancellation or modification command so that the terminal device receives the conditional switching cancellation or modification command, and the conditional switching cancellation or modification command is sent by the third network node.

[0088] The present application also provides a communication device, comprising: a memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program implements the steps of any of the above-described processing methods when executed by the processor.

[0089] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified in the context.

[0090] The present application also provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the above-described processing methods are implemented.

[0091] The technical solution of the present application is aimed at the selective activation MCG (subsequent CHO) scenario. The terminal device receives the conditional handover cancellation or modification command sent by the source node. Through this solution, the conditional handover cancellation or modification command of a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0093] FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0094] FIG2 is a diagram of a communication network system architecture provided by an embodiment of the present application;

[0095] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0096] FIG4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0097] FIG5 is a schematic diagram of the signaling interaction process in the subsequent CHO preparation phase and the initial CHO phase involved in the processing method embodiment of the present application;

[0098] FIG6 is a flow chart of a processing method according to the first embodiment of the present application;

[0099] FIG7 is a schematic flow chart of a processing method according to a second embodiment of the present application;

[0100] FIG8 is a schematic diagram of a signaling interaction flow of a processing method according to a third embodiment of the present application;

[0101] FIG9 is a schematic diagram of a signaling interaction flow of a processing method according to a fourth embodiment of the present application;

[0102] FIG10 is a schematic diagram of a signaling interaction flow of a processing method according to a fifth embodiment of the present application;

[0103] FIG11 is a schematic flow chart of a processing method according to a sixth embodiment of the present application;

[0104] FIG12 is a flow chart of a processing method according to a seventh embodiment of the present application;

[0105] FIG13 is a schematic diagram of the interaction flow between a network device and a terminal device according to a processing method according to an eighth embodiment of the present application;

[0106] FIG14 is a first structural diagram of a processing device provided in an embodiment of the present application;

[0107] FIG15 is a second structural diagram of a processing device provided in an embodiment of the present application;

[0108] FIG16 is a third structural diagram of a processing device provided in an embodiment of the present application;

[0109] FIG17 is a fourth structural diagram of a processing device provided in an embodiment of the present application;

[0110] FIG18 is a schematic diagram of the structure of the communication device provided in an embodiment of the present application.

[0111] The purpose of this application, its features, and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and the accompanying text are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of this application to those skilled in the art by reference to specific embodiments.

[0112] Implementation Methods of the Application

[0113] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0114] It should be noted that, in this document, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element, and / or, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0115] 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 solely to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, 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 term "if," as used herein, may be interpreted as "upon," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the recited features, steps, operations, elements, components, items, types, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used herein, may be interpreted as inclusive, meaning any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”; and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0116] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0117] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0118] It should be noted that in this article, step codes such as S1 and S2 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial restriction on the order. When implementing the step, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the scope of protection of this application.

[0119] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0120] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0121] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified based on the context.

[0122] The terminal device may be implemented in various forms. For example, the terminal device described in this application may include intelligent terminal devices such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and other fixed terminal devices such as digital TVs and desktop computers.

[0123] The subsequent description will be made using a mobile terminal as an example. Those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the configuration according to the embodiments of the present application can also be applied to fixed-type terminal devices.

[0124] Please refer to Figure 1, which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application. The mobile terminal 100 may include components such as 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. Those skilled in the art will understand that the mobile terminal structure shown in Figure 1 does not limit the mobile terminal. The mobile terminal may include more or fewer components than shown, or may combine certain components, or arrange the components differently.

[0125] The following is a detailed introduction to the various components of the mobile terminal in conjunction with Figure 1:

[0126] The RF unit 101 can be used to send and receive information or receive signals during calls. Specifically, it receives downlink information from the base station and transmits it to the processor 110 for processing. It also transmits uplink data to the base station. Typically, the RF unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and / or other components. Furthermore, the RF unit 101 can communicate with the network and other devices via wireless communication. The above-mentioned wireless communications can 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, etc.

[0127] WiFi is a short-range wireless transmission technology. A mobile terminal, through WiFi module 102, enables users to send and receive emails, browse web pages, and access streaming media, providing wireless broadband Internet access. Although FIG1 illustrates WiFi module 102, it is understood that it is not a required component of the mobile terminal and can be omitted as needed without altering the essence of the invention.

[0128] The audio output unit 103 can convert audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Furthermore, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, or the like.

[0129] 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 captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the GPU 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the RF unit 101 or the WiFi module 102. The microphone 1042 may receive sound (audio data) in operating modes such as a phone call mode, a recording mode, and a voice recognition mode, and may process such sound into audio data. In the phone call mode, the processed audio (voice) data may be converted into a format that can be transmitted to a mobile communication base station via the RF unit 101. The microphone 1042 may 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.

[0130] 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 brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be described here.

[0131] 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.

[0132] The user input unit 107 can be used to receive input digital or character information and generate key signal input related to user settings and function control of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any other suitable object or accessory on or near the touch panel 1071) and drive corresponding connected devices according to a pre-set program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch direction and detects the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 110. It can also receive and execute commands sent by the processor 110. And / or, the 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 further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power keys, etc.), a trackball, a mouse, a joystick, etc., and the specifics are not limited here.

[0133] Optionally, the touch panel 1071 may overlay 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. The processor 110 then provides a corresponding visual output on the display panel 1061 based on the type of touch event. Although in FIG1 , the touch panel 1071 and the display panel 1061 are shown as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, which is not limited to this specific embodiment.

[0134] The interface unit 108 serves as an interface through which at least one external device can be connected to the 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, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

[0135] Memory 109 can be used to store software programs and various data. Memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store an operating system and at least one application required for a function (such as a sound playback function or an image playback function); the data storage area may store data generated based on the use of the mobile phone (such as audio data, a phone book, etc.). Furthermore, / or, memory 109 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0136] Processor 110 is the control center of the mobile terminal, connecting all components of the mobile terminal using various interfaces and circuits. By running or executing software programs and / or modules stored in memory 109 and accessing data stored in memory 109, it executes various functions of the mobile terminal and processes data, thereby providing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, processor 110 may integrate an application processor and a modem processor. Optionally, the application processor primarily handles the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 110.

[0137] The mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0138] Although not shown in FIG. 1 , the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail here.

[0139] To facilitate understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based is described below.

[0140] Please refer to Figure 2, which is a communication network system architecture diagram provided in an embodiment of the present application. The communication network system is an NR (New Radio) system of universal mobile communication technology. The NR system includes UE (User Equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, EPC (Evolved Packet Core) 203 and the operator's IP service 204, which are connected in sequence.

[0141] Optionally, UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.

[0142] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 . Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface). eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide access from UE 201 to EPC 203 .

[0143] EPC 203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gate Way) 2034, a PGW (PDN Gate Way) 2035, and a PCRF (Policy and Charging Rules Function) 2036. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, providing bearer and connection management. HSS 2032 provides registers for managing functions such as the Home Location Register (not shown) and stores user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, and it selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0144] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0145] Although the above introduction takes 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 can also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., which are not limited here.

[0146] FIG3 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 principles and beneficial effects are similar and will not be repeated here.

