Configuration method and device for updating PSCell conditions in dual connection, storage medium, base station, and terminal

Abstract

A configuration method and device, storage medium, base station, and terminal for updating PSCell conditions in dual connectivity, wherein the method comprises: when configuring CPC for UE, determining whether a configuration threshold sent by a primary base station is received, the configuration threshold being a threshold for the number of CPCs that can be configured by a secondary base station; if received, determining the number of CPCs that can be configured by the secondary base station according to the threshold, the number of CPCs that can be configured by the secondary base station being less than or equal to the configuration threshold. Thus, it can be ensured that in dual connectivity, the total number of CPCs configured by the MN and the SN for the UE does not exceed the capacity of the UE.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a configuration method and device, a storage medium, a base station, and a terminal for updating PSCell conditions in dual connectivity. Background Art

[0002] In the discussion of 3GPP, the protocol will introduce a conditional handover (CHO) mechanism, see Figure 1 , Figure 1 The source cell (also known as the source base station, Source Node) to which the UE is currently connected sends a handover request ( Figure 1 After receiving the confirmation of the candidate target cell (CHO request ACK), a handover command is sent to the UE, which contains the handover condition ( Figure 1 For example, the switching condition may be that when the signal quality of the candidate target cell is higher than the signal quality of the serving cell by a predetermined offset, cell switching is performed.

[0003] After receiving the handover command, the user equipment (UE) determines whether the candidate target cell meets the handover conditions. If so, the cell handover is performed. Specifically, the UE uses the configuration parameters of the candidate target cell (the target cell of the handover in this case) contained in the handover command to synchronize to the target cell and perform the random access process ( Figure 1 The target cell performs a handover and sends a handover completion signaling after the target cell completes the random access (RA) process, indicating that the radio resource control (RRC) reconfiguration is complete. As a result, the UE switches to the target cell. After the UE accesses the target cell, the target base station performs a path switch and notifies the source base station to release the context of the UE.

[0004] In addition, if the UE determines that the handover condition is not met, the UE continues to maintain the RRC connection with the source base station. Optionally, the source base station can configure multiple candidate target cells and corresponding handover conditions ( Figure 1 not shown).

[0005] After the UE receives the switching command and before it switches to the target cell, the UE continues to maintain an RRC connection with the source base station. During this period, the UE continues to perform measurements according to the measurement configuration configured by the source base station, and reports neighboring cells that meet the reporting conditions to the source base station. The source base station can adjust the switching conditions, candidate target cells, etc. at any time according to the actual situation, or send a switching command for unconditional switching. To this end, the source base station needs to grasp the environmental changes of the channel where the UE is located in real time in order to make decisions in time to avoid multiple consecutive cell switches due to the UE switching to an inappropriate neighboring cell, thereby affecting the data transmission rate and user experience. At this time, the UE switching to an inappropriate neighboring cell may mean that the UE switches to a neighboring cell that is not the strongest on a certain frequency. After switching to a non-strongest neighboring cell, the UE's uplink and downlink signal transmissions will be greatly interfered with, and the base station may make a decision to switch again.

[0006] The above conditional switching mechanism can be applied to the primary secondary cell (PSCell) switching update (Change) in dual connection, which is called the conditional PSCellChange (CPC). In dual connection, the UE maintains connection with two base stations, namely the master base station (MN) and the secondary base station (SN), and can interact with the two base stations for signaling and data at the same time.

[0007] When the conditional switching mechanism is introduced in PSCell Change, the MN or SN can configure the configuration parameters of the PSCell conditional update (CPC for short, or CPC configuration) for the UE. A CPC configuration can include an identifier of a candidate PSCell, wireless parameters configured by the candidate PSCell for the UE, and PSCell update conditions. Among them, there can be multiple candidate PSCells, and the source PSCell can send a request to one or more candidate PSCells, which are then configured by each candidate PSCell and sent to the UE through the source PSCell. Update conditions, for example: when the signal quality of the candidate PSCell exceeds a predetermined threshold, or the signal quality of the candidate PSCell exceeds the signal quality of the source PSCell by a preset offset, the PSCell update is performed.

[0008] When both MN and SN configure CPC for UE, because the number of bits of CPC related to each candidate PScell ​​may be large, if too many CPCs are configured on both sides (that is, too many corresponding candidate PSCells), it is easy to exceed the capacity of UE, thereby affecting mobility performance and user experience.

[0009] Therefore, there is an urgent need for a configuration method for updating PSCell conditions in dual connectivity, which can ensure that the total number of CPCs configured by the MN and the SN for the UE does not exceed the capacity of the UE. Summary of the invention

[0010] The technical problem solved by the present invention is how to ensure that the total number of CPCs configured by the MN and the SN for the UE does not exceed the capacity of the UE in dual connectivity, so as to ensure mobility performance.

[0011] To solve the above technical problems, an embodiment of the present invention provides a configuration method for updating PSCell conditions in dual connections, the method comprising: when configuring CPC for a UE, determining whether a configuration threshold sent by a primary base station is received, the configuration threshold being a threshold for the number of CPCs that can be configured by a secondary base station; if received, determining the number of CPCs that can be configured by the secondary base station according to the number threshold, the number of CPCs that can be configured by the secondary base station being less than or equal to the configuration threshold.

