Auxiliary node counter determination method, communication equipment and storage medium

Abstract

The invention discloses an auxiliary node counter determination method, communication equipment and a storage medium. The auxiliary node counter determination method comprises the following steps: determining an auxiliary node counter based on first information; through the technical scheme of the invention, the terminal equipment can avoid unnecessary auxiliary node counter updating, and / or when the auxiliary node counter needs to be updated, the auxiliary node counter is not repeatedly used and / or the auxiliary node counter is monotonically increased.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method for determining a secondary node counter, a communication device, and a storage medium. Background Art

[0002] In the existing protocol, MN (Master Node) provides sk-counter (secondary node counter) to the terminal device to calculate the key S-KgNB of SN (Secondary Node), and MN calculates S-KgNB based on the sk-counter provided to the terminal device and provides it to SN to keep the S-KgNB of the terminal device and SN consistent. Among them, sk-counter is used to calculate S-KgNB and needs to increase monotonically. In addition, when the security key of the bear changes due to a change in the termination point, the corresponding PDCP (Packet Data Convergence Protocol) and RLC (Radio Link Control) entities need to be rebuilt.

[0003] In the process of conceiving and implementing this application, the inventors found that: for intra-SN SCG selective activation (selective activation of secondary cell groups within secondary nodes), it is necessary to avoid updating sk-counter, but the terminal device cannot distinguish whether the current switch is intra-SN / inter-SN (intra-secondary node / inter-secondary node). And / or, the current R18 supports NR-DC (NR-NR Dual Connectivity) selective activation of cell groups that do not require reconfiguration, and the candidate cell configuration needs to be configured to the terminal device in advance (including configuration of sk-counter). Due to the uncertainty of the terminal device's mobile path, the sk-counter may be reused or not monotonically increasing.

[0004] Therefore, a new method for determining the auxiliary node counter is needed so that the terminal device can avoid unnecessary auxiliary node counter updates and / or, when the auxiliary node counter needs to be updated, the auxiliary node counter is not reused and / or the auxiliary node counter is made monotonically increasing.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the invention

[0006] The main purpose of the present application is to provide a method for determining a secondary node counter, a communication device and a storage medium, so that the terminal device can avoid unnecessary updates of the secondary node counter, and / or, when the secondary node counter needs to be updated, the secondary node counter is not reused and / or the secondary node counter is made monotonically increasing.

[0007] The present application proposes a method for determining a secondary node counter, which can be applied to a terminal device (such as a mobile phone), comprising the steps of:

[0008] S20: Determine a secondary node counter based on the first information.

[0009] Optionally, the first information includes at least one of the following:

[0010] The delta value of the slave node counter;

[0011] Candidate cell grouping information;

[0012] List of secondary node counter values.

[0013] Optionally, the method further comprises at least one of the following:

[0014] The candidate cells share the delta value of the auxiliary node counter;

[0015] The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together;

[0016] Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value;

[0017] Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values;

[0018] The auxiliary node counter values ​​in the auxiliary node counter value list are monotonically increasing;

[0019] The secondary node counter delta value and / or the secondary node counter value list are provided via the reference configuration.

[0020] Optionally, the step S20 includes at least one of the following:

[0021] When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule;

[0022] When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

[0023] Optionally, determining the secondary node counter based on the first rule includes at least one of the following: setting the secondary node counter to 0, setting the secondary node counter to a secondary node counter delta value, and setting the secondary node counter to a first value in a secondary node counter value list.

[0024] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0025] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0026] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0027] Optionally, the method further comprises at least one of the following:

[0028] If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover;

[0029] If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes;

[0030] When the switching of the candidate cell condition primary and secondary cells is switching between secondary nodes, the secondary node counter is updated, including: updating the secondary node counter in sequence based on the secondary node counter delta value and / or the secondary node counter value list.

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

[0032] Calculate or update the secondary node key based on the secondary node counter;

[0033] The selected candidate cell information and / or the secondary node counter are sent to the primary node.

[0034] The present application also proposes a method for determining a secondary node counter, which can be applied to a network device (such as a base station), comprising the steps of:

[0035] S10, sending first information so that the terminal device determines the secondary node counter based on the first information.

[0036] Optionally, the first information includes at least one of the following:

[0037] The delta value of the slave node counter;

[0038] Candidate cell grouping information;

[0039] List of secondary node counter values.

[0040] Optionally, the method further comprises at least one of the following:

[0041] The candidate cells share the delta value of the auxiliary node counter;

[0042] The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together;

[0043] Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value;

[0044] Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values;

[0045] The auxiliary node counter values ​​in the auxiliary node counter value list are monotonically increasing;

[0046] The secondary node counter delta value and / or the secondary node counter value list are provided via the reference configuration.

[0047] Optionally, before step S10, the method further includes the following steps:

[0048] First information is determined or generated.

[0049] Optionally, the determining or generating the first information includes at least one of the following:

[0050] Grouping the candidate primary and secondary cells selected by the secondary node received, and generating candidate cell grouping information according to the grouping result;

[0051] Configure the secondary node counter delta value for the candidate primary and secondary cells selected by the received secondary node;

[0052] A reference configuration is generated, wherein the reference configuration provides a secondary node counter delta value and / or a secondary node counter value list.

[0053] Optionally, the method further comprises at least one of the following:

[0054] Receiving candidate cell information and / or secondary node counter sent by a terminal device;

[0055] The secondary node counter is updated according to the same rule or based on the received secondary node counter, and the secondary node key is updated based on the updated secondary node counter, and the updated secondary node key is sent to the corresponding candidate cell.

[0056] Optionally, the terminal device determines the secondary node counter based on the first information, including at least one of the following:

[0057] When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule;

[0058] When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

[0059] Optionally, determining the secondary node counter based on the first rule includes at least one of the following:

[0060] The secondary node counter is set to 0, the secondary node counter is set to the secondary node counter delta value, and the secondary node counter is set to the first value in the secondary node counter value list.

[0061] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0062] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0063] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0064] Optionally, the method further comprises at least one of the following:

[0065] If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover;

[0066] If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes;

[0067] The secondary node counters are updated in sequence based on the secondary node counter delta values ​​and / or the secondary node counter value list.

[0068] The present application also provides a secondary node counter determination device, comprising:

[0069] The determination module is used to determine the secondary node counter based on the first information.

[0070] The present application also proposes a secondary node counter determination device, comprising:

[0071] The sending module is used to send first information so that the terminal device determines the auxiliary node counter based on the first information.

[0072] The present application also provides a communication device, including: a memory, a processor, and a secondary node counter determination program stored in the memory and executable on the processor, wherein the secondary node counter determination program implements any of the secondary node counter determination methods described above when executed by the processor.

[0073] The communication equipment mentioned in this application can be a terminal device (such as a smart terminal, specifically a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified in the context.

[0074] The present application also provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, any of the above methods for determining a secondary node counter is implemented.

[0075] The technical solution of the present application is: the network device sends a first message, and the terminal device determines the auxiliary node counter based on the first message. Through the technical solution of the present application, the terminal device can avoid unnecessary updates of the auxiliary node counter, and / or, when the auxiliary node counter needs to be updated, the auxiliary node counter is not reused and / or the auxiliary node counter is made monotonically increasing. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and are used together with the specification 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 drawings required for use in the description of the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0077] Figure 1 A schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0078] Figure 2 A communication network system architecture diagram provided for an embodiment of the present application;

[0079] Figure 3 Schematic diagram of the hardware structure of the controller 140 involved in the embodiment of the secondary node counter determination method of the present application;

[0080] Figure 4 A schematic diagram of the hardware structure of the network node 150 involved in the embodiment of the secondary node counter determination method of the present application;

[0081] Figure 5 This is a schematic diagram of the interaction process between a terminal device and a network device in the first embodiment of the secondary node counter determination method of the present application;

[0082] Figure 6 Schematic diagram of the interaction process between the terminal device and the network device in the second embodiment of the secondary node counter determination method of the present application

[0083] Figure 7 This is a scenario diagram of the third embodiment of the method for determining a secondary node counter of the present application;

[0084] Figure 8 This is a schematic diagram of a scenario of the fourth embodiment of the method for determining a secondary node counter of the present application;

[0085] Fig. 9 This is a schematic diagram of a scenario of the fifth embodiment of the method for determining a secondary node counter of the present application;

[0086] Fig.10 This is a schematic diagram of the interaction process between a terminal device and a network device in the sixth embodiment of the secondary node counter determination method of the present application.