[0147] 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.

[0148] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application. Network node 150 includes: a memory 1501 and a processor 1502. Memory 1501 is used to store program instructions, and processor 1502 is used to call the program instructions in memory 1501 to execute the steps performed by the first node in the first embodiment of the above method. The implementation principles and beneficial effects are similar and will not be repeated here.

[0149] 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.

[0150] The integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The software function modules stored in a storage medium include a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute some of the steps of the methods of various embodiments of the present application.

[0151] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. 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 storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. 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 includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive solid state disk, SSD), etc.

[0152] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0153] Technical terms involved in this embodiment:

[0154] CHO:Conditional HandOver,conditional switching;

[0155] PDCP SN: Packet Data Convergence Protocol Sequence Number, Packet Data Convergence Protocol Sequence Number;

[0156] MCG: Master Cell Group, main cell group;

[0157] subsequent CHO: continuous or subsequent condition switching;

[0158] HO Req: HandOver Request, handover request;

[0159] HO Req ACK: HandOver Request ACKnowledge, handover request confirmation;

[0160] RRC: Radio Resource Control;

[0161] Reconfiguration: Reconfiguration.

[0162] 5 , which is a schematic diagram of the signaling interaction process in the subsequent CHO preparation phase and the initial CHO phase involved in the processing method embodiment of the present application.

[0163] As shown in Figure 5, the network system architecture includes: a terminal device (UE), an initial gNB, a target gNB, and other potential target gNBs in the candidate network node set. Optionally, the subsequent CHO preparation phase and the initial CHO phase may include:

[0164] In step 1, the source gNB decides to use selective MCG activation. Selective MCG activation means that after performing CHO, the terminal device does not release the CHO configuration and continues to evaluate CHO conditions for other candidate cells. The source gNB that initiates selective MCG activation is called the initial gNB. Selective MCG activation can also be called subsequent CHO.

[0165] In step 2, the source gNB sends a HO Req message (Handover Request message) to one or more candidate cells of each candidate gNB. The HO Req message indicates that the request is for a subsequent CHO. The HO Req message may also include information about candidate cells prepared by other candidate gNBs (e.g., cell ID, PCI, SSB information, conditional reconfiguration ID, and NG-RAN node UE XnAP ID, etc.).

[0166] Step 3: The candidate gNB sends a HO Req ACK message (Handover Request Acknowledgement message) to the source gNB. The HO Req ACK message contains the candidate cell condition configuration and the execution conditions of the subsequent CHO candidate cell.

[0167] Step 4: If there are candidate cells of other candidate gNBs for which subsequent CHO execution conditions have not been prepared by other candidate gNBs, the source gNB sends information about other subsequent CHO candidate cells (such as cell ID, PCI, SSB information, conditional reconfiguration ID, Xn interface identification information of the terminal device at other candidate gNB nodes, NG-RAN node UE XnAP ID, etc.) to each candidate cell / candidate gNB. The candidate cell / candidate gNB generates CHO execution conditions to other candidate cells and sends them to the source gNB.

[0168] In step 5, the source gNB sends an RRCReconfiguration message to the UE. The RRCReconfiguration message includes the configuration of the subsequent CHO candidate cell and the execution conditions. The UE sends an RRCReconfigurationComplete message to the source gNB.

[0169] In step 5a, the UE begins evaluating the CHO execution conditions for subsequent CHO candidate cells. When a candidate cell meets the execution conditions, the UE applies the corresponding candidate cell configuration and sends an RRCReconfigurationComplete message to the target gNB, indicating that the UE is switching from the initial gNB to the subsequent CHO candidate cell. The candidate cell sends a Handover Success message to the initial gNB to inform the UE of successful access to the target cell. The initial gNB sends an SN STATUS TRANSFER message to the target gNB. The UE does not delete the configuration of the subsequent CHO candidate cell and continues evaluating the CHO execution conditions for the subsequent CHO candidate cell.

[0170] Based on the signaling interaction processes in the subsequent CHO preparation phase and the initial CHO phase, an embodiment of the processing method of the present application is proposed.

[0171] First embodiment

[0172] 6 , which is a flow chart of a processing method according to a first embodiment of the present application, provides a processing method that can be applied to a terminal device (such as a mobile phone). The method includes the following steps:

[0173] S20, the terminal device receives a condition switching cancellation or modification command.

[0174] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0175] In scenarios supporting selective activation of MCG (Subsequent CHO), when a terminal device is performing subsequent CHO and a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO procedure. However, by this time, the terminal device may have already been switched to another gNB. Existing protocols do not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0176] In this embodiment, the conditional switching cancellation or modification command is sent by the source node to the terminal device.

[0177] Optionally, the source node is the source node (or source gNB) accessed by the terminal device.

[0178] Optionally, after receiving the conditional switching cancellation or modification command, the source node sends the conditional switching cancellation or modification command to the terminal device.

[0179] Optionally, the conditional handover cancellation or modification command is sent directly by the third network node to the source node.

[0180] Optionally, the conditional handover cancellation or modification command is sent by the third network node to the first network node, and is forwarded by the first network node to the source node.

[0181] Optionally, the conditional handover cancellation or modification command is sent by the third network node to all candidate network nodes.

[0182] Optionally, the candidate network nodes include a source node and / or a first network node.

[0183] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0184] Optionally, the first network node is an initial base station (or initial gNB).

[0185] Optionally, the first network node is a network node that initiates continuous conditional switching.

[0186] Optionally, the third network node belongs to a candidate network node set.

[0187] Optionally, the third network node is another candidate network node in the candidate network node set.

[0188] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the terminal device receives the conditional handover cancellation or modification command sent by the source node. Through this solution, the conditional handover cancellation or modification command of a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device switching.

[0189] Optionally, before step S20, the method further includes the steps of:

[0190] S0. The terminal device sends first information, so that the second network node sends a switching success message based on the first information and the source node receives the switching success message.

[0191] Optionally, the second network node is a network node where the candidate cell selected for conditional switching of the terminal device is located.

[0192] Optionally, the second network node belongs to a candidate network node set.

[0193] Optionally, the second network node is a target base station (or target gNB).

[0194] Optionally, during the subsequent CHO execution process, after the terminal device successfully connects to the target cell, the terminal device continues to evaluate the CHO execution conditions of the subsequent CHO candidate cells. When a candidate cell meets the execution conditions, the terminal device applies the conditional configuration of the corresponding candidate cell and sends an RRCReconfigurationComplete message to the target gNB (i.e., the second network node).

[0195] Optionally, the first information is a switching completion message sent by the terminal device to the second network node.

[0196] Optionally, the first information includes information of a source node.

[0197] Optionally, the information of the source node is used by the second network node to confirm the source node to which the terminal device accesses.

[0198] Optionally, the handover success message includes information of the second network node.

[0199] Optionally, the second network node in the candidate network node set directly sends or forwards the handover success message through the first network node based on the first information.

[0200] Optionally, the source node receives a handover success message sent by a second network node in the candidate network node set based on the first information.

[0201] Optionally, the source node receives a handover success message forwarded by the first network node and sent by the second network node in the candidate network node set based on the first information.

