Condition-based secondary node or primary and secondary cell change method and device

Abstract

The embodiments of the present application relate to a method and device for changing a secondary node or a primary and secondary cell based on conditions, wherein the method includes receiving configuration information for changing a secondary node / primary and secondary cell; changing the secondary node / primary and secondary cell using the configuration information for changing the secondary node / primary and secondary cell; the configuration information for changing the secondary node / primary and secondary cell includes at least one of the following: configuration information for adding conditions of a candidate secondary node / primary and secondary cell; configuration information of a candidate secondary node / primary and secondary cell; and configuration information for releasing conditions of a source secondary node / primary and secondary cell. The embodiments of the present application can implement conditional addition of a secondary node or change of a primary and secondary cell.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a method and device for changing a secondary node or a primary and secondary cell based on conditions. Background Art

[0002] Currently, the Secondary Node (SN) change process can be triggered by either the Master Node (MN) or the SN. In the R16 mobility enhancement project, condition-based handover and condition-based intra-SN PSCell change are proposed.

[0003] Condition-based handover is the process of configuring the current cell to trigger the handover, and providing the target cell and its corresponding configuration information to the UE. When the UE measurement result meets the handover triggering condition, a handover to the pre-configured cell is triggered.

[0004] Condition-based handover is the triggering condition for handover from the current cell to the UE configuration, as well as the target cell corresponding to the triggering condition and its corresponding configuration information. When the UE measurement results meet the handover triggering condition, handover to the pre-configured cell is triggered.

[0005] Currently, there is no conditional inter-SN PSCell change procedure. Summary of the Invention

[0006] The embodiments of the present application provide a method and device for changing a secondary node or a primary and secondary cell based on a condition, which can implement a secondary node change or a primary and secondary cell change based on a condition.

[0007] The present application provides a condition-based method for changing a secondary node or a primary or secondary cell, which is applied to a terminal device. The method includes:

[0008] Receiving configuration information for changing the secondary node / primary and secondary cells;

[0009] Using the configuration information for changing the secondary node / primary and secondary cells, changing the secondary node / primary and secondary cells;

[0010] The configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0011] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0012] Configuration information of candidate secondary nodes / primary and secondary cells;

[0013] Release condition configuration information of the source secondary node / primary and secondary cells.

[0014] The present application also provides a condition-based method for changing a secondary node or a primary and secondary cell, which is applied to a primary node. The method includes:

[0015] Sending configuration information for changing the secondary node / primary and secondary cells to the terminal device, where the configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0016] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0017] Configuration information of candidate secondary nodes / primary and secondary cells;

[0018] Release condition configuration information of the source secondary node / primary and secondary cells.

[0019] This embodiment of the present application proposes a condition-based method for changing a secondary node or a primary and secondary cell, which is applied to a candidate secondary node. The method includes:

[0020] Sending configuration information for changing the secondary node / primary and secondary cells to the primary node, where the configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0021] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0022] Configuration information of candidate secondary nodes / primary and secondary cells.

[0023] This embodiment of the present application provides a condition-based method for changing a secondary node or a primary / secondary cell, which is applied to a source secondary node. The method includes:

[0024] Sending configuration information for changing the secondary node / primary and secondary cells to the primary node, where the configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0025] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0026] Release condition configuration information of the source secondary node / primary and secondary cells.

[0027] The present application provides a terminal device, including:

[0028] A first receiving module is configured to receive configuration information for changing a secondary node / primary and secondary cells;

[0029] a changing module, configured to change the secondary node / primary and secondary cells by using the configuration information for changing the secondary node / primary and secondary cells;

[0030] The configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0031] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0032] Configuration information of candidate secondary nodes / primary and secondary cells;

[0033] Release condition configuration information of the source secondary node / primary and secondary cells.

[0034] The present application provides a network device, including:

[0035] The second sending module is configured to send configuration information for changing the secondary node / primary and secondary cells to the terminal device, where the configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0036] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0037] Configuration information of candidate secondary nodes / primary and secondary cells;

[0038] Release condition configuration information of the source secondary node / primary and secondary cells.

[0039] The present application provides a network device, including:

[0040] The third sending module is configured to send configuration information for changing the secondary node / primary and secondary cells to the primary node, where the configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0041] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0042] Configuration information of candidate secondary nodes / primary and secondary cells.

[0043] The present application provides a network device, including:

[0044] The fourth sending module is configured to send configuration information for changing the secondary node / primary and secondary cells to the primary node, where the configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0045] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0046] Release condition configuration information of the source secondary node / primary and secondary cells.

[0047] The embodiments of the present application can implement condition-based addition of secondary nodes or addition of primary and secondary cells, so that the secondary node or primary and secondary cell addition process can be completed promptly and effectively, thereby achieving effective load distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is an illustration of the application scenario of the embodiment of the present application. Figure 1 .

[0049] Figure 2This is an illustration of the application scenario of the embodiment of the present application. Figure 2 .

[0050] Figure 3 This is a flowchart of a conditional SN / PSCell change method 300 according to an embodiment of the present application.

[0051] Figure 4 This is an implementation flow chart of Example 1 of the present application.

[0052] Figure 5 This is the implementation flow chart of Example 2 of this application.

[0053] Figure 6 This is the implementation flow chart of Example 3 of this application.

[0054] Figure 7 This is the implementation flow chart of Example 4 of the present application.

[0055] Figure 8 This is the implementation flow chart of Example 5 of the present application.

[0056] Figure 9 This is a flowchart of a conditional SN / PSCell change method 900 according to an embodiment of the present application.

[0057] Figure 10 This is a flowchart of a conditional SN / PSCell change method 1000 according to an embodiment of the present application.

[0058] Figure 11 This is a flowchart of a conditional SN / PSCell change method 1100 according to an embodiment of the present application.

[0059] Figure 12 It is a structural diagram of a terminal device 1200 according to an embodiment of the present application.

[0060] Figure 13 It is a structural diagram of a terminal device 1300 according to an embodiment of the present application.

[0061] Figure 14 14 is a schematic diagram of the structure of a network device 1400 according to an embodiment of the present application.

[0062] Figure 15 15 is a schematic diagram of the structure of a network device 1500 according to an embodiment of the present application.

[0063] Figure 16 16 is a schematic diagram of the structure of a network device 1600 according to an embodiment of the present application.

[0064] Figure 17 is a schematic structural diagram of a communication device 1700 according to an embodiment of the present application;

[0065] Figure 18 is a schematic structural diagram of chip 1800 according to an embodiment of the present application. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0067] It should be noted that the terms "first," "second," and the like in the description and claims of the embodiments of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. The objects described by the terms "first" and "second" may be the same or different.

[0068] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) system or other communication systems.

[0069] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0070] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0071] The embodiments of the present application are not limited to the spectrum to which they are applied. For example, the embodiments of the present application can be applied to both licensed and unlicensed spectrum.

[0072] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc. The terminal device may be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a next-generation communication system, such as a terminal device in a NR network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network.

[0073] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0074] A network device may be a device used to communicate with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, etc.

[0075] In an embodiment of the present application, a network device provides services for a cell, and a terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell may be a cell corresponding to a network device (for example, a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, picocells, femtocells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0076] Figure 1The exemplary embodiment shows one network device 110 and two terminal devices 120. Optionally, the wireless communication system 100 may include multiple network devices 110, and each network device 110 may include another number of terminal devices 120 within its coverage area. This embodiment of the present application is not limited thereto. The embodiment of the present application can be applied to one terminal device 120 and one network device 110, or to one terminal device 120 and another terminal device 120.

[0077] Optionally, the wireless communication system 100 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), which is not limited in the embodiments of the present application.

[0078] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0079] The embodiment of the present application proposes a condition-based secondary node or primary secondary cell (SN / PSCell) change method, which is applied to a dual connectivity (DC) network including a UE, a master cell group (MCG) and a secondary cell group (SCG). Figure 2 An MCG and an SCG are shown as an example. MCG can be simply understood as the cell group where the cell (Cell) where the UE initiates random access for the first time is located. Under the MCG, there may be many cells, one of which is used to initiate initial access, called the primary cell (PCell, Primary Cell). The PCell under the MCG and the secondary cell (SCell, Secondary Cell) under the MCG are combined through carrier aggregation (CA, Carrier aggregation) technology. The UE accesses each cell in the MCG through the master node (MN). Similarly, there will also be a most important cell under the SCG, which is the PSCell, which can also be simply understood as the cell that initiates initial access under the SCG. The PSCell under the SCG and the SCell under the SCG are also combined through CA technology. The UE accesses each cell in the SCG through the secondary node (SN).

[0080] Figure 3 This is a flowchart of a condition-based SN / PSCell change method 300 according to an embodiment of the present application. The method can optionally be applied to Figure 1 and Figure 2 The system shown in FIG. 1 is not limited thereto. The method can be applied to a UE. The method includes at least part of the following contents.

[0081] S310: Receive configuration information for changing SN / PSCell;

[0082] S320: Using the configuration information for changing the SN / PSCell, change the SN / PSCell;

[0083] The configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0084] Addition condition configuration information of candidate secondary nodes / primary and secondary cells;

[0085] Configuration information of candidate secondary nodes / primary and secondary cells;

[0086] Release condition configuration information of the source secondary node / primary and secondary cells.

[0087] Optionally, the above-mentioned candidate SN / PSCell addition condition configuration information includes:

[0088] Additional condition configuration information configured for each candidate SN / PSCell; and / or,

[0089] The same added condition configuration information is configured for all candidate SN / PSCells.

[0090] The above-mentioned candidate SN / PSCell addition condition configuration information can be determined by the MN based on the UE's measurement results and sent by the MN to the UE. Alternatively, the MN sends the UE's measurement results to each candidate SN, and each candidate SN determines the candidate SN / PSCell addition condition configuration information based on the UE's measurement results and sends it to the UE via the MN.

[0091] The release condition configuration information of the source SN / PSCell may be determined by the MN based on the UE's measurement results and sent by the MN to the UE. Alternatively, the MN sends the UE's measurement results to the source SN, and the source SN determines the release condition configuration information of the source SN / PSCell based on the UE's measurement results and sends it to the UE via the MN.

[0092] Optionally, the configuration information of the candidate SN / PSCell has at least the following two forms:

[0093] First, the configuration information of the candidate SN / PSCell includes at least one of the following:

[0094] Configuration information of the PSCell in the candidate SN;

[0095] Configuration information of at least one SCell in the candidate SN;

[0096] Configuration information of the addition conditions of at least one SCell in the candidate SN.

[0097] Second, the configuration information of the candidate SN / PSCell includes at least one of the following:

[0098] Configuration information of at least one PSCell in the candidate SN and corresponding PSCell condition configuration information (corresponding PSCell condition);

[0099] Configuration information of the default PSCell in the candidate SN;

[0100] Configuration information of at least one SCell in the candidate SN;

[0101] Configuration information of the addition conditions of at least one SCell in the candidate SN.

[0102] The difference between the above two forms is that in the first form, the configuration information of the candidate SN / PSCell has already determined which cell in the candidate SN is the PSCell. In the second form, the configuration information of the candidate SN / PSCell provides the conditions for each cell in the candidate SN to become a PSCell (such as the corresponding PSCell condition configuration information mentioned above), and provides a default PSCell. After receiving the configuration information of the candidate SN / PSCell, the UE determines whether each cell in the target SN to be changed meets the conditions for becoming a PSCell, and determines the cell that meets the conditions as the PSCell; if each cell does not meet the conditions for becoming a PSCell, the above default PSCell is selected as the PSCell.

[0103] The configuration information of the candidate SN / PSCells may be determined by each candidate SN / PSCell according to the measurement result of the UE and sent to the UE via the MN.

[0104] In some implementations, before step S310, the following steps may also be performed:

[0105] The measurement results of the terminal device are sent to the master node, and the measurement results are used to generate the above-mentioned configuration information for changing the SN / PSCell.

[0106] The configuration information for changing the SN / PSCell may further include at least one of the following:

[0107] SCG counter (counter);

[0108] The identifier (ID) of at least one candidate SN / PSCell.

[0109] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information includes at least the following situations:

[0110] If the original configuration before the change is Next Generation Evolved Universal Radio Access (E-UTRA) and New Radio Access (NR) Dual Connectivity (NGEN-DC), E-UTRA and NR Dual Connectivity (EN-DC), or NR and E-UTRA Dual Connectivity (NE-DC), and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event;

[0111] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0112] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0113] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event.

[0114] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information may be related to the entity that configures the condition, for example:

[0115] If the adding condition configuration information of the candidate SN / PSCell is configured by the candidate SN / PSCell, the adding condition configuration information of the candidate SN / PSCell is based on events A3 and B5.

[0116] In some implementations, the release condition configuration information of the source SN / PSCell includes at least the following:

[0117] If the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the above-mentioned source SN / PSCell is determined based on the measurement results of the serving cell.

[0118] In some implementations, the above-mentioned change of SN / PSCell configuration information includes at least the following situations:

[0119] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above-mentioned changed SN / PSCell configuration information is based on the B1 event;

[0120] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed SN / PSCell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0121] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed SN / PSCell is based on the B1 event.