[0012] Optionally, the configuration threshold is a number threshold of CPCs in which no master base station participates and / or a number threshold of CPCs in which a master base station participates.

[0013] Optionally, the method further includes: receiving the configuration threshold sent by the primary base station through a secondary base station adding request or a secondary base station modifying request.

[0014] Optionally, after determining whether the configuration threshold sent by the primary base station is received, the method further includes: if the configuration threshold is not received, determining a maximum number of CPCs that can be configured for the secondary base station according to a first preset threshold.

[0015] Optionally, the method further includes: sending a CPC quantity threshold configuration request or a CPC quantity threshold modification request to the primary base station, so that the primary base station sends the configuration threshold to the secondary base station or updates the configuration threshold.

[0016] An embodiment of the present invention also provides a configuration method for updating PSCell conditions in dual connections, the method comprising: sending a configuration threshold to a secondary base station so that when the secondary base station configures CPC for a UE, the secondary base station determines the number of CPCs that can be configured for the secondary base station according to the number threshold; wherein the configuration threshold is a number threshold for CPCs that can be configured for the secondary base station, and the number of CPCs that can be configured for the secondary base station is less than or equal to the configuration threshold.

[0017] Optionally, the configuration threshold is a number threshold of CPCs in which no master base station participates and / or a number threshold of CPCs in which a master base station participates.

[0018] Optionally, the method further includes: sending the configuration threshold to the secondary base station through the secondary base station addition request or the secondary base station modification request.

[0019] Optionally, the method further includes: receiving a CPC quantity threshold configuration request or a CPC quantity threshold modification request sent by the secondary base station, and sending the configuration threshold to the secondary base station or updating the configuration threshold.

[0020] An embodiment of the present invention also provides a configuration method for updating PSCell conditions in dual connections, the method comprising: receiving CPC configured by a secondary base station and / or a primary base station, recorded as a total CPC; determining whether the total number of CPCs exceeds a second preset threshold; if the total number of CPCs does not exceed the second preset threshold, performing a PSCell update according to the total CPC; if the total number of CPCs exceeds the second preset threshold, selecting a number of CPCs from the total CPC according to a preset rule, and performing a PSCell update according to the selected CPCs; wherein the number of CPCs configured by the secondary base station is less than or equal to a configuration threshold, the configuration threshold is a threshold for the number of CPCs that can be configured by the secondary base station, and the configuration threshold is sent by the primary base station to the secondary base station.

[0021] Optionally, the configuration threshold is a number threshold of CPCs in which no master base station participates and / or a number threshold of CPCs in which a master base station participates.

[0022] Optionally, if the secondary base station does not receive the configuration threshold sent by the primary base station, the number of CPCs configured by the secondary base station is less than or equal to a first preset threshold.

[0023] Optionally, the preset rule includes one of giving priority to the last configured CPCs, giving priority to the CPC configured by the primary base station, giving priority to the CPC configured by the secondary base station, and giving priority to the CPC configured by the secondary base station without the participation of the primary base station.

[0024] Optionally, after selecting a number of CPCs from the total CPCs according to a preset rule, the method further includes: deleting configurations of CPCs that are not selected.

[0025] An embodiment of the present invention also provides a configuration device for updating PSCell conditions in dual connections, the device comprising: a configuration threshold reception judgment module, used to determine whether the configuration threshold sent by the primary base station is received when configuring CPC for the UE, the configuration threshold being the number threshold of CPCs that can be configured for the secondary base station; a CPC configuration module, used to determine the number of CPCs that can be configured for the secondary base station according to the number threshold if received, the number of CPCs that can be configured for the secondary base station being less than or equal to the configuration threshold.

[0026] An embodiment of the present invention also provides a configuration device for updating PSCell conditions in dual connections, the device comprising: a configuration threshold sending module, used to send a configuration threshold to a secondary base station, so that when the secondary base station configures CPC for a UE, the number of CPCs that can be configured by the secondary base station is determined according to the number threshold; wherein the configuration threshold is a number threshold of CPCs that can be configured by the secondary base station, and the number of CPCs that can be configured by the secondary base station is less than or equal to the configuration threshold.

[0027] An embodiment of the present invention also provides a configuration device for updating PSCell conditions in dual connections, the device comprising: a configuration receiving module, used to receive CPCs configured by a secondary base station and / or a primary base station, recorded as a total CPC; a judgment module, used to judge whether the total number of CPCs exceeds a second preset threshold; a direct use module, used to perform PSCell update according to the total CPC if the total number of CPCs does not exceed the second preset threshold; a CPC selection module, used to select a number of CPCs from the total CPC according to a preset rule if the total number of CPCs exceeds the second preset threshold, and perform PSCell update according to the selected CPC; wherein the number of CPCs configured by the secondary base station is less than or equal to the configuration threshold, the configuration threshold is the number threshold of CPCs that can be configured by the secondary base station, and the configuration threshold is sent by the primary base station to the secondary base station.

[0028] An embodiment of the present invention further provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are executed.

[0029] An embodiment of the present invention further provides a base station, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the steps of the above method when executing the computer program.

[0030] An embodiment of the present invention further provides a terminal, including a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the steps of the above method when running the computer program.

