Processing method, communication device, and storage medium

Abstract

By means of the technical solution of the present application, a secondary node is processed on the basis of at least one piece of terminal device dual-link information, LTM candidate configuration information and a secondary cell release indication, thereby further perfecting a dual-link handover technical mechanism.

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] The dual-link LTM (L1 / L2 Triggered Mobility) switching technology mechanism is designed to ensure seamless high-quality service connections as users move across different central cell areas.

[0003] During the process of conceiving and implementing this application, the inventors discovered that there are at least the following problems: the current dual-link switching technology mechanism is imperfect: for example, during the LTM switching process, the network device's processing of the auxiliary node is difficult to keep consistent with the terminal device, which will increase the switching delay.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical Solutions

[0005] The main purpose of this application is to provide a processing method, communication equipment and storage medium, aiming to further improve the dual link switching technology mechanism.

[0006] To achieve the above objectives, the present application provides a processing method that can be applied to a first network device (such as a base station), comprising the steps of:

[0007] S3: Processing the secondary node based on at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication.

[0008] Optionally, the method further comprises at least one of the following:

[0009] receiving terminal device dual link information sent by the second network device;

[0010] Receiving a secondary cell release indication and / or an application candidate cell identifier sent by a terminal device;

[0011] Obtain LTM candidate configuration information from the local machine;

[0012] The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication;

[0013] The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0014] Optionally, the method further comprises at least one of the following:

[0015] The terminal device dual link configuration information and / or the terminal device dual link configuration indication is used to indicate whether the terminal device is configured with dual link;

[0016] The terminal device dual link configuration information is carried in the switching notification signaling;

[0017] The secondary cell release indication and / or the application candidate cell identifier are carried in the radio resource control reconfiguration completion signaling;

[0018] The secondary cell release indication is used to instruct the terminal device whether to release the secondary cell group configuration;

[0019] At least one of the secondary cell release indication, the secondary node retention indication, and the secondary node release indication is 1 bit of information;

[0020] The central unit identifier is used to determine whether it is a LTM switch for a different central unit;

[0021] The LTM candidate configuration is determined by applying the candidate cell identity.

[0022] Optionally, step S3 includes at least one of the following:

[0023] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the first condition, determining to retain the secondary cell configuration;

[0024] If at least one of the terminal equipment dual link information, the LTM candidate configuration information and the secondary cell release indication meets the second condition, it is determined to release the secondary cell configuration.

[0025] Optionally, the method further comprises at least one of the following:

[0026] The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM handover is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication;

[0027] The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0028] Optionally, the method further comprises at least one of the following:

[0029] In the case of determining to release the secondary cell configuration, initiating a secondary node release process;

[0030] If it is determined that the secondary cell configuration is to be retained, the secondary node release process is not initiated;

[0031] Releasing the secondary cell configuration includes not applying the secondary cell group configuration and / or clearing the secondary cell group configuration;

[0032] The processing method is applied to the LTM handover scenario of primary cell groups of different central units.

[0033] The present application also provides a processing method, which can be applied to a second network device (such as a base station), comprising the steps of:

[0034] S1: Sending terminal device dual-link information, so that the first network device processes the secondary node based on the terminal device dual-link information.

[0035] Optionally, the first network device processes the auxiliary node based on the dual-link information of the terminal device, including:

[0036] The first network device processes the secondary node based on the dual link information of the terminal device in combination with the LTM candidate configuration information and / or the secondary cell release indication.

[0037] Optionally, the method further comprises at least one of the following:

[0038] The secondary cell release indication is obtained by the first network device from the terminal device;

[0039] The secondary cell release indication is carried in the radio resource control reconfiguration completion signaling;

[0040] The secondary cell release indication is used to instruct the terminal device whether to release the secondary cell group configuration;

[0041] The LTM candidate configuration information is obtained locally by the first network device;

[0042] The LTM candidate configuration information is determined by the first network device according to the application candidate cell identifier;

[0043] The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication;

[0044] The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0045] Optionally, the first network device processes the secondary node based on the dual link information of the terminal device in combination with the LTM candidate configuration information and / or the secondary cell release indication, including at least one of the following:

[0046] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication satisfies a first condition, the first network device determines to retain the secondary cell configuration;

[0047] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

[0048] Optionally, the method further comprises at least one of the following:

[0049] The application candidate cell identifier is obtained by the first network device from the terminal device;

[0050] The candidate cell identifier is carried in the radio resource control reconfiguration completion signaling;

[0051] The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM handover is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication;

[0052] The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0053] This application also provides a processing method that can be applied to a terminal device (such as a mobile phone), comprising the steps of:

[0054] S2: Send a secondary cell release indication and / or apply a candidate cell identifier, so that the first network device processes the secondary node based on the secondary cell release indication and / or apply the candidate cell identifier.

[0055] Optionally, the method further comprises at least one of the following:

[0056] Receiving LTM candidate configuration information and / or terminal device dual-link configuration information sent by the second network device;

[0057] Determine a secondary cell release indication based on LTM candidate configuration information and / or terminal device dual link configuration information;

[0058] The application candidate cell identifier is used by the first network device to determine LTM candidate configuration information.

[0059] Optionally, the first network device processes the secondary node based on the secondary cell release indication and / or applying the candidate cell identifier, including:

[0060] The first network device processes the secondary node based on the secondary cell release indication and in combination with the terminal device dual link information and / or LTM candidate configuration information.

[0061] Optionally, the method further comprises at least one of the following:

[0062] The terminal device dual link information is obtained by the first network device from the second network device;

[0063] The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication;

[0064] The LTM candidate configuration information is obtained locally by the first network device;

[0065] The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0066] Optionally, the method further comprises at least one of the following:

[0067] The terminal device dual link configuration information and / or the terminal device dual link configuration indication is used to indicate whether the terminal device is configured with dual link;

[0068] The secondary cell release indication and / or the application candidate cell identifier are carried in the radio resource control reconfiguration completion signaling;

[0069] The secondary cell release indication is used to instruct the terminal device whether to release the secondary cell group configuration;

[0070] At least one of the secondary cell release indication, the secondary node retention indication, and the secondary node release indication is 1 bit of information;

[0071] The central unit identifier is used to determine whether the LTM is switched to a different central unit.

[0072] Optionally, the first network device processes the secondary node based on the secondary cell release indication in combination with the terminal device dual link information and / or LTM candidate configuration information, including at least one of the following:

[0073] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication satisfies a first condition, the first network device determines to retain the secondary cell configuration;

[0074] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

[0075] Optionally, the method further comprises at least one of the following:

[0076] The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM handover is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication;

[0077] The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0078] 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 any of the processing methods described above are implemented.

[0079] The communication device in this application can be a terminal device (such as a mobile phone), a first network device (such as a base station), or a second network device (such as a base station). The specific reference needs to be clarified according to the context.

[0080] 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.

[0081] The technical solution of the present application further improves the dual-link switching technical mechanism by processing the secondary node based on at least one of the terminal device dual-link information, LTM candidate configuration information and secondary cell release indication. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] 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.

[0083] FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0084] FIG2 is a diagram of a communication network system architecture provided by an embodiment of the present application;

[0085] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0086] FIG4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0087] FIG5 is a schematic flow chart of a processing method according to the first embodiment;

[0088] FIG6 is a schematic diagram of an interaction sequence according to a second embodiment;

[0089] FIG7 is a schematic diagram of an interaction sequence according to an eighth embodiment;

[0090] FIG8 is a schematic diagram of an interaction sequence according to a tenth embodiment;

[0091] FIG9 is a schematic flow chart of a processing method according to an eleventh embodiment;

[0092] FIG10 is a schematic flow chart of a processing method according to a twelfth embodiment;

[0093] FIG11 is a first structural diagram of a processing device provided in an embodiment of the present application;

[0094] FIG12 is a second structural diagram of a processing device provided in an embodiment of the present application;

[0095] FIG13 is a third structural diagram of a processing device provided in an embodiment of the present application;

[0096] FIG14 is a schematic diagram of the structure of the communication device provided in an embodiment of the present application.

[0097] 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.

[0098] Implementation Methods of the Application

[0099] 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.

[0100] 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.

[0101] It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the term "if" as used herein may be interpreted as "when...", "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 described features, steps, operations, elements, components, items, types, and / or groups, but do not exclude 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., used herein, may be interpreted as inclusive, or mean 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] The communication device in this application can be a terminal device (such as a mobile phone), a first network device (such as a base station), or a second network device (such as a base station). The specific reference needs to be clarified according to the context.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] The following is a detailed introduction to the various components of the mobile terminal in conjunction with Figure 1:

[0112] 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 may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G and 6G, etc.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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 identify 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 repeated here.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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 a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203 and an operator's IP service 204, which are connected in sequence.

[0127] Optionally, UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.

[0128] 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 .

[0129] 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).

[0130] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0139] Technical terms involved in this application:

[0140] MCG: Master Cell Group, main cell group;

[0141] SCG: Secondary Cell Group, secondary cell group;

[0142] L1: Layer 1, layer one;

[0143] LTM: L1 / L2 Triggered Mobility, layer 1 / layer 2 triggered mobility;

[0144] MR: Measurement Report, measurement report;

[0145] MN: Master Node, master node;

[0146] SN: Secondary Node, auxiliary node;

[0147] TCI: Transmission Configuration Indicator, transmission configuration indication;

[0148] MAC CE: Media Access Control Control Element, media access control control element;

[0149] TA: Timing Advance, time advance;

[0150] CSC: Cell Switch Command, cell switching command;

[0151] DC: Dual Connectivity

[0152] PDCCH: Physical Downlink Control CHannel, physical downlink control channel.

[0153] First embodiment

[0154] 5 , which is a flow chart of a processing method according to a first embodiment, the processing method of the embodiment of the present application can be applied to a first network device (such as a base station), including the following steps:

[0155] S3: Processing the secondary node based on at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication.

[0156] Optionally, the processing method in the embodiment of the present application is applied to the LTM switching scenario of primary cell groups of different central units.

[0157] Optionally, the terminal device dual-link information may be sent by the second network device (eg, the source master node) to the first network device (eg, the candidate master node).

[0158] Optionally, the terminal device dual-link information includes terminal device dual-link configuration information and / or terminal device dual-link configuration indication.

[0159] Optionally, the terminal device dual-link configuration information and / or the terminal device dual-link configuration indication is used to indicate whether the terminal device is configured with dual-link.

[0160] Optionally, the LTM candidate configuration information may be locally acquired by the first network device, or may be determined by the first network device according to an application candidate cell identifier received from the terminal device.

[0161] Optionally, the application candidate cell identifier may be sent by the terminal device to the first network device.

[0162] Optionally, the LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0163] Optionally, the secondary cell release indication may be sent by the terminal device to the first network device.

[0164] Optionally, processing the secondary node includes retaining the secondary cell configuration and / or releasing the secondary cell configuration.

[0165] Optionally, if at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the first condition, it is determined to retain the secondary cell configuration.

[0166] Optionally, the first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is retained, the LTM candidate configuration information includes the secondary cell group configuration, the LTM switching is determined to be the same central unit based on the central unit identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication.

[0167] Optionally, when it is determined to retain the secondary cell configuration, the first network device does not initiate a secondary node release procedure.

[0168] Optionally, if at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the second condition, it is determined to release the secondary cell configuration.

[0169] Optionally, the second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0170] Optionally, when it is determined to release the secondary cell configuration, the first network device initiates a secondary node release procedure.

[0171] Optionally, releasing the secondary cell configuration includes not applying the secondary cell group configuration and / or clearing the secondary cell group configuration.

[0172] Through the technical solution of this embodiment, the secondary node is processed based on at least one of the terminal device dual link information, the LTM candidate configuration information and the secondary cell release indication, thereby further improving the dual link switching technical mechanism.

[0173] Second embodiment

[0174] Referring to Figure 6, Figure 6 is an interactive timing diagram shown according to the second embodiment. On the basis of the first embodiment of the present application, this embodiment further discloses the processing method in the aforementioned embodiment, specifically discloses the process of switching between consecutive different central units MCG LTM.

