Communication Method, Device, Related Equipment and Storage Medium

Abstract

The present application discloses a communication method, apparatus, master node, secondary node, terminal, and storage medium. The method includes negotiating first information with a secondary node by a master node or transmitting the first information to the secondary node, where the first information includes setting upper limit related information of candidate primary secondary cells that can be set for a terminal.

Description

Technical Field

[0001] This application is filed based on a Chinese patent application with an application number of 202210730543.3 and a filing date of June 24, 2022. The priority of the Chinese patent application is claimed, and all the contents of the Chinese patent application are incorporated herein by reference. This application relates to the field of wireless communication, and in particular, to communication methods, devices, related equipment, and storage media.

Background Art

[0002] Conditional Hand Over (CHO) is a mechanism to enhance the robustness of the handover process, which can avoid the situation where the channel between the user equipment (UE) and the serving cell suddenly deteriorates (especially in high-frequency or high-speed UE movement scenarios), making it impossible for the UE to complete the handover process normally. Specifically, as shown in Figure 1, the base station can be set so that the UE triggers a measurement report at a low threshold, the handover command can carry a high trigger handover threshold, and the UE can carry the random access resources used in the target cell. Once the handover threshold is met, the UE can start the random access process to the target base station. Similarly, for the multi-connection (e.g., dual-connection) scenario, to improve the robustness of the addition or change of the Primary Secondary Cell (PSCell), Conditional PSCell Addition (CPA) and Conditional PSCell Change (CPC) are processes in which the network-side Master Node (MN) or Secondary Node (SN) pre-transmits the conditions for PSCell addition or change to the terminal, and when it is measured that the terminal meets the conditions for the target PSCell, the terminal spontaneously performs PSCell addition or change.

[0003] There is no effective solution in the related art for how the terminal simultaneously considers CHO and CPA / CPC.

Summary of the Invention

[0004] To solve the related technical problems, embodiments of the present application provide a communication method, apparatus, related device, and storage medium.

[0005] The technical solution of the embodiments of the present application is realized as follows.

[0006] Embodiments of the present application provide a communication method, which is applied to an MN, and includes the step of negotiating with an SN for first information or transmitting the first information to the SN, where the first information includes configuration upper limit related information of candidate PSCs that can be configured for the terminal.

[0007] In the above aspect, the first information includes the maximum number of candidate PSCs, the maximum number of candidate frequency points, the maximum number of candidate measurement identifiers, the maximum number of candidate PSCs at each candidate frequency point, and at least one of the maximum number of CPCs.

[0008] In the above aspect, the method further includes the step of transmitting second information to the terminal, where the second information characterizes the relationship between a candidate primary cell (PCell) and candidate PSCs.

[0009] In the above aspect, the step of transmitting second information to the terminal includes when transmitting third information to the terminal, transmitting the second information to the terminal, or after transmitting the third information to the terminal, transmitting the second information to the terminal, where the third information includes CHO configuration information in the multi-connection of the terminal, and It includes at least one of the configuration information of CPA or CPC.

[0010] In the above aspect, the method further includes the step of receiving the fourth information transmitted by the SN, where the fourth information includes the configuration information of the candidate PSCell set by the SN for the terminal, and the fourth information includes at least one of the number of candidate PSCs, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate PSCs at each candidate frequency point, and

[0011] The embodiments of the present application further provide a communication method, which is applied to the SN and includes the step of negotiating with the MN for the first information or receiving the first information transmitted by the MN, where the first information includes the configuration upper limit related information of the candidate PSCell that can be set for the terminal.

[0012] In the above aspect, the first information includes at least one of the maximum number of candidate PSCs, the maximum number of candidate frequency points, the maximum number of candidate measurement identifiers, the maximum number of candidate PSCs at each candidate frequency point, and

[0013] In the above aspect, the method further includes the step of transmitting the second information to the terminal, where the second information characterizes the relationship between the candidate PCell and the candidate PSCell.

[0014] In the above aspect, the step of transmitting the second information to the terminal When transmitting the fifth information to the terminal, it includes the step of transmitting the second information to the terminal, or after transmitting the fifth information to the terminal, transmitting the second information to the terminal, and the fifth information includes the setting information of CPC.

[0015] In the above aspect, the method further includes: the step of transmitting the fourth information to the MN, the fourth information includes the setting information of the candidate PSCell set by the SN for the terminal, and the fourth information includes the number of candidate PSCs; the number of candidate frequency points; the number of candidate measurement identifiers; the number of candidate PSCs at each candidate frequency point, and includes at least one of the number of CPCs.

[0016] The embodiments of the present application further provide a communication method, which is applied to a terminal, and includes the step of receiving the second information transmitted by the MN and / or the SN, and the second information characterizes the relationship between the candidate PCell and the candidate PSCell.

[0017] In the above aspect, the step of receiving the second information transmitted by the MN is when receiving the third information transmitted by the MN, receiving the second information transmitted by the MN, or after receiving the third information transmitted by the MN, receiving the second information transmitted by the MN, and the third information includes CHO setting information in the multi-connection of the terminal, and at least one of the setting information of CPA or CPC.

[0018] In the above aspect, the step of receiving the second information transmitted by the SN is When receiving the fifth information transmitted by the SN, receiving the second information transmitted by the SN, or after receiving the fifth information transmitted by the SN, receiving the second information transmitted by the SN, where the fifth information includes the configuration information of the CPC.

[0019] In the above aspect, the method includes: When the CHO of the PCell is triggered, further including the step of preferentially measuring the candidate PSCell related to the candidate PCell.

[0020] In the above aspect, the method includes: Further including the step of not measuring the candidate PSCell not related to the candidate PCell.

[0021] In the above aspect, the method includes: When the CHO of the PCell and the CPC or CPA are triggered simultaneously, further including the step of preferentially performing the CHO of the PCell.

[0022] In the above aspect, the method includes: When a failure occurs in the CHO of the PCell and the first candidate PCell is selected, further including the step of preferentially measuring the candidate PSCell related to the first candidate PCell.

[0023] The embodiments of the present application further provide a communication device, which is set in the MN and includes a first communication unit configured to negotiate the first information with the SN or transmit the first information to the SN, where the first information includes the information related to the setting upper limit of the candidate PSCell that can be set for the terminal. The embodiments of the present application further provide a communication device, which is set in the SN and includes a second communication unit configured to negotiate the first information with the MN or receive the first information transmitted by the MN, where the first information includes the information related to the setting upper limit of the candidate PSCell that can be set for the terminal.

