Communication methods, terminals, network devices, communication system and storage media

Abstract

The present disclosure relates to communication methods, terminals, network devices, a communication system and storage media. A communication method comprises: in response to a terminal having executed a primary-secondary-cell change, executing an operation on first information, wherein the first information is information that is associated with a secondary node (SN) and is used for a first mobility operation. By means of the solution provided in the embodiments of the present disclosure, uncontrollable behaviors of a terminal can be avoided.

Description

Communication method, terminal, network device, communication system and storage medium Technical Field The present disclosure relates to the field of communication technology, and in particular to a communication method, a terminal, a network device, a communication system and a storage medium. Background Art At present, Multi-Radio Dual Connectivity (MR-DC) is a generalized Intra Evolved-Universal Terrestrial Radio Access (Intra-E-UTRA) dual connectivity. MR-DC dual connectivity involves subsequent Conditional PSCell Addition / Change (CPAC). Summary of the invention The inconsistency between the terminal and the network device storing subsequent CPAC causes uncontrollable behavior of the terminal. The embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium. According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, comprising: in response to a terminal executing a primary-secondary cell change, performing an operation on first information, where the first information is information associated with a secondary node SN and used for a first mobility operation. According to the second aspect of an embodiment of the present disclosure, a communication method is provided, comprising: sending second information to a terminal so that the terminal performs an operation on the first information in response to a change in a first primary and secondary cell and receiving the second information, wherein the first information is used for a first mobility operation; the second information includes a display instruction to perform the operation on the first information, or the second information includes an implicit instruction to perform the operation on the first information. According to a third aspect of an embodiment of the present disclosure, a communication method is provided, the method comprising: a network device sends second information to a terminal, the second information comprising an instruction that displays an instruction to perform an operation on the first information, or the second information comprises an instruction that implicitly indicates the execution of an operation on the first information; the terminal performs an operation on the first information in response to a change in the first primary and secondary cells and receiving the second information, the first information being used for a first mobility operation. According to a fourth aspect of an embodiment of the present disclosure, a terminal is provided, comprising: a processing module, configured to perform an operation on first information in response to the terminal performing a primary and secondary cell change, wherein the first information is used for a first mobility operation. According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, comprising: a transceiver module, configured to send second information to a terminal, so that the terminal performs an operation on the first information in response to a change in a first primary or secondary cell and receiving the second information, wherein the first information is for a first mobility operation; the second information includes an instruction that displays an instruction to perform the operation on the first information, or the second information includes an instruction that implicitly indicates the execution of the operation on the first information. According to a sixth aspect of an embodiment of the present disclosure, a terminal is provided, comprising: one or more processors; the processor is used to call instructions so that the terminal executes the communication method described in the first aspect. According to a seventh aspect of an embodiment of the present disclosure, a network device is provided, comprising: one or more processors; the processor is used to call instructions so that the network device executes the communication method described in the second aspect. According to an eighth aspect of an embodiment of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of the first aspects, and the network device is configured to implement the communication method described in the second aspect. According to a ninth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and wherein when the instructions are executed on a communication device, the communication device executes the communication method described in any one of the first aspects. According to a tenth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and wherein when the instructions are executed on a communication device, the communication device executes the communication method described in any one of the second aspects. The solution provided by the embodiments of the present disclosure can avoid uncontrollable behavior of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for describing the embodiments are introduced below. The following drawings are only some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure. FIG. 1 a is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure. FIG. 1 b is a schematic diagram of a system architecture of an EPC-based MR-DC according to an exemplary embodiment. FIG. 1c is a schematic diagram of a system architecture of MR-DC based on 5GC according to an exemplary embodiment. Fig. 1d is a schematic diagram of a cell in dual connectivity according to an exemplary embodiment. FIG. 2a is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 2b is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 2c is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 3a is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG3 b is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 3c is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 3d is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 3e is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG4a is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG4b is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 4c is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG4d is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. FIG. 5 a is a flow chart of a communication method according to an embodiment of the present disclosure. FIG5 b is a flow chart of a communication method according to an embodiment of the present disclosure. FIG. 5c is a flow chart of a communication method according to an embodiment of the present disclosure. FIG6 a is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure. FIG6b is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure. Fig. 7a is a schematic structural diagram of a communication device according to an exemplary embodiment. Fig. 7b is a schematic diagram showing a chip structure according to an exemplary embodiment. DETAILED DESCRIPTION The embodiments of the present disclosure provide a communication method, a terminal, a network device, a communication system, and a storage medium. In a first aspect, an embodiment of the present disclosure proposes a communication method, comprising: in response to a terminal executing a primary-secondary cell change, performing an operation on first information, where the first information is information associated with an SN secondary node and used for a first mobility operation. In the above embodiment, by performing operations on the first information, in some cases it can be deleted or suspended to avoid the terminal retaining redundant information and causing uncontrollable behavior of the terminal. In other cases, the first information can be retained for continued use to avoid reconfiguration of the first information and the consumption of signaling. In combination with some embodiments of the first aspect, in some embodiments, the first information is information represented or transmitted in SN format. In the above embodiment, the first information is information in SN format. By performing operations on the first information, it can be deleted or suspended in some cases to avoid the terminal retaining redundant information and causing uncontrollable behavior of the terminal. In other cases, the first information can be retained for continued use to avoid reconfiguration of the first information and the consumption of signaling. In combination with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following: information based on the SN and sent to the terminal through the wireless signaling bearer SRB3, and used for the first mobility operation; information based on the SN and sent to the terminal through the master node transparent transmission, and used for the first mobility operation. In the above embodiment, an operation can be performed on at least one type of first information, so as to flexibly avoid uncontrollable behavior of the terminal and improve communication efficiency. In combination with some embodiments of the first aspect, in some embodiments, the first mobility operation includes at least one of the following: subsequent conditional primary and secondary cells adding or changing subsequent CPAC; mobility LTM triggered by layer 1 and layer 2. In the above embodiment, operations may be performed on the first information corresponding to at least one different mobility operation, thereby flexibly avoiding uncontrollable behavior of the terminal and improving communication efficiency. In combination with some embodiments of the first aspect, in some embodiments, the operation includes at least one of the following: deleting the first information; retaining the first information; suspending the first information; not suspending the first information; and restoring the first information. In the above embodiments, corresponding operations may be performed on the first information according to different situations, so as to avoid the terminal from retaining redundant information, avoid causing uncontrollable behavior of the terminal, or reduce signaling consumption. In combination with some embodiments of the first aspect, in some embodiments, the primary and secondary cell change includes a first primary and secondary cell change, the operation includes deleting the first information, or the operation includes suspending the first information; the first primary and secondary cell change is a primary and secondary cell change between SNs. In the above embodiment, when the first primary and secondary cells are changed, the first information may be deleted or suspended, so as to avoid the terminal from retaining redundant information and causing uncontrollable behavior of the terminal. In combination with some embodiments of the first aspect, in some embodiments, at least one of the following methods is used to determine whether to perform an operation on the first information: in response to a change in the first primary and secondary cells, the operation on the first information is performed by default; in response to a change in the first primary and secondary cells and receipt of second information sent by a network device, the operation on the first information is performed; the second information includes a display instruction to perform the operation on the first information, or the second information includes an implicit instruction to perform the operation on the first information. In the above embodiments, different methods can be used to determine the operation to be performed on the first information. In some cases, the efficiency of the operation on the first information can be improved, thereby improving communication efficiency. In other cases, appropriate operations can be performed on the first information more accurately to avoid operational errors. In combination with some embodiments of the first aspect, in some embodiments, performing an operation on the first information includes: deleting or suspending a first variable stored by the terminal, where the first variable is a variable of the secondary cell group and is used to store the first information. In the above embodiment, deleting the first information may directly delete the first variable storing the first information, thereby improving the efficiency of operating the first information. In combination with some embodiments of the first aspect, in some embodiments, the method further includes: deleting other information different from the first information in a first variable stored by the terminal, where the first variable is a variable of a secondary cell group and is used to store the first information. In the above embodiment, other information in the first variable may be deleted after deleting the first information, that is, the first variable may be cleared, so that the first variable does not need to be configured multiple times. In combination with some embodiments of the first aspect, in some embodiments, the method further includes: deleting a measurement configuration, where the measurement configuration corresponds to a measurement identifier, and the measurement identifier is a measurement identifier of an execution condition corresponding to the first variable. In the above embodiment, the measurement configuration is deleted while deleting the first information, so as to improve communication efficiency and save power consumption of the terminal. In combination with some embodiments of the first aspect, in some embodiments, the operation includes suspending the first information, and the method also includes stopping executing at least one of the following: measuring a measurement identifier corresponding to a measurement execution condition, wherein the execution condition is an execution condition of the suspended first information; evaluating the execution condition of the suspended mobility configuration information; and executing a first mobility operation, wherein the first mobility operation is a first mobility operation corresponding to the suspended first information. In the above embodiment, at least one of the above operations may be performed while suspending, so as to improve communication efficiency and save power consumption of the terminal. In combination with some embodiments of the first aspect, in some embodiments, the method further includes: in response to receiving third information sent by a network device, enabling the suspended first information; the third information is used to indicate enabling the first information. In the above embodiment, the suspended first information may be reactivated to save repeated configuration of the first information. In combination with some embodiments of the first aspect, in some embodiments, the terminal corresponds to one or more first information groups, the first information groups correspond to indexes, and the third information is used to indicate the index corresponding to the enabled first information. In the above embodiment, the third information may also indicate the index of the first information, so that when there are many first information hung up by the terminal, the first information can be found quickly and corresponding operations can be performed on the first information, thereby improving efficiency. In combination with some embodiments of the first aspect, in some embodiments, the primary and secondary cell change includes a second primary and secondary cell change, the operation includes retaining the first information, or the operation includes not suspending the first information; the second primary and secondary cell change is a primary and secondary cell change within the SN. In the above embodiment, if the second primary and secondary cells are changed, the first information may be retained or not suspended, so as to save repeated configuration of the first information and be more efficient. In combination with some embodiments of the first aspect, in some embodiments, before performing an operation on the first information, the method also includes: determining that the terminal successfully accesses the target primary and secondary cell, and the target primary and secondary cell is the newly accessed primary and secondary cell after the primary and secondary cell is changed, or a candidate cell. In the above embodiment, it is determined that the target primary and secondary cells are successfully accessed to determine that the primary and secondary cells are changed successfully, and the first information is operated to avoid the situation where the primary and secondary cells are changed but not successfully, that is, to avoid the situation where the first information is operated incorrectly. In combination with some embodiments of the first aspect, in some embodiments, at least one of the following methods is used to determine whether to execute the change of primary and secondary cells: fourth information sent by the master node or SN is received, and the fourth information is used to configure the change of primary and secondary cells; based on fifth information pre-configured by the master node, a second mobility operation is performed, and the fifth information is used for mobility configuration. In the above embodiment, the terminal may determine to perform the primary and secondary cell change in at least one manner, so that the terminal operates on the first information after performing the primary and secondary cell change. In the second aspect, an embodiment of the present disclosure proposes a communication method, including: sending second information to a terminal so that the terminal responds to a change in a first primary and secondary cell and receives the second information, and performs an operation on the first information, wherein the first information is associated with the secondary node SN and is used for a first mobility operation; the second information includes an instruction that displays an instruction to perform an operation on the first information, or the second information includes an instruction that implicitly indicates an instruction to perform an operation on the first information. In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending third information to the terminal, where the third information is used to instruct the terminal to enable the first information. In combination with some embodiments of the second aspect, in some embodiments, the terminal corresponds to one or more first information groups, the first information groups correspond to indexes, and the third information is used to indicate the index corresponding to the enabled first information. In combination with some embodiments of the second aspect, in some embodiments, the method also includes at least one of the following: sending fourth information to the terminal, the fourth information is used to configure the change of primary and secondary cells; pre-configuring fifth information to the terminal, the fifth information is used for mobility configuration. In a third aspect, an embodiment of the present disclosure provides a communication method, comprising: a network device sends a second message to a terminal, wherein the second message includes an instruction to explicitly indicate the execution of an operation on the first message, or the second message includes an instruction to implicitly indicate the execution of an operation on the first message. the terminal responds to the occurrence of the first primary and secondary cell change and receives the second information, performs an operation on the first information, where the first information is associated with the secondary node SN and is used for the first mobility operation. In a fourth aspect, an embodiment of the present disclosure proposes a terminal, which includes at least one of a transceiver module and a processing module; wherein the terminal is used to execute the first aspect and the optional implementation method of the first aspect. In a fifth aspect, an embodiment of the present disclosure proposes a network device, including a transceiver module; wherein the above-mentioned network device is used to execute the second aspect and the optional implementation method of the second aspect. In a sixth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the above-mentioned terminal is used to execute the first aspect and the optional implementation method of the first aspect. In a seventh aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the above-mentioned network device is used to execute the second aspect and the optional implementation method of the second aspect. In an eighth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the first and third aspects, and the optional implementation methods of the first and third aspects, and the network device is configured to execute the method described in the second and third aspects, and the optional implementation methods of the second and third aspects. In the ninth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation methods of the first and third aspects, and the second and third aspects. In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first and