[0175] Optionally, the terminal device sends a measurement report to the second network device (ie, the source master node, such as a base station).

[0176] Optionally, the second network device decides to configure the LTM configuration and / or initiates the LTM preparation process.

[0177] Optionally, the source master node sends a handover request (HANDOVER REQUEST) signaling to at least one candidate master node.

[0178] Optionally, in an embodiment of the present application, at least one candidate master node includes a first candidate master node and / or a second candidate master node.

[0179] Optionally, the source master node requests LTM configuration (LTM-Config) information of at least one candidate master node. Optionally, the candidate master node LTM configuration information is candidate cell configuration information, and reference may be made to protocol TS 38.331v18, 6.3.2.

[0180] Optionally, the candidate master node LTM switching configuration information includes at least one LTM candidate configuration (LTM-Candidate) information.

[0181] Optionally, the handover request signaling further carries at least one of central unit identification list information, central unit identification information, at least one candidate cell configuration information, random access configuration, CSI resource configuration, CSI reporting configuration, and secondary node configuration information.

[0182] Optionally, the candidate cells belong to different master nodes, for example, the first candidate master node or the second candidate master node.

[0183] Optionally, the candidate master node is a base station of a different central unit (Inter-CU), for example, a gNB.

[0184] Optionally, the switching request signaling also carries at least one auxiliary node configuration information, including the source auxiliary node terminal Xn application identifier (SN UE XnAP ID), the auxiliary node identifier (SN ID), and the context configuration of the terminal device in the source auxiliary node, etc. For details, please refer to protocol TS 37.340, 10.7.2.

[0185] Optionally, the secondary node configuration information and / or the source secondary node is included in the source primary node configuration.

[0186] Optionally, before the second network device sends a switching request, the master node may also determine at least one secondary node configuration information and / or secondary cell group configuration information through a secondary node addition procedure (SN Addition procedure) and / or a secondary node modification procedure (SN Modification procedure). For details, please refer to protocols TS 37.340, 10.2, 10.3.

[0187] Optionally, at least one candidate master node feeds back a HANDOVER REQUEST ACKNOWLEDGE signaling in response to the handover request sent by the source master node.

[0188] Optionally, the handover request confirmation signaling carries the candidate master node LTM configuration, including: at least one candidate cell configuration information, random access configuration, CSI resource configuration, CSI reporting configuration, central unit identification information, and secondary node configuration information.

[0189] Optionally, at least one candidate master node is not configured with a secondary node and / or carries a feedback secondary node release indication, for example, the first candidate master node.

[0190] Optionally, at least one candidate master node has a configured secondary node and / or carries a feedback secondary node reservation indication, for example, a second candidate master node.

[0191] Optionally, before at least one candidate master node responds to the switching request feedback switching request confirmation signaling sent by the source master node, the candidate master node can also determine at least one secondary node configuration information and / or secondary cell group configuration information through the secondary node change process and / or secondary node change process.

[0192] Optionally, the secondary node is a candidate secondary node and / or a source secondary node.

[0193] Optionally, the candidate secondary node may be a source secondary node.

[0194] Optionally, the secondary node configuration is included in the candidate primary node configuration.

[0195] Optionally, after at least one candidate master node responds to the switching request sent by the source master node and feeds back a switching request confirmation signaling, the source master node may also send an LTM configuration update signaling, for example: LTM CONFIGURATION UPDATE, to at least one candidate cell. The LTM configuration update signaling carries LTM configuration information of other candidate master nodes and / or LTM configuration information of the updated master node.

[0196] Optionally, at least one candidate master node responds to the LTM configuration update signaling sent by the source master node and feeds back an LTM configuration update confirmation signaling, for example: LTM CONFIGURATION UPDATE ACKNOWLEDGE, and / or the source master node receives the LTM configuration update confirmation signaling fed back by at least one candidate master node, and the switch request confirmation signaling responds to the switch request signaling sent by the source master node.

[0197] Optionally, the LTM configuration update confirmation signaling carries updated LTM configuration information of the candidate master node.

[0198] Optionally, the source master node sends a radio resource control reconfiguration (RRCReconfiguration) signaling to the terminal device.

[0199] Optionally, the radio resource control reconfiguration signaling carries LTM switching configurations of different central units.

[0200] Optionally, different central unit LTM switching configurations include serving cell central unit identifier, LTM configuration information, layer one measurement configuration, secondary node configuration, secondary node retention indication, secondary node release indication, secondary cell group retention indication, secondary cell group release indication and attempt LTM switching (attemptLTM-Switch).

[0201] Optionally, the different central unit LTM configurations include a master node LTM configuration.

[0202] Optionally, the layer 1 measurement report configuration includes periodic, semi-persistent, and aperiodic. For details, please refer to protocol TS 38.214v18, 5.2.

[0203] Optionally, the layer 1 measurement report configuration further includes LTM measurement events, such as but not limited to:

[0204] Event LTM2: The beam of the serving cell becomes worse than the absolute threshold.

[0205] Event LTM3: The candidate cell beam is better than the serving cell beam after compensation (Event LTM3: Beam of candidate cell becomes amount of offset better than beam of serving cell);

[0206] Event LTM4: Beam of candidate cell becomes better than absolute threshold;

[0207] Event LTM5: The beam of the serving cell is lower than the first threshold and the beam of the candidate cell is higher than the second threshold (Beam of serving cell becomes worse than absolute threshold1 AND Beam of candidate cell becomes better than another absolute threshold2).

[0208] Optionally, the terminal device sends a radio resource control reconfiguration complete (RRCReconfigurationComplete) signaling in response to the radio resource control reconfiguration signaling sent by the master node.

[0209] Optionally, the radio resource control reconfiguration complete signaling is used to confirm that the base station configuration is acceptable.

[0210] Optionally, the terminal device performs downlink synchronization and / or uplink synchronization with the candidate cell.

[0211] Optionally, the uplink synchronization is early uplink synchronization (Early UL synchronization).

[0212] Optionally, the downlink synchronization is early downlink synchronization (Early DL synchronization).

[0213] Optionally, the terminal device performs early downlink synchronization and / or early uplink synchronization with a candidate cell, for example: a first candidate master node and / or a second candidate master node.

[0214] Optionally, the terminal device also activates and / or deactivates the TCI status of the candidate cell according to the base station instruction.

[0215] Optionally, the base station indication is a candidate cell TCI state activation and / or deactivation signaling, for example: MAC CE, for details, please refer to protocol TS 38.321v18.6.1.3.76.

[0216] Optionally, the terminal device performs early downlink synchronization based on the candidate cell TCI status activation and / or deactivation signaling.

[0217] Optionally, the terminal device performs uplink synchronization based on at least one of the following: LTM candidate configuration, base station / network triggering.

[0218] Optionally, if the LTM candidate configuration includes measuring time advance based on the terminal device, the terminal device measures the candidate cell time advance.

[0219] Optionally, the terminal device performs uplink synchronization according to the base station trigger, including: sending a random access preamble according to a physical downlink control channel order (PDCCH order).

[0220] Optionally, the terminal device reports a layer 1 measurement report (L1 Measurement Report).

[0221] Optionally, the terminal device reports a layer 1 measurement report according to the LTM configuration (LTM-Config).

[0222] Optionally, the triggering mode of the layer 1 measurement report includes at least one of periodic, semi-persistent, and aperiodic. For details, please refer to protocol TS 38.214v18, 5.2.

[0223] Optionally, the layer 1 measurement report triggering method further includes: if layer 1 measurement is satisfied, for example, if at least one candidate cell satisfies a measurement event, then a layer 1 measurement report is reported.

[0224] Optionally, the layer 1 measurement report is reported via MAC CE.

[0225] Optionally, the layer 1 measurement report includes measurement results of at least one candidate cell.

[0226] Through the technical solution of this embodiment, the second network device interacts with the terminal device and at least one candidate master node to execute the LTM configuration and / or LTM preparation process to improve the preparation process for continuous switching dual link processing.

[0227] Third embodiment

[0228] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a process in which a terminal device performs LTM switching to a first candidate master node.

[0229] Optionally, the source master node (second network device) sends an LTM cell switching command to the terminal device.

[0230] Optionally, the LTM cell switching command carries at least one of the following information: LTM candidate identifier (LTM-CandidateID) information, central unit identifier (CU-ID), time advance, uplink scheduling (UL Grant) and cell radio network temporary identifier (C-RNTI). For details, please refer to protocol TS 38.321v18, 6.1.3.75.

[0231] Optionally, the terminal device performs LTM switching according to the LTM cell switching command. For details, please refer to protocol TS 38.331v18, 5.3.5.18.6.

[0232] Optionally, the central unit identifier is used to indicate whether the LTM handover is an LTM handover between different central units. For example, when the serving cell central unit identifier is different from the target cell central unit identifier, they are considered to be different central units; and / or when the serving cell central unit identifier is the same as the target cell central unit identifier, they are considered to be the same central unit. Optionally, the central unit identifier can also be an identifier of any form and / or name, which is not limited in the embodiments of the present application.

[0233] Optionally, the terminal device determines the candidate cell center unit identifier based on the LTM candidate identifier, including: determining LTM candidate configuration information through the LTM candidate identifier.

[0234] Optionally, the LTM candidate configuration information includes a central unit identifier.

[0235] Optionally, the terminal device determines to switch to a different central unit LTM based on the central unit identifier and performs at least one of the following: security update, radio link control re-establishment, and packet data convergence protocol re-establishment.

[0236] Optionally, the cell switching command is sent via MAC CE.

[0237] Optionally, the cell switching command triggers the primary cell group to perform LTM switching.

[0238] Optionally, determining the target cell and / or the target cell LTM configuration according to the LTM cell handover command includes at least one of the following:

[0239] Determine the target cell based on the LTM candidate identifier;

[0240] Determine the complete configuration based on the reference configuration and the candidate configuration;

[0241] Determine the candidate configuration as a complete configuration based on the complete configuration indication (ltm-ConfigComplete);

[0242] Optionally, the terminal device applies the complete configuration and performs an LTM switchover.

[0243] Optionally, start the T304 timer.

[0244] Through the technical solution of this embodiment, specifically by carrying LTM candidate configuration information in the LTM cell switching command issued by the second network device, it is used for subsequent dual-link configuration judgment to improve the dual-link switching technical mechanism.

[0245] Fourth embodiment

[0246] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a process in which a terminal device performs LTM switching to a first candidate master node.

[0247] Optionally, the source master node (the second network device) sends a switching notification signaling to the target master node (eg, the first candidate master node).

[0248] Optionally, when the source master node determines to release the secondary cell configuration, the handover notification signaling carries a secondary cell configuration release indication.

[0249] Optionally, the secondary cell configuration release indication is used to instruct the primary cell group LTM handover to release the secondary cell group, and / or is used to instruct the primary cell group LTM handover to retain the cell group.

[0250] Optionally, the secondary cell configuration release indication may be 1-bit information, for example: 0 indicates releasing the secondary cell configuration; 1 indicates retaining the secondary cell configuration, or 1 indicates releasing the secondary cell configuration; 0 indicates retaining the secondary cell configuration, or, it is determined based on whether the handover notification signaling carries the secondary cell configuration release indication, for example: carrying the secondary cell configuration release indication indicates releasing the secondary cell configuration; not carrying the secondary cell configuration release indication indicates retaining the secondary cell configuration. This is not limited in the embodiments of the present application.

[0251] Optionally, when the source master node determines to retain the secondary cell configuration, the handover notification signaling carries a secondary cell configuration retention indication.

[0252] Optionally, the secondary cell configuration retention indication is used to instruct the primary cell group to release the secondary cell group during LTM switching, and / or to instruct the primary cell group to retain the cell group during LTM switching.

