Conditional handover method, information transmission method, processing method, apparatus and equipment

Abstract

The present disclosure provides a conditional handover method, an information transmission method, an information processing method, an apparatus, and a device. The method is executed by a terminal connected to a source primary cell (PCell) and a primary secondary cell (PSCell). When there is a target primary cell (PCell) that satisfies a first handover event and the PSCell satisfies a second handover event, the method includes performing a conditional handover procedure from the source PCell to the target PCell.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the priority of Chinese Patent Application No. 202210792461.1, filed in China on July 5, 2022, and all of its content is incorporated herein by reference. This disclosure relates to the field of communication technologies, and particularly to conditional handover methods, information transmission methods, processing methods, apparatuses, and devices.

Background Art

[0002] Conditional Handover (CHO) is a mechanism to enhance the robustness of handover procedures. The method of performing conditional handover in a dual - connection scenario in related technologies may lead to a decline in the service experience of User Equipment (UE).

Summary of the Invention

Problems to be Solved by the Invention

[0003] The objective of this disclosure is to provide a conditional handover method, information transmission method, processing method, apparatus, and device that can avoid the problem of the decline in the service experience of a terminal due to conditional handover in a dual - connection scenario and improve the service experience of the terminal.

Means for Solving the Problems

[0004] To achieve the above objective, in a first aspect, this disclosure provides a conditional handover method executed by a terminal connected to a Primary Cell (PCell) and a Primary Secondary Cell (PSCell), including performing a conditional handover procedure from a source PCell to a target PCell when there is a target PCell that meets a first handover event and the PSCell meets a second handover event.

[0005] Selectively, the above method, Receiving first and second configuration information of a conditional handover transmitted from a network-side device, the first configuration information being for instructing the first handover event that the target PCell must satisfy when the PCell performs a conditional handover, and the second configuration information being for instructing the second handover event that the PSCell must satisfy. In accordance with the first configuration information, determine the target PCell that satisfies the first handover event, The further includes determining whether the PSCell satisfies the second handover event according to the second configuration information.

[0006] Selectively, the first configuration information includes one or more candidate target PCells and the first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover, for each of the candidate target PCells. In accordance with the first configuration information, determining the target PCell that satisfies the first handover event means that In accordance with the first configuration information, a first candidate target PCell is selected from among the one or more candidate target PCells that satisfy the corresponding first handover event. This includes confirming the aforementioned first candidate target PCell as the target PCell.

[0007] Selectively, the second configuration information includes the second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover, which corresponds to the PSCell.

[0008] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0009] Selectively, the first configuration information and the second configuration information are configured by the master node, or the first configuration information is configured by the master node and the second configuration information is configured by the secondary node.

[0010] In the second phase, the present disclosure relates to an information transmission method performed by network-side equipment, The present invention further provides an information transmission method that includes transmitting first configuration information and second configuration information for a conditional handover to a terminal, the first configuration information being for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is executed, and the second configuration information being for instructing a second handover event that the PSCell must satisfy.

[0011] Selectively, the first configuration information includes one or more candidate target PCells and the first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover, for each of the candidate target PCells, and the second configuration information includes the second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover, for the PSCell.

[0012] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0013] Selectively, the network-side equipment includes a master node and / or a secondary node.

[0014] In the third phase, the present disclosure relates to an information transmission method performed by a terminal, Further including transmitting primary information related to the success or failure of a conditional handover to network-side equipment, The aforementioned first information includes: The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, The present invention further provides an information transmission method that includes at least one of the following: the time when a handover event that triggers a conditional handover for PCell is met, and a second time difference which is the difference between the time when a handover event that triggers a conditional handover for PSCell is met.

[0015] Selectively, the above method, The system further includes receiving first and second configuration information for a conditional handover transmitted from a network-side device, the first configuration information being for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is performed, and the second configuration information being for instructing a second handover event that the PSCell must satisfy.

[0016] Optionally, the first configuration information includes one or more candidate target PCells, and the first handover event that triggers conditional handover corresponding to each of the candidate target PCells and / or a threshold value corresponding to the first handover event, and the second configuration information includes the second handover event that triggers conditional handover corresponding to the PSCell and / or a threshold value corresponding to the second handover event.

[0017] In a fourth aspect, the present disclosure is an information processing method executed by a network-side device, receiving first information transmitted from a terminal; and adjusting configuration information of conditional handover configured for the terminal according to the first information. The first information includes a related identifier of a cell that triggers conditional handover; a handover event that triggers conditional handover; a threshold value corresponding to the handover event that triggers conditional handover; a network-side device that configures conditional handover for the terminal; a first time difference that is a difference between the time when the configuration information of conditional handover is received by the terminal and the time when the handover event of conditional handover is satisfied; related event information when the handover event that triggers conditional handover is satisfied; and further provides an information processing method including at least one of a second time difference that is a difference between the time when the handover event that triggers conditional handover corresponding to the PCell is satisfied and the time when the handover event that triggers conditional handover corresponding to the PSCell is satisfied.

[0018] Optionally, the method Further including transmitting to the terminal first configuration information and second configuration information for conditional handover, which are configuration information for instructing a first handover event that a target PCell needs to satisfy when performing conditional handover of a PCell, and second configuration information for instructing a second handover event that a PSCell needs to satisfy.

[0019] Optionally, the first configuration information includes one or more candidate target PCells, and for each of the candidate target PCells, the first handover event that triggers conditional handover and / or a threshold value corresponding to the first handover event. The second configuration information includes the second handover event that triggers conditional handover corresponding to the PSCell and / or a threshold value corresponding to the second handover event.

[0020] In a fifth aspect, the present disclosure is a conditional handover apparatus executed by a terminal connected to a source primary cell (PCell) and a primary secondary cell (PSCell), When there exists a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event, further providing a conditional handover apparatus including a handover module for executing a conditional handover procedure from the source PCell to the target PCell.

[0021] In a sixth aspect, the present disclosure is an information transmission apparatus executed by a network-side device, The present invention further provides an information transmission device, which includes a first transmission module for transmitting first configuration information and second configuration information for a conditional handover to a terminal, the first configuration information being for instructing a first handover event that a target PCell must satisfy when a PCell conditional handover is executed, and the second configuration information being for instructing a second handover event that a PSCell must satisfy.

[0022] In the seventh phase, the present disclosure relates to an information transmission device implemented by a terminal, Includes a second transmission module for sending primary information related to the success or failure of a conditional handover to network-side equipment, The aforementioned first information includes: The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, The present invention further provides an information transmission device that includes at least one of the following: the time at which a handover event that triggers a conditional handover for PCell is met, and a second time difference which is the difference between the time at which a handover event that triggers a conditional handover for PSCell is met.

[0023] In the eighth phase, the present disclosure relates to an information processing device executed by network-side equipment, A third receiving module for receiving the first information transmitted from the terminal, It includes a third processing module for adjusting the configuration information of a conditional handover configured for the terminal in accordance with the first information, The aforementioned first information includes: The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, The present invention further provides an information processing device that includes at least one of the following: the time at which a handover event that triggers a conditional handover for PCell is met, and a second time difference which is the difference between the time at which a handover event that triggers a conditional handover for PSCell is met.

[0024] In the ninth phase, the present disclosure relates to a terminal including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor A terminal is further provided for performing a conditional handover procedure from a source PCell to a target PCell if a target primary cell (PCell) exists that satisfies the first handover event, and the PSCell satisfies the second handover event.

[0025] In the tenth aspect, the present disclosure relates to a network-side device including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor The present invention further provides a network-side device for performing a procedure to transmit first and second configuration information for a conditional handover to a terminal via the aforementioned transceiver, the first configuration information being for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is performed, and the second configuration information being for instructing a second handover event that the PSCell must satisfy.

[0026] In the eleventh phase, the present disclosure relates to a terminal including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor This is a procedure for transmitting primary information related to the success or failure of a conditional handover to network-side equipment via a transceiver. The aforementioned first information includes: The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, The present invention further provides a terminal that includes at least one of the following: the time at which a handover event that triggers a conditional handover, corresponding to PCell, is met, and a second time difference, which is the difference between the time at which a handover event that triggers a conditional handover, corresponding to PSCell, is met.

[0027] In the twelfth aspect, the present disclosure relates to a network-side device including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor is A procedure for receiving first information transmitted from a terminal via the aforementioned transceiver, This is for performing a procedure to adjust the configuration information of a conditional handover configured for the terminal in accordance with the aforementioned first information, The aforementioned first information includes: The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, The present invention further provides network-side equipment that includes at least one of the following: the time at which a handover event that triggers a conditional handover, corresponding to PCell, is met, and a second time difference, which is the difference between the time at which a handover event that triggers a conditional handover, corresponding to PSCell, is met.