[0087] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0088] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0089] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes 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 "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, 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.

[0090] It should be understood that, although the terms first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this article, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at the time of..." or "when..." or "in response to determination". Furthermore, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising", "including" indicate that there are described features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or", "and / or", "including at least one of the following" etc. used in this application can 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 only occur when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0091] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of 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 other steps or at least a portion of the sub-steps or stages of other steps.

[0092] 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 determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0093] It should be noted that in this article, step codes such as S10 and S20 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the sequence. When implementing the step, those skilled in the art may execute S20 first and then S10, etc., but these should all be within the scope of protection of this application.

[0094] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0095] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0096] The communication equipment mentioned in this application can be a terminal device (such as a mobile terminal, specifically a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified in the context.

[0097] Optionally, the terminal device may be implemented in various forms. For example, the terminal device described in the present application may include smart terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminals such as digital TVs and desktop computers.

[0098] The following description will be made by taking a mobile terminal as an example, and those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the embodiments of the present application can also be applied to fixed-type terminals.

[0099] See also 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: RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit 103, A / V (audio / video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111 and other components. Those skilled in the art can understand that Figure 1 The structure of the mobile terminal shown in the figure does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0100] Combine the following Figure 1 The following is a detailed introduction to the various components of the mobile terminal:

[0101] The radio frequency unit 101 can be used for receiving and sending signals during information transmission or communication. Specifically, after receiving the downlink information of the base station, it is sent to the processor 110 for processing; in addition, the uplink data is sent to the base station. Generally, the radio frequency unit 101 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 101 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communications can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G and 6G, etc.

[0102] WiFi is a short-range wireless transmission technology. Mobile terminals can help users send and receive emails, browse web pages, and access streaming media through WiFi module 102. It provides users with wireless broadband Internet access. Figure 1 The WiFi module 102 is shown, but it is understandable that it is not an essential component of the mobile terminal and can be omitted as needed without changing the essence of the invention.

[0103] The audio output unit 103 can convert the 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, etc. Moreover, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0104] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processor (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 106. The image frame processed by the graphics processor 1041 can be stored in the memory 109 (or other storage medium) or sent via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a telephone call mode, a recording mode, a voice recognition mode, and other operating modes, and can process such sound into audio data. The processed audio (voice) data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 can implement various types of noise elimination (or suppression) algorithms to eliminate (or suppress) noise or interference generated in the process of receiving and sending audio signals.

[0105] 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 on 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.

[0106] 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.

[0107] The user input unit 107 can be used to receive input digital or character information, and to generate key signal input related to the 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 the user's touch operation on or near it (such as the user's operation on the touch panel 1071 or near the touch panel 1071 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device 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 orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 110, and can receive and execute the command sent by the processor 110. In addition, the touch panel 1071 can be implemented in 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, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, etc., which are not specifically limited here.

[0108] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Then, the processor 110 provides corresponding visual output on the display panel 1061 according to the type of touch event. Figure 1 In the figure, the touch panel 1071 and the display panel 1061 are used as two independent components to implement the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to implement the input and output functions of the mobile terminal, which is not limited here.

[0109] 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.

[0110] The memory 109 can be used to store software programs and various data. The memory 109 can mainly include a program storage area and a data storage area. Optionally, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0111] The processor 110 is the control center of the mobile terminal. It uses various interfaces and lines to connect various parts of the entire mobile terminal. It executes various functions of the mobile terminal and processes data by running or executing software programs and / or modules stored in the memory 109, and calling data stored in the memory 109, so as to monitor the mobile terminal as a whole. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 110.

[0112] 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 via a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system.

[0113] although Figure 1 Not shown, the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail here.

[0114] In order 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.

[0115] See also Figure 2 , Figure 2 A communication network system architecture diagram is provided for an embodiment of the present application, wherein the communication network system is an LTE system of universal mobile communication technology, and the LTE 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 for communication.

[0116] Optionally, UE201 may be the above-mentioned terminal 100, which will not be described in detail here.

[0117] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 , etc. Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface), and eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide UE 201 with access to EPC 203 .

[0118] EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, PGW (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, and provides bearer and connection management. HSS 2032 is used to provide some registers to manage functions such as home location register (not shown in the figure), and store some 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, which selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0119] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem) or other IP services.

[0120] Although the above introduction takes the LTE system as an example, those skilled in the art should know that the present application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation here.

[0121] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0122] Figure 3 The hardware structure diagram of a controller 140 provided in the present application is shown in FIG. 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 executed by the controller in the first embodiment of the above method. The implementation principle and beneficial effects are similar and will not be described in detail here.

[0123] 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.

[0124] Figure 4 The hardware structure diagram of a network node 150 provided in the present application is shown in FIG. The network node 150 includes: a memory 1501 and a processor 1502, the memory 1501 is used to store program instructions, and the processor 1502 is used to call the program instructions in the memory 1501 to execute the steps performed by the first node in the first embodiment of the above method, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0125] 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.

[0126] The above-mentioned integrated module implemented in the form of a software function module can be stored in a computer-readable storage medium. The above-mentioned software function module is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the methods of various embodiments of the present application.

[0127] Technical terms involved in the embodiments of this application:

[0128] RLC: Radio Link Control, wireless link control;

[0129] PDCP: Packet Data Convergence Protocol, packet data convergence protocol;

[0130] intra-SN / inter-SN: intra-SN / inter-SN;

[0131] NR-DC: NR-NR Dual Connectivity

[0132] NR: New Radio, New Air;

[0133] SN: Secondary Node, secondary node;

[0134] MN: Master Node, master node;

[0135] sk-counter: secondary node counter;

[0136] CPA: Conditional PSCell Addition, conditional primary and secondary cell addition;

[0137] CPC: Conditional PSCell Change, conditional primary and secondary cell switching;

[0138] PCell: Primary Cell, primary cell;

[0139] PSCell: Primary SCG Cell, primary and secondary cell;

[0140] RRC Reconfiguration: Radio Resource ControlReconfiguration, RRC reconfiguration;

[0141] DC: Dual Connectivity.

[0142] First embodiment

[0143] Reference Figure 5 As shown, the first embodiment of the present application proposes a method for determining a secondary node counter, comprising the steps of:

[0144] S10, the network device sends first information so that the terminal device determines the secondary node counter based on the first information;

[0145] S20, the terminal device determines the secondary node counter based on the first information.

[0146] Optionally, the first information may be at least one of the following: a secondary node counter delta value, candidate cell grouping information, and a secondary node counter value list.

[0147] Optionally, the network device is a master node (MN).

[0148] Optionally, the network device sends the first information to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to initiate candidate cell condition evaluation.

[0149] Optionally, when the terminal device evaluates that a candidate cell meets the execution condition, the first information corresponding to the candidate cell is applied to calculate or update the auxiliary node counter.

[0150] Optionally, the method further comprises at least one of the following:

[0151] All candidate cells share the auxiliary node counter delta value;

[0152] The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together;

[0153] Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value;

[0154] Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values;

[0155] The secondary node counter values ​​in the secondary node counter value list are monotonically increasing.

[0156] Optionally, the step S20 includes at least one of the following:

[0157] When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule;

[0158] When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

[0159] Optionally, determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, the secondary node counter is set to a secondary node counter delta value, and the secondary node counter is set to a first value in a secondary node counter value list.