[0253] Optionally, the secondary cell configuration retention indication can be 1-bit information, for example: 0 indicates releasing the secondary cell configuration; 1 indicates retaining the secondary cell configuration, or, 1 indicates retaining the secondary cell configuration; 0 indicates releasing the secondary cell configuration, or, it is judged based on whether the switching notification signaling carries the secondary cell configuration retention indication, for example: carrying the secondary cell configuration retention indication indicates retaining the secondary cell configuration; and / or, not carrying the secondary cell configuration retention indication indicates releasing the secondary cell configuration, which is not limited in the embodiments of the present application.

[0254] Optionally, the secondary cell configuration release indication and / or the secondary cell configuration retention indication can be 1-bit information, used to indicate the terminal dual link configuration information, for example: 0 indicates that the terminal device is not configured with dual link; 1 indicates that the terminal device is configured with dual link, or, 1 terminal device is not configured with dual link; 0 indicates that the terminal device is configured with dual link, or, it is judged based on whether the switching notification signaling carries the secondary cell configuration release indication and / or the secondary cell configuration retention indication, for example: carrying the secondary cell configuration retention indication indicates that the terminal device is configured with dual link; not carrying the secondary cell configuration retention indication indicates that the terminal device is not configured with dual link, which is not limited in the embodiments of the present application.

[0255] Optionally, the switching notification signaling carries at least one of the terminal device dual link configuration information, the LTM candidate identifier, and the TCI status identifier.

[0256] Optionally, the dual-link configuration information of the terminal device includes at least one of a source auxiliary node terminal Xn application identifier, an auxiliary node identifier, and a context of the terminal device in the source auxiliary node.

[0257] Optionally, the terminal device dual-link configuration information also includes a terminal device dual-link configuration indication, for example: 0 indicates that the terminal device is not configured with dual-link; 1 indicates that the terminal device is configured with dual-link, or, 1 indicates that the terminal device is not configured with dual-link; 0 indicates that the terminal device is configured with dual-link, or, it is judged based on whether the switching notification signaling carries the terminal device dual-link configuration indication, for example: carrying the terminal device dual-link configuration indication indicates that the terminal device is configured with dual-link; optionally, not carrying the terminal device dual-link configuration indication indicates that the dual-link is not configured, which is not limited in the embodiments of the present application.

[0258] Optionally, the handover notification may be existing Xn interface signaling, such as a handover request. For details, please refer to protocol TS 38.401v18, 6.1, 9.8.4.

[0259] Optionally, the handover notification may also be a newly introduced signaling, such as HANDOVER NOTIFICATION, which is not limited in the embodiments of the present application.

[0260] Through the technical solution of this embodiment, the dual-link information of the terminal device is carried in the switching notification signaling sent by the second network device for use in subsequent dual-link configuration judgment, thereby improving the dual-link switching technical mechanism.

[0261] Fifth embodiment

[0262] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a process in which a terminal device performs LTM switching to a first candidate master node.

[0263] Optionally, the terminal device determines whether it is currently in a dual-link configuration.

[0264] Optionally, the terminal device judges and / or determines whether to retain or release the secondary cell group based on whether it is currently in a dual-link configuration, the target cell LTM configuration (ie, LTM candidate configuration information), and at least one of the central unit identifier, for example:

[0265] When the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0266] When the terminal device is in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0267] When the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0268] When the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0269] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0270] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0271] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to retain the secondary cell configuration;

[0272] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0273] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, determining to release the secondary cell configuration;

[0274] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0275] Optionally, if it is determined to retain the secondary cell, the secondary cell group may be reconfigured.

[0276] Optionally, releasing the secondary cell configuration may be at least one of the following: not applying the secondary cell group configuration, and clearing the secondary cell group configuration.

[0277] Optionally, the first candidate master node determines whether the terminal device is currently in a dual-link configuration.

[0278] Optionally, the target master node (e.g., the first candidate master node) judges and / or determines to retain or release the secondary cell group based on at least one of the terminal device dual link configuration information, the target cell LTM configuration (i.e., LTM candidate configuration information), and the central unit identifier, for example:

[0279] When the terminal device is configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0280] When the terminal device is configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0281] When the terminal device is not configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0282] When the terminal device is not configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0283] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0284] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0285] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and target cell LTM configuration include secondary cell group configuration, and then determine to retain the secondary cell configuration;

[0286] Determining, based on the central unit identifier, that the LTM switching is between different central units, that the terminal device is not configured with dual link, and that the target cell LTM configuration includes a secondary cell group configuration, then determining to release the secondary cell configuration;

[0287] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and that the target cell LTM configuration does not include a secondary cell group configuration, and then determine to release the secondary cell configuration;

[0288] If it is determined that the LTM switching is between different central units according to the central unit identifier, the terminal device is not configured with dual link, and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0289] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0290] Optionally, the first candidate master node determines to release the secondary cell configuration and initiates a secondary node release request process, for which reference may be made to protocol TS 37.340 v18, 10.4.

[0291] Optionally, the first candidate master node determines to retain the secondary cell configuration and does not initiate a secondary node release request process.

[0292] Through the technical solution of this embodiment, the terminal device and / or the first network device are used to determine whether the terminal device is in a dual link, so that the first network device's processing of the auxiliary node is consistent with that of the terminal device, thereby reducing the switching delay and further improving the dual link switching technical mechanism.

[0293] Sixth embodiment

[0294] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a process in which a terminal device performs LTM switching to a first candidate master node.

[0295] Optionally, the first candidate master node sends a switching notification confirmation signaling to the source master node.

[0296] Optionally, when the first candidate master node determines to release the secondary cell configuration, it sends a handover notification confirmation signaling.

[0297] Optionally, when the first candidate master node determines to retain the secondary cell configuration, no handover notification confirmation signaling is sent.

[0298] Optionally, the handover notification confirmation signaling is used to instruct the candidate master node to release the secondary node and / or secondary cell group configuration.

[0299] Optionally, the first candidate master node is the target master node for which the terminal device currently performs LTM switching.

[0300] Optionally, the handover notification confirmation signaling carries a secondary cell configuration release indication or a secondary cell configuration retention indication.

[0301] Optionally, the secondary cell configuration release indication can be 1-bit information, for example: 0 indicates releasing the secondary cell configuration; 1 indicates retaining the secondary cell configuration, or, 1 indicates releasing the secondary cell configuration; 0 indicates retaining the secondary cell configuration, or, it is judged based on whether the switching notification signaling carries the secondary cell configuration release indication, for example: carrying the secondary cell configuration release indication indicates releasing the secondary cell configuration; not carrying the secondary cell configuration release indication indicates retaining the secondary cell configuration, which is not limited in the embodiments of the present application.

[0302] Optionally, the secondary cell configuration retention indication can be 1-bit information, for example: 0 indicates releasing the secondary cell configuration; 1 indicates retaining the secondary cell configuration, or, 1 indicates retaining the secondary cell configuration; 0 indicates releasing the secondary cell configuration, or, it is judged based on whether the switching notification signaling carries the secondary cell configuration retention indication, for example: carrying the secondary cell configuration retention indication indicates retaining the secondary cell configuration; and / or, not carrying the secondary cell configuration retention indication indicates releasing the secondary cell configuration, which is not limited in the embodiments of the present application.

[0303] Optionally, the source master node sends a secondary node release request signaling to the source secondary node.

[0304] Optionally, when the source master node determines to release the secondary cell configuration, it sends a secondary node release request signaling.

[0305] Optionally, the secondary node release request signaling carries a secondary cell configuration release indication.

[0306] Optionally, the content carried in the secondary node release request signaling may refer to protocol TS 37.340v18, 10.4.

[0307] Optionally, the source secondary node sends a secondary node release request confirmation signaling to the source primary node.

[0308] Optionally, the source secondary node sends a secondary node release request confirmation signaling in response to the secondary node release request signaling sent by the source primary node.

[0309] Optionally, the content carried in the secondary node release request confirmation signaling may refer to protocol TS 37.340v18, 10.4.

[0310] Optionally, the terminal device initiates a random access process.

[0311] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell handover command, including at least one of the following:

[0312] The LTM cell handover command does not carry the target cell time advance information;

[0313] The LTM cell handover command carries the target cell random access parameters;

[0314] The terminal device does not have the target cell time advance information.

[0315] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell switching command. For details, please refer to the protocols TS 38.300v18, 9.2.3.5; TS 38.321v18, 5.1.

[0316] Optionally, the timer T304 is stopped after the random access procedure is completed.

[0317] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling and / or the first uplink data to the target cell. For details, please refer to protocol TS 38.300v18.9.2.3.5.2.

[0318] Optionally, the terminal device regards the target master node as the source master node and / or the service master node.

[0319] Optionally, the wireless resource control reconfiguration completion signaling carries applied LTM candidate identification information (appliedLTM-CandidateId), and the applied LTM candidate identification information is used to provide the LTM candidate identification applied by the target master node terminal device to perform LTM fast recovery (LTM fast recovery). For details, please refer to protocol TS 38.331v18, 5.3.5.3, 6.2.2.

[0320] Optionally, receiving a new uplink schedule and / or a new downlink schedule is regarded as completing the LTM switching and / or indicating that the upper layer LTM switching is successful.

[0321] Optionally, the radio resource control stops the timer T304 according to the LTM handover success indicated by the lower layer.

[0322] Through the technical solution of this embodiment, specifically through the first candidate master node sending a switching notification confirmation signaling to the source master node, and / or the source master node sending a secondary node release request signaling to the source secondary node, the source master node can synchronously release the secondary cell configuration, further improving the dual-link switching technical mechanism.

[0323] Seventh embodiment

[0324] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a process in which a terminal device performs LTM switching to a second candidate master node (ie, the first network device).

[0325] Optionally, the terminal device performs downlink synchronization and / or uplink synchronization with the second candidate cell on the first candidate master node.

[0326] Optionally, the terminal device reports a layer 1 measurement report.

[0327] Optionally, the source master node (the first candidate master node) sends an LTM cell switching command to the terminal device.

[0328] Optionally, the LTM cell switching command carries at least one of the following information: LTM candidate identifier (LTM-CandidateID) information, central unit identifier (CU-ID), time advance, uplink scheduling (UL Grant) and cell radio network temporary identifier (C-RNTI). For details, please refer to protocol TS 38.321v18.6.1.3.75.

[0329] Optionally, the terminal device performs LTM switching according to the LTM cell switching command. For details, please refer to protocol TS 38.331v18, 5.3.5.18.6.

[0330] Optionally, the central unit identifier is used to indicate whether the LTM handover is an LTM handover between different central units. For example, when the serving cell central unit identifier is different from the target cell central unit identifier, they are considered to be different central units; and / or when the serving cell central unit identifier is the same as the target cell central unit identifier, they are considered to be the same central unit. Optionally, the central unit identifier can also be an identifier of any form and / or name, which is not limited in the embodiments of the present application.

[0331] Optionally, the terminal device determines the candidate cell center unit identifier based on the LTM candidate identifier, including: determining LTM candidate configuration information through the LTM candidate identifier.

[0332] Optionally, the LTM candidate configuration information includes a central unit identifier.

[0333] Optionally, the terminal device determines to switch to a different central unit LTM based on the central unit identifier and performs at least one of the following: security update, radio link control re-establishment, and packet data convergence protocol re-establishment.

[0334] Optionally, the terminal device applies the complete configuration and performs an LTM switchover.

[0335] Optionally, start the T304 timer.

[0336] Optionally, the source master node (the first candidate master node) sends a switching notification signaling to the target master node (eg, the second candidate master node).

[0337] Optionally, when the source master node determines to release the secondary cell configuration, the handover notification signaling carries a secondary cell configuration release indication.

[0338] Optionally, the switching notification signaling carries at least one of the terminal device dual link configuration information, the LTM candidate identifier, and the TCI status identifier.

[0339] Optionally, the dual-link configuration information of the terminal device includes at least one of a source auxiliary node terminal Xn application identifier, an auxiliary node identifier, and a context of the terminal device in the source auxiliary node.

[0340] Optionally, the terminal device determines whether it is currently in a dual-link configuration.