third aspects, and the optional implementation methods of the second and third aspects. In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the first and third aspects, and the optional implementation of the second and third aspects. It is understandable that the above-mentioned terminals, network devices, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, which will not be repeated here. In some embodiments, the communication method and information processing method are interchangeable, the communication device and information processing device are interchangeable, and the information processing system and communication system are interchangeable. The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships. The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun after the article may be understood as a singular expression or a plural expression. In the embodiments of the present disclosure, “plurality” refers to two or more. In some embodiments, the terms “at least one,” “one or more,” “a plurality of,” “multiple,” etc. may be used interchangeably. In some embodiments, "at least one of A and B", "A and / or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar. In some embodiments, the recording method of "A or B" may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, etc., the above is also similar. The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be imposed due to the use of prefixes. For example, if the description object is a "field", then the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", then the ordinal number before the "field" in the "first level" and the "second level" The ordinal number before "level" does not limit the priority between "levels". For another example, the number of description objects is not limited by ordinal numbers and can be one or more. Take "first device" as an example, where the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different. In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A. In some embodiments, terms such as "in response to ...", "in response to determining ...", "in the case of ...", "at the time of ...", "when ...", "if ...", "if ...", etc. can be used interchangeably. In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other. In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably. In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.). In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node (node)", "access point (access point)", "transmission point (TP)", "reception point (reception point, RP)", "transmission / reception point (transmission / reception point, TRP)", "panel (panel)", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell (cell)", "macro cell (macro cell)", "small cell (small cell)", "femto cell (femto cell)", "pico cell (pico cell)", "sector (sector)", "cell group (cell)", "serving cell (serving cell)", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part, BWP)" and the like can be used interchangeably. In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like may be used interchangeably. In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the access network device, the core network device, or the network device and the communication between the terminals is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links. In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the terminal. In some embodiments, the acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained. In some embodiments, data, information, etc. may be obtained with the user's consent. In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, or any columns may also be implemented as an independent embodiment. FIG. 1 a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1 a , a communication system 100 includes a terminal 101 and a network device 102 . In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart city. At least one of a wireless terminal device in a smart home, but not limited to this. In some embodiments, the network device 102 may include at least one of an access network device and a core network device. In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal 101 device, an augmented reality (AR) terminal 101 device, a wireless terminal 101 device in industrial control, a wireless terminal 101 device in self-driving, a wireless terminal 101 device in remote medical surgery, a wireless terminal 101 device in a smart grid, a wireless terminal 101 device in transportation safety, a wireless terminal 101 device in a smart city, and at least one of a wireless terminal 101 device in a smart home, but is not limited to these. In some embodiments, the access network device is, for example, a node or device that accesses the terminal 101 to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto. In some embodiments, the technical solution of the present disclosure may be applicable to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure may become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs. In some embodiments, the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be referred to as a control unit (control unit). The CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this. In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or a group of devices including one or more network elements, or may be physical. The core network may include, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC). It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. A person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems. The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG. 1a, or part of the subject, but are not limited thereto. The subjects shown in FIG. 1a are examples, and the communication system may include all or part of the subjects in FIG. 1a, or may include other subjects other than FIG. 1a, and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection. The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine-to-Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), systems using other communication methods, next-generation systems based on them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) for application. Currently, Multi-Radio Dual Connectivity (MR-DC) is a generalized Intra Evolved-Universal Terrestrial Radio Access (Intra-E-UTRA) dual connectivity. Based on MR-DC, the terminal can use the radio resources provided by two different schedulers, which are located on two different Next Generation Radio Access Network (NG-RAN) nodes and connected through non-ideal backhaul. One is used to provide NR access and the other is used to provide NR access. Provides Evolved-Universal Terrestrial Radio Access (E-UTRA) or NR access. One is a Master Node (MN) and the other is a Secondary Node (SN). The MN and SN are connected via a network interface. At least the MN is connected to the core network. In some embodiments, MR-DC may include MR-DC based on Evolved Packet Core (EPC) (MR-DC with EPC) and MR-DC based on 5G Core (5G Core, 5GC) (MR-DC with 5GC). In some embodiments, as shown in FIG1b , a schematic diagram of a system architecture of MR-DC based on EPC is shown according to an exemplary embodiment. EPC supports MR-DC through E-UTRA and NR dual connectivity (E-UTRA-NR Dual Connectivity, EN-DC). Among them, the terminal is connected to an eNB acting as an MN and an en-gNB acting as an SN. The eNB is connected to the EPC through the S1 interface and to the en-gNB through the X2 interface. The en-gNB can also be connected to the EPC through the S1-U interface and to other en-gNBs through the X2-U interface. In some embodiments, a schematic diagram of a system architecture of MR-DC based on 5GC is shown according to an exemplary embodiment. MR-DC based on 5GC can be divided into the following three cases. (A) E-UTRA and NR Dual Connectivity (EN-DC): NG-RAN supports NG-RAN E-UTRA-NR dual connectivity, also known as NGEN-DC, where the terminal is connected to an ng-eNB as the MN and a gNB as the SN. The ng-eNB is connected to the 5GC, and the gNB is connected to the ng-eNB through the Xn interface. (B) NR and E-UTRA Dual Connectivity (NE-DC): NG-RAN supports NR-E-UTRA dual connectivity. The terminal is connected to a gNB acting as an MN and an ng-eNB acting as a SN. The gNB is connected to the 5GC, and the ng-eNB is connected to the gNB through the Xn interface. (C), NR and NR Dual Connectivity (NR-NR Dual Connectivity, NR-DC): NG-RAN supports NR-NR dual connectivity. In it, the terminal is connected to a gNB acting as an MN and another gNB acting as an SN. The primary gNB is connected to the 5GC through the NG interface, the two gNBs are connected through the Xn interface, and the secondary gNB can also be connected to the 5GC through the NG-U interface. In addition, NR-DC can also be used for UE to access a single gNB, acting as both an MN and an SN, and configuring the Master Cell group (MCG) and the Secondary Cell group (SCG), as shown in Figure 1c. In some embodiments, FIG1d is a schematic diagram of a cell in a dual connection according to an exemplary embodiment. As shown in FIG1d , the cell groups in the dual connection are divided into MCG and SCG. Under the MCG, there may be many cells, among which there is a cell for initiating initial access, for example, this cell is called the primary cell (PCell). PCell is the most "main" cell in the MCG. The PCell under the MCG and the secondary cell (SCell) under the MCG are combined through carrier aggregation (CA). The MCG includes the primary cell, namely the PCell, and the secondary cell, namely the SCell. The SCG includes the primary secondary cell (PSCell), and the secondary cell, namely the SCell. Because many signalings are only sent on the PCell and the PSCell, for the convenience of description, a concept of a special cell (sPCell) is also defined in the relevant communication protocol. The PCell and the PSCell are collectively referred to as sPCell. It can be understood that the number of cells in the dual connection shown in Figure 1d is only used as an example. The number of cells under the main cell group and the secondary cell group can also be more, and the connection relationship can also be changed according to actual conditions. The example of Figure 1d is not intended to limit the cells in the dual connection provided in the embodiment of the present application. In some embodiments, the subsequent conditional PSCell Addition / Change (CPAC) may be referred to as cell group selective activation, wherein the subsequent CPAC includes at least one of a subsequent conditional PSCell Addition (CPC) and a subsequent conditional PSCell Change (CPA). In some embodiments, in CPC or CPA, the terminal configured with CPC or CPA must release the CPC / CPA configuration when completing random access to the target primary and secondary cells. Therefore, if the network does not reconfigure and reinitialize CPC / CPA, the terminal will not have the opportunity to continue to execute CPC / CPA subsequently. This will increase the delay of switching or SCG change and increase signal overhead, especially in the frequency range (FR) 2 scenario, when the cell group (CG) is frequently changed. Therefore, through subsequent CPAC, after the cell group or primary and secondary cells are changed or added, the terminal does not delete the conditional reconfiguration configuration, that is, the CPAC configuration. In the absence of RRC reconfiguration or reinitialization of the conditional reconfiguration configuration, the original CPAC configuration can also continue to be used for subsequent CPAC, that is, subsequent CPAC. Supporting subsequent CPAC can effectively reduce signaling overhead and reduce interruption time. In some embodiments, the configuration of a subsequent CPAC includes but is not limited to at least one of the following: a configuration identifier, an execution condition, and a configuration of a corresponding candidate target cell or cell group. The network device can configure multiple subsequent CPAC configurations and a reference configuration for the terminal at the same time. The configuration identifier is an identity document (ID) indicating the relevant configuration. The execution condition is a condition that the terminal needs to meet to trigger a mobility operation, that is, to trigger CPAC. The configuration of the corresponding candidate target cell or cell group is the candidate configuration corresponding to the target cell accessed when the terminal triggers the mobility operation. This configuration can be represented by radio resource control inactive reconfiguration (RRC reconfiguration). The reference configuration is: the reference configuration corresponding to the candidate target configuration. The candidate target configuration is an incremental configuration of the reference configuration. A complete configuration can be generated based on the candidate target configuration and the reference configuration. This configuration can be represented by RRC reconfiguration. The terminal will apply the complete configuration when executing CPAC. The reference configuration can be a specific configuration generated by the network, or This is the current configuration of the terminal. Only the configuration for subsequent CPAC requires the configuration of the reference configuration. In some embodiments, for some CPACs, the configuration does not include a reference configuration, but only includes a configuration identifier, execution conditions, and the configuration of the corresponding candidate target cell or cell group. When the UE triggers a mobility operation, the target cell accessed directly applies the configuration of the candidate target cell (or cell group). In subsequent CPACs, the network device can provide the terminal with "candidate cell or cell group configuration". These candidate cell or cell group configurations can be applied multiple times in the future without re-providing the cell or cell group configuration. That is, in subsequent CPACs, after applying the new cell group configuration to access the new cell, the terminal will not delete the original subsequent CPAC configuration. For some CPACs, the terminal can support CPC initiated by the master node and CPC initiated by the SN. The CPC initiated by the MN can be configured with A4, and the CPC initiated by the SN can be configured with A3 and A5. Among them, A3: Conditional reconfiguration candidate value is better than PCell / PSCell (CondEvent A3: Conditional reconfiguration candidate becomes amount of offset better than PCell / PSCell); A4: Conditional reconfiguration candidate becomes better than absolute threshold (CondEvent A4: Conditional reconfiguration candidate becomes better than absolute threshold); A5: PCell / PSCell is worse than absolute threshold 1, and conditional reconfiguration candidate is better than another absolute threshold 2 (CondEvent A5: PCell / PSCell becomes worse than absolute threshold 1 AND Conditional reconfiguration candidate becomes better than another absolute threshold 2). In some embodiments, for subsequent CPAC, both MN-initiated and SN-initiated subsequent CPAC are supported. In some embodiments, for subsequent CPAC initiated by the MN, the radio access network device (RAN) 2 agrees that: For subsequent CPAC between SNs initiated by MN, the source MN generates the execution conditions of the initial CPAC. The candidate SN can generate execution conditions for subsequent CPCs. The source MN may generate execution conditions for subsequent CPA. In some embodiments, for SN-initiated CPC, there are the following examples: For subsequent CPAC between SNs initiated by an SN, the execution conditions for the source SN to generate the initial CPC; For subsequent CPAC initiated by the SN, the candidate SN generates execution conditions for the subsequent CPC. In some embodiments, the subsequent CPAC initiated by the MN and the subsequent CPAC initiated by the SN may be represented or transmitted in the MN format. Exemplarily, the subsequent CPAC may be a subsequent CPAC between SNs or a subsequent CPAC within an SN. In some embodiments, the SN initiated intra-SN subsequent CPAC may be represented or transmitted in SN format. In some embodiments, subsequent CPAC may be one or more of subsequent CPA and subsequent CPC. Among them, the initial CPC means that the terminal triggers CPAC from the initial source primary and secondary cells to access a candidate cell that supports subsequent CPAC; subsequent CPC means: the current service cell is a candidate target cell that supports subsequent CPAC. When this cell becomes the service cell, the terminal will continue to evaluate the execution conditions corresponding to other candidate cells, thereby triggering subsequent CPC. From the time the subsequent CPC configuration is received, the terminal first evaluates the initial execution conditions, triggers the initial CPC, and then can execute subsequent CPC multiple times without receiving the RRC reconfiguration message from the network side. The execution conditions of subsequent CPC are generated by the candidate SN. In some embodiments, for subsequent CPAC, the following three scenarios are supported: Assume to support the following scenarios of SCG selective activation: SN initiated intra-SN subsequent CPAC (SN initiated intra-SN SCG selective activation); MN initiated subsequent CPAC between SNs (MN initiated inter-SN SCG selective activation); SN initiated inter-SN subsequent CPAC (SN initiated inter-SN SCG selective activation). In some embodiments, SN initiated intra-SN subsequent CPAC, i.e., SN initiated intra-SN SCG selective activation, and MN / SN initiated inter-SN subsequent CPAC, i.e., MN initiated inter-SN SCG selective activation and SN initiated inter-SN SCG selective activation are configured independently and can be sent to the terminal through SCG conditional reconfiguration. In some embodiments, the configuration and execution of SN initiated intra-SN subsequent CPAC do not involve the participation of MN, i.e., through: a conditional Reconfiguration associated with SCG, that is included in the RRC Reconfiguration message received via signaling radio bearer (SRB) 3, or, alternatively, included within a RRCReconfiguration message embedded in a RRCReconfiguration message received via SRB1 (a conditionalReconfiguration, associated with SCG, that is included in the RRCReconfiguration message received via SRB3, or, alternatively, included within a RRCReconfiguration message embedded in a RRCReconfiguration message received via SRB1). In some embodiments, MN / SN initiated inter-SN subsequent CPAC is initiated by MCG conditional Reconfiguration. Sent to the terminal, i.e. through: a conditional reconfiguration associated with MCG, that is included in the RRCReconfiguration message received via SRB1 (a conditionalReconfiguration associated with MCG, that is included in the RRCReconfiguration message received via SRB1), and, in order to store the conditional reconfiguration from MN and SN, the terminal maintains two independent conditional reconfiguration variables (VarConditionalReconfig), one of which is associated with each conditional reconfiguration (the UE maintains two independent VarConditionalReconfig, one associated with each conditionalReconfiguration). In some embodiments, based on the inter-SN scenario, there are the following examples: 1> if reconfigurationWithSync was included in spCellConfig of an MCG or SCG and when MAC of an NR cell group successfully completes a Random Access procedure triggered above; or (or) 1> if sl-PathSwitchConfig was included in reconfigurationWithSync included in spCellConfig of an MCG, and when successfully sending RRCReconfigurationComplete message (ie, PC5 RLC acknowledgement is received from target L2 U2N Relay UE)): 2> If it is running, stop timer T304 for that cell group if running; 2> If sl-PathSwitchConfig was included in reconfigurationWithSync: 3> Stop timer T420; 3> Release all radio resources, including release of the RLC entities and the MAC configuration at the source side; 3> reset MAC used in the source cell; NOTE 2b: PDCP and SDAP configured by the source prior to the path switch that are reconfigured and re-used by target when delta signalling is used, are not released as part of this procedure. 2> If it is running, stop timer T310 for source SpCell (stop timer T310 for source SpCell if running); 2> apply the parts of the CSI reporting configuration, the scheduling request configuration and the sounding RS configuration that do not require the UE to know the SFN of the respective target SpCell, if any; 2> apply the parts of the measurement and the radio resource configuration that require the UE to know the SFN of the respective target SpCell (eg measurement gaps, periodic CQI reporting, scheduling request configuration, sounding RS configuration), if any, upon acquiring the SFN of that target SpCell; 2> for each DRB configured as DAPS bearer, request uplink data switching to the PDCP entity, as specified in TS 38.323[5]; 2>if the reconfigurationWithSync was included in spCellConfig of an MCG: 3>If T390 is running: 4> Stop timer T390 for all access categories; 4>Perform the actions as specified in 5.3.14.4. 3>If T350 is running: 4> Stop timer T350; 3> if RRCReconfiguration does not include dedicatedSIB1-Delivery and 3> If the active downlink BWP, which is indicated by the firstActiveDownlinkBWP-Id for the target SpCell of the MCG, has a common search space configured by searchSpaceSIB1: 4> Get the target SpCell of MCG according to TS 38.213