[0028] In the thirteenth phase, the disclosure further provides a terminal including memory, a processor, and a program stored in the memory and operable on the processor, wherein when the processor executes the program, the conditional handover method described in the first phase or the information transmission method described in the third phase is realized.

[0029] In the fourteenth aspect, the present disclosure further provides a network-side device including a memory, a processor, and a program stored in the memory and operable on the processor, wherein when the processor executes the program, the information transmission method described in the second aspect or the information processing method described in the fourth aspect is realized.

[0030] In the fifteenth phase, the present disclosure further provides a computer-readable storage medium storing a computer program, wherein when the program is executed by a processor, the steps in the conditional handover method described in the first phase are realized, or the steps in the information transmission method described in the second phase are realized, or the steps in the information transmission method described in the third phase are realized, or the steps in the information processing method described in the fourth phase are realized. [Effects of the Invention]

[0031] The above-described technical aspects of this disclosure have at least the following beneficial effects. In the embodiments of this disclosure, terminals connected to a source primary cell PCell and a primary secondary cell PSCell execute a conditional handover procedure from the source PCell to the target PCell if a target primary cell (PCell) that satisfies the first handover event exists and the PSCell satisfies the second handover event. Therefore, in a dual-connection scenario, the terminal must consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell. Only when both conditions are met can the primary cell conditional handover, i.e., the conditional handover procedure from the source PCell to the target PCell, be executed. This avoids the problem of degraded service experience for terminals due to conditional handover in a dual-connection scenario and improves the service experience for terminals. [Brief explanation of the drawing]

[0032] [Figure 1] This is a schematic diagram showing the flow of a conditional handover method according to an embodiment of the present disclosure. [Figure 2] This is a schematic diagram showing the flow of the information transmission method according to the embodiment of this disclosure. [Figure 3] This is a schematic diagram 2 showing the flow of the information transmission method according to the embodiment of this disclosure. [Figure 4] This is a schematic diagram showing the flow of the information processing method according to the embodiments of this disclosure. [Figure 5] This is a schematic diagram showing a module of a conditional handover device according to an embodiment of the present disclosure. [Figure 6] This is a schematic diagram 1 showing a module of an information transmission device according to an embodiment of the present disclosure. [Figure 7] This is schematic diagram 2 showing a module of an information transmission device according to an embodiment of the present disclosure. [Figure 8] This is a schematic diagram showing a module of an information processing device according to an embodiment of the present disclosure. [Figure 9] This is a schematic diagram showing the hardware structure of a terminal according to an embodiment of the present disclosure. [Figure 10] This is a schematic diagram 2 showing the hardware structure of a network-side device according to an embodiment of the present disclosure. [Figure 11] This is a schematic diagram 2 showing the hardware structure of a terminal according to an embodiment of the present disclosure. [Figure 12] This is a schematic diagram 2 showing the hardware structure of a network-side device according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0033] To further clarify the problems, technical embodiments, and advantages that this disclosure aims to solve, they will be described in detail below with reference to the drawings and specific examples.

[0034] In the relevant conditional handover mechanism, when the quality of the wireless connection between the User Equipment (UE) and the serving cell is still relatively good, the base station can configure a conditional handover command for the UE according to the UE's measurement report, which may carry events for the UE to voluntarily perform a handover, such as A3 and / or A5 events, and may also carry resources such as random access for the UE to use in the target cell.

[0035] Once the UE detects that a conditional handover event has been met, the UE voluntarily initiates a random access procedure to the target base station or cell. This improves the robustness of the handover procedure because it avoids the UE being unable to successfully complete the handover procedure due to a sudden deterioration of the channel between the UE and the serving cell (particularly during high-frequency deployment or high-speed terminal movement), which could result from the UE failing to receive the handover (HO) instruction sent from the serving base station.

[0036] In dual-connection scenarios, the Secondary Cell Group (SCG) is typically used to provide high-rate data services to the UE. The relevant technology, when performing conditional handovers in dual-connection scenarios, configures the CHO's trigger events (e.g., A3 / A5 events) based solely on measurement information from the PCell or Master Cell Group (MCG), without considering the status of the PSCell or SCG. This can lead to disruptions in the UE's high-rate data services due to the PCell conditional handover being triggered while the PScell ​​quality is still relatively good, or to impact the UE's service experience after the handover because the current PSCell and the new PCell are not dual-connected (the current PSCell and the new PCell are not necessarily dual-connected).

[0037] To solve the above problems, this disclosure provides a conditional handover method, an information transmission method, a processing method, an apparatus, and an apparatus.

[0038] Figure 1 is a schematic flowchart of a conditional handover method according to an embodiment of the present disclosure, which, as shown in the figure, is performed by a terminal, which is connected to a source primary cell PCell and a primary secondary cell PSCell, respectively, that is, the terminal is in a dual-connection scene. The method may specifically include the following step 101.

[0039] Step 101 is to execute a conditional handover procedure from the source PCell to the target PCell if there is a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event.

[0040] It should be explained that a PCell as referred to in this disclosure may be understood as an MCG or Master Node (MN), and a PSCell may be understood as an SCG or Secondary Node (SN).

[0041] In the embodiments of this disclosure, an adjacent cell specifically refers to a PCell adjacent to a serving cell. A serving cell specifically refers to a cell (PCell and / or PSCell) currently connected to a terminal.

[0042] Performing the conditional handover procedure from source PCell to target PCell described above may also involve applying a conditional configuration to the target PCell or PSCell.

[0043] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0044] Here, an A3 event refers to a situation where the signal quality of an adjacent cell is higher than the signal quality of the serving cell by a certain threshold. In this embodiment, the serving cell referred to in an A3 event is the PCell currently connected to the terminal.

[0045] An A5 event refers to a situation where the signal quality of a serving cell is below a certain threshold, while the signal quality of an adjacent cell is above a certain threshold. In this embodiment, the serving cell referred to in an A5 event is the PCell currently connected to the terminal.

[0046] An A2 event refers to a situation where the signal quality of a serving cell falls below a certain threshold. In this embodiment, the serving cell referred to in an A2 event is the PSCell currently connected to the terminal.

[0047] An A4 event occurs when the signal quality of an adjacent cell is above a certain threshold.

[0048] The first event refers to a situation where the terminal's first preset parameter in PSCell or SCG is below a certain threshold, and the first preset parameter includes, but is not limited to, data rate, throughput, and bandwidth. Alternatively, the first event refers to a situation where the second preset parameter of the terminal's data packet transmission via PSCell or SCG is above a certain threshold, and the second preset parameter includes, but is not limited to, delay, number of retransmissions (e.g., Radio Link Control (RLC) retransmissions), and packet loss rate.

[0049] What needs to be explained is that if PSCell satisfies the first event, it means that the quality of service provided to the terminal by SN, SCG, or PSCell is not good, for example, the data rate is not high, or the data packet delay is too high, or the number of retransmissions is high, or the packet loss rate is high.

[0050] Based on this, if a target PCell exists that satisfies the first handover event, it means that the signal quality of the target PCell is a certain threshold higher than the signal quality of the serving cell. Furthermore, if the PSCell satisfies the second handover event, it means that the quality of service provided to the terminal by the serving PSCell is not high (corresponding to event A2) or that there is one adjacent PSCell of particularly good quality (corresponding to event A4). Only in this case can the conditional handover procedure from the source PCell to the target PCell be triggered.

[0051] If a target PCell exists that satisfies the first handover event, but the PSCell does not satisfy the second handover event, it means that the signal quality of the PCell currently serving the terminal is poor, while the quality of service of the PSCell serving the terminal is good, or that no particularly good target or adjacent PSCell could be found. Since the PCell serving the terminal primarily carries signaling, and the transmission of signaling is not continuous and uninterrupted, the impact of differences in PCell signal quality on signaling transmission is not significant. As long as the PSCell's quality of service is good, the PSCell can continue to provide high-rate data services to the terminal. In this case, the conditional handover procedure from the source PCell to the target PCell does not need to be performed, thus reducing UE handovers. This allows the UE to use the high-speed data services provided by the PSCell or SCG as much as possible, and as a result, the objective of improving the UE's service experience is achieved.

[0052] As one optional implementation, the method according to the embodiment of the present disclosure may further include the following steps S11 to S13 before step 101.

[0053] S11 is the reception of first and second configuration information for a conditional handover transmitted from the network-side device, the first configuration information being for instructing the first handover event that the target PCell must satisfy when the PCell performs a conditional handover, and the second configuration information being for instructing the second handover event that the PSCell must satisfy.

