Cell change method, master node and user equipment

Abstract

The present disclosure relates to the technical field of wireless communications. Provided are a cell change method, a master node and a user equipment. The method comprises: a master node respectively sending secondary node addition request signaling to one or more secondary nodes, wherein the secondary node addition request signaling carries first continuous CPAC indication information; receiving secondary node addition request response signaling, which is fed back by the secondary node, wherein the secondary node addition request response signaling carries second continuous CPAC indication information; and sending radio resource control (RRC) reconfiguration signaling to a user equipment, wherein the RRC reconfiguration signaling carries continuous CPAC configuration information. Thus, the user equipment continuously executes CPAC on the basis of the continuous CPAC configuration information, thereby reducing the signaling overheads and delay of a primary secondary cell (PSCell) change flow in an MR-DC scenario, and improving the user experience.

Description

Cell change method, master node and user equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the application with CN application number 202311013451.4 and application date August 11, 2023, and claims its priority. The disclosed content of the CN application is hereby introduced as a whole into this application. Technical Field

[0003] The present disclosure relates to the technical field of wireless communications, and in particular to a cell change method, a master node, and a user equipment. Background Art

[0004] With the continued advancement of commercial deployment of 5G (5th Generation) mobile communication networks, spectrum resources in low-frequency bands have become saturated, and networks are evolving towards higher-frequency bands. To ensure basic user coverage based on the transmission characteristics of high-frequency millimeter waves, operators will deploy the MR-DC (Multi-Radio Access Technology Dual Connectivity) architecture on a large scale and configure high-frequency cells as secondary cell groups. This approach fully utilizes the coverage characteristics of low frequencies and the capacity characteristics of high frequencies, ensuring network coverage while increasing system capacity. High-frequency cells (such as millimeter wave cells) in the network have a smaller coverage radius. To ensure the user service experience of emerging 5G applications and ensure that the network provides reliable and consistent services to users, it is necessary to enhance the MR-DC scenario and mobility-related mechanisms in the NR (New Radio) system.

[0005] 3GPP introduced the CPAC (Conditional PScell ​​Addition or Change) mechanism, which allows the network to configure multiple candidate PSCells (Primary Secondary Cells) for user equipment (UE). The UE then evaluates the PSCell change execution conditions and directly initiates a random access process to the target PSCell when one or more of the PSCell change execution conditions are met.

[0006] Summary of the Invention

[0007] Some embodiments of the present disclosure provide a cell change method, which is executed by a master node and includes:

[0008] Sending a secondary node addition request signaling to one or more secondary nodes respectively, where the secondary node addition request signaling carries first continuous CPAC indication information;

[0009] receiving a secondary node adding request response signaling fed back by the secondary node, where the secondary node adding request response signaling carries second continuous CPAC indication information;

[0010] A radio resource control (RRC) reconfiguration signaling is sent to the user equipment, where the RRC reconfiguration signaling carries continuous CPAC configuration information.

[0011] In some embodiments, before sending the secondary node addition request signaling to one or more secondary nodes respectively, the method further includes:

[0012] Receive secondary node change requirement signaling sent by the source secondary node, where the secondary node change requirement signaling carries continuous conditional primary and secondary cell CPC change indication information, where the continuous conditional primary and secondary cell CPC change indication information includes at least one of the following information:

[0013] Continuous CPC indication information, indicating that the current request is a continuous CPC request;

[0014] Target secondary node list, including one or more next-generation wireless access network node IDs;

[0015] Candidate PSCell list, including one or more PSCell IDs;

[0016] The maximum number of consecutive CPC executions.

[0017] In some embodiments, the method further includes: sending a secondary node change confirmation signaling to the source secondary node, wherein the secondary node change confirmation signaling carries a candidate PSCell list for accepting the request, specifically including one or more PScell ​​IDs.

[0018] In some embodiments, the first continuous CPAC indication information includes one or more of the following information:

[0019] Continuous CPAC indication information, indicating that the current request is a continuous CPAC request;

[0020] Candidate PSCell list, including one or more PSCell IDs;

[0021] The maximum number of consecutive CPAC executions.

[0022] In some embodiments, the second continuous CPAC indication information includes one or more of the following information:

[0023] Candidate PSCell list, including one or more PSCell IDs;

[0024] The maximum time during which the current secondary node reserves resources for the user equipment.

[0025] In some embodiments, the continuous CPAC configuration information includes one or more of the following information:

[0026] Continuous CPAC indication information, indicating that the current request is a continuous CPAC request;

[0027] The maximum number of consecutive CPAC executions;

[0028] Candidate PSCell list, including one or more PSCell IDs;

[0029] The measurement configuration corresponding to each candidate PSCell;

[0030] The execution conditions corresponding to each candidate PSCell.

[0031] In some embodiments, it further includes:

[0032] Sending a secondary node modification request signaling to the one or more secondary nodes, the secondary node modification request signaling carrying at least one of the following information: continuous CPAC indication information, indicating that the current is a continuous CPAC modification request; a candidate PCell list including one or more PSCell IDs; and a maximum number of consecutive CPAC executions;

[0033] Receive the auxiliary node modification request confirmation signaling fed back by the auxiliary node, and the auxiliary node request confirmation signaling includes at least one of the following information: continuous CPAC indication information, indicating that the current is an indication information of a continuous CPAC modification feedback; a candidate PScell ​​list, including one or more PSCell IDs; the measurement configuration corresponding to each PSCell; and the execution condition corresponding to each PSCell.

[0034] In some embodiments, before sending the secondary node modification request signaling to the one or more secondary nodes, the method further includes:

[0035] Receive a secondary node modification request signaling sent by a source secondary node, where the secondary node modification request signaling includes at least one of the following information: continuous CPC indication information, indicating that the current is a continuous CPC modification request; a maximum number of consecutive CPC executions; and a candidate PSCell list including one or more PSCell IDs;

[0036] After receiving the RRC reconfiguration completion message fed back by the user equipment, a secondary node modification confirmation signaling is sent to the source secondary node, where the secondary node modification confirmation signaling includes a candidate PSCell list.

[0037] In some embodiments, it further includes:

[0038] Send RRC reconfiguration signaling to the user equipment, where the RRC reconfiguration signaling carries at least one of the following information:

[0039] Continuous CPAC indication information, indicating that the current configuration is a continuous CPAC modification indication information;

[0040] The maximum number of consecutive CPAC executions;

[0041] Candidate PSCell list, including one or more PSCell IDs;

[0042] Measurement configuration corresponding to each PSCell;

[0043] The execution conditions corresponding to each PSCell.

[0044] In some embodiments, further comprising:

[0045] When one of the following conditions is met, a conditional primary / secondary cell change cancellation signaling is sent to one or more secondary nodes to instruct the secondary nodes to cancel or release candidate PSCell-related configurations or resources:

[0046] The current CPAC execution times of the user device have reached the maximum value;

[0047] The maximum value of resources reserved by the secondary node for the current user equipment at the current time;

[0048] The master node decides to release the current dual connection architecture of the user equipment.

[0049] In some embodiments, the continuous CPAC configuration information is used to instruct the user equipment to continuously perform CPAC based on the continuous CPAC configuration information, which is generated by integrating various second continuous CPAC indication information.