[0031] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0032] The embodiment of the present invention provides a configuration method for updating PSCell conditions in dual connectivity, the method comprising: sending a configuration threshold to a secondary base station, so that when the secondary base station configures CPC for a UE, the number of CPCs that can be configured by the secondary base station is determined according to the number threshold; wherein the configuration threshold is the number threshold of CPCs that can be configured by the secondary base station, and the number of CPCs that can be configured by the secondary base station is less than or equal to the configuration threshold. Compared with the prior art, in the solution of the embodiment of the present invention, when the SN configures CPC for the UE, the total number of CPCs that can be configured by the SN does not exceed a certain threshold, thereby configuring a reasonable number of CPCs (or CPC configurations) for the UE, avoiding exceeding the processing capacity of the UE, resulting in UE processing errors, and causing communication interruption. After the UE is configured with CPC, the candidate PSCell can be evaluated, and the PSCell update can be performed when the update execution conditions of the candidate PSCell are met, thereby meeting the mobility requirements of the UE.

[0033] Further, the SN may send a CPC quantity threshold configuration request or a CPC quantity threshold modification request to the MN, so that the MN sends / modifies the configuration threshold. Furthermore, even if the MN does not send the configuration threshold to the SN, the SN may perform CPC configuration for the UE according to the first preset threshold.

[0034] Further, in dual connectivity, both the MN and the SN can configure CPC for the UE, and all CPCs configured for the UE by both sides, that is, the number of total CPCs should not exceed the capacity of the UE, which is represented by a second preset threshold. Optionally, the value of the second preset threshold can be defined by a protocol or determined according to the processing capability of the UE, and the second preset threshold can be the same as or different from the first preset threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of a CHO in the prior art;

[0036] Figure 2 A flowchart of a PSCell conditional switching in dual connectivity in the prior art;

[0037] Figure 3 It is a flowchart of a first configuration method for updating PSCell conditions in dual connectivity according to an embodiment of the present invention;

[0038] Figure 4 This is a flowchart of a second configuration method for updating PSCell conditions in dual connectivity according to an embodiment of the present invention;

[0039] Figure 5 This is a flowchart of a third configuration method for updating PSCell conditions in dual connectivity according to an embodiment of the present invention;

[0040] Figure 6This is a structural diagram of a first configuration device for updating PSCell conditions in dual connectivity according to an embodiment of the present invention;

[0041] Figure 7 This is a structural diagram of a second configuration device for updating PSCell conditions in dual connectivity according to an embodiment of the present invention;

[0042] Figure 8 This is a structural diagram of a third configuration device for updating PSCell conditions in dual connectivity according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] As described in the background art, when the conditional switching mechanism is introduced in the existing PSCell Change, the MN or SN configures CPC for the UE, which may cause too much CPC to be configured, exceeding the capacity of the UE.

[0044] For details, please refer to Figure 2 , a flowchart of a conditional change of PSCell in dual connectivity in an embodiment of the present invention is given, which is a process for the primary base station to configure CPC for the UE, and is described in detail through specific steps below.

[0045] Step 1: The UE establishes a dual connection.

[0046] In Release 15 (R15 for short), there is Multi-RAT Dual Connectivity (MR-DC for short). In practical applications, it can be known that there can be different types of dual connections, such as Long Term Evolution (LTE for short) dual connection, LTE and New Radio (NR for short) dual connection, NR dual connection, etc. For LTE and NR dual connections, it can include EN-DC (LTE base station as the main base station of UE, NR base station as the auxiliary base station of UE), NE-DC (NR base station as the main base station of UE, LTE base station as the auxiliary base station of UE), NGEN-DC (LTE base station connected to 5G core network as the main base station of UE, NR base station as the auxiliary base station of UE). The process of establishing dual connection belongs to the prior art, which will not be described in detail in this article. For details, please refer to 3GPP protocol TS37.340.

[0047] Step 2: The UE performs measurement according to the measurement configuration, and reports a measurement report to the network side when the reporting conditions are met.

[0048] In a specific implementation, the UE may perform measurements according to the measurement tasks configured by the master base station (Master Node, MN for short), and then report a measurement report to the master base station when there is a neighboring cell or service cell that meets the reporting conditions. The report carries the identifier and signal quality of the neighboring cell and / or service cell that meets the reporting conditions, that is, the report carries the identifier and signal quality of the neighboring cell that meets the reporting conditions, or the identifier and signal quality of the service cell, or the identifier and signal quality of the neighboring cell and the identifier and signal quality of the service cell.

[0049] Step 3: The primary base station decides to perform primary and secondary cell condition update based on the measurement report.

[0050] Steps 4 and 4A: The primary base station selects one or more candidate primary and secondary cells, and sends a primary and secondary cell condition update request to the base station to which the candidate primary and secondary cells belong, namely the candidate secondary base station, which includes the radio parameters configured for the UE by the primary base station side, especially the secondary base station configuration restriction information (ConfigRestrictInfoSCG) set by the primary base station, as well as the UE capability information and the radio parameters (sourceConfigSCG) configured for the UE by the source secondary base station, etc. The request also includes the trigger condition (Trigger condition or execution condition) for the primary and secondary cell update and the candidate primary and secondary cell identifier, which can be the UE judging whether the candidate primary and secondary cell meets the update condition, and when it meets the condition, the UE executes the primary and secondary cell update (PSCellchange or SN change). The trigger condition can be that the signal quality of the candidate primary and secondary cell is higher than the signal quality of the source primary and secondary cell by a preset offset.