[0013] acquire the SIB1, which is scheduled as specified in TS 38.213

[0013] , of the target SpCell of the MCG; 2> if the reconfigurationWithSync was included in spCellConfig of an MCG; or (or) 2> If the reconfigurationWithSync was included in spCellConfig of an SCG and the CPA or CPC was configured: 3> remove all the entries in the condReconfigList within the MCG and the SCG VarConditionalReconfig except for the entries in which subsequentCondReconfig is present, if any; 3> remove all the entries within VarConditionalReconfiguration as specified in TS 36.331

[0010] , clause 5.3.5.9.6, if any; 3> for each measId of the MCG measConfig,if configured,and for each measId of the SCG measConfig,if configured,if the associated reportConfig has a reportType set to condTriggerConfig: 4> if the reportConfigId is not associated with any measId indicated by the condExecutionCond or the condExecutionCondSCG in an entry of condReconfigList in VarConditionalReconfig in which subsequentCondReconfig is included; and (and) 4> if the reportConfigId is not associated with any measId indicated by the condExecutionCond or the condExecutionCondSCG in an entry of subsequentCondReconfig in an entry of condReconfigList in VarConditionalReconfig: 5>Remove the entry with the matching reportConfigId from the reportConfigList within the VarMeasConfig; 4> if the associated measObjectId is only associated to a reportConfig with reportType set to condTriggerConfig; and (and) 4> if the measObjectId is not associated with any measId indicated by the condExecutionCond or the condExecutionCondSCG in an entry of condReconfigList in VarConditionalReconfig in which subsequentCondReconfig is included; and (and) 4> if the measObjectId is not associated with any measId indicated by the condExecutionCond or the condExecutionCondSCG in an entry of subsequentCondReconfig in an entry of condReconfigList in VarConditionalReconfig: 5>remove the entry with the matching measObjectId from the measObjectList within the VarMeasConfig; 4>remove the entry with the matching measId from the measIdList within the VarMeasConfig. In some embodiments, for SN initiated intra-SN subsequent CPC without MN participation, MN does not know which intra-SN subsequent CPC configurations the source SN has configured for the terminal. When SN change is executed, the terminal will be disconnected from the source SN and connected to a new SN, and the SN initiated intra-SN subsequent CPC configurations configured by the source SN will become invalid. However, since MN does not know which SN initiated intra-SN subsequent CPCs the source SN has configured and the configuration identifiers corresponding to these configurations, MN cannot delete these configurations. For the terminal, the existing process requires the retention of SN initiated intra-SN subsequent CPC, which will result in inconsistency in the configurations of subsequent CPC stored on the terminal side and the network side, which may trigger uncontrollable terminal behavior, such as triggering the SN initiated intra-SN subsequent CPC configured by the source SN. In some embodiments, in a communication system, a network device may provide a terminal with multiple "candidate cells (or candidate cell groups)". In some embodiments, the network device may subsequently control the terminal to change among multiple "candidate cells (or candidate cell groups)" through layer (L) 1 signaling or L2 signaling. The L1 signaling may be, for example, downlink control information (DCI). The L2 signaling may be, for example, media access control (MAC) information. The method comprises the following steps: a) performing a MAC control element (CE) to control a network. For example, the working cell (or cell group) is changed from "candidate cell (or candidate cell group) -1" to "candidate cell (or candidate cell group) -2". Among them, one serving cell (or serving cell group) may correspond to one or more "candidate cells (or candidate cell groups)". In some embodiments, the L1 or L2-triggered mobility (L1 / L2-triggered mobility, LTM) process can reduce the mobility delay of the terminal. In some embodiments, LTM is a PCell (or PSCell) cell switch procedure that the network triggers via MAC CE based on L1 measurements. In some embodiments, LTM may include subsequent LTM, wherein subsequent LTM is a cell switch procedure between candidate cells, during which the network device does not need to reconfigure LTM for the terminal. (subsequent LTM is a cell switch procedures between candidate cells where the UE does not need to be reconfigured by the network.) In some embodiments, during the LTM process, the base station receives an L1 measurement report from a terminal, and based on the measurement report, the base station changes the serving cell of the terminal by a cell switch command carried by a MAC CE. The cell switch command indicates an LTM candidate cell configuration that the gNB previously prepared and provided to the UE through RRC signalling. Then the UE switches to the target cell according to the cell switch command. (LTM is a procedure in which a gNB receives L1 measurement report(s)from a UE,and on their basis the gNB changes UE's serving cell by a cell switch command signaled via a MAC CE.The cell switch command indicates an LTM candidate cell configuration that the gNB previously prepared and provided to the UE through RRC signalling.Then the UE switches to the target cell according to the cell switch command.) In some embodiments, LTM may be used to trigger a change of PCell or MCG and / or a change of PSCell or SCG. LTM may also be used to trigger a change of SCell. Exemplarily, the LTM used to trigger the change of PCell or MCG can be called MCG LTM. Exemplarily, the LTM used to trigger a change of a PSCell or SCG may be referred to as an SCG LTM. It should be noted that the terms "change", "alter", "switch", "move" and the like can be used interchangeably. In some embodiments, in a communication system, layer 1 is a physical layer (PHY); layer 2 includes MAC, radio link control (RLC) and packet data convergence protocol (PDCP), and layer 3 (L3) is a radio resource control (RRC) layer. Then, in LTM, the network device sends configuration information of candidate cells for LTM to the terminal in advance through layer 3 signaling (such as RRC signaling). The network device receives a layer 1 (L1) measurement report from the terminal. On this basis, the network device sends a cell switching instruction through layer 2 signaling (such as MAC CE) to change the service cell of the terminal. Then, the terminal triggers cell switching by selecting the configuration information of the specified LTM candidate cell as the configuration information of the target cell of the network device. The configuration information of the LTM candidate cell can only be added, modified and released by the network device through RRC signaling. In some embodiments, a "LTM candidate cell" may also be referred to as a "candidate cell", which is used for the LTM process of the terminal. In some embodiments, the network device may configure multiple LTM candidate cells for the terminal according to the cell group. The multiple LTM candidate cells may belong to the same cell group or to different cell groups. In some embodiments, the LTM candidate cells may also be referred to as LTM candidate cell groups. In some embodiments, for an LTM candidate cell, the network device may configure the LTM candidate configuration, and the LTM candidate configuration may include but is not limited to at least one of the following: a configuration identifier, and a cell configuration corresponding to the configuration identifier. Exemplarily, the above-mentioned configuration identifier may be used to indicate the cell configuration of the LTM candidate cell, and the configuration identifier may be understood as an index, an identity (ID), etc. of the cell configuration. The cell configuration corresponding to the above-mentioned configuration identifier may be a candidate configuration corresponding to the target cell accessed when triggering a mobility operation configured by the network device for the terminal. In one embodiment, the LTM candidate configuration may be configured through RRC signaling, such as RRC configuration (such as RRC configuration or RRC reconfiguration). In some embodiments, for an LTM candidate cell, the network device may further configure reference configuration information for the terminal. The LTM candidate configuration and the reference configuration of the same LTM candidate cell may be used to jointly determine the complete configuration of the LTM candidate cell. The terminal may determine the LTM candidate cell based on the complete configuration. In one embodiment, the reference configuration information may be configured via RRC signaling, such as RRC configuration (such as RRC configuration or RRC reconfiguration). In some embodiments, the reference configuration may be understood as an incremental configuration of the LTM candidate configuration. In some embodiments, the LTM process may include the following parts: LTM preparation, early synchronization, LTM execution, and LTM completion. In some embodiments, in LTM, intra-node LTM (such as intra-DU LTM, intra-DU LTM and intra-CU LTM) can be supported. Furthermore, with the evolution of wireless technology, LTM will be extended to the following scenarios: inter-node LTM (such as inter-CU LTM) and conditional LTM (such as conditional LTM). Exemplarily, the MCG LTM may be an inter-MN MCG LTM or an intra-MN MCG LTM. Exemplarily, the SCG LTM may be an inter-SN SCG LTM or an intra-SN SCG LTM. Exemplarily, for conditional LTM, the LTM may be triggered by the terminal based on a condition, that is, the terminal determines whether to execute the LTM based on whether the condition is satisfied. In some embodiments, the above-mentioned "inter-node" may also be described as "inter-access network node", "inter-access network device", "inter-base station", "between CU and CU", etc. In some embodiments, the above-mentioned "intra-node" may also be described as "intra-access network node", "intra-access network device", "intra-base station", "between CU and DU", etc. In some embodiments, the access network node associated with the serving cell (or source cell) may be described as a serving access network node, a serving access network device, a serving base station, etc. In some embodiments, the access network node associated with the candidate cell may be described as a candidate access network node, a candidate access network device, a candidate base station, etc. In some embodiments, the access network node associated with the target cell may be described as a target access network node, a target access network device, a target base station, etc. In some embodiments, the access network node associated with the target cell may be a target MN or a target SN corresponding to the target cell. FIG2a is a schematic diagram of a communication method interaction according to an embodiment of the present disclosure. As shown in FIG2a, the present disclosure embodiment relates to a communication method, which is used in a communication system 100, and the method includes: Step S2101 , the network device 102 sends fourth information to the terminal 101 . In some embodiments, the terminal 101 receives fourth information sent by the network device 102 . The network device 102 includes an MN and an SN. The network device 102 referred to in the following of the present disclosure may refer to an MN, may refer to an SN, or may refer to an MN and an SN. For example, the network device 102 sends the fourth information to the terminal 101, and the MN may send the fourth information to the terminal, or the SN may send the fourth information to the terminal, or both the MN and the SN may send the fourth information to the terminal. In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably. In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc. In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", etc. can be used interchangeably. In some embodiments, the name of the fourth information is not limited, and it can be, for example, "indication information", "indication command" or "configuration information", etc. In some embodiments, the fourth information is used to configure a change in PSCell, for example, from A to B. In some embodiments, the PSCell change may include an inter-SN PSCell, that is, the SN is changed, resulting in the PSCell changing from A to B. The PSCell change may include an intra-SN PSCell change, that is, the SN is not changed, but the PSCell within the SN is changed from A to B. In some embodiments, the fourth information may be, for example, a cell change command for PSCell change. At this time, the network device 102 may be a MN or a SN. That is, the terminal 101 receives the fourth information sent by the MN or the SN. In some embodiments, the fourth information may be an RRC Reconfiguration message for PSCell change. The fourth information includes synchronous reconfiguration (reconfiguration with sync) corresponding to the PSCell. In some embodiments, if the fourth information is sent by the SN to the terminal, the fourth information is used to configure intra-SN primary and secondary cell change without MN involvement (intra-SN PSCell change without MN involvement). In some embodiments, if the fourth information is sent by the MN to the terminal, the fourth information may be included in the handover command. In some embodiments, the terminal 101 receives the fourth information sent by the MN or the SN and determines to perform a PSCell change. Step S2102 , the network device 102 pre-configures the fifth information to the terminal 101 . In some embodiments, the terminal 101 receives fifth information preconfigured by the network device 102 . In some embodiments, the fifth information is used for mobility configuration, that is, to configure the terminal to perform a mobility operation. In the present disclosure, the mobility operation configured by the fifth information is referred to as a second mobility operation. It can be understood that the fifth information is pre-configured, that is, the network device is pre-configured to the terminal, and the terminal does not directly specify the second mobility operation. The terminal can activate the fifth information through the activation indication of the network device in a subsequent process, and perform the second mobility operation based on the fifth information. Alternatively, the terminal triggers the fifth information by itself in a subsequent process, and performs the second mobility operation based on the fifth information. The present disclosure also involves a first mobility operation, which represents the current mobility operation of the terminal, and can also be understood as a mobility operation before the terminal performs the second mobility operation based on the fifth information. In some embodiments, the network device 102 may be a MN, that is, the MN preconfigures the fifth information to the terminal 101 . In some embodiments, the terminal may perform the second mobility operation according to the fifth information. It can be understood that the fifth information is preconfigured by the network device to the terminal, and the fifth information is stored in the terminal. In some embodiments, after receiving the fifth information and performing a mobility operation, the terminal 101 determines to perform a PSCell change. In some embodiments, the second mobility operation may include at least one of the following: subsequent CPC between SNs initiated by MN; subsequent CPC between SNs initiated by SN; CPC between SNs initiated by MN; CPC between SNs initiated by SN; CPC within SN initiated by SN without MN participation; subsequent CPC within SN initiated by SN without MN participation; conditional handover (CHO) with SN change; CHO without SN change. In some embodiments, the name of the fifth information is not limited, and it may be, for example, "pre-configuration information", "mobility configuration information", etc. Step S2103: Terminal 101 determines to perform a PSCell change. In some embodiments, the terminal 101 may determine to perform a PSCell change upon receiving the fourth information. The fourth information is used to configure the change of the PSCell. That is, the network device instructs the terminal to perform a PSCell change. When the terminal receives the information for instructing the change of the PSCell, it may determine to perform a PSCell change. In some embodiments, the terminal 101 may determine to perform a PSCell change when receiving the fifth information and performing a second mobility operation. The fifth information is used for mobility configuration. That is, the terminal may receive information for mobility configuration, perform a second mobility operation based on the information, and determine to perform a PSCell change. It can be understood that the fourth information is used to directly instruct to change the PSCell. Although the fifth information does not explicitly instruct to change the PSCell, the terminal can determine to change the PSCell based on receiving the fifth information and performing a mobility operation. Step S2104: In response to executing the PSCell change, the terminal 101 performs an operation on the first information. In some embodiments, the terminal 101 may perform an operation on the first information in response to performing a PSCell change. The first information is information associated with the SN and used for the first mobility operation. For example, the first information may be called mobility configuration information, which is used to configure the terminal to perform the first mobility operation. It can be understood that the first information is information sent by the network device to the terminal and stored in the terminal. In some embodiments, the first information is information represented or transmitted in SN format. For example, the information represented or transmitted in SN format includes information associated with SCG in an RRC Reconfiguration message received via SRB3. Or alternatively, information associated with SCG by being embedded in an RRC Reconfiguration message received via SRB1. Exemplarily, the configuration in SN format is associated with SCG, that is included in the RRC Reconfiguration message received via SRB3, or, alternatively, included within a RRCReconfiguration message embedded in a RRCReconfiguration message received via SRB1. In some embodiments, the first information includes at least one of the following: information based on SN and sent to the terminal via SRB3 for a first mobility operation; information based on SN and sent to the terminal via a master node for a first mobility operation. In some embodiments, information based on the secondary node SN and sent to the terminal through SRB3 for the first mobility operation; information based on the secondary node SN and sent to the terminal through the primary node transparent transmission for the first mobility operation can be understood as information represented or transmitted in SN format. In some embodiments, the first information may be information sent by the SN to the terminal via SRB3, which is used by the terminal to perform the first mobility operation. That is, the first information may be information sent to the terminal via SRB3, that is, information in the SN format. The