[0202] Optionally, the handover success message is received by all candidate network nodes.

[0203] Optionally, the candidate network nodes include a source node and / or a first network node.

[0204] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the terminal device sends the first information so that the second network node sends a switching success message based on the first information and the source node receives the switching success message. Through this solution, the source gNB can be notified that the terminal device has successfully switched to the target cell, thereby enabling the first network node or the network nodes in the candidate network node set to know the node to which the terminal device is connected, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device switching.

[0205] Second embodiment

[0206] 7 , which is a flow chart of a processing method according to a second embodiment of the present application, the processing method according to the embodiment of the present application can be applied to a network device (such as a base station, specifically the source node in FIG. 5 ). The processing method includes the following steps:

[0207] S10, the source node sends a conditional switching cancellation or modification command to the terminal device.

[0208] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0209] In scenarios supporting selective activation of MCG (Subsequent CHO), when a terminal device is performing subsequent CHO and a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO procedure. However, by this time, the terminal device may have already been switched to another gNB. Existing protocols do not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0210] In this embodiment, the conditional switching cancellation or modification command is sent by the source node to the terminal device.

[0211] Optionally, the source node is the source node (or source gNB) accessed by the terminal device.

[0212] Optionally, after receiving the conditional switching cancellation or modification command, the source node sends the conditional switching cancellation or modification command to the terminal device.

[0213] Optionally, the conditional handover cancellation or modification command is sent directly by the third network node to the source node.

[0214] Optionally, the conditional handover cancellation or modification command is sent by the third network node to the first network node, and is forwarded by the first network node to the source node.

[0215] Optionally, the conditional handover cancellation or modification command is sent by the third network node to all candidate network nodes.

[0216] Optionally, the candidate network nodes include a source node and / or a first network node.

[0217] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0218] Optionally, the first network node is an initial base station (or initial gNB).

[0219] Optionally, the first network node is a network node that initiates continuous conditional switching.

[0220] Optionally, the third network node belongs to a candidate network node set.

[0221] Optionally, the third network node is another candidate network node in the candidate network node set.

[0222] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the source node sends a conditional handover cancellation or modification command to the terminal device. Through this solution, the conditional handover cancellation or modification command of a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device switching.

[0223] Optionally, in scenarios supporting selective MCG activation (also known as subsequent CHO), when a terminal device performs subsequent CHO, the terminal device autonomously evaluates the execution conditions and selects a candidate cell that meets the execution conditions. Therefore, the target gNB is unaware of the terminal device's source gNB and only knows the gNB that initially initiated the CHO process. Consequently, the source gNB cannot be notified of the terminal device's successful handover to the target cell. This results in the terminal device being unable to support subsequent CHO, which in turn reduces the reliability of the terminal device's handover.

[0224] The solution of this embodiment can enable the source node to receive a handover success message.

[0225] Optionally, the method further comprises the steps of:

[0226] S1. A source node receives a handover success message, where the handover success message is directly sent by a second network node based on first information or forwarded by the first network node from the second network node.

[0227] Optionally, the second network node is a network node where the candidate cell selected for conditional switching of the terminal device is located.

[0228] Optionally, the second network node belongs to a candidate network node set.

[0229] Optionally, the second network node is a target base station (or target gNB).

[0230] Optionally, after the terminal device successfully connects to the target cell, it continues to evaluate the CHO execution conditions of subsequent CHO candidate cells. When a candidate cell meets the execution conditions, the terminal device applies the conditional configuration of the corresponding candidate cell and sends an RRCReconfigurationComplete message to the target gNB (i.e., the second network node).

[0231] Optionally, the first information is a switching completion message sent by the terminal device to the second network node.

[0232] Optionally, the first information includes information of a source node.

[0233] Optionally, the information of the source node is used by the second network node to confirm the source node to which the terminal device accesses.

[0234] Optionally, the handover success message includes information of the second network node.

[0235] Optionally, the source node receives a handover success message sent by a second network node in the candidate network node set based on the first information.

[0236] Optionally, the source node receives a handover success message forwarded by the first network node and sent by the second network node in the candidate network node set based on the first information.

[0237] Therefore, for the selective activation of MCG (subsequent CHO) scenario, the source node (source gNB) to which the terminal device accesses receives a handover success message. The handover success message is directly sent by the second network node (target gNB) based on the first information or forwarded from the second network node by the first network node (initial gNB). Through this solution, the source gNB can be notified that the terminal device has successfully switched to the target cell, thereby enabling the first network node or the network nodes in the candidate network node set to know the cell to which the terminal device accesses, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device handover.

[0238] Optionally, the method further comprises:

[0239] The source node receives the handover request message.

[0240] Optionally, the handover request message is sent by the first network node to the set of candidate network nodes.

[0241] Optionally, the handover request message is used to request continuous conditional handover.

[0242] Optionally, the handover request message includes at least one of the following: cell ID information of the candidate cell, PCI information of the candidate cell, SSB information of the candidate cell, conditional reconfiguration ID of the candidate cell, and Xn interface identification information of the terminal device at the candidate node.

[0243] Optionally, the method further comprises:

[0244] The source node sends sequence number state transfer information to the second network node.

[0245] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, not only can the source gNB be notified that the terminal device has successfully switched to the target cell, but the terminal device can also receive the conditional handover cancellation or modification command sent by the source node. Through this solution, subsequent CHO can be supported without the need for RRC reconfiguration, thereby improving the reliability of terminal device handover.

[0246] Third embodiment

[0247] Referring to FIG. 8 , FIG. 8 is a schematic diagram of the signaling interaction flow of the processing method shown in the third embodiment of the present application.

[0248] Based on any of the above embodiments of the present application, this embodiment further discloses the processing method in the aforementioned embodiment, mainly explaining how to send a conditional switching cancellation or modification command of a candidate cell to a terminal device in a selective activation MCG (subsequent CHO) scenario.

[0249] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0250] During subsequent CHO, when a candidate cell meets the conditions, the terminal applies the conditions for the candidate cell and sends a handover complete message to the second network node (i.e., the target gNB). The source gNB receives the handover complete message through the second network node, confirming that the terminal has successfully connected to the target cell.

[0251] Optionally, when a terminal device is performing a subsequent CHO, if a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO process. However, the terminal device may have already been switched to another gNB at this time. The existing protocol does not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0252] In this embodiment, the conditional switching cancel / modify command is sent to the terminal device through the source node.

[0253] Optionally, the conditional handover cancellation or modification command is sent directly by the third network node to the source node.

[0254] Optionally, the source node is the source node (or source gNB) accessed by the terminal device, that is, the serving gNB where the terminal device resides.

[0255] Optionally, the third network node belongs to a candidate network node set.

[0256] Optionally, each candidate gNB needs to know the serving gNB where the terminal device resides.

[0257] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0258] As shown in FIG8 , as an implementation manner, the signaling interaction process of the processing method of this embodiment includes:

[0259] Steps 1 to 5a;

[0260] Optionally, steps 1 to 5a are the same as steps 1 to 5a in the selective activation of MCG candidate cell configuration preparation process and initial CHO shown in FIG5 .