[0051] It should be noted that the primary and secondary cell condition update request may use other names, such as secondary base station condition update request. A UE in dual connection can configure carrier aggregation on the secondary base station side, so the primary and secondary cell condition update request is not limited to the update of the PSCell, but can also include the update of other secondary cells, that is, the candidate secondary base station can configure only the parameters of the candidate PSCell for the UE, or can configure the parameters of the candidate PSCell and the parameters of one or more secondary cells for the UE.

[0052] When the primary base station selects multiple candidate primary and secondary cells, it may send primary and secondary cell condition update requests to the multiple candidate secondary base stations in parallel, or may send primary and secondary cell condition update requests to the multiple candidate secondary base stations successively.

[0053] Steps 5 and 5A: After receiving the primary and secondary cell condition update request, candidate secondary base station 1 and candidate secondary base station 2 perform admission control according to the cell load, etc., and accept the update request if resources permit.

[0054] Steps 6 and 6A: After receiving the update request, candidate secondary base station 1 and candidate secondary base station 2 allocate necessary radio resources, such as random access resources, to the UE, and return a primary and secondary cell condition update confirmation to the primary base station. The confirmation message includes the radio resources configured for the UE, namely, SCG config.

[0055] Step 7: The primary base station sends a signaling of updating the primary and secondary cell conditions to the UE. The primary base station can send multiple primary and secondary cell condition update information at one time through RRC reconfiguration signaling, or can use multiple RRC reconfiguration signaling to send multiple primary and secondary cell condition update information in sequence. One primary and secondary cell condition update information (i.e., one CPC configuration) includes a candidate primary and secondary cell identifier, a triggering condition for the primary and secondary cell update, and a radio resource configured by the candidate secondary base station for the UE. Different candidate primary and secondary cells can have different or the same triggering conditions for the update.

[0056] Step 8: The UE receives the information about the update of the primary and secondary cell conditions, and starts to evaluate whether the candidate primary and secondary cells meet the triggering conditions for the update.

[0057] Step 9: The UE finds that at least one candidate primary and secondary cell meets the triggering condition for the update. If there are multiple candidate primary and secondary cells that meet the triggering condition for the PSCell update, the UE can select the candidate primary and secondary cell with the best signal quality as the target primary and secondary cell for the update, or can randomly select a candidate primary and secondary cell as the target primary and secondary cell for the update.

[0058] Step 10: The UE indicates to the primary base station the determined target primary and secondary cells, that is, the target primary and secondary cells that the UE will access. The UE may indicate to the primary base station the determined target primary and secondary cells to be accessed through RRC signaling, and may indicate the identifier of the cell. After receiving the indication information, the primary base station may forward the data of the data radio bearer established by the UE to the target secondary base station in advance, so that the UE may immediately receive the downlink data sent by the target secondary base station after accessing the target secondary base station.

[0059] Step 11: The UE performs random access through the determined radio resources configured for the UE by the target secondary base station (ie, the radio parameters configured for the UE by the target secondary base station in the CPC configuration corresponding to the target primary and secondary cells), and accesses the target secondary base station.

[0060] Steps 10 and 11 may be performed in parallel. Step 10 is optional.

[0061] Step 12: After the UE successfully accesses the target secondary base station, the target secondary base station sends a primary and secondary cell update completion message to the primary base station.

[0062] Steps 13 and 13A: the primary base station notifies the source secondary base station and other candidate secondary base stations to release the context of the UE.

[0063] For UEs in dual connections, the secondary base station can also configure CPC for the UE. In summary, in the PSCell conditional switching mechanism of the prior art, when both the MN and the SN can configure CPC for the UE, because the number of bits of the CPC related to each candidate PScell ​​may be large, if too many CPCs are configured on both sides (that is, too many corresponding candidate PSCells), it is easy to exceed the capacity of the UE and exceed the processing capability of the UE.

[0064] To solve the above problems, an embodiment of the present invention provides a configuration method for updating PSCell conditions in dual connections, which is applied to a secondary base station. The method includes: when configuring CPC for a UE, determining whether a configuration threshold sent by a primary base station is received, the configuration threshold being a threshold for the number of CPCs that can be configured for the secondary base station; if received, determining the number of CPCs that can be configured for the secondary base station according to the number threshold, the number of CPCs that can be configured for the secondary base station being less than or equal to the configuration threshold.

[0065] Thereby, it can be ensured that in dual connectivity, the total number of CPCs configured by the MN and the SN for the UE does not exceed the capacity of the UE.

[0066] In order to make the above-mentioned purposes, features and beneficial effects of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0067] See also Figure 3 The embodiment of the present invention provides a configuration method for updating a PSCell condition in dual connectivity, the method being executed by the SN side, and the method comprising:

[0068] Step S301, when configuring CPC for UE, determining whether a configuration threshold sent by the primary base station is received, wherein the configuration threshold is a number threshold of CPCs that can be configured by the secondary base station;

[0069] Step S302: if received, the number of CPCs configurable for the secondary base station is determined according to the number threshold, and the number of CPCs configurable for the secondary base station is less than or equal to the configuration threshold.

[0070] Among them, the CPC (also called CPC configuration) in this embodiment is the configuration parameters of the candidate PSCell, which may include the configuration parameters of layer 1, the configuration parameters of layer 2, the configuration parameters of layer 3 and the corresponding PSCell update conditions, etc. Optionally, each CPC corresponds to a candidate PSCell.