first information is used by the terminal to perform the first mobility operation. Therefore, the first information may also be referred to as first mobility configuration information for configuring the terminal to perform the first mobility operation. In some embodiments, the first information may be information sent by the SN to the terminal via MN transparent transmission, which is used by the terminal to perform the first mobility operation. That is, the first information may be information transparently transmitted to the terminal via MN, that is, information in the SN format. In some embodiments, the first mobility operation includes at least one of: subsequent CPAC; LTM. Exemplarily, the subsequent CPAC includes a subsequent CPAC within the SN initiated by the SN without the participation of the MN. Exemplarily, the information associated with the SN for subsequent CPAC is the information of the subsequent CPAC generated or transmitted in the SN format. Exemplarily, the information associated with the SN for subsequent CPAC is information for subsequent CPAC within the SN initiated by the SN without the participation of the MN. Exemplarily, the LTM includes an SCG LTM, such as an intra-SN LTM for SCG, or an intra-CU LTM for SCG. Exemplarily, the information for LTM associated with SN is the information of LTM generated or transmitted in SN format. Exemplarily, the information for LTM associated with the SN is information for LTM within the SN initiated by the SN without the participation of the MN. In some embodiments, the operation on the first information includes at least one of the following: deleting the first information; retaining the first information; suspending the first information; not suspending the first information; and restoring the first information. In some embodiments, when a PSCell change is performed, the first information stored in the terminal may become redundant information, or trigger the terminal to generate an uncontrollable operation, and therefore, the first information may be deleted or suspended. For example, when the PSCell change is between SNs, that is, when an SN change occurs, it can be considered that the first information will become redundant information, or trigger the terminal to generate an uncontrollable operation, and execute the deletion or suspension of the first information. Among them, suspension can be understood as not deleting the first information, but not using the first information for the first mobility operation. In some embodiments, deleting or suspending the first information includes: deleting or suspending a first variable stored in the terminal. The first variable is a variable of the SCG and is used to store the first information. That is, deleting the first information may be deleting the first variable storing the first information. In some embodiments, since the terminal needs to delete the CPC configuration that does not support subsequent CPC regardless of executing the first PSCell change or the second PSCell change, after deleting the first information, other information except the first information in the first variable can be deleted, that is, all entries in the first variable are deleted, that is, the first variable is cleared. In some embodiments, the first information is deleted or suspended, and the measurement configuration may also be deleted, the measurement configuration corresponds to the measurement identifier, and the measurement identifier is the measurement identifier of the execution condition corresponding to the first variable. That is, after the terminal is in the first variable or clears the first variable, it is also necessary to delete the measurement configuration corresponding to the measurement identifier corresponding to the execution condition contained in the first variable. In some embodiments, the first variable may be, for example, a variable (VarConditionalReconfig) for storing conditional reconfiguration. In some embodiments, when the PSCell change is performed, the first information stored in the terminal can still continue to be used, so the first information can be retained, or the first information is not suspended. For example, when the change of the PSCell is within the SN, that is, when there is no change in the SN, it can be determined that the first information can continue to be used, that is, it is determined to retain or not suspend the first information. In some embodiments, when a PSCell change is performed, the first information can be restored. Restoring the first information can also be referred to as re-enabling the first information. That is, the operation of re-enabling the first information suspended by the terminal is performed. For example, if the PSCell of the terminal changes from A to B, and the first information corresponding to A is X, then X can be suspended. If the terminal changes the PSCell again, from B to A, or from another PSCell to A, then X can be restored, that is, X can be re-enabled. Alternatively, if the terminal restarts, and the PSCell after the restart is A, the terminal can restore X. In some embodiments, the PSCell change includes a first PSCell change and a second PSCell change. The first PSCell change is a PSCell change between SNs. The second PSCell change is a PSCell change within an SN. A PSCell change between SNs can be understood as a change in the SN, and a PSCell change within an SN can be understood as no change in the SN. For this, reference can be made to the explanations in the other embodiments above, and the present disclosure will not be repeated here. In some embodiments, when the PSCell is changed to the first PSCell, the operation on the first information includes deleting the first information, or suspending the first information. In some embodiments, the first PSCell change includes at least one of the following: a PSCell change initiated by the MN, for example, the target PSCell and the source PSCell belong to different SNs; a CHO initiated by the MN, for example, the CHO is a CHO without SN change, that is, the target PSCell and the source PSCell after the CHO belong to different SNs; CPC between SNs initiated by the MN or SN; subsequent CPC between SNs initiated by the MN or SN. Among them, the CPC between SNs initiated by the MN or SN is configured through the variables of the MCG, or, the subsequent CPC between SNs initiated by the MN or SN is configured through the variables of the MCG. For example, the variable of the MCG is a variable (VarConditionalConfig) used by the MCG to store conditional configurations. In some embodiments, when the PSCell is changed to the second PSCell, the operation on the first information includes retaining the first information, or not suspending the first information. In some embodiments, the second PSCell change includes at least one of the following: a PSCell change within the SN initiated by the SN without the participation of the MN; a CPC within the SN initiated by the SN without the participation of the MN; a subsequent CPC within the SN initiated by the SN without the participation of the MN; a PSCell change initiated by the MN, and the target PSCell and the source PSCell belong to the same SN; a CHO initiated by the MN without an SN change, that is, after executing the CHO, the target PSCell and the source PSCell belong to the same SN; an inter-SN CPC initiated by the MN or SN, and the target PSCell and the source PSCell belong to the same SN; a subsequent CPC between SNs initiated by the MN or SN, and the target PSCell and the source PSCell belong to the same SN. Among them, the target PSCell represents the PSCell after the corresponding PSCell change, and the source PSCell represents the PSCell before the corresponding PSCell change. In some embodiments, when the PSCell is changed to a first PSCell change, the terminal may perform an operation on the first information by default in response to performing the first PSCell change. In some embodiments, when the PSCell is changed to the first PSCell, the terminal may perform an operation on the first information in response to performing the first PSCell change and receiving the second information, wherein the second information is an instruction sent by the network device to the terminal to instruct to perform an operation on the first information. In some embodiments, when a SN change triggered by an MN occurs, the MN may send sixth information to the SN. The sixth information is used by the SN to perform an operation on the first information. The first information is stored in the terminal. The SN may send seventh information to the terminal, and the seventh information is used to instruct the terminal to perform an operation on the first information, and the terminal performs the operation on the first information. Alternatively, the SN may directly perform the operation on the first information and inform the SN The present disclosure does not limit the situation where the terminal or SN changes. The sixth information may be, for example, an SN release request message. In some embodiments, the SN may send eighth information to the MN after performing an operation on the first information, for indicating feedback on the sixth information. For example, the eighth information may be an SN release acknowledgement (Ack) message. In some embodiments, the terminal may perform an operation on the first information in response to performing a PSCell change and determining that the target PSCell has been successfully accessed. The target PSCell is the newly accessed PSCell after the PSCell change, or a candidate cell. That is, although the terminal has performed a PSCell change, there may be two results of performing the PSCell change, one is successful access to the target PSCell, and the other is failure to access the target PSCell. If access to the target PSCell is successful, it can be considered that the PSCell change is successful, and the operation on the first information is performed. If access to the target PSCell fails, it can be considered that the PSCell has not been changed successfully, and the operation on the first information may not be performed. The communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2104. For example, step S2104 may be implemented as an independent embodiment, and step S2103 and step S2104 may be implemented as independent embodiments, but are not limited thereto. In some embodiments, step S2101 and step S2102 may be executed in an interchangeable order or simultaneously. In some embodiments, step S2101, step S2102, and step S2103 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, step S2101 and step S2102 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 2a. FIG2b is a schematic diagram of a communication method interaction according to an embodiment of the present disclosure. As shown in FIG2b, an embodiment of the present disclosure relates to a communication method, which is used in a communication system 100, and the method includes: Step S2201: the network device 102 sends fourth information to the terminal 101. The optional implementation of step S2201 can refer to the optional implementation of step S2101 in FIG. 2a and other related parts in the embodiment involved in FIG. 2, which will not be described in detail here. Step S2202 , the network device 102 pre-configures the fifth information to the terminal 101 . The optional implementation of step S2202 can refer to the optional implementation of step S2102 in FIG. 2a and other related parts in the embodiment involved in FIG. 2, which will not be described in detail here. Step S2203: Terminal 101 determines to perform PSCell change. The optional implementation of step S2203 can refer to the optional implementation of step S2103 in FIG. 2a and other related parts in the embodiment involved in FIG. 2, which will not be described in detail here. Step S2204: the network device 102 sends second information to the terminal 101. In some embodiments, the terminal 101 receives second information sent by the network device 102 . In some embodiments, the name of the second information is not limited, and it may be, for example, "indication information", "configuration information", etc. In some embodiments, the second information is an instruction for instructing the terminal to perform an operation on the first information. In some embodiments, the second information includes a displayed instruction to perform an operation on the first information, or the second information includes an implicit instruction to perform an operation on the first information. The displayed instruction can be understood as a direct instruction, that is, the network device directly instructs the terminal to perform an operation on the first information. The implicit instruction can be understood as an indirect instruction, that is, the network device does not directly instruct the terminal to perform an operation on the first information, but the terminal can determine whether to perform the operation on the first information based on the content contained in the first information. In some embodiments, when the second information includes an instruction to display an instruction to perform an operation on the first information, the second information can be indicated separately, or indicated in the mobility configuration or instruction. For example, the second information can be carried by the fifth information and indicated by a bit, for example, if the bit is 1, it indicates that the first information is deleted or suspended on the terminal, and if the bit is 0, it indicates that the first information is retained or not suspended on the terminal. In some embodiments, when the second information includes an implicit instruction to perform an operation on the first information, the second information can be indicated separately, or indicated in the CPC configuration between SNs initiated by the MN or SN, or indicated in the subsequent CPC configuration between SNs initiated by the MN or SN, or indicated in the fourth information. For example, the second information can be a cell creation identifier (cell set identity document, cell set ID) or a group identifier (group identity document, group ID) corresponding to the PSCell after the PSCell is changed. If the second information is the same as the cell set ID corresponding to the current PSCell of the terminal, it is determined to retain or not suspend the first information. If the second information is different from the cell set ID corresponding to the current PSCell of the terminal, it can be determined to delete or suspend the first information. Among them, the current PSCell of the terminal can be understood as the PSCell before the PSCell is changed. Step S2205 : In response to executing the first PSCell change and receiving the second information, the terminal 101 performs an operation on the first information. In some embodiments, the terminal may perform an operation on the first information when the first PSCell change is performed and the second information is received. In some embodiments, the second information includes instructions that explicitly instruct to perform an operation on the first information, or the second information includes instructions that implicitly instruct to perform an operation on the first information. In some embodiments, if the terminal responds to executing the PSCell change but does not receive the second information, it may be considered that the operation on the first information is not performed temporarily. For example, it may be confirmed whether to perform the operation on the first information. The communication method involved in the embodiment of the present disclosure may include at least one of steps S2201 to S2205. For example, step S2205 may be implemented as an independent embodiment, and step S2204 and step S2205 may be implemented as independent embodiments, but are not limited thereto. In some embodiments, step S2201 and step S2202 may be executed in an interchangeable order or simultaneously. In some embodiments, step S2201, step S2202, step S2203 and step S2204 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, step S2201, step S2202, and step S2203 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, reference may be made to other optional implementations recorded before or after the specification corresponding to FIG. 2b. FIG2c is a schematic diagram of a communication method interaction according to an embodiment of the present disclosure. As shown in FIG2c, an embodiment of the present disclosure relates to a communication method, which is used in a communication system 100, and the method includes: Step S2301: the network device 102 sends fourth information to the terminal 101. The optional implementation of step S2301 can refer to the optional implementation of step S2101 in Figure 2a and other related parts in the embodiment involved in Figure 2, which will not be repeated here. Step S2302 , the network device 102 pre-configures the fifth information to the terminal 101 . The optional implementation of step S2302 can refer to the optional implementation of step S2102 in FIG. 2a and other related parts in the embodiment involved in FIG. 2, which will not be described in detail here. Step S2303: Terminal 101 determines to perform a PSCell change. The optional implementation of step S2203 can refer to the optional implementation of step S2103 in FIG. 2a and other related parts in the embodiment involved in FIG. 2, which will not be described in detail here. Step S2304: the network device 102 sends second information to the terminal 101. The optional implementation of step S2204 can refer to the optional implementation of step S2204 in Figure 2b and other related parts in the embodiment involved in Figure 2, which will not be repeated here. Step S2305 : In response to executing the first PSCell change and receiving the second information, the terminal 101 suspends the first information. In some embodiments, the first information is suspended so that the first information can be restarted later. In some embodiments, step S2304 may not be performed, and the first information may be suspended in response to the first PSCell change. That is, the second information may not be received, and whether the second information is received is not considered, and the first information may be suspended only in response to the first PSCell change. In some embodiments, when executing the suspension of the first information, the terminal stops executing at least one of the following: measuring the measurement identifier corresponding to the execution condition, the execution condition is the execution condition of the suspended first information; evaluating the execution condition of the suspended mobility configuration information; executing the first mobility operation, the first mobility operation is the first mobility operation corresponding to the suspended first information. Step S2306 , the network device 102 sends third information to the terminal 101 . In some embodiments, the terminal 101 receives third information sent by the network device 102 . In some embodiments, the name of the third information is not limited, and it may be, for example, "indication information", "re-enabling information", etc. In some embodiments, the third information is used to indicate that the suspended first information is enabled. In some embodiments, the terminal corresponds to one or more first information groups, the