[0261] Step 6: During the Subsequent CHO execution process, the terminal device continues to evaluate the CHO execution conditions of the subsequent CHO candidate cells.

[0262] In step 7, when a candidate cell meets the execution conditions, the terminal device applies the conditional configuration of the corresponding candidate cell and sends an RRCReconfigurationComplete message (i.e., handover completion message) to the target gNB.

[0263] In step 8, the target gNB sends a HANDOVER SUCCESS message (i.e., a handover success message) to all candidate gNBs (including the initial gNB and the source gNB) to inform the terminal device that it has successfully accessed the target cell.

[0264] Step 9: The source gNB sends an SN STATUS TRANSFER message to the target gNB.

[0265] Step 10: The terminal device continues to evaluate the CHO execution conditions of the candidate cells and repeats the processes in steps 6 to 9.

[0266] In step 11, the candidate gNB decides to cancel / modify the subsequent CHO configuration and sends a CONDITIONAL HANDOVER CANCEL / MODIFY command to the source gNB to request cancellation of the prepared CHO.

[0267] Step 12: The source gNB sends an RRCReconfiguration request to the terminal device to cancel / modify the conditional configuration of the candidate cell.

[0268] In step 13, the terminal device deletes / modifies the conditional configuration of the corresponding candidate cell and responds with an RRCReconfigurationComplete message to the source gNB.

[0269] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the terminal device receives the conditional handover cancellation or modification command sent by the source node. Optionally, the conditional handover cancellation or modification command is sent directly to the source node by the third network node. Through this solution, the conditional handover cancellation or modification command of a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device switching.

[0270] Fourth embodiment

[0271] Referring to FIG. 9 , FIG. 9 is a schematic diagram of the signaling interaction flow of the processing method shown in the fourth embodiment of the present application.

[0272] Based on any of the above embodiments of the present application, this embodiment further discloses the processing method in the aforementioned embodiment, mainly explaining how to send a conditional switching cancellation or modification command of a candidate cell to a terminal device in a selective activation MCG (subsequent CHO) scenario.

[0273] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0274] During subsequent CHO, when a candidate cell meets the conditions, the terminal applies the conditions for the candidate cell and sends a handover complete message to the second network node (i.e., the target gNB). The source gNB receives the handover complete message through the second network node, confirming that the terminal has successfully connected to the target cell.

[0275] Optionally, when a terminal device is performing a subsequent CHO, if a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO process. However, the terminal device may have already been switched to another gNB at this time. The existing protocol does not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0276] In this embodiment, the conditional switching cancel / modify command is sent to the terminal device through the source node.

[0277] Optionally, the conditional handover cancellation or modification command is forwarded by the first network node from the third network node, that is, the conditional handover cancellation or modification command is received by the first network node from the third network node and forwarded to the source node.

[0278] Optionally, the source node is the source node (or source gNB) accessed by the terminal device.

[0279] Optionally, the first network node is an initial base station (or initial gNB).

[0280] Optionally, the first network node is a network node that initiates continuous conditional switching.

[0281] Optionally, the first network node needs to know the serving gNB where the terminal device resides.

[0282] Optionally, the third network node belongs to a candidate network node set.

[0283] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0284] As shown in FIG9 , as an implementation manner, the signaling interaction process of the processing method of this embodiment includes:

[0285] Steps 1 to 5a;

[0286] Optionally, steps 1 to 5a are the same as steps 1 to 5a in the selective activation of MCG candidate cell configuration preparation process and initial CHO shown in FIG5 .

[0287] Step 6: During the Subsequent CHO execution process, the terminal device starts to evaluate the CHO execution conditions of the subsequent CHO candidate cells.

[0288] In step 7, when a candidate cell meets the execution conditions, the terminal device applies the conditional configuration of the corresponding candidate cell and sends RRCReconfigurationComplete to the target gNB.

[0289] In step 8, the target gNB sends a HANDOVER SUCCESS message to the initial gNB to inform the terminal device that it has successfully accessed the target cell. The initial gNB then notifies the source gNB that the terminal device has successfully accessed the target cell. Optionally, the initial gNB knows the source gNB of the terminal device.

[0290] Step 9: The source gNB sends an SN STATUS TRANSFER message to the target gNB.

[0291] Step 10: The terminal device continues to evaluate the CHO execution conditions of the candidate cells and repeats the process in step 6.

[0292] In step 11, the candidate gNB decides to cancel / modify the subsequent CHO configuration and sends a CONDITIONAL HANDOVER CANCEL / MODIFY command to the initial gNB to request cancellation / modification of the prepared CHO.

[0293] In step 12, the initial gNB sends a CHO cancel / modify command for the corresponding candidate cell to the source gNB. The command carries the conditional reconfiguration ID of the corresponding candidate cell.

[0294] Step 13: The source gNB sends an RRCReconfiguration request to the terminal device to cancel / modify the conditional configuration of the candidate cell.

[0295] In step 14, the terminal device deletes / modifies the conditional configuration of the corresponding candidate cell and responds with an RRCReconfigurationComplete message to the source gNB.

[0296] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the terminal device receives a conditional handover cancellation or modification command sent by the source node. Optionally, the conditional handover cancellation or modification command is received by the first network node from a third network node and forwarded to the source node. Through this solution, a conditional handover cancellation or modification command for a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device handover.

[0297] Fifth embodiment

[0298] Referring to FIG. 10 , FIG. 10 is a schematic diagram of the signaling interaction flow of the processing method shown in the fifth embodiment of the present application.

[0299] Based on any of the above embodiments of the present application, this embodiment further discloses the processing method in the aforementioned embodiment, mainly explaining how to send a conditional switching cancellation or modification command of a candidate cell to a terminal device in a selective activation MCG (subsequent CHO) scenario.

[0300] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0301] During subsequent CHO, when a candidate cell meets the conditions, the terminal applies the conditions for the candidate cell and sends a handover complete message to the second network node (i.e., the target gNB). The source gNB receives the handover complete message through the second network node, confirming that the terminal has successfully connected to the target cell.

[0302] Optionally, when a terminal device is performing a subsequent CHO, if a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO process. However, the terminal device may have already been switched to another gNB at this time. The existing protocol does not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0303] In this embodiment, the conditional switching cancel / modify command is sent to the terminal device through the source node.

[0304] Optionally, the conditional handover cancellation or modification command is sent by the third network node to all candidate network nodes.

[0305] Optionally, the candidate network nodes include a source node and / or a first network node.

[0306] Optionally, the source node is the source node (or source gNB) accessed by the terminal device.

[0307] Optionally, the first network node is an initial base station (or initial gNB).

[0308] Optionally, the first network node is a network node that initiates continuous conditional switching.

[0309] Optionally, the second network node is a network node where the candidate cell selected for conditional switching of the terminal device is located.

[0310] Optionally, the second network node is a target base station (or target gNB).

[0311] Optionally, the second network node belongs to a candidate network node set.

[0312] Optionally, the third network node belongs to a candidate network node set.