[0024] The embodiments of the present application further provide a communication device, which is set in the SN and includes a second communication unit configured to negotiate the first information with the MN or receive the first information transmitted by the MN, where the first information includes the information related to the setting upper limit of the candidate PSCell that can be set for the terminal. The embodiments of the present application further provide a communication device, which is set in the SN and includes a second communication unit configured to negotiate the first information with the MN or receive the first information transmitted by the MN, where the first information includes the information related to the setting upper limit of the candidate PSCell that can be set for the terminal.

[0025] An embodiment of the present application further provides a communication device, configured in a terminal, and a third communication unit configured to receive second information transmitted by the MN and / or the SN, the second information characterizing an association relationship between a candidate PCell and a candidate PSCell.

[0026] An embodiment of the present application further provides a MN, including a first communication interface and a first processor; The first communication interface is configured to negotiate first information with an SN or transmit first information to an SN, the first information including configuration upper limit related information of a candidate PSCell configurable for the terminal.

[0027] An embodiment of the present application further provides a SN, including a second communication interface and a second processor; The second communication interface is configured to negotiate first information with an MN or receive first information transmitted by an MN, the first information including configuration upper limit related information of a candidate PSCell configurable for the terminal.

[0028] An embodiment of the present application further provides a terminal, comprising: a third communication interface and a third processor; The third communication interface is configured to receive second information transmitted by a MN and / or a SN, the second information characterizing an association relationship between a candidate PCell and a candidate PSCell.

[0029] An embodiment of the present application further provides a MN, comprising: a first processor and a first memory configured to store a computer program executable by the processor; The first processor is configured to perform the steps of any of the above MN-side methods when the computer program is executed.

[0030] The embodiments of the present application further provide an SN, and include a second processor and a second memory configured to store a computer program executable by the processor. When the computer program is executed, the second processor is configured to execute steps of any of the methods on the SN side described above.

[0031] The embodiments of the present application further provide a terminal, and include a third processor and a third memory configured to store a computer program executable by the processor. When the computer program is executed, the third processor is configured to execute steps of any of the methods on the terminal side described above.

[0032] The embodiments of the present application further provide a storage medium storing a computer program, and when the computer program is executed by a processor, it realizes steps of any of the methods on the MN side described above, or realizes steps of any of the methods on the SN side described above, or realizes steps of any of the methods on the terminal side described above.

[0033] In the communication method, apparatus, related device, and storage medium provided by the embodiments of the present application, the MN negotiates with the SN or transmits first information to the SN, the SN negotiates with the MN or receives the first information transmitted by the MN, and the first information includes setting upper limit related information of candidate PSCs that can be set for the terminal. The solution provided by the embodiments of the present application enables the MN to negotiate with the SN or directly notify the SN of the setting upper limit related information of candidate PSCs that can be set for the terminal, so that the measurement corresponding to the CHO of the terminal's PCell and the total correlation setting of the CPA or CPC of the PSCell does not exceed the maximum measurement capability of the terminal. From the perspective of the terminal, CHO and CPA / CPC are considered simultaneously.

Brief Description of the Drawings

[0034]

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Embodiments for Carrying Out the Invention

[0035] Hereinafter, the present application will be described in more detail by combining the drawings and embodiments.

[0036] In a multi-connection (for example, dual-connection) scenario, the related art does not support setting the CHO of the PCell and the CPC or CPA of the PSCell for the terminal at the same time. In other words, from the perspective of the terminal, the terminal cannot consider the CHO and the CPA / CPC at the same time.

[0037] In various implementation manners of the present application, an operation mechanism for simultaneously setting the CHO of the PCell and the CPC / CPA of the PSCell is provided for the terminal. Specifically, the MN negotiates with the SN the information related to the setting upper limit of the candidate PSCell that can be set for the terminal by the SN, or the MN directly notifies the SN of the information related to the setting upper limit of the candidate PSCell that can be set for the terminal by the SN, so that the measurement corresponding to the total correlation setting of the CHO of the PCell and the CPA or CPC of the PSCell of the terminal does not exceed the maximum measurement capability of the terminal. From the perspective of the terminal, the CHO and the CPA / CPC are considered simultaneously.

[0038] The embodiment of the present application provides a communication method, which is applied to the MN, including the step of negotiating with the SN for the first information or transmitting the first information to the SN, where the first information includes the information related to the setting upper limit of the candidate PSCell that can be set for the terminal.

[0039] When actually applied, the first information may include the information related to the setting upper limit of the candidate PSCell that can be set for the terminal by the SN.

[0040] When actually applied, the terminal may be called a UE or a user.

[0041] When actually applied, the specific implementation method for the MN to negotiate the first information with the SN can be set as needed, and the implementation method of this application is not limited thereto. Exemplarily, the MN can directly send the first information to the SN, and after the SN receives the first information, it can return a confirmation message. Or, the MN sends the setting upper limit related information of the candidate PSCell that can be set for the terminal to the SN once, and the SN needs to adjust some or all of the received setting upper limit related information. At this time, the SN sends an adjustment request to the MN to adjust some or all of the received setting upper limit related information. The adjustment request can carry several pieces of information that the SN hopes to set for the terminal, such as the number of candidate PSCs that the SN hopes to set for the terminal, the number of candidate frequency points, the number of candidate measurement identifiers (which can be expressed as measurement identities in English), the number of candidate PSCs at each candidate frequency point, and the number of CPCs. Next, after the MN receives the adjustment request sent by the SN, it can send the adjusted setting upper limit related information (i.e., the maximum number) of the candidate PSCell that can be set by the SN to the SN. Here, when actually applied, the maximum number after the MN adjustment may or may not match the number of SN requested adjustments (i.e., be the same), which mainly depends on the specific implementation of the MN. Or, the SN can notify the MN that it has already started the CPC setting flow started by the SN, and / or the SN can notify the MN of the setting information of the candidate PSCell set by the SN for the terminal (subsequently described as the fourth information). Then, the MN then sends the first information to the SN. The fourth information is The number of candidate PSCs, The number of candidate frequency points, The number of candidate measurement identifiers, The number of candidate PSCs at each candidate frequency point, and The number of CPCs, and can include at least one of them.

[0042] When actually applied, the fact that the MN transmits the first information to the SN can be understood as the MN directly notifying the SN of the first information, that is, the MN can directly instruct the SN on the upper limit of the number of candidate PSCs that can be set for the terminal.