first information group corresponds to an index, and the third information is used to indicate the index (index) corresponding to the enabled first information. That is, the third information is used to indicate which first information group the enabled first information belongs to. Among them, a first information group can be the first information of multiple PSCells corresponding to an SN. Multiple first information groups can be the first information of a group of PSCells corresponding to each SN in multiple SNs. The third information can indicate the index corresponding to the first information, that is, indicate which first information group the first information belongs to. For another example, the third information can indicate which first information group the first information belongs to, and indicate which first information of the first information group the first information belongs to. In some embodiments, each SN corresponds to an index, and the MN may allocate an index to the SN, and the SN configures the index corresponding to the SN when initiating a subsequent CPC within the SN. The terminal may store the suspended first information corresponding to the SN at the index. In some embodiments, the terminal may delete one or more first information groups to save storage space. For example, the first information group may be deleted based on the index corresponding to the first information group. Step S2307: Terminal 101 activates the suspended first information. In some embodiments, the terminal may enable the suspended first information based on the received third information. In some embodiments, if the third information is used to indicate the suspended first information, the terminal may enable the suspended first information based on the third information. In some embodiments, if the terminal has a lot of first information on hold, an index may be configured. The third information may be used to indicate the index corresponding to the first information on hold. The terminal may determine the enabled first information in the corresponding index based on the third information and enable the first information. The communication method involved in the embodiment of the present disclosure may include at least one of step S2301 to step S2307. For example, step S2307 may be implemented as an independent embodiment, and step S2306 and step S2307 may be implemented as independent embodiments, but are not limited thereto. In some embodiments, step S2301 and step S2302 may be executed in an interchangeable order or simultaneously. In some embodiments, step S2301, step S2302, step S2303, step S2304, step S2305 and step S2306 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, step S2301, step S2302, step S2303, step S2304, and step S2305 are optional, and one or more of these steps may be omitted or replaced in different embodiments. FIG3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3a, the present disclosure embodiment relates to a communication method, which is executed by a terminal 101, and the method includes: Step S3101, obtain the fourth information. The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the terminal 101 receives the fourth information sent by the network device 102, but is not limited thereto, and may also receive the fourth information sent by other entities. In some embodiments, terminal 101 obtains fourth information specified by the protocol. In some embodiments, terminal 101 obtains the fourth information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain fourth information. In some embodiments, step S3101 is omitted, and the terminal 101 autonomously implements the function indicated by the fourth information, or the above function is default or by default. Step S3102, obtain the fifth information. The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the terminal 101 receives the fifth information sent by the network device 102, but is not limited thereto, and may also receive the fifth information sent by other entities. In some embodiments, terminal 101 obtains fifth information specified by the protocol. In some embodiments, terminal 101 obtains the fifth information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain the fifth information. In some embodiments, step S3102 is omitted, and the terminal 101 autonomously implements the function indicated by the fifth information, or the above function is default or acquiescent. Step S3103, determine to execute PSCell change. The optional implementation of step S3103 can refer to the optional implementation of step S2103 in FIG. 2a and other related parts in the embodiment involved in FIG. 2a, which will not be described in detail here. Step S3104: In response to performing a PSCell change, perform an operation on the first information. The optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. The communication method involved in the embodiment of the present disclosure may include at least one of step S3101 to step S3104. For example, step S3104 may be implemented as an independent embodiment, and step S3103 and step S3104 may be implemented as independent embodiments, but are not limited thereto. In some embodiments, step S3101 and step S3102 may be executed in an interchangeable order or simultaneously. In some embodiments, step S3101, step S3102, and step S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, step S3101 and step S3102 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 3a. FIG3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3b, the present disclosure embodiment relates to a communication method, which is executed by a terminal 101, and the method includes: Step S3201, obtain the fourth information. The optional implementation of step S3201 can refer to the optional implementation of step S2101 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the terminal 101 receives the fourth information sent by the network device 102, but is not limited thereto, and may also receive the fourth information sent by other entities. In some embodiments, terminal 101 obtains fourth information specified by the protocol. In some embodiments, terminal 101 obtains the fourth information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain fourth information. In some embodiments, step S3201 is omitted, and the terminal 101 autonomously implements the function indicated by the fourth information, or the above function is default or acquiescent. Step S3202, obtain the fifth information. The optional implementation of step S3202 can refer to the optional implementation of step S2102 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the terminal 101 receives the fifth information sent by the network device 102, but is not limited thereto, and may also receive the fifth information sent by other entities. In some embodiments, terminal 101 obtains fifth information specified by the protocol. In some embodiments, terminal 101 obtains the fifth information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain the fifth information. In some embodiments, step S3202 is omitted, and the terminal 101 autonomously implements the function indicated by the fifth information, or the above function is default or default. Step S3203, determine to execute PSCell change. The optional implementation of step S3203 can refer to the optional implementation of step S2103 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. Step S3204, obtaining second information. The optional implementation of step S3204 can refer to the optional implementation of step S2204 in Figure 2b, and other related parts in the embodiment involved in Figure 2b, which will not be repeated here. In some embodiments, the terminal 101 receives the second information sent by the network device 102, but is not limited thereto and may also receive the second information sent by other entities. In some embodiments, terminal 101 obtains second information specified by the protocol. In some embodiments, terminal 101 obtains the second information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain the second information. In some embodiments, step S3204 is omitted, and the terminal 101 autonomously implements the function indicated by the second information, or the above function is default or acquiescent. Step S3205: In response to executing the first PSCell change and receiving the second information, perform an operation on the first information. The optional implementation of step S3205 can refer to the optional implementation of step S2205 in Figure 2b, and other related parts in the embodiment involved in Figure 2b, which will not be repeated here. The communication method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3205. For example, step S3205 may be implemented as an independent embodiment, and step S3204 and step S3205 may be implemented as independent embodiments, but are not limited thereto. In some embodiments, step S3201 and step S3202 may be executed in an interchangeable order or simultaneously. In some embodiments, step S3201, step S3202, step S3203 and step S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, step S3201, step S3202, and step S3203 are optional, and one or more of these steps may be omitted or replaced in different embodiments. FIG3c is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3c, the present disclosure embodiment relates to a communication method, which is executed by a terminal 101, and the method includes: Step S3301, obtain the fourth information. The optional implementation of step S3301 can refer to the optional implementation of step S2101 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the terminal 101 receives the fourth information sent by the network device 102, but is not limited thereto, and may also receive the fourth information sent by other entities. In some embodiments, terminal 101 obtains fourth information specified by the protocol. In some embodiments, terminal 101 obtains the fourth information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain fourth information. In some embodiments, step S3301 is omitted, and the terminal 101 autonomously implements the function indicated by the fourth information, or the above function is default or by default. Step S3302, obtain the fifth information. The optional implementation of step S3302 can refer to the optional implementation of step S2102 in FIG. 2a and the embodiment involved in FIG. 2a. Other related parts will not be elaborated here. In some embodiments, the terminal 101 receives the fifth information sent by the network device 102, but is not limited thereto, and may also receive the fifth information sent by other entities. In some embodiments, terminal 101 obtains fifth information specified by the protocol. In some embodiments, terminal 101 obtains the fifth information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain the fifth information. In some embodiments, step S3302 is omitted, and the terminal 101 autonomously implements the function indicated by the fifth information, or the above function is default or default. Step S3303, determine to execute PSCell change. The optional implementation of step S3303 can refer to the optional implementation of step S2103 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. Step S3304, obtaining the second information. The optional implementation of step S3304 can refer to the optional implementation of step S2204 in Figure 2b and other related parts in the embodiment involved in Figure 2b, which will not be repeated here. In some embodiments, the terminal 101 receives the second information sent by the network device 102, but is not limited thereto and may also receive the second information sent by other entities. In some embodiments, terminal 101 obtains second information specified by the protocol. In some embodiments, terminal 101 obtains the second information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain the second information. In some embodiments, step S3304 is omitted, and the terminal 101 autonomously implements the function indicated by the second information, or the above function is default or acquiescent. Step S3305: In response to executing the first PSCell change and receiving the second information, suspending the first information. The optional implementation of step S3305 can refer to the optional implementation of step S2205 in Figure 2b and other related parts in the embodiment involved in Figure 2b, which will not be repeated here. Step S3306, obtaining third information. The optional implementation of step S3306 can refer to the optional implementation of step S2306 in Figure 2c, and other related parts in the embodiment involved in Figure 2c, which will not be repeated here. In some embodiments, the terminal 101 receives the third information sent by the network device 102, but is not limited thereto and may also receive the third information sent by other entities. In some embodiments, terminal 101 obtains third information specified by the protocol. In some embodiments, terminal 101 obtains the third information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain the third information. In some embodiments, step S3306 is omitted, and the terminal 101 autonomously implements the function indicated by the third information, or the above function is default or by default. Step S3307, enabling the suspended first information. The optional implementation of step S3307 can refer to the optional implementation of step S2307 in Figure 2c, and other related parts in the embodiment involved in Figure 2c, which will not be repeated here. The communication method involved in the embodiment of the present disclosure may include at least one of step S3301 to step S3307. For example, step S3307 may be implemented as an independent embodiment, and step S3306 and step S3307 may be implemented as independent embodiments, but are not limited thereto. In some embodiments, step S3301 and step S3302 may be executed in an interchangeable order or simultaneously. In some embodiments, step S3301, step S3302, step S3303, step S3304, step S3305 and step S3306 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, step S3301, step S3302, step S3303, step S3304, and step S3305 are optional, and one or more of these steps may be omitted or replaced in different embodiments. FIG3d is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3d , the embodiment of the present disclosure relates to a communication method, which is executed by a terminal 101, and the method includes: Step S3401, obtaining third information. The optional implementation of step S3401 can refer to the optional implementation of step S2306 in Figure 2c, and other related parts in the embodiment involved in Figure 2c, which will not be repeated here. In some embodiments, the terminal 101 receives the third information sent by the network device 102, but is not limited thereto and may also receive the third information sent by other entities. In some embodiments, terminal 101 obtains third information specified by the protocol. In some embodiments, terminal 101 obtains the third information from an upper layer(s). In some embodiments, terminal 101 performs processing to obtain the third information. In some embodiments, step S3401 is omitted, and the terminal 101 autonomously implements the function indicated by the third information, or the above function is default or default. Step S3402, enabling the suspended first information. The optional implementation of step S3402 can refer to the optional implementation of step S2307 in Figure 2c and other related parts in the embodiment involved in Figure 2c, which will not be repeated here. FIG3e is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3e, the present disclosure embodiment relates to a communication method, which is executed by a terminal 101, and the method includes: Step S3501, in response to performing a PSCell change, performing an operation on the first information. The optional implementation of step S3501 can refer to the optional implementation of step S2104 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the first information includes at least one of the following: information based on the secondary node SN and sent to the terminal through the wireless signaling bearer SRB3, which is used for the first mobility operation; information based on the SN and sent to the terminal through the primary node transparent transmission, which is used for the first mobility operation. In some embodiments, the first mobility operation includes at least one of the following: a subsequent conditional primary and secondary cell addition or change (subsequent CPAC); a layer 1 and layer 2 triggered mobility LTM. In some embodiments, the operation includes at least one of the following: deleting the first information; retaining the first information; suspending the first information; not suspending the first information; and restoring the first information. In some embodiments, the primary and secondary cell change includes a first primary and secondary cell change, the operation includes deleting first information, or the operation includes suspending first information; the first primary and secondary cell change is a primary and secondary cell change between SNs. In some embodiments, at least one of the following methods is used to determine whether to perform an operation on the first information: in response to a change in the first primary and secondary cells, the operation on the first information is performed by default; in response to a change in the first primary and secondary cells and receiving second information sent by a network device, the operation on the first information is performed; the second information includes an instruction that displays an instruction to perform the operation on the first information, or the second information includes an instruction that implicitly indicates to perform the operation on the first information. In some embodiments, performing an operation on the first information includes: deleting or suspending a first variable stored in the terminal, where the first variable is a variable of the secondary cell group and is used to store the first information. In some embodiments, the method further includes: deleting other information different from the first information in a first variable stored by the terminal, where the first variable is a variable of the secondary cell group and is used to store the first information. In some embodiments, the method further includes: deleting a measurement configuration, the measurement configuration corresponding to a measurement identifier, and the measurement identifier is a measurement identifier of an execution condition corresponding to the first variable. In some embodiments, the operation includes suspending the first information, and the method also includes stopping executing at least one of the following: measuring a measurement identifier corresponding to an execution condition, the execution condition being the execution condition of the suspended first information; evaluating the execution condition of the suspended mobility configuration information; and executing a first mobility operation, the first mobility operation being the first mobility operation corresponding to the suspended first information. In some embodiments, the method further includes: in response to receiving third information sent by the network device, enabling the suspended first information; the