[0313] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0314] As shown in FIG10 , the signaling interaction process of the processing method of this embodiment includes:

[0315] Steps 1 to 5a;

[0316] Optionally, steps 1 to 5a are the same as steps 1 to 5a in the selective activation of MCG candidate cell configuration preparation process and initial CHO shown in FIG5 .

[0317] The subsequent CHO process in steps 6 to 10 is the same as that in the fifth embodiment or the sixth embodiment.

[0318] In step 11, the candidate gNB decides to cancel / modify the subsequent CHO and sends a CONDITIONAL HANDOVER CANCEL / MODIFY command to all candidate gNBs (including the initial gNB and the source gNB) to request cancellation of the prepared CHO.

[0319] Step 12: The source gNB sends an RRCReconfiguration request to the terminal device to cancel / modify the conditional configuration of the candidate cell.

[0320] In step 13, the terminal device deletes / modifies the conditional configuration of the corresponding candidate cell and responds with an RRCReconfigurationComplete message to the source gNB.

[0321] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the terminal device receives a conditional handover cancel or modify command sent by the source node. Optionally, the conditional handover cancel or modify command is sent by a third network node to all candidate network nodes (including the initial gNB and the source gNB). Through this solution, a conditional handover cancel or modify command for a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device handovers.

[0322] Sixth embodiment

[0323] 11 is a flow chart of a processing method according to a sixth embodiment of the present application. The processing method according to the embodiment of the present application can be applied to a network device (such as a base station, specifically other candidate network nodes in FIG. 5 , i.e., the third network node). The processing method includes the following steps:

[0324] S12: The third network node sends a conditional handover cancel or modify command, so that the terminal device receives the conditional handover cancel or modify command.

[0325] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0326] In scenarios supporting selective activation of MCG (Subsequent CHO), when a terminal device is performing subsequent CHO and a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO procedure. However, by this time, the terminal device may have already been switched to another gNB. Existing protocols do not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0327] In this embodiment, the conditional handover cancel or modify command is sent through the third network node, so that the terminal device receives the conditional handover cancel or modify command.

[0328] Optionally, the conditional switching cancellation or modification command is sent by the source node to the terminal device.

[0329] Optionally, the source node is the source node (or source gNB) accessed by the terminal device.

[0330] Optionally, after receiving the conditional switching cancellation or modification command, the source node sends the conditional switching cancellation or modification command to the terminal device.

[0331] Optionally, the conditional handover cancellation or modification command is sent directly by the third network node to the source node.

[0332] Optionally, the conditional handover cancellation or modification command is sent by the third network node to the first network node, and is forwarded by the first network node to the source node.

[0333] Optionally, the conditional handover cancellation or modification command is sent by the third network node to all candidate network nodes.

[0334] Optionally, the candidate network nodes include a source node and / or a first network node.

[0335] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0336] Optionally, the first network node is an initial base station (or initial gNB).

[0337] Optionally, the first network node is a network node that initiates continuous conditional switching.

[0338] Optionally, the third network node belongs to a candidate network node set.

[0339] Optionally, the third network node is another candidate network node in the candidate network node set.

[0340] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the third network node sends a conditional handover cancellation or modification command so that the terminal device receives the conditional handover cancellation or modification command. Through this solution, the conditional handover cancellation or modification command of a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device switching.

[0341] Seventh embodiment

[0342] Referring to FIG. 12 , FIG. 12 is a flow chart illustrating a processing method according to a seventh embodiment of the present application. The processing method according to the embodiment of the present application can be applied to a network device (such as a base station, specifically a first network node, i.e., the initial gNB in ​​FIG. 5 ). The processing method includes the following steps:

[0343] S120: The first network node sends a conditional handover cancel or modify command, so that the terminal device receives the conditional handover cancel or modify command, where the conditional handover cancel or modify command is sent by a third network node.

[0344] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0345] In scenarios supporting selective activation of MCG (Subsequent CHO), when a terminal device is performing subsequent CHO and a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO procedure. However, by this time, the terminal device may have already been switched to another gNB. Existing protocols do not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0346] In this embodiment, the conditional handover cancel or modify command is sent by the first network node, so that the terminal device receives the conditional handover cancel or modify command.

[0347] Optionally, the conditional switching cancellation or modification command is sent by the source node to the terminal device.

[0348] Optionally, the source node is the source node (or source gNB) accessed by the terminal device.

[0349] Optionally, the conditional handover cancellation or modification command is sent by the third network node to the first network node, and is forwarded by the first network node to the source node.

[0350] Optionally, the first network node is an initial base station (or initial gNB).

[0351] Optionally, the first network node is a network node that initiates continuous conditional switching.

[0352] Optionally, the third network node belongs to a candidate network node set.

[0353] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0354] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, the first network node sends a conditional handover cancellation or modification command so that the terminal device receives the conditional handover cancellation or modification command, and the conditional handover cancellation or modification command is sent by the third network node. Through this solution, the conditional handover cancellation or modification command of a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device switching.

[0355] Optionally, in scenarios supporting selective MCG activation (also known as subsequent CHO), when a terminal device performs subsequent CHO, the terminal device autonomously evaluates the execution conditions and selects a candidate cell that meets the execution conditions. Therefore, the target gNB is unaware of the terminal device's source gNB and only knows the gNB that initially initiated the CHO process. Consequently, the source gNB cannot be notified of the terminal device's successful handover to the target cell. This results in the terminal device being unable to support subsequent CHO, which in turn reduces the reliability of the terminal device's handover.

[0356] The solution of this embodiment can enable the source node to receive a handover success message.

[0357] Optionally, before step S120, the method further includes the steps of:

[0358] S011: The first network node sends a handover success message, so that the source node receives the handover success message, where the handover success message is sent by the second network node based on the first information.

[0359] Optionally, after the UE successfully connects to the target cell, it continues to evaluate the CHO execution conditions of subsequent CHO candidate cells. When a candidate cell meets the execution conditions, the UE applies the conditional configuration for the corresponding candidate cell and sends an RRCReconfigurationComplete message to the target gNB.

[0360] Optionally, the second network node is a target base station (or target gNB).

[0361] The second network node is a network node where the candidate cell selected for conditional handover of the terminal is located.

[0362] The second network node belongs to a set of candidate network nodes.

[0363] Optionally, the first information is a switching completion message sent by the terminal device to the second network node.

[0364] Optionally, the first information includes information of a source node.

[0365] Optionally, the information of the source node is used by the second network node to confirm the source node to which the terminal device accesses.

[0366] Optionally, the handover success message includes information of the second network node.

[0367] Optionally, the second network node sends a handover success message to the first network node based on the first information, and the first network node forwards the handover success message to the source node.

[0368] Optionally, before step S011, the method further includes at least one of the following:

[0369] The first network node sends a handover request message to each network node in the candidate network node set, optionally, the handover request message is used to request continuous conditional handover;

[0370] The first network node receives a handover request confirmation message sent by each network node in the candidate network node set;

[0371] The first network node determines or generates a conditional reconfiguration message and sends it to the terminal device;

[0372] The first network node receives a handover success message sent by the second network node based on the first information.

[0373] Optionally, the handover request message is sent by the first network node to the set of candidate network nodes.

[0374] Optionally, the handover request message is used to request continuous conditional handover.