[0160] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0161] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0162] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0163] Optionally, the method further comprises at least one of the following:

[0164] If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover;

[0165] If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes;

[0166] When the switching of the candidate cell condition primary and secondary cells is switching between secondary nodes, the secondary node counter is updated, including: updating the secondary node counter in sequence based on the secondary node counter delta value and / or the secondary node counter value list.

[0167] In the technical solution of this embodiment, the network device sends the first information, and the terminal device determines the auxiliary node counter based on the first information. Through the technical solution of this embodiment, the terminal device can avoid unnecessary updates of the auxiliary node counter, and / or, when the auxiliary node counter needs to be updated, the auxiliary node counter is not reused and / or the auxiliary node counter is made monotonically increasing.

[0168] Second embodiment

[0169] Reference Figure 6 As shown, based on any of the above embodiments, the second embodiment of the present application proposes a method for determining a secondary node counter: a network device sends first information, and a terminal device determines a secondary node counter based on the first information.

[0170] Optionally, the method further comprises:

[0171] Step S21, the terminal device calculates or updates the secondary node key based on the secondary node counter;

[0172] Step S22: The terminal device sends the selected candidate cell information and / or auxiliary node counter to the network device.

[0173] Step S11, the network device receives candidate cell information and / or secondary node counter sent by the terminal device;

[0174] Step S12: the network device updates the secondary node counter according to the same rule or based on the received secondary node counter, updates the secondary node key based on the updated secondary node counter, and sends the updated secondary node key to the corresponding candidate cell.

[0175] Optionally, the first information may be at least one of the following: a secondary node counter delta value, candidate cell grouping information, and a secondary node counter value list.

[0176] Optionally, the network device is a master node (MN).

[0177] Optionally, the network device sends the first information to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to initiate candidate cell condition evaluation.

[0178] Optionally, when the terminal device evaluates that a candidate cell meets the execution condition, the first information corresponding to the candidate cell is applied to calculate or update the auxiliary node counter.

[0179] Optionally, the first information includes a reference configuration, and the secondary node counter delta value and / or the secondary node counter value list is provided by the reference configuration.

[0180] Optionally, the delta value of the secondary node counter represents a rule for increasing the secondary node counter when a conditional primary or secondary cell is added or switched in a terminal device.

[0181] Optionally, the method further comprises at least one of the following:

[0182] All candidate cells share the auxiliary node counter delta value;

[0183] The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together;

[0184] Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value;

[0185] Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values;

[0186] The secondary node counter values ​​in the secondary node counter value list are monotonically increasing.

[0187] Optionally, the terminal device determines the secondary node counter based on the first information, including at least one of the following:

[0188] When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule;

[0189] When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

[0190] Optionally, determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, the secondary node counter is set to a secondary node counter delta value, and the secondary node counter is set to a first value in a secondary node counter value list.

[0191] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0192] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0193] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0194] Optionally, the method further comprises at least one of the following:

[0195] If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover;

[0196] If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes;

[0197] When the switching of the candidate cell condition primary and secondary cells is switching between secondary nodes, the secondary node counter is updated, including: updating the secondary node counter in sequence based on the secondary node counter delta value and / or the secondary node counter value list.

[0198] Optionally, after determining the secondary node counter, the terminal device sends the currently selected candidate cell information and / or the applied secondary node counter to the network device through RRCReconfigurationComplete.

[0199] The network device receives the candidate cell information and / or auxiliary node counter sent by the terminal device, updates the auxiliary node counter according to the same rule or the received auxiliary node counter, updates the auxiliary node key based on the updated auxiliary node counter, and sends the updated auxiliary node key to the corresponding candidate cell.

[0200] In the technical solution of this embodiment, the network device sends the first information, and the terminal device determines the auxiliary node counter based on the first information. Through the technical solution of this embodiment, the terminal device can avoid unnecessary updates of the auxiliary node counter, and / or, when the auxiliary node counter needs to be updated, the auxiliary node counter is not reused and / or the auxiliary node counter is made monotonically increasing.

[0201] Third embodiment

[0202] Based on any of the above embodiments, a third embodiment of the present application proposes a method for determining a secondary node counter, the method comprising: a network device sends first information, and a terminal device determines a secondary node counter based on the first information.

[0203] In this embodiment, all candidate cells share a secondary node counter delta value, and the terminal device determines the secondary node counter based on the secondary node counter delta value and candidate cell grouping information.

[0204] Optionally, the first information may be at least one of the following: a delta value of a secondary node counter and candidate cell grouping information.

[0205] Optionally, the network device is a master node (MN).

[0206] Optionally, the network device sends the first information to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to initiate candidate cell condition evaluation.

[0207] Optionally, when the terminal device evaluates that a candidate cell meets the execution condition, the first information corresponding to the candidate cell is applied to calculate or update the auxiliary node counter.

[0208] Optionally, the first information includes a reference configuration, and the auxiliary node counter delta value is provided by the reference configuration.

[0209] Optionally, the delta value of the secondary node counter represents a rule for increasing the secondary node counter when a conditional primary or secondary cell is added or switched in a terminal device.

[0210] Optionally, all candidate cells share the secondary node counter delta value.

[0211] Optionally, the candidate cells in the same secondary node are grouped together, and the candidate cells in different secondary nodes are grouped together.

[0212] Optionally, when the terminal device performs conditional addition of candidate cells as primary and secondary cells, the secondary node counter is determined based on the first rule.

[0213] Optionally, when the terminal device performs conditional primary and secondary cell switching of the candidate cell, the secondary node counter is determined based on the second rule.

[0214] Optionally, determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, and the secondary node counter is set to a secondary node counter delta value.

[0215] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0216] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0217] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0218] Optionally, if the candidate cell is in the same group as the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover.

[0219] Optionally, if the candidate cell is not in the same group as the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes.

[0220] Optionally, when the switching between the primary and secondary cells under the candidate cell condition is switching between secondary nodes, updating the secondary node counter includes: updating the secondary node counter based on a delta value of the secondary node counter.

[0221] Optionally, the network device is taken as MN (master node) for example:

[0222] The MN provides sk_counter_delta (secondary node counter delta value) in the reference configuration, that is, all candidate cell configurations share sk_counter_delta.

[0223] Optionally, sk_counter_delta represents a rule for increasing the secondary node counter when a conditional primary or secondary cell is added or switched in the terminal device, that is, sk_counter_new=sk_counter_current+sk_counter_delta.

[0224] Optionally, after receiving the candidate PSCells (primary and secondary cells) selected by each candidate SN (secondary node), the MN groups the candidate PSCells, groups the candidate PSCells belonging to the same SN into one group, and allocates a group ID.

[0225] Optionally, the MN sends the first information carrying the candidate cell grouping information and / or the reference configuration to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to start the candidate cell condition evaluation.

[0226] Optionally, the terminal device evaluates that a candidate cell meets the execution condition, applies the first information of the corresponding candidate cell, and sk-counter can be determined according to any of the following rules:

[0227] If the current terminal device is not in the DC state, that is, the PSCell is not added, sk-counter=0 or sk-counter=sk_counter_delta.

[0228] If the candidate cell and the current PSCell belong to the same SN, the sk-counter uses the previously applied sk-counter, that is, sk-counter = sk_counter_current;

[0229] If the candidate cell and the current PSCell do not belong to the same SN, the sk_counter is monotonically increased based on the previously applied sk_counter, that is, sk-counter = sk_counter_current + sk_counter_delta.

[0230] Optionally, the terminal device sends the candidate cell information currently selected by the terminal device and / or the determined sk-counter to the MN through RRCReconfigurationComplete.

[0231] Optionally, the MN updates the S-KgNB based on the same rule or the received sk-counter and sends it to the corresponding candidate cell.

[0232] Reference Figure 7 As shown, combined Figure 7 In the scenario shown, the process of the method for determining the secondary node counter in this embodiment is described as follows:

[0233] 1. The current UE is in DC (dual connection) state, and the serving cells are PCell and PSCell. The sk-counter currently used by PSCell is sk_counter_old.