[0043] Here, before the MN transmits the first information to the SN, the SN can further notify the MN of the configuration information of the candidate PSCs previously configured by the SN for the terminal, that is, the MN receives the fourth information transmitted by the SN, and the fourth information includes the configuration information of the candidate PSCs configured by the SN for the terminal. Then, the MN then transmits the first information to the SN, and the fourth information can include at least one of the number of candidate PSCs, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate PSCs at each candidate frequency point, and the number of CPCs.

[0044] When actually applied, the setting upper limit of the candidate PSCell that can be set for the terminal by the SN can depend on the measurement capability of the terminal and the settings of CHO and CPA / CPC. In other words, the MN and / or the SN can determine the setting upper limit of the candidate PSCell that can be set for the terminal based on the measurement capability reported by the terminal to the network side or the predefined UE capability and the CHO and CPA / CPC set by the MN for the terminal, that is, determine the first information, so that the measurement corresponding to the total correlation setting of the candidate PCell and the candidate PSCell does not exceed the total measurement capability of the terminal (i.e., the maximum measurement capability of the terminal). Here, the related setting of the candidate PCell can also be understood as the related setting of the master cell group (MCG) or the MN, the related setting of the candidate PSCell can also be understood as the related setting of the secondary cell group (SCG) or the SN, and the total correlation setting of the candidate PCell and the candidate PSCell can also be understood as the total correlation setting of the CHO of the PCell and the CPA or CPC of the PSCell.

[0045] In one embodiment, the first information is the maximum number of candidate PSCs, the maximum number of candidate frequency points, the maximum number of candidate measurement identifiers, the maximum number of candidate PSCs at each candidate frequency point, and can include at least one of the maximum number of CPCs.

[0046] When actually applied, the MN and the SN can communicate via the Xn interface, that is, the MN and the SN can negotiate the first information via the Xn interface, or the MN can send the first information to the SN via the Xn interface.

[0047] In one embodiment, the method further It can include the step of transmitting second information to the terminal, and the second information characterizes the association relationship between a candidate PCell and a candidate PSCell.

[0048] In actual application, the MN can transmit the second information to the terminal via radio resource control (RRC) reconfiguration signaling.

[0049] In some scenarios, the three of MN, MCG, and Pcell are equivalent. Accordingly, the three of SN, SCG, and PSCell are equivalent. Therefore, the second information can have various expression forms. For example, the association relationship between a candidate PCell and a candidate PSCell, the association relationship between a candidate PCell and a candidate SN, the association relationship between a candidate PCell and a candidate SCG, the association relationship between a candidate MN and a candidate PSCell, the association relationship between a candidate MN and a candidate SN, the association relationship between a candidate MN and a candidate SCG, the association relationship between a candidate MCG and a candidate PSCell, the association relationship between a candidate MCG and a candidate SN, It may be any one of the association relationships between a candidate MCG and a candidate SCG.

[0050] Note that the embodiments of the present application are not limited to the expression form of the second information, as long as its function can be realized. Exemplarily, the second information can include MCG 1 / PCell 1 / MN 1 and SCG 1 / PSCell 1 / SN 1 and SCG 2 / PSCell 2 / SN 2, and there is an association relationship.

[0051] When actually applied, the association relationship characterized by the second information can be used for performing multi-connection (including multi-connections such as dual-connection and triple-connection). Exemplarily, the second information can include MCG 1 / PCell 1 / MN 1 and SCG 1 / PSCell 1 / SN 1, and SCG 2 / PSCell 2 / SN 2, and can perform dual-connection.

[0052] When actually applied, since the association relationship characterized by the second information can help the terminal to consider CHO and CPA / CPC simultaneously, when the MN sends the relevant setting information of CHO and / or CPA / CPC (referred to as the third information in the following description) to the terminal, the MN can send the second information to the terminal.

[0053] In one embodiment, the step of sending the second information to the terminal is When sending the third information to the terminal, the step of sending the second information to the terminal can be included, and the third information is CHO setting information in the multi-connection of the terminal, and at least one of the setting information of CPA or CPC.

[0054] When actually applied, after sending the third information to the terminal, the MN can also send the second information to the terminal.

[0055] In one embodiment, the step of sending the second information to the terminal is After sending the third information to the terminal, the step of sending the second information to the terminal can be included.

[0056] When actually applied and when transmitting the second information to the terminal, since the terminal can know the association relationship between the candidate PCell and the candidate PSCell, when the SN determines the setting upper limit of the candidate PSCell that can be set for the terminal, there is no need to consider the association settings of other candidate PSCs except for the candidate PSCs associated with the candidate PCell. It only needs to be considered that the measurement corresponding to the total correlation setting of the candidate PCell and the candidate PSCs associated with the candidate PCell does not exceed the maximum measurement capability of the terminal. In other words, it is not necessary to consider that the measurement corresponding to the total correlation setting of all candidate PCells and all candidate PSCs does not exceed the maximum measurement capability of the terminal.

[0057] Here, it can be understood that when the setting upper limit of candidate PSCs that can be set for the terminal by the SN is determined, if the second information is not transmitted to the terminal, it is necessary to consider that the measurement corresponding to the total correlation setting of all candidate PCells and all candidate PSCs does not exceed the maximum measurement capability of the terminal. When the second information is transmitted to the terminal, it is only necessary to consider that the measurement corresponding to the total correlation setting of the candidate PCell and the candidate PSCs related to the candidate PCell does not exceed the maximum measurement capability of the terminal. Therefore, in the scenario where the second information is transmitted to the terminal, the total number of candidate PCells and candidate PSCs that can be set for the terminal by the network side is larger than the total number of candidate PCells and candidate PSCs that can be set for the terminal by the network side in the scenario where the second information is not transmitted to the terminal. In other words, when the second information is transmitted to the terminal, the network side can set more candidate PCells and candidate PSCs for the terminal, and the robustness of the handover process can be further enhanced.Exemplarily, assume that the network side sets three candidate MCGs (MCG1, MCG2, and MCG3 respectively) CHOs and six candidate SCG CPA / CPCs (one CPC can set at least one candidate PSCell) for the terminal, that is, there is configuration information for three candidate MCG CHOs and six candidate SCG CPA / CPCs for the terminal. When the network side does not set the second information for the terminal, the total cell measurements corresponding to all three candidate MCG CHOs and six candidate SCG CPA / CPCs must not exceed the maximum measurement capability of the terminal. When the network side sets the second information for the terminal, assume that there is a relationship between MCG1 and SCG1, SCG2, that there is a relationship between MCG2 and SCG3, SCG4, and that there is a relationship between MCG3 and SCG5, SCG6. Then, the total cell measurements corresponding to MCG1 CHO, SCG1 CPA / CPC, and SCG2 CPA / CPC do not have to exceed the maximum measurement capability of the terminal. Accordingly, the total cell measurements corresponding to MCG2 CHO, SCG3 CPA / CPC, and SCG4 CPA / CPC do not have to exceed the maximum measurement capability of the terminal, and the total cell measurements corresponding to MCG3 CHO, SCG5 CPA / CPC, and SCG6 CPA / CPC do not have to exceed the maximum measurement capability of the terminal.