third information is used to indicate enabling the first information. In some embodiments, the terminal corresponds to one or more first information groups, the first information groups correspond to indexes, and the third information is used to indicate the index corresponding to the enabled first information. In some embodiments, the primary and secondary cell change includes a second primary and secondary cell change, the operation includes retaining the first information, or the operation includes not suspending the first information; the second primary and secondary cell change is a primary and secondary cell change within the SN. In some embodiments, before performing an operation on the first information, the method further includes: determining that the terminal successfully accesses the target primary and secondary cells, the target primary and secondary cells are primary and secondary cells newly accessed after the primary and secondary cells are changed, or candidate cells. In some embodiments, at least one of the following methods is used to determine whether to change the primary and secondary cells: fourth information sent by the master node or SN is received, and the fourth information is used to configure the change of the primary and secondary cells; based on fifth information pre-configured by the master node, a second mobility operation is performed, and the fifth information is used for mobility configuration. FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a, the embodiment of the present disclosure relates to a communication method, and the method includes: Step S4101: Send fourth information to the terminal. The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2, and other related parts in the embodiment involved in Figure 2, which will not be repeated here. In some embodiments, the network device 102 sends the fourth information to the terminal 101, but is not limited thereto. The network device 102 may also send the fourth information to other entities. information. Step S4102 pre-configures the fifth information to the terminal. The optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2, and other related parts in the embodiment involved in Figure 2, which will not be repeated here. In some embodiments, the network device 102 preconfigures the fifth information to the terminal 101, but is not limited thereto, and the fifth information may also be preconfigured to other entities. The communication method involved in the embodiment of the present disclosure may include at least one of step S4101 to step S4102. For example, step S4101 may be implemented as an independent embodiment, and step S4102 may be implemented as a separate embodiment. In some embodiments, step S4101 and step S4102 may be executed in an interchangeable order or simultaneously. In some embodiments, step S4101 or step S4102 is optional, and one of these steps may be omitted or replaced in different embodiments. In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 4a. FIG4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4b, the embodiment of the present disclosure relates to a communication method, and the method includes: Step S4201: Send fourth information to the terminal. The optional implementation of step S4201 can refer to the optional implementation of step S2101 in Figure 2a and other related parts in the embodiment involved in Figure 2, which will not be repeated here. In some embodiments, the network device 102 sends the fourth information to the terminal 101, but is not limited thereto, and the fourth information may also be sent to other entities. Step S4202: pre-configure fifth information to the terminal. The optional implementation of step S4202 can refer to the optional implementation of step S2102 in Figure 2a and other related parts in the embodiment involved in Figure 2, which will not be repeated here. In some embodiments, the network device 102 preconfigures the fifth information to the terminal 101, but is not limited thereto, and the fifth information may also be preconfigured to other entities. Step S4203: Send second information to the terminal. The optional implementation of step S4203 can refer to the optional implementation of step S2204 in Figure 2b and other related parts in the embodiment involved in Figure 2, which will not be repeated here. In some embodiments, the network device 102 sends the second information to the terminal 101, but is not limited thereto, and the second information may also be sent to other entities. The communication method involved in the embodiment of the present disclosure may include at least one of steps S4201 to S4203. For example, step S4203 may be implemented as an independent embodiment. In some embodiments, step S4201 and step S4202 may be executed in an interchangeable order or simultaneously. In some embodiments, step S4201 and step S4202 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, reference may be made to other optional implementations recorded before or after the specification corresponding to FIG. 4b. FIG4c is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4c, the embodiment of the present disclosure relates to a communication method, and the method includes: Step S4301: Send fourth information to the terminal. The optional implementation of step S4301 can refer to the optional implementation of step S2101 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the network device 102 sends the fourth information to the terminal 101, but is not limited thereto, and the fourth information may also be sent to other entities. Step S4302: pre-configure fifth information to the terminal. The optional implementation of step S4302 can refer to the optional implementation of step S2102 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the network device 102 preconfigures the fifth information to the terminal 101, but is not limited thereto, and the fifth information may also be preconfigured to other entities. Step S4303: Send second information to the terminal. The optional implementation of step S4303 can refer to the optional implementation of step S2204 in Figure 2b and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the network device 102 sends the second information to the terminal 101, but is not limited thereto. The network device 102 may also send the second information to other entities. information. Step S4304: Send third information to the terminal. The optional implementation of step S4304 can refer to the optional implementation of step S2306 in Figure 2c, and other related parts in the embodiment involved in Figure 2c, which will not be repeated here. In some embodiments, the network device 102 sends the third information to the terminal 101, but is not limited thereto, and the third information may also be sent to other entities. The communication method involved in the embodiment of the present disclosure may include at least one of step S4301 to step S4304. For example, step S4303 may be implemented as an independent embodiment. Step S4304 may be implemented as a separate embodiment. In some embodiments, step S4301 and step S4302 may be executed in an interchangeable order or simultaneously. In some embodiments, step S4301, step S4302, and step S4303 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, step S4301, step S4302, and step S4304 are optional, and one or more of these steps may be omitted or replaced in different embodiments. In some embodiments, reference may be made to other optional implementations recorded before or after the specification corresponding to FIG. 4c. FIG4d is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4d , the embodiment of the present disclosure relates to a communication method, and the method includes: Step S4401, sending second information to the terminal. The optional implementation of step S4401 can refer to the optional implementation of step S2204 in Figure 2b and other related parts in the embodiment involved in Figure 2, which will not be repeated here. In some embodiments, the network device 102 sends the second information to the terminal 101, but is not limited thereto, and the second information may also be sent to other entities. FIG5a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5a, the embodiment of the present disclosure relates to a communication method, and the method includes: Step S5101, the network device 102 sends second information to the terminal 101. The optional implementation of step S5101 can refer to S2204 of FIG. 2b and other related parts of the embodiment involved in FIG. 2b, which will not be described in detail here. In some embodiments, the above method may include the method of the above embodiments related to the communication system 100, the terminal 101, the network device 102, etc., which will not be repeated here. Step S5102: In response to a change in the first primary and secondary cells and receiving second information, the terminal performs an operation on the first information. The optional implementation of step S5102 can refer to S2205 of FIG. 2b and other related parts in the embodiment involved in FIG. 2b, which will not be described in detail here. FIG5b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5b, the embodiment of the present disclosure relates to a communication method, and the method includes: Step S5201: MN sends sixth information to SN. The optional implementation of step S5201 can be found in S2104 of FIG. 2a and other related parts of the embodiment involved in FIG. 2a, which will not be described in detail here. In some embodiments, the above method may include the method of the above embodiments related to the communication system 100, the terminal 101, the network device 102, etc., which will not be repeated here. Step S5202: SN receives the sixth information and performs an operation on the first information. The optional implementation of step S5202 can refer to S2104 of FIG. 2a and other related parts of the embodiment involved in FIG. 2a, which will not be described in detail here. In some embodiments, the above method may include the method of the above embodiments related to the communication system 100, the terminal 101, the network device 102, etc., which will not be repeated here. FIG5c is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5c, the embodiment of the present disclosure relates to a communication method, and the method includes: Step S5301: MN sends sixth information to SN. The optional implementation of step S5301 can be found in S2104 of FIG. 2a and other related parts of the embodiment involved in FIG. 2a, which will not be described in detail here. In some embodiments, the above method may include the method of the above embodiments related to the communication system 100, the terminal 101, the network device 102, etc., which will not be repeated here. Step S5302: SN sends the seventh information to terminal 101. The optional implementation of step S5302 can refer to S2104 of FIG. 2a and other related parts of the embodiment involved in FIG. 2a, which will not be described in detail here. In some embodiments, the above method may include the method of the above embodiments related to the communication system 100, the terminal 101, the network device 102, etc., which will not be repeated here. Step S5303: Terminal 101 performs an operation on the first information. The optional implementation of step S5303 can be found in S2104 of FIG. 2a and other related parts of the embodiment involved in FIG. 2a, which will not be described in detail here. In some embodiments, the above method may include the method of the above embodiments related to the communication system 100, the terminal 101, the network device 102, etc., which will not be repeated here. Step S5304: SN sends the eighth information to MN. The optional implementation of step S5304 can refer to S2104 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here. In some embodiments, the above method may include the method of the above embodiments related to the communication system 100, the terminal 101, the network device 102, etc., which will not be repeated here. The present disclosure also provides a communication method as follows: In some embodiments, after the UE performs SN change, the UE deletes the configuration of SN initiated intra-SN subsequent CPC configured by the SN. In some embodiments, the configuration of SN initiated intra-SN subsequent CPC configured by the SN may be the first information. 1. In response to performing a PSCell change, the UE deletes or retains the stored configuration for subsequent CPC associated with the SN, where the configuration for subsequent CPC associated with the SN is the configuration of SN initiated intra-SN subsequent CPC without MN involvement. 1.1. In response to performing the first PSCell change, the UE deletes the stored configuration associated with the SN for the subsequent CPC. 1.2. In response to performing the second PSCell change, the UE retains the stored configuration associated with the SN for the subsequent CPC. 2. Based on 1, in response to performing a PSCell change, the UE deletes or retains the stored configuration associated with the SN for the subsequent CPC, including: 2.1. In response to the UE successfully accessing the target PSCell (new PSCell / candidate PSCell), the UE deletes or retains the stored configuration associated with the SN for subsequent CPC. Exemplarily, the UE successfully accessing the target PSCell may successfully complete random access for the UE: If reconfigurationWithSync was included in spCellConfig of an SCG and when MAC of an NR cell group successfully completes a Random Access procedure; 3. The first PSCell change in 1 is an inter-SN PSCell change and / or the second PSCell change in 1 is an intra-SN PSCell change. 4. Based on any of 1 and 3, the PSCell change includes one or more of the following situations: 4.1. The UE receives a cell change command for PSCell change sent by the MN or SN, and executes the PSCell change. 4.1.1. The cell change command may be an RRCReconfiguration message for PSCell change that includes reconfiguration with sync corresponding to the PSCell. 4.1.2. The cell change command sent by the SN for PSCell change is an intra-SN PSCell change without MN involvement initiated by the SN. Exemplarily, the cell change command for PSCell change sent by the MN may be included in the handover command. 4.2. The UE triggers corresponding mobility operations based on the mobility configuration pre-configured by the MN and performs PSCell change. 4.2.1, where the mobility operation can be: 4.2.1.1, MN initiated inter-SN subsequent CPC 4.2.1.2, SN initiated inter-SN subsequent CPC 4.2.1.3, MN initiated inter-SN CPC 4.2.1.4, SN initiated inter-SN CPC 4.2.1.5、SN initiated intra-SN CPC without MN involvement 4.2.1.6, SN initiated intra-SN subsequent CPC without MN involvement 4.2.1.7、CHO with / without SN change 5. The second PSCell change may be one or more of the following mobility operations: 5.1. SN-initiated intra-SN PSCell change without MN involvement 5.2. SN initiated intra-SN CPC without MN involvement 5.3. SN initiated intra-SN subsequent CPC without MN involvement 5.4. For PSCell change initiated by MN, but the target PSCell and the source PSCell belong to the same SN. 5.5. For CHO without SN change initiated by MN, that is, after CHO is executed, the target PSCell and the source PSCell belong to the same SN. 5.6. For MN / SN initiated inter-SN (subsequent) CPC, if the target PSCell and the source PSCell before and after the execution belong to the same SN. 6. The first PSCell change may be one or more of the following mobility operations: 6.1. PSCell change initiated by MN. 6.1.1. For example: the target PSCell and the source PSCell belong to different SNs. 6.2. For CHO initiated by MN. 6.2.1. For example, this CHO is CHO with SN change, that is, after executing CHO, the target PSCell and the source PSCell belong to different SNs. 6.3. For MN / SN initiated inter-SN (subsequent) CPC (configured through MCG VarConditionalConfig. 6.3.1. For example: the target PSCell and the source PSCell before and after the execution belong to the same SN. 7. Based on 4, how to determine whether the mobility operation in 6.1; 6.2; 6.3 is the first PSCell change (inter-SN change), that is, whether it triggers the UE to delete the stored configuration associated with the SN for subsequent CPC 7.1. By default, all mobility operations mentioned in 6 trigger the UE to delete the stored configuration associated with the SN for subsequent CPC. 7.2. Determine based on network configuration whether the first PSCell change triggers the UE to delete the stored configuration associated with the SN for subsequent CPC 7.2.1. The MN may directly indicate in the above mobility configuration (or command). 7.2.2. For the MN / SN initiated inter-SN (subsequent) CPC configured by the MN or the PSCell change command initiated by the MN, if the cell set ID (or Group ID) contained in the configuration is the same as the cell set ID corresponding to the current serving PSCell (the same Cell set ID indicates intra-SN change), the UE retains the subsequent CPAC configured by the SN; otherwise, the UE deletes the subsequent CPA configured by the SN (i.e., clears the SCG VarConditionalConfig). 8. The configuration of SN initiated intra-SN subsequent CPC is deleted, that is, the configuration for subsequent CPC in SCG VarConditionalReconfig of the UE is deleted. 8.1. Exemplarily, the configuration for subsequent CPC in the SCG VarConditionalReconfig of the UE refers to the entries in the condReconfigList within the SCG VarConditionalReconfig in which subsequentCondReconfig is included, the reference configuration for SN initiated intra-SN subsequent CPC, and one or more of the configurations related to SK-Counter. 9. Based on 7, no matter whether the first PSCell change or the second PSCell change is performed, the UE always needs to delete the CPC configuration that does not support subsequent CPC. Therefore, after performing the first mobility, the UE clears SCG VarConditionalReconfig, that is, deletes all entries in SCG VarConditionalReconfig. 10. Regarding retaining the configuration of SN initiated intra-SN subsequent CPC, that is, after performing the second PSCell change, the UE retains the stored configuration associated with the SN for subsequent CPC, that is, the UE removes all the entries in the condReconfigList within the SCG VarConditionalReconfig except for the entries in which subsequentCondReconfig is present. 11. Based on 8-9, after deleting the relevant CPC or subsequent CPC configuration in SCG VarConditionalReconfig, the UE also needs to delete the measurement configuration corresponding to the measurement identifier corresponding to the execution conditions contained in these configurations. In some embodiments: 1>, if reconfigurationWithSync was included in spCellConfig of an MCG or SCG and when MAC of an NR cell group successfully completes a Random Access procedure triggered above; or (or) ...(unused,skip) 2>, if the reconfigurationWithSync was included in spCellConfig of an MCG; or (or) 2>, if the reconfigurationWithSync was included in spCellConfig of an SCG and the CPA or CPC was configured: 3>, remove all the entries in the condReconfigList within the MCG and the SCG VarConditionalReconfig except for the entries in which subsequentCondReconfig is present, if any; 3>, delete all entries in VarConditionalReconfiguration specified in TS 36.331