[0234] 2. The network device decides to start the R18 selective activation cell group function. The candidate cells are PSCell (that is, the current serving cell is also a candidate cell), PSCell1, PSCell2, PSCell3, PSCell4, and PSCell5.

[0235] PSCell, PSCell1, and PSCell2 belong to SN1, PSCell3 and PSCell4 belong to SN2, and PSCell5 belongs to SN3.

[0236] 3. The MN generates or determines a reference configuration, which includes sk_counter_delta and groups candidate cells, where PSCell, PSCell1, and PSCell2 form a group, PSCell3 and PSCell4 form a group, and PSCell5 forms another group.

[0237] The MN sends the first message carrying the reference configuration and the candidate cell grouping information to the UE via RRCReconfiguration. After receiving the first message, the UE starts to start the candidate cell condition evaluation.

[0238] 4. The UE evaluates that PSCell1 meets the execution condition and applies the first information of the corresponding candidate cell (ie, PSCell1).

[0239] The UE determines that PSCell1 and the current serving PSCell belong to the same group according to the candidate cell grouping information, and then uses the previously applied sk-counter, that is, sk-counter = sk_counter_old.

[0240] 5. The UE sends the candidate cell information (i.e., PSCell1) currently selected by the UE and / or the applied sk-counter to the MN through RRCReconfigurationComplete. The MN updates the S-KgNB based on the same rule or the received sk-counter and sends it to the corresponding candidate cell.

[0241] 6. The UE continues to initiate candidate cell condition evaluation.

[0242] The UE evaluates that PSCell2 meets the execution condition and applies the first information corresponding to the candidate cell (ie, PSCell2).

[0243] The UE determines that PSCell2 and the currently serving PSCell1 belong to the same group according to the candidate cell grouping information, and then uses the previously applied sk-counter, that is, sk-counter = sk_counter_old.

[0244] 7. The UE sends the candidate cell information (ie, PSCell2) currently selected by the UE and / or the applied sk-counter to the MN through RRCReconfigurationComplete.

[0245] The MN updates the S-KgNB based on the updated sk-counter and sends it to the corresponding candidate cell.

[0246] 8. The UE continues to initiate candidate cell condition evaluation.

[0247] The UE evaluates that PSCell3 meets the execution condition and applies the first information of the corresponding candidate cell (ie, PSCell3).

[0248] The UE determines, based on the candidate cell grouping information, that PSCell3 and the currently serving PSCell2 do not belong to the same group, and the sk-counter is incremented, that is, sk-counter = sk_counter_old + sk_counter_delta.

[0249] 9. The UE sends the candidate cell information (ie, PSCell3) currently selected by the UE and / or the applied sk-counter to the MN through RRCReconfigurationComplete.

[0250] The MN updates the S-KgNB based on the updated sk-counter and sends it to the corresponding candidate cell.

[0251] 10. The UE continues to initiate candidate cell condition evaluation.

[0252] The UE evaluates whether the PSCell meets the execution condition and applies the first information of the corresponding candidate cell (ie, the PSCell).

[0253] The UE determines that the PSCell and the currently serving PSCell3 do not belong to the same group based on the candidate cell grouping information, and the sk-counter is incremented on the current basis, that is, sk-counter = sk_counter_current + sk_counter_delta.

[0254] 11. The UE sends the candidate cell information currently selected by the UE and / or the applied sk-counter to the MN through RRCReconfigurationComplete.

[0255] 12. MN updates S-KgNB based on the same rule or the received sk-counter and sends it to the corresponding candidate cell.

[0256] In the technical solution of this embodiment, the network device sends the first information, the terminal device determines the auxiliary node counter based on the first information, all candidate cells share the auxiliary node counter delta value, and the terminal device determines the auxiliary node counter based on the auxiliary node counter delta value and the candidate cell grouping information. Through the technical solution of this embodiment, the terminal device does not need the network to reconfigure the sk-counter in supporting CPA / subsequent CPC, which can avoid unnecessary updates of the auxiliary node counter, and / or, when the auxiliary node counter needs to be updated, the auxiliary node counter is not reused and / or the auxiliary node counter is made monotonically increasing.

[0257] Fourth embodiment

[0258] Based on any of the above embodiments, the fourth embodiment of the present application proposes a method for determining a secondary node counter:

[0259] The network device sends first information, and the terminal device determines the auxiliary node counter based on the first information.

[0260] In this embodiment, each candidate cell is respectively configured with a secondary node counter delta value. Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value; and candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values.

[0261] Optionally, the first information may be: a delta value of a secondary node counter.

[0262] Optionally, the network device is a master node (MN).

[0263] Optionally, the network device sends the first information to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to initiate candidate cell condition evaluation.

[0264] Optionally, when the terminal device evaluates that a candidate cell meets the execution condition, the first information corresponding to the candidate cell is applied to calculate or update the auxiliary node counter.

[0265] Optionally, the delta value of the secondary node counter represents a rule for increasing the secondary node counter when a conditional primary or secondary cell is added or switched in a terminal device.

[0266] Optionally, candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value.

[0267] Optionally, candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values.

[0268] Optionally, when the terminal device performs conditional addition of candidate cells as primary and secondary cells, the secondary node counter is determined based on the first rule.

[0269] Optionally, when the terminal device performs conditional primary and secondary cell switching of the candidate cell, the secondary node counter is determined based on the second rule.

[0270] Optionally, determining the auxiliary node counter based on the first rule includes at least one of the following: the auxiliary node counter is set to 0, and the auxiliary node counter delta value.

[0271] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0272] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0273] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0274] Optionally, if the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cells, it is determined to be an intra-secondary node handover.

[0275] Optionally, if the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes.

[0276] Optionally, when the switching between the primary and secondary cells under the candidate cell condition is switching between secondary nodes, updating the secondary node counter includes: updating the secondary node counter based on a delta value of the secondary node counter.

[0277] Optionally, the network device is taken as MN (master node) for example:

[0278] After receiving the candidate PSCells selected by each candidate SN, the MN configures sk_counter_delta for each candidate PSCell.

[0279] Optionally, sk_counter_delta represents a rule for increasing sk-counter when the terminal device switches from a conditional primary or secondary cell to the candidate cell, that is, sk_counter_new=sk_counter_current+sk_counter_delta.

[0280] Optionally, the sk_counter_delta allocation rule is as follows:

[0281] Candidate PSCells belonging to the same SN are configured with the same sk_counter_delta value.

[0282] Candidate PSCells belonging to different SNs are configured with different sk_counter_delta values.

[0283] Optionally, sk_counter_delta can introduce a new field or reuse the current sk-counter field. When the current sk-counter field is reused, that is, for R18 NR-DC with selective activation cell ofgroups, the current sk-counter field represents sk-counter-delta, that is, the original meaning has changed.

[0284] Optionally, the MN determines or generates first information based on the candidate cell configuration and / or sk_counter_delta information configured in each candidate cell, and sends the first information to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to start candidate cell condition evaluation.

[0285] Optionally, the terminal device evaluates that a candidate cell meets the execution condition and applies the first information of the corresponding candidate cell.

[0286] Optionally, if the current terminal device is not in the DC state, that is, the PSCell is not added, sk-counter=0 or sk-counter=sk_counter_delta.

[0287] Optionally, if the sk_counter_delta value of the candidate cell is different from that of the current serving PSCell, it is determined that the candidate cell and the current PSCell do not belong to the same SN, and sk-counter = sk_counter_current + sk_counter_delta, that is, the sk-counter value is increased by sk_counter_delta on the basis of the currently used value.

[0288] Optionally, if the sk_counter_delta value of the candidate cell is the same as that of the current serving PSCell, it is determined that the candidate cell and the current PSCell belong to the same SN, and sk-counter = sk_counter_current, that is, the sk-counter of the current serving PSCell is used.

[0289] Optionally, the terminal device sends the candidate cell information and / or sk-counter currently selected by the terminal device to the MN through RRCReconfigurationComplete.