[0058] Accordingly, the embodiments of the present application further provide a communication method, which is applied to an SN, including the step of negotiating with the MN for the first information or receiving the first information transmitted by the MN, where the first information includes information related to the setting upper limit of candidate PSCells that can be set for the terminal.

[0059] In actual application, as described above, the MN can transmit the second information to the terminal, and the SN can also transmit the second information to the terminal.

[0060] In one embodiment, the method further includes The step of transmitting second information to the terminal may be included, and the second information characterizes the association relationship between a candidate PCell and a candidate PSCell.

[0061] In actual application, the MN or SN can determine the association relationship between the candidate PCell and the candidate PSCell based on the historical situation of performing multi-connection, and the network management device can also notify the MN and / or SN, so that the MN and / or SN can obtain the association relationship between the candidate PCell and the candidate PSCell. The embodiments of the present application are not limited thereto.

[0062] In actual application, the SN can transmit second information to the terminal via RRC reconfiguration signaling.

[0063] In actual application, in the process where the SN negotiates the first information with the MN or before the SN receives the first information transmitted by the MN, the SN can first notify the MN of the configuration information of the candidate PSCell set by the SN for the terminal, that is, the SN transmits fourth information to the MN, and the fourth information includes the configuration information of the candidate PSCell set by the SN for the terminal. Then, the MN then transmits the first information to the SN, and the fourth information includes the number of candidate PSCs, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate PSCs at each candidate frequency point, and It can include at least one of the number of CPCs.

[0064] In actual application, the second information can help the terminal consider CHO and CPA / CPC simultaneously. Therefore, when the SN transmits the configuration information of CPC to the terminal, the second information can be transmitted to the terminal.

[0065] In one embodiment, the step of transmitting second information to the terminal is When transmitting the fifth information to the terminal, it may include the step of transmitting the second information to the terminal, and the fifth information includes the configuration information of the CPC.

[0066] Here, still, the fifth information may be the one transmitted to the terminal before the SN negotiates the first information with the MN or receives the first information transmitted by the MN, or may be the one transmitted to the terminal after the SN negotiates the first information with the MN or receives the first information transmitted by the MN. In other words, the fifth information refers to certain CPC configuration information transmitted by the SN to the terminal, and the content included in the setting information and the fourth information may be the same or different. Specifically, it can be set according to requirements, and the embodiments of the present application are not limited thereto. Exemplarily, after the SN negotiates the first information with the MN or receives the first information transmitted by the MN, the SN can determine the fifth information based on the first information and transmit the fifth information to the terminal.

[0067] In actual application, after transmitting the fifth information to the terminal, the SN may transmit the second information to the terminal.

[0068] In one embodiment, the step of transmitting the second information to the terminal is It may include the step of transmitting the second information to the terminal after transmitting the fifth information to the terminal.

[0069] Accordingly, the embodiments of the present application further provide a communication method, which is applied to a terminal and includes the step of receiving the second information transmitted by the MN and / or the SN, and the second information characterizes the association relationship between the candidate PCell and the candidate PSCell.

[0070] In one embodiment, the step of receiving the second information transmitted by the MN is When receiving the third information transmitted by the MN, receiving the second information transmitted by the MN, or including the step of receiving the second information transmitted by the MN after receiving the third information transmitted by the MN, the third information is CHO setting information in the multi-connection of the terminal, and including at least one of the setting information of CPA or CPC.

[0071] In one embodiment, the step of receiving the second information transmitted by the SN is When receiving the fifth information transmitted by the SN, receiving the second information transmitted by the SN, or including the step of receiving the second information transmitted by the SN after receiving the fifth information transmitted by the SN, the fifth information includes CPC setting information.

[0072] After receiving the second piece of information, in a scenario where CHO of the PCell occurs (i.e., when CHO of the PCell is triggered), the terminal can preferentially evaluate appropriate candidate PSCs based on the second piece of information, that is, can preferentially measure the candidates of PSCs related to the candidate PCell, saving the time for the terminal to evaluate the candidate PSCs and improving the speed of performing dual connection after CHO is completed (since the measurement results of the PSCs have already been obtained). Further, the terminal cannot measure the candidates of PSCs not related to the candidate PCell, further saving the measurement behavior of the terminal (i.e., saving the time for the terminal to evaluate the candidate PSCs) and reducing the energy consumption of the terminal during CHO. Exemplarily, when CHO of the PCell is triggered, assuming that candidate PCell 1 (belonging to MN 1) meets the conditions of CHO, during or after the process of performing CHO, the UE preferentially measures PSCell 1 or SCG1 (belonging to SN 1), PSCell 2 or SCG 2 (belonging to SN 2) that has a relationship with PCell 1, and subsequently performs preparatory work for MN 1 to establish a new dual connection with SN 1 or SN 2, improving the working efficiency of the UE, saving the time for the new MN to search for the SN, and providing the dual connection service to the UE as soon as possible. Also, the UE cannot measure the SCG not related to PCell 1, saving the measurement behavior of the UE.

[0073] After receiving the second piece of information, in a scenario where the CPC of the PSCell and the CHO of the PCell are triggered simultaneously (which can also be understood as a case), or in a scenario where the CPA and the CHO of the PCell are triggered simultaneously, the terminal preferentially performs the CHO of the PCell based on the second piece of information, and can interrupt the current CPA or CPC flow (for example, without evaluating candidate PSCs, or without starting random access to the target PSCell, or without starting a radio resource control (RRC) connection start process to the target PSCell, etc.), and can avoid the situation where a new PCell cannot be multi-connected after the addition or change of the PSCell is successful, that is, avoid invalid operations in the PSCell of the terminal, and can improve the success rate of the addition or change of the PSCell.

[0074] Here, when the CPC / CPA of the PSCell and the CHO of the PCell are triggered simultaneously, it can include that when the CPA or CPC is triggered, that is, when the CPA or CPC occurs but is not successful, the terminal triggers the CHO of the PCell. At this time, the terminal can determine, based on the second piece of information, that there is no correlation between the candidate target PCell and the current target PSCell of the CPA or CPC. The terminal can preferentially perform the CHO of the PCell and interrupt the current CPA or CPC flow, and can avoid the situation where a new PCell or MN cannot be multi-connected after the addition or change of the PSCell is successful.