[0054] What needs to be explained is that the terminal may receive one piece of information containing first and second configuration information, or it may receive two pieces of information, one of which contains first configuration information and the other containing second configuration information.

[0055] Here, the network-side equipment configures the terminal with first and second configuration information for conditional handover, so that the terminal determines the target PCell that satisfies the first handover event according to the first configuration information, and determines whether the PSCell satisfies the second handover event according to the second configuration information.

[0056] The first configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event, while the second configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event.

[0057] S12 is to determine the target PCell that satisfies the first handover event according to the first configuration information.

[0058] Selectively, the first configuration information includes one or more candidate target PCells and, for each candidate target PCell, a first handover event that triggers a conditional handover and / or a threshold value corresponding to the first handover event.

[0059] Accordingly, step S12 may include the following steps S121 to S122.

[0060] S121 is to select a first candidate target PCell that satisfies the corresponding first handover event from among one or more candidate target PCells according to the first configuration information.

[0061] Specifically, the terminal performs cell measurements on the serving cell and one or more candidate target PCells (adjacent cells) around the serving cell, obtains the measurement results, and selects a first candidate target PCell from among the one or more candidate target PCells that satisfies the corresponding first handover event according to the measurement results and first configuration information.

[0062] It should be explained that the measurement results include the signal quality of the PCell serving the terminal, parameter values ​​representing the quality of service of the PSCell serving the terminal, and the signal quality of one or more candidate target PCells.

[0063] S122 is to confirm the first candidate target PCell as the target PCell.

[0064] The first candidate target PCell becomes the target PCell because it satisfies the corresponding first handover event.

[0065] S13 is to determine whether the PSCell satisfies the second handover event according to the second configuration information.

[0066] Selectively, the second configuration information includes a second handover event corresponding to the PSCell that triggers a conditional handover, and / or a threshold value corresponding to the second handover event.

[0067] In step S121 described above, the terminal performs cell measurements on the serving cell and one or more candidate target PCells (adjacent cells) around the serving cell, and obtains measurement results. The measurement results include the signal quality of the PCell serving the terminal, parameter values ​​representing the quality of service of the PSCell serving the terminal, and the signal quality of one or more candidate target PCells.

[0068] This step may specifically include determining whether the PScell ​​satisfies the second handover event according to the parameter values ​​representing the quality of service of the PSCell serving the terminal and the second configuration information.

[0069] In one example, if the second handover event is an A2 event, then the PScell ​​is determined to satisfy the A2 event if its signal quality is lower than the threshold value for the A2 event.

[0070] In another example, if the second handover event is an A4 event, then the adjacent or target PScell ​​is determined to satisfy the A4 event if the signal quality of the adjacent or target PScell ​​is higher than the threshold value for the A4 event.

[0071] In another example, if the second handover event is an A3 event, then the adjacent or target PScell ​​is determined to satisfy the A3 event if the signal quality of the adjacent or target PScell ​​is higher than the threshold value for the A3 event compared to the serving PScell.

[0072] In another example, if the second handover event is an A5 event, then the adjacent or target PScell ​​is determined to satisfy the A5 event if the signal quality of the serving PScell ​​is lower than a certain threshold value and the signal quality of the adjacent or target PScell ​​is higher than another threshold value.

[0073] Selectively, the target PSCell and target PCell can be dual-connected, meaning the UE can perform a dual connection after being handed over to the PCell and PSCell.

[0074] Additionally, a conditional handover of a PSCell may be referred to as a Conditional Secondary Cell Change (CPC).

[0075] In another example, if the second handover event is the first event, and the first event refers to the first preset parameter of the terminal in PSCell or SCG being lower than a certain threshold, then accordingly, if the first preset parameter of the terminal in PSCell or SCG is lower than the threshold value of the first event, then it is determined that PSCell satisfies the first event.

[0076] In yet another example, if the second handover event is the first event, and the first event refers to the second preset parameter of the terminal's data packet transmission via PSCell or SCG being higher than a certain threshold, then accordingly, if the second preset parameter of the terminal's data packet transmission via PSCell or SCG is higher than the threshold value of the first event, then it is determined that PSCell satisfies the first event.

[0077] Selectively, the first and second configuration information are configured by the master node, or the first configuration information is configured by the master node and the second configuration information is configured by the secondary node. Of these, both the master node and the secondary node are network-side devices.

[0078] Here, the first configuration information and the second configuration information may be configured independently by MN, or they may be configured jointly by MN and SN.

[0079] Furthermore, when the first configuration information and the second configuration information are jointly configured by MN and SN, the first configuration information is configured by MN and the second configuration information is configured by SN.

[0080] The technical advantage of configuring the second configuration information using SN lies in the ability to configure a threshold for the UE corresponding to the second handover event, taking into account the load needs of the SCG itself. For example, if the second handover event is an A2 event, a high A2 event threshold can be configured for the UE so that the UE can easily trigger a conditional handover when the SCG load is high. Conversely, a low A2 event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered. Also, for example, if the second handover event is a first event, and the first event refers to the first preset parameter of the terminal in the PSCell or SCG being below a certain threshold, then a high first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover when the SCG load is high. Conversely, a low first event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered. Furthermore, for example, if the second handover event is the first event, and the first event refers to the second preset parameter of the terminal's data packet transmission via PSCell or SCG being higher than a certain threshold, then when the SCG load is high, a low first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover, or conversely, a high first event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered.

[0081] As one optional implementation method, step S11 may specifically include the following step S111a.

[0082] Step S111a is to receive the first and second configuration information of the conditional handover transmitted from the MN.

[0083] In this implementation method, on the MN side, the first configuration information and the second configuration information may be independently configured by the MN and transmitted from the MN to the terminal, or the first configuration information and the second configuration information may be jointly configured by the MN and the SN, and after the configuration of the second configuration information is completed by the SN, the second configuration information may be transmitted to the MN, and the first configuration information and the second configuration information may be transmitted from the MN to the terminal.

[0084] As another optional implementation, step S11 may specifically include the following steps S111b to S112b.

[0085] Step S111b is to receive the first configuration information transmitted from the MN.

[0086] Step S112b is to receive the second configuration information transmitted from SN.

[0087] This implementation method corresponds to the case in which the first configuration information and the second configuration information are jointly configured by MN and SN, and in which the first configuration information is configured by MN and the second configuration information is configured by SN.

[0088] As one optional implementation, the method according to the embodiment of the present disclosure may further include the following step S10 before step S11.

[0089] S10 is to send a measurement report to the master node to trigger the network-side equipment to configure conditional handover configuration information for the terminal.

[0090] What needs to be explained is that the MN decides to configure the first and second configuration information for the conditional handover for the UE in accordance with the measurement report sent from the UE. Alternatively, the MN decides to configure the first configuration information for the UE in accordance with the measurement report sent from the UE and notifies the SN to configure the second configuration information for the UE, or the SN decides to configure the second configuration information for the UE itself without requiring notification.

[0091] According to the conditional handover method of the embodiment of this disclosure, terminals connected to a source primary cell PCell and a primary secondary cell PSCell execute a conditional handover procedure from source PCell to target PCell if a target primary cell (PCell) that satisfies the first handover event exists and the PSCell satisfies the second handover event. Therefore, in a dual connection scenario, terminals must consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell. Only when both conditions are met can a primary cell conditional handover, i.e., a conditional handover procedure from source PCell to target PCell, be executed. This avoids the problem of a decrease in the terminal's service experience due to conditional handover in a dual connection scenario and improves the terminal's service experience.

[0092] Figure 2 is a schematic flowchart of an information transmission method according to an embodiment of the present disclosure, and as shown in the figure, the method is performed by network-side equipment. Specifically, the method may include the following step 201.

[0093] Step 201 is to send first and second configuration information for a conditional handover to the terminal, which is first configuration information that instructs the target PCell to satisfy a first handover event when the PCell performs a conditional handover, and second configuration information that instructs the PSCell to satisfy a second handover event.

[0094] It should be explained that the network-side device may send one piece of information containing the first configuration information and the second configuration information to the terminal, or the network-side device may send two pieces of information to the terminal, one of which contains the first configuration information and the other of which contains the second configuration information.

[0095] Of these, the target PCell is a PCell adjacent to the PCell serving the terminal. A PSCell is a primary secondary cell that serves the terminal.

[0096] The first configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event, while the second configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event.