[0122] The meanings of the above events are as follows:

[0123] An A1 event indicates that a serving cell measurement value (such as a reference signal received power (RSRP) or a reference signal received quality (RSRQ)) is greater than a threshold.

[0124] A2 event indicates that the serving cell measurement value (such as RSRP or RSRQ) is less than the threshold.

[0125] A3 event indicates that the neighboring cell measurement value is better than the serving cell measurement value by a certain threshold.

[0126] A4 event indicates that the neighboring cell measurement value is greater than the threshold.

[0127] Event A5 indicates that the serving cell measurement value is less than threshold 1, while the neighboring cell channel quality is greater than threshold 2.

[0128] A6 event indicates that the signal quality of the neighboring cell is better than a certain threshold of the Scell.

[0129] The B1 event indicates that the channel quality of the neighboring cell with different technology is greater than the threshold.

[0130] The B2 event indicates that the channel quality of the serving cell is less than threshold 1, while the channel quality of the neighboring cell with different technology is greater than threshold 2.

[0131] Optionally, the above step S320 may include:

[0132] Initiate a random access procedure to the candidate SN / PSCell corresponding to the candidate SN / PSCell addition condition configuration information when the current conditions satisfy the candidate SN / PSCell addition condition configuration information and the source SN / PSCell release condition configuration information; or

[0133] Initiate a random access procedure to the candidate SN / PSCell corresponding to the candidate SN / PSCell addition condition configuration information when the current condition satisfies the candidate SN / PSCell addition condition configuration information but does not satisfy the source SN / PSCell release condition configuration information; or

[0134] When the current conditions meet the adding condition configuration information of the candidate SN / PSCell but do not meet the releasing condition configuration information of the source SN / PSCell, it is decided whether to initiate a random access process to the candidate SN / PSCell corresponding to the adding condition configuration information of the candidate SN / PSCell according to the pre-set processing method.

[0135] Specifically, the UE may initiate a random access process to the target SN / PSCell (i.e., the candidate SN / PSCell determined to be changed), and the target SN notifies the MN to trigger data forwarding, activate the GPRS Tunnelling Protocol (GTP) tunnel, and / or establish a GTP tunnel. Data forwarding may include the source SN forwarding data to the MN, the MN forwarding data to the target SN, and / or the UPF sending data to the target SN. GTP tunnel activation may include GTP tunnel activation from the source SN to the MN, GTP tunnel activation from the MN to the target SN, and / or GTP tunnel activation from the UPF to the target SN. Establishing a GTP tunnel may include establishing a GTP tunnel from the source SN to the MN, a GTP tunnel from the MN to the target SN, and / or a GTP tunnel from the UPF to the target SN. The tunnel establishment, activation, and data forwarding processes will be described in detail in the following embodiments.

[0136] The above describes a conditional SN / PSCell change method for a UE, as proposed in an embodiment of the present application. The UE performs a conditional SN change or PSCell change based on received configuration information for changing the SN / PSCell. The configuration information for changing the SN / PSCell is calculated by the mobile node or the mobile station based on measurement results reported by the UE, and the calculation results are sent to the UE. The following describes the interaction between the various entities using specific embodiments.

[0137] Example 1:

[0138] In this embodiment, the MN initiates the conditional SN / PSCell change process. The MN generates candidate SN / PSCell addition condition configuration information and / or source secondary node / primary secondary cell release condition configuration information. The SN then provides the candidate SN / PSCell configuration information based on the candidate SN / PSCell addition condition configuration information. The MN then sends the candidate SN / PSCell addition condition configuration information, source secondary node / primary secondary cell release condition configuration information, and / or candidate SN / PSCell configuration information to the UE.

[0139] Figure 4 This is a flowchart of the implementation of Example 1 of this application. Figure 4 As shown, the following steps are included:

[0140] Step 1: MR-DC is configured between the UE, MN and source SN. The UE reports its measurement results to the MN.

[0141] Step 2: The MN determines the appropriate candidate SN / PSCell set based on the UE's measurement results and generates configuration information for adding the candidate SN / PSCell. The configuration information for adding the candidate SN / PSCell is set for each candidate SN / PSCell or is common to all candidate SN / PSCells.

[0142] Step 3: The MB forwards the measurement results reported by the UE to each candidate SN / PSCell, and / or sends the addition condition configuration information generated in step 2 for the candidate SN / PSCell.

[0143] Optionally, the MN may further send a conditional addition indication to each candidate SN / PSCell, where the indication is used to notify the candidate SN / PSCell to generate configuration information of the candidate SN / PSCell according to the measurement result of the UE.

[0144] Optionally, gNB1 may send at least one candidate SN / PSCell identifier (ID), and / or S-KgNB, and / or a list of SCells in the SN to each candidate SN / PSCell, where S-KgNB is the key of the SN / PSCell.

[0145] Step 4: The MN forwards the UE's measurement results, the source SN's conditional release indication, and / or the source SN's conditional release configuration information to the source SN. This step is optional and is used to notify the source SN of an upcoming conditional SN / PSCell change.

[0146] Step 5: The candidate SN / PSCell sends the SN / PSCell configuration information in the candidate SN to the MN; or,

[0147] Send the configuration information of one or more PSCells and the corresponding PSCell condition configuration information, and / or the default PSCell configuration information to gNB1. The corresponding PSCell condition configuration information may refer to the conditions under which each cell in the SN becomes a PSCell. The default PSCell may refer to the default PSCell in the SN.

[0148] Step 6: The MN sends the candidate SN / PSCell condition configuration information and the corresponding candidate SN / PSCell configuration information to the UE; or,

[0149] The MN sends the conditional configuration information of the candidate SN / PSCell, the configuration information of one or more PSCells and the corresponding PSCell conditional configuration information, and / or the configuration information of the default PSCell to the UE.

[0150] Furthermore, the MN may also send the SCG counter and / or the identifier (ID) of the candidate SN / PSCell to the UE.

[0151] Furthermore, the MN may also send release condition configuration information of the source SN / PSCell to the UE.

[0152] Step 7: When the UE performs measurement, it evaluates whether each candidate SN / PSCell meets the candidate SN / PSCell addition condition configuration information and / or candidate SN / PSCell configuration information. If so, the UE initiates a random access process to the candidate SN / PSCell that meets the conditions (i.e., the target SN / PSCell).

[0153] Alternatively, when the UE performs measurement, it evaluates whether each candidate SN / PSCell satisfies the candidate SN / PSCell's adding condition configuration information and / or candidate SN / PSCell configuration information, and whether the source SN / PSCell satisfies the source SN / PSCell's releasing condition configuration information. If both the adding condition configuration information and the releasing condition configuration information are satisfied, the UE initiates a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell). If the adding condition configuration information is satisfied and the releasing condition configuration information is not satisfied, the UE may initiate a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell), or decide whether to initiate a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell) according to its own settings.

[0154] Optionally, if gNB1 sends the configuration information of the PSCell in the candidate SN to the UE in the above step 6, that is, gNB1 has configured the PSCell in the candidate SN for the UE, then in this step, the UE can initiate a random access process to the PSCell.

[0155] Alternatively, if in the above step 6, the MN sends one or more PSCell configuration information and corresponding PSCell condition configuration information to the UE, that is, the MN has notified the UE of the conditions for each cell in the candidate SN to become a PSCell; then in this step, the UE can determine which cell in the candidate SN that meets the conditions (that is, the target SN) meets the PSCell condition configuration information, and take the cell that meets the PSCell condition configuration information as the PSCell, and initiate a random access process to the PSCell; if none of the current cells meet the corresponding PSCell condition configuration information, the UE initiates a random access process to the default PSCell.

[0156] Example 2:

[0157] In this embodiment, the MN initiates the conditional SN / PSCell change process. The candidate SN / PSCell determines the candidate SN / PSCell addition condition configuration information, provides the candidate SN / PSCell configuration information, and sends it to the UE via the MN. The source SN / PSCell determines the source SN / PSCell addition condition configuration information and sends it to the UE via the MN.

[0158] Figure 5 This is a flowchart of the implementation of the second embodiment of this application. Figure 5 As shown, the following steps are included:

[0159] Step 1: MR-DC is configured between the UE, MN and source SN. The UE reports its measurement results to the MN.

[0160] Step 2: The MN determines an appropriate set of candidate SN / PSCells based on the measurement results. The MN forwards the measurement results reported by the UE to each candidate SN / PSCell. Optionally, the MN may further send a configuration information indication to each candidate SN / PSCell, which notifies the candidate SN / PSCell to generate candidate SN / PSCell addition condition configuration information and / or candidate SN / PSCell configuration information based on the UE's measurement results.

[0161] Step 3: The candidate SN / PSCell generates candidate SN / PSCell addition condition configuration information and / or candidate SN / PSCell configuration information and sends it to the MN.

[0162] Optionally, the candidate SN / PSCell may send at least one of the following to the MN:

[0163] Configuration information of adding conditions for candidate SN / PSCell;

[0164] SN / PSCell configuration information in the candidate SN.

[0165] Alternatively, the candidate SN / PSCell may send at least one of the following to gNB1:

[0166] Configuration information of adding conditions for candidate SN / PSCell;

[0167] Configuration information of one or more PSCells and corresponding PSCell condition configuration information, and / or configuration information of the default PSCell. The corresponding PSCell condition configuration information may refer to the conditions for each cell in the SN to become a PSCell. The default PSCell may refer to the default PSCell in the SN.

[0168] Step 4: After receiving the information sent by the candidate SN / PSCell, the MN sends the S-KgNB to the candidate SN / PSCell. Alternatively, the MN can send the S-KgNB to the candidate SN / PSCell when forwarding the UE's measurement results or sending a configuration information instruction (such as in step 2 above).

[0169] Step 5: The MN forwards the UE's measurement result to the source SN, and / or sends the source SN's conditional release indication to the source SN.

[0170] Step 6: The source SN generates the release condition configuration information of the source SN and sends it to the MN.

[0171] Step 7: The MN sends the candidate SN / PSCell addition condition configuration information and the corresponding SN / PSCell configuration information to the UE; or,

[0172] The MN sends the candidate SN / PSCell addition condition configuration information, as well as the configuration information of one or more PSCells and the corresponding PSCell condition configuration information, and / or the default PSCell configuration information to the UE. The corresponding PSCell condition configuration information may refer to the conditions for each cell in the SN to become a PSCell. The default PSCell may refer to the default PSCell in the SN.

[0173] Furthermore, the MN may send the release condition configuration information of the source SN to the UE.

[0174] Furthermore, the MN may also send the SCG counter, and / or the identifier (ID) of the candidate SN / PSCell, and / or the SCell list and its configuration to the UE.

[0175] Step 8: When the UE performs measurement, it evaluates whether each candidate SN / PSCell meets the candidate SN / PSCell addition condition configuration information and / or candidate SN / PSCell configuration information. If so, the UE initiates a random access process to the candidate SN / PSCell that meets the conditions (i.e., the target SN / PSCell).

[0176] Alternatively, when the UE performs measurement, it evaluates whether each candidate SN / PSCell satisfies the candidate SN / PSCell's adding condition configuration information and / or candidate SN / PSCell configuration information, and whether the source SN / PSCell satisfies the source SN / PSCell's releasing condition configuration information. If both the adding condition configuration information and the releasing condition configuration information are satisfied, the UE initiates a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell). If the adding condition configuration information is satisfied and the releasing condition configuration information is not satisfied, the UE may initiate a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell), or decide whether to initiate a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell) according to its own settings.

[0177] Optionally, if the MN sends the configuration information of the PSCell in the candidate SN to the UE in the above step 7, that is, the MN has configured the PSCell in the candidate SN for the UE, then in this step, the UE may initiate a random access process to the PSCell.

[0178] Alternatively, if in the above step 7 the MN sends one or more PSCell configuration information and corresponding PSCell condition configuration information to the UE, that is, the MN has notified the UE of the conditions for each cell in the candidate SN to become a PSCell; then in this step, the UE can determine which cell in the candidate SN that meets the conditions (that is, the target SN) meets the PSCell condition configuration information, and take the cell that meets the PSCell condition configuration information as the PSCell, and initiate a random access process to the PSCell; if none of the current cells meet the corresponding PSCell condition configuration information, the UE initiates a random access process to the default PSCell.

[0179] Example 3:

[0180] In this embodiment, the source SN initiates the conditional SN / PSCell change process. The source SN / PSCell generates configuration information for changing the SN / PSCell, such as configuration information for adding conditional conditions of the candidate SN / PSCell and / or configuration information for releasing conditional conditions of the source SN / PSCell, and sends it to the UE via the mobile node. The candidate SN / PSCell generates configuration information for the candidate SN / PSCell and sends it to the UE via the mobile node.

[0181] Figure 6 This is a flowchart of the implementation of the third embodiment of this application. Figure 6 As shown, the following steps are included:

[0182] Step 1: MR-DC is configured between the UE, MN and source SN. The UE reports its measurement results to the MN.

[0183] Step 2: The MN sends the measurement results reported by the UE and / or the SN / PSCell condition change indication to the source SN.