[0375] Optionally, the handover request confirmation message includes conditional configurations for switching to other candidate cells.

[0376] Optionally, the handover request message includes at least one of the following: cell ID information of the candidate cell, PCI information of the candidate cell, SSB information of the candidate cell, conditional reconfiguration ID of the candidate cell, and Xn interface identification information of the terminal device at the candidate node.

[0377] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, not only can the source gNB be notified that the terminal device has successfully switched to the target cell, but the terminal device can also receive the conditional handover cancellation or modification command sent by the source node. Through this solution, subsequent CHO can be supported without the need for RRC reconfiguration, thereby improving the reliability of terminal device handover.

[0378] Eighth embodiment

[0379] 13 , which is a schematic diagram of an interaction flow between a network device and a terminal device according to a processing method according to an eighth embodiment, the eighth embodiment of the present application proposes a processing method, comprising the steps of:

[0380] S12, the third network node directly sends or forwards the conditional switching cancellation or modification command to the source node through the first network node;

[0381] S10, the source node sends a conditional switching cancellation or modification command to the terminal device;

[0382] S20, the terminal device receives a condition switching cancellation or modification command.

[0383] Optionally, this embodiment relates to a subsequent CHO execution process. Optionally, the process of the subsequent CHO preparation phase and the initial CHO phase can be shown in FIG5 .

[0384] During subsequent CHO, when a candidate cell meets the conditions, the terminal applies the conditions for the candidate cell and sends a handover complete message to the second network node (i.e., the target gNB). The source gNB receives the handover complete message through the second network node, confirming that the terminal has successfully connected to the target cell.

[0385] Optionally, when a terminal device is performing a subsequent CHO, if a candidate cell wants to cancel or modify a prepared conditional handover, the candidate gNB needs to send a conditional handover cancel / modify command to the source gNB that initiated the CHO process. However, the terminal device may have already been switched to another gNB at this time. The existing protocol does not clearly define how to send the conditional handover cancel / modify command for a candidate cell to the terminal device, which may result in the terminal device being unable to support subsequent CHO.

[0386] In this embodiment, the conditional switching cancel / modify command is sent to the terminal device through the source node.

[0387] Optionally, the source node is the source node (or source gNB) accessed by the terminal device.

[0388] Optionally, the conditional handover cancellation or modification command is sent directly to the source node by a third network node in the candidate network node set.

[0389] Optionally, the conditional handover cancellation or modification command is received by the first network node from the third network node and forwarded to the source node.

[0390] Optionally, the conditional handover cancellation or modification command is sent by the third network node to all candidate network nodes.

[0391] Optionally, the candidate network nodes include a source node and / or a first network node.

[0392] Optionally, the first network node is an initial base station (or initial gNB).

[0393] Optionally, the first network node is a network node that initiates continuous conditional switching.

[0394] Optionally, the third network node belongs to a candidate network node set.

[0395] Optionally, the conditional handover cancellation or modification command includes a conditional allocation ID of the third network node.

[0396] Therefore, for the selective activation of MCG (subsequent CHO) scenario, the terminal device receives the conditional handover cancellation or modification command sent by the source node. Through this solution, the conditional handover cancellation or modification command of a candidate cell can be sent to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device handover.

[0397] Optionally, in scenarios supporting selective MCG activation (also known as subsequent CHO), when a terminal device performs subsequent CHO, the terminal device autonomously evaluates the execution conditions and selects a candidate cell that meets the execution conditions. Therefore, the target gNB is unaware of the terminal device's source gNB and only knows the gNB that initially initiated the CHO process. Consequently, the source gNB cannot be notified of the terminal device's successful handover to the target cell. This results in the terminal device being unable to support subsequent CHO, which in turn reduces the reliability of the terminal device's handover.

[0398] The solution of this embodiment can enable the source node to receive a handover success message.

[0399] Optionally, as shown in FIG13 , the method further includes the steps of:

[0400] S0. The terminal device sends first information, so that the second network node sends a switching success message based on the first information and the source node receives the switching success message.

[0401] S01: A second network node receives first information, and sends a handover success message based on the first information or forwards the handover success message through the first network node, so that a source node receives the handover success message.

[0402] S1. A source node receives a handover success message, where the handover success message is directly sent by a second network node based on first information or forwarded by the first network node from the second network node.

[0403] Optionally, the second network node is a network node where the candidate cell selected for conditional switching of the terminal device is located.

[0404] Optionally, the second network node belongs to a candidate network node set.

[0405] Optionally, the second network node is a target base station (or target gNB).

[0406] Optionally, after the terminal device successfully connects to the target cell, it continues to evaluate the CHO execution conditions of subsequent CHO candidate cells. When a candidate cell meets the execution conditions, the terminal device applies the conditional configuration of the corresponding candidate cell and sends an RRCReconfigurationComplete message to the target gNB (i.e., the second network node).

[0407] Optionally, the first information is a switching completion message sent by the terminal device to the second network node.

[0408] Optionally, the first information includes information of a source node.

[0409] Optionally, the information of the source node is used by the second network node to confirm the source node to which the terminal device accesses.

[0410] Optionally, the handover success message includes information of the second network node.

[0411] Optionally, the source node receives a handover success message sent by a second network node in the candidate network node set based on the first information.

[0412] Optionally, the source node receives a handover success message forwarded by the first network node and sent by the second network node in the candidate network node set based on the first information.

[0413] Optionally, the handover success message is received by all candidate network nodes.

[0414] Optionally, the candidate network nodes include a source node and / or a first network node.

[0415] Optionally, before the above step S0, the method further includes: the source node receiving a handover request message.

[0416] Optionally, the handover request message is sent by the first network node to the set of candidate network nodes.

[0417] Optionally, the handover request message is used to request continuous conditional handover.

[0418] Optionally, the handover request message includes at least one of the following: cell ID information of the candidate cell, PCI information of the candidate cell, SSB information of the candidate cell, conditional reconfiguration ID of the candidate cell, and Xn interface identification information of the terminal device at the candidate node.

[0419] Optionally, the source node sends sequence number state transfer information to the second network node.

[0420] Through the technical solution of this embodiment, for the selective activation of MCG (subsequent CHO) scenario, a terminal device receives a conditional handover cancellation or modification command sent by the source node. This solution can send a conditional handover cancellation or modification command for a candidate cell to the terminal device, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device handover. Optionally, the terminal device sends first information to cause the second network node to send a handover success message based on the first information and the source node to receive the handover success message. The second network node receives the first information and sends a handover success message based on the first information or forwards the handover success message through the first network node, so that the source node receives the handover success message. This notifies the source gNB that the terminal device has successfully handed over to the target cell, thereby supporting subsequent CHO without the need for RRC reconfiguration, thereby improving the reliability of terminal device handover.

[0421] Please refer to Figure 14, which is a schematic diagram of the structure of the processing device provided in the embodiment of the present application. The device can be installed in or is the terminal device (such as a mobile phone) in the above method embodiment. As shown in Figure 14, the processing device 140 includes:

[0422] The receiving module 1401 is configured to receive a condition switching cancellation or modification command.