[0097] According to the information transmission method of the embodiment of this disclosure, the network-side equipment transmits first and second configuration information of conditional handover to the terminal, that is, the network-side equipment configures the first and second configuration information of conditional handover for the terminal, for the purpose of enabling the terminal to determine the target PCell that satisfies the first handover event according to the first configuration information, and to determine whether the PSCell satisfies the second handover event according to the second configuration information. Thus, in a dual-connection scenario, the terminal must consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell, and only when both are satisfied can the primary cell conditional handover be performed. This avoids the problem of a decrease in the terminal's service experience due to conditional handover in a dual-connection scenario, and improves the terminal's service experience.

[0098] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0099] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0100] Selectively, network-side equipment includes a master node and / or secondary nodes.

[0101] As one optional implementation, the method according to the embodiment of the present disclosure may further include the following steps S21 to S22 before step 201.

[0102] S21 is to receive the measurement report sent from the terminal.

[0103] S22 is to configure the conditional handover configuration information for the terminal according to the measurement report.

[0104] Here, the configuration information may be configured independently by MN, or it may be configured jointly by MN and SN.

[0105] Furthermore, if the configuration information is jointly configured by the master node and the secondary node, in one selective implementation, step S22 may specifically include the following steps S221a to S222a.

[0106] Step S221a is for MN to send a notification message to SN instructing SN to configure first configuration information for the terminal and second configuration information for the terminal according to the measurement report.

[0107] Step S222a is for SN to configure the second configuration information for the terminal after receiving the notification message.

[0108] In other words, the first configuration information is configured by the MN, and the second configuration information is configured by the secondary node.

[0109] In another optional implementation, step S22 may specifically include the following steps S221b to S222b.

[0110] Step S221b is for the MN to configure the first configuration information for the terminal according to the measurement report.

[0111] Step S222b is for SN to configure the second configuration information for the terminal.

[0112] The two implementation methods described above correspond to the case where the MN decides to configure the first configuration information for the UE based on the measurement report sent from the UE and notifies the SN to configure the second configuration information for the UE, or the case where the SN decides to configure the second configuration information for the UE without requiring notification.

[0113] Figure 3 is a schematic flowchart of an information transmission method according to an embodiment of the present disclosure, and as shown in the figure, the method is performed by a terminal, and the method may specifically include the following step 301.

[0114] Step 301 is to send primary information related to the success or failure of the conditional handover to the network-side equipment.

[0115] Of these, the primary information includes at least one of the following (1) to (7): (1) The associated identifier of the cell that triggers the conditional handover. (2) A handover event that triggers a conditional handover. Here, a handover event refers to a first handover event corresponding to PCell (e.g., A3 event and / or A5 event) and a second handover event corresponding to PSCell (e.g., A2 event, A4 event, or first event) configured by the network-side equipment for the terminal. (3) The threshold value corresponding to the handover event that triggers a conditional handover. (4) A network-side device that configures conditional handover for the terminal. (5) The first time difference is the difference between the time when the terminal receives the configuration information for the conditional handover and the time when the handover event for the conditional handover is met. Here, the first time difference may be the difference between the time when the first configuration information corresponding to the PCell is received by the terminal and the time when the first handover event is fulfilled, or it may be the difference between the time when the second configuration information corresponding to the PSCell is received by the terminal and the time when the second handover event is fulfilled. If the time at which the first configuration information is received by the terminal is the same as the time at which the second configuration information is received by the terminal, the first time difference may be the difference between the time at which the first and second configuration information are received by the terminal and the time at which both handover events (the first handover event and the second handover event) are fulfilled (or the time at which the later handover event is fulfilled). If the time at which the first configuration information is received by the terminal and the time at which the second configuration information is received by the terminal are different, the first time difference may be the difference between the time the configuration information received first (first or second configuration information) is received and the time when both handover events are satisfied (or the time when the later handover event is satisfied), or it may be the difference between the time the configuration information received later (first or second configuration information) is received and the time when both handover events are satisfied (or the time when the later handover event is satisfied). Here, the event being fulfilled may be expressed as the UE triggering a conditional handover or the UE applying the configuration of a conditional handover. For example, if the first time lag is very large, it means that the handover will occur a considerable amount of time after the UE receives the configuration. Conversely, if the configuration is too early, it means that the network-side target cell reserves resources for the UE for too long, resulting in wasted resources. The network side needs to reduce the first time lag by readjusting the configuration timing for conditional handovers (e.g., delaying the configuration) or related parameters. (6) This is related event information that satisfies the handover event that triggers a conditional handover. (7) The second time difference is the difference between the time when the handover event that triggers a conditional handover for the PCell is met and the time when the handover event that triggers a conditional handover for the PSCell is met. For example, if the second time lag is very large, the PSCell may not meet the handover conditions until a considerable time has passed since the PCell met them, which means the UE may experience a Radio Link Failure (RLF) on the source PCell. Conversely, if the PCell may not meet the handover conditions until a considerable time has passed since the PSCell met them, the UE may experience poor quality dual connectivity on both the source PCell and PSCell. The network side needs to readjust the conditional handover configuration parameters so that the second time lag is as small as possible, and most preferably so that the PCell and PSCell handover events are met simultaneously.

[0116] Here, if the network-side equipment receives primary information related to the success or failure of the conditional handover, it will determine, based on that primary information, whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If they are not appropriate, it will readjust the conditional handover configuration information. Thus, the terminal will determine the target PCell that satisfies the primary handover event and whether the PSCell satisfies the secondary handover condition according to the adjusted conditional handover configuration information. Ultimately, this achieves the objective of avoiding the problem of degraded terminal service experience due to conditional handover in dual-connection scenarios and improving the terminal service experience.

[0117] In one selective implementation, the method according to the embodiment of the present disclosure may further include the following step 300 prior to step 301.

[0118] Step 300 is to record the primary information related to the success or failure of the conditional handover.

[0119] Since the configuration information for a conditional handover previously issued by the network-side device is adjusted by the network-side device, in one selective implementation, the method according to an embodiment of the present disclosure may further include step S31 prior to step 301.

[0120] S31 is the reception of first and second configuration information for a conditional handover transmitted from the network-side device, the first configuration information being for instructing the first handover event that the target PCell must satisfy when the PCell conditional handover is executed, and the second configuration information being for instructing the second handover event that the PSCell must satisfy.

[0121] The first configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event, while the second configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event.

[0122] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0123] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0124] Here, the network-side equipment configures the terminal with first and second configuration information for conditional handover, so that the terminal determines the target PCell that satisfies the first handover event according to the first configuration information, and determines whether the PSCell satisfies the second handover event according to the second configuration information.

[0125] Selectively, the first configuration information and the second configuration information may be configured independently by the MN, or jointly by the MN and the SN.

[0126] Furthermore, when the first configuration information and the second configuration information are jointly configured by MN and SN, the first configuration information is configured by MN and the second configuration information is configured by SN.

[0127] The technical advantage of configuring the second configuration information using SN lies in the ability to configure a threshold for the UE corresponding to the second handover event, taking into account the load needs of the SCG itself. For example, if the second handover event is an A2 event, a high A2 event threshold can be configured for the UE so that the UE can easily trigger a conditional handover when the SCG load is high. Conversely, a low A2 event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered. Also, for example, if the second handover event is a first event, and the first event refers to the first preset parameter of the terminal in the PSCell or SCG being below a certain threshold, a high first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover when the SCG load is high. Conversely, a low first event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered. Furthermore, for example, if the second handover event is the first event, and the first event refers to the second preset parameter of the terminal's data packet transmission via PSCell or SCG being higher than a certain threshold, then when the SCG load is high, a low first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover, or conversely, a high first event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered.

[0128] As one optional implementation method, step S31 may specifically include the following step S311a.

[0129] Step S311a is to receive the first and second configuration information of the conditional handover transmitted from the MN.

[0130] In this implementation method, on the MN side, the first configuration information and the second configuration information may be independently configured by the MN and transmitted from the MN to the terminal, or the first configuration information and the second configuration information may be jointly configured by the MN and the SN, and after the configuration of the second configuration information is completed by the SN, the second configuration information may be transmitted to the MN, and the first configuration information and the second configuration information may be transmitted from the MN to the terminal.

[0131] As another optional implementation method, step S11 may specifically include the following steps S311b to S312b.

[0132] Step S311b is to receive the first configuration information transmitted from the MN.

[0133] Step S312b is to receive the second configuration information transmitted from SN.

[0134] This implementation method corresponds to the case in which the first configuration information and the second configuration information are jointly configured by MN and SN, and in which the first configuration information is configured by MN and the second configuration information is configured by SN.

[0135] As one optional implementation, the method according to the embodiment of the present disclosure may further include the following step S30 before step S31.