[0050] Some embodiments of the present disclosure provide a cell change method, performed by a user equipment, including:

[0051] receiving radio resource control (RRC) reconfiguration signaling sent by the master node, the RRC reconfiguration signaling carrying continuous CPAC configuration information, the continuous CPAC configuration information including one or more of the following information: continuous CPAC indication information, indicating that the current request is a continuous CPAC request; a maximum number of consecutive CPAC executions; a candidate PSCell list, including one or more PSCell IDs; a measurement configuration corresponding to each candidate PSCell; and an execution condition corresponding to each candidate PSCell;

[0052] CPAC is continuously performed according to the continuous CPAC configuration information.

[0053] In some embodiments, further comprising:

[0054] Receive RRC reconfiguration signaling sent by the master node, the RRC reconfiguration signaling carrying at least one of the following information: continuous CPAC indication information, indicating that the current is a continuous CPAC configuration modification indication information; the maximum number of consecutive CPAC executions; a candidate PSCell list, including one or more PSCell IDs; a measurement configuration corresponding to each PSCell; and an execution condition corresponding to each PSCell;

[0055] CPAC is continuously performed according to the modified continuous CPAC configuration information.

[0056] In some embodiments, it also includes: when the number of consecutive CPAC executions reaches a maximum value, releasing the current continuous CPAC configuration information, and sending an indication message to the master node that the number of consecutive CPAC executions reaches a maximum value.

[0057] Some embodiments of the present disclosure provide a master node, including: a memory; and a processor coupled to the memory, wherein the processor is configured to execute a cell change method based on instructions stored in the memory.

[0058] Some embodiments of the present disclosure provide a master node configured as a module for executing a cell change method.

[0059] Some embodiments of the present disclosure provide a user equipment, including: a memory; and a processor coupled to the memory, wherein the processor is configured to execute a cell change method based on instructions stored in the memory.

[0060] Some embodiments of the present disclosure provide a user equipment configured as a module for executing a cell change method.

[0061] Some embodiments of the present disclosure provide a non-transitory computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps of the cell change method are implemented.

[0062] Some embodiments of the present disclosure provide a communication system, including: a master node and a user equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The following briefly introduces the drawings required for describing the embodiments or related technologies. The present disclosure can be more clearly understood based on the following detailed description with reference to the drawings.

[0064] Obviously, the drawings described below are only some embodiments of the present disclosure. A person skilled in the art can derive other drawings based on these drawings without inventive effort.

[0065] FIG1 is a schematic flow chart showing a cell change method according to some embodiments of the present disclosure.

[0066] FIG2 shows a schematic flow chart of a cell change method according to some embodiments of the present disclosure.

[0067] FIG3 shows a schematic flow chart of a cell change method triggered by a master node according to some embodiments of the present disclosure.

[0068] FIG4 shows a schematic flow chart of a cell change method triggered by a secondary node according to some embodiments of the present disclosure.

[0069] FIG5 shows a schematic diagram of a user equipment according to some embodiments of the present disclosure.

[0070] FIG6 shows a schematic diagram of a user equipment according to some embodiments of the present disclosure.

[0071] FIG7 shows a schematic diagram of a master node according to some embodiments of the present disclosure.

[0072] FIG8 shows a schematic diagram of a master node according to some embodiments of the present disclosure.

[0073] FIG9 shows a schematic diagram of a communication system according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0074] Exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings. For the sake of clarity and conciseness, not all features of the embodiments are described in the specification. However, it should be understood that many implementation-specific settings must be made in the process of implementing the embodiments in order to achieve the developer's specific goals, such as meeting those restrictions related to equipment and services, and these restrictions may vary depending on the implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the contents of this disclosure.

[0075] It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

[0076] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of the present disclosure are only used to distinguish different steps, devices or modules, and do not represent any specific technical meanings, nor do they indicate a necessary logical order between them.

[0077] It should also be understood that in the embodiments of the present disclosure, “a plurality of” may refer to two or more than two, and “at least one” may refer to one, two, or more than two.

[0078] It should also be understood that any component, data or structure mentioned in the embodiments of the present disclosure can generally be understood as one or more, unless explicitly limited or otherwise indicated in the context.

[0079] The following describes the terms used in the embodiments of the present disclosure.

[0080] MCG: Master Cell group, main cell group;

[0081] SCG: Secondary Cell group, secondary cell group;

[0082] MCG and SCG are concepts under dual connectivity (DC), where the group (Group) of the cell (Cell) where the UE first initiates random access is the MCG.

[0083] PCell: Primary Cell, primary cell;

[0084] SCell: Secondary Cell, secondary cell;

[0085] PSCell: Primary Secondary Cell, primary and secondary cell;

[0086] Within an MCG, there may be multiple cells, one of which is used to initiate initial access. This cell is called the PCell (Primary Cell). As the name suggests, the PCell is the most "primary" cell within the MCG. The PCell within the MCG and the SCell (Secondary Cell) within the MCG are combined using carrier aggregation (CA).

[0087] Under the SCG, there is also a primary cell, the PSCell (Primary Secondary Cell), which can be understood as the cell that initiates initial access under the SCG. The PSCell under the SCG and the SCell under the SCG are combined using the Carrier Access Control (CA) technology.

[0088] In MR-DC, DC refers to the operating mode in which a UE connects to two base stations, while MR refers to multiple RATs (Radio Access Technology). For example, in one MR-DC technology, a UE connects to an eNB (4G base station) and a gNB (5G base station).

[0089] In MR-DC, a base station node whose control plane is directly connected to the core network is called a MN (Master Node), and a base station node whose control plane is not directly connected to the core network is called a SN (Secondary Node).

[0090] MR-DC includes various modes, including EN-DC, NE-DC, and NR-DC, depending on the two base stations connected to the UE. EN-DC, or LTE-NR DC, uses an LTE (Long Term Evolution) base station as the primary node and a 5G NR (New Radio) base station as the secondary node. NE-DC, or NR-LTE DC, uses an NR base station as the primary node and an LTE base station as the secondary node. NR-DC, or NR-NR DC, uses both the primary and secondary nodes as NR base stations. SgNB represents a secondary node in EN-DC, while SN represents a secondary node in either NE-DC or NR-DC.

[0091] According to relevant standards, after a UE performs random access to a target PScell, it must release the CPAC configuration. This means that after completing a PSCell addition or change, the UE must wait for network reconfiguration before performing the next PSCell change. Considering the future deployment of high-frequency cells, frequent PSCell changes can lead to a degraded user experience and increased signaling overhead.

[0092] In an embodiment of the present disclosure, the master node sends continuous CPAC configuration information to the user equipment, so that the user equipment continuously performs CPAC based on the continuous CPAC configuration information, reducing the signaling overhead and delay of the PSCell change process in the MR-DC scenario, and improving the user experience.

[0093] The disclosed embodiment proposes a solution for executing continuous CPAC in an MR-DC scenario, supports MN or SN triggering a continuous CPAC mechanism, coordinates and interacts between base stations for continuous CPAC configuration, and finally configures it to a user device, so that the user device can continuously execute the PSCell change process in a preconfigured candidate PSCell set, thereby reducing the signaling overhead and delay of the PSCell change process in the MR-DC scenario and improving the user experience.

[0094] The continuous CAPC process referred to in the embodiments of the present disclosure also refers to terms such as selective activation (such as Selective Activation), or selective activation of primary and secondary cells (such as Selective Activation of PSCells), or selective activation of secondary cell groups (such as Selective Activation of SCGs). In essence, they are all technical solutions for the UE to perform continuous primary and secondary cell changes based on pre-configuration.