[0290] Optionally, the MN updates the sk-counter and S-KgNB based on the same rule or the received sk-counter and sends it to the corresponding candidate cell.

[0291] Reference Figure 8 As shown, combined Figure 8 In the scenario shown, the process of the method for determining the secondary node counter in this embodiment is described as follows:

[0292] 1. The current UE is in DC state, and the serving cells are PCell and PSCell. The sk-counter currently used by PSCell is sk_counter_old.

[0293] 2. The network device decides to start the R18 selective activation cell group function. The candidate cells are PSCell (that is, the current serving cell is also a candidate cell), PSCell1, PSCell2, PSCell3, PSCell4, and PSCell5.

[0294] Among them, PSCell, PSCell1, and PSCell2 belong to SN1, PSCell3 and PSCell4 belong to SN2, and PSCell5 belongs to SN3.

[0295] 3. After receiving the candidate PSCells selected by each candidate SN, the MN configures sk-counter_delta for each candidate PSCell.

[0296] PSCell, PSCell1, and PSCell2 configure sk-counter_delta1.

[0297] PSCell3 and PSCell4 configure sk-counter_delta2.

[0298] PSCell5 configures sk-counter_delta3.

[0299] 4. The MN determines or generates first information based on the candidate cell configuration and the configured sk_counter_delta information, and sends the first information to the UE via RRCReconfiguration. After receiving the first information, the UE starts to start the candidate cell condition evaluation.

[0300] 5. The UE evaluates whether PSCell1 meets the execution condition and applies the first information of the corresponding candidate cell.

[0301] If the sk_counter_delta value of PSCell1 is the same as that of the current serving PSCell, it is determined that the candidate cell and the current PSCell belong to the same SN, and sk-counter = sk_counter_old, that is, the sk-counter of the current serving PSCell is used.

[0302] 6. The UE sends the candidate cell information (ie, PSCell1) currently selected by the UE and / or sk-counter to the MN through RRCReconfigurationComplete.

[0303] Based on the same rule or the received sk-counter, the MN updates the sk-counter and updates the S-KgNB and sends it to the corresponding candidate cell.

[0304] 7. The UE continues to perform candidate cell condition evaluation.

[0305] The UE evaluates that PSCell2 meets the execution condition and applies the first information of the corresponding candidate cell.

[0306] If the sk_counter_delta value of PSCell2 is the same as that of the current serving PSCell1, it is determined that the candidate cell and the current PSCell1 belong to the same SN, and sk-counter = sk_counter_current, that is, the sk-counter of the current serving PSCell1 is used.

[0307] 8. The UE sends the candidate cell information (i.e., PSCell2) and / or sk-counter currently selected by the UE to the MN through RRCReconfigurationComplete. The MN updates the sk-counter and S-KgNB based on the same rule or the received sk-counter and sends it to the corresponding candidate cell.

[0308] 9. The UE continues to perform candidate cell condition evaluation.

[0309] The UE evaluates that PSCell3 meets the execution condition and applies the first information of the corresponding candidate cell.

[0310] If the sk_counter_delta value of PSCell3 is different from that of the current serving PSCell2, it is determined that the candidate cell and the current PSCell2 do not belong to the same SN, and sk-counter = sk_counter_current + sk_counter_delta2.

[0311] 10. The UE sends the candidate cell information (i.e., PSCell3) currently selected by the UE and / or sk-counter to the MN through RRCReconfigurationComplete.

[0312] Based on the same rule or the received sk-counter, the MN updates the sk-counter and updates the S-KgNB and sends it to the corresponding candidate cell.

[0313] In the technical solution of this embodiment, the network device sends the first information, the terminal device determines the auxiliary node counter based on the first information, and each candidate cell is configured with an auxiliary node counter delta value. The candidate cells belonging to the same auxiliary node are configured with the same auxiliary node counter delta value; the candidate cells belonging to different auxiliary nodes are configured with different auxiliary node counter delta values. Through the technical solution of this embodiment, the terminal device does not need the network to reconfigure the sk-counter in supporting CPA / subsequent CPC, which can avoid unnecessary auxiliary node counter updates, and / or, when the auxiliary node counter needs to be updated, the auxiliary node counter is not reused and / or the auxiliary node counter is made monotonically increasing.

[0314] Fifth embodiment

[0315] Based on any of the above embodiments, the fifth embodiment of the present application proposes a method for determining a secondary node counter:

[0316] The network device sends first information, and the terminal device determines the auxiliary node counter based on the first information.

[0317] In this embodiment, the terminal device determines the secondary node counter based on the secondary node counter value list and / or the candidate cell grouping information.

[0318] Optionally, the first information may be at least one of the following: candidate cell grouping information, and a secondary node counter value list.

[0319] Optionally, the network device is a master node (MN).

[0320] Optionally, the network device sends the first information to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to initiate candidate cell condition evaluation.

[0321] Optionally, when the terminal device evaluates that a candidate cell meets the execution condition, the first information corresponding to the candidate cell is applied to calculate or update the auxiliary node counter.

[0322] Optionally, the first information further includes a reference configuration, and the auxiliary node counter value list is provided by the reference configuration.

[0323] Optionally, the candidate cells in the same secondary node are grouped together, and the candidate cells in different secondary nodes are grouped together.

[0324] Optionally, the secondary node counter values ​​in the secondary node counter value list are monotonically increasing.

[0325] Optionally, when the terminal device performs conditional addition of candidate cells as primary and secondary cells, the secondary node counter is determined based on the first rule.

[0326] Optionally, when the terminal device performs conditional primary and secondary cell switching of the candidate cell, the secondary node counter is determined based on the second rule.

[0327] Optionally, determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, and the secondary node counter is set to the first value in the secondary node counter value list.

[0328] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0329] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0330] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0331] Optionally, if the candidate cell is in the same group as the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover.

[0332] Optionally, if the candidate cell is not in the same group as the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes.

[0333] When the switching of the candidate cell condition primary and secondary cells is switching between secondary nodes, the secondary node counter is updated, including: updating the secondary node counter in sequence based on the secondary node counter value list.

[0334] Optionally, the network device is taken as MN (master node) for example:

[0335] When the MN generates or determines the candidate cell reference configuration, it provides a sk-counter list in the reference configuration, such as [sk-counter1, sk-counter2, sk-counter3, sk-counter4, ... sk-counterN]. The sk-counters in the sk-counterlist are monotonically increasing and are valid for all candidate cells.

[0336] Optionally, after receiving the candidate PSCells selected by each candidate SN, the MN groups the candidate PSCells, groups the candidate PSCells belonging to the same SN into one group, and allocates a group ID.

[0337] Optionally, the MN sends first information including reference configuration and grouping information of each candidate cell to the terminal device through RRCReconfiguration (RRC reconfiguration), and the terminal device starts to perform condition evaluation on the candidate cells after receiving the first information.

[0338] Optionally, the terminal device evaluates whether a candidate cell meets the execution condition, applies the first information of the corresponding candidate cell and determines the sk-counter.

[0339] Optionally, the sk-counter rule may be any of the following:

[0340] If the current terminal device is not in the DC (dual link) state, sk-counter=0 is directly set or the first value in the sk-counter list (ie, sk-counter1) is used.

[0341] If the current terminal device is in DC state, and the candidate cell belongs to the same group as the current serving cell, the previously used sk-counter is used.

[0342] If the current terminal device is in DC state, and the candidate cell and the current serving cell do not belong to the same group, the first unused value in the sk-counter list (such as sk-counter1) is used as the sk-counter generation key.

[0343] Optionally, the terminal device sends the candidate cell information and / or sk-counter currently selected by the terminal device to the MN through RRCReconfigurationComplete.

[0344] Optionally, the MN updates the S-KgNB according to the same rule or the received sk-counter value and sends it to the corresponding candidate cell.

[0345] Reference Fig. 9 As shown, combined Fig. 9 In the specific scenario shown, the process of the method for determining the secondary node counter in this embodiment is described as follows:

[0346] 1. The current UE is in DC state, and the serving cells are PCell and PSCell. The sk-counter currently used by PSCell is sk_counter_old.