[0136] S30 is to send a measurement report to the master node to trigger the network-side equipment to configure conditional handover configuration information for the terminal.

[0137] What needs to be explained is that the MN decides to configure the first and second configuration information for the conditional handover for the UE in accordance with the measurement report sent from the UE. Alternatively, the MN decides to configure the first configuration information for the UE in accordance with the measurement report sent from the UE and notifies the SN to configure the second configuration information for the UE, or the SN decides to configure the second configuration information for the UE itself without requiring notification.

[0138] If first information related to a conditional handover failure is recorded by the terminal, it means that the configuration timing and configuration parameters of the conditional handover configuration information previously configured for the terminal by the network-side equipment were inappropriate and require adjustment. If first information related to a conditional handover success is recorded by the terminal, it is possible to determine, based on the first information, whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If they are inappropriate, adjustment is required, and the network-side equipment adjusts the conditional handover configuration information according to the first information reported by the terminal.

[0139] Selectively, the threshold values ​​corresponding to handover events that trigger a conditional handover include the threshold value corresponding to the first handover event that triggers the conditional handover, and / or the threshold value corresponding to the second handover event that triggers the conditional handover.

[0140] The network-side equipment that configures the conditional handover configuration information for the terminal includes the MN and / or SN, where the purpose of recording the network-side equipment that configures the conditional handover for the terminal is to instruct the terminal which network-side equipment (e.g., the MN or the SN) to send the first information to.

[0141] The first time difference is the difference between the time the first configuration information is received by the terminal and the time the first handover event is fulfilled. If the first time difference is greater than or equal to the first preset threshold, it means that the first time difference is too long, and the network-side equipment is configuring the first configuration information too early. In this case, the network-side equipment needs to delay the configuration of the first configuration information.

[0142] The first time difference is the difference between the time the first configuration information is received by the terminal and the time the first handover event is fulfilled. If the first time difference is smaller than the first preset threshold, it means that the first time difference is too short, and the network-side equipment is too late in configuring the first configuration information. In this case, the network-side equipment needs to speed up the configuration of the first configuration information.

[0143] The first time difference is the difference between the time the second configuration information is received by the terminal and the time the second handover event is fulfilled. If the first time difference is greater than or equal to the second preset threshold, it means that the first time difference is too long, and the network-side equipment is configuring the second configuration information too early. In this case, the network-side equipment needs to delay the configuration of the second configuration information.

[0144] The first time difference is the difference between the time the second configuration information is received by the terminal and the time the second handover event is fulfilled. If the first time difference is smaller than the second preset threshold, it means that the first time difference is too short, and the network-side equipment is too late in configuring the second configuration information. In this case, the network-side equipment needs to speed up the configuration of the second configuration information.

[0145] Here, regarding the relevant event information that satisfies a handover event that triggers a conditional handover, the relevant event information may include one or more of the following: the specific handover event that is satisfied (e.g., whether it is the first handover event, the second handover event, or both); the time order in which they are satisfied (e.g., whether the first handover event or the event for PCell is satisfied first or last, or whether the second handover event or the event for PSCell is satisfied first or last); information on whether the handover event that is satisfied is for PCell, for PSCell, or both; and the time difference between when the first handover event (or the event for PCell) and the second handover event (or the event for PSCell) are satisfied.

[0146] For example, if the first handover event is triggered but the second handover event is not, and the first information is recorded by the UE before the second handover event is triggered, or if the trigger time of the first handover event is earlier than the trigger time of the second handover event, and the difference between the two (i.e., the second time difference) is greater than or equal to the third preset threshold, then it means that the trigger hurdle for the configured second handover event needs to be adjusted. For example, if the second handover event is an A2 event, the trigger hurdle for the A2 event needs to be lowered, and specifically, the threshold value for the A2 event needs to be increased so that the UE can trigger the conditional handover earlier. If the first event refers to the terminal's first preset parameter in PSCell or SCG being below a certain threshold, the threshold for triggering the first event should be lowered, specifically increasing the threshold value for the first event so that the UE can trigger a conditional handover earlier. If the second handover event is the first event, and the first event refers to the terminal's second preset parameter for data packet transmission via PSCell or SCG being above a certain threshold, the threshold for triggering the first event should be higher, specifically decreasing the threshold value for the first event so that the UE can trigger a conditional handover earlier. If the second handover event is triggered but the first handover event has not yet been triggered, and the UE has recorded the first information, or if the trigger time of the second handover event is earlier than the trigger time of the first handover event, and the difference between the two (i.e., the second time difference) is greater than or equal to the third preset threshold, then it means that the trigger hurdle for the configured second handover event needs to be adjusted. For example, if the second handover event is an A2 event, the trigger hurdle for the A2 event needs to be adjusted higher, specifically, the threshold value for the A2 event needs to be lowered so that the UE can trigger the conditional handover later. If the first event refers to the terminal's first preset parameter in PSCell or SCG being below a certain threshold, the hurdle for triggering the first event should be adjusted higher, specifically lowering the threshold value for the first event so that the UE can trigger a conditional handover later. If the second handover event is the first event, and the first event refers to the second preset parameter of the terminal's data packet transmission via PSCell or SCG being above a certain threshold, the hurdle for triggering the first event should be adjusted lower, specifically raising the threshold value for the first event so that the UE can trigger a conditional handover later.

[0147] Figure 4 is a schematic flowchart of an information processing method according to an embodiment of the present disclosure, and as shown in the figure, the method is performed on network-side equipment, and the method may specifically include the following steps 401 to 402.

[0148] Step 401 is to receive the initial information sent from the terminal.

[0149] Selectively, the primary information is information related to the success or failure of a conditional handover between terminals, as recorded by the terminal.

[0150] Step 402 is to adjust the configuration information for the conditional handover configured for the terminal according to the first information. Among them, the first information was, The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, It includes at least one of the following: the time when a handover event that triggers a conditional handover for PCell is met, and the second time difference, which is the difference between the time when a handover event that triggers a conditional handover for PSCell is met.

[0151] Here, after receiving the first information, the network-side equipment determines, based on the first information, whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If they are not appropriate, it readjusts the conditional handover configuration information. In this way, the terminal determines the target PCell that satisfies the first handover event according to the adjusted conditional handover configuration information, and also determines whether the PSCell satisfies the second handover condition. Ultimately, the objective of avoiding the problem of degraded terminal service experience due to conditional handover in dual-connection scenarios and improving the terminal service experience is achieved.

[0152] Since the configuration information for a conditional handover previously issued by the network-side device is adjusted by the network-side device, in one selective implementation, the method according to an embodiment of the present disclosure may further include the following step S41 before step 401.

[0153] S41 is to send first and second configuration information for a conditional handover to the terminal, which is first configuration information for instructing the first handover event that the target PCell must satisfy when a PCell conditional handover is executed, and second configuration information for instructing the second handover event that the PSCell must satisfy.

[0154] It should be explained that the network-side device may send one piece of information containing the first configuration information and the second configuration information to the terminal, or the network-side device may send two pieces of information to the terminal, one of which contains the first configuration information and the other of which contains the second configuration information.

[0155] The first configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event, while the second configuration information may include a specific handover event that triggers the configured conditional handover and a threshold value corresponding to the handover event.

[0156] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0157] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0158] Here, the network-side equipment configures the terminal with first and second configuration information for conditional handover. The purpose of this is to enable the terminal to determine the target PCell that satisfies the first handover event according to the first configuration information, and to determine whether the PSCell satisfies the second handover event according to the second configuration information.

[0159] Selectively, the first configuration information and the second configuration information may be configured independently by MN, independently by SN, or jointly by MN and SN.

[0160] Furthermore, when the first configuration information and the second configuration information are jointly configured by MN and SN, the first configuration information is configured by MN and the second configuration information is configured by SN.

[0161] The technical advantage of configuring the second configuration information using SN lies in the ability to configure a threshold for the UE corresponding to the second handover event, taking into account the load needs of the SCG itself. For example, if the second handover event is an A2 event, a high A2 event threshold can be configured for the UE so that the UE can easily trigger a conditional handover when the SCG load is high. Conversely, a low A2 event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered. Also, for example, if the second handover event is a first event, and the first event refers to the first preset parameter of the terminal in the PSCell or SCG being below a certain threshold, a high first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover when the SCG load is high. Conversely, a low first event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered. Furthermore, for example, if the second handover event is the first event, and the first event refers to the second preset parameter of the terminal's data packet transmission via PSCell or SCG being higher than a certain threshold, then when the SCG load is high, a low first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover, or conversely, a high first event threshold can be configured so that the UE can remain in the current serving cell as much as possible and a conditional handover is not triggered.