[0071] The number of CPCs that the SN can configure for the UE cannot exceed a certain threshold. The threshold can be configured by the MN, i.e., the configuration threshold, which is sent by the MN to the SN. If the MN sets a configuration threshold for the SN, the number of CPCs that the SN can configure for the UE is less than or equal to the configuration threshold.

[0072] Optionally, the method further includes: receiving the configuration threshold sent by the primary base station through a secondary base station adding request or a secondary base station modifying request.

[0073] Optionally, when the MN configures a secondary cell group (SCG) for the UE, that is, when the MN configures a secondary cell for the UE, the MN may send a configuration threshold to the SN; or, when the SCG parameters need to be modified, the MN may send a CPC quantity threshold that the SN can configure to the SN.

[0074] Specifically, the configuration threshold may be sent from the MN to the SN in the following two situations:

[0075] Case 1, please continue to see Figure 2 ,exist Figure 2 Step 1: During the process of UE establishing dual connection, MN sends a request to add secondary base station to secondary base station, so that secondary base station configures radio parameters for UE so that UE can access SN to establish dual connection. Figure 2 In step 1, the configuration threshold is sent to the SN through a secondary base station adding request.

[0076] Case 2: After dual connections are established between the UE and the MN and the SN, if the SCG configuration parameters change, the MN may send the configuration threshold to the SN based on the secondary base station modification request.

[0077] It should be noted that the triggering situations in which the configuration threshold is sent from the MN to the SN include but are not limited to the above situations.

[0078] In this embodiment, when the SN configures CPC for the UE, the total number of CPCs that the SN can configure does not exceed a certain threshold, so that a reasonable number of CPCs (or CPC configurations) are configured for the UE to avoid exceeding the processing capacity of the UE, resulting in UE processing errors and communication interruption. After the UE is configured with CPC, the candidate PSCell can be evaluated and the PSCell update can be performed when the update execution conditions of the candidate PSCell are met, thereby meeting the mobility requirements of the UE.

[0079] Optionally, the configuration threshold is a number threshold of CPCs without MN involvement and / or a number threshold of CPCs with MN involvement.

[0080] Further, the number threshold of non-master base stations participating in CPC may be the number threshold of non-master base stations participating in CPC within an SN (intra-SN) and / or the number threshold of non-master base stations participating in CPC between SNs (inter-SN, ie, between different SNs).

[0081] Among them, CPC involving different band combinations or feature sets is called MN involvement CPC. For UE in dual connection, the radio parameters configured by the current secondary base station for the UE include the band combination and feature set configured by the secondary base station for the UE. The radio parameters configured by the candidate secondary base station for the UE (i.e., CPC configuration) also include the band combination and feature set. The band combination represents a combination of multiple bandwidths, and the feature set represents a set of feature parameters of the UE on each bandwidth. If the band combination or feature set in the CPC is different from the band combination or feature set configured by the source secondary base station for the UE, it is called MN involved CPC configuration (CPC configuration with the participation of the primary base station); if the band combination and feature set in the CPC are the same as the band combination and feature set configured by the source secondary base station for the UE, it is called without MN involvement CPC configuration (CPC configuration without the participation of the primary base station, or CPC configuration that does not require the participation of the primary base station).

[0082] For intra-SN without MN involvement CPC configuration, that is, SN selects a service cell under its jurisdiction as a candidate PSCell for UE. The candidate PSCell configures wireless parameters for UE. At this time, the frequency band combination and feature set in the wireless parameters are the same as the frequency band combination and feature set configured in the current PSCell. SN can send the CPC configuration directly to UE.

[0083] Because the CPC configuration for MN involvement usually needs to be sent by the MN to the UE, after the MN sets the number of CPC configurations without MN involvement for the SN, the MN can control the number of CPC configurations for MN involvement to ensure that the total number of CPCs configured for the UE does not exceed the capacity of the UE.

[0084] For example, MN sets that SN can configure up to 3 CPCs without the participation of the master base station (that is, the configuration threshold is 3). If the protocol sets that the UE can have up to 8 CPC configurations, the MN side can configure up to 5 CPC configurations for the UE, that is, the maximum number of MNinvolvement CPCs is 5. Alternatively, MN sets that SN can configure up to 3 CPCs without the participation of the master base station and 2 CPCs with the participation of the master base station. After SN configures 5 CPCs for the UE, assuming that the UE can configure up to 8 CPCs, the MN can also configure up to 3 CPCs for the UE. These 3 CPCs are MN involved CPC or CPC with MN involvement.

[0085] In one embodiment, please continue to see Figure 2 After determining whether the configuration threshold sent by the primary base station is received in step S201, the method may further include: if the configuration threshold is not received, determining the maximum CPC number that can be configured for the secondary base station according to the first preset threshold.

[0086] If the SN does not receive the configuration threshold sent by the MN, the first preset threshold set according to the protocol provisions, high-level signaling configuration, or other preset rules is used as the number threshold of CPCs that the SN can configure for the UE. That is, the number of CPCs configured by the SN for the UE does not exceed the first preset threshold. For example, the first preset threshold is 8 CPCs, that is, if the MN does not set the configuration threshold for the SN, the SN can configure a maximum of 8 CPCs for the UE.