[0075] After receiving the second piece of information, in a scenario where a failure occurs in the CHO of the PCell and one candidate PCell is selected, the measurement of the candidate PSCell related to the selected candidate PCell is preferentially performed. That is, when a failure occurs in the CHO of the PCell and the first candidate PCell is selected, the measurement of the candidate PSCell related to the first candidate PCell is preferentially performed. Exemplarily, when a failure occurs in the CHO of the PCell, the UE performs cell selection. Assuming that the selected cell PCell 2 is a CHO candidate cell of the PCell, the UE uses the CHO configuration information to initiate an RRC connection with PCell 2 and preferentially measures the candidate PSCell 2 or SCG2 capable of performing a dual connection with PCell 2, and reports the measurement result to the MN 2 where PCell 2 exists, so that the MN 2 can accelerate the additional preparation process for performing the PSCell 2 or SCG 2 or SN 2 dual connection.

[0076] Note that in the embodiments of the present application, CPA / CPC represents CPA or CPC.

[0077] Accordingly, the embodiments of the present application further provide a communication method. As shown in FIG. 2, the method includes the following steps: Step 201: The MN negotiates with the SN for the first piece of information or transmits the first piece of information to the SN, and the first piece of information includes information related to the set upper limit of the candidate PSCell that can be set for the terminal. Step 202: The SN negotiates with the MN for the first piece of information or receives the first piece of information transmitted by the MN.

[0078] The communication method provided by the embodiments of the present application is such that the MN negotiates the first information with the SN, or transmits the first information to the SN. The SN negotiates the first information with the MN, or receives the first information transmitted by the MN. The first information includes information related to the setting upper limit of candidate PSCs that can be set for the terminal. The solution provided by the embodiments of the present application is that, because the MN negotiates with the SN the information related to the setting upper limit of candidate PSCs that can be set for the terminal by the SN, or the MN directly notifies the SN of the information related to the setting upper limit of candidate PSCs that can be set for the terminal, the measurement corresponding to the total correlation setting of the CHO of the terminal's PCell and the CPA or CPC of the PSCell can be made not to exceed the maximum measurement capability of the terminal. From the perspective of the terminal, CHO and CPA / CPC are considered simultaneously.

[0079] Moreover, the solution provided by the embodiments of the present application can help the terminal to preferentially evaluate appropriate candidate PSCs when the CHO of the PCell occurs by the MN and / or the SN transmitting the second information characterizing the relationship between the candidate PCell and the candidate PSCell to the terminal, save the time for the terminal to evaluate the candidate PSCs, and improve the speed of performing dual connection after the completion of CHO.

[0080] The solution provided by the embodiments of the present application is that if the CHO of the PCell is triggered before the CPA or CPC occurs but fails, and the terminal can determine based on the second information that there is no relationship between the candidate target PCell and the current target PSCell of the CPA or CPC, the terminal can preferentially perform the CHO of the PCell, avoid being unable to perform dual connection with the new PCell after the addition or change of the PSCell is successful, that is, avoid invalid operations in the PSCell of the terminal, and improve the success rate of the addition or change of the PSCell.

[0081] To implement the method on the MN side in the embodiments of the present application, the embodiments of the present application further provide a communication device, which is configured on the MN. As shown in FIG. 3, the device includes a first communication unit 301, The first communication unit 301 is configured to negotiate with the SN for the first information or transmit the first information to the SN, and the first information includes information related to the setting upper limit of the candidate PSCell that can be set for the terminal.

[0082] In one embodiment, as shown in FIG. 3, the device may further include a fourth communication unit 302, and the fourth communication unit 302 is configured to transmit second information to the terminal, and the second information characterizes the association relationship between the candidate PCell and the candidate PSCell.

[0083] In one embodiment, when the fourth communication unit 302 further transmits third information to the terminal, it is configured to transmit the second information to the terminal, or transmit the second information to the terminal after transmitting the third information to the terminal, and the third information includes CHO setting information in the multi-connection of the terminal, and at least one of the setting information of CPA or CPC.

[0084] In one embodiment, the first communication unit 301 is further configured to receive fourth information transmitted by the SN, and the fourth information includes the setting information of the candidate PSCell set by the SN for the terminal, and the fourth information includes the number of candidate PSCs, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate PSCs at each candidate frequency point, and at least one of the number of CPCs.

[0085] In actual application, the first communication unit 301 and the fourth communication unit 302 can be implemented by a communication interface in the communication device.

[0086] To implement the method on the SN side in the embodiments of the present application, the embodiments of the present application further provide a communication device, which is set on the SN. As shown in FIG. 4, the device includes a second communication unit 401. The second communication unit 401 is configured to negotiate the first information with the MN or receive the first information sent by the MN. The first information includes the setting upper limit related information of the candidate PSCell that can be set for the terminal.

[0087] In one embodiment, as shown in FIG. 4, the device may further include a fifth communication unit 402. The fifth communication unit 402 is configured to send the second information to the terminal. The second information characterizes the association relationship between the candidate PCell and the candidate PSCell.

[0088] In one embodiment, when the fifth communication unit 402 further sends the fifth information to the terminal, the fifth communication unit 402 is configured to send the second information to the terminal or send the second information to the terminal after sending the fifth information to the terminal. The fifth information includes the setting information of the CPC.

[0089] In one embodiment, the second communication unit 401 is further configured to send the fourth information to the MN. The fourth information includes the setting information of the candidate PSCell set by the SN for the terminal. The fourth information includes the number of candidate PSCs, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate PSCs at each candidate frequency point, and the number of CPCs, and includes at least one of them.

[0090] In actual application, the second communication unit 401 and the fifth communication unit 402 can be implemented by a communication interface in the communication device.

[0091] To implement the method on the terminal side in the embodiments of this application, the embodiments of this application further provide a communication device, which is configured on the terminal. As shown in FIG. 5, the device includes a third communication unit 501, The third communication unit 501 is configured to receive second information transmitted by the MN and / or the SN, where the second information characterizes the association relationship between the candidate PCell and the candidate PSCell.

[0092] In one embodiment, when the third communication unit 501 further receives third information transmitted by the MN, the third communication unit 501 is configured to receive the second information transmitted by the MN, or receive the second information transmitted by the MN after receiving the third information transmitted by the MN. The third information includes CHO configuration information in the multi-connection of the terminal, and at least one of the configuration information of CPA or CPC.