[0095] The solution of the disclosed embodiment can be applied to the dual-connection scenario of high-frequency millimeter waves. The primary base station ensures coverage at low frequency, and the secondary base station improves capacity at high frequency. As the application frequency becomes higher and higher, the coverage radius of the secondary cell becomes smaller and smaller. Users will frequently trigger the primary and secondary cell (PSCell) change process during movement. The application of this solution can effectively reduce the signaling overhead and delay of the primary and secondary cell changes, improve the flexibility of the primary and secondary cell changes, and enhance the user service experience.

[0096] The disclosed embodiments enable the MN and SN nodes to fully interact with each other regarding the necessary information required for continuous CPAC configuration, assist the MN in generating an RRC (Radio Resource Control) configuration containing continuous CPAC configuration information, and enable the user equipment to quickly and flexibly execute the PSCell change process continuously, thereby saving signaling overhead and reducing the PSCell change delay.

[0097] Figure 1 shows a flowchart of a cell change method according to some embodiments of the present disclosure. The cell change method of this embodiment is also a continuous conditional primary and secondary cell addition or change CPAC (or selective activation of secondary cell group, or selective activation of primary and secondary cells) method.

[0098] As shown in FIG. 1 , the cell change method of this embodiment includes steps 110 - 130 , and may further include one or more steps 140 or 150 as needed.

[0099] In step 110, the primary node sends a secondary node adding request signaling to one or more secondary nodes respectively, where the secondary node adding request signaling carries first continuous CPAC indication information (or first selective activation indication information).

[0100] For the convenience of description, the term "selective activation" is used below to describe the mechanism of selectively activating a secondary cell group or selectively activating a primary and secondary cell.

[0101] The first continuous CPAC indication information (or first selective activation indication information) includes one or more of the following information:

[0102] Continuous CPAC (or selective activation) indication information, indicating that the current request is a continuous CPAC (or selective activation) request;

[0103] Candidate PSCell list, including one or more PSCell IDs;

[0104] The maximum number of consecutive CPAC (or selective activation) executions.

[0105] The master node or the slave node can trigger the continuous CPAC (or selective activation) configuration process. When the master node is triggered, the candidate PSCell list can be, for example, suggested by the master node; when the source slave node is triggered, the candidate PSCell list can be, for example, suggested by the source slave node. When the source slave node is triggered, the master node receives the slave node change requirement signaling sent by the source slave node before sending the slave node addition request signaling to one or more slave nodes respectively. The slave node change requirement signaling carries continuous conditional primary and secondary cell change CPC (or selective activation) indication information. The continuous conditional primary and secondary cell change CPC (or selective activation) indication information includes at least one of the following information: continuous CPC (or selective activation) indication information, indicating that the current one is a continuous CPC (or selective activation) request; target slave node list, including one or more next generation radio access network node (NG-RAN node) IDs; candidate PSCell list, including one or more PSCell IDs; the maximum number of consecutive executions of CPC (or selective activation). Then, after executing step 120, the master node further sends a secondary node change confirmation signaling to the source secondary node. The secondary node change confirmation signaling carries a candidate PSCell list for accepting the request, specifically including one or more PScell ​​IDs.

[0106] In step 120, the primary node receives a secondary node adding request response signaling fed back by the secondary node, where the secondary node adding request response signaling carries second continuous CPAC indication information (or second selective activation indication information).

[0107] The second continuous CPAC (or selective activation) indication information includes one or more of the following information:

[0108] Candidate PSCell list, including one or more PScell ​​IDs;

[0109] The maximum time during which the current secondary node reserves resources for the user equipment.

[0110] Among them, the candidate PSCell list in the second continuous CPAC (or second selective activation) indication information is the PSCell that can accept the continuous CPAC (or selective activation) request.

[0111] In step 130, the master node sends a radio resource control RRC reconfiguration signaling to the user equipment, where the RRC reconfiguration signaling carries continuous CPAC (or selective activation) configuration information.

[0112] The continuous CPAC (or selective activation) configuration information is used to instruct the user equipment to continuously perform a CPAC (or selective activation) process based on the continuous CPAC (or selective activation) configuration information. The master node generates the continuous CPAC (or selective activation) configuration information by integrating each second continuous CPAC (or second selective activation) indication information.

[0113] The continuous CPAC (or selective activation) configuration information includes one or more of the following information:

[0114] Continuous CPAC (or selective activation) indication information, indicating that the current request is a continuous CPAC (or selective activation) request;

[0115] The maximum number of consecutive CPAC (or selective activation) operations;

[0116] Candidate PSCell list, including one or more PSCell IDs;

[0117] The measurement configuration corresponding to each candidate PSCell;

[0118] The execution conditions corresponding to each candidate PSCell.

[0119] The candidate PSCell list in the continuous CPAC (or selective activation) configuration information can be obtained, for example, by integrating the candidate PSCell lists in each second continuous CPAC (or selective activation) indication information.

[0120] In step 140, the user equipment continuously performs CPAC according to the continuous CPAC (or selective activation) configuration information.

[0121] When the number of times the user equipment executes the continuous CPAC (or selective activation) process has not reached the maximum value, it does not need to release the CPAC (or selective activation) configuration each time it executes CPAC (or selective activation). Instead, it saves the continuous CPAC (or selective activation) configuration information and continuously executes CPAC (or selective activation) according to the continuous CPAC (or selective activation) configuration information.

[0122] When the number of consecutive CPAC (or selective activation) executions reaches the maximum value, the user equipment releases the current continuous CPAC (or selective activation) configuration information and sends an indication message to the master node that the number of consecutive CPAC (or selective activation) executions reaches the maximum value, so that the master node notifies the corresponding slave node to cancel or release the candidate PScell ​​related configuration or resources.

[0123] In step 150, when one of the following conditions is met, the primary node sends a conditional primary-secondary cell change cancellation signaling to one or more secondary nodes, to instruct the secondary nodes to cancel or release candidate PScell ​​related configurations or resources.

[0124] These situations include: the user equipment's current CPAC (or selective activation) execution times have reached the maximum; the current time reaches the maximum value of resources reserved by the secondary node for the current user equipment; the primary node decides to release the user equipment's current dual-connectivity architecture.

[0125] In the above embodiment, the master node and the slave node interact with the information required for continuous CPAC (or selective activation) configuration, generate continuous CPAC (or selective activation) configuration information, and send continuous CPAC (or selective activation) configuration information to the user equipment, so that the user equipment continuously executes CPAC (or selective activation) based on the continuous CPAC (or selective activation) configuration information, reduces the signaling overhead and delay of the PSCell change process in the MR-DC scenario, and improves the user experience.

[0126] Figure 2 shows a flowchart of a cell change method according to some embodiments of the present disclosure. The cell change method of this embodiment is also a continuous conditional primary and secondary cell addition or change CPAC (or selective activation of secondary cell group, or selective activation of primary and secondary cells) method.

[0127] As shown in FIG. 2 , the cell change method of this embodiment includes the following steps 210 - 230 , and may further include one or more of steps 240 or 250 as needed.

[0128] For the convenience of description, the term "selective activation" is used below to describe the mechanism of selectively activating a secondary cell group or selectively activating a primary and secondary cell.

[0129] In step 210, the primary node sends a secondary node modification request signaling to the one or more secondary nodes.

[0130] The secondary node modification request signaling carries at least one of the following information:

[0131] Continuous CPAC (or selective activation) indication information, indicating that the current is a continuous CPAC (or selective activation) modification request;

[0132] Candidate PCell list, including one or more PSCell IDs;

[0133] The maximum number of consecutive CPAC (or selective activation) executions.