[0087] Optionally, the method further includes: sending a CPC quantity threshold configuration request or a CPC quantity threshold modification request to the primary base station, so that the primary base station sends the configuration threshold to the secondary base station or updates the configuration threshold.

[0088] Among them, the CPC quantity threshold configuration request is a request sent by the SN to the MN to request the configuration threshold. Optionally, if the SN does not receive the configuration threshold sent by the MN, the CPC quantity threshold configuration request may be sent to the MN. Alternatively, before the SN configures CPC for the UE, the CPC quantity threshold configuration request may be sent to the MN. That is, if the MN does not set a configuration threshold for the SN, the SN configures CPC for the UE based on the first preset threshold; or, if the MN does not set a configuration threshold for the SN, the SN cannot configure CPC for the UE. If CPC needs to be configured, a CPC quantity threshold configuration request may be sent to the MN to trigger the MN setting.

[0089] The CPC quantity threshold modification request is a request sent by the SN to the MN to modify the configuration threshold. Optionally, before the SN configures CPC for the UE, the CPC quantity threshold modification request may be sent to the MN. Alternatively, if the SN finds that the configuration threshold sent by the MN is unreasonable (too large or too small), the CPC quantity threshold modification request may be sent to the MN.

[0090] In this embodiment, the SN may send a CPC quantity threshold configuration request or a CPC quantity threshold modification request to the MN, so that the MN sends / modifies the configuration threshold. Furthermore, even if the MN does not send the configuration threshold to the SN, the SN may perform CPC configuration for the UE according to the first preset threshold.

[0091] See also Figure 4 The embodiment of the present invention further provides a configuration method for updating a PSCell condition in dual connectivity, the method being executed by a MN side, the method comprising:

[0092] Step S401: Send a configuration threshold to a secondary base station, so that when the secondary base station configures CPC for a UE, the secondary base station determines the number of CPCs that can be configured by the secondary base station according to the number threshold;

[0093] The configuration threshold is a number threshold of CPCs that can be configured in the secondary base station, and the number of CPCs that can be configured in the secondary base station is less than or equal to the configuration threshold.

[0094] Optionally, the configuration threshold is a number threshold of CPCs in which no master base station participates and / or a number threshold of CPCs in which a master base station participates.

[0095] Optionally, the method further includes: sending the configuration threshold to the secondary base station through the secondary base station addition request or the secondary base station modification request.

[0096] Optionally, the method further includes: receiving a CPC quantity threshold configuration request or a CPC quantity threshold modification request sent by the secondary base station, and sending the configuration threshold to the secondary base station or updating the configuration threshold.

[0097] about Figure 4 For more information on other working principles and working methods of the method shown, please refer to Figure 3 The relevant description about MN in the method will not be repeated here.

[0098] See also Figure 5 The embodiment of the present invention further provides a configuration method for updating a PSCell condition in dual connectivity, the method being executed by a UE side, the method comprising:

[0099] Step S501, receiving CPC configured by the secondary base station and / or the primary base station, recorded as total CPC;

[0100] Step S502, determining whether the total CPC quantity exceeds a second preset threshold;

[0101] If the total CPC number does not exceed the second preset threshold, that is, the judgment result of step S502 is no, step S503 is executed to perform PSCell update according to the total CPC.

[0102] If the total number of CPCs exceeds the second preset threshold, that is, the judgment result of step S502 is yes, step S504 is executed to select a number of CPCs from the total CPCs according to a preset rule, and perform PSCell update according to the selected CPCs;

[0103] The number of CPCs configured by the secondary base station is less than or equal to a configuration threshold, the configuration threshold is a number threshold of CPCs that can be configured by the secondary base station, and the configuration threshold is sent by the primary base station to the secondary base station.

[0104] When the UE performs PSCell update according to the total CPC or the selected CPC, it evaluates whether multiple candidate PSCells corresponding to the total CPC or the selected CPC meet the update triggering conditions. If so, the PSCell update is performed.

[0105] for Figure 5 In the method shown, the CPC quantity configured by the secondary base station for the UE may not be subject to the threshold limit, the primary base station may not send the CPC quantity threshold to the secondary base station, and the UE selects the CPC quantity that it can process according to its processing capability.

[0106] Optionally, the configuration threshold is a number threshold of CPCs in which no master base station participates and / or a number threshold of CPCs in which a master base station participates.

[0107] Optionally, if the secondary base station does not receive the configuration threshold sent by the primary base station, the number of CPCs configured by the secondary base station is less than or equal to a first preset threshold.

[0108] Optionally, the preset rule includes one of giving priority to the last configured CPCs, giving priority to the CPC configured by the primary base station, giving priority to the CPC configured by the secondary base station, and giving priority to the CPC configured by the secondary base station without the participation of the primary base station.

[0109] In dual connectivity, both the MN and the SN can configure CPC for the UE, and all CPCs configured for the UE by both sides, that is, the total number of CPCs, should not exceed the capacity of the UE, which is represented by a second preset threshold. Optionally, the value of the second preset threshold may be defined by a protocol or determined according to the processing capability of the UE, and the second preset threshold may be the same as or different from the first preset threshold.

[0110] When the number of total CPCs exceeds a second preset threshold, the UE may select a number of CPCs from the total CPCs for application according to a certain rule (ie, a preset rule), and not apply the rest.