[0162] As one optional implementation, the method according to the embodiment of the present disclosure may further include the following steps S51 to S52 before step S41.

[0163] S51 is to receive the measurement report sent from the terminal.

[0164] S52 is to configure the conditional handover configuration information for the terminal according to the measurement report.

[0165] Here, the configuration information may be configured independently by MN, or it may be configured jointly by MN and SN.

[0166] Furthermore, if the configuration information is composed of a master node and a secondary node, in one selective implementation, step S52 may specifically include the following steps S521a to S522a.

[0167] Step S521a is for MN to send a notification message to SN instructing SN to configure first configuration information for the terminal and second configuration information for the terminal according to the measurement report.

[0168] Step S522a is for SN to configure the second configuration information for the terminal after receiving the notification message.

[0169] In other words, the first configuration information is configured by the MN, and the second configuration information is configured by the secondary node.

[0170] In another optional implementation, step S52 may specifically include the following steps S521b to S522b.

[0171] Step S521b is for the MN to configure the first configuration information for the terminal according to the measurement report.

[0172] Step S522b is for SN to configure the second configuration information for the terminal.

[0173] The two implementation methods described above correspond to the case where the MN decides to configure the first configuration information for the UE based on the measurement report sent from the UE and notifies the SN to configure the second configuration information for the UE, or the case where the SN decides to configure the second configuration information for the UE without requiring notification.

[0174] As one optional implementation method, step S41 may specifically include the following step S411a.

[0175] Step S411a is for the MN to send the first and second configuration information for the conditional handover to the terminal.

[0176] In this implementation method, on the MN side, the first configuration information and the second configuration information may be independently configured by the MN and transmitted from the MN to the terminal, or the first configuration information and the second configuration information may be jointly configured by the MN and the SN, and after the configuration of the second configuration information is completed by the SN, the second configuration information may be transmitted to the MN, and the first configuration information and the second configuration information may be transmitted from the MN to the terminal.

[0177] As another optional implementation method, step S41 may specifically include the following steps S411b to S412b.

[0178] Step S411b is for the MN to send the first configuration information to the terminal.

[0179] Step S412b is for SN to send second configuration information to the terminal.

[0180] This implementation method corresponds to a case where configuration information is jointly configured by MN and SN, and the first configuration information is configured by MN and the second configuration information is configured by SN.

[0181] What needs to be explained is that the MN decides to configure the conditional handover configuration information for the UE based on the measurement report sent from the UE. Alternatively, the MN decides to configure the first configuration information for the UE based on the measurement report sent from the UE and notifies the SN to configure the second configuration information for the UE, or the SN decides to configure the second configuration information for the UE itself without requiring notification.

[0182] If first information related to a conditional handover failure is recorded by the terminal, it means that the configuration timing and configuration parameters of the conditional handover configuration information previously configured for the terminal by the network-side equipment were inappropriate and require adjustment. If first information related to a conditional handover success is recorded by the terminal, it is possible to determine, based on the first information, whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If they are inappropriate, adjustment is required, and the network-side equipment adjusts the conditional handover configuration information according to the first information reported by the terminal.

[0183] In one selective implementation, step 402 is: The first time difference is the difference between the time the first configuration information is received by the terminal and the time the first handover event is fulfilled, and if the first time difference is greater than or equal to the first preset threshold, the configuration timing of the first configuration information is delayed. The first time difference is the difference between the time the first configuration information is received by the terminal and the time the first handover event is fulfilled, and if the first time difference is smaller than the first preset threshold, the configuration timing of the first configuration information is advanced. The first time difference is the difference between the time the second configuration information is received by the terminal and the time the second handover event is fulfilled, and if the first time difference is greater than or equal to the second preset threshold, the configuration timing of the second configuration information is delayed. The first time difference is the difference between the time the second configuration information is received by the terminal and the time the second handover event is fulfilled, and if the first time difference is smaller than the second preset threshold, the configuration timing of the second configuration information may be advanced.

[0184] In another selective implementation, the second handover event is the A2 event, and accordingly, step 402 is: If, according to the relevant event information that satisfies the handover event that triggers a conditional handover, it is determined that the first handover event was triggered but the second handover event was not, or if the trigger time of the first handover event is earlier than the trigger time of the second handover event, and the second time difference is greater than or equal to the third preset threshold, then the threshold value corresponding to the A2 event is increased. This may include lowering the threshold value corresponding to the A2 event if, according to the relevant event information that satisfies the handover event that triggers a conditional handover, it is determined that a second handover event was triggered but the first handover event was not triggered, or if the trigger time of the second handover event is earlier than the trigger time of the first handover event and the second time difference is greater than or equal to the third preset threshold.

[0185] In another selective implementation, the second handover event is the first event, and the first event refers to the first preset parameter of the terminal in the PSCell or SCG being lower than a certain threshold, and accordingly, step 402, If, according to the relevant event information that satisfies the handover event that triggers a conditional handover, it is determined that the first handover event was triggered but the second handover event was not, or if the trigger time of the first handover event is earlier than the trigger time of the second handover event, and the second time difference is greater than or equal to the third preset threshold, then the threshold value corresponding to the first event is increased. This may include lowering the threshold value corresponding to the first event if, according to the relevant event information that satisfies the handover event that triggers a conditional handover, a second handover event is triggered but the first handover event is not triggered, or if the trigger time of the second handover event is earlier than the trigger time of the first handover event and the second time difference is greater than or equal to the third preset threshold.

[0186] In yet another selective implementation, the second handover event is the first event, and the first event refers to the second preset parameter of the terminal's data packet transmission via PSCell or SCG being higher than a certain threshold, and accordingly, step 402, If, according to the relevant event information that satisfies the handover event that triggers a conditional handover, it is determined that the first handover event was triggered but the second handover event was not, or if the trigger time of the first handover event is earlier than the trigger time of the second handover event, and the second time difference is greater than or equal to the third preset threshold, then the threshold value of the first event is lowered. This may include raising the threshold value of the first event if, according to the relevant event information that satisfies the handover event that triggers a conditional handover, a second handover event is triggered but the first handover event is not triggered, or if the trigger time of the second handover event is earlier than the trigger time of the first handover event and the second time difference is greater than or equal to the third preset threshold.

[0187] To more favorably achieve the above objectives, as shown in Figure 5, embodiments of the present disclosure further provide a conditional handover device operated by terminals connected to a source primary cell PCell and a primary secondary cell PSCell, the device, The system includes a handover module 501 for executing a conditional handover procedure from a source PCell to a target PCell if a target primary cell (PCell) exists that satisfies a first handover event and the PSCell satisfies a second handover event.

[0188] Selectively, the apparatus according to the embodiments of this disclosure is A first receiving module for receiving first and second configuration information of a conditional handover transmitted from a network-side device, the first configuration information being for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is executed, and the second configuration information being for instructing a second handover event that the PSCell must satisfy. A first processing module for determining the target PCell that satisfies the first handover event according to the first configuration information, The module further includes a second processing module to determine whether the PSCell satisfies the second handover event according to the second configuration information.

[0189] Selectively, the first configuration information includes one or more candidate target PCells and, for each candidate target PCell, a first handover event that triggers a conditional handover and / or a threshold value corresponding to the first handover event. Accordingly, the first processing module, A first processing unit for selecting a first candidate target PCell that satisfies the corresponding first handover event from among one or more candidate target PCells according to the first configuration information, It includes a second processing unit for confirming the first candidate target PCell as the target PCell.

[0190] Selectively, the second configuration information includes a second handover event corresponding to the PSCell that triggers a conditional handover, and / or a threshold value corresponding to the second handover event.

[0191] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0192] Selectively, the first and second configuration information are configured by the master node, or the first configuration information is configured by the master node and the second configuration information is configured by the secondary node.

[0193] According to the conditional handover device of the embodiment of this disclosure, if there is a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event, the conditional handover procedure from the source PCell to the target PCell is executed. Therefore, in a dual connection scene, the terminal must consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell. Only when both conditions are met can the primary cell conditional handover, i.e., the conditional handover procedure from the source PCell to the target PCell, be executed. This avoids the problem of a decrease in the terminal's service experience due to conditional handover in a dual connection scene and improves the terminal's service experience.

[0194] As shown in Figure 6, embodiments of the present disclosure further provide an information transmission device that is performed by network-side equipment, the device is The system includes a first transmission module 601 for transmitting first and second configuration information for a conditional handover to a terminal, the first configuration information being for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is executed, and the second configuration information being for instructing a second handover event that the PSCell must satisfy.

[0195] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0196] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0197] Selectively, network-side equipment includes a master node and / or secondary nodes.