[0134] Among them, the candidate PCell list in the auxiliary node modification request signaling is, for example, the PSCell involved in the continuous CPAC (or selective activation) configuration modification, for example, adding, modifying or canceling the continuous CPAC (or selective activation) configuration of one or more PSCells.

[0135] The continuous CPAC (or selective activation) configuration modification process can be triggered by either the master node or the slave node. When triggered by the master node, the candidate PCell list in the slave node modification request signaling can be, for example, the one recommended by the master node. When triggered by the slave node, the candidate PCell list in the slave node modification request signaling can be, for example, the one recommended by the slave node.

[0136] When a secondary node is triggered, the primary node receives a secondary node modification requirement signaling sent by the source secondary node before sending a secondary node modification request signaling to the one or more secondary nodes. The secondary node modification requirement signaling includes at least one of the following information: continuous CPC (or selective activation) indication information, indicating that the current is a continuous CPC (or selective activation) modification request indication information; the maximum number of consecutive CPC (or selective activation) executions; a candidate PSCell list, including one or more PSCell IDs; after the primary node receives the RRC reconfiguration completion message fed back by the user equipment, it sends a secondary node modification confirmation signaling to the source secondary node, and the secondary node modification confirmation signaling includes a candidate PSCell list.

[0137] In step 220, the primary node receives the secondary node modification request confirmation signaling fed back by the secondary node.

[0138] The secondary node request confirmation signaling includes at least one of the following information:

[0139] Continuous CPC (or selective activation) indication information, indicating that the current is a continuous CPC (or selective activation) modification feedback indication information;

[0140] Candidate PScell ​​list, including one or more PSCell IDs;

[0141] Measurement configuration corresponding to each PSCell;

[0142] The execution conditions corresponding to each PSCell.

[0143] The candidate PSCell list in the secondary node request confirmation signaling is a PSCell that can accept continuous CPC (or selective activation) modification.

[0144] In step 230, the master node sends an RRC reconfiguration signaling to the user equipment, where the RRC reconfiguration signaling carries at least one of the following information:

[0145] Continuous CPAC (or selective activation) indication information, indicating that the current configuration is modified by a continuous CPAC (or selective activation);

[0146] The maximum number of consecutive CPAC (or selective activation) operations;

[0147] Candidate PSCell list, including one or more PSCell IDs;

[0148] Measurement configuration corresponding to each PSCell;

[0149] The execution conditions corresponding to each PSCell.

[0150] The candidate PSCell list in the RRC reconfiguration signaling can be obtained, for example, by integrating the candidate PSCell lists in the modification request confirmation signaling of each secondary node.

[0151] In step 240, the user equipment continuously performs CPAC (or selective activation) according to the modified continuous CPAC (or selective activation) configuration information.

[0152] When the number of times the user equipment continuously executes CPAC (or selective activation) does not reach the maximum value, it does not need to release the CPAC (or selective activation) configuration each time CPAC (or selective activation) is executed. Instead, the continuous CPAC (or selective activation) configuration information is saved and CPAC (or selective activation) is continuously executed according to the continuous CPAC (or selective activation) configuration information.

[0153] When the number of consecutive CPAC (or selective activation) executions reaches the maximum value, the user equipment releases the current continuous CPAC (or selective activation) configuration information and sends an indication message to the master node that the number of consecutive CPAC (or selective activation) executions reaches the maximum value, so that the master node notifies the corresponding slave node to cancel or release the candidate PScell ​​related configuration or resources.

[0154] In step 250, when one of the following conditions is met, the primary node sends a conditional primary-secondary cell change cancellation signaling to one or more secondary nodes, to instruct the secondary nodes to cancel or release candidate PScell ​​related configurations or resources.

[0155] These situations include: the user equipment's current CPAC (or selective activation) execution times have reached the maximum; the current time reaches the maximum value of resources reserved by the secondary node for the current user equipment; the primary node decides to release the user equipment's current dual-connectivity architecture.

[0156] In the above embodiment, the master node and the slave node interact with each other to obtain the information required for continuous CPAC (or selective activation) configuration modification, modify the continuous CPAC (or selective activation) configuration information, and send it to the user equipment, so that the user equipment continuously executes CPAC (or selective activation) according to the modified continuous CPAC (or selective activation) configuration information, thereby reducing the signaling overhead and delay of the PSCell change process in the MR-DC scenario and improving the user experience.

[0157] FIG3 shows a schematic flow chart of a cell change method triggered by a master node according to some embodiments of the present disclosure.

[0158] As shown in FIG3 , the cell change method triggered by the master node in this embodiment includes the following steps.

[0159] Step 310: The UE reports a measurement report to the MN.

[0160] Step 320: The MN decides whether to configure the UE for a continuous CPAC mechanism based on the received measurement report, the actual deployment scenario, the mobility characteristics of the UE and other factors. If so, one or more candidate SNs are screened according to the measurement report, such as C-SN1 and C-SN2 shown in the figure, and a secondary node addition request signaling, such as SN / SgNB Addition Request signaling, is sent to each candidate SN. The signaling carries the first continuous CPAC indication information, i.e., continuous CPAC related information.

[0161] The first continuous CPAC indication information includes one or more of the following information:

[0162] Continuous CPAC indication information, indicating that the current request is a continuous CPAC request, such as Frequent CPAC information or selective activation information;

[0163] The candidate PSCell list contains one or more PSCell IDs, i.e., the PSCell IDs recommended by the MN, which are screened by the MN based on the measurement reports reported by the UE to help the candidate SN select the final candidate PSCell set;

[0164] The maximum number of consecutive CPAC executions, that is, the number of consecutive CPAC executions recommended by the MN: such as 2, 4, 8, 16 or other empirical values, assists the candidate SN in making access control decisions. For example, when the number of consecutive CPAC executions recommended by the MN is large, it means that the candidate SN may need to reserve resources for the UE for a longer time. If the current candidate SN resources are relatively tight, the continuous CPAC request can be rejected.

[0165] Step 330: The candidate SN decides whether to accept this continuous CPAC request based on its own situation. If accepted, it feeds back the auxiliary node addition request response signaling to the MN, such as SN / SgNB Addition Request Acknowledge signaling, and carries the following second continuous CPAC indication information in the feedback signaling.

[0166] The second continuous CPAC indication information includes one or more of the following information:

[0167] A candidate PSCell list, comprising one or more PScell ​​IDs, i.e., PSCell IDs that accept consecutive CPAC requests, is selected by the candidate SN based on the suggested PSCell IDs given by the MN. For example, the candidate SN may directly accept the candidate PSCell ID suggested by the MN.

[0168] The maximum time that the current auxiliary node reserves resources for the user equipment is determined by the candidate SN based on its own resources and load conditions. After feedback to the MN, it can assist the MN in adjusting the configuration of the number of consecutive CPAC executions. For example, when the candidate SN feedback shows that the reservable time is longer, the MN can appropriately increase the "maximum number of consecutive CPAC executions" configured for the UE, otherwise reduce the corresponding configuration.

[0169] Step 340: The MN aggregates and merges the received feedback information, and generates final continuous CPAC configuration information based on the second continuous CPAC indication information carried in the feedback information, and sends it to the UE through RRC reconfiguration signaling, such as RRC (Connection) Reconfiguration signaling.