[0184] Step 3: Based on the UE's measurement results, the source SN generates one or more pieces of configuration information for changing the SN / PSCell and identification information of candidate SN / PSCell nodes, and sends them to the MN. The configuration information for changing the SN / PSCell may include configuration information for adding conditions for the candidate SN / PSCell and / or configuration information for releasing conditions for the source SN / PSCell.

[0185] Step 4: The MN initiates a conditional SN / PSCell change process to each candidate SN / PSCell and notifies the candidate SN / PSCell of at least one of the following: configuration information of the changed SN / PSCell, measurement results of the UE, S-KgNB of the candidate SN / PSCell, identification (ID) of the candidate SN / PSCell, etc.

[0186] Step 5: The candidate SN / PSCell generates configuration information of the candidate SN / PSCell and sends it to the MN.

[0187] Optionally, the candidate SN / PSCell may send SN / PSCell configuration information in the candidate SN to the MN.

[0188] Alternatively, the candidate SN / PSCell may send configuration information of one or more candidate PSCells and corresponding PSCell condition configuration information, and / or configuration information of the default PSCell to gNB1. The corresponding PSCell condition configuration information may refer to the conditions under which each cell in the candidate SN becomes a PSCell. The default PSCell may refer to the default PSCell in the candidate SN.

[0189] Step 6: The MN sends the candidate SN / PSCell addition condition configuration information and the corresponding SN / PSCell configuration information to the UE; or,

[0190] The MN sends the candidate SN / PSCell addition condition configuration information, as well as the configuration information of one or more PSCells and the corresponding PSCell condition configuration information, and / or the default PSCell configuration information to the UE. The corresponding PSCell condition configuration information may refer to the conditions for each cell in the SN to become a PSCell. The default PSCell may refer to the default PSCell in the SN.

[0191] Furthermore, the MN may send the release condition configuration information of the source SN to the UE.

[0192] Furthermore, the MN may also send the SCG counter, and / or the identifier (ID) of the candidate SN / PSCell, and / or the SCell list and its configuration to the UE.

[0193] Step 7: When the UE performs measurement, it evaluates whether each candidate SN / PSCell meets the candidate SN / PSCell addition condition configuration information and / or candidate SN / PSCell configuration information. If so, the UE initiates a random access process to the candidate SN / PSCell that meets the conditions (i.e., the target SN / PSCell).

[0194] Alternatively, when the UE performs measurement, it evaluates whether each candidate SN / PSCell satisfies the candidate SN / PSCell's adding condition configuration information and / or candidate SN / PSCell configuration information, and whether the source SN / PSCell satisfies the source SN / PSCell's releasing condition configuration information. If both the adding condition configuration information and the releasing condition configuration information are satisfied, the UE initiates a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell). If the adding condition configuration information is satisfied and the releasing condition configuration information is not satisfied, the UE may initiate a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell), or decide whether to initiate a random access process to the candidate SN / PSCell that satisfies the conditions (i.e., the target SN / PSCell) according to its own settings.

[0195] Optionally, if the MN sends the configuration information of the PSCell in the candidate SN to the UE in the above step 6, that is, the MN has configured the PSCell in the candidate SN for the UE, then in this step, the UE may initiate a random access process to the PSCell.

[0196] Alternatively, if in the above step 6, the MN sends one or more PSCell configuration information and corresponding PSCell condition configuration information to the UE, that is, the MN has notified the UE of the conditions for each cell in the candidate SN to become a PSCell; then in this step, the UE can determine which cell in the candidate SN that meets the conditions (that is, the target SN) meets the PSCell condition configuration information, and take the cell that meets the PSCell condition configuration information as the PSCell, and initiate a random access process to the PSCell; if none of the current cells meet the corresponding PSCell condition configuration information, the UE initiates a random access process to the default PSCell.

[0197] The above describes three embodiments of a conditional SN change or PSCell change method. In embodiments 1 and 2, the MN initiates the SN / PSCell change, while in embodiment 3, the SN initiates the SN / PSCell change. The configuration information used to change the SN / PSCell can be determined by the MN and / or the SN. The conditional PSCell change or SN change proposed in the embodiments of the present application can reduce air interface signaling, quickly and promptly add a PSCell or SN, and achieve rapid load offloading.

[0198] Based on the above three embodiments, the UE initiates a random access process to the target PSCell. Afterwards, the target SN notifies the MN to trigger data forwarding and / or activate the GTP tunnel, and / or establish a GTP tunnel process. Data forwarding may include the source SN forwarding data to the MN, the MN forwarding data to the target SN, and / or the UPF sending data to the target SN. GTP tunnel activation may include activating a GTP tunnel from the source SN to the MN, activating a GTP tunnel from the MN to the target SN, and / or activating a GTP tunnel from the UPF to the target SN. Establishing a GTP tunnel may include establishing a GTP tunnel from the source SN to the MN, a GTP tunnel from the MN to the target SN, and / or a GTP tunnel from the UPF to the target SN.

[0199] Example 4:

[0200] This embodiment introduces the process of establishing a GTP tunnel. Figure 7 This is a flowchart of the implementation of the fourth embodiment of this application. Figure 7 As shown, the following steps are included:

[0201] Step 1: The UE obtains the addition condition configuration information of each candidate SN / PSCell and the configuration information of the candidate SN / PSCell. Furthermore, the UE can also obtain the release condition configuration information of the source SN / PSCell.

[0202] Step 2: The UE performs measurements and evaluates the conditions for adding a SN / PSCell. If the conditions for adding a candidate SN / PSCell are met, a random access procedure is initiated to the candidate SN / PSCell. Furthermore, the UE may also evaluate the release conditions of the source SN / PSCell and, if the release conditions of the source SN / PSCell are met, initiate a random access procedure to the candidate SN / PSCell.

[0203] Step 3: The candidate SN / PSCell accessed by the UE (i.e., the target SN / PSCell) sends a GTP tunnel establishment request to the MN, which carries the GTP TEID allocated by the candidate SN / PSCell to the MN and / or the GTP TEID allocated to the AMF / UPF.

[0204] Step 4: The MN sends a GTP tunnel establishment request to the source SN / PSCell. The request carries the GTP TEID allocated by the MN to the source SN / PSCell.

[0205] Step 5: The source SN / PSCell sends a GTP tunnel establishment confirmation message to the MN.

[0206] Step 6: The MN sends a GTP tunnel establishment request to the AMF / UPF, which carries the GTP TEID allocated by the candidate SN / PSCell to the AMF / UPF.

[0207] Step 7: The AMF / UPF sends a GTP tunnel establishment confirmation message to the MN, which carries the GTP TEID allocated by the AMF / UPF to the candidate SN / PSCel.

[0208] Step 8: The MN sends a GTP tunnel establishment confirmation message to the candidate SN / PSCell, which carries the GTP TEID allocated by the AMF / UPF to the candidate SN / PSCell and / or the GTP TEID allocated by the MN to the candidate SN / PSCell.

[0209] Through steps 3 to 8 above, the GTP tunnels between the MN and the source SN / PSCell, the GTP tunnel between the MN and the candidate SN / PSCell, and the GTP tunnel between the AMF / UPF and the candidate SN / PSCell are established. Afterwards, the source SN / PSCell can use the GTP tunnel between the MN and the source SN / PSCell to send data to the MN, the MN can use the GTP tunnel between the source SN / PSCell and the candidate SN / PSCell to forward data to the candidate SN / PSCell, and the AMF / UPF can use the GTP tunnel between the source SN / PSCell and the candidate SN / PSCell to forward data to the candidate SN / PSCell.

[0210] Embodiment 5:

[0211] This embodiment introduces the GTP tunnel activation process. In this embodiment, before the SN condition configuration process, the GTP tunnels between the MN and the source SN / PSCell, the GTP tunnels between the MN and the candidate SN / PSCell, and the GTP tunnels between the AMF / UPF and the candidate SN / PSCell are pre-established.

[0212] Figure 8 This is a flowchart of the implementation of the fifth embodiment of this application. Figure 8 As shown, the following steps are included:

[0213] Step 1: The UE obtains the addition condition configuration information of each candidate SN / PSCell and the configuration information of the candidate SN / PSCell. Furthermore, the UE can also obtain the release condition configuration information of the source SN / PSCell.

[0214] Step 2: The UE performs measurements and evaluates the conditions for adding a SN / PSCell. If the conditions for adding a candidate SN / PSCell are met, a random access procedure is initiated to the candidate SN / PSCell. Furthermore, the UE may also evaluate the release conditions of the source SN / PSCell and, if the release conditions of the source SN / PSCell are met, initiate a random access procedure to the candidate SN / PSCell.

[0215] Step 3: The candidate SN / PSCell (ie, target SN / PSCell) to which the UE accesses sends a GTP tunnel activation request to the MN.

[0216] Step 4: The MN sends a GTP tunnel activation request to the source SN / PSCell.

[0217] Step 5: The source SN / PSCell sends a GTP tunnel activation confirmation message to the MN.

[0218] Step 6: MN sends a GTP tunnel activation request to AMF / UPF.

[0219] Step 7: AMF / UPF sends a GTP tunnel activation confirmation message to the MN.

[0220] Step 8: The MN sends a GTP tunnel activation confirmation message to the candidate SN / PSCell.

[0221] Through steps 3 to 6 above, the pre-established GTP tunnels between the MN and the source SN / PSCell, the GTP tunnel between the MN and the candidate SN / PSCell, and the GTP tunnel between the AMF / UPF and the candidate SN / PSCell are activated. Afterwards, the source SN / PSCell can use the GTP tunnel between the source SN / PSCell and the MN to send data to the MN, the MN can use the GTP tunnel between the source SN / PSCell and the candidate SN / PSCell to forward data to the candidate SN / PSCell, and the AMF / UPF can use the GTP tunnel between the source SN / PSCell and the candidate SN / PSCell to forward data to the candidate SN / PSCell.

[0222] In this embodiment, the GTP tunnel is established during the SN condition configuration process. Data forwarding begins only when the UE performs random access, triggering GTP tunnel activation. In the fourth embodiment, GTP tunnel establishment is triggered only after the UE performs random access, resulting in a minimal difference between the two. However, the method in this embodiment offers a slight improvement in latency.

[0223] This embodiment also proposes a condition-based method for changing a secondary node or a primary and secondary cell, which can be applied to a primary node. Figure 99 is a flowchart of a conditional SN / PSCell change method 900 according to an embodiment of the present application, comprising the following steps:

[0224] S910: Sending configuration information for changing the SN / PSCell to the terminal device, where the configuration information for changing the SN / PSCell includes at least one of the following:

[0225] Configuration information of adding conditions for candidate SN / PSCell;

[0226] Configuration information of candidate SN / PSCell;

[0227] Release condition configuration information of the source SN / PSCell.

[0228] Optionally, the above-mentioned candidate SN / PSCell addition condition configuration information includes:

[0229] Additional condition configuration information configured for each candidate SN / PSCell; and / or,

[0230] The same added condition configuration information is configured for all candidate SN / PSCells.

[0231] The above-mentioned candidate SN / PSCell addition condition configuration information can be determined by the MN based on the UE's measurement results and sent by the MN to the UE. Alternatively, the MN sends the UE's measurement results to each candidate SN, and each candidate SN determines the candidate SN / PSCell addition condition configuration information based on the UE's measurement results and sends it to the UE via the MN.

[0232] The release condition configuration information of the source SN / PSCell may be determined by the MN based on the UE's measurement results and sent by the MN to the UE. Alternatively, the MN sends the UE's measurement results to the source SN, and the source SN determines the release condition configuration information of the source SN / PSCell based on the UE's measurement results and sends it to the UE via the MN.

[0233] Optionally, the configuration information of the candidate SN / PSCell has at least the following two forms:

[0234] First, the configuration information of the candidate SN / PSCell includes at least one of the following:

[0235] Configuration information of the PSCell in the candidate SN;

[0236] Configuration information of at least one SCell in the candidate SN;

[0237] Configuration information of the addition conditions of at least one SCell in the candidate SN.

[0238] Second, the configuration information of the candidate SN / PSCell includes at least one of the following:

[0239] Configuration information of at least one PSCell in the candidate SN and corresponding PSCell condition configuration information (corresponding PSCell condition);

[0240] Configuration information of the default PSCell in the candidate SN;

[0241] Configuration information of at least one SCell in the candidate SN;

[0242] Configuration information of the addition conditions of at least one SCell in the candidate SN.

[0243] The difference between the above two forms is that in the first form, the configuration information of the candidate SN / PSCell has already determined which cell in the candidate SN is the PSCell. In the second form, the configuration information of the candidate SN / PSCell provides the conditions for each cell in the candidate SN to become a PSCell (such as the corresponding PSCell condition configuration information mentioned above), and provides a default PSCell. After receiving the configuration information of the candidate SN / PSCell, the UE determines whether each cell in the target SN to be changed meets the conditions for becoming a PSCell, and determines the cell that meets the conditions as the PSCell; if each cell does not meet the conditions for becoming a PSCell, the above default PSCell is selected as the PSCell.