[0347] The network equipment decides to start the R18 selective activation cell group function. The candidate cells are PSCell (that is, the current serving cell is also a candidate cell), PSCell1, PSCell2, PSCell3, PSCell4, and PSCell5.

[0348] PSCell, PSCell1, and PSCell2 belong to SN1, PSCell3 and PSCell4 belong to SN2, and PSCell5 belongs to SN3.

[0349] PSCell, PSCell1, and PSCell2 are a group, PSCell3 and PSCell4 are a group, and PSCell5 is another group.

[0350] 2. When the MN generates or determines the candidate cell reference configuration, it provides the sk-counter list in the reference configuration, such as [sk-counter1, sk-counter2, sk-counter3, sk-counter4, ... sk-counterN].

[0351] The sk-counter in the sk-counter list increases monotonically and is valid for all candidate cells.

[0352] The MN provides the first information including the reference configuration and grouping information of each candidate cell to the UE, and the UE starts to perform condition evaluation on the candidate cells.

[0353] 3. The UE evaluates that PSCell1 meets the execution condition, applies the first information of the corresponding candidate cell and updates sk-counter to the next unused value in the sk-counter list, such as sk-counter1.

[0354] Optionally, PSCell1 and PSCell belong to the same group, the first information of the corresponding candidate cell is applied, and sk-counter is not updated.

[0355] 4. The UE sends the candidate cell information and / or sk-counter currently selected by the UE to the MN through RRCReconfigurationComplete.

[0356] The MN updates the sk-counter value according to the same rule or the received sk-counter and updates the S-KgNB and sends it to the corresponding candidate cell.

[0357] 5. The UE continues to evaluate the candidate cells, evaluates that PSCell2 meets the execution conditions, applies the first information of the corresponding candidate cell and uses the next unused value in the sk-counter list, that is, the second value (ie, sk-counter2) as the sk-counter to generate the key.

[0358] Optionally, PSCell2 and PSCell1 belong to the same group, the first information of the corresponding candidate cell is applied, and the sk-counter is not updated.

[0359] 6. The UE sends the candidate cell information and / or sk-counter currently selected by the UE to the MN through RRCReconfigurationComplete.

[0360] Optionally, the MN updates the S-KgNB according to the same rule or the received sk-counter value and sends it to the corresponding candidate cell.

[0361] In the technical solution of this embodiment, the network device sends the first information, the terminal device determines the auxiliary node counter based on the first information, and the terminal device determines the auxiliary node counter based on the auxiliary node counter value list and / or the candidate cell grouping information. Through the technical solution of this embodiment, the terminal device does not need the network to reconfigure the sk-counter in supporting CPA / subsequent CPC, which can avoid unnecessary updates of the auxiliary node counter, and / or, when the auxiliary node counter needs to be updated, the auxiliary node counter is not reused and / or the auxiliary node counter is made monotonically increasing.

[0362] Sixth embodiment

[0363] Reference Fig.10 As shown, the sixth embodiment of the present application proposes a method for determining a secondary node counter, and the method for determining a secondary node counter comprises the steps of:

[0364] S100: The network device sends a conditional configuration so that the terminal device determines a secondary node counter based on the conditional configuration;

[0365] S200: Determine a secondary node counter based on conditional configuration.

[0366] Optionally, the condition configuration includes at least one of the following: a secondary node counter delta value, candidate cell grouping information, and a secondary node counter value list.

[0367] Optionally, the method further comprises at least one of the following:

[0368] The candidate cells share the delta value of the auxiliary node counter;

[0369] The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together;

[0370] Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value;

[0371] Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values;

[0372] The auxiliary node counter values ​​in the auxiliary node counter value list are monotonically increasing;

[0373] The secondary node counter delta value and / or the secondary node counter value list are provided via the reference configuration.

[0374] Optionally, the step S200 includes at least one of the following:

[0375] When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule;

[0376] When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

[0377] Optionally, determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, the secondary node counter is set to a secondary node counter delta value, and the secondary node counter is set to a first value in a secondary node counter value list.

[0378] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0379] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0380] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0381] Optionally, the method further comprises at least one of the following:

[0382] If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover;

[0383] If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes;

[0384] When the switching of the candidate cell condition primary and secondary cells is switching between secondary nodes, the secondary node counter is updated, including: updating the secondary node counter in sequence based on the secondary node counter delta value and / or the secondary node counter value list.

[0385] Optionally, the method further comprises at least one of the following:

[0386] The terminal device calculates or updates the secondary node key based on the secondary node counter; the terminal device sends the selected candidate cell information and / or the secondary node counter to the network device;

[0387] The network device receives the candidate cell information and / or the auxiliary node counter sent by the terminal device;

[0388] The network device updates the secondary node counter according to the same rule or the received secondary node counter, updates the secondary node key based on the updated secondary node counter, and sends the updated secondary node key to the corresponding candidate cell.

[0389] Optionally, before step S100, the method further includes the following steps:

[0390] The network device determines or generates the conditional configuration.

[0391] Optionally, the network device determines or generates a conditional configuration, including at least one of the following:

[0392] The network device groups the candidate primary and secondary cells selected by the secondary node received, and generates candidate cell grouping information according to the grouping result;

[0393] The network device configures a delta value of a secondary node counter for the candidate primary and secondary cells selected by the received secondary node;

[0394] The network device generates a reference configuration, wherein the reference configuration provides a secondary node counter delta value and / or a secondary node counter value list.

[0395] Optionally, as an implementation scenario, the condition configuration includes: a secondary node counter delta value, candidate cell grouping information, all candidate cells share the secondary node counter delta value, and the terminal device determines the secondary node counter based on the secondary node counter delta value and the candidate cell grouping information.

[0396] Optionally, the network device is taken as MN (master node) for example:

[0397] The MN provides sk_counter_delta (secondary node counter delta value) in the conditional configuration, that is, all candidate cells are configured to share the same sk_counter_delta.

[0398] Optionally, sk_counter_delta represents a rule for increasing the secondary node counter when a conditional primary or secondary cell is added or switched in the terminal device, that is, sk_counter_new=sk_counter_current+sk_counter_delta.

[0399] Optionally, after receiving the candidate PSCells (primary and secondary cells) selected by each candidate SN (secondary node), the MN groups the candidate PSCells, groups the candidate PSCells belonging to the same SN into one group, and allocates a group ID.

[0400] Optionally, the MN sends the condition configuration carrying the candidate cell grouping information to the terminal device via RRCReconfiguration. After receiving the condition configuration, the terminal device starts to start the candidate cell condition evaluation.

[0401] Optionally, the terminal device evaluates that a candidate cell meets the execution condition, applies the condition configuration of the corresponding candidate cell, and the sk-counter can be determined according to any of the following rules:

[0402] If the current terminal device is not in the DC state, that is, the PSCell is not added, sk-counter=0 or sk-counter=sk_counter_delta.

[0403] If the candidate cell and the current PSCell belong to the same SN, the sk-counter uses the previously applied sk-counter, that is, sk-counter = sk_counter_current;

[0404] If the candidate cell and the current PSCell do not belong to the same SN, the sk_counter is monotonically increased based on the previously applied sk_counter, that is, sk-counter = sk_counter_current + sk_counter_delta.

[0405] Optionally, the terminal device sends the candidate cell information currently selected by the terminal device and / or the applied sk-counter to the MN through RRCReconfigurationComplete.

[0406] Optionally, the MN updates the sk-counter according to the same rule or the received sk-counter, updates the S-KgNB based on the updated sk-counter and sends it to the corresponding candidate cell.

[0407] Optionally, as another implementation scenario, the condition configuration includes: a secondary node counter delta value. Each candidate cell is configured with a secondary node counter delta value, and candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value; candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values.