[0170] The RRC reconfiguration signaling contains the following continuous CPAC configuration information:

[0171] Continuous CPAC indication information, indicating that the current request is a continuous CPAC request, so as to instruct the UE to perform CPAC continuously;

[0172] The maximum number of consecutive CPAC executions;

[0173] Candidate PSCell list, including one or more PSCell IDs, i.e., PSCell IDs obtained after MN integration;

[0174] The measurement configuration corresponding to each candidate PSCell, to instruct the UE to perform measurements based on the measurement configuration;

[0175] The execution condition corresponding to each candidate PSCell is used to indicate the execution condition for the UE to initiate random access to the candidate PSCell.

[0176] Step 350: The UE feeds back an RRC reconfiguration completion signaling, such as an RRC (Connection) Reconfiguration Complete signaling, to the MN, indicating that the UE has received the current configuration.

[0177] If the continuous CPAC configuration information needs to be modified, steps 360-390 can be executed; if the continuous CPAC configuration information does not need to be modified, step 3100 can be directly executed.

[0178] Step 360: The MN decides whether to modify the continuous CPAC configuration of the UE based on information such as network deployment and UE mobility. If so, it sends a secondary node modification request signaling, such as SgNB / SN Modification Request, to the corresponding candidate SN, such as C-SN1 shown in the figure.

[0179] The secondary node modification request signaling carries at least one of the following information:

[0180] Continuous CPAC indication information, indicating that the current request is a continuous CPAC modification request;

[0181] Candidate PCell list, including one or more PSCell IDs, i.e., PSCell IDs that the MN recommends to modify;

[0182] The maximum number of consecutive CPAC executions.

[0183] Step 370: The MN receives the secondary node modification request confirmation signaling fed back by the candidate SN, such as SgNB / SN Modification Request Acknowledge.

[0184] The secondary node request confirmation signaling includes at least one of the following information:

[0185] Continuous CPAC indication information, indicating that the current is a continuous CPAC modification feedback indication information;

[0186] Candidate PScell ​​list, including one or more PSCell IDs, that is, the PSCell IDs that the candidate SN accepts modification;

[0187] Measurement configuration corresponding to each PSCell;

[0188] The execution conditions corresponding to each PSCell.

[0189] Step 380: The MN sends an RRC reconfiguration signaling, such as RRC (Connection) Reconfiguration, to the user equipment.

[0190] The RRC reconfiguration signaling carries at least one of the following information:

[0191] Continuous CPAC indication information, indicating that the current configuration is a continuous CPAC modification indication information;

[0192] The maximum number of consecutive CPAC executions;

[0193] Candidate PSCell list, including one or more PSCell IDs, that is, the PSCell IDs for this modification of the continuous CPAC configuration;

[0194] Measurement configuration corresponding to each PSCell;

[0195] The execution conditions corresponding to each PSCell.

[0196] Step 390: The UE feeds back an RRC reconfiguration completion signaling, such as an RRC (Connection) Reconfiguration Complete signaling, to the MN, indicating that the UE has received the currently modified configuration.

[0197] Step 3100: The UE evaluates the CPAC execution conditions. When it is evaluated that one or more execution conditions are met, it initiates a random access process to the target PSCell and reports the target PSCell information to the MN via RRC (Connection) Reconfiguration Complete signaling. When the UE successfully accesses the target PSCell or the current access fails, the UE maintains / stores the continuous CPAC configuration information and continues to evaluate the CPAC execution conditions. When it is evaluated that one or more execution conditions are met, it initiates a random access process to the target PSCell again and reports the target PSCell information to the MN via RRC (Connection) Reconfiguration Complete signaling.

[0198] The UE continuously executes CPAC according to the latest continuous CPAC configuration information, that is, if the continuous CPAC configuration information has not been modified, CPAC is continuously executed according to the initial continuous CPAC configuration information; if the continuous CPAC configuration information has been modified, CPAC is continuously executed according to the modified continuous CPAC configuration information.

[0199] Step 3110: When the number of consecutive CPAC executions reaches the maximum value, the UE releases the current continuous CPAC configuration information and sends an indication message to the MN that the number of consecutive CPAC executions reaches the maximum value to inform the MN.

[0200] The UE sends the indication information, for example, through RRC reconfiguration signaling, such as RRC (Connection) Reconfiguration.

[0201] Step 3120: When one of the following conditions is met, the MN sends a conditional primary-secondary cell change cancellation signaling, such as Conditional Pscell Change Cancel, to one or more secondary nodes, such as C-SN1 and C-SN2, to instruct the secondary node to cancel or release the candidate PScell ​​related configuration or resources. These conditions include: the current CPAC execution times of the user equipment has reached the maximum value; the current time reaches the maximum value of the resources reserved by the secondary node for the current user equipment; the primary node decides to release the current dual-connection architecture of the user equipment.

[0202] In the above embodiment, the master node triggers continuous CPAC, and the master node interacts with the slave node to generate / modify continuous CPAC configuration information, so that the user equipment continuously executes CPAC based on the continuous CPAC configuration information, reducing the signaling overhead and delay of the PSCell change process in the MR-DC scenario, and improving the user experience.

[0203] FIG4 shows a schematic flow chart of a cell change method triggered by a secondary node according to some embodiments of the present disclosure.

[0204] As shown in FIG4 , the cell change method triggered by the secondary node in this embodiment includes the following steps.

[0205] Step 410: The UE reports a measurement report to the source secondary node S-SN. In some cases, the UE first reports the measurement report to the primary node, and the primary node then forwards the measurement report to the source secondary node.

[0206] Step 420: The S-SN decides whether to configure the UE for continuous CPC based on the received measurement report, the actual deployment scenario, and the mobility characteristics of the UE. If so, the S-SN sends a secondary node change requirement signaling, such as SN / SgNB Change Required, to the MN.

[0207] The secondary node change requirement signaling carries continuous CPC indication information, where the continuous CPC indication information includes at least one of the following information:

[0208] Continuous CPC indication information, indicating that the current request is a continuous CPC request;

[0209] A target secondary node list includes one or more Next Generation Radio Access Network (NG-RAN) node IDs, i.e., one or more target secondary nodes selected by the S-SN based on the measurement report, such as T-SN1 and T-SN2 shown in the figure;

[0210] Candidate PSCell list, containing one or more PSCell IDs, i.e., PSCell IDs recommended by the S-SN;

[0211] The maximum number of consecutive CPC executions.

[0212] Step 430: The MN sends a secondary node addition request signaling, such as SN / SgNB Addition Request signaling, to each secondary node. The signaling carries first continuous CPAC indication information, i.e., continuous CPAC related information.

[0213] The first continuous CPAC indication information includes one or more of the following information:

[0214] Continuous CPAC indication information, indicating that the current request is a continuous CPAC request, such as Frequent CPAC information or selective activation information;

[0215] The candidate PSCell list contains one or more PSCell IDs, i.e., the PSCell IDs recommended by the S-SN. The S-SN selects the final set of candidate PSCells based on the measurement reports reported by the UE.

[0216] The maximum number of consecutive CPAC executions, that is, the number of consecutive CPAC executions recommended by the S-SN: such as 2, 4, 8, 16 or other empirical values, assists the candidate SN in making access control decisions. For example, when the number of consecutive CPAC executions recommended by the S-SN is large, it means that the candidate SN may need to reserve resources for the UE for a longer time. If the current candidate SN resources are relatively tight, the continuous CPAC request can be rejected.