[0244] The configuration information for changing the SN / PSCell may further include at least one of the following:

[0245] SCG counter (counter);

[0246] The identifier (ID) of at least one candidate SN / PSCell.

[0247] In some implementations, before step S910, the following steps may also be performed:

[0248] A measurement result of the terminal device is received, where the measurement result is used to generate the configuration information for changing the secondary node / primary and secondary cells.

[0249] Corresponding to the above-mentioned embodiment 1, the master node may send the SN / PSCell adding condition configuration information and the UE measurement result to the candidate SN / PSCell, and the candidate SN / PSCell generates the candidate SN / PSCell configuration information.

[0250] Optionally, the above method further includes:

[0251] Determine at least one candidate secondary node / primary and secondary cell according to the measurement result of the terminal device, and generate addition condition configuration information of the candidate secondary node / primary and secondary cell, and / or release condition configuration information of the source secondary node / primary and secondary cell;

[0252] Send at least one of the following to at least one candidate secondary node / primary / secondary cell:

[0253] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0254] Measurement results of terminal equipment;

[0255] a conditional addition indication of the candidate secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node / primary and secondary cell to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device;

[0256] an identifier of at least one candidate secondary node / primary and secondary cell;

[0257] Keys of candidate secondary nodes / primary and secondary cells;

[0258] Configuration information of at least one secondary cell in the secondary node.

[0259] Furthermore, the above method may further include:

[0260] Receive configuration information of a candidate secondary node / primary and secondary cell sent by at least one candidate secondary node / primary and secondary cell.

[0261] In some embodiments, the above method further comprises:

[0262] Send at least one of the following to the source secondary node / primary and secondary cells:

[0263] Release condition configuration information of the source auxiliary node / primary and auxiliary cells;

[0264] Measurement results of terminal equipment;

[0265] Conditional release indication of the source secondary node / primary and secondary cells.

[0266] Corresponding to the above-mentioned embodiment 2, the master node may send the UE's measurement results to the candidate N / PSCell, and the candidate SN / PSCell may generate the candidate SN / PSCell's addition condition configuration information and the SN / PSCell's configuration information. In addition, the master node may also send the UE's measurement results to the source SN / PSCell, and the source SN / PSCell may generate the source SN / PSCell's release condition configuration information.

[0267] Optionally, the above method further includes:

[0268] Determine at least one candidate secondary node / primary and secondary cell based on the measurement result of the terminal device;

[0269] Send at least one of the following to the at least one candidate secondary node / primary and secondary cell:

[0270] Measurement results of terminal equipment;

[0271] The configuration information indication is used to notify the candidate secondary node / primary secondary cell to generate the addition condition configuration information of the candidate secondary node / primary secondary cell and / or the configuration information of the candidate secondary node / primary secondary cell according to the measurement result of the terminal device.

[0272] In one embodiment, the above method further comprises:

[0273] receiving the adding condition configuration information of the candidate secondary node / primary and secondary cell and / or the configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell; the information sent by the candidate secondary node / primary and secondary cell includes at least one of the following:

[0274] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0275] Configuration information of primary and secondary cells in the candidate secondary node;

[0276] Configuration information of at least one secondary cell in the candidate secondary node;

[0277] Addition condition configuration information of at least one secondary cell in the candidate secondary node.

[0278] Alternatively, in another embodiment, the above method further comprises:

[0279] receiving the adding condition configuration information of the candidate secondary node / primary and secondary cell and / or the configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell; the information sent by the candidate secondary node / primary and secondary cell includes at least one of the following:

[0280] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0281] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0282] Configuration information of the default primary and secondary cells in the candidate secondary nodes;

[0283] Configuration information of at least one secondary cell in the candidate secondary node;

[0284] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0285] In some implementations, the primary node further sends a key of the secondary node / primary / secondary cell to at least one candidate secondary node / primary / secondary cell.

[0286] In some implementations, the method further includes: sending at least one of the following to the source secondary node / primary / secondary cell:

[0287] The measurement result of the terminal device;

[0288] Conditional release indication of the source secondary node / primary and secondary cells.

[0289] Optionally, the above method further includes:

[0290] Receive the release condition configuration information of the source secondary node / primary and secondary cell sent by the source secondary node / primary and secondary cell.

[0291] Corresponding to the third embodiment, the method may further include: sending at least one of the following to the source secondary node / primary / secondary cell:

[0292] Measurement results of terminal equipment;

[0293] Condition change indication of secondary node / primary and secondary cells.

[0294] Optionally, the method further includes: receiving at least one of the following items sent by the source secondary node / primary and secondary cells:

[0295] Used to change the configuration information of the secondary node / primary and secondary cells;

[0296] Identification information of candidate secondary nodes / primary and secondary cells.

[0297] Optionally, the method further includes: sending at least one of the following to the candidate secondary node / primary and secondary cells:

[0298] Measurement results of terminal equipment;

[0299] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0300] an identifier of at least one candidate secondary node / primary and secondary cell;

[0301] The key of the candidate secondary node / primary and secondary cell.

[0302] In one embodiment, the method further includes: receiving at least one of the following items sent by each candidate secondary node / primary and secondary cell:

[0303] Configuration information of primary and secondary cells in the candidate secondary node;

[0304] Configuration information of at least one secondary cell in the candidate secondary node;

[0305] Addition condition configuration information of at least one secondary cell in the candidate secondary node.

[0306] Alternatively, in another embodiment, the method further includes: receiving at least one of the following items sent by each candidate secondary node / primary and secondary cell:

[0307] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0308] Configuration information of the default primary and secondary cells in the candidate secondary nodes;

[0309] Configuration information of at least one secondary cell in the candidate secondary node;

[0310] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0311] In one embodiment, the method further includes: receiving at least one of the following items sent by each candidate secondary node / primary and secondary cell:

[0312] Secondary cell group counter;

[0313] The identifier of at least one candidate secondary node / primary and secondary cell.

[0314] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information includes at least the following situations:

[0315] If the original configuration before the change is Next Generation Evolved Universal Radio Access (E-UTRA) and New Radio Access (NR) Dual Connectivity (NGEN-DC), E-UTRA and NR Dual Connectivity (EN-DC), or NR and E-UTRA Dual Connectivity (NE-DC), and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event;

[0316] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0317] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0318] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event.

[0319] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information may be related to the entity that configures the condition, for example:

[0320] If the adding condition configuration information of the candidate SN / PSCell is configured by the candidate SN / PSCell, the adding condition configuration information of the candidate SN / PSCell is based on events A3 and B5.

[0321] In some implementations, the release condition configuration information of the source SN / PSCell includes at least the following:

[0322] If the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the above-mentioned source SN / PSCell is determined based on the measurement results of the serving cell.

[0323] In some implementations, the above-mentioned change of SN / PSCell configuration information includes at least the following situations:

[0324] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above-mentioned changed SN / PSCell configuration information is based on the B1 event;

[0325] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed SN / PSCell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0326] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed SN / PSCell is based on the B1 event.

[0327] In one embodiment, the above method further comprises:

[0328] Receive a first wireless service tunneling protocol GTP tunnel establishment request sent by the candidate secondary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the mobility management function AMF / user plane function UPF;

[0329] Sending a second GTP tunnel establishment request to the source secondary node, where the second GTP tunnel establishment request includes a GTP tunnel identifier allocated by the primary node to the source secondary node;

[0330] receiving a second GTP tunnel establishment confirmation message sent by the source secondary node;

[0331] Send a third GTP tunnel establishment request to the AMF / UPF, where the third GTP tunnel establishment request includes the GTP tunnel identifier allocated by the candidate secondary node to the AMF / UPF;

[0332] receiving a third GTP tunnel establishment confirmation message sent by the AMF / UPF, where the third GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node;

[0333] A first GTP tunnel establishment confirmation message is sent to the candidate secondary node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node and the GTP tunnel identifier allocated by the primary node to the candidate secondary node.

[0334] In one embodiment, the above method further comprises:

[0335] receiving a first GTP tunnel activation request sent by the candidate secondary node;

[0336] Sending a second GTP tunnel activation request to the source secondary node;

[0337] receiving a second GTP tunnel activation confirmation message sent by the source secondary node;

[0338] Send a third GTP tunnel activation request to the AMF / UPF;

[0339] Receive the third GTP tunnel activation confirmation message sent by AMF / UPF;

[0340] Send a first GTP tunnel activation confirmation message to the candidate secondary node.

[0341] Through the above process, the GTP tunnels between the MN and the source SN / PSCell, the GTP tunnels between the MN and the candidate SN / PSCell, and the GTP tunnels between the AMF / UPF and the candidate SN / PSCell are established or activated. Using the GTP tunnels, the above method optionally further includes: the primary node receiving data sent by the source secondary node; and the primary node forwarding the data to the candidate secondary node.

[0342] This embodiment also proposes a condition-based method for changing a secondary node or primary / secondary cell, which can be applied to a candidate secondary node. Figure 10 is a flow chart of a condition-based SN / PSCell change method 1000 according to an embodiment of the present application, including the following steps:

[0343] S1010: Sending configuration information for changing a secondary node / primary and secondary cells to the primary node, where the configuration information for changing a secondary node / primary and secondary cells includes at least one of the following:

[0344] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0345] Configuration information of candidate secondary nodes / primary and secondary cells.

[0346] Optionally, the above-mentioned adding condition configuration information of the candidate secondary node / primary and secondary cells includes:

[0347] Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or,

[0348] The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

[0349] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0350] Configuration information of the primary and secondary cells in the candidate secondary node;

[0351] configuration information of at least one secondary cell among the candidate secondary nodes;

[0352] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0353] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0354] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0355] Configuration information of the default primary and secondary cells in the candidate secondary node;

[0356] configuration information of at least one secondary cell among the candidate secondary nodes;

[0357] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0358] Optionally, before the sending, the following steps are also included:

[0359] Receive information sent by the primary node, and determine configuration information of the candidate secondary node / primary and secondary cells according to the information sent by the primary node, wherein the information sent by the primary node includes at least one of the following:

[0360] Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells;

[0361] Measurement results of terminal equipment;

[0362] A conditional addition indication of a secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device;

[0363] an identifier of at least one candidate secondary node / primary and secondary cell;

[0364] Keys of candidate secondary nodes / primary and secondary cells;

[0365] Information of at least one secondary cell among the candidate secondary nodes.

[0366] Optionally, before the sending, the following steps are also included:

[0367] Receive information sent by the master node, and determine the configuration information for changing the secondary node / primary and secondary cells according to the information sent by the master node; wherein the information sent by the master node includes at least one of the following:

[0368] Measurement results of terminal equipment;

[0369] The configuration information indication is used to notify the candidate secondary node to generate the configuration information for changing the secondary node / primary and secondary cells according to the measurement result of the terminal equipment.

[0370] Optionally, the information sent by the master node further includes at least one of the following:

[0371] Keys of candidate secondary nodes / primary and secondary cells;

[0372] The identifier of at least one candidate secondary node / primary and secondary cell.

[0373] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information includes at least the following situations:

[0374] If the original configuration before the change is Next Generation Evolved Universal Radio Access (E-UTRA) and New Radio Access (NR) Dual Connectivity (NGEN-DC), E-UTRA and NR Dual Connectivity (EN-DC), or NR and E-UTRA Dual Connectivity (NE-DC), and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event;

[0375] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0376] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0377] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event.

[0378] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information may be related to the entity that configures the condition, for example:

[0379] If the adding condition configuration information of the candidate SN / PSCell is configured by the candidate SN / PSCell, the adding condition configuration information of the candidate SN / PSCell is based on events A3 and B5.

[0380] In some implementations, the release condition configuration information of the source SN / PSCell includes at least the following:

[0381] If the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the above-mentioned source SN / PSCell is determined based on the measurement results of the serving cell.

[0382] In some implementations, the above-mentioned change of SN / PSCell configuration information includes at least the following situations:

[0383] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above-mentioned changed SN / PSCell configuration information is based on the B1 event;

[0384] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed SN / PSCell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0385] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed SN / PSCell is based on the B1 event.

[0386] Optionally, the above method further includes:

[0387] Send a first GTP tunnel establishment request to the primary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the AMF / UPF;

[0388] Receive a first GTP tunnel establishment confirmation message sent by the master node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate slave node and the GTP tunnel identifier allocated by the master node to the candidate slave node.

[0389] Optionally, the above method further includes:

[0390] Sending a first GTP tunnel activation request to the master node;

[0391] Receive a first GTP tunnel activation confirmation message sent by the master node.

[0392] Through the above process, a GTP tunnel between the MN and the source SN / PSCell, a GTP tunnel between the MN and the candidate SN / PSCell, and a GTP tunnel between the AMF / UPF and the candidate SN / PSCell are established or activated. Using these GTP tunnels, the above method optionally further includes: receiving data forwarded by the master node; and / or receiving data forwarded by the AMF / UPF.

[0393] This embodiment also proposes a condition-based method for changing a secondary node or a primary and secondary cell, which can be applied to a source secondary node. Figure 11 1100 is a flowchart of a conditional SN / PSCell change method according to an embodiment of the present application, comprising the following steps:

[0394] S1110: Sending configuration information for changing a secondary node / primary and secondary cells to the primary node, where the configuration information for changing a secondary node / primary and secondary cells includes at least one of the following:

[0395] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0396] Release condition configuration information of the source secondary node / primary and secondary cells.