[0341] Optionally, the terminal device judges and / or determines whether to retain or release the secondary cell group based on whether it is currently in a dual-link configuration, the target cell LTM configuration (ie, LTM candidate configuration information), and at least one of the central unit identifier, for example:

[0342] When the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0343] When the terminal device is in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0344] When the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0345] When the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0346] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0347] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0348] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to retain the secondary cell configuration;

[0349] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0350] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, determining to release the secondary cell configuration;

[0351] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0352] Optionally, if it is determined to retain the secondary cell, the secondary cell group may be reconfigured.

[0353] Optionally, releasing the secondary cell configuration may be at least one of the following: not applying the secondary cell group configuration, and clearing the secondary cell group configuration.

[0354] Optionally, the second candidate master node determines whether the terminal device is currently in a dual-link configuration.

[0355] Optionally, the target master node (e.g., the first candidate master node) judges and / or determines to retain or release the secondary cell group based on at least one of the terminal device dual link configuration information, the target cell LTM configuration (i.e., LTM candidate configuration information), and the central unit identifier, for example:

[0356] When the terminal device is configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0357] When the terminal device is configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0358] When the terminal device is not configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0359] When the terminal device is not configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0360] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0361] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0362] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and target cell LTM configuration include secondary cell group configuration, and then determine to retain the secondary cell configuration;

[0363] Determining, based on the central unit identifier, that the LTM switching is between different central units, that the terminal device is not configured with dual link, and that the target cell LTM configuration includes a secondary cell group configuration, then determining to release the secondary cell configuration;

[0364] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and that the target cell LTM configuration does not include a secondary cell group configuration, and then determine to release the secondary cell configuration;

[0365] If it is determined that the LTM switching is between different central units according to the central unit identifier, the terminal device is not configured with dual link, and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0366] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0367] Optionally, the second candidate master node determines to retain the secondary cell configuration and does not initiate a secondary node release request process.

[0368] Optionally, the second candidate master node determines to release the secondary cell configuration and initiates a secondary node release request process, for which reference may be made to protocol TS 37.340 v18, 10.4.

[0369] Optionally, the second candidate primary node determines to release the secondary cell configuration, and sends a secondary node release request to the corresponding candidate secondary node.

[0370] Optionally, the candidate secondary node responds to the secondary node release request and feeds back a confirmation of the secondary node release request to the second candidate primary node, thereby completing the release of the secondary node.

[0371] Optionally, the terminal device initiates a random access process.

[0372] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell handover command, including at least one of the following:

[0373] The LTM cell handover command does not carry the target cell time advance information;

[0374] The LTM cell handover command carries the target cell random access parameters;

[0375] The terminal device does not have the target cell time advance information.

[0376] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell switching command. For details, please refer to the protocols TS 38.300v18, 9.2.3.5; TS 38.321v18, 5.1.

[0377] Optionally, the timer T304 is stopped after the random access procedure is completed.

[0378] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling and / or the first uplink data to the target cell. For details, please refer to protocol TS 38.300v18.9.2.3.5.2.

[0379] Optionally, the terminal device regards the target master node as the source master node and / or the service master node.

[0380] Optionally, the wireless resource control reconfiguration completion signaling carries applied LTM candidate identification information (appliedLTM-CandidateId), and the applied LTM candidate identification information is used to provide the LTM candidate identification applied by the target master node terminal device to perform LTM fast recovery (LTM fast recovery). For details, please refer to protocol TS 38.331v18, 5.3.5.3, 6.2.2.

[0381] Optionally, receiving a new uplink schedule and / or a new downlink schedule is regarded as completing the LTM switching and / or indicating that the upper layer LTM switching is successful.

[0382] Optionally, the radio resource control stops the timer T304 according to the LTM handover success indicated by the lower layer.

[0383] Through the technical solution of this embodiment, the second candidate master node processes the secondary node based on the dual link information of the terminal device, the LTM candidate configuration information and at least one of the secondary cell release indications, so that the second candidate master node's processing of the secondary node is consistent with that of the terminal device, thereby reducing the switching delay and further improving the dual link processing mechanism under continuous LTM switching.

[0384] Eighth embodiment

[0385] Referring to Figure 7, Figure 7 is an interactive timing diagram shown according to the eighth embodiment. On the basis of any of the previous embodiments of the present application, this embodiment further discloses the processing method in the previous embodiments, and specifically discloses the process of switching between consecutive different central units MCGLTM.

[0386] Optionally, the terminal device sends a measurement report to the second network device (ie, the source master node, such as a base station).

[0387] Optionally, the second network device decides to configure the LTM configuration and / or initiates the LTM preparation process.

[0388] Optionally, the source master node sends a handover request (HANDOVER REQUEST) signaling to at least one candidate master node.

[0389] Optionally, the source master node requests LTM configuration (LTM-Config) information of at least one candidate master node. Optionally, the candidate master node LTM configuration information is candidate cell configuration information, and reference may be made to protocol TS 38.331v18, 6.3.2.

[0390] Optionally, the candidate master node LTM switching configuration information includes at least one LTM candidate configuration (LTM-Candidate) information.

[0391] Optionally, at least one candidate master node feeds back a HANDOVER REQUEST ACKNOWLEDGE signaling in response to the handover request sent by the source master node.

[0392] Optionally, the handover request confirmation signaling carries the candidate master node LTM configuration, including: at least one candidate cell configuration information, random access configuration, CSI resource configuration, CSI reporting configuration, central unit identification information, and secondary node configuration information.

[0393] Optionally, the source master node sends a radio resource control reconfiguration (RRCReconfiguration) signaling to the terminal device.

[0394] Optionally, the radio resource control reconfiguration signaling carries LTM switching configurations of different central units.

[0395] Optionally, different central unit LTM switching configurations include serving cell central unit identifier, LTM configuration information, layer one measurement configuration, secondary node configuration, secondary node retention indication, secondary node release indication, secondary cell group retention indication, secondary cell group release indication and attempt LTM switching (attemptLTM-Switch).

[0396] Optionally, the terminal device sends a radio resource control reconfiguration complete (RRCReconfigurationComplete) signaling in response to the radio resource control reconfiguration signaling sent by the master node.

[0397] Optionally, the terminal device performs downlink synchronization and / or uplink synchronization with the candidate cell.

[0398] Optionally, the terminal device reports a layer 1 measurement report (L1 Measurement Report).

[0399] Optionally, the source master node (second network device) sends an LTM cell switching command to the terminal device.

[0400] Optionally, the LTM cell switching command carries at least one of the following information: LTM candidate identifier (LTM-CandidateID) information, central unit identifier (CU-ID), time advance, uplink scheduling (UL Grant) and cell radio network temporary identifier (C-RNTI). For details, please refer to protocol TS 38.321v18, 6.1.3.75.

[0401] Optionally, the terminal device performs LTM switching according to the LTM cell switching command. For details, please refer to protocol TS 38.331v18, 5.3.5.18.6.

[0402] Optionally, the source master node (the second network device) sends a switching notification signaling to the target master node (eg, the first candidate master node).

[0403] Optionally, the first candidate master node sends a switching notification confirmation to the source master node.

[0404] Optionally, if the first candidate master node is not configured with a secondary node and / or a secondary cell configuration, a handover notification confirmation is sent to the source master node.

[0405] Optionally, the source master node sends a secondary node release request signaling to the source secondary node.

[0406] Optionally, when the source master node determines to release the secondary cell configuration, it sends a secondary node release request signaling.

[0407] Optionally, the secondary node release request signaling carries a secondary cell configuration release indication.

[0408] Optionally, the content carried in the secondary node release request signaling may refer to protocol TS 37.340v18, 10.4.

[0409] Optionally, the source secondary node sends a secondary node release request confirmation signaling to the source primary node.

[0410] Optionally, the source secondary node sends a secondary node release request confirmation signaling in response to the secondary node release request signaling sent by the source primary node.

[0411] Optionally, the content carried in the secondary node release request confirmation signaling may refer to protocol TS 37.340v18, 10.4.

[0412] Optionally, the terminal device determines whether it is currently in a dual-link configuration.

[0413] Optionally, the terminal device judges and / or determines whether to retain or release the secondary cell group based on whether it is currently in a dual-link configuration, the target cell LTM configuration (ie, LTM candidate configuration information), and at least one of the central unit identifier, for example:

[0414] When the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0415] When the terminal device is in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration:

[0416] When the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0417] When the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0418] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0419] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0420] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to retain the secondary cell configuration;

[0421] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0422] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, determining to release the secondary cell configuration;

[0423] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0424] Optionally, if it is determined to retain the secondary cell, the secondary cell group may be reconfigured.

[0425] Optionally, releasing the secondary cell configuration may be at least one of the following: not applying the secondary cell group configuration, and clearing the secondary cell group configuration.

[0426] Optionally, the terminal device initiates a random access process.

[0427] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell handover command, including at least one of the following:

[0428] The LTM cell handover command does not carry the target cell time advance information;

[0429] The LTM cell handover command carries the target cell random access parameters;

[0430] The terminal device does not have the target cell time advance information.

[0431] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell switching command. For details, please refer to the protocols TS 38.300v18, 9.2.3.5; TS 38.321v18, 5.1.

[0432] Optionally, the timer T304 is stopped after the random access procedure is completed.

[0433] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling and / or the first uplink data to the target cell. For details, please refer to protocol TS 38.300v18.9.2.3.5.2.

[0434] Optionally, the radio resource control reconfiguration completion signaling further carries a secondary cell release indication.

[0435] Optionally, the secondary cell release indication is used to indicate whether the terminal releases the secondary cell group configuration.

[0436] Optionally, the secondary cell release indication can be 1-bit information, for example; 0 indicates releasing the secondary cell configuration; 1 indicates retaining the secondary cell configuration, or, 1 indicates releasing the secondary cell configuration; 0 indicates retaining the secondary cell configuration, or, it is judged based on whether the wireless resource control reconfiguration completion signaling carries the secondary cell release indication, for example: carrying the secondary cell release indication indicates releasing the secondary cell configuration; and / or, not carrying the secondary cell release indication indicates retaining the secondary cell configuration, which is not limited in the embodiments of the present application.

[0437] Optionally, the terminal device regards the target master node as the source master node and / or the service master node.

[0438] Optionally, the wireless resource control reconfiguration completion signaling carries applied LTM candidate identification information (appliedLTM-CandidateId), and the applied LTM candidate identification information is used to provide the LTM candidate identification applied by the target master node terminal device to perform LTM fast recovery (LTM fast recovery). For details, please refer to protocol TS 38.331v18, 5.3.5.3, 6.2.2.

[0439] Optionally, receiving a new uplink schedule and / or a new downlink schedule is regarded as completing the LTM switching and / or indicating that the upper layer LTM switching is successful.

[0440] Optionally, the radio resource control stops the timer T304 according to the LTM handover success indicated by the lower layer.

[0441] Optionally, the first candidate master node determines whether the terminal device is currently in a dual-link configuration.