[0093] In one embodiment, when the third communication unit 501 further receives fifth information transmitted by the SN, the third communication unit 501 is configured to receive the second information transmitted by the SN, or receive the second information transmitted by the SN after receiving the fifth information transmitted by the SN. The fifth information includes CPC configuration information.

[0094] In one embodiment, as shown in FIG. 5, the device may further include a measurement unit 502. When the CHO of the PCell is triggered, the measurement unit 502 is configured to preferentially measure the candidate PSCell associated with the candidate PCell.

[0095] In one embodiment, the measurement unit 502 is further configured not to measure the candidate PSCell not associated with the candidate PCell.

[0096] In one embodiment, as shown in FIG. 5, the apparatus may further include a switching unit 503, and the switching unit 503 is configured to preferentially perform the CHO of the PCell when the CHO of the CPC or CPA and the PCell are triggered simultaneously.

[0097] In one embodiment, when a failure occurs in the CHO of the PCell and a first candidate PCell is selected, the measurement unit 502 is further configured to preferentially perform the measurement of the candidate PSCell related to the first candidate PCell.

[0098] In actual application, the third communication unit 501 can be implemented by a communication interface in the communication device, and the measurement unit 502 and the switching unit 503 can be implemented by a processor in the communication device in combination with the communication interface.

[0099] It should be noted that, when the communication device provided by the above embodiments communicates, only the division of the above program modules is taken as an example for description. However, in actual application, the above processing allocation can be completed by different program modules as required, that is, the internal structure of the device can be divided into different program modules to complete all or part of the above-described processing. In addition, the embodiments of the communication device and the communication method provided by the above embodiments belong to the same concept, and the specific implementation process refers to the method embodiments and will not be described herein again.

[0100] Based on the hardware of the above program module to implement, in order to implement the method on the MN side of the embodiments of the present application, the embodiments of the present application further provide an MN. As shown in FIG. 6, the MN 600 includes a first communication interface 601, a first processor 602, and a first memory 603. The first communication interface 601 can perform information interaction with a terminal and / or other nodes on the network side (for example, an SN). The first processor 602 is connected to the first communication interface 601 to implement terminal and / or other node information interaction on the network side. When a computer program is executed, it is configured to execute the method provided by one or more technical solutions on the MN side as described above. The first memory 603 stores the computer program.

[0101] Specifically, the first communication interface 601 is configured to negotiate the first information with the SN or transmit the first information to the SN. The first information includes information related to the set upper limit of candidate PSCs that can be set for the terminal.

[0102] In one embodiment, the first communication interface 601 is further configured to transmit second information to the terminal. The second information characterizes the relationship between the candidate PCell and the candidate PSCell.

[0103] In one embodiment, when the first communication interface 601 further transmits third information to the terminal, it is configured to transmit the second information to the terminal before transmitting the third information to the terminal, or transmit the second information to the terminal after transmitting the third information to the terminal. The third information includes CHO setting information in the multi-connection of the terminal, and at least one of the CPA or CPC setting information.

[0104] In one embodiment, the first communication interface 601 is further configured to receive fourth information transmitted by the SN. The fourth information includes the setting information of the candidate PSCell set by the SN for the terminal. The fourth information includes the number of candidate PSCs, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate PSCs at each candidate frequency point, and at least one of the number of CPCs.

[0105] Note that the specific processing process of the first communication interface 601 can be understood by referring to the above method, and will not be described further here.

[0106] Of course, in actual application, each component in the MN600 is coupled via the bus system 604. It can be understood that the bus system 604 is used to realize the connection communication between these components. The bus system 604 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clear description, in FIG. 6, various buses are denoted as the bus system 604.

[0107] The first memory 603 in the embodiment of the present application is configured to store various types of data to support the operation of the MN600. Examples of these data include any computer program for operating on the MN600.

[0108] The method disclosed by the above-described embodiments of the present application can be applied to the first processor 602 or can be implemented by the first processor 602. The first processor 602 may be an integrated circuit chip having signal processing capabilities. In the implementation process, each step of the above-described method can be executed by the integrated logic circuit of the hardware in the first processor 602 or by instructions in the form of software. The above-described first processor 602 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The first processor 602 can implement or execute the method, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be combined to be directly embodied as the completion of the execution of the hardware decoding processor or the combined execution completion of the hardware and software modules in the decoding processor. The software module can be located in a storage medium, and the storage medium is located in the first memory 603. The first processor 602 reads the information in the first memory 603 and combines its hardware to complete the steps of the above-described method.

[0109] In an exemplary embodiment, MN600 is implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components, and is used to execute the foregoing method.

[0110] Based on the hardware of the foregoing program modules and to implement the method on the SN side of the embodiments of the present application, the embodiments of the present application further provide an SN. As shown in FIG. 7, the SN700 includes a second communication interface 701, a second processor 702, and a second memory 703. The second communication interface 701 can perform information interaction with a terminal and / or other nodes on the network side (for example, MN). The second processor 702 is connected to the second communication interface 701 and is configured to perform information interaction with a terminal and / or other nodes on the network side. When a computer program is executed, it is configured to execute the method provided by one or more of the foregoing technical solutions on the SN side. The second memory 703 stores the computer program.

[0111] Specifically, the second communication interface 701 is configured to negotiate the first information with the MN or receive the first information transmitted by the MN. The first information includes information related to the set upper limit of the candidate PSCell that can be set for the terminal.

[0112] In one embodiment, the second communication interface 701 is further configured to transmit second information to the terminal, and the second information characterizes the association relationship between the candidate PCell and the candidate PSCell.

[0113] In one embodiment, when the second communication interface 701 further transmits fifth information to the terminal, the second communication interface 701 is configured to transmit the second information to the terminal, or to transmit the second information to the terminal after transmitting the fifth information to the terminal, and the fifth information includes the configuration information of the CPC.

[0114] In one embodiment, the second communication interface 701 is further configured to perform the step of transmitting fourth information to the MN, and the fourth information includes the configuration information of the candidate PSCell set by the SN700 for the terminal, and the fourth information the number of candidate PSCs, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate PSCs at each candidate frequency point, and includes at least one of the number of CPCs.

[0115] Note that the specific processing process of the second communication interface 701 can be understood by referring to the above method, and will not be described further here.

[0116] Of course, in actual application, each component in the SN700 is coupled via a bus system 704. It can be understood that the bus system 704 is used to realize the connection and communication between these components. The bus system 704 includes a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clear description, in FIG. 7, various buses are denoted as the bus system 704.

[0117] The second memory 703 in the embodiment of the present application is configured to store various types of data to support the operation of the SN700. Examples of these data include any computer program for operating on the SN700.