[0397] Optionally, the above-mentioned adding condition configuration information of the candidate secondary node / primary and secondary cells includes:

[0398] Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or,

[0399] The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

[0400] Optionally, before the sending, the following steps are also included:

[0401] Receive information sent by the master node, and determine the configuration information for changing the secondary node / primary and secondary cells according to the information sent by the master node, wherein the information sent by the master node includes at least one of the following:

[0402] Measurement results of terminal equipment;

[0403] Conditional release indication of source secondary node / primary and secondary cells;

[0404] Condition change indication of secondary node / primary and secondary cells.

[0405] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information includes at least the following situations:

[0406] If the original configuration before the change is Next Generation Evolved Universal Radio Access (E-UTRA) and New Radio Access (NR) Dual Connectivity (NGEN-DC), E-UTRA and NR Dual Connectivity (EN-DC), or NR and E-UTRA Dual Connectivity (NE-DC), and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event;

[0407] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0408] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the A4 event;

[0409] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the above-mentioned candidate SN / PSCell addition condition configuration information is based on the B1 event.

[0410] In some implementations, the above-mentioned candidate SN / PSCell addition condition configuration information may be related to the entity that configures the condition, for example:

[0411] If the adding condition configuration information of the candidate SN / PSCell is configured by the candidate SN / PSCell, the adding condition configuration information of the candidate SN / PSCell is based on events A3 and B5.

[0412] In some implementations, the release condition configuration information of the source SN / PSCell includes at least the following:

[0413] If the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the above-mentioned source SN / PSCell is determined based on the measurement results of the serving cell.

[0414] In some implementations, the above-mentioned change of SN / PSCell configuration information includes at least the following situations:

[0415] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the above-mentioned changed SN / PSCell configuration information is based on the B1 event;

[0416] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed SN / PSCell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0417] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed SN / PSCell is based on the B1 event.

[0418] Optionally, the above method further includes:

[0419] receiving a second GTP tunnel establishment request sent by the primary node, where the second GTP tunnel establishment request includes a GTP tunnel identifier allocated by the primary node to the source secondary node;

[0420] Send a second GTP tunnel establishment confirmation message to the master node.

[0421] Optionally, the above method further includes:

[0422] Receive a second GTP tunnel activation request sent by the master node;

[0423] Send a second GTP tunnel activation confirmation message to the master node.

[0424] Optionally, the above method further includes: sending data to the master node.

[0425] The embodiment of the present application also provides a terminal device, Figure 12 1 is a schematic structural diagram of a terminal device 1200 according to an embodiment of the present application, including:

[0426] A first receiving module 1210 is configured to receive configuration information for changing a secondary node / primary and secondary cells;

[0427] A changing module 1220 is configured to change the secondary node / primary and secondary cells by using the configuration information for changing the secondary node / primary and secondary cells;

[0428] The configuration information for changing the secondary node / primary and secondary cells includes at least one of the following:

[0429] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0430] Configuration information of candidate secondary nodes / primary and secondary cells;

[0431] Release condition configuration information of the source secondary node / primary and secondary cells.

[0432] Optionally, the above-mentioned adding condition configuration information of the candidate secondary node / primary and secondary cells includes:

[0433] Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or,

[0434] The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

[0435] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0436] Configuration information of the primary and secondary cells in the candidate secondary node;

[0437] configuration information of at least one secondary cell among the candidate secondary nodes;

[0438] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0439] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0440] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0441] Configuration information of the default primary and secondary cells in the candidate secondary node;

[0442] configuration information of at least one secondary cell among the candidate secondary nodes;

[0443] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0444] Alternatively, as Figure 13 As shown, the above terminal device also includes:

[0445] The first sending module 1330 is configured to send the measurement result of the terminal device to the primary node, where the measurement result is used to generate the configuration information for changing the secondary node / primary and secondary cells.

[0446] Optionally, if the original configuration before the change is Next Generation Evolved Universal Radio Access E-UTRA and New Radio Access NR dual connectivity NGEN-DC, E-UTRA and NR dual connectivity EN-DC, or NR and E-UTRA dual connectivity NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, then the addition condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event;

[0447] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0448] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0449] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

[0450] Optionally, if the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

[0451] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the source secondary node / primary and secondary cells is determined based on the serving cell measurement result.

[0452] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, then the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0453] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event;

[0454] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0455] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

[0456] Optionally, the changing module 1220 is used to:

[0457] Initiate a random access procedure to the candidate secondary node / primary secondary cell corresponding to the adding condition configuration information of the candidate secondary node / primary secondary cell when the current condition satisfies the adding condition configuration information of the candidate secondary node / primary secondary cell and satisfies the releasing condition configuration information of the source secondary node / primary secondary cell; or

[0458] In a case where the current condition satisfies the adding condition configuration information of the candidate secondary node / primary and secondary cell but does not satisfy the releasing condition configuration information of the source secondary node / primary and secondary cell, a random access procedure is initiated to the candidate secondary node / primary and secondary cell corresponding to the adding condition configuration information of the candidate secondary node / primary and secondary cell; or

[0459] When the current conditions meet the adding condition configuration information of the candidate auxiliary node / primary auxiliary cell, but do not meet the releasing condition configuration information of the source auxiliary node / primary auxiliary cell, it is decided whether to initiate a random access process to the candidate auxiliary node / primary auxiliary cell corresponding to the adding condition configuration information of the candidate auxiliary node / primary auxiliary cell according to a pre-set processing method.

[0460] Optionally, the configuration information for changing the secondary node / primary and secondary cells further includes at least one of the following:

[0461] Secondary cell group counter;

[0462] The identifier of at least one candidate secondary node / primary and secondary cell.

[0463] It should be understood that the above and other operations and / or functions of the modules in the terminal device according to the embodiment of the present application are respectively to achieve Figure 3 The corresponding process of the terminal device in the method 300 is not repeated here for the sake of brevity.

[0464] The embodiment of the present application further proposes a network device, which can serve as the above-mentioned MN. Figure 14 13 is a schematic structural diagram of a network device 1300 according to an embodiment of the present application, including:

[0465] The second sending module 1410 is configured to send configuration information for changing a secondary node / primary / secondary cell to a terminal device, where the configuration information for changing a secondary node / primary / secondary cell includes at least one of the following:

[0466] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0467] Configuration information of candidate secondary nodes / primary and secondary cells;

[0468] Release condition configuration information of the source secondary node / primary and secondary cells.

[0469] Optionally, the above-mentioned adding condition configuration information of the candidate secondary node / primary and secondary cells includes:

[0470] Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or,

[0471] The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

[0472] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0473] Configuration information of the primary and secondary cells in the candidate secondary node;

[0474] configuration information of at least one secondary cell among the candidate secondary nodes;

[0475] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0476] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0477] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0478] Configuration information of the default primary and secondary cells in the candidate secondary node;

[0479] configuration information of at least one secondary cell among the candidate secondary nodes;

[0480] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0481] Optionally, the configuration information for changing the secondary node / primary and secondary cells further includes at least one of the following:

[0482] Secondary cell group counter;

[0483] Identifier of at least one secondary node / primary and secondary cells.

[0484] Optionally, the above-mentioned network device is further used to: receive measurement results of the terminal device, and the measurement results are used to generate the configuration information for changing the secondary node / primary and secondary cells.

[0485] Optionally, the network device is further configured to determine at least one candidate secondary node / primary and secondary cell based on the measurement result of the terminal device, and generate addition condition configuration information of the candidate secondary node / primary and secondary cell, and / or release condition configuration information of the source secondary node / primary and secondary cell;

[0486] Send at least one of the following to the at least one candidate secondary node / primary and secondary cell:

[0487] Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells;

[0488] Measurement results of terminal equipment;

[0489] a conditional addition indication of the candidate secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node / primary and secondary cell to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device;

[0490] an identifier of at least one candidate secondary node / primary and secondary cell;

[0491] Keys of candidate secondary nodes / primary and secondary cells;

[0492] Configuration information of at least one secondary cell in the secondary node.

[0493] Optionally, the above-mentioned network device is further used to receive configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell.

[0494] Optionally, the network device is further configured to send at least one of the following to the source secondary node / primary and secondary cells:

[0495] Release condition configuration information of the source auxiliary node / primary and auxiliary cells;

[0496] Measurement results of terminal equipment;

[0497] Conditional release indication of the source secondary node / primary and secondary cells.

[0498] Optionally, the network device is further configured to determine at least one candidate secondary node / primary and secondary cell according to the measurement result of the terminal device;

[0499] Send at least one of the following to the at least one candidate secondary node / primary and secondary cell:

[0500] The measurement result of the terminal device;

[0501] Configuration information indication, the configuration information indication is used to notify the candidate secondary node / primary secondary cell to generate the addition condition configuration information of the candidate secondary node / primary secondary cell and / or the configuration information of the candidate secondary node / primary secondary cell according to the measurement result of the terminal device.

[0502] Optionally, the above-mentioned network device is further used to receive the addition condition configuration information of the candidate secondary node / primary secondary cell and / or the configuration information of the candidate secondary node / primary secondary cell sent by the at least one candidate secondary node / primary secondary cell; the information sent by the candidate secondary node / primary secondary cell includes at least one of the following:

[0503] Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells;

[0504] Configuration information of the primary and secondary cells in the candidate secondary node;

[0505] configuration information of at least one secondary cell among the candidate secondary nodes;

[0506] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0507] Optionally, the above-mentioned network device is further used to receive the addition condition configuration information of the candidate secondary node / primary secondary cell and / or the configuration information of the candidate secondary node / primary secondary cell sent by the at least one candidate secondary node / primary secondary cell; the information sent by the candidate secondary node / primary secondary cell includes at least one of the following:

[0508] Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells;

[0509] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0510] Configuration information of the default primary and secondary cells in the candidate secondary node;

[0511] configuration information of at least one secondary cell among the candidate secondary nodes;

[0512] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0513] Optionally, the above-mentioned network device is further configured to send a key of the secondary node / primary / secondary cell to the at least one candidate secondary node / primary / secondary cell.

[0514] Optionally, the network device is further configured to send at least one of the following to the source secondary node / primary and secondary cells:

[0515] The measurement result of the terminal device;

[0516] Conditional release indication of the source secondary node / primary and secondary cells.

[0517] Optionally, the above-mentioned network device is further used to receive release condition configuration information of the source secondary node / primary and secondary cell sent by the source secondary node / primary and secondary cell.

[0518] Optionally, the network device is further configured to send at least one of the following to the source secondary node / primary and secondary cells:

[0519] The measurement result of the terminal device;

[0520] Condition change indication of secondary node / primary and secondary cells.

[0521] Optionally, the network device is further configured to: receive at least one of the following items sent by the source secondary node / primary / secondary cell:

[0522] The configuration information used to change the secondary node / primary and secondary cells;

[0523] Identification information of candidate secondary nodes / primary and secondary cells.

[0524] Optionally, the network device is further configured to send at least one of the following to each candidate secondary node / primary and secondary cell:

[0525] The measurement result of the terminal device;

[0526] Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells;

[0527] an identifier of at least one candidate secondary node / primary and secondary cell;

[0528] The key of the candidate secondary node / primary and secondary cell.

[0529] Optionally, the network device is further configured to receive at least one of the following items sent by each candidate secondary node / primary and secondary cell:

[0530] Configuration information of the primary and secondary cells in the candidate secondary node;

[0531] configuration information of at least one secondary cell among the candidate secondary nodes;

[0532] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0533] Optionally, the network device is further configured to receive at least one of the following items sent by each candidate secondary node / primary and secondary cell:

[0534] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0535] Configuration information of the default primary and secondary cells in the candidate secondary node;

[0536] configuration information of at least one secondary cell among the candidate secondary nodes;

[0537] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0538] Optionally, the network device is further configured to receive at least one of the following items sent by each candidate secondary node / primary and secondary cell:

[0539] Secondary cell group counter;

[0540] The identifier of at least one candidate secondary node / primary and secondary cell.

[0541] Optionally, if the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event;

[0542] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0543] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0544] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

[0545] Optionally, if the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

[0546] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the source secondary node / primary and secondary cells is determined based on the serving cell measurement result.

[0547] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, then the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0548] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event;

[0549] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0550] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

[0551] Optionally, the above network device is further used to:

[0552] Receive a first wireless service tunneling protocol GTP tunnel establishment request sent by the candidate secondary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the mobility management function AMF / user plane function UPF;

[0553] Sending a second GTP tunnel establishment request to the source secondary node, where the second GTP tunnel establishment request includes a GTP tunnel identifier allocated by the primary node to the source secondary node;

[0554] receiving a second GTP tunnel establishment confirmation message sent by the source secondary node;

[0555] Send a third GTP tunnel establishment request to the AMF / UPF, where the third GTP tunnel establishment request includes the GTP tunnel identifier allocated by the candidate secondary node to the AMF / UPF;

[0556] receiving a third GTP tunnel establishment confirmation message sent by the AMF / UPF, where the third GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node;

[0557] A first GTP tunnel establishment confirmation message is sent to the candidate secondary node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node and the GTP tunnel identifier allocated by the primary node to the candidate secondary node.