[0010] Section 5.3.5.9.6 (if any) (remove all the entries within VarConditionalReconfiguration as specified in TS 36.331

[0010] ,clause 5.3.5.9.6,if any); 3> if the RRCReconfiguration included in condRRCReconfig within the MCG VarConditionalReconfig; 4>, delete all the entries within the SCG VarConditionalReconfig, if any (all the entries in the condReconfigList and the reference configuration within the SCG VarConditionalReconfig); 1>, if reconfigurationWithSync was included in spCellConfig of an MCG or SCG and when MAC of an NR cell group successfully completes a Random Access procedure triggered above; or (or), ...(unused,skip) 2>, if the reconfigurationWithSync was included in spCellConfig of an MCG; or (or); 2>, if the reconfigurationWithSync was included in spCellConfig of an SCG and the CPA or CPC was configured: 3>, remove all the entries in the condReconfigList within the MCG and the SCG VarConditionalReconfig except for the entries in which subsequentCondReconfig is present, if any; 3>, remove all the entries within VarConditionalReconfiguration as specified in TS 36.331

[0010] , clause 5.3.5.9.6, if any; 3> if the RRCReconfiguration included in condRRCReconfig within the SCG VarConditionalReconfig; 4>, remove all the entries in the condReconfigList within the SCG VarConditionalReconfig except for the entries in which subsequentCondReconfig is present, if any; 3>Others(else): 4> remove all the entries within the SCG VarConditionalReconfig, if any (all the entries in the condReconfigList and the reference configuration within the SCG VarConditionalReconfig); In some embodiments, when an SN change occurs, the UE suspends the configuration of the SN initiated intra-SN subsequent CPC configured by the SN, and when the UE subsequently accesses the corresponding SN, these configurations are enabled based on the indication of the SN. 1-11 is similar to 1-11 of invention point 1, except that the deletion in invention point 1 is replaced with suspension, and the retention in invention point 1 is not suspended. 12. Suspend: retain the corresponding configurations for the UE, but stop (or do not start) one or more of the following steps: 12.1. Do not initiate the measurement of the measurement identifier corresponding to the execution condition of the pending SN initiated intra-SN subsequent CPC. 12.2. The execution conditions of the pending SN initiated intra-SN subsequent CPC configurations shall not be evaluated. 12.3. The mobility operation corresponding to the pending SN initiated intra-SN subsequent CPC configuration is not executed. 13. The UE receives indication information sent by the SN / MN, where the indication information is used to instruct the UE to enable the configuration of the suspended SN initiated intra-SN subsequent CPC. In response to the UE receiving the indication information, the UE enables the configuration of the suspended SN initiated intra-SN subsequent CPC, including: 13.1. Initiate the measurement of the measurement identifier corresponding to the execution conditions of the SN initiated intra-SN subsequent CPC. 13.2. Evaluate the execution conditions of the enabled SN initiated intra-SN subsequent CPC configuration. 13.3. Perform the mobility operations corresponding to the enabled SN initiated intra-SN subsequent CPC configuration. 14. Since each SN accessed by the UE can configure a set of SN initiated intra-SN subsequent CPC configurations for the UE, each SN provides an index when configuring the SN initiated intra-SN subsequent CPC. This index is allocated by the MN to the SN. The UE stores a set of pending SN initiated intra-SN subsequent CPC configurations for each SN index. The indication information in 13 includes this index, which is used to inform the UE which set of SN initiated intra-SN subsequent CPC configurations to activate. 15. The UE may also delete one or more groups of pending SN initiated intra-SN subsequent CPC configurations stored in the UE based on the index sent by the MN or SN. In some embodiments, when an MN-triggered SN change occurs, a non-UE-conditionally triggered CPC, a subsequent CPC, in which the UE autonomously triggers mobility based on the execution conditions configured by the network is processed according to the above two embodiments, that is, before the MN sends an SN change message to the UE, after receiving the SN Release request message sent by the MN, the SN sends information to the UE, deletes the SN initiated intra-SN subsequent CPC configuration configured for the UE and the corresponding measurement configuration, and then replies with an SN release confirmation (release Ack) message to the UE. FIG6a is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6a, the terminal 6100 may include: a processing module 6101. In some embodiments, the processing module 6101 is used to perform an operation on the first information in response to the terminal performing a primary and secondary cell change, where the first information is information associated with the SN and used for a first mobility operation. In some embodiments, 6100 may include a transceiver module 6102, and the transceiver module 6102 is used to perform the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods. In some embodiments, the first information includes at least one of the following: information based on the SN and sent to the terminal via the wireless signaling bearer SRB3 for the first mobility operation; information based on the SN and sent to the terminal via the master node for the first mobility operation. In some embodiments, the first mobility operation includes at least one of the following: a subsequent conditional primary and secondary cell addition or change (subsequent CPAC); a layer 1 and layer 2 triggered mobility LTM. In some embodiments, the operation includes at least one of the following: deleting the first information; retaining the first information; suspending the first information; not suspending the first information; and restoring the first information. In some embodiments, the primary and secondary cell change includes a first primary and secondary cell change, the operation includes deleting first information, or the operation includes suspending first information; the first primary and secondary cell change is a primary and secondary cell change between SNs. In some embodiments, the processing module 6101 uses at least one of the following methods to determine whether to perform an operation on the first information: in response to a change in the first primary and secondary cells, the operation on the first information is performed by default; in response to a change in the first primary and secondary cells and receiving second information sent by the network device, the operation on the first information is performed; the second information includes an instruction that displays an instruction to perform the operation on the first information, or the second information includes an instruction that implicitly indicates the execution of the operation on the first information. In some embodiments, the processing module 6101 performs an operation on the first information in the following manner: deleting or suspending a first variable stored in the terminal, where the first variable is a variable of the secondary cell group and is used to store the first information. In some embodiments, the processing module 6101 is further used to: delete other information different from the first information in a first variable stored by the terminal, where the first variable is a variable of the secondary cell group and is used to store the first information. In some embodiments, the processing module 6101 is further used to: delete a measurement configuration, where the measurement configuration corresponds to a measurement identifier, and the measurement identifier is a measurement identifier of an execution condition corresponding to the first variable. In some embodiments, the operation includes suspending the first information, and the processing module 6101 is also used to stop executing at least one of the following: measuring a measurement identifier corresponding to a measurement execution condition, the execution condition being the execution condition of the suspended first information; evaluating the execution condition of the suspended mobility configuration information; executing a first mobility operation, the first mobility operation being the first mobility operation corresponding to the suspended first information. In some embodiments, the processing module 6101 is further used to: enable the suspended first information in response to receiving third information sent by the network device; the third information is used to indicate enabling the first information. In some embodiments, the terminal corresponds to one or more first information groups, the first information groups correspond to indexes, and the third information is used to indicate the index corresponding to the enabled first information. In some embodiments, the primary and secondary cell change includes a second primary and secondary cell change, the operation includes retaining the first information, or the operation includes not suspending the first information; the second primary and secondary cell change is a primary and secondary cell change within the SN. In some embodiments, before performing an operation on the first information, the processing module 6101 is further used to: determine that the terminal successfully accesses the target primary and secondary cells, and the target primary and secondary cells are the newly accessed primary and secondary cells after the primary and secondary cells are changed, or the candidate cells. In some embodiments, the processing module 6101 is also used to determine whether to execute the change of primary and secondary cells in at least one of the following ways: receiving fourth information sent by the master node or SN, and the fourth information is used to configure the change of primary and secondary cells; based on fifth information pre-configured by the master node, a second mobility operation is performed, and the fifth information is used for mobility configuration. Figure 6b is a schematic diagram of the structure of the network device proposed in the embodiment of the present disclosure. As shown in Figure 6b, the network device 6200 may include: a transceiver module 6201. The above-mentioned transceiver module 6201 is used to send the second information to the terminal, so that the terminal responds to the change of the first primary and secondary cells and receives the second information, and performs an operation on the first information, the first information is the first information associated with the SN, and the first information is used for the first mobility operation; the second information includes an instruction to display an instruction to perform an operation on the first information, or the second information includes an instruction to implicitly indicate the execution of an operation on the first information. Optionally, the above-mentioned transceiver module is used to execute the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods, which will not be repeated here. In some embodiments, the transceiver module 6201 is further used to: send third information to the terminal, where the third information is used to instruct the terminal to enable the first information. In some embodiments, the terminal corresponds to one or more first information groups, the first information groups correspond to indexes, and the third information is used to indicate the index corresponding to the enabled first information. In some embodiments, the transceiver module 6201 is further used for at least one of the following: sending fourth information to the terminal, the fourth information being used to configure the change Primary and secondary cells; pre-configuring fifth information to the terminal, the fifth information is used for mobility configuration. FIG7a is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. The communication device 7100 may be a network device, or a terminal, or a chip, a chip system, or a processor that supports the network device to implement any of the above methods, or a chip, a chip system, or a processor that supports the terminal to implement any of the above methods. Optionally, the network device may be an access network device, a core network device, or the like. Optionally, the terminal may be a user device, or the like. The communication device 7100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment. As shown in FIG. 7a , the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device, execute the program, and process the data of the program. The communication device 7100 is used to perform any of the above methods. Optionally, the communication device may be a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc. In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memory 7102 may also be outside the communication device 7100. In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs the communication steps S2101 such as sending and / or receiving in the above method, and the processor 7101 performs other steps. In some embodiments, the transceiver may include a receiver and / or a transmitter, and the receiver and the transmitter may be separate or integrated. Optionally, the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other. In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7102, and the interface circuit 7104 may be used to receive signals from the memory 7102 or other devices, and may be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101. The communication device 7100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc. Fig. 7b is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. In the case where the communication device 7100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 7200 shown in Fig. 7b, but the present invention is not limited thereto. The chip 7200 includes one or more processors 7201, and the chip 7200 is used to execute any of the above methods. In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected to the memory 7203. The interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and the interface circuit 7202 can be used to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201. In some embodiments, the interface circuit 7202 executes the communication step S2101 such as sending and / or receiving in the above method, and the processor 7201 executes other steps. In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably. In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Optionally, all or part of the memory 7203 may be outside the chip 7200. The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium. The present disclosure also proposes a program product, which, when executed by the communication device 7100, enables the communication device 7100 to execute any of the above methods. Optionally, the program product is a computer program product. The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Claims