[0118] The method disclosed by the embodiment of the present application described above can be applied to the second processor 702 or can be realized by the second processor 702. The second processor 702 may be an integrated circuit chip having signal processing capabilities. In the realization process, each step of the above method can be executed by the integrated logic circuit of the hardware in the second processor 702 or instructions in the form of software. The second processor 702 described above may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 702 can realize or execute the method, steps, and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be combined to be directly embodied as the completion of the execution of the hardware decoding processor or the combined execution completion of the hardware and software modules in the decoding processor. The software module can be located in a storage medium, and the storage medium is located in the second memory 703. The second processor 702 reads the information in the second memory 703 and combines its hardware to complete the steps of the above method.

[0119] In an exemplary embodiment, the SN700 can be realized by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Microprocessors, or other electronic components to execute the above method.

[0120] Based on the hardware of the above program module and to implement the method on the terminal side of the embodiments of the present application, the embodiments of the present application further provide a terminal. As shown in FIG. 8, the terminal 800 includes a third communication interface 801, a third processor 802, and a third memory 803. The third communication interface 801 can perform information interaction with other terminals and / or network-side nodes (for example, MN and / or SN). The third processor 802 is connected to the third communication interface 801 to realize information interaction with other terminals and / or network-side nodes. When a computer program is executed, it is configured to execute the method provided by one or more of the above terminal-side technical solutions. The third memory 803 stores the computer program.

[0121] Specifically, the third communication interface 801 is configured to receive the second information transmitted by the MN and / or SN, and the second information characterizes the association relationship between the candidate PCell and the candidate PSCell.

[0122] In one embodiment, when the third communication interface 801 further receives the third information transmitted by the MN, it is configured to receive the second information transmitted by the MN, or to receive the second information transmitted by the MN after receiving the third information transmitted by the MN. The third information includes CHO configuration information in the multi-connection of the terminal 800, and at least one of the configuration information of CPA or CPC.

[0123] In one embodiment, when the third communication interface 801 further receives the fifth information transmitted by the SN, it is configured to receive the second information transmitted by the SN, or to receive the second information transmitted by the SN after receiving the fifth information transmitted by the SN, and the fifth information includes CPC setting information.

[0124] In one embodiment, when the CHO of the PCell is triggered, the third processor 802 is configured to preferentially perform measurements on candidate PSCs related to the candidate PCell.

[0125] In one embodiment, the third processor 802 is further configured not to perform measurements on candidate PSCs not related to the candidate PCell.

[0126] In one embodiment, when the CHO of the PCell and CPC or CPA are triggered simultaneously, the third processor 802 is configured to preferentially perform the CHO of the PCell.

[0127] In one embodiment, when a failure occurs in the CHO of the PCell and the first candidate PCell is selected, the third processor 802 is further configured to preferentially perform measurements on candidate PSCs related to the first candidate PCell.

[0128] Note that the specific processing processes of the third communication interface 801 and the third processor 802 can be understood with reference to the above method, and will not be described further here.

[0129] Of course, when actually applied, each component in the terminal 800 is coupled via the bus system 604. It can be understood that the bus system 804 is used to realize the connection and communication between these components. The bus system 804 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clear description, in FIG. 8, various buses are denoted as the bus system 804.

[0130] The third memory 803 in the embodiment of the present application is configured to store various types of data to support the operation of the terminal 800. Examples of these data include any computer program for operating on the terminal 800.

[0131] The method disclosed by the above-described embodiment of the present application can be applied to the third processor 802 or can be realized by the third processor 802. The third processor 802 may be an integrated circuit chip having signal processing capabilities. In the realization process, each step of the above-described method can be executed by the integrated logic circuit of the hardware in the third processor 802 or by the instructions in the form of software. The above-described third processor 802 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The third processor 802 can realize or execute the method, steps, and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be combined to be directly embodied as the completion of the execution of the hardware decoding processor or the combined execution completion of the hardware and software modules in the decoding processor. The software module can be located in the storage medium, and the storage medium is located in the third memory 803. The third processor 802 reads the information in the third memory 803 and combines its hardware to complete the steps of the above-described method.

[0132] In an exemplary embodiment, the terminal 800 can be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Micropocessors, or other electronic components to execute the foregoing method.

[0133] It can be understood that the memories (the first memory 603, the second memory 703, and the third memory 803) of the embodiments of the present application may be volatile memories or non-volatile memories, or may include both volatile and non-volatile memories. Here, the non-volatile memory may be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), a ferromagnetic random access memory (FRAM (registered trademark), ferromagnetic random access memory), a flash memory (Flash Memory), a magnetic surface memory, an optical disk, or a read-only optical disk (CD-ROM, Compact Disc Read-Only Memory). The magnetic surface memory may be a magnetic disk memory or a magnetic tape memory. The volatile memory may be a random access memory (RAM, Random Access Memory) used as an external cache. By way of example and not limitation, many forms of RAM are available.For example, it may be a static random access memory (SRAM), a synchronous static random access memory (SSRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a sync link dynamic random access memory (SLDRAM), or a direct rambus random access memory (DRRAM). The memory described in the embodiments of this specification is intended to include these and any other suitable types of memory, but is not limited thereto.

[0134] To implement the method provided by the embodiments of this application, the embodiments of this application further provide a communication system. As shown in FIG. 9, the system includes an MN901, an SN902, and a terminal 903.

[0135] Note that the specific processing processes of the MN901, SN902, and terminal 903 are as described above and will not be further described herein.

[0136] In an exemplary embodiment, the embodiments of the present application further provide a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium. For example, it includes a first memory 603 in which a computer program is stored. The above computer program can be executed by a first processor 602 of the MN600 to complete the steps of the above-described method on the MN side. Further, for example, it includes a second memory 703 in which a computer program is stored. The above computer program can be executed by a second processor 702 of the SN 700 to complete the steps of the above-described method on the SN side. Further, for example, it includes a third memory 803 in which a computer program is stored. The above computer program can be executed by a third processor 802 of the terminal 800 to complete the steps of the above-described method on the terminal side. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

[0137] It should be noted that "first", "second", etc. are not necessary to describe a specific order or priority, but are for distinguishing similar objects.

[0138] Also, the technical solutions described in the embodiments of the present application can be arbitrarily combined when they do not conflict with each other.

[0139] The above are only preferred embodiments of the present application and are not intended to limit the protection scope of the present application.

Claims

1. A communication method applied to a master node, comprising the step of negotiating first information with a secondary node or transmitting the first information to the secondary node, wherein the first information includes setting upper limit related information of candidate primary secondary cells that can be set for a terminal.