[0198] According to the information transmission device of the embodiment of this disclosure, first and second configuration information for conditional handover are transmitted to the terminal, that is, the network-side equipment configures the first and second configuration information for conditional handover for the terminal, for the purpose of enabling the terminal to determine the target PCell that satisfies the first handover event according to the first configuration information, and to determine whether the PSCell satisfies the second handover event according to the second configuration information. Thus, in a dual-connection scenario, the terminal must consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell, and only when both are satisfied can the primary cell conditional handover be performed. This avoids the problem of a decrease in the terminal's service experience due to conditional handover in a dual-connection scenario, and improves the terminal's service experience.

[0199] As shown in Figure 7, embodiments of the present disclosure further provide an information transmission device that is performed by a terminal, the device is Includes a second transmitting module 701 for transmitting first information related to the success or failure of a conditional handover to network-side equipment, Among them, the first information was, The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, It includes at least one of the following: the time when a handover event that triggers a conditional handover for PCell is met, and the second time difference, which is the difference between the time when a handover event that triggers a conditional handover for PSCell is met.

[0200] Selectively, the apparatus according to the embodiments of this disclosure is The system further includes a second receiving module for receiving first and second configuration information of a conditional handover transmitted from a network-side device, the first configuration information being for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is performed, and the second configuration information being for instructing a second handover event that the PSCell must satisfy.

[0201] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0202] According to the information transmission device of the embodiment of this disclosure, first information relating to the success or failure of a conditional handover is transmitted to the network-side device. Upon receiving the first information, the network-side device determines, based on the first information, whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If they are not appropriate, the network-side device readjusts the conditional handover configuration information. Thus, the terminal determines the target PCell that satisfies the first handover event and whether the PSCell satisfies the second handover condition according to the adjusted conditional handover configuration information. Ultimately, the objective of avoiding the problem of degraded terminal service experience due to conditional handover in dual-connection scenarios and improving the terminal service experience is achieved.

[0203] As shown in Figure 8, embodiments of the present disclosure further provide an information processing device that is executed by a network-side device, the device is A third receiving module 801 for receiving the first information transmitted from the terminal, It includes a third processing module 802 for adjusting the configuration information of a conditional handover configured for a terminal according to the first information, Among them, the first information was, The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, It includes at least one of the following: the time when a handover event that triggers a conditional handover for PCell is met, and the second time difference, which is the difference between the time when a handover event that triggers a conditional handover for PSCell is met.

[0204] Selectively, the apparatus according to the embodiments of this disclosure is The system further includes a third transmission module for transmitting first and second configuration information for a conditional handover to a terminal, the first configuration information being for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is executed, and the second configuration information being for instructing a second handover event that the PSCell must satisfy.

[0205] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0206] According to the information processing device of the embodiment of this disclosure, the device receives first information transmitted from a terminal, and after receiving the first information, determines whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate based on the first information. If they are not appropriate, the device readjusts the conditional handover configuration information. In this way, the terminal determines a target PCell that satisfies the first handover event according to the adjusted conditional handover configuration information, and determines whether the PSCell satisfies the second handover condition. Ultimately, the objective of avoiding the problem of a decrease in the terminal's service experience due to conditional handover in a dual-connection scenario and improving the terminal's service experience is achieved.

[0207] As shown in Figure 9, an embodiment of the present disclosure further provides a terminal connected to a source primary cell PCell and a primary secondary cell PSCell, the terminal further including a processor 900 and a transceiver 910, the terminal further including a user interface 920, and the processor 900 is This procedure is designed to execute a conditional handover procedure from a source PCell to a target PCell if a target primary cell (PCell) exists that satisfies the first handover event, and that PCell satisfies the second handover event.

[0208] Selectively, the transceiver 910 is, This is for receiving first and second configuration information of a conditional handover transmitted from a network-side device, the first configuration information being for instructing the first handover event that the target PCell must satisfy when a PCell conditional handover is executed, and the second configuration information being for instructing the second handover event that the PSCell must satisfy. Accordingly, the processor 900, Based on the first configuration information, determine the target PCell that satisfies the first handover event. This also serves to determine whether the PSCell satisfies the second handover event according to the second configuration information.

[0209] Selectively, the first configuration information includes one or more candidate target PCells and, for each candidate target PCell, a first handover event that triggers a conditional handover and / or a threshold value corresponding to the first handover event. Accordingly, the processor 900, According to the first configuration information, a first candidate target PCell that satisfies the corresponding first handover event is selected from among one or more candidate target PCells. This also serves to confirm the first candidate target PCell as the target PCell.

[0210] Selectively, the second configuration information includes a second handover event corresponding to the PSCell that triggers a conditional handover, and / or a threshold value corresponding to the second handover event.

[0211] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0212] Selectively, the first and second configuration information are configured by the master node, or the first configuration information is configured by the master node and the second configuration information is configured by the secondary node.

[0213] According to the terminal of the embodiment of this disclosure, if there is a target primary cell (PCell) that satisfies the first handover event, and the PSCell satisfies the second handover event, the terminal executes a conditional handover procedure from the source PCell to the target PCell. Therefore, in a dual connection scenario, the terminal must consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell. Only when both conditions are met can the primary cell conditional handover, i.e., the conditional handover procedure from the source PCell to the target PCell, be executed. This avoids the problem of degraded service experience in the terminal due to conditional handover in a dual connection scenario, and improves the service experience of the terminal.

[0214] As shown in Figure 10, an embodiment of the present disclosure further provides network-side equipment including a processor 1000 and a transceiver 1010, wherein the processor 1000 is This procedure involves transmitting first and second configuration information for a conditional handover to a terminal via the transceiver 1010. The first configuration information is for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is performed, and the second configuration information is for instructing a second handover event that the PSCell must satisfy.

[0215] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0216] Selectively, the first handover event includes the A3 event and / or the A5 event, the second handover event is the A2 event, the A4 event, or the first event, and the first event is a newly defined event.

[0217] Selectively, network-side equipment includes a master node and / or secondary nodes.

[0218] According to the network-side equipment of the embodiment of this disclosure, first and second configuration information for conditional handover is transmitted to the terminal, that is, the network-side equipment configures the first and second configuration information for conditional handover for the terminal, for the purpose of enabling the terminal to determine the target PCell that satisfies the first handover event according to the first configuration information, and to determine whether the PSCell satisfies the second handover event according to the second configuration information. Thus, in a dual-connection scenario, the terminal must consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell, and only when both are satisfied can the primary cell conditional handover be performed. This avoids the problem of a decrease in the terminal's service experience due to conditional handover in a dual-connection scenario, and improves the terminal's service experience.

[0219] As shown in Figure 11, an embodiment of the present disclosure further provides a terminal including a processor 1100 and a transceiver 1110, the terminal further including a user interface 1120, and the processor 1100 is This is for performing a procedure to transmit primary information related to the success or failure of a conditional handover to network-side equipment via the transceiver 1110. Among them, the first information was, The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, It includes at least one of the following: the time when a handover event that triggers a conditional handover for PCell is met, and the second time difference, which is the difference between the time when a handover event that triggers a conditional handover for PSCell is met.

[0220] Selectively, the transceiver 1110, This device is also used to receive the first and second configuration information for a conditional handover transmitted from a network-side device. The first configuration information is for instructing the target PCell to fulfill a first handover event when a PCell conditional handover is performed, and the second configuration information is for instructing the PSCell to fulfill a second handover event.

[0221] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0222] According to the terminal according to the embodiment of this disclosure, first information related to the success or failure of the recorded conditional handover is transmitted to the network-side equipment. Upon receiving the first information, the network-side equipment determines, based on the first information, whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If they are not appropriate, the network-side equipment readjusts the conditional handover configuration information. Thus, the terminal determines the target PCell that satisfies the first handover event and whether the PSCell satisfies the second handover condition according to the adjusted conditional handover configuration information. Ultimately, the objective of avoiding the problem of degraded terminal service experience due to conditional handover in dual-connection scenarios and improving the terminal service experience is achieved.

[0223] As shown in Figure 12, an embodiment of the present disclosure further provides network-side equipment including a processor 1200 and a transceiver 1210, wherein the processor 1200 is A procedure for receiving the first information transmitted from the terminal via the transceiver 1210, This is for performing a procedure to adjust the configuration information of a conditional handover configured for a terminal according to the first information, Among them, the first information was, The associated identifier of the cell that triggers the conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, It includes at least one of the following: the time when a handover event that triggers a conditional handover for PCell is met, and the second time difference, which is the difference between the time when a handover event that triggers a conditional handover for PSCell is met.