[0408] Optionally, the network device is taken as MN (master node) for example:

[0409] After receiving the candidate PSCells selected by each candidate SN, the MN configures sk_counter_delta for each candidate PSCell.

[0410] Optionally, sk_counter_delta represents a rule for increasing sk-counter when the terminal device switches from a conditional primary or secondary cell to the candidate cell, that is, sk_counter_new=sk_counter_current+sk_counter_delta.

[0411] Optionally, the sk_counter_delta allocation rule is as follows:

[0412] Candidate PSCells belonging to the same SN are configured with the same sk_counter_delta value.

[0413] Candidate PSCells belonging to different SNs are configured with different sk_counter_delta values.

[0414] Optionally, sk_counter_delta can introduce a new field or reuse the current sk-counter field. When the current sk-counter field is reused, that is, for R18 NR-DC with selective activation cell ofgroups, the current sk-counter field represents sk-counter-delta, that is, the original meaning has changed.

[0415] Optionally, the MN determines or generates a conditional configuration based on the candidate cell configuration and / or the sk_counter_delta information of each candidate cell configuration, and sends the conditional configuration to the terminal device via RRCReconfiguration. After receiving the conditional configuration, the terminal device starts to start candidate cell condition evaluation.

[0416] Optionally, the terminal device evaluates whether a candidate cell meets the execution condition and applies the condition configuration of the corresponding candidate cell.

[0417] Optionally, if the current terminal device is not in the DC state, that is, the PSCell is not added, sk-counter=0 or sk-counter=sk_counter_delta.

[0418] Optionally, if the sk_counter_delta value of the candidate cell is different from that of the current serving PSCell, it is determined that the candidate cell and the current PSCell do not belong to the same SN, and sk-counter = sk_counter_current + sk_counter_delta, that is, the sk-counter value is increased by sk_counter_delta on the basis of the currently used value.

[0419] Optionally, if the sk_counter_delta value of the candidate cell is the same as that of the current serving PSCell, it is determined that the candidate cell and the current PSCell belong to the same SN, and sk-counter = sk_counter_current, that is, the sk-counter of the current serving PSCell is used.

[0420] Optionally, the terminal device sends the candidate cell information and / or sk-counter currently selected by the terminal device to the MN through RRCReconfigurationComplete.

[0421] Optionally, the MN updates the sk-counter and S-KgNB based on the same rule or the received sk-counter and sends it to the corresponding candidate cell.

[0422] Optionally, as another implementation scenario, the condition configuration includes: candidate cell grouping information, a secondary node counter value list, and the terminal device determines the secondary node counter based on the secondary node counter value list and the candidate cell grouping information.

[0423] Optionally, the network device is taken as MN (master node) for example:

[0424] When the MN generates or determines the candidate cell reference configuration, it provides a sk-counter list in the reference configuration, such as [sk-counter1, sk-counter2, sk-counter3, sk-counter4, ... sk-counterN]. The sk-counters in the sk-counterlist are monotonically increasing and are valid for all candidate cells.

[0425] Optionally, after receiving the candidate PSCells selected by each candidate SN, the MN groups the candidate PSCells, groups the candidate PSCells belonging to the same SN into one group, and allocates a group ID.

[0426] Optionally, the MN sends the conditional configuration including the reference configuration and grouping information of each candidate cell to the terminal device through RRCReconfiguration (RRC reconfiguration), and the terminal device starts to perform conditional evaluation on the candidate cells after receiving the conditional configuration.

[0427] Optionally, the terminal device evaluates whether a candidate cell meets the execution condition, applies the condition configuration of the corresponding candidate cell and updates the sk-counter.

[0428] Optionally, the sk-counter update rule may be any of the following:

[0429] If the current terminal device is not in the DC (dual link) state, sk-counter=0 is directly set or the first value in the sk-counter list (ie, sk-counter1) is used.

[0430] If the current terminal device is in DC state, and the candidate cell belongs to the same group as the current serving cell, the previously used sk-counter is used.

[0431] If the current terminal device is in DC state, and the candidate cell and the current serving cell do not belong to the same group, the first unused value in the sk-counter list (such as sk-counter1) is used as the sk-counter generation key.

[0432] Optionally, the terminal device sends the candidate cell information and / or sk-counter currently selected by the terminal device to the MN through RRCReconfigurationComplete.

[0433] Optionally, the MN updates the S-KgNB according to the same rule or the received sk-counter value and sends it to the corresponding candidate cell.

[0434] In the technical solution of this embodiment, the network device sends a conditional configuration, and the terminal device determines the secondary node counter based on the conditional configuration. Through the technical solution of this embodiment, the terminal device can avoid unnecessary updates of the secondary node counter, and / or, when the secondary node counter needs to be updated, the secondary node counter is not reused and / or the secondary node counter is made monotonically increasing.

[0435] The embodiment of the present application further provides a device for determining a secondary node counter, which is applied to a terminal device or is the terminal device, and the device includes:

[0436] The determination module is used to determine the secondary node counter based on the first information.

[0437] Optionally, the first information may be at least one of the following: a secondary node counter delta value, candidate cell grouping information, and a secondary node counter value list.

[0438] Optionally, the network device is a master node (MN).

[0439] Optionally, the network device sends the first information to the terminal device via RRCReconfiguration. After receiving the first information, the terminal device starts to initiate candidate cell condition evaluation.

[0440] Optionally, when the terminal device evaluates that a candidate cell meets the execution condition, the first information corresponding to the candidate cell is applied to calculate or update the auxiliary node counter.

[0441] Optionally, the first information includes a reference configuration, and the secondary node counter delta value and / or the secondary node counter value list is provided by the reference configuration.

[0442] Optionally, the delta value of the secondary node counter represents a rule for increasing the secondary node counter when a conditional primary or secondary cell is added or switched in a terminal device.

[0443] Optionally, the first information further includes at least one of the following:

[0444] All candidate cells share the auxiliary node counter delta value;

[0445] The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together;

[0446] Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value;

[0447] Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values;

[0448] The secondary node counter values ​​in the secondary node counter value list are monotonically increasing.

[0449] Optionally, the device further comprises at least one of the following:

[0450] When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule;

[0451] When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

[0452] Optionally, determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, the secondary node counter is set to a secondary node counter delta value, and the secondary node counter is set to a first value in a secondary node counter value list.

[0453] Optionally, determining the secondary node counter based on the second rule includes at least one of the following:

[0454] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0455] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0456] Optionally, the device further comprises at least one of the following:

[0457] If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover;

[0458] If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes;

[0459] When the switching of the candidate cell condition primary and secondary cells is switching between secondary nodes, the secondary node counter is updated, including: updating the secondary node counter in sequence based on the secondary node counter delta value and / or the secondary node counter value list.

[0460] The embodiment of the present application further provides a device for determining a secondary node counter, which is applied to a network device or is a network device, and the device includes:

[0461] The sending module is used to send first information so that the terminal device determines the auxiliary node counter based on the first information.

[0462] Optionally, the first information includes at least one of the following: a secondary node counter delta value, candidate cell grouping information, and a secondary node counter value list.

[0463] Optionally, the device further comprises at least one of the following:

[0464] The candidate cells share the delta value of the auxiliary node counter;

[0465] The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together;

[0466] Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value;

[0467] Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values;

[0468] The auxiliary node counter values ​​in the auxiliary node counter value list are monotonically increasing;

[0469] The secondary node counter delta value and / or the secondary node counter value list are provided via the reference configuration.

[0470] Optionally, the device further comprises:

[0471] A generating module is used to determine or generate first information.

[0472] Optionally, the determining or generating the first information includes at least one of the following:

[0473] Grouping the candidate primary and secondary cells selected by the secondary node received, and generating candidate cell grouping information according to the grouping result;

[0474] Configure the secondary node counter delta value for the candidate primary and secondary cells selected by the received secondary node;

[0475] A reference configuration is generated, wherein the reference configuration provides a secondary node counter delta value and / or a secondary node counter value list.