[0442] Optionally, the target master node (e.g., the first candidate master node) judges and / or determines to retain or release the secondary cell group based on at least one of the terminal device dual link configuration information, the target cell LTM configuration (i.e., LTM candidate configuration information), and the central unit identifier, for example:

[0443] When the terminal device is configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0444] When the terminal device is configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0445] When the terminal device is not configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0446] When the terminal device is not configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0447] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0448] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0449] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and target cell LTM configuration include secondary cell group configuration, and then determine to retain the secondary cell configuration;

[0450] Determining, based on the central unit identifier, that the LTM switching is between different central units, that the terminal device is not configured with dual link, and that the target cell LTM configuration includes a secondary cell group configuration, then determining to release the secondary cell configuration;

[0451] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and that the target cell LTM configuration does not include a secondary cell group configuration, and then determine to release the secondary cell configuration;

[0452] If it is determined that the LTM switching is between different central units according to the central unit identifier, the terminal device is not configured with dual link, and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0453] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0454] Optionally, the first candidate master node determines whether to retain the secondary node or release the secondary node according to at least one of the terminal device dual-link configuration information, the terminal device dual-link configuration indication, the application LTM candidate identification information, and the secondary cell release indication, for example:

[0455] If the terminal device is configured with dual link and the applied LTM candidate configuration includes a secondary cell group configuration, determining to retain the secondary node;

[0456] If the terminal device is configured with dual link and the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0457] If the terminal device is not configured with dual link and the applied LTM candidate configuration includes a secondary cell group configuration, determining to release the secondary node;

[0458] If the terminal device is not configured with dual link and the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0459] If the secondary cell release indication is retain and the applied LTM candidate configuration includes a secondary cell group configuration, determining to retain the secondary node;

[0460] If the secondary cell release indication is release and the applied LTM candidate configuration includes a secondary cell group configuration, determining to release the secondary node;

[0461] If the secondary cell release indication is retain and the applied LTM candidate configuration does not include the secondary cell group configuration, determine to release the secondary node;

[0462] If the secondary cell release indication is release and the applied LTM candidate configuration does not include a secondary cell group configuration, determine to release the secondary node;

[0463] If the secondary cell release indication is to release the secondary cell group configuration, determine to release the secondary node:

[0464] If the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0465] Optionally, the first candidate master node determines to release the secondary node, and then sends a secondary node release request signaling to the target secondary node.

[0466] Optionally, if the first candidate master node determines to release the secondary node and the first candidate master node is not associated with and / or configured with a secondary node, the secondary node release process is not initiated.

[0467] Optionally, if the first candidate master node determines to retain the secondary node, no secondary node release request signaling is sent to the target secondary node.

[0468] Optionally, the first candidate secondary node is a candidate secondary node or a candidate cell in the LTM candidate configuration.

[0469] Optionally, the first candidate master node determines to release the secondary cell configuration and initiates a secondary node release request process, for which reference may be made to protocol TS 37.340 v18, 10.4.

[0470] Through the technical solution of this embodiment, the first candidate master node determines whether to retain the secondary node or release the secondary node based on at least one of the terminal device dual-link configuration information, the terminal device dual-link configuration indication, the application of LTM candidate identification information, and the secondary cell release indication, so that the first candidate master node's processing of the secondary node is consistent with that of the terminal device, thereby reducing the switching delay and further improving the dual-link switching technical mechanism.

[0471] Ninth embodiment

[0472] Based on any of the foregoing embodiments of the present application, this embodiment further discloses a process in which a terminal device performs LTM switching to a second candidate master node (ie, the first network device).

[0473] Optionally, the terminal device performs downlink synchronization and / or uplink synchronization with the candidate cell.

[0474] Optionally, the terminal device reports a layer 1 measurement report (L1 Measurement Report).

[0475] Optionally, the terminal device reports a layer 1 measurement report according to the LTM configuration (LTM-Config).

[0476] Optionally, the source master node sends an LTM cell switching command to the terminal device.

[0477] Optionally, the LTM cell switching command carries at least one of the following information: LTM candidate identifier (LTM-CandidateID) information, central unit identifier (CU-ID), time advance, uplink scheduling (UL Grant) and cell radio network temporary identifier (C-RNTI). For details, please refer to protocol TS 38.321v18.6.1.3.75.

[0478] Optionally, the source master node sends a switching notification signaling to the target master node (eg, the second candidate master node).

[0479] Optionally, when the source master node (eg, the first candidate master node) determines to release the secondary cell configuration, the handover notification signaling carries a secondary cell configuration release indication.

[0480] Optionally, the terminal device determines whether it is currently in a dual-link configuration.

[0481] Optionally, the terminal device judges and / or determines whether to retain or release the secondary cell group based on whether it is currently in a dual-link configuration, the target cell LTM configuration (ie, LTM candidate configuration information), and at least one of the central unit identifier, for example:

[0482] When the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0483] When the terminal device is in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0484] When the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0485] When the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0486] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0487] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0488] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to retain the secondary cell configuration;

[0489] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0490] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, determining to release the secondary cell configuration;

[0491] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0492] Optionally, if it is determined to retain the secondary cell, the secondary cell group may be reconfigured.

[0493] Optionally, releasing the secondary cell configuration may be at least one of the following: not applying the secondary cell group configuration, and clearing the secondary cell group configuration.

[0494] Optionally, the terminal device initiates a random access process.

[0495] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell handover command, including at least one of the following:

[0496] The LTM cell handover command does not carry the target cell time advance information;

[0497] The LTM cell handover command carries the target cell random access parameters;

[0498] The terminal device does not have the target cell time advance information.

[0499] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell switching command. For details, please refer to the protocols TS 38.300v18, 9.2.3.5; TS 38.321v18, 5.1.

[0500] Optionally, the timer T304 is stopped after the random access procedure is completed.

[0501] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling and / or the first uplink data to the target cell. For details, please refer to protocol TS 38.300v18.9.2.3.5.2.

[0502] Optionally, the radio resource control reconfiguration completion signaling further carries a secondary cell release indication.

[0503] Optionally, the secondary cell release indication is used to indicate whether the terminal releases the secondary cell group configuration.

[0504] Optionally, the secondary cell release indication can be 1-bit information, for example: 0 indicates releasing the secondary cell configuration; 1 indicates retaining the secondary cell configuration, or, 1 indicates releasing the secondary cell configuration; 0 indicates retaining the secondary cell configuration, or, it is determined based on whether the wireless resource control reconfiguration completion signaling carries the secondary cell release indication, for example: carrying the secondary cell release indication indicates releasing the secondary cell configuration; and / or, not carrying the secondary cell release indication indicates retaining the secondary cell configuration, which is not limited in the embodiments of the present application.

[0505] Optionally, the terminal device regards the target master node as the source master node and / or the service master node.

[0506] Optionally, the wireless resource control reconfiguration completion signaling carries applied LTM candidate identification information (appliedLTM-CandidateId), and the applied LTM candidate identification information is used to provide the LTM candidate identification applied by the target master node terminal device to perform LTM fast recovery (LTM fast recovery). For details, please refer to protocol TS 38.331v18, 5.3.5.3, 6.2.2.

[0507] Optionally, receiving a new uplink schedule and / or a new downlink schedule is regarded as completing the LTM switching and / or indicating that the upper layer LTM switching is successful.

[0508] Optionally, the radio resource control stops the timer T304 according to the LTM handover success indicated by the lower layer.

[0509] Optionally, the second candidate master node determines whether the terminal device is currently in a dual-link configuration.

[0510] Optionally, the target master node (e.g., the second candidate master node) judges and / or determines to retain or release the secondary cell group based on at least one of the terminal device dual link configuration information, the target cell LTM configuration (ie, LTM candidate configuration information), and the central unit identifier, for example:

[0511] When the terminal device is configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0512] When the terminal device is configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0513] When the terminal device is not configured with dual link and the target cell LTM configuration includes a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0514] When the terminal device is not configured with dual link and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0515] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0516] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0517] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and target cell LTM configuration include secondary cell group configuration, and then determine to retain the secondary cell configuration;

[0518] Determining, based on the central unit identifier, that the LTM switching is between different central units, that the terminal device is not configured with dual link, and that the target cell LTM configuration includes a secondary cell group configuration, then determining to release the secondary cell configuration;

[0519] Determine, based on the central unit identifier, that LTM switching for different central units and dual link configuration for the terminal device and that the target cell LTM configuration does not include a secondary cell group configuration, and then determine to release the secondary cell configuration;

[0520] If it is determined that the LTM switching is between different central units according to the central unit identifier, the terminal device is not configured with dual link, and the target cell LTM configuration does not include the secondary cell group configuration, it is determined to release the secondary cell configuration;

[0521] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0522] Optionally, the second candidate master node determines whether to retain the secondary node or release the secondary node according to at least one of the terminal device dual-link configuration information, the terminal device dual-link configuration indication, the application LTM candidate identification information, and the secondary cell release indication, for example:

[0523] If the terminal device is configured with dual link and the applied LTM candidate configuration includes a secondary cell group configuration, determining to retain the secondary node;

[0524] If the terminal device is configured with dual link and the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0525] If the terminal device is not configured with dual link and the applied LTM candidate configuration includes a secondary cell group configuration, determining to release the secondary node;

[0526] If the terminal device is not configured with dual link and the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0527] If the secondary cell release indication is retain and the applied LTM candidate configuration includes a secondary cell group configuration, determining to retain the secondary node;

[0528] If the secondary cell release indication is release and the applied LTM candidate configuration includes a secondary cell group configuration, determining to release the secondary node;

[0529] If the secondary cell release indication is retain and the applied LTM candidate configuration does not include the secondary cell group configuration, determine to release the secondary node;

[0530] If the secondary cell release indication is release and the applied LTM candidate configuration does not include a secondary cell group configuration, determine to release the secondary node;

[0531] If the secondary cell release indication is to release the secondary cell group configuration, determine to release the secondary node;

[0532] If the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0533] Optionally, the second candidate master node determines to release the secondary node, and then sends a secondary node release request signaling to the target secondary node.

[0534] Optionally, if the second candidate master node determines to retain the secondary node, no secondary node release request signaling is sent to the target secondary node.

[0535] Optionally, the second candidate secondary node is a candidate secondary node or a candidate cell in the LTM candidate configuration.

[0536] Optionally, the second candidate master node determines to release the secondary cell configuration and initiates a secondary node release request process, for which reference may be made to protocol TS 37.340 v18, 10.4.

[0537] Optionally, the second candidate primary node determines to release the secondary cell configuration, and sends a secondary node release request to the corresponding candidate secondary node.

[0538] Optionally, the candidate secondary node responds to the secondary node release request and feeds back a confirmation of the secondary node release request to the second candidate primary node, thereby completing the release of the secondary node.

[0539] Through the technical solution of this embodiment, the second candidate master node determines whether to retain the secondary node or release the secondary node based on at least one of the terminal device dual-link configuration information, the terminal device configuration dual-link indication, the application of LTM candidate identification information and the secondary cell release indication, so that the second candidate master node's processing of the secondary node is consistent with that of the terminal device, thereby reducing the switching delay and further improving the dual-link processing mechanism under continuous LTM switching.

[0540] Tenth embodiment

[0541] Referring to Figure 8, Figure 8 is an interactive timing diagram shown according to the tenth embodiment. On the basis of any of the previous embodiments of the present application, this embodiment further discloses the processing method in the previous embodiments, and specifically discloses the processing method of the auxiliary node during the LTM switching fast recovery process.

[0542] Optionally, the terminal device sends a measurement report to the second network device (ie, the source master node, such as a base station).

[0543] Optionally, the second network device decides to configure the LTM configuration and / or initiates the LTM preparation process.

[0544] Optionally, the source master node sends a handover request (HANDOVER REQUEST) signaling to at least one candidate master node.

[0545] Optionally, at least one candidate master node feeds back a HANDOVER REQUEST ACKNOWLEDGE signaling in response to the handover request sent by the source master node.

[0546] Optionally, the handover request confirmation signaling carries the candidate master node LTM configuration, including: at least one candidate cell configuration information, random access configuration, CSI resource configuration, CSI reporting configuration, central unit identification information, and secondary node configuration information.

[0547] Optionally, at least one candidate master node is not configured with a secondary node and / or carries a feedback secondary node release indication, for example, the first candidate master node.

[0548] Optionally, at least one candidate master node has a configured secondary node and / or carries a feedback secondary node reservation indication, for example, a second candidate master node.

[0549] Optionally, before at least one candidate master node responds to the switching request feedback switching request confirmation signaling sent by the source master node, the candidate master node can also determine at least one secondary node configuration information and / or secondary cell group configuration information through the secondary node change process and / or secondary node change process.

[0550] Optionally, the source master node sends a radio resource control reconfiguration (RRCReconfiguration) signaling to the terminal device.

[0551] Optionally, the radio resource control reconfiguration signaling carries LTM switching configurations of different central units.