2. The communication method according to claim 1, wherein the first information includes at least one of: the maximum number of candidate primary secondary cells, the maximum number of candidate frequency points, the maximum number of candidate measurement identifiers, the maximum number of candidate primary secondary cells at each candidate frequency point, and the maximum number of changes of conditional primary secondary cells.

3. The communication method according to claim 1, further comprising the step of transmitting second information to the terminal, wherein the second information characterizes the relationship between a candidate primary cell and a candidate primary secondary cell.

4. The step of transmitting second information to the terminal includes: when transmitting third information to the terminal, transmitting the second information to the terminal, or transmitting the second information to the terminal after transmitting the third information to the terminal, wherein the third information includes at least one of: conditional switching setting information in multi-connection of the terminal, and setting information for adding or changing conditional primary secondary cells.

5. The communication method according to claim 1 to 4, further comprising the step of receiving fourth information transmitted by the secondary node, wherein the fourth information includes setting information of candidate primary secondary cells set by the secondary node for the terminal, and the fourth information includes at least one of: the number of candidate primary secondary cells, the number of candidate frequency points, the number of candidate measurement identifiers, the number of candidate primary secondary cells at each candidate frequency point, and the number of changes of conditional primary secondary cells.

6. A communication method applied to a secondary node, comprising the step of negotiating first information with a master node or receiving the first information transmitted by the master node, wherein the first information includes setting upper limit related information of candidate primary secondary cells that can be set for a terminal.

7. The first information includes: the maximum number of candidate primary secondary cells ​ ​ ​ ​ ​ The maximum number of candidate frequency points, The maximum number of candidate measurement identifiers, The maximum number of candidate primary-secondary cells at each candidate frequency point, and The communication method according to claim 6, including at least one of the maximum number of changes of conditional primary-secondary cells.

8. The communication method further includes The step of transmitting second information to the terminal, where the second information characterizes the relationship between the candidate primary cell and the candidate primary-secondary cell, according to claim 6 of the communication method.

9. The step of transmitting second information to the terminal includes When transmitting fifth information to the terminal, transmitting the second information to the terminal, or, after transmitting the fifth information to the terminal, transmitting the second information to the terminal, where the fifth information includes the setting information of the change of the conditional primary-secondary cell, according to claim 8 of the communication method.

10. The communication method further includes The step of transmitting fourth information to the master node, where the fourth information includes the setting information of the candidate primary-secondary cell set by the secondary node for the terminal, and the fourth information includes The number of candidate primary-secondary cells, The number of candidate frequency points, The number of candidate measurement identifiers, The number of candidate primary-secondary cells at each candidate frequency point, and The communication method according to any one of claims 6 to 9, including at least one of the number of changes of conditional primary-secondary cells.

11. A communication method applied to a terminal, including The step of receiving second information transmitted by the master node and / or the secondary node, where the second information characterizes the relationship between the candidate primary cell and the candidate primary-secondary cell.

12. The step of receiving the second information transmitted by the master node includes When receiving third information transmitted by the master node, receiving the second information transmitted by the master node, or, after receiving the third information transmitted by the master node, receiving the second information transmitted by the master node, where the third information includes The conditional switching setting information in the multi-connection of the terminal, and The communication method according to claim 11, comprising at least one of setting information for adding a conditional primary secondary cell or changing a conditional primary secondary cell.

13. The step of receiving the second information transmitted by the secondary node is When receiving the fifth information transmitted by the secondary node, receiving the second information transmitted by the secondary node, or after receiving the fifth information transmitted by the secondary node, receiving the second information transmitted by the secondary node, the fifth information includes setting information for changing a conditional primary secondary cell. The communication method according to claim 11.

14. The communication method is When the conditional switching of the primary cell is triggered, further comprising the step of preferentially measuring candidate primary secondary cells related to candidate primary cells. The communication method according to any one of claims 11 to 13.

15. The communication method is Further comprising the step of not measuring candidate primary secondary cells not related to the candidate primary cell. The communication method according to claim 14.

16. The communication method is When the change or addition of the conditional primary secondary cell and the conditional switching of the primary cell are simultaneously triggered, further comprising the step of preferentially performing the conditional switching of the primary cell. The communication method according to any one of claims 11 to 13.

17. The communication method is When a failure occurs in the conditional switching of the primary cell and a first candidate primary cell is selected, further comprising the step of preferentially measuring candidate primary secondary cells related to the first candidate primary cell. The communication method according to any one of claims 11 to 13.

18. A communication device, comprising A first communication unit configured to negotiate with a secondary node for the first information or transmit the first information to the secondary node, the first information including setting upper limit related information of candidate primary secondary cells that can be set for a terminal.

19. A communication device, A communication device including a second communication unit configured to negotiate with a master node for first information or receive the first information transmitted by the master node, wherein the first information includes setting upper limit related information of candidate primary secondary cells that can be set for a terminal.

20. A communication device, comprising: a third communication unit configured to receive second information transmitted by a master node and / or a secondary node, wherein the second information characterizes the relationship between a candidate primary cell and a candidate primary secondary cell.

21. A master node, comprising: a first communication interface and a first processor, wherein the first communication interface is configured to negotiate first information with a secondary node or transmit the first information to the secondary node, and the first information includes setting upper limit related information of candidate primary secondary cells that can be set for a terminal.

22. A secondary node, comprising: a second communication interface and a second processor, wherein the second communication interface is configured to negotiate first information with a master node or receive the first information transmitted by the master node, and the first information includes setting upper limit related information of candidate primary secondary cells that can be set for a terminal.

23. A terminal, comprising: a third communication interface and a third processor, wherein the third communication interface is configured to receive second information transmitted by a master node and / or a secondary node, and the second information characterizes the relationship between a candidate primary cell and a candidate primary secondary cell.

24. A master node, comprising: a first processor and a first memory configured to store a computer program executable by the processor, wherein the first processor is configured to execute the steps of the method according to any one of claims 1 to 5 when the computer program is executed.

25. A secondary node, comprising: a second processor and a second memory configured to store a computer program executable by the processor, The second processor is configured to execute the steps of the method according to any one of claims 6 to 10 when the computer program is executed, and is a secondary node.

26. A terminal comprising: a third processor and a third memory configured to store a computer program executable by the processor, wherein the third processor is configured to execute the steps of the method according to any one of claims 11 to 17 when the computer program is executed, and is a terminal.

27. A storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are realized, or the steps of the method according to any one of claims 6 to 10 are realized, or the steps of the method according to any one of claims 11 to 17 are realized, and is a storage medium.

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