[0423] Optionally, the device further comprises at least one of the following:

[0424] The conditional switching cancellation or modification command is sent by the source node to the terminal device;

[0425] The conditional switching cancellation or modification command is sent directly to the source node by the third network node;

[0426] The conditional handover cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node;

[0427] The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes;

[0428] The conditional handover cancel or modify command includes the conditional allocation ID of the third network node.

[0429] Optionally, the device further comprises:

[0430] The sending module is configured to send first information, so that the second network node sends a switching success message based on the first information and the source node receives the switching success message.

[0431] Optionally, the device further comprises at least one of the following:

[0432] The handover success message includes information of the second network node;

[0433] The first information is a handover completion message sent by the terminal device to the second network node;

[0434] The first information includes information of the source node;

[0435] The first network node is a network node that initiates continuous conditional switching;

[0436] The second network node is a network node where the candidate cell selected for conditional handover of the terminal is located;

[0437] The second network node belongs to a set of candidate network nodes;

[0438] The third network node belongs to a set of candidate network nodes;

[0439] The handover success message is received by the source node to which the terminal device accesses;

[0440] The handover success message is forwarded by the first network node to the source node accessed by the terminal device;

[0441] The handover success message is received by all candidate network nodes;

[0442] The candidate network nodes include a source node and / or a first network node.

[0443] Please refer to Figure 15, which is a second structural diagram of a processing device provided in an embodiment of the present application. The device can be installed in or be the network device in the above method embodiment. The network device can be a source node. As shown in Figure 15, the processing device 150 includes:

[0444] The sending module 1501 is used to send a conditional switching cancellation or modification command to the terminal device.

[0445] Optionally, the device further comprises at least one of the following:

[0446] Receive condition switching cancellation or modification command;

[0447] The conditional switching cancellation or modification command is sent directly to the source node by the third network node;

[0448] The conditional handover cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node;

[0449] The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes;

[0450] The conditional switching cancellation or modification command includes the conditional allocation ID of the third network node;

[0451] Receive a switching success message.

[0452] Optionally, the device further comprises at least one of the following:

[0453] The handover success message is directly sent by the second network node based on the first information;

[0454] The handover success message is forwarded by the first network node from the second network node;

[0455] The handover success message includes information of the second network node;

[0456] The first information is a handover completion message sent by the terminal device to the second network node;

[0457] The first information includes information of the source node;

[0458] The first network node is a network node that initiates continuous conditional switching;

[0459] The second network node is a network node where the candidate cell selected for conditional handover of the terminal is located;

[0460] The second network node belongs to a set of candidate network nodes;

[0461] The third network node belongs to a set of candidate network nodes;

[0462] The candidate network nodes include a source node and / or a first network node.

[0463] Please refer to Figure 16, which is a third structural diagram of a processing device provided in an embodiment of the present application. The device can be installed in or be the network device in the above method embodiment. The network device can be a third network node. As shown in Figure 16, the processing device 160 includes:

[0464] The sending module 1601 is configured to send a conditional switching cancellation or modification command, so that the terminal device receives the conditional switching cancellation or modification command.

[0465] Optionally, the device further comprises at least one of the following:

[0466] The conditional switching cancellation or modification command is sent by the source node to the terminal device;

[0467] The conditional switching cancellation or modification command is sent directly to the source node by the third network node;

[0468] The conditional handover cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node;

[0469] The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes;

[0470] The conditional handover cancel or modify command includes the conditional allocation ID of the third network node.

[0471] Optionally, the device further comprises at least one of the following:

[0472] The third network node belongs to a set of candidate network nodes;

[0473] The candidate network nodes include a source node and / or a first network node;

[0474] The first network node is a network node that initiates continuous conditional switching.

[0475] Please refer to Figure 17, which is a fourth structural diagram of a processing device provided in an embodiment of the present application. The device can be installed in or be the network device in the above method embodiment. The network device can be a first network node. As shown in Figure 17, the device 170 includes:

[0476] The sending module 1701 is configured to send a conditional handover cancellation or modification command, so that the terminal device receives the conditional handover cancellation or modification command, where the conditional handover cancellation or modification command is sent by a third network node.

[0477] Optionally, the device further comprises at least one of the following:

[0478] The conditional switching cancellation or modification command is sent by the source node to the terminal device;

[0479] The conditional handover cancellation or modification command is forwarded by the first network node to the source node;

[0480] The conditional switching cancellation or modification command includes the conditional allocation ID of the third network node;

[0481] Send a switch success message.

[0482] Optionally, the device further comprises at least one of the following:

[0483] The handover success message is sent by the second network node based on the first information;

[0484] The handover success message includes information of the second network node;

[0485] The first information is a handover completion message sent by the terminal device to the second network node;

[0486] The first information includes information of the source node;

[0487] The first network node is a network node that initiates continuous conditional switching;

[0488] The second network node is a network node where the candidate cell selected for conditional handover of the terminal is located;

[0489] The second network node belongs to a set of candidate network nodes;

[0490] The third network node belongs to a set of candidate network nodes;

[0491] The handover success message is received by the source node to which the terminal device accesses;

[0492] The handover success message is forwarded by the first network node to the source node accessed by the terminal device;

[0493] The handover success message is received by all candidate network nodes.

[0494] The processing device provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0495] Refer to Figure 18, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 18, the communication device 180 described in this embodiment can be the terminal device (or component that can be used for a terminal device) or network device (or component that can be used for a network device) mentioned in the aforementioned method embodiment. Communication device 180 can be used to implement the methods corresponding to the terminal device or network device described in the aforementioned method embodiment. For details, please refer to the description of the aforementioned method embodiment.

[0496] The communication device 180 may include one or more processors 1801, also referred to as processing units, which may implement certain control or processing functions. Processor 1801 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, while the central processing unit may be used to control the communication device, execute software programs, and process software program data.

[0497] Optionally, the processor 1801 may also store instructions 1803 or data (eg, intermediate data). Optionally, the instructions 1803 may be executed by the processor 1801, so that the communication device 180 executes the method corresponding to the terminal device or network device described in the above method embodiment.

[0498] Optionally, the communication device 180 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0499] Optionally, the communication device 180 may include one or more memories 1802 , on which instructions 1804 may be stored. The instructions may be executed on the processor 1801 , so that the communication device 180 performs the method described in the above method embodiment.

[0500] Optionally, data may also be stored in the memory 1802. The processor 1801 and the memory 1802 may be provided separately or integrated together.

[0501] Optionally, the communication device 180 may further include a transceiver 1805 and / or an antenna 1806. The processor 1801 may be referred to as a processing unit, and controls the communication device 180 (terminal device, core network device, or wireless access network device). The transceiver 1805 may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, and is used to implement the transceiver functions of the communication device 180.

[0502] Optionally, if the communication device 180 is used to implement operations corresponding to the terminal device in the above embodiments, for example, the transceiver 1805 may receive a conditional switching cancellation or modification command.

[0503] Optionally, the specific implementation process of the processor 1801 and the transceiver 1805 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0504] Optionally, if the communication device 180 is used to implement operations corresponding to the network devices in the above embodiments, for example, the transceiver 1805 may send a conditional switching cancellation or modification command.