[0552] Optionally, different central unit LTM switching configurations include serving cell central unit identifier, LTM configuration information, layer one measurement configuration, secondary node configuration, secondary node retention indication, secondary node release indication, secondary cell group retention indication, secondary cell group release indication and attempt LTM switching (attemptLTM-Switch).

[0553] Optionally, the different central unit LTM configurations include a master node LTM configuration.

[0554] Optionally, the terminal device sends a radio resource control reconfiguration complete (RRCReconfigurationComplete) signaling in response to the radio resource control reconfiguration signaling sent by the master node.

[0555] Optionally, the terminal device performs downlink synchronization and / or uplink synchronization with the candidate cell.

[0556] Optionally, the terminal device reports a layer 1 measurement report (L1 Measurement Report).

[0557] Optionally, the terminal device reports a layer 1 measurement report according to the LTM configuration (LTM-Config).

[0558] Optionally, the source master node sends an LTM cell switching command to the terminal device.

[0559] Optionally, the source master node sends a switching notification signaling to the target master node (eg, the first candidate master node).

[0560] Optionally, the terminal device determines whether it is currently in a dual-link configuration.

[0561] Optionally, the first candidate master node determines whether the terminal device is currently in a dual-link configuration.

[0562] Optionally, the target master node (eg, the first candidate master node) judges and / or determines to retain or release the secondary cell group based on at least one of the terminal device dual-link configuration information, the target cell LTM configuration (ie, the LTM candidate configuration information), and the central unit identifier.

[0563] Optionally, the first candidate master node determines to release the secondary cell configuration and initiates a secondary node release request process, for which reference may be made to protocol TS 37.340 v18, 10.4.

[0564] Optionally, if the first candidate master node determines to release the secondary node and the first candidate master node is not associated with and / or configured with a secondary node, the secondary node release process is not initiated.

[0565] Optionally, the first candidate master node sends a switching notification confirmation signaling to the source master node.

[0566] Optionally, the source master node sends a secondary node release request signaling to the source secondary node.

[0567] Optionally, when the source master node determines to release the secondary cell configuration, it sends a secondary node release request signaling.

[0568] Optionally, the secondary node release request signaling carries a secondary cell configuration release indication.

[0569] Optionally, the content carried in the secondary node release request signaling may refer to protocol TS 37.340v18, 10.4.

[0570] Optionally, the source secondary node sends a secondary node release request confirmation signaling to the source primary node.

[0571] Optionally, the source secondary node sends a secondary node release request confirmation signaling in response to the secondary node release request signaling sent by the source primary node.

[0572] Optionally, the content carried in the secondary node release request confirmation signaling may refer to protocol TS 37.340v18, 10.4.

[0573] Optionally, the terminal device initiates a random access process.

[0574] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell handover command, including at least one of the following:

[0575] The LTM cell handover command does not carry the target cell time advance information;

[0576] The LTM cell handover command carries the target cell random access parameters;

[0577] The terminal device does not have the target cell time advance information.

[0578] Optionally, the terminal device determines whether to initiate a random access procedure according to the LTM cell switching command. For details, please refer to the protocols TS 38.300v18, 9.2.3.5; TS 38.321v18, 5.1.

[0579] Optionally, the terminal device continuously initiates the random access process including: continuously sending the random access preamble and continuously increasing the uplink transmission power. For details, please refer to protocol TS 38.321v18, 5.1.

[0580] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling and / or the first uplink data to the target cell. For details, please refer to protocol TS 38.300v18.9.2.3.5.2.

[0581] Optionally, the terminal device continues to send the first uplink data and / or radio resource control reconfiguration completion signaling.

[0582] Optionally, the terminal device sends the first uplink data or radio resource control reconfiguration completion signaling based on uplink dynamic scheduling (DG) and / or configured grant (CG). For details, please refer to protocol TS 38.321v18, 5.4.1, 5.4.2.

[0583] Optionally, timer T304 times out.

[0584] Optionally, the terminal device performs at least one of the following operations: restoring the primary cell configuration, triggering the radio resource control reestablishment process, and restoring the packet data convergence protocol state variables (PDCP State variables).

[0585] Optionally, for the processing after timer T304 times out, reference may be made to protocol TS38.331v18, 5.3.5.8.3.

[0586] Optionally, the terminal device performs restoration of the source master node and / or source master cell configuration and performs cell selection, etc. For details, please refer to protocol TS 38.331v18.5.3.7.

[0587] Optionally, when the LTM candidate configuration includes attempting LTM handover and the selected cell is an LTM candidate configuration, if the LTM candidate configuration does not include a secondary cell group configuration or a secondary node release indication, the LTM cell handover procedure and / or the MCG LTM cell handover procedure is executed.

[0588] Optionally, when the LTM candidate configuration includes attempting LTM handover and the selected cell is an LTM candidate configuration, LTM fast recovery is performed.

[0589] Optionally, the LTM switching process is performed according to the LTM candidate configuration selected by the cell. For details, please refer to protocol TS 38.331v18, 5.3.5.18.6.

[0590] Optionally, the central unit identifier is used to indicate whether the LTM handover is an LTM handover between different central units. For example, when the serving cell central unit identifier is different from the target cell central unit identifier, they are considered to be different central units; and / or when the serving cell central unit identifier is the same as the target cell central unit identifier, they are considered to be the same central unit. Optionally, the central unit identifier can also be an identifier of any form and / or name, which is not limited in the embodiments of the present application.

[0591] Optionally, the terminal device determines to switch to a different central unit LTM according to the central unit identifier and performs at least one of security update, radio link control reconstruction and packet data convergence protocol reconstruction.

[0592] Optionally, the LTM switching is LTM switching of different central units MCG.

[0593] Optionally, the switching of the MCG LTMs of different central units includes at least one of the following:

[0594] Determine the target cell based on the LTM candidate identifier;

[0595] Determine the complete configuration based on the reference configuration and the candidate configuration;

[0596] determining, according to the complete configuration indication, that the candidate configuration is a complete configuration;

[0597] Optionally, the terminal device applies the complete configuration and performs an LTM switchover.

[0598] Optionally, start the T304 timer.

[0599] Optionally, when the LTM candidate configuration includes attempting LTM handover and the selected cell is an LTM candidate configuration, if the LTM candidate configuration includes a secondary cell group configuration and / or a secondary cell group retention indication, at least one of the following is performed:

[0600] Cell reselection;

[0601] Radio resource control falls back to the idle state (RRC_IDLE);

[0602] Release MCG configuration;

[0603] Release SCG configuration;

[0604] When the terminal device is configured with dual link configuration, release the SCG configuration.

[0605] Optionally, the terminal device determines whether it is currently in a dual-link configuration.

[0606] Optionally, the terminal device judges and / or determines whether to retain or release the secondary cell group based on whether it is currently in a dual-link configuration, the target cell LTM configuration (ie, LTM candidate configuration information), and at least one of the central unit identifier, for example:

[0607] When the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, it is determined to retain the secondary cell configuration;

[0608] When the terminal device is in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0609] When the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0610] When the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, it is determined to release the secondary cell configuration;

[0611] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration includes a secondary cell group configuration, then determining to retain the secondary cell configuration;

[0612] Determining, based on the central unit identifier, that the LTM handover is between different central units and that the target cell LTM configuration does not include a secondary cell group configuration, then determining to release the secondary cell configuration;

[0613] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to retain the secondary cell configuration;

[0614] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration includes a secondary cell group configuration, determining to release the secondary cell configuration;

[0615] Determining that the LTM switching is between different central units based on the central unit identifier and when the terminal device is not in a dual-link configuration and the target cell LTM configuration does not include a secondary cell group configuration, determining to release the secondary cell configuration;

[0616] If it is determined that the LTM handover is to the same central cell according to the central cell identifier, it is determined that the secondary cell configuration is retained.

[0617] Optionally, if it is determined to retain the secondary cell, the secondary cell group may be reconfigured.

[0618] Optionally, releasing the secondary cell configuration may be at least one of the following: not applying the secondary cell group configuration, and clearing the secondary cell group configuration.

[0619] Optionally, the terminal device initiates a random access process.

[0620] Optionally, the timer T304 is stopped after the random access procedure is completed.

[0621] Optionally, the terminal device sends a radio resource control reconfiguration completion signaling and / or the first uplink data to the target cell. For details, please refer to protocol TS 38.300v18.9.2.3.5.2.

[0622] Optionally, the terminal device regards the target master node as the source master node and / or the service master node.

[0623] Optionally, the wireless resource control reconfiguration completion signaling carries applied LTM candidate identification information (appliedLTM-CandidateId), and the applied LTM candidate identification information is used to provide the LTM candidate identification applied by the target master node terminal device to perform LTM fast recovery (LTM fast recovery). For details, please refer to protocol TS 38.331v18, 5.3.5.3, 6.2.2.

[0624] Optionally, receiving a new uplink schedule and / or a new downlink schedule is regarded as completing the LTM switching and / or indicating that the upper layer LTM switching is successful.

[0625] Optionally, the radio resource control stops the timer T304 according to the LTM handover success indicated by the lower layer.

[0626] Optionally, the radio resource control reconfiguration completion signaling further carries a secondary cell release indication.

[0627] Optionally, the secondary cell release indication is used to indicate whether the terminal device releases the secondary cell group configuration.

[0628] Optionally, the secondary cell release indication can be 1-bit information, for example: 0 indicates releasing the secondary cell configuration; 1 indicates retaining the secondary cell configuration, or, 1 indicates releasing the secondary cell configuration; 0 indicates retaining the secondary cell configuration, or, it is determined based on whether the wireless resource control reconfiguration completion signaling carries the secondary cell release indication, for example: carrying the secondary cell release indication indicates releasing the secondary cell configuration; and / or, not carrying the secondary cell release indication indicates retaining the secondary cell configuration, which is not limited in the embodiments of the present application.

[0629] Optionally, the target master node and the source master node exchange switching notifications.

[0630] Optionally, the target master node notifies the source master node of the handover completion and / or LTM handover notification via Xn interface signaling. The Xn interface signaling may be HANDOVER SUCCESS signaling or other existing Xn interface signaling. For details, please refer to protocol TS 38.401v18, 6.1, 9.8.4.

[0631] Optionally, the source master node sends the response information through Xn interface signaling. The Xn interface signaling may be HANDOVER REQUEST signaling or other existing Xn interface signaling. For details, please refer to protocol TS 38.401v18, 6.1, 9.8.4.

[0632] Optionally, the response information also carries dual-link configuration information of the terminal device.

[0633] Optionally, the dual-link configuration information of the terminal device includes at least one of the following: a source auxiliary node terminal Xn application identifier, an auxiliary node identifier, and a context of the terminal device in the source auxiliary node.

[0634] Optionally, the terminal device dual-link configuration information also includes a terminal device dual-link configuration indication, for example: for example: 0 indicates that the terminal device is not configured with dual-link; 1 indicates that the terminal device is configured with dual-link, or, 1 the terminal device is not configured with dual-link; 0 indicates that the terminal device is configured with dual-link, or, it is determined based on whether the switching notification signaling carries the terminal device dual-link configuration indication, for example: carrying the terminal device dual-link configuration indication indicates that the terminal device is configured with dual-link; and / or, not carrying the terminal device dual-link configuration indication indicates that the dual-link is not configured. This is not limited in the embodiments of the present application.

[0635] Optionally, the second candidate master node determines whether the terminal is currently in a dual-link configuration.