[0476] Optionally, the device further comprises at least one of the following:

[0477] Receiving candidate cell information and / or secondary node counter sent by a terminal device;

[0478] The secondary node counter is updated according to the same rule or based on the received secondary node counter, and the secondary node key is updated based on the updated secondary node counter, and the updated secondary node key is sent to the corresponding candidate cell.

[0479] Optionally, the terminal device determines the secondary node counter based on the first information, including at least one of the following:

[0480] When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule;

[0481] When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

[0482] Optionally, determining the secondary node counter based on the first rule includes at least one of the following:

[0483] The slave node counter is set to 0,

[0484] The slave node counter is set to the slave node counter delta value,

[0485] The secondary node counter is set to the first value in the secondary node counter value list; and / or,

[0486] Determining the secondary node counter based on the second rule includes at least one of the following:

[0487] When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated;

[0488] When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

[0489] Optionally, the device further comprises at least one of the following:

[0490] If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover;

[0491] If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes;

[0492] The secondary node counters are updated in sequence based on the secondary node counter delta values ​​and / or the secondary node counter value list.

[0493] An embodiment of the present application also provides a communication system, comprising the terminal device described in any of the above embodiments, and the network device described in any of the above embodiments.

[0494] An embodiment of the present application also provides a communication device, including: a memory, a processor, and a secondary node counter determination program stored in the memory and executable on the processor, wherein the secondary node counter determination program, when executed by the processor, implements the secondary node counter determination method as described in any of the above embodiments.

[0495] The communication equipment mentioned in this application can be a terminal device (such as a smart terminal, specifically a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified in the context.

[0496] An embodiment of the present application further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method for determining a secondary node counter as described in any of the above embodiments is implemented.

[0497] In the embodiments of the communication device and the storage medium provided in the embodiments of the present application, all the technical features of any of the above-mentioned auxiliary node counter determination method embodiments may be included, and the expansion and explanation content of the specification are basically the same as those of the embodiments of the above-mentioned method, and will not be repeated here.

[0498] The embodiment of the present application further provides a computer program product, which includes a computer program code. When the computer program code runs on a computer, the computer executes the methods in the above various possible implementation modes.

[0499] An embodiment of the present application also provides a chip, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device equipped with the chip executes the methods in various possible implementation modes as described above.

[0500] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0501] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0502] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0503] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0504] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only 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 the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0505] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0506] The various technical features of the technical solution of the present application can be arbitrarily combined. 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 the present application.

[0507] 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 a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, 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 a terminal device (which can be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to execute the method of each embodiment of the present application.

[0508] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, 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 loading and executing computer program instructions 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 devices. Computer instructions can be stored in a storage medium, or transmitted from one storage medium to another storage medium. For example, computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode. 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 integration. Available media can be magnetic media, (e.g., floppy disk, storage disk, tape), optical media (e.g., DVD), or semiconductor media (e.g., solid-state storage disk Solid State Disk (SSD)), etc.

[0509] The above are only preferred embodiments of the present application, and are not intended to 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 method for determining a secondary node counter, It is characterized in that Includes steps: S20: Determine a secondary node counter based on the first information.

2. The method according to claim 1, It is characterized in that The first information includes at least one of the following: The delta value of the slave node counter; Candidate cell grouping information; List of secondary node counter values.

3. The method according to claim 2, It is characterized in that Also includes at least one of the following: The candidate cells share the delta value of the auxiliary node counter; The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together; Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value; Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values; The auxiliary node counter values ​​in the auxiliary node counter value list are monotonically increasing; The secondary node counter delta value and / or the secondary node counter value list are provided via the reference configuration.

4. The method according to claim 1, It is characterized in that Step S20 includes at least one of the following: When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule; When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

5. The method according to claim 4, in, Determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, the secondary node counter is set to the secondary node counter delta value, the secondary node counter is set to the first value of the secondary node counter value list; and / or, Determining the secondary node counter based on the second rule includes at least one of the following: When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated; When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

6. The method according to claim 5, It is characterized in that Also includes at least one of the following: If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover; If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes; When the switching of the candidate cell condition primary and secondary cells is switching between secondary nodes, the secondary node counter is updated, including: updating the secondary node counter in sequence based on the secondary node counter delta value and / or the secondary node counter value list.

7. The method according to claim 1, It is characterized in that Also includes at least one of the following: Calculate or update the secondary node key based on the secondary node counter; The selected candidate cell information and / or the secondary node counter are sent to the primary node.

8. A method for determining a secondary node counter, It is characterized in that Includes steps: S10: Send first information so that the terminal device determines the secondary node counter based on the first information.

9. The method according to claim 8, It is characterized in that The first information includes at least one of the following: The delta value of the slave node counter; Candidate cell grouping information; List of secondary node counter values.

10. The method according to claim 9, It is characterized in that Also includes at least one of the following: The candidate cells share the delta value of the auxiliary node counter; The candidate cells in the same auxiliary node are grouped together, and the candidate cells in different auxiliary nodes are grouped together; Candidate cells belonging to the same secondary node are configured with the same secondary node counter delta value; Candidate cells belonging to different secondary nodes are configured with different secondary node counter delta values; The auxiliary node counter values ​​in the auxiliary node counter value list are monotonically increasing; The secondary node counter delta value and / or the secondary node counter value list are provided via the reference configuration.

11. The method according to claim 10, It is characterized in that Before step S10, the method further includes the following steps: First information is determined or generated.

12. The method according to claim 11, It is characterized in that The determining or generating the first information includes at least one of the following: Grouping the candidate primary and secondary cells selected by the secondary node received, and generating candidate cell grouping information according to the grouping result; Configure the secondary node counter delta value for the candidate primary and secondary cells selected by the received secondary node; A reference configuration is generated, wherein the reference configuration provides a secondary node counter delta value and / or a secondary node counter value list.

13. The method according to claim 8, It is characterized in that Also includes at least one of the following: Receiving candidate cell information and / or secondary node counter sent by a terminal device; The secondary node counter is updated according to the same rule or based on the received secondary node counter, and the secondary node key is updated based on the updated secondary node counter, and the updated secondary node key is sent to the corresponding candidate cell.

14. The method according to claim 8, It is characterized in that The terminal device determines the secondary node counter based on the first information, including at least one of the following: When the terminal device performs conditional addition of a candidate cell primary and secondary cell, determining a secondary node counter based on the first rule; When the terminal device performs candidate cell conditional primary and secondary cell switching, the secondary node counter is determined based on the second rule.

15. The method according to claim 14, It is characterized in that Determining the secondary node counter based on the first rule includes at least one of the following: the secondary node counter is set to 0, the secondary node counter is set to the secondary node counter delta value, the secondary node counter is set to the first value of the secondary node counter value list; and / or, Determining the secondary node counter based on the second rule includes at least one of the following: When the candidate cell condition master-slave cell switching is a secondary node intra-slave node switching, the secondary node counter is not updated; When the primary and secondary cell switching of the candidate cell condition is switched between secondary nodes, the secondary node counter is updated.

16. The method according to claim 15, It is characterized in that Also includes at least one of the following: If the delta value of the secondary node counter of the candidate cell is the same as that of the currently serving primary and secondary cell or the candidate cell is in the same group as that of the currently serving primary and secondary cell, it is determined to be an intra-secondary node handover; If the delta value of the secondary node counter of the candidate cell is different from that of the currently serving primary and secondary cell or the candidate cell is in a different group from that of the currently serving primary and secondary cell, it is determined to be a handover between secondary nodes; The secondary node counters are updated in sequence based on the secondary node counter delta values ​​and / or the secondary node counter value list.

17. A communication device, It is characterized in that include: A memory and a processor, wherein a secondary node counter determination program is stored in the memory, and when the secondary node counter determination program is executed by the processor, the secondary node counter determination method according to claim 1 or 8 is implemented.

18. A storage medium, It is characterized in that The storage medium stores a computer program, and when the computer program is executed by the processor, the secondary node counter determination method according to claim 1 or 8 is implemented.

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