[0217] Step 440: The candidate SN decides whether to accept this continuous CPAC request based on its own situation. If accepted, it adds a request response signaling to the MN feedback auxiliary node, such as SN / SgNB Addition Request Acknowledge signaling, and carries the following second continuous CPAC indication information in the feedback signaling.

[0218] The second continuous CPAC indication information includes one or more of the following information:

[0219] The candidate PSCell list contains one or more PScell ​​IDs, i.e., the PSCell IDs that accept consecutive CPAC requests, which are selected by the candidate SN based on the suggested PSCell IDs given by the S-SN. For example, the candidate SN may directly accept the candidate PSCell ID suggested by the S-SN.

[0220] The maximum time that the current auxiliary node reserves resources for the user equipment is determined by the candidate SN based on its own resources and load conditions. After feedback to the S-SN, it can assist the S-SN in adjusting the configuration of the number of consecutive CPAC executions. For example, when the candidate SN feedback shows that the reservable time is longer, the S-SN can appropriately increase the "maximum number of consecutive CPAC executions" configured for the UE, otherwise reduce the corresponding configuration.

[0221] Step 450: The MN sends a secondary node change confirmation signaling to the source secondary node. The secondary node change confirmation signaling carries a candidate PSCell list for accepting the request, specifically including one or more PScell ​​IDs.

[0222] Step 460: The MN aggregates and merges the received feedback information, and generates final continuous CPAC configuration information based on the second continuous CPAC indication information carried in the feedback information, and sends it to the UE through RRC reconfiguration signaling, such as RRC (Connection) Reconfiguration signaling.

[0223] The RRC reconfiguration signaling contains the following continuous CPAC configuration information:

[0224] Continuous CPAC indication information, indicating that the current request is a continuous CPAC request, so as to instruct the UE to perform CPAC continuously;

[0225] The maximum number of consecutive CPAC executions;

[0226] Candidate PSCell list, including one or more PSCell IDs, i.e., PSCell IDs obtained after MN integration;

[0227] The measurement configuration corresponding to each candidate PSCell, to instruct the UE to perform measurements based on the measurement configuration;

[0228] The execution condition corresponding to each candidate PSCell is used to indicate the execution condition for the UE to initiate random access to the candidate PSCell.

[0229] Step 470: The UE feeds back an RRC reconfiguration completion signaling, such as RRC (Connection) Reconfiguration Complete signaling, to the MN, indicating that the UE has received the current configuration.

[0230] If the continuous CPAC configuration information needs to be modified, steps 480-4130 can be executed; if the continuous CPAC configuration information does not need to be modified, step 4140 can be directly executed.

[0231] Step 480: The S-SN decides whether to modify the continuous CPAC configuration of the UE based on information such as network deployment and UE mobility. If so, it sends a secondary node modification requirement signaling, such as SN Modification Required, to the MN.

[0232] The secondary node modification requirement signaling includes at least one of the following information:

[0233] Continuous CPC indication information, indicating that the current request is a continuous CPC modification request;

[0234] The maximum number of consecutive CPC executions;

[0235] The candidate PSCell list contains one or more PSCell IDs, that is, the PSCell IDs that the S-SN recommends to modify.

[0236] Step 490: The MN sends a secondary node modification request signaling, such as SgNB / SN Modification Request, to the corresponding secondary node, such as T-SN1 exemplarily shown in the figure.

[0237] The secondary node modification request signaling carries at least one of the following information:

[0238] Continuous CPAC indication information, indicating that the current request is a continuous CPAC modification request;

[0239] Candidate PCell list, containing one or more PSCell IDs, i.e., the PSCell IDs that the S-SN recommends to modify;

[0240] The maximum number of consecutive CPAC executions.

[0241] Step 4100: The MN receives the secondary node modification request confirmation signaling fed back by the candidate SN, such as SgNB / SN modification Request Acknowledge.

[0242] The secondary node request confirmation signaling includes at least one of the following information:

[0243] Continuous CPC indication information, indicating that the current information is a continuous CPC modification feedback indication information;

[0244] Candidate PScell ​​list, including one or more PSCell IDs, that is, the PSCell IDs that the candidate SN accepts modification;

[0245] Measurement configuration corresponding to each PSCell;

[0246] The execution conditions corresponding to each PSCell.

[0247] Step 4110: The MN sends a secondary node modification confirmation signaling, SN / SgNB Modification Confirm, to the source secondary node, where the secondary node modification confirmation signaling includes a candidate PSCell list.

[0248] Step 4120: The MN sends RRC reconfiguration signaling, such as RRC (Connection) Reconfiguration, to the user equipment.

[0249] The RRC reconfiguration signaling carries at least one of the following information:

[0250] Continuous CPAC indication information, indicating that the current configuration is a continuous CPAC modification indication information;

[0251] The maximum number of consecutive CPAC executions;

[0252] Candidate PSCell list, including one or more PSCell IDs, that is, the PSCell IDs for this modification of the continuous CPAC configuration;

[0253] Measurement configuration corresponding to each PSCell;

[0254] The execution conditions corresponding to each PSCell.

[0255] Step 4130: The UE feeds back an RRC reconfiguration completion signaling, such as an RRC (Connection) Reconfiguration Complete signaling, to the MN, indicating that the UE has received the currently modified configuration.

[0256] Step 4140: The UE evaluates the CPAC execution conditions. If one or more of the execution conditions are satisfied, the UE initiates a random access procedure to the target PSCell and reports the target PSCell information to the MN via RRC (Connection) Reconfiguration Complete signaling. When the UE successfully accesses the target PSCell or fails to access the target PSCell, the UE retains / stores the continuous CPAC configuration information and continues to evaluate the CPAC execution conditions. If one or more of the execution conditions are satisfied, the UE again initiates a random access procedure to the target PSCell and reports the target PSCell information to the MN via RRC (Connection) Reconfiguration Complete signaling.

[0257] The UE continuously executes CPAC according to the latest continuous CPAC configuration information, that is, if the continuous CPAC configuration information has not been modified, CPAC is continuously executed according to the initial continuous CPAC configuration information; if the continuous CPAC configuration information has been modified, CPAC is continuously executed according to the modified continuous CPAC configuration information.

[0258] Step 4150: When the number of consecutive CPAC executions reaches the maximum value, the UE releases the current continuous CPAC configuration information and sends an indication message to the MN that the number of consecutive CPAC executions reaches the maximum value, so as to inform the MN.

[0259] The UE sends the indication information, for example, through RRC reconfiguration signaling, such as RRC (Connection) Reconfiguration.

[0260] Step 4160: When one of the following conditions is met, the MN sends a conditional primary-secondary cell change cancellation signaling, such as Conditional Pscell Change Cancel, to one or more secondary nodes to instruct the secondary nodes to cancel or release the candidate PScell ​​related configuration or resources. These conditions include: the current CPAC execution times of the user equipment has reached the maximum value; the current time reaches the maximum value of the resources reserved by the secondary node for the current user equipment; the primary node decides to release the current dual-connection architecture of the user equipment.

[0261] In the above embodiment, the secondary node triggers continuous CPAC, the primary node interacts with the secondary node, generates / modifies continuous CPAC configuration information, so that the user equipment continuously executes CPAC based on the continuous CPAC configuration information, reduces the signaling overhead and delay of the PSCell change process in the MR-DC scenario, and improves the user experience.

[0262] FIG5 shows a schematic diagram of a master node according to some embodiments of the present disclosure.