[0224] Selectively, the transceiver 1210, The first and second configuration information for conditional handover are used to send to the terminal the first configuration information, which is for instructing the target PCell to satisfy the first handover event that the PCell must satisfy when a PCell conditional handover is executed, and the second configuration information, which is for instructing the PSCell to satisfy the second handover event that the PSCell must satisfy.

[0225] Selectively, the first configuration information includes one or more candidate target PCells and a first handover event and / or threshold value corresponding to the first handover event that trigger a conditional handover for each candidate target PCell, while the second configuration information includes a second handover event and / or threshold value corresponding to the second handover event that trigger a conditional handover for the PSCell.

[0226] According to the network-side equipment of the embodiment of this disclosure, it receives first information transmitted from the terminal, and after receiving the first information, it determines whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate based on the first information. If they are not appropriate, it readjusts the conditional handover configuration information. In this way, the terminal determines the target PCell that satisfies the first handover event according to the adjusted conditional handover configuration information, and also determines whether the PSCell satisfies the second handover condition. Ultimately, the objective of avoiding the problem of degraded terminal service experience due to conditional handover in dual-connection scenarios and improving the terminal service experience is achieved.

[0227] Embodiments of this disclosure further provide a terminal including memory, a processor, and a computer program stored in memory and operable on the processor, wherein when the processor executes the program, each step in the embodiment of the conditional handover method described above is realized, or each step in the embodiment of the information transmission method described above is realized, and the same technical effects can be achieved, but to avoid duplication, they will not be repeated here.

[0228] Embodiments of this disclosure further provide network-side equipment including memory, a processor, and a computer program stored in memory and operable on the processor, wherein when the processor executes the program, each step in the embodiment of the information transmission method described above is realized, or each step in the embodiment of the information processing method described above is realized, and the same technical effects can be achieved, but to avoid duplication, they will not be repeated here.

[0229] Embodiments of this disclosure further provide a computer-readable storage medium storing a computer program, and when the program is executed by a processor, each step in the embodiment of the conditional handover method described above is realized, or each step in the embodiment of the information transmission method described above is realized, or each step in the embodiment of the information processing method described above is realized, and the same technical effects can be achieved, but to avoid duplication, they will not be repeated here. Among these, the computer-readable storage medium is, for example, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0230] Those skilled in the art can understand that the embodiments of the present disclosure can be provided as a method, a system, or a computer program product. Therefore, the embodiments of the present disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to magnetic disk memory, optical memory, etc.) containing computer-usable program code.

[0231] The present disclosure is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present disclosure. Each flow and / or block in the flowchart and / or block diagram, and combinations of flows and / or blocks in the flowchart and / or block diagram, should be understood to be realized by computer program instructions. These computer program instructions are provided to the processor of a general-purpose computer, a dedicated computer, an embedded processing device, or other programmable data processing device to form a single machine, and by the instructions executed by the processor of the computer or other programmable data processing device, an apparatus is formed for realizing the functions specified by one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0232] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a specific manner, and a product including an instruction device is formed by the instructions stored in the computer-readable storage medium. The instruction device realizes the functions specified by one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0233] These computer program instructions may be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus thereby forming a process realized on the computer, and to provide steps for realizing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram by instructions executed on the computer or other programmable data processing apparatus.

[0234] The above are the preferred embodiments of the present disclosure. It should be noted that those skilled in the art can further make some improvements and refinements without departing from the principles described in the present disclosure, and these improvements and refinements should also be regarded as being within the protection scope of the present disclosure.

Claims

1. A conditional handover method, A conditional handover method performed by terminals connected to a primary cell (PCell) and a primary secondary cell (PSCell), wherein the method is: If a target primary cell (PCell) that satisfies the first handover event exists, and the PSCell satisfies the second handover event, the procedure includes performing a conditional handover from the source PCell to the target PCell. The aforementioned method, Receiving first and second configuration information of a conditional handover transmitted from a network-side device, the first configuration information being for instructing the first handover event that the target PCell must satisfy when the PCell performs a conditional handover, and the second configuration information being for instructing the second handover event that the PSCell must satisfy, In accordance with the first configuration information, determine the target PCell that satisfies the first handover event, The process further includes determining whether PSCell satisfies the second handover event according to the second configuration information, A conditional handover method in which the first configuration information and the second configuration information are configured by a master node.

2. The first configuration information includes one or more candidate target PCells, and the first handover event and / or threshold value corresponding to the first handover event that triggers a conditional handover for each of the candidate target PCells. In accordance with the first configuration information, determining the target PCell that satisfies the first handover event is: According to the first configuration information, from among one or more candidate target PCells, Select the first candidate target PCell that satisfies the corresponding first handover event, The method according to claim 1, further comprising confirming the first candidate target PCell as the target PCell.

3. The first handover event includes the A3 event and / or the A5 event, and the second handover event is the A2 event, the A4 event, or the first event. The method according to claim 1, wherein the first event is a newly defined event.

4. An information transmission method performed by network-side equipment, wherein the method is: The first configuration information and the second configuration information for a conditional handover, which include sending to the terminal the first configuration information which is configuration information for instructing the target PCell to satisfy a first handover event that the PCell must satisfy when a PCell conditional handover is executed, and the second configuration information which is configuration information for instructing the PSCell to satisfy a second handover event. An information transmission method wherein the first configuration information and the second configuration information are configured by a master node.

5. The first configuration information includes one or more candidate target PCells and a first handover event and / or a threshold value corresponding to the first handover event that triggers a conditional handover for each of the candidate target PCells, and the second configuration information includes a second handover event and / or a threshold value corresponding to the second handover event that triggers a conditional handover for each PSCell. Or, The first handover event includes the A3 event and / or the A5 event, and the second handover event is the A2 event, the A4 event, or the first event. The aforementioned first event is a newly defined event, Or, The method according to claim 4, wherein the network-side equipment includes the master node and / or secondary node.

6. A method of transmitting information performed by a terminal, wherein the method is This includes transmitting primary information related to the success or failure of a conditional handover to network-side equipment. The aforementioned first information includes: A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, An information transmission method that includes at least one of the following: the time when a handover event that triggers a conditional handover, corresponding to PCell, is met, and a second time difference, which is the difference between the time when a handover event that triggers a conditional handover, corresponding to PSCell, is met.

7. The aforementioned method, The method according to claim 6, further comprising receiving first and second configuration information for a conditional handover transmitted from a network-side device, wherein the first configuration information is for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is performed, and the second configuration information is for instructing a second handover event that the PSCell must satisfy.

8. The method according to claim 7, wherein the first configuration information includes one or more candidate target PCells and a first handover event and / or a threshold value corresponding to the first handover event that triggers a conditional handover, and the second configuration information includes a second handover event and / or a threshold value corresponding to the second handover event that triggers a conditional handover, corresponding to a PSCell.

9. An information processing method performed by network-side equipment, wherein the method is: Receiving the initial information sent from the terminal, This includes adjusting the configuration information for a conditional handover configured for the terminal in accordance with the aforementioned first information, The aforementioned first information includes: A threshold value corresponding to the handover event that triggers a conditional handover, Network-side equipment that configures conditional handover for the terminal, The first time difference is the difference between the time the terminal receives the configuration information for the conditional handover and the time the handover event for the conditional handover is met. Related event information that satisfies the handover event that triggers a conditional handover, An information processing method that includes at least one of the following: the time when a handover event that triggers a conditional handover, corresponding to PCell, is met, and a second time difference, which is the difference between the time when a handover event that triggers a conditional handover, corresponding to PSCell, is met.

10. The aforementioned method, The method according to claim 9, further comprising transmitting first configuration information and second configuration information for a conditional handover to the terminal, wherein the first configuration information is for instructing a first handover event that the target PCell must satisfy when a PCell conditional handover is performed, and the second configuration information is for instructing a second handover event that the PSCell must satisfy.

11. The method according to claim 10, wherein the first configuration information includes one or more candidate target PCells and a first handover event and / or a threshold value corresponding to the first handover event that triggers a conditional handover, and the second configuration information includes a second handover event and / or a threshold value corresponding to the second handover event that triggers a conditional handover, corresponding to a PSCell.

12. A terminal comprising memory, a processor, and a program stored in the memory and operable on the processor, wherein when the processor executes the program, the conditional handover method described in any one of claims 1 to 3 or the information transmission method described in any one of claims 6 to 8 is realized.

13. A network-side device comprising memory, a processor, and a program stored in the memory and operable on the processor, wherein when the processor executes the program, the information transmission method described in claim 4 or 5 is realized, or the information processing method described in any one of claims 9 to 11 is realized.

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