[0111] The preset rule may be defined by a protocol, or determined according to high-level signaling, or determined according to the processing capability and requirements of the UE itself.

[0112] For example, the UE receives CPC configurations sent by both sides, and after receiving the CPC configurations, preferentially applies the last configured number (which may be a second preset threshold number) of CPCs, that is, applies the latest configured CPC.

[0113] Optionally, the UE may also apply the first several CPCs.

[0114] For another example, after receiving CPCs configured by both sides, the UE preferentially applies CPC configured by the MN, or preferentially applies CPC configured by the SN, or preferentially applies CPC without MN involvement, as long as the number of CPCs applied by the UE does not exceed the second preset threshold.

[0115] Optionally, after selecting a number of CPCs from the total CPCs according to a preset rule, the method further includes: deleting configurations of CPCs that are not selected.

[0116] That is, unselected CPCs may be deleted to release storage space and improve the processing capability of the UE.

[0117] Optionally, if the UE coordinates the number of CPCs that can be configured through the second preset threshold, there is no need for the MN and the SN to negotiate the number of CPCs that each configures for the UE.

[0118] about Figure 5 For more information on other working principles and working methods of the method shown, please refer to Figure 3 The relevant description of the method will not be repeated here.

[0119] See also Figure 6 The embodiment of the present invention further provides a configuration device 60 for updating a PSCell condition in a dual connection, comprising:

[0120] The configuration threshold reception judgment module 601 is used to judge whether the configuration threshold sent by the primary base station is received when configuring CPC for the UE, where the configuration threshold is a number threshold of CPCs that can be configured by the secondary base station;

[0121] The CPC configuration module 602 is configured to determine the number of CPCs configurable for the secondary base station according to the number threshold if received, and the number of CPCs configurable for the secondary base station is less than or equal to the configuration threshold.

[0122] about Figure 6 For more information on the working principle and working method of the configuration device 60 for updating the PSCell condition in dual connectivity, please refer to Figure 3 The relevant description of the method will not be repeated here.

[0123] See also Figure 7 The embodiment of the present invention further provides a configuration device 70 for updating a PSCell condition in a dual connection, comprising:

[0124] The configuration threshold sending module 701 is configured to send a configuration threshold to the secondary base station, so that when the secondary base station configures CPC for the UE, the secondary base station determines the number of CPCs that can be configured by the secondary base station according to the number threshold;

[0125] The configuration threshold is a number threshold of CPCs that can be configured in the secondary base station, and the number of CPCs that can be configured in the secondary base station is less than or equal to the configuration threshold.

[0126] about Figure 7 For more information on the working principle and working method of the configuration device 70 for updating PSCell conditions in dual connectivity, please refer to Figure 4 The relevant description of the method will not be repeated here.

[0127] See also Figure 8 The embodiment of the present invention further provides a configuration device 80 for updating a PSCell condition in dual connectivity, comprising:

[0128] The configuration receiving module 801 is used to receive the CPC configured by the secondary base station and / or the primary base station, which is recorded as the total CPC;

[0129] A determination module 802 is used to determine whether the total CPC quantity exceeds a second preset threshold;

[0130] Directly use module 803, if the total CPC number does not exceed the second preset threshold, to perform PSCell update according to the total CPC;

[0131] The CPC selection module 804 is used to select a number of CPCs from the total CPCs according to a preset rule if the total number of CPCs exceeds a second preset threshold, and perform PSCell update according to the selected CPCs;

[0132] The number of CPCs configured by the secondary base station is less than or equal to a configuration threshold, the configuration threshold is a number threshold of CPCs that can be configured by the secondary base station, and the configuration threshold is sent by the primary base station to the secondary base station.

[0133] about Figure 8For more information on the working principle and working method of the configuration device 80 for updating the PSCell condition in dual connectivity, please refer to Figure 5 The relevant description of the method will not be repeated here.

[0134] The embodiment of the present invention further provides a storage medium on which a computer program is stored, and the computer program is executed by a processor. Figures 3 to 5 The steps of the method described in the illustrated embodiment. The storage medium may be a computer-readable storage medium, for example, may include a non-volatile memory or a non-transitory memory, and may also include an optical disk, a mechanical hard disk, a solid-state hard disk, etc.

[0135] Specifically, in the embodiment of the present invention, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0136] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0137] The embodiment of the present invention further provides a base station, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the above-mentioned Figure 3 or Figure 4 The steps of the method described in the illustrated embodiment.

[0138] The embodiment of the present invention further provides a terminal (ie, UE), comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the above-mentioned Figure 5 The steps of the method described in the illustrated embodiment. The terminal includes but is not limited to mobile phones, computers, tablet computers and other devices.

[0139] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0140] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0141] The "plurality" appearing in the embodiments of the present application refers to two or more.

[0142] The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the description objects. There is no order, nor do they indicate any special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0143] The "connection" that appears in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitations on this.

[0144] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A configuration method for updating PSCell conditions in dual connectivity, characterized in that: The method comprises: When configuring CPC for the UE, determining whether a configuration threshold sent by the primary base station is received, wherein the configuration threshold is a threshold for the number of CPCs that can be configured by the secondary base station; the configurable CPC includes no primary base station participating in CPC and / or the primary base station participating in CPC; If received, the number of CPCs configurable for the secondary base station is determined according to the number threshold, and the number of CPCs configurable for the secondary base station is less than or equal to the configuration threshold.