[0636] Optionally, the second candidate master node determines whether to retain the secondary node or release the secondary node according to at least one of the terminal device dual-link configuration information, the terminal device dual-link configuration indication, the application LTM candidate identification information, and the secondary cell release indication, for example:

[0637] If the terminal device is configured with dual link and the applied LTM candidate configuration includes a secondary cell group configuration, determining to retain the secondary node;

[0638] If the terminal device is configured with dual link and the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0639] If the terminal device is not configured with dual link and the applied LTM candidate configuration includes a secondary cell group configuration, determining to release the secondary node;

[0640] If the terminal device is not configured with dual link and the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0641] If the secondary cell release indication is retain and the applied LTM candidate configuration includes a secondary cell group configuration, determining to retain the secondary node;

[0642] If the secondary cell release indication is release and the applied LTM candidate configuration includes a secondary cell group configuration, determining to release the secondary node;

[0643] If the secondary cell release indication is retain and the applied LTM candidate configuration does not include the secondary cell group configuration, determine to release the secondary node;

[0644] If the secondary cell release indication is release and the applied LTM candidate configuration does not include a secondary cell group configuration, determine to release the secondary node;

[0645] If the secondary cell release indication is to release the secondary cell group configuration, determine to release the secondary node;

[0646] If the applied LTM candidate configuration does not include a secondary cell group configuration, determining to release the secondary node;

[0647] Optionally, the second candidate master node determines to release the secondary node, and then sends a secondary node release request signaling to the target secondary node.

[0648] Optionally, if the second candidate master node determines to retain the secondary node, no secondary node release request signaling is sent to the target secondary node.

[0649] Optionally, the second candidate master node is a master node that performs LTM fast recovery on the terminal device.

[0650] Optionally, the candidate secondary node is a candidate secondary node or a candidate cell in an LTM candidate configuration.

[0651] Optionally, the second candidate master node determines to release the secondary cell configuration and initiates a secondary node release request process, for which reference may be made to protocol TS 37.340 v18, 10.4.

[0652] Optionally, the second candidate primary node determines to release the secondary cell configuration, and sends a secondary node release request to the corresponding candidate secondary node.

[0653] Optionally, the candidate secondary node responds to the secondary node release request and feeds back a confirmation of the secondary node release request to the second candidate primary node, thereby completing the release of the secondary node.

[0654] Through the technical solution of this embodiment, specifically by explicitly retaining or releasing the auxiliary node in the LTM switching fast recovery process and / or the wireless resource control connection reconstruction process, the network device's processing of the auxiliary node is kept consistent with that of the terminal device, thereby reducing the switching delay and further improving the dual-link processing mechanism.

[0655] Eleventh embodiment

[0656] 9 is a flow chart of a processing method according to an eleventh embodiment. The processing method according to the embodiment of the present application can be applied to a second network device (such as a base station), and includes the following steps:

[0657] S1: Sending terminal device dual-link information, so that the first network device processes the secondary node based on the terminal device dual-link information.

[0658] Optionally, the processing method in the embodiment of the present application is applied to the LTM switching scenario of primary cell groups of different central units.

[0659] Optionally, the first network device processes the auxiliary node based on the dual-link information of the terminal device, including:

[0660] The first network device processes the secondary node based on the dual link information of the terminal device in combination with the LTM candidate configuration information and / or the secondary cell release indication.

[0661] Optionally, the secondary cell release indication is obtained by the first network device from the terminal device.

[0662] Optionally, the secondary cell release indication is carried in radio resource control reconfiguration completion signaling.

[0663] Optionally, the secondary cell release indication is used to indicate whether the terminal device releases the secondary cell group configuration.

[0664] Optionally, the LTM candidate configuration information is locally acquired by the first network device.

[0665] Optionally, the LTM candidate configuration information is determined by the first network device according to the application candidate cell identifier.

[0666] Optionally, the terminal device dual-link information includes terminal device dual-link configuration information and / or terminal device dual-link configuration indication.

[0667] Optionally, the LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0668] Optionally, if at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the first condition, the first network device determines to retain the secondary cell configuration.

[0669] Optionally, if at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

[0670] Optionally, the application candidate cell identifier is obtained by the first network device from the terminal device.

[0671] Optionally, the candidate cell identifier is carried in the radio resource control reconfiguration completion signaling.

[0672] Optionally, the first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is retained, the LTM candidate configuration information includes the secondary cell group configuration, the LTM switching is determined to be the same central unit based on the central unit identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication.

[0673] Optionally, the second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0674] Optionally, when determining to release the secondary cell configuration, the first network device initiates a secondary node release procedure.

[0675] Optionally, if the first network device determines to release the secondary node and the first network device is not associated with and / or configured with the secondary node, the secondary node release process is not initiated.

[0676] Optionally, when determining to retain the secondary cell configuration, the first network device does not initiate a secondary node release procedure.

[0677] Optionally, releasing the secondary cell configuration includes not applying the secondary cell group configuration and / or clearing the secondary cell group configuration.

[0678] Through the technical solution of this embodiment, the terminal device dual-link information is specifically sent through the second network device, so that the first network device processes the auxiliary node based on the terminal device dual-link information, so that the network device's processing of the auxiliary node is consistent with that of the terminal device, thereby reducing the switching delay and further improving the LTM switching and / or continuous LTM switching dual-link processing mechanism.

[0679] Twelfth embodiment

[0680] 10 , which is a flow chart of a processing method according to a twelfth embodiment, the processing method of the embodiment of the present application can be applied to a terminal device (such as a mobile phone), including the following steps:

[0681] S2: Send a secondary cell release indication and / or apply a candidate cell identifier, so that the first network device processes the secondary node based on the secondary cell release indication and / or apply the candidate cell identifier.

[0682] Optionally, the processing method in the embodiment of the present application is applied to the LTM switching scenario of primary cell groups of different central units.

[0683] Optionally, the terminal device receives LTM candidate configuration information and / or terminal device dual-link configuration information sent by the second network device.

[0684] Optionally, the terminal device determines the secondary cell release indication based on the LTM candidate configuration information and / or the terminal device dual-link configuration information.

[0685] Optionally, the candidate cell identifier is used for the first network device to determine LTM candidate configuration information.

[0686] Optionally, the first network device processes the secondary node based on the secondary cell release indication in combination with the terminal device dual link information and / or LTM candidate configuration information.

[0687] Optionally, the terminal device dual link information is obtained by the first network device from the second network device.

[0688] Optionally, the terminal device dual-link information includes terminal device dual-link configuration information and / or terminal device dual-link configuration indication.

[0689] Optionally, the terminal device dual-link configuration information and / or the terminal device dual-link configuration indication is used to indicate whether the terminal device is configured with dual-link.

[0690] Optionally, the LTM candidate configuration information is locally acquired by the first network device.

[0691] Optionally, the LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0692] Optionally, the secondary cell release indication and / or the application candidate cell identifier are carried in the radio resource control reconfiguration completion signaling.

[0693] Optionally, the secondary cell release indication is used to indicate whether the terminal device releases the secondary cell group configuration.

[0694] Optionally, at least one of the secondary cell release indication, the secondary node retention indication, and the secondary node release indication is 1-bit information.

[0695] Optionally, the central unit identifier is used to determine whether it is an LTM handover between different central units.

[0696] Optionally, if at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the first condition, the first network device determines to retain the secondary cell configuration.

[0697] Optionally, the first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is retained, the LTM candidate configuration information includes the secondary cell group configuration, the LTM switching is determined to be the same central unit based on the central unit identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication.

[0698] Optionally, if at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

[0699] Optionally, the second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0700] Through the technical solution of this embodiment, the terminal device sends a secondary cell release indication and / or applies a candidate cell identifier, so that the first network device processes the secondary node based on the secondary cell release indication and / or the application of the candidate cell identifier, so that the first network device's processing of the secondary node is consistent with that of the terminal device, thereby reducing the switching delay and further improving the dual-link processing mechanism under LTM switching and / or continuous LTM switching.

[0701] Thirteenth embodiment

[0702] Referring to Figure 11, Figure 11 is a schematic diagram of the structure of a processing device provided in an embodiment of the present application. The device can be installed in or is the first network device in the above-mentioned method embodiment. The processing device shown in Figure 11 can be used to perform some or all of the functions in the method embodiment described in the above embodiment. As shown in Figure 11, the processing device 1100 includes:

[0703] The processing module 1101 is configured to process the secondary node based on at least one of the terminal device dual-link information, the LTM candidate configuration information, and the secondary cell release indication.

[0704] Optionally, the device further comprises at least one of the following:

[0705] receiving terminal device dual link information sent by the second network device;

[0706] Receiving a secondary cell release indication and / or an application candidate cell identifier sent by a terminal device;

[0707] Obtain LTM candidate configuration information from the local machine;

[0708] The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication;

[0709] The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0710] Optionally, the device further comprises at least one of the following:

[0711] The terminal device dual link configuration information and / or the terminal device dual link configuration indication is used to indicate whether the terminal device is configured with dual link;

[0712] The terminal device dual link configuration information is carried in the switching notification signaling;

[0713] The secondary cell release indication and / or the application candidate cell identifier are carried in the radio resource control reconfiguration completion signaling;

[0714] The secondary cell release indication is used to instruct the terminal device whether to release the secondary cell group configuration;

[0715] At least one of the secondary cell release indication, the secondary node retention indication, and the secondary node release indication is 1 bit of information;

[0716] The central unit identifier is used to determine whether it is a LTM switch for a different central unit;

[0717] The LTM candidate configuration is determined by applying the candidate cell identity.

[0718] Optionally, processing the secondary node based on at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication includes at least one of the following:

[0719] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the first condition, determining to retain the secondary cell configuration;

[0720] If at least one of the terminal equipment dual link information, the LTM candidate configuration information and the secondary cell release indication meets the second condition, it is determined to release the secondary cell configuration.

[0721] Optionally, the device further comprises at least one of the following:

[0722] The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM handover is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication;

[0723] The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0724] Optionally, the device further comprises at least one of the following:

[0725] In the case of determining to release the secondary cell configuration, initiating a secondary node release process;

[0726] In the case where it is determined to release the secondary cell configuration and there is no associated and / or configured secondary node, the secondary node release procedure is not initiated.

[0727] If it is determined that the secondary cell configuration is to be retained, the secondary node release process is not initiated;

[0728] Releasing the secondary cell configuration includes not applying the secondary cell group configuration and / or clearing the secondary cell group configuration;

[0729] The processing method is applied to the LTM handover scenario of primary cell groups of different central units.

[0730] The processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.

[0731] Fourteenth embodiment

[0732] Please refer to Figure 12, 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 is the second network device in the above-mentioned method embodiment. The processing device shown in Figure 12 can be used to perform some or all of the functions in the method embodiment described in the above embodiment. As shown in Figure 12, the control device 1200 includes:

[0733] The first sending module 1201 is configured to send dual-link information of the terminal device, so that the first network device processes the secondary node based on the dual-link information of the terminal device.

[0734] Optionally, the first network device processes the auxiliary node based on the dual-link information of the terminal device, including:

[0735] The first network device processes the secondary node based on the dual link information of the terminal device in combination with the LTM candidate configuration information and / or the secondary cell release indication.

[0736] Optionally, the device further comprises at least one of the following:

[0737] The secondary cell release indication is obtained by the first network device from the terminal device;

[0738] The secondary cell release indication is carried in the radio resource control reconfiguration completion signaling;

[0739] The secondary cell release indication is used to instruct the terminal device whether to release the secondary cell group configuration;

[0740] The LTM candidate configuration information is obtained locally by the first network device;

[0741] The LTM candidate configuration information is determined by the first network device according to the application candidate cell identifier;

[0742] The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication;

[0743] The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0744] Optionally, the first network device processes the secondary node based on the dual link information of the terminal device in combination with the LTM candidate configuration information and / or the secondary cell release indication, including at least one of the following:

[0745] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication satisfies a first condition, the first network device determines to retain the secondary cell configuration;

[0746] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

[0747] Optionally, the device further comprises at least one of the following:

[0748] The application candidate cell identifier is obtained by the first network device from the terminal device;

[0749] The candidate cell identifier is carried in the radio resource control reconfiguration completion signaling;

[0750] The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM handover is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication;

[0751] The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0752] The processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.

[0753] Fifteenth embodiment

[0754] Please refer to Figure 13, 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 is the terminal device in the above-mentioned method embodiment. The processing device shown in Figure 13 can be used to perform some or all of the functions in the method embodiment described in the above embodiment. As shown in Figure 13, the control device 1300 includes:

[0755] The second sending module 1301 is configured to send a secondary cell release indication and / or an applied candidate cell identifier, so that the first network device processes the secondary node based on the secondary cell release indication and / or the applied candidate cell identifier.