[0558] Optionally, the above network device is further used to:

[0559] receiving a first GTP tunnel activation request sent by the candidate secondary node;

[0560] Sending a second GTP tunnel activation request to the source secondary node;

[0561] receiving a second GTP tunnel activation confirmation message sent by the source secondary node;

[0562] Send a third GTP tunnel activation request to the AMF / UPF;

[0563] Receive the third GTP tunnel activation confirmation message sent by AMF / UPF;

[0564] Send a first GTP tunnel activation confirmation message to the candidate secondary node.

[0565] Optionally, the above network device is further used to:

[0566] The master node receives data sent by the source slave node;

[0567] The primary node forwards data to the candidate secondary node.

[0568] It should be understood that the above and other operations and / or functions of the modules in the network device according to the embodiment of the present application are respectively to implement Figure 9 The corresponding process of the MN in the method 900 is not repeated here for the sake of brevity.

[0569] The embodiment of the present application also proposes a network device that can serve as the candidate SN / PSCell. Figure 15 FIG1 is a schematic diagram of the structure of a network device 1500 according to an embodiment of the present application, including:

[0570] The third sending module 1510 is configured to send configuration information for changing a secondary node / primary and secondary cells to the primary node, where the configuration information for changing a secondary node / primary and secondary cells includes at least one of the following:

[0571] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0572] Configuration information of candidate secondary nodes / primary and secondary cells.

[0573] Optionally, the above-mentioned adding condition configuration information of the candidate secondary node / primary and secondary cells includes:

[0574] Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or,

[0575] The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

[0576] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0577] Configuration information of the primary and secondary cells in the candidate secondary node;

[0578] configuration information of at least one secondary cell among the candidate secondary nodes;

[0579] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0580] Optionally, the configuration information of the candidate secondary node / primary and secondary cells includes at least one of the following:

[0581] Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information;

[0582] Configuration information of the default primary and secondary cells in the candidate secondary node;

[0583] configuration information of at least one secondary cell among the candidate secondary nodes;

[0584] Adding condition configuration information of at least one secondary cell in the candidate secondary node.

[0585] Optionally, the above network device is further used to:

[0586] Receive information sent by the primary node, and determine configuration information of the candidate secondary node / primary and secondary cells according to the information sent by the primary node, wherein the information sent by the primary node includes at least one of the following:

[0587] Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells;

[0588] Measurement results of terminal equipment;

[0589] A conditional addition indication of a secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device;

[0590] an identifier of at least one candidate secondary node / primary and secondary cell;

[0591] Keys of candidate secondary nodes / primary and secondary cells;

[0592] Information of at least one secondary cell among the candidate secondary nodes.

[0593] Optionally, the above network device is further used to:

[0594] Receive information sent by the master node, and determine the configuration information for changing the secondary node / primary and secondary cells according to the information sent by the master node; wherein the information sent by the master node includes at least one of the following:

[0595] Measurement results of terminal equipment;

[0596] The configuration information indication is used to notify the candidate secondary node to generate the configuration information for changing the secondary node / primary and secondary cells according to the measurement result of the terminal equipment.

[0597] Optionally, the information sent by the node further includes at least one of the following:

[0598] Keys of candidate secondary nodes / primary and secondary cells;

[0599] The identifier of at least one candidate secondary node / primary and secondary cell.

[0600] Optionally, if the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event;

[0601] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0602] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0603] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

[0604] Optionally, if the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

[0605] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the source secondary node / primary and secondary cells is determined based on the serving cell measurement result.

[0606] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, then the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0607] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event;

[0608] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0609] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

[0610] Optionally, the above network device is further used to:

[0611] Send a first GTP tunnel establishment request to the primary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the AMF / UPF;

[0612] Receive a first GTP tunnel establishment confirmation message sent by the master node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate slave node and the GTP tunnel identifier allocated by the master node to the candidate slave node.

[0613] Optionally, the above network device is further used to:

[0614] Sending a first GTP tunnel activation request to the master node;

[0615] Receive a first GTP tunnel activation confirmation message sent by the master node.

[0616] Optionally, the above network device further includes:

[0617] receiving data forwarded by the master node; and / or,

[0618] Receive data forwarded by the AMF / UPF.

[0619] It should be understood that the above and other operations and / or functions of the modules in the network device according to the embodiment of the present application are respectively to implement Figure 10 For the sake of brevity, the corresponding process of the candidate SN / PSCell in method 1000 is not repeated here.

[0620] The embodiment of the present application also proposes a network device that can serve as the above-mentioned source SN / PSCell. Figure 16 16 is a schematic diagram of the structure of a network device 1600 according to an embodiment of the present application, including:

[0621] The fourth sending module 1610 is configured to send configuration information for changing a secondary node / primary and secondary cells to the primary node, where the configuration information for changing a secondary node / primary and secondary cells includes at least one of the following:

[0622] Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells;

[0623] Release condition configuration information of the source secondary node / primary and secondary cells.

[0624] Optionally, the above-mentioned adding condition configuration information of the candidate secondary node / primary and secondary cells includes:

[0625] Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or,

[0626] The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

[0627] Optionally, the above network device is further used to:

[0628] Receive information sent by the master node, and determine the configuration information for changing the secondary node / primary and secondary cells according to the information sent by the master node, wherein the information sent by the master node includes at least one of the following:

[0629] Measurement results of terminal equipment;

[0630] Conditional release indication of source secondary node / primary and secondary cells;

[0631] Condition change indication of secondary node / primary and secondary cells.

[0632] Optionally, if the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event;

[0633] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0634] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event;

[0635] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

[0636] Optionally, if the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

[0637] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, NE-DC, or NR-DC, the release condition configuration information of the source secondary node / primary and secondary cells is determined based on the serving cell measurement result.

[0638] Optionally, if the original configuration before the change is NGEN-DC, EN-DC, or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, then the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0639] If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event;

[0640] If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event;

[0641] If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

[0642] Optionally, the above network device is further used to:

[0643] receiving a second GTP tunnel establishment request sent by the primary node, where the second GTP tunnel establishment request includes a GTP tunnel identifier allocated by the primary node to the source secondary node;

[0644] Send a second GTP tunnel establishment confirmation message to the master node.

[0645] Optionally, the above network device is further used to:

[0646] Receive a second GTP tunnel activation request sent by the master node;

[0647] Send a second GTP tunnel activation confirmation message to the master node.

[0648] Optionally, the above-mentioned network device is further used to: send data to the master node.

[0649] It should be understood that the above and other operations and / or functions of the modules in the network device according to the embodiment of the present application are respectively to implement Figure 11 For the sake of brevity, the corresponding process of the source SN / PSCell in method 1100 is not repeated here.

[0650] Figure 17 It is a schematic structural diagram of a communication device 1700 according to an embodiment of the present application. Figure 17 The communication device 1700 shown includes a processor 1710, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0651] Alternatively, as Figure 17 As shown, the communication device 1700 may further include a memory 1720. The processor 1710 may call and execute a computer program from the memory 1720 to implement the method in the embodiment of the present application.

[0652] The memory 1720 may be a separate device independent of the processor 1710 , or may be integrated into the processor 1710 .

[0653] Alternatively, as Figure 17 As shown, the communication device 1700 may further include a transceiver 1730 , and the processor 1710 may control the transceiver 1730 to communicate with other devices. Specifically, it may send information or data to other devices, or receive information or data sent by other devices.

[0654] The transceiver 1730 may include a transmitter and a receiver. The transceiver 1730 may further include an antenna, and the number of antennas may be one or more.

[0655] Optionally, the communication device 1700 may be the first terminal device of an embodiment of the present application, and the communication device 1700 may implement the corresponding processes implemented by the first terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0656] Optionally, the communication device 1700 may be a communication device of an embodiment of the present application, such as a network device or a second terminal device, and the communication device 1700 may implement the corresponding processes implemented by the communication device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0657] Figure 18 is a schematic structural diagram of chip 1800 according to an embodiment of the present application. Figure 18 The chip 1800 shown includes a processor 1810, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0658] Alternatively, as Figure 18 As shown, the chip 1800 may further include a memory 1820. The processor 1810 may call and execute a computer program from the memory 1820 to implement the method in the embodiment of the present application.

[0659] The memory 1820 may be a separate device independent of the processor 1810 , or may be integrated into the processor 1810 .

[0660] Optionally, the chip 1800 may further include an input interface 1830. The processor 1810 may control the input interface 1830 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0661] Optionally, the chip 1800 may further include an output interface 1840. The processor 1810 may control the output interface 1840 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0662] Optionally, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0663] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0664] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0665] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0666] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0667] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction can be transmitted from a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state drive (SSD)).

[0668] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0669] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0670] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for changing a secondary node or a primary or secondary cell based on a condition, applied to a terminal device, the method comprising: Receiving configuration information for changing the secondary node / primary and secondary cells; Using the configuration information for changing the secondary node / primary and secondary cells, changing the secondary node / primary and secondary cells; The configuration information for changing the secondary node / primary and secondary cells includes: Configuration information of candidate secondary nodes / primary and secondary cells, and Release condition configuration information of the source auxiliary node / primary and auxiliary cells; The configuration information of the candidate secondary node / primary and secondary cells includes: Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information; The changing of the secondary node / primary and secondary cells by using the configuration information for changing the secondary node / primary and secondary cells includes: Based on the configuration information of at least one primary and secondary cell in the candidate secondary node and the corresponding primary and secondary cell condition configuration information, determining whether each cell in the candidate secondary node that meets the conditions meets the primary and secondary cell condition configuration information; Determine a cell that meets the primary and secondary cell condition configuration information as a primary and secondary cell, and initiate a random access process to the primary and secondary cell; Among them, if the original configuration before the change is the next generation evolved universal radio access E-UTRA and new radio access NR dual connectivity NGEN-DC, E-UTRA and NR dual connectivity EN-DC, NR and E-UTRA dual connectivity NE-DC, NR-DC, the release condition configuration information of the source auxiliary node / primary and secondary cell is determined according to the measurement result of the serving cell.

2. The method according to claim 1, wherein The configuration information for changing the secondary node / primary and secondary cells also includes: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; The configuration information of the adding condition of the candidate secondary node / primary and secondary cell includes: Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or, The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

3. The method according to claim 1 or 2, wherein the configuration information of the candidate secondary node / primary and secondary cells further includes at least one of the following: Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

4. The method according to any one of claims 1 to 3, before receiving the configuration information for changing the secondary node / primary and secondary cells, further comprising: The measurement result of the terminal device is sent to the primary node, where the measurement result is used to generate the configuration information for changing the secondary node / primary and secondary cells.

5. The method according to any one of claims 2 to 4, wherein If the original configuration before the change is NGEN-DC, EN-DC, or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

6. The method according to any one of claims 2 to 4, wherein: If the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

7. The method according to any one of claims 1 to 4, wherein If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, then the configuration information of the changed secondary node / primary and secondary cell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

8. The method according to any one of claims 1 to 7, wherein the changing of the secondary node / primary and secondary cells by using the configuration information for changing the secondary node / primary and secondary cells comprises: Initiate a random access procedure to the candidate secondary node / primary secondary cell corresponding to the adding condition configuration information of the candidate secondary node / primary secondary cell when the current condition satisfies the adding condition configuration information of the candidate secondary node / primary secondary cell and satisfies the releasing condition configuration information of the source secondary node / primary secondary cell; or, In a case where the current condition satisfies the adding condition configuration information of the candidate secondary node / primary and secondary cell but does not satisfy the releasing condition configuration information of the source secondary node / primary and secondary cell, initiating a random access procedure to the candidate secondary node / primary and secondary cell corresponding to the adding condition configuration information of the candidate secondary node / primary and secondary cell; or, When the current conditions meet the adding condition configuration information of the candidate auxiliary node / primary auxiliary cell, but do not meet the releasing condition configuration information of the source auxiliary node / primary auxiliary cell, it is decided whether to initiate a random access process to the candidate auxiliary node / primary auxiliary cell corresponding to the adding condition configuration information of the candidate auxiliary node / primary auxiliary cell according to a pre-set processing method.

9. The method according to any one of claims 1 to 8, wherein the configuration information for changing the secondary node / primary and secondary cells further comprises at least one of the following: Secondary cell group counter; The identifier of at least one candidate secondary node / primary and secondary cell.

10. A method for changing a secondary node or a primary and secondary cell based on a condition, applied to a primary node, the method comprising: Sending configuration information for changing the secondary node / primary and secondary cells to the terminal device, where the configuration information for changing the secondary node / primary and secondary cells includes: Configuration information of candidate secondary nodes / primary and secondary cells, and Release condition configuration information of the source auxiliary node / primary and auxiliary cells; The configuration information of the candidate secondary node / primary and secondary cells includes: configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information, The configuration information of at least one primary and secondary cell in the candidate secondary node and the corresponding primary and secondary cell condition configuration information are used by the terminal device to determine whether each cell in the candidate secondary node that meets the conditions meets the primary and secondary cell condition configuration information, and to determine the cell that meets the primary and secondary cell condition configuration information as the primary and secondary cell and to initiate a random access process to the primary and secondary cell; Among them, if the original configuration before the change is the next generation evolved universal radio access E-UTRA and new radio access NR dual connectivity NGEN-DC, E-UTRA and NR dual connectivity EN-DC, NR and E-UTRA dual connectivity NE-DC, NR-DC, the release condition configuration information of the source auxiliary node / primary and secondary cell is determined according to the measurement result of the serving cell.