2. The method according to claim 1, characterized in that: The method further comprises: The configuration threshold is received, which is sent by the primary base station through a secondary base station adding request or a secondary base station modifying request.

3. The method according to claim 1, characterized in that After determining whether the configuration threshold sent by the primary base station is received, the method further includes: If the configuration threshold is not received, the maximum number of CPCs configurable for the secondary base station is determined according to the first preset threshold.

4. The method according to claim 1, characterized in that The method further comprises: Send a CPC quantity threshold configuration request or a CPC quantity threshold modification request to the primary base station, so that the primary base station sends the configuration threshold to the secondary base station or updates the configuration threshold.

5. A configuration method for updating PSCell conditions in dual connectivity, characterized in that: The method comprises: Sending a configuration threshold to the secondary base station, so that when the secondary base station configures CPC for the UE, the secondary base station determines the number of CPCs that can be configured by the secondary base station according to the number threshold; the configurable CPC includes no primary base station participating in CPC and / or the primary base station participating in CPC; The configuration threshold is a number threshold of CPCs that can be configured in the secondary base station, and the number of CPCs that can be configured in the secondary base station is less than or equal to the configuration threshold.

6. The method according to claim 5, characterized in that The method further comprises: The configuration threshold is sent to the secondary base station through the secondary base station adding request or the secondary base station modifying request.

7. The method according to claim 5, characterized in that The method further comprises: receiving a CPC quantity threshold configuration request or a CPC quantity threshold modification request sent by the secondary base station, and sending the configuration threshold to the secondary base station or updating the configuration threshold.

8. A configuration method for updating PSCell conditions in dual connectivity, characterized in that: The method comprises: Receive CPC configured by the secondary base station and / or the primary base station, recorded as total CPC; Determining whether the total CPC quantity exceeds a second preset threshold; If the total CPC number does not exceed the second preset threshold, performing PSCell update according to the total CPC; If the total number of CPCs exceeds a second preset threshold, select a number of CPCs from the total CPCs according to a preset rule, and perform PSCell update according to the selected CPCs; Among them, the number of CPCs configured by the secondary base station is less than or equal to the configuration threshold, the configuration threshold is the number threshold of CPCs that can be configured by the secondary base station, and the configuration threshold is sent by the main base station to the secondary base station; the configurable CPC includes no main base station participating in CPC and / or the main base station participating in CPC.

9. The method according to claim 8, characterized in that If the secondary base station does not receive the configuration threshold sent by the primary base station, the number of CPCs configured by the secondary base station is less than or equal to the first preset threshold.

10. The method according to claim 8, characterized in that The preset rule includes one of giving priority to the last configured CPCs, giving priority to the CPC configured by the master base station, giving priority to the CPC configured by the secondary base station, and giving priority to the CPC configured by the secondary base station without the participation of the master base station.

11. The method according to claim 8, characterized in that After selecting a number of CPCs from the total CPCs according to a preset rule, the method further includes: Delete the configuration of CPCs that are not selected.

12. A configuration device for updating PSCell conditions in dual connectivity, characterized in that: The device comprises: A configuration threshold receiving judgment module is used to judge whether a configuration threshold sent by a primary base station is received when configuring CPC for a UE, wherein the configuration threshold is a threshold for the number of CPCs that can be configured by a secondary base station; the configurable CPC includes no primary base station participating in CPC and / or the primary base station participating in CPC; The CPC configuration module is configured to determine the number of CPCs configurable for the secondary base station according to the number threshold if any CPCs are received, and the number of CPCs configurable for the secondary base station is less than or equal to the configuration threshold.

13. A configuration device for updating PSCell conditions in dual connectivity, characterized in that: The device comprises: A configuration threshold sending module is used to send a configuration threshold to the secondary base station, so that when the secondary base station configures CPC for the UE, the secondary base station determines the number of CPCs that can be configured by the secondary base station according to the number threshold; the configurable CPC includes no primary base station participating in CPC and / or the primary base station participating in CPC; The configuration threshold is a number threshold of CPCs that can be configured in the secondary base station, and the number of CPCs that can be configured in the secondary base station is less than or equal to the configuration threshold.

14. A configuration device for updating PSCell conditions in dual connectivity, characterized in that: The device comprises: A configuration receiving module is used to receive CPC configured by the secondary base station and / or the primary base station, which is recorded as the total CPC; A judging module, used to judge whether the total CPC quantity exceeds a second preset threshold; directly using the module, for performing PSCell update according to the total CPC if the total CPC number does not exceed a second preset threshold; A CPC selection module, if the total number of CPCs exceeds a second preset threshold, for selecting a number of CPCs from the total CPCs according to a preset rule, and performing PSCell update according to the selected CPCs; Among them, the number of CPCs configured by the secondary base station is less than or equal to the configuration threshold, the configuration threshold is the number threshold of CPCs that can be configured by the secondary base station, and the configuration threshold is sent by the main base station to the secondary base station; the configurable CPC includes no main base station participating in CPC and / or the main base station participating in CPC.

15. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are executed.

16. A base station, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor performs the steps of the method according to any one of claims 1 to 4, or any one of 5 to 7.

17. A terminal comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to any one of claims 8 to 11 are performed.

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