[0263] As shown in FIG5 , the master node 500 of this embodiment includes the following modules.

[0264] The sending module 510 is configured to send a secondary node addition request signaling to one or more secondary nodes respectively, where the secondary node addition request signaling carries first continuous CPAC indication information; and send a radio resource control RRC reconfiguration signaling to the user equipment, where the RRC reconfiguration signaling carries continuous CPAC configuration information.

[0265] The receiving module 520 is configured to receive a secondary node adding request response signaling fed back by the secondary node, where the secondary node adding request response signaling carries second continuous CPAC indication information;

[0266] The receiving module 520 is further configured to receive secondary node change requirement signaling sent by the source secondary node before sending the secondary node addition request signaling to the one or more secondary nodes respectively, where the secondary node change requirement signaling carries continuous conditional primary and secondary cell CPC change indication information, where the continuous conditional primary and secondary cell CPC change indication information includes at least one of the following information:

[0267] Continuous CPC indication information, indicating that the current request is a continuous CPC request;

[0268] Target secondary node list, including one or more next-generation wireless access network node IDs;

[0269] Candidate PSCell list, including one or more PSCell IDs;

[0270] The maximum number of consecutive CPC executions.

[0271] The sending module 510 is further configured to send a secondary node change confirmation signaling to the source secondary node, where the secondary node change confirmation signaling carries a candidate PSCell list for accepting the request, specifically including one or more PScell ​​IDs.

[0272] The sending module 510 is further configured to send a secondary node modification request signaling to the one or more secondary nodes, where the secondary node modification request signaling carries at least one of the following information:

[0273] Continuous CPAC indication information, indicating that the current request is a continuous CPAC modification request;

[0274] Candidate PCell list, including one or more PSCell IDs;

[0275] The maximum number of consecutive CPAC executions;

[0276] The receiving module 520 is further configured to receive a secondary node modification request confirmation signaling fed back by the secondary node, where the secondary node modification request confirmation signaling includes at least one of the following information:

[0277] Continuous CPAC indication information, indicating that the current is a continuous CPAC modification feedback indication information;

[0278] Candidate PScell ​​list, including one or more PSCell IDs;

[0279] Measurement configuration corresponding to each PSCell;

[0280] The execution conditions corresponding to each PSCell.

[0281] The receiving module 520 is further configured to, before sending the secondary node modification request signaling to the one or more secondary nodes, receive a secondary node modification requirement signaling sent by the source secondary node, where the secondary node modification requirement signaling includes at least one of the following information:

[0282] Continuous CPC indication information, indicating that the current request is a continuous CPC modification request;

[0283] The maximum number of consecutive CPC executions;

[0284] Candidate PSCell list, including one or more PSCell IDs;

[0285] After receiving the RRC reconfiguration completion message fed back by the user equipment, a secondary node modification confirmation signaling is sent to the source secondary node, where the secondary node modification confirmation signaling includes a candidate PSCell list.

[0286] The sending module 510 is further configured to send RRC reconfiguration signaling to the user equipment, where the RRC reconfiguration signaling carries at least one of the following information:

[0287] Continuous CPAC indication information, indicating that the current configuration is a continuous CPAC modification indication information;

[0288] The maximum number of consecutive CPAC executions;

[0289] Candidate PSCell list, including one or more PSCell IDs;

[0290] Measurement configuration corresponding to each PSCell;

[0291] The execution conditions corresponding to each PSCell.

[0292] The sending module 510 is further configured to send a conditional primary-secondary cell change cancellation signaling to one or more secondary nodes when one of the following conditions is met, to instruct the secondary nodes to cancel or release the candidate PScell-related configuration or resources:

[0293] The current CPAC execution times of the user device have reached the maximum value;

[0294] The maximum value of resources reserved by the secondary node for the current user equipment at the current time;

[0295] The master node decides to release the current dual-connection architecture of the user equipment.

[0296] FIG6 shows a schematic diagram of a master node according to some embodiments of the present disclosure.

[0297] As shown in FIG6 , the master node 600 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610 , and the processor 620 is configured to execute the continuous CPAC method in any of the aforementioned embodiments based on instructions stored in the memory 610 .

[0298] The master node 600 may further include an input / output interface 630 , a network interface 640 , a storage interface 650 , etc. These interfaces 630 , 640 , 650 , the memory 610 , and the processor 620 may be connected via a bus 660 , for example.

[0299] The memory 610 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, application programs, a boot loader, and other programs.

[0300] The processor 620 may be implemented using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, or discrete hardware components such as discrete gates or transistors.

[0301] Among them, the input and output interface 630 provides a connection interface for input and output devices such as a display, mouse, keyboard, and touch screen. The network interface 640 provides a connection interface for various networked devices. The storage interface 650 provides a connection interface for external storage devices such as SD cards and USB flash drives. The bus 660 can use any of a variety of bus structures. For example, bus structures include but are not limited to the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MCA) bus, and the Peripheral Component Interconnect (PCI) bus.

[0302] FIG7 shows a schematic diagram of a user equipment according to some embodiments of the present disclosure.

[0303] As shown in FIG7 , the user equipment 700 of this embodiment includes the following modules.

[0304] The receiving module 710 is configured to receive a radio resource control (RRC) reconfiguration signaling sent by the master node, where the RRC reconfiguration signaling carries continuous CPAC configuration information, where the continuous CPAC configuration information includes one or more of the following information:

[0305] Continuous CPAC indication information, indicating that the current request is a continuous CPAC request;

[0306] The maximum number of consecutive CPAC executions;

[0307] Candidate PSCell list, including one or more PSCell IDs;

[0308] The measurement configuration corresponding to each candidate PSCell;

[0309] Execution conditions corresponding to each candidate PSCell;

[0310] The execution module 720 is configured to continuously execute CPAC according to the continuous CPAC configuration information.

[0311] The receiving module 710 is further configured to receive an RRC reconfiguration signaling sent by the master node, where the RRC reconfiguration signaling carries at least one of the following information:

[0312] Continuous CPAC indication information, indicating that the current configuration is a continuous CPAC modification indication information;

[0313] The maximum number of consecutive CPAC executions;

[0314] Candidate PSCell list, including one or more PSCell IDs;

[0315] Measurement configuration corresponding to each PSCell;

[0316] Execution conditions corresponding to each PSCell;

[0317] The execution module 720 is further configured to continuously execute CPAC according to the modified continuous CPAC configuration information.

[0318] The sending module 730 is configured to release the current continuous CPAC configuration information when the number of consecutive CPAC executions reaches a maximum value, and send indication information indicating that the number of consecutive CPAC executions reaches a maximum value to the master node.

[0319] FIG8 shows a schematic diagram of a master node according to some embodiments of the present disclosure.

[0320] As shown in FIG8 , the user equipment 800 of this embodiment includes: a memory 810 and a processor 820 coupled to the memory 810 , and the processor 820 is configured to execute the continuous CPAC method in any of the aforementioned embodiments based on instructions stored in the memory 810 .

[0321] The user equipment 800 may further include an input / output interface 830 , a network interface 840 , a storage interface 850 , etc. These interfaces 830 , 840 , 850 , the memory 810 , and the processor 820 may be connected via a bus 860 , for example.

[0322] The memory 810 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, application programs, a boot loader, and other programs.

[0323] The processor 820 may be implemented using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, or discrete hardware components such as discrete gates or transistors.