[0505] Optionally, the specific implementation process of the processor 1801 and the transceiver 1805 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0506] The processor 1801 and transceiver 1805 described in this application can be implemented on an IC (Integrated Circuit), an analog integrated circuit, an RFIC (Radio Frequency Integrated Circuit), a mixed-signal integrated circuit, an ASIC (Application Specific Integrated Circuit), a PCB (Printed Circuit Board), an electronic device, etc. The processor 1801 and transceiver 1805 can also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N Metal-Oxide-Semiconductor), PMOS (Positive Channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0507] In this application, a communication device may be a terminal device (such as a mobile phone) or a network device (such as a base station), and the specific definition needs to be determined based on the context. In addition, 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, tablet computers, laptop computers, 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.

[0508] Although the communication device is described above by taking a terminal device or a network device as an example, the scope of the communication device described in this application is not limited to the above-mentioned terminal device or network device, and the structure of the communication device may not be limited to Figure 16. The communication device may be an independent device or may be part of a larger device.

[0509] An embodiment of the present application also provides a communication system, including: a terminal device as in any of the above embodiments; and a network device as in any of the above embodiments.

[0510] An embodiment of the present application also provides a communication device, including a memory and a processor, wherein a processing program is stored in the memory, and when the processing program is executed by the processor, the steps of the processing method in any of the above embodiments are implemented.

[0511] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified based on the context.

[0512] An embodiment of the present application further provides a storage medium having a processing program stored thereon. When the processing program is executed by a processor, the steps of the processing method in any of the above embodiments are implemented.

[0513] In the embodiments of the communication device and storage medium provided in the embodiments of the present application, all technical features of any of the above-mentioned processing method embodiments may be included. The expanded and explained contents of the specification are basically the same as those of the embodiments of the above-mentioned methods and will not be repeated here.

[0514] An embodiment of the present application further provides a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer executes the methods in the various possible implementation modes described above.

[0515] An embodiment of the present application also provides a chip, including a memory and a processor, wherein the memory is used to store computer programs, and the processor is used to call and run the computer programs from the memory, so that a device equipped with the chip executes the methods in the various possible implementation modes as described above.

[0516] It is understood that the above scenarios are merely examples and do not limit 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 appreciate that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application will also be applicable to similar technical problems.

[0517] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0518] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0519] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0520] In this application, the same or similar terminology, technical solutions and / or application scenario descriptions are generally only described in detail the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, for the same or similar terminology, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0521] In this application, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0522] The various technical features of the technical solution of this application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various 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 this application.

[0523] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course 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 the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the method of each embodiment of the present application.

[0524] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. 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 storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) 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 includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk (SSD)).

[0525] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A processing method, in, include: The terminal device receives a condition switching cancel or modify command.

2. The method according to claim 1, in, Also includes at least one of the following: The conditional switching cancellation or modification command is sent by the source node to the terminal device; The conditional switching cancellation or modification command is sent directly to the source node by the third network node; The conditional switching cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node; The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes; The conditional switching cancel or modify command includes the conditional allocation ID of the third network node.

3. The method according to claim 2, in, Also includes: The first information is sent, so that the second network node sends a switching success message based on the first information and the source node receives the switching success message.

4. The method according to claim 3, in, Also includes at least one of the following: The handover success message includes information of the second network node; The first information is a switching completion message sent by the terminal device to the second network node; The first information includes information of a source node; The first network node is a network node that initiates continuous conditional switching; The second network node is a network node where a candidate cell selected for conditional handover of the terminal is located; The second network node belongs to a set of candidate network nodes; The third network node belongs to a set of candidate network nodes; The switching success message is received by the source node to which the terminal device accesses; The handover success message is forwarded by the first network node to the source node accessed by the terminal device; The handover success message is received by all candidate network nodes; The candidate network nodes include a source node and / or a first network node.

5. A method of treatment, in, include: The source node sends a conditional switching cancel or modify command to the terminal device.

6. The method according to claim 5, in, Also includes at least one of the following: Receive condition switching cancellation or modification command; The conditional switching cancellation or modification command is sent directly to the source node by the third network node; The conditional switching cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node; The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes; The conditional switching cancellation or modification command includes the conditional allocation ID of the third network node; Receive a successful switch message.

7. The method according to claim 6, in, Also includes at least one of the following: The handover success message is directly sent by the second network node based on the first information; The handover success message is forwarded by the first network node from the second network node; The handover success message includes information of the second network node; The first information is a switching completion message sent by the terminal device to the second network node; The first information includes information of a source node; The first network node is a network node that initiates continuous conditional switching; The second network node is a network node where a candidate cell selected for conditional handover of the terminal is located; The second network node belongs to a set of candidate network nodes; The third network node belongs to a set of candidate network nodes; The candidate network nodes include a source node and / or a first network node.

8. A method of treatment, in, include: The third network node sends a conditional switching cancel or modify command, so that the terminal device receives the conditional switching cancel or modify command.

9. The method according to claim 8, in, Also includes at least one of the following: The conditional switching cancellation or modification command is sent by the source node to the terminal device; The conditional switching cancellation or modification command is sent directly to the source node by the third network node; The conditional switching cancellation or modification command is sent by the third network node to the first network node, and forwarded by the first network node to the source node; The conditional switching cancellation or modification command is sent by the third network node to all candidate network nodes; The conditional switching cancel or modify command includes the conditional allocation ID of the third network node.

10. The method according to claim 9, in, Also includes at least one of the following: The third network node belongs to a set of candidate network nodes; The candidate network nodes include a source node and / or a first network node; The first network node is a network node that initiates continuous conditional switching.

11. A method of treatment, in, include: The first network node sends a conditional handover cancel or modify command, so that the terminal device receives the conditional handover cancel or modify command, and the conditional handover cancel or modify command is sent by the third network node.

12. The method according to claim 11, in, Also includes at least one of the following: The conditional switching cancellation or modification command is sent by the source node to the terminal device; The conditional switching cancellation or modification command is forwarded by the first network node from the third network node to the source node; The conditional switching cancellation or modification command includes the conditional allocation ID of the third network node; Send a switching success message.

13. The method according to claim 12, in, Also includes at least one of the following: The handover success message is sent by the second network node based on the first information; The handover success message includes information of the second network node; The first information is a switching completion message sent by the terminal device to the second network node; The first information includes information of a source node; The first network node is a network node that initiates continuous conditional switching; The second network node is a network node where a candidate cell selected for conditional handover of the terminal is located; The second network node belongs to a set of candidate network nodes; The third network node belongs to a set of candidate network nodes; The switching success message is received by the source node to which the terminal device accesses; The handover success message is forwarded by the first network node to the source node accessed by the terminal device; The handover success message is received by all candidate network nodes.

14. A communication device, in, include: A memory and a processor, wherein a processing program is stored in the memory, and when the processing program is executed by the processor, the processing method according to claim 1, 5, 8 or 11 is implemented.

15. A storage medium, in, The storage medium stores a computer program, and when the computer program is executed by the processor, the processing method according to claim 1, 5, 8 or 11 is implemented.

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