1. A communication method, characterized in that: The method comprises: In response to the terminal executing a primary / secondary cell change, an operation on first information is performed, where the first information is information associated with the secondary node SN and used for a first mobility operation.

2. The method according to claim 1, characterized in that The first information is: Information represented or transmitted in SN format.

3. The method according to any one of claims 1 to 2, characterized in that: The first information includes at least one of the following: Information for a first mobility operation, based on the SN and sent to the terminal through a radio signaling bearer SRB3; Information used for the first mobility operation based on the SN and transparently transmitted to the terminal through the master node MN.

4. The method according to any one of claims 1 to 3, characterized in that: The first mobility operation includes at least one of the following: Subsequent conditional primary and secondary cells add or change subsequent CPAC; Layer 1 and Layer 2 triggered mobility LTM.

5. The method according to any one of claims 1 to 4, characterized in that: The performing of the operation on the first information includes at least one of the following: deleting the first information; retaining the first information; suspending the first information; not suspending the first information; The first information is restored.

6. The method according to claim 5, characterized in that The primary and secondary cell change includes a first primary and secondary cell change, the operation includes deleting the first information, or the operation includes suspending the first information; The first primary and secondary cell change is a primary and secondary cell change between SNs.

7. The method according to claim 6, characterized in that At least one of the following methods is used to determine whether to perform an operation on the first information: In response to the occurrence of the first primary and secondary cell change, performing an operation on the first information by default; In response to the occurrence of the first primary and secondary cell change and the receipt of second information sent by the network device, performing an operation on the first information; The second information includes an instruction that explicitly instructs to perform an operation on the first information, or the second information includes an instruction that implicitly instructs to perform an operation on the first information.

8. The method according to claim 6 or 7, characterized in that: Performing an operation on the first information includes: The first variable stored in the terminal is deleted or suspended, where the first variable is a variable of the secondary cell group and is used to store the first information.

9. The method according to any one of claims 6 to 8, characterized in that The method further comprises: Delete other information different from the first information in a first variable stored by the terminal, where the first variable is a variable of a secondary cell group and is used to store the first information.

10. The method according to claim 8 or 9, characterized in that: The method further comprises: A measurement configuration is deleted, where the measurement configuration corresponds to a measurement identifier, and the measurement identifier is a measurement identifier of an execution condition corresponding to the first variable.

11. The method according to any one of claims 5 to 10, characterized in that The operation includes suspending the first information, and the method further includes stopping execution of at least one of the following: a measurement identifier corresponding to a measurement execution condition, where the execution condition is an execution condition of the suspended first information; evaluating execution conditions of pending mobility configuration information; A first mobility operation is performed, where the first mobility operation is a first mobility operation corresponding to the suspended first information.

12. The method according to any one of claims 5 to 11, characterized in that The method further comprises: In response to receiving third information sent by the network device, enabling the suspended first information; The third information is used to indicate enabling of the first information.

13. The method according to claim 12, characterized in that The terminal corresponds to one or more first information groups, the first information groups correspond to indexes, and the third information is used to indicate the index corresponding to the enabled first information.

14. The method according to claim 5, characterized in that The primary and secondary cell change includes a second primary and secondary cell change, the operation includes retaining the first information, or the operation includes not suspending the first information; The second primary and secondary cell change is a primary and secondary cell change within the SN.

15. The method according to any one of claims 5 to 14, characterized in that Before performing the operation on the first information, the method further includes: It is determined that the terminal successfully accesses the target primary and secondary cell, where the target primary and secondary cell is a primary and secondary cell newly accessed after the primary and secondary cell is changed, or a candidate cell.

16. The method according to any one of claims 5 to 15, characterized in that At least one of the following methods is used to determine whether to change the primary and secondary cells: receiving fourth information sent by the MN or the SN, where the fourth information is used to configure a change in the primary and secondary cells; Based on fifth information preconfigured by the MN, a second mobility operation is performed, where the fifth information is used for mobility configuration.

17. A communication method, characterized in that: The method comprises: Sending second information to the terminal, so that the terminal performs an operation on the first information in response to the occurrence of the first primary and secondary cell change and receiving the second information, where the first information is information associated with the secondary node SN and used for the first mobility operation; The second information includes an instruction that explicitly instructs to perform an operation on the first information, or the second information includes an instruction that implicitly instructs to perform an operation on the first information.

18. The method according to claim 17, characterized in that The method further comprises: Sending third information to a terminal, where the third information is used to instruct the terminal to enable the first information.

19. The method according to claim 18, characterized in that The terminal corresponds to one or more first information groups, the first information groups correspond to indexes, and the third information is used to indicate the index corresponding to the enabled first information.

20. The method according to any one of claims 17 to 19, characterized in that: The method further comprises at least one of the following: Sending fourth information to the terminal, where the fourth information is used to configure a change in the primary and secondary cells; The terminal is preconfigured with fifth information, where the fifth information is used for mobility configuration.

21. A communication method, characterized in that: The method comprises: The network device sends second information to the terminal, where the second information includes an instruction that explicitly indicates to execute an operation on the first information, or the second information includes an instruction that implicitly indicates to execute an operation on the first information; In response to the occurrence of the first primary / secondary cell change and the receipt of the second information, the terminal performs an operation on first information, where the first information is information associated with the secondary node SN and used for a first mobility operation.

22. A terminal, characterized in that: include: The processing module is used to perform an operation on first information in response to the terminal performing a primary and secondary cell change, where the first information is information associated with the SN and used for a first mobility operation.

23. A network device, characterized in that: include: a transceiver module, configured to send second information to the terminal, so that the terminal responds to the change of the first primary and secondary cells and receives the second information, and performs an operation on the first information, wherein the first information is information associated with the SN and used for the first mobility operation; The second information includes an instruction that explicitly instructs to perform an operation on the first information, or the second information includes an instruction that implicitly instructs to perform an operation on the first information.

24. A terminal, characterized in that: include: one or more processors; The processor is used to execute the communication method described in any one of claims 1 to 16.

25. A network device, characterized in that: include: one or more processors; The processor is used to execute the communication method described in any one of claims 17-20.

26. A communication system, characterized in that: It comprises a terminal and a network device, wherein the terminal is configured to implement the communication method according to any one of claims 1 to 16, and the network device is configured to implement the communication method according to any one of claims 17 to 20.

27. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-16 or 17-20.

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