[0756] Optionally, the device further comprises at least one of the following:

[0757] Receiving LTM candidate configuration information and / or terminal device dual-link configuration information sent by the second network device;

[0758] Determine a secondary cell release indication based on LTM candidate configuration information and / or terminal device dual link configuration information;

[0759] The application candidate cell identifier is used by the first network device to determine LTM candidate configuration information.

[0760] Optionally, the first network device processes the secondary node based on the secondary cell release indication and / or applying the candidate cell identifier, including:

[0761] The first network device processes the secondary node based on the secondary cell release indication and in combination with the terminal device dual link information and / or LTM candidate configuration information.

[0762] Optionally, the device further comprises at least one of the following:

[0763] The terminal device dual link information is obtained by the first network device from the second network device;

[0764] The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication;

[0765] The LTM candidate configuration information is obtained locally by the first network device;

[0766] The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

[0767] Optionally, the device further comprises at least one of the following:

[0768] The terminal device dual link configuration information and / or the terminal device dual link configuration indication is used to indicate whether the terminal device is configured with dual link;

[0769] The secondary cell release indication and / or the application candidate cell identifier are carried in the radio resource control reconfiguration completion signaling;

[0770] The secondary cell release indication is used to instruct the terminal device whether to release the secondary cell group configuration;

[0771] At least one of the secondary cell release indication, the secondary node retention indication, and the secondary node release indication is 1 bit of information;

[0772] The central unit identifier is used to determine whether the LTM is switched to a different central unit.

[0773] Optionally, the first network device processes the secondary node based on the secondary cell release indication in combination with the terminal device dual link information and / or LTM candidate configuration information, including at least one of the following:

[0774] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication satisfies a first condition, the first network device determines to retain the secondary cell configuration;

[0775] If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

[0776] Optionally, the device further comprises at least one of the following:

[0777] The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM handover is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication;

[0778] The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching is determined to be a different central unit based on the central unit identifier, the LTM candidate configuration information does not include a secondary node retention indication, and the LTM candidate configuration information includes a secondary node release indication.

[0779] The processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.

[0780] Refer to Figure 14, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 14, the communication device 160 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 160 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.

[0781] The communication device 160 may include one or more processors 161, also referred to as processing units, which may perform certain control or processing functions. Processor 161 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.

[0782] Optionally, the processor 161 may also store instructions 163 or data (eg, intermediate data). Optionally, the instructions 163 may be executed by the processor 161 to enable the communication device 160 to execute the method corresponding to the terminal device or network device described in the above method embodiment.

[0783] Optionally, the communication device 160 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0784] Optionally, the communication device 160 may include one or more memories 162 , on which instructions 164 may be stored. The instructions may be executed on the processor 161 , so that the communication device 160 performs the method described in the above method embodiment.

[0785] Optionally, data may also be stored in the memory 162. The processor 161 and the memory 162 may be provided separately or integrated together.

[0786] Optionally, the communication device 160 may further include a transceiver 165 and / or an antenna 166. The processor 161 may be referred to as a processing unit, and controls the communication device 160 (terminal device, core network device, or wireless access network device). The transceiver 165 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 160.

[0787] Optionally, if the communication device 160 is used to implement operations corresponding to the terminal device in the above-mentioned embodiments, for example, the transceiver 165 can send a secondary cell release indication and / or apply a candidate cell identifier, so that the first network device processes the secondary node based on the secondary cell release indication and / or the application candidate cell identifier; and the processor 161 determines the secondary cell release indication based on the LTM candidate configuration information and / or the terminal device dual link configuration information.

[0788] Optionally, the specific implementation process of the processor 161 and the transceiver 165 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0789] Optionally, if the communication device 160 is used to implement operations corresponding to the network devices in the above embodiments, for example, the transceiver 165 may send terminal device dual link information so that the first network device processes the secondary node based on the terminal device dual link information.

[0790] Optionally, the specific implementation process of the processor 161 and the transceiver 165 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0791] The processor 161 and transceiver 165 described in this application may 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 161 and transceiver 165 may 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.

[0792] 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.

[0793] 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 14. The communication device may be an independent device or may be part of a larger device.

[0794] An embodiment of the present application further 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.

[0795] 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.

[0796] 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.

[0797] An embodiment of the present application further provides a computer-readable storage medium, on which a processing program is stored. When the processing program is executed by a processor, the steps of the processing method in any of the above embodiments are implemented.

[0798] In the embodiments of the communication device and computer-readable storage medium provided in the embodiments of the present application, all technical features of any of the above-mentioned control 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.

[0799] 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.

[0800] 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.

[0801] 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.

[0802] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0803] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0804] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0805] 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.

[0806] 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.

[0807] 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.

[0808] 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.

[0809] 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)).

[0810] 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, wherein: Applied to a first network device, comprising the steps of: S3: Processing the secondary node based on at least one of the terminal device dual link information, the LTM candidate configuration information and the secondary cell release indication.

2. The method of claim 1, wherein: Also includes at least one of the following: Receiving terminal device dual link information sent by the second network device; Receiving a secondary cell release indication and / or an application candidate cell identifier sent by a terminal device; Get LTM candidate configuration information from the local; The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication; The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

3. The method of claim 2, wherein: Also includes at least one of the following: The terminal device dual link configuration information and / or the terminal device dual link configuration indication are used to indicate whether the terminal device is configured with dual link; The dual link configuration information of the terminal device is carried in the switching notification signaling; The secondary cell release indication and / or the application candidate cell identifier are carried in the radio resource control reconfiguration completion signaling; The secondary cell release indication is used to indicate whether the terminal device releases the secondary cell group configuration; At least one of the secondary cell release indication, the secondary node retention indication and the secondary node release indication is 1 bit of information; The central unit identification is used to determine whether it is a LTM switch for different central units; The LTM candidate configuration is determined by applying the candidate cell identity.

4. The method of claim 1, wherein: Step S3 includes at least one of the following: If at least one of the terminal device dual link information, the LTM candidate configuration information, and the secondary cell release indication meets the first condition, it is determined to retain the secondary cell configuration; If at least one of the terminal equipment dual link information, the LTM candidate configuration information and the secondary cell release indication meets the second condition, it is determined to release the secondary cell configuration.

5. The method of claim 4, wherein: Also includes at least one of the following; The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM switching is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication; The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching of different central units is determined based on the central unit identifier, the LTM candidate configuration information does not include the secondary node retention indication, and the LTM candidate configuration information includes the secondary node release indication.

6. The method of claim 4, wherein: Also includes at least one of the following: In the case of determining to release the secondary cell configuration, initiating a secondary node release procedure; In the case where it is determined to retain the secondary cell configuration, the secondary node release process is not initiated; Releasing the secondary cell configuration includes not applying the secondary cell group configuration and / or clearing the secondary cell group configuration; The processing method is applied to the LTM switching scenario of the main cell groups of different central units.

7. A processing method, wherein: Applied to a second network device, comprising the steps of: S1: Sending dual-link information of the terminal device so that the first network device processes the auxiliary node based on the dual-link information of the terminal device.

8. The method of claim 7, wherein: The first network device processes the auxiliary node based on the dual-link information of the terminal device, including: The first network device processes the secondary node based on the dual link information of the terminal device in combination with the LTM candidate configuration information and / or the secondary cell release indication.

9. The method of claim 8, wherein: Also includes at least one of the following: The secondary cell release indication is obtained by the first network device from the terminal device; The secondary cell release indication is carried in the radio resource control reconfiguration completion signaling; The secondary cell release indication is used to indicate whether the terminal device releases the secondary cell group configuration; The LTM candidate configuration information is locally acquired by the first network device; The LTM candidate configuration information is determined by the first network device according to the application candidate cell identifier; The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication; The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

10. The method of claim 8, wherein: The first network device processes the secondary node based on the dual link information of the terminal device in combination with the LTM candidate configuration information and / or the secondary cell release indication, including at least one of the following: If at least one of the dual link information of the terminal device, the LTM candidate configuration information, and the secondary cell release indication satisfies the first condition, the first network device determines to retain the secondary cell configuration; If at least one of the terminal equipment dual link information, the LTM candidate configuration information and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

11. The method of claim 10, wherein: Also includes at least one of the following: The application candidate cell identifier is obtained by the first network device from the terminal device; The candidate cell identifier is carried in the radio resource control reconfiguration completion signaling; The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM switching is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication; The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching of different central units is determined based on the central unit identifier, the LTM candidate configuration information does not include the secondary node retention indication, and the LTM candidate configuration information includes the secondary node release indication.

12. A processing method, wherein: Applied to terminal equipment, including the steps of: S2: Send a secondary cell release indication and / or apply a candidate cell identifier, so that the first network device processes the secondary node based on the secondary cell release indication and / or apply the candidate cell identifier.

13. The method of claim 12, wherein: Also includes at least one of the following: Receiving LTM candidate configuration information and / or terminal device dual link configuration information sent by the second network device; Determine a secondary cell release indication according to the LTM candidate configuration information and / or the terminal equipment dual link configuration information; The application candidate cell identifier is used by the first network device to determine LTM candidate configuration information.

14. The method of claim 13, wherein: The first network device processes the secondary node based on the secondary cell release indication and / or by applying the candidate cell identifier, including: The first network device processes the secondary node based on the secondary cell release indication in combination with the dual link information of the terminal device and / or the LTM candidate configuration information.

15. The method of claim 14, wherein: Also includes at least one of the following: The terminal device dual link information is obtained by the first network device from the second network device; The terminal device dual link information includes terminal device dual link configuration information and / or terminal device dual link configuration indication; The LTM candidate configuration information is locally acquired by the first network device; The LTM candidate configuration information includes at least one of a secondary cell group configuration, a secondary node retention indication, a secondary node release indication, and a central unit identifier.

16. The method of claim 15, wherein: Also includes at least one of the following: The terminal device dual link configuration information and / or the terminal device dual link configuration indication are used to indicate whether the terminal device is configured with dual link; The secondary cell release indication and / or the application candidate cell identifier are carried in the radio resource control reconfiguration completion signaling; The secondary cell release indication is used to indicate whether the terminal device releases the secondary cell group configuration; At least one of the secondary cell release indication, the secondary node retention indication and the secondary node release indication is 1 bit of information; The central unit identifier is used to determine whether the LTM is switched to a different central unit.

17. The method of claim 14, wherein: The first network device processes the secondary node based on the secondary cell release indication in combination with the dual link information of the terminal device and / or the LTM candidate configuration information, including at least one of the following: If at least one of the dual link information of the terminal device, the LTM candidate configuration information, and the secondary cell release indication satisfies the first condition, the first network device determines to retain the secondary cell configuration; If at least one of the terminal equipment dual link information, the LTM candidate configuration information and the secondary cell release indication meets the second condition, the first network device determines to release the secondary cell configuration.

18. The method of claim 17, wherein: Also includes at least one of the following: The first condition is met, including at least one of the following: the terminal device is configured with dual link, the secondary cell release indication is reserved, the LTM candidate configuration information includes the secondary cell group configuration, the LTM switching is determined to be the same central cell according to the central cell identifier, the LTM candidate configuration information includes the secondary node retention indication, and the LTM candidate configuration information does not include the secondary node release indication; The second condition is met, including at least one of the following: the terminal device is not configured with dual link, the secondary cell release indication is release, the LTM candidate configuration information does not include the secondary cell group configuration, the LTM switching of different central units is determined based on the central unit identifier, the LTM candidate configuration information does not include the secondary node retention indication, and the LTM candidate configuration information includes the secondary node release indication.

19. A communication device, wherein: include: 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 the processing method according to claim 1, 7 or 12 when executed by the processor.

20. A storage medium, wherein: The storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the processing method according to claim 1, 7 or 12 are implemented.

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