[0324] Among them, the input and output interface 830 provides a connection interface for input and output devices such as a display, mouse, keyboard, and touch screen. The network interface 840 provides a connection interface for various networked devices. The storage interface 850 provides a connection interface for external storage devices such as SD cards and USB flash drives. The bus 860 can use any of a variety of bus structures. For example, bus structures include but are not limited to the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MCA) bus, and the Peripheral Component Interconnect (PCI) bus.

[0325] FIG9 shows a schematic diagram of a communication system according to some embodiments of the present disclosure.

[0326] As shown in Figure 9, the communication system 900 of this embodiment includes: master nodes 500, 600 and user equipment 700, 800. The master nodes 500, 600 are in communication connection with the user equipment 700, 800. One master node can serve multiple user equipments.

[0327] Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more non-transitory computer-readable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer program code.

[0328] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0329] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0330] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0331] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A cell change method, executed by a master node, comprising: Sending a secondary node adding request signaling to one or more secondary nodes respectively, where the secondary node adding request signaling carries the first continuous condition primary and secondary cell adding or changing CPAC indication information; receiving a secondary node adding request response signaling fed back by the secondary node, where the secondary node adding request response signaling carries second continuous CPAC indication information; A radio resource control (RRC) reconfiguration signaling is sent to the user equipment, where the RRC reconfiguration signaling carries continuous CPAC configuration information.

2. The method according to claim 1, before sending the secondary node addition request signaling to one or more secondary nodes respectively, further comprises: receiving a secondary node change requirement signaling sent by a source secondary node, wherein the secondary node change requirement signaling carries continuous conditional primary and secondary cell change CPC indication information, and the continuous conditional primary and secondary cell change CPC indication information includes at least one of the following information: Continuous CPC indication information, indicating that the current request is a continuous CPC request; A target auxiliary node list, including one or more next generation wireless access network node IDs; A candidate primary and secondary cell PSCell list, including one or more PSCell IDs; The maximum number of consecutive CPC executions.

3. The method according to claim 2, further comprising: A secondary node change confirmation signaling is sent to the source secondary node, where the secondary node change confirmation signaling carries a candidate PSCell list for accepting the request, specifically including one or more PScell ​​IDs.

4. According to the method according to any one of claims 1 to 3, the first continuous CPAC indication information includes one or more of the following information: Continuous CPAC indication information, indicating that the current request is a continuous CPAC request; Candidate PSCell list, including one or more PSCell IDs; The maximum number of consecutive CPAC executions.

5. According to the method according to any one of claims 1 to 3, the second continuous CPAC indication information includes one or more of the following information: Candidate PSCell list, including one or more PSCell IDs; The maximum time for which the current secondary node reserves resources for the user equipment.

6. According to the method according to any one of claims 1 to 3, the continuous CPAC configuration information includes one or more of the following information: Continuous CPAC indication information, indicating that the current request is a continuous CPAC request; The maximum number of consecutive CPAC executions; Candidate PSCell list, including one or more PSCell IDs; The measurement configuration corresponding to each candidate PSCell; The execution conditions corresponding to each candidate PSCell.

7. The method according to any one of claims 1 to 6, further comprising: Sending a secondary node modification request signaling to the one or more secondary nodes, where the secondary node modification request signaling carries at least one of the following information: continuous CPAC indication information, indicating that the current is a continuous CPAC modification request; Candidate PCell list, including one or more PSCell IDs; maximum number of consecutive CPAC executions; receiving a secondary node modification request confirmation signaling fed back by the secondary node, wherein the secondary node request confirmation signaling includes at least one of the following information: continuous CPAC indication information, indicating that the current is a continuous CPAC modification feedback indication information; The candidate PScell ​​list includes one or more PSCell IDs; the measurement configuration corresponding to each PSCell; and the execution conditions corresponding to each PSCell.

8. The method according to claim 7, before sending the secondary node modification request signaling to the one or more secondary nodes, further comprises: Receiving a secondary node modification requirement signaling sent by a source secondary node, wherein the secondary node modification requirement signaling includes at least one of the following information: continuous CPC indication information, indicating that the current is a continuous CPAC modification request; a maximum number of consecutive CPC executions; Candidate PSCell list, including one or more PSCell IDs; After receiving the RRC reconfiguration completion message fed back by the user equipment, a secondary node modification confirmation signaling is sent to the source secondary node, where the secondary node modification confirmation signaling includes a candidate PSCell list.

9. The method according to claim 7, further comprising: Sending RRC reconfiguration signaling to the user equipment, where the RRC reconfiguration signaling carries at least one of the following information: Continuous CPAC indication information, indicating that the current configuration is a continuous CPAC modification indication information; The maximum number of consecutive CPAC executions; Candidate PSCell list, including one or more PSCell IDs; The measurement configuration corresponding to each PSCell; The execution conditions corresponding to each PSCell.

10. The method according to any one of claims 1 to 9, further comprising: When one of the following conditions is met, a conditional primary-secondary cell change cancellation signaling is sent to one or more secondary nodes to instruct the secondary nodes to cancel or release the candidate PSCell related configuration or resources: The current CPAC execution times of the user device have reached the maximum value; The maximum value of resources reserved by the auxiliary node for the current user equipment at the current time; The master node decides to release the current dual connection architecture of the user equipment.

11. The method according to any one of claims 1 to 9, The continuous CPAC configuration information is used to instruct the user equipment to continuously perform CPAC based on the continuous CPAC configuration information, which is generated by integrating various second continuous CPAC indication information.

12. A cell change method, performed by a user equipment, comprising: Receiving a radio resource control RRC reconfiguration signaling sent by the master node, the RRC reconfiguration signaling carries CPAC configuration information of adding or changing a continuous conditional primary and secondary cell, the continuous CPAC configuration information includes one or more of the following information: continuous CPAC indication information, indicating that the current is an indication information of a continuous CPAC request; the maximum number of consecutive executions of CPAC; A list of candidate primary and secondary cells PSCells, including one or more PSCell IDs; measurement configurations corresponding to each candidate PSCell; execution conditions corresponding to each candidate PSCell; CPAC is continuously performed according to the continuous CPAC configuration information.

13. The method according to claim 12, further comprising: Receiving an RRC reconfiguration signaling sent by the master node, the RRC reconfiguration signaling carrying at least one of the following information: continuous CPAC indication information, indicating that the current is a continuous CPAC modification configuration indication information; the maximum number of consecutive CPAC executions; Candidate PSCell list, including one or more PSCell IDs; measurement configuration corresponding to each PSCell; execution conditions corresponding to each PSCell; CPAC is continuously performed according to the modified continuous CPAC configuration information.

14. The method according to any one of claims 12-13, further comprising: When the number of consecutive CPAC executions reaches a maximum value, the current continuous CPAC configuration information is released, and indication information that the number of consecutive CPAC executions reaches a maximum value is sent to the master node.

15. A master node, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to execute a command based on instructions stored in the memory. Command to execute the method according to any one of claims 1 to 11.

16. A master node, configured as a module to execute the method according to any one of claims 1 to 11.

17. A user equipment, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to execute the method of any one of claims 12-14 based on instructions stored in the memory.

18. A user equipment, configured as a module to execute the method according to any one of claims 12 to 14.

19. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the steps of the method according to any one of claims 1 to 14 are implemented.

20. A communication system comprising: A master node, configured to execute the method according to any one of claims 1 to 11; as well as User equipment, configured to execute the method according to any one of claims 12 to 14.

21. A computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 14.

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