11. The method according to claim 10, wherein: The configuration information for changing the secondary node / primary and secondary cells also includes: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; The configuration information of the adding condition of the candidate secondary node / primary and secondary cell includes: Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or, The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

12. The method according to claim 10 or 11, wherein the configuration information of the candidate secondary node / primary and secondary cells further includes at least one of the following: Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

13. The method according to any one of claims 10 to 12, wherein the configuration information for changing the secondary node / primary and secondary cells further comprises at least one of the following: Secondary cell group counter; Identifier of at least one secondary node / primary and secondary cells.

14. The method according to any one of claims 10 to 13, further comprising: Receive measurement results of the terminal device, where the measurement results are used to generate the configuration information for changing the secondary node / primary and secondary cells.

15. The method according to any one of claims 11 to 14, further comprising: Determine at least one candidate secondary node / primary and secondary cell according to the measurement result of the terminal device, and generate addition condition configuration information of the candidate secondary node / primary and secondary cell, and / or release condition configuration information of the source secondary node / primary and secondary cell; Send at least one of the following to the at least one candidate secondary node / primary and secondary cell: Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; Measurement results of terminal equipment; a conditional addition indication of the candidate secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node / primary and secondary cell to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device; an identifier of at least one candidate secondary node / primary and secondary cell; Keys of candidate secondary nodes / primary and secondary cells; Configuration information of at least one secondary cell in the secondary node.

16. The method according to claim 15, further comprising: Receive configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell.

17. The method according to claim 15 or 16, further comprising: Send at least one of the following to the source secondary node / primary and secondary cells: Measurement results of terminal equipment; Conditional release indication of the source secondary node / primary and secondary cells.

18. The method according to any one of claims 11 to 14, further comprising: Determine at least one candidate secondary node / primary and secondary cell based on the measurement result of the terminal device; Send at least one of the following to the at least one candidate secondary node / primary and secondary cell: The measurement result of the terminal device; Configuration information indication, the configuration information indication is used to notify the candidate secondary node / primary secondary cell to generate the addition condition configuration information of the candidate secondary node / primary secondary cell and / or the configuration information of the candidate secondary node / primary secondary cell according to the measurement result of the terminal device.

19. The method according to claim 18, further comprising: receiving the adding condition configuration information of the candidate secondary node / primary and secondary cell and / or the configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell; the information sent by the candidate secondary node / primary and secondary cell includes at least one of the following: Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; Configuration information of the primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

20. The method according to claim 18, further comprising: receiving the adding condition configuration information of the candidate secondary node / primary and secondary cell and / or the configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell; the information sent by the candidate secondary node / primary and secondary cell includes at least one of the following: Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information; Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

21. The method according to any one of claims 15 to 20, further comprising: The primary node sends a key of the secondary node / primary secondary cell to the at least one candidate secondary node / primary secondary cell.

22. The method according to any one of claims 18 to 21, further comprising: Send at least one of the following to the source secondary node / primary and secondary cells: The measurement result of the terminal device; Conditional release indication of the source secondary node / primary and secondary cells.

23. The method according to claim 22, further comprising: Receive the release condition configuration information of the source secondary node / primary and secondary cell sent by the source secondary node / primary and secondary cell.

24. The method according to any one of claims 10 to 14, further comprising: Send at least one of the following to the source secondary node / primary and secondary cells: The measurement result of the terminal device; Condition change indication of secondary node / primary and secondary cells.

25. The method according to claim 24, further comprising: Receive at least one of the following sent by the source secondary node / primary and secondary cells: The configuration information used to change the secondary node / primary and secondary cells; Identification information of candidate secondary nodes / primary and secondary cells.

26. The method according to claim 24 or 25, further comprising: Send at least one of the following to each candidate secondary node / primary and secondary cell: The measurement result of the terminal device; Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; an identifier of at least one candidate secondary node / primary and secondary cell; The key of the candidate secondary node / primary and secondary cell.

27. The method according to claim 26, further comprising: Receive at least one of the following items sent by each candidate secondary node / primary and secondary cell: Configuration information of the primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

28. The method according to claim 26, further comprising: Receive at least one of the following items sent by each candidate secondary node / primary and secondary cell: Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information; Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

29. The method according to claim 27 or 28, further comprising: Receive at least one of the following items sent by each candidate secondary node / primary and secondary cell: Secondary cell group counter; The identifier of at least one candidate secondary node / primary and secondary cell.

30. The method according to any one of claims 11 to 29, wherein If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

31. The method according to any one of claims 11 to 29, wherein If the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

32. The method according to any one of claims 10 to 29, wherein If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, then the configuration information of the changed secondary node / primary and secondary cell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

33. The method according to any one of claims 10 to 32, further comprising: Receive a first wireless service tunneling protocol GTP tunnel establishment request sent by the candidate secondary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the mobility management function AMF / user plane function UPF; Sending a second GTP tunnel establishment request to the source secondary node, where the second GTP tunnel establishment request includes a GTP tunnel identifier allocated by the primary node to the source secondary node; receiving a second GTP tunnel establishment confirmation message sent by the source secondary node; Send a third GTP tunnel establishment request to the AMF / UPF, where the third GTP tunnel establishment request includes the GTP tunnel identifier allocated by the candidate secondary node to the AMF / UPF; receiving a third GTP tunnel establishment confirmation message sent by the AMF / UPF, where the third GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node; A first GTP tunnel establishment confirmation message is sent to the candidate secondary node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node and the GTP tunnel identifier allocated by the primary node to the candidate secondary node.

34. The method according to any one of claims 10 to 32, further comprising: receiving a first GTP tunnel activation request sent by the candidate secondary node; Sending a second GTP tunnel activation request to the source secondary node; receiving a second GTP tunnel activation confirmation message sent by the source secondary node; Send a third GTP tunnel activation request to the AMF / UPF; Receive the third GTP tunnel activation confirmation message sent by AMF / UPF; Send a first GTP tunnel activation confirmation message to the candidate secondary node.

35. The method according to claim 33 or 34, further comprising: The master node receives data sent by the source slave node; The primary node forwards data to the candidate secondary node.

36. A condition-based method for changing a secondary node or a primary / secondary cell, applied to a candidate secondary node, the method comprising: Sending configuration information for changing the secondary node / primary and secondary cells to the primary node, where the configuration information for changing the secondary node / primary and secondary cells includes: Configuration information of candidate secondary nodes / primary and secondary cells, and Release condition configuration information of the source auxiliary node / primary and auxiliary cells; The configuration information of the candidate secondary node / primary and secondary cells includes: Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information; The configuration information of at least one primary and secondary cell in the candidate secondary node and the corresponding primary and secondary cell condition configuration information are used by the terminal device to determine whether each cell in the candidate secondary node that meets the conditions meets the primary and secondary cell condition configuration information, and to determine the cell that meets the primary and secondary cell condition configuration information as the primary and secondary cell and to initiate a random access process to the primary and secondary cell; Among them, if the original configuration before the change is the next generation evolved universal radio access E-UTRA and new radio access NR dual connectivity NGEN-DC, E-UTRA and NR dual connectivity EN-DC, NR and E-UTRA dual connectivity NE-DC, NR-DC, the release condition configuration information of the source auxiliary node / primary and secondary cell is determined according to the measurement result of the serving cell.

37. The method according to claim 36, wherein the configuration information for changing the secondary node / primary and secondary cells further comprises: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; The configuration information of the adding condition of the candidate secondary node / primary and secondary cell includes: Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or, The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

38. The method according to claim 36, wherein the configuration information of the candidate secondary node / primary and secondary cells further comprises at least one of the following: Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

39. The method according to any one of claims 36 to 38, further comprising: Receive information sent by the primary node, and determine configuration information of the candidate secondary node / primary and secondary cells according to the information sent by the primary node, wherein the information sent by the primary node includes at least one of the following: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; Measurement results of terminal equipment; A conditional addition indication of a secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device; an identifier of at least one candidate secondary node / primary and secondary cell; Keys of candidate secondary nodes / primary and secondary cells; Information of at least one secondary cell among the candidate secondary nodes.

40. The method according to any one of claims 36 to 39, further comprising: Receive information sent by the master node, and determine the configuration information for changing the secondary node / primary and secondary cells according to the information sent by the master node; wherein the information sent by the master node includes at least one of the following: Measurement results of terminal equipment; The configuration information indication is used to notify the candidate secondary node to generate the configuration information for changing the secondary node / primary and secondary cells according to the measurement result of the terminal equipment.

41. The method according to claim 40, wherein the information sent by the master node further includes at least one of the following: Keys of candidate secondary nodes / primary and secondary cells; The identifier of at least one candidate secondary node / primary and secondary cell.

42. The method according to any one of claims 37 to 41, wherein If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

43. The method according to any one of claims 37 to 41, wherein If the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

44. The method according to any one of claims 36 to 41, wherein If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, then the configuration information of the changed secondary node / primary and secondary cell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

45. The method according to any one of claims 36 to 44, further comprising: Send a first GTP tunnel establishment request to the primary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the AMF / UPF; Receive a first GTP tunnel establishment confirmation message sent by the master node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate slave node and the GTP tunnel identifier allocated by the master node to the candidate slave node.

46. The method according to any one of claims 36 to 44, further comprising: Sending a first GTP tunnel activation request to the master node; Receive a first GTP tunnel activation confirmation message sent by the master node.

47. The method according to claim 45 or 46, further comprising: Receiving data forwarded by the master node; and / or, Receive data forwarded by AMF / UPF.

48. A terminal device comprising: A first receiving module is configured to receive configuration information for changing a secondary node / primary and secondary cells; a changing module, configured to change the secondary node / primary and secondary cells by using the configuration information for changing the secondary node / primary and secondary cells; The configuration information for changing the secondary node / primary and secondary cells includes: Configuration information of candidate secondary nodes / primary and secondary cells, and Release condition configuration information of the source auxiliary node / primary and auxiliary cells; The configuration information of the candidate secondary node / primary and secondary cells includes: Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information; The changing module is configured to determine whether each cell in the candidate secondary node that meets the conditions meets the primary and secondary cell condition configuration information based on the configuration information of at least one primary and secondary cell in the candidate secondary node and the corresponding primary and secondary cell condition configuration information; and Determine that the cell that meets the primary and secondary cell condition configuration information is the primary and secondary cell, and initiate a random access process to the primary and secondary cell Among them, if the original configuration before the change is the next generation evolved universal radio access E-UTRA and new radio access NR dual connectivity NGEN-DC, E-UTRA and NR dual connectivity EN-DC, NR and E-UTRA dual connectivity NE-DC, NR-DC, the release condition configuration information of the source auxiliary node / primary and secondary cell is determined according to the measurement result of the serving cell.

49. The terminal device according to claim 48, wherein the configuration information for changing the secondary node / primary and secondary cells comprises: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; The configuration information of the adding condition of the candidate secondary node / primary and secondary cell includes: Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or, The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

50. The terminal device according to claim 48 or 49, wherein the configuration information of the candidate secondary node / primary and secondary cell further includes at least one of the following: Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

51. The terminal device according to any one of claims 48 to 50, further comprising: The first sending module is used to send the measurement result of the terminal equipment to the primary node, and the measurement result is used to generate the configuration information for changing the secondary node / primary and secondary cells.

52. The terminal device according to any one of claims 49 to 51, wherein: If the original configuration before the change is NGEN-DC, EN-DC, or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC, or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

53. The terminal device according to any one of claims 49 to 52, wherein: If the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

54. The terminal device according to any one of claims 48 to 52, wherein: If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, then the configuration information of the changed secondary node / primary and secondary cell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

55. The terminal device according to any one of claims 49 to 54, wherein the changing module is configured to: Initiate a random access procedure to the candidate secondary node / primary secondary cell corresponding to the adding condition configuration information of the candidate secondary node / primary secondary cell when the current condition satisfies the adding condition configuration information of the candidate secondary node / primary secondary cell and satisfies the releasing condition configuration information of the source secondary node / primary secondary cell; or, In a case where the current condition satisfies the adding condition configuration information of the candidate secondary node / primary and secondary cell but does not satisfy the releasing condition configuration information of the source secondary node / primary and secondary cell, initiating a random access procedure to the candidate secondary node / primary and secondary cell corresponding to the adding condition configuration information of the candidate secondary node / primary and secondary cell; or, When the current conditions meet the adding condition configuration information of the candidate auxiliary node / primary auxiliary cell, but do not meet the releasing condition configuration information of the source auxiliary node / primary auxiliary cell, it is decided whether to initiate a random access process to the candidate auxiliary node / primary auxiliary cell corresponding to the adding condition configuration information of the candidate auxiliary node / primary auxiliary cell according to a pre-set processing method.

56. The terminal device according to any one of claims 48 to 55, wherein the configuration information for changing the secondary node / primary and secondary cells further comprises at least one of the following: Secondary cell group counter; The identifier of at least one candidate secondary node / primary and secondary cell.

57. A network device comprising: The second sending module is configured to send configuration information for changing the secondary node / primary and secondary cells to the terminal device, where the configuration information for changing the secondary node / primary and secondary cells includes: Configuration information of candidate secondary nodes / primary and secondary cells, and Release condition configuration information of the source auxiliary node / primary and auxiliary cells; The configuration information of the candidate secondary node / primary and secondary cells includes: Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information, The configuration information of at least one primary and secondary cell in the candidate secondary node and the corresponding primary and secondary cell condition configuration information are used by the terminal device to determine whether each cell in the candidate secondary node that meets the conditions meets the primary and secondary cell condition configuration information, and to determine the cell that meets the primary and secondary cell condition configuration information as the primary and secondary cell and to initiate a random access process to the primary and secondary cell; Among them, if the original configuration before the change is the next generation evolved universal radio access E-UTRA and new radio access NR dual connectivity NGEN-DC, E-UTRA and NR dual connectivity EN-DC, NR and E-UTRA dual connectivity NE-DC, NR-DC, the release condition configuration information of the source auxiliary node / primary and secondary cell is determined according to the measurement result of the serving cell.

58. The network device according to claim 57, wherein: The configuration information for changing the secondary node / primary and secondary cells also includes: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; The configuration information of the adding condition of the candidate secondary node / primary and secondary cell includes: Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or, The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

59. The network device according to claim 57 or 58, wherein the configuration information of the candidate secondary node / primary and secondary cell further includes at least one of the following: Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

60. The network device according to any one of claims 57 to 59, wherein the configuration information for changing the secondary node / primary and secondary cells further comprises at least one of the following: Secondary cell group counter; Identifier of at least one secondary node / primary and secondary cells.

61. The network device according to any one of claims 57 to 60, further comprising: The second receiving module is used to receive the measurement result of the terminal device, and the measurement result is used to generate the configuration information for changing the secondary node / primary and secondary cells.

62. The network device according to any one of claims 58 to 61, further configured to determine, based on the measurement result of the terminal device, at least one candidate secondary node / primary and secondary cell, and generate addition condition configuration information of the candidate secondary node / primary and secondary cell, and / or release condition configuration information of the source secondary node / primary and secondary cell; Send at least one of the following to the at least one candidate secondary node / primary and secondary cell: Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; Measurement results of terminal equipment; a conditional addition indication of the candidate secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node / primary and secondary cell to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device; an identifier of at least one candidate secondary node / primary and secondary cell; Keys of candidate secondary nodes / primary and secondary cells; Configuration information of at least one secondary cell in the secondary node.

63. The network device according to claim 62, further configured to receive configuration information of the candidate secondary node / primary secondary cell sent by the at least one candidate secondary node / primary secondary cell.

64. The network device according to claim 62 or 63, further configured to send at least one of the following to the source secondary node / primary and secondary cells: Measurement results of terminal equipment; Conditional release indication of the source secondary node / primary and secondary cells.

65. The network device according to any one of claims 58 to 61, further configured to determine at least one candidate secondary node / primary and secondary cell based on a measurement result of the terminal device; Send at least one of the following to the at least one candidate secondary node / primary and secondary cell: The measurement result of the terminal device; Configuration information indication, the configuration information indication is used to notify the candidate secondary node / primary secondary cell to generate the addition condition configuration information of the candidate secondary node / primary secondary cell and / or the configuration information of the candidate secondary node / primary secondary cell according to the measurement result of the terminal device.

66. The network device according to claim 65, wherein the network device is further configured to receive addition condition configuration information of the candidate secondary node / primary and secondary cell and / or configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell; the information sent by the candidate secondary node / primary and secondary cell includes at least one of the following: Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; Configuration information of the primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

67. The network device according to claim 65, wherein the network device is further configured to receive addition condition configuration information of the candidate secondary node / primary and secondary cell and / or configuration information of the candidate secondary node / primary and secondary cell sent by the at least one candidate secondary node / primary and secondary cell; the information sent by the candidate secondary node / primary and secondary cell includes at least one of the following: Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information; Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

68. The network device according to any one of claims 62 to 67, further configured to send a key of a secondary node / primary secondary cell to the at least one candidate secondary node / primary secondary cell.

69. The network device according to any one of claims 65 to 68, further configured to send at least one of the following to the source secondary node / primary and secondary cells: The measurement result of the terminal device; Conditional release indication of the source secondary node / primary and secondary cells.

70. The network device according to claim 69, further configured to receive release condition configuration information of the source secondary node / primary secondary cell sent by the source secondary node / primary secondary cell.

71. The network device according to any one of claims 57 to 61, further configured to send at least one of the following to the source secondary node / primary and secondary cells: The measurement result of the terminal device; Condition change indication of secondary node / primary and secondary cells.

72. The network device according to claim 71, further configured to receive at least one of the following sent by the source secondary node / primary / secondary cell: The configuration information used to change the secondary node / primary and secondary cells; Identification information of candidate secondary nodes / primary and secondary cells.

73. The network device according to claim 71 or 72, further configured to send at least one of the following to each candidate secondary node / primary and secondary cell: The measurement result of the terminal device; Configuration information of conditions for adding the candidate secondary nodes / primary and secondary cells; an identifier of at least one candidate secondary node / primary and secondary cell; The key of the candidate secondary node / primary and secondary cell.

74. The network device according to claim 73, further configured to receive at least one of the following items sent by each candidate secondary node / primary and secondary cell: Configuration information of the primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

75. The network device according to claim 74, further configured to receive at least one of the following items sent by each candidate secondary node / primary and secondary cell: Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information; Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

76. The network device according to claim 74 or 75, further configured to receive at least one of the following items sent by each candidate secondary node / primary and secondary cell: Secondary cell group counter; The identifier of at least one candidate secondary node / primary and secondary cell.

77. The network device according to any one of claims 58 to 66, wherein: If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

78. The network device according to any one of claims 58 to 66, wherein: If the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

79. The network device according to any one of claims 57 to 66, wherein: If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, then the configuration information of the changed secondary node / primary and secondary cell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

80. The network device according to any one of claims 57 to 79, further configured to: Receive a first wireless service tunneling protocol GTP tunnel establishment request sent by the candidate secondary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the mobility management function AMF / user plane function UPF; Sending a second GTP tunnel establishment request to the source secondary node, where the second GTP tunnel establishment request includes a GTP tunnel identifier allocated by the primary node to the source secondary node; receiving a second GTP tunnel establishment confirmation message sent by the source secondary node; Send a third GTP tunnel establishment request to the AMF / UPF, where the third GTP tunnel establishment request includes the GTP tunnel identifier allocated by the candidate secondary node to the AMF / UPF; receiving a third GTP tunnel establishment confirmation message sent by the AMF / UPF, where the third GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node; A first GTP tunnel establishment confirmation message is sent to the candidate secondary node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate secondary node and the GTP tunnel identifier allocated by the primary node to the candidate secondary node.

81. The network device according to any one of claims 57 to 79, further configured to: receiving a first GTP tunnel activation request sent by the candidate secondary node; Sending a second GTP tunnel activation request to the source secondary node; receiving a second GTP tunnel activation confirmation message sent by the source secondary node; Send a third GTP tunnel activation request to the AMF / UPF; Receive the third GTP tunnel activation confirmation message sent by AMF / UPF; Send a first GTP tunnel activation confirmation message to the candidate secondary node.

82. The network device according to claim 80 or 81, further configured to: The master node receives the data sent by the source slave node; The primary node forwards data to the candidate secondary node.

83. A network device comprising: The third sending module is configured to send configuration information for changing the secondary node / primary and secondary cells to the primary node, where the configuration information for changing the secondary node / primary and secondary cells includes: Configuration information of candidate secondary nodes / primary and secondary cells, and Release condition configuration information of the source auxiliary node / primary and auxiliary cells; The configuration information of the candidate secondary node / primary and secondary cells includes: Configuration information of at least one primary and secondary cell in the candidate secondary node and corresponding primary and secondary cell condition configuration information, The configuration information of at least one primary and secondary cell in the candidate secondary node and the corresponding primary and secondary cell condition configuration information are used by the terminal device to determine whether each cell in the candidate secondary node that meets the conditions meets the primary and secondary cell condition configuration information, and to determine the cell that meets the primary and secondary cell condition configuration information as the primary and secondary cell and to initiate a random access process to the primary and secondary cell; Among them, if the original configuration before the change is the next generation evolved universal radio access E-UTRA and new radio access NR dual connectivity NGEN-DC, E-UTRA and NR dual connectivity EN-DC, NR and E-UTRA dual connectivity NE-DC, NR-DC, the release condition configuration information of the source auxiliary node / primary and secondary cell is determined according to the measurement result of the serving cell.

84. The network device according to claim 83, wherein The configuration information for changing the secondary node / primary and secondary cells also includes: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; The configuration information of the adding condition of the candidate secondary node / primary and secondary cell includes: Addition condition configuration information configured for each candidate secondary node / primary and secondary cell; and / or, The same adding condition configuration information is configured for all candidate secondary nodes / primary and secondary cells.

85. The network device according to claim 83 or 84, wherein the configuration information of the candidate secondary node / primary and secondary cells further includes at least one of the following: Configuration information of the default primary and secondary cells in the candidate secondary node; configuration information of at least one secondary cell among the candidate secondary nodes; Adding condition configuration information of at least one secondary cell in the candidate secondary node.

86. The network device according to claim 84 or 85, further configured to: Receive information sent by the primary node, and determine configuration information of the candidate secondary node / primary and secondary cells according to the information sent by the primary node: The information sent by the master node includes at least one of the following: Configuration information on adding conditions for candidate secondary nodes / primary and secondary cells; Measurement results of terminal equipment; A conditional addition indication of a secondary node / primary and secondary cell, the conditional addition indication being used to notify the candidate secondary node to generate configuration information of the candidate secondary node / primary and secondary cell according to a measurement result of the terminal device; an identifier of at least one candidate secondary node / primary and secondary cell; Keys of candidate secondary nodes / primary and secondary cells; Information of at least one secondary cell among the candidate secondary nodes.

87. The network device according to any one of claims 83 to 86, further configured to: receiving information sent by the master node, and determining the configuration information for changing the secondary node / primary and secondary cells according to the information sent by the master node; wherein, The information sent by the master node includes at least one of the following: Measurement results of terminal equipment; The configuration information indication is used to notify the candidate secondary node to generate the configuration information for changing the secondary node / primary and secondary cells according to the measurement result of the terminal equipment.

88. The network device according to claim 87, wherein the information sent by the master node further includes at least one of the following: Keys of candidate secondary nodes / primary and secondary cells; The identifier of at least one candidate secondary node / primary and secondary cell.

89. The network device according to any one of claims 84 to 88, wherein: If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the A4 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the adding condition configuration information of the candidate secondary node / primary and secondary cell is based on the B1 event.

90. The network device according to any one of claims 84 to 88, wherein: If the adding condition configuration information of the candidate secondary node / primary secondary cell is configured by the candidate secondary node / primary secondary cell, the adding condition configuration information of the candidate secondary node / primary secondary cell is based on events A3 and B5.

91. The network device according to any one of claims 83 to 88, wherein: If the original configuration before the change is NGEN-DC, EN-DC or NE-DC, and the target configuration after the change is NGEN-DC, EN-DC or NE-DC, then the configuration information of the changed secondary node / primary and secondary cell is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NE-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event; If the original configuration before the change is NR-DC and the target configuration after the change is NR-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the A2 event and the A4 event, or based on the A4 event, or based on the A3 event, or based on the A5 event, or based on the A3 event and the A5 event; If the original configuration before the change is NR-DC and the target configuration after the change is NE-DC, the configuration information of the changed secondary node / primary and secondary cells is based on the B1 event.

92. The network device according to any one of claims 83 to 91, further configured to: Send a first GTP tunnel establishment request to the primary node, where the first GTP tunnel establishment request includes a GTP tunnel identifier allocated by the candidate secondary node to the primary node and the AMF / UPF; Receive a first GTP tunnel establishment confirmation message sent by the master node, where the first GTP tunnel establishment confirmation message includes the GTP tunnel identifier allocated by the AMF / UPF to the candidate slave node and the GTP tunnel identifier allocated by the master node to the candidate slave node.

93. The network device according to any one of claims 83 to 91, further configured to: Sending a first GTP tunnel activation request to the master node; Receive a first GTP tunnel activation confirmation message sent by the master node.

94. The network device according to claim 92 or 93, further comprising: Receiving data forwarded by the master node; and / or, Receive data forwarded by AMF / UPF.

95. A terminal device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 9.

96. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 10 to 47.

97. A chip comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 9.

98. A chip, comprising: A processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes a method according to any one of claims 10 to 47.

99. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 9.

100. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 10 to 47.

101. A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method according to any one of claims 1 to 9.

102. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 10 to 47.

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