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

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, the entire content of which is incorporated herein by reference. The present disclosure relates to the field of communication technologies, and in particular, to a conditional handover method, an information transmission method, a processing method, an apparatus, and a device.

Background Art

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

Summary of the Invention

Problems to be Solved by the Invention

[0003] The objective of the present disclosure is to provide a conditional handover method, an information transmission method, a processing method, an apparatus, and a device that can avoid the problem of degradation of 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, the present disclosure provides a conditional handover method executed by a terminal connected to a Primary Cell (PCell) and a Primary Secondary Cell (PSCell), comprising: When there exists a target Primary Cell (PCell) that satisfies a first handover event and the PSCell satisfies a second handover event, performing a conditional handover procedure from the source PCell to the target PCell.

[0005] Optionally, the method receives first configuration information and second configuration information of a conditional handover transmitted from a network-side device, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when performing a conditional handover of a PCell, and the second configuration information is configuration information for instructing a second handover event that a PSCell needs to satisfy, determines a target PCell that satisfies the first handover event according to the first configuration information, and further includes determining whether the PSCell satisfies the second handover event according to the second configuration information.

[0006] Optionally, the first configuration information includes one or more candidate target PCells, and the first handover event that triggers a conditional handover corresponding to each candidate target PCell and / or a threshold value corresponding to the first handover event. Determining a target PCell that satisfies the first handover event according to the first configuration information includes selecting, according to the first configuration information, a first candidate target PCell that satisfies the corresponding first handover event from one or more of the candidate target PCells, and determining the first candidate target PCell as the target PCell.

[0007] Optionally, the second configuration information includes the second handover event that triggers a conditional handover corresponding to the PSCell and / or a threshold value corresponding to the second handover event.

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

[0009] Optionally, 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 a second aspect, the present disclosure provides an information transmission method executed by a network-side device, including transmitting, to a terminal, first configuration information and second configuration information for conditional handover, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when performing conditional handover of a PCell, and the second configuration information is configuration information for instructing a second handover event that a PSCell needs to satisfy.

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

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

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

[0014] In a third aspect, the present disclosure provides an information transmission method executed by a terminal, further including transmitting first information related to success or failure of a conditional handover to a network-side device, wherein the first information includes a related identifier of a cell that triggers a conditional handover, a handover event that triggers a conditional handover, a threshold value corresponding to the handover event that triggers a conditional handover, a network-side device configured for a conditional handover for the terminal, a first time difference that is a difference between a time when configuration information of a conditional handover is received by the terminal and a time when the handover event of the conditional handover is satisfied, related event information when the handover event that triggers a conditional handover is satisfied, and further provides an information transmission method including at least one of a second time difference that is a difference between a time when the handover event that triggers a conditional handover corresponding to a PCell is satisfied and a time when the handover event that triggers a conditional handover corresponding to a PSCell is satisfied.

[0015] Optionally, the method further includes receiving first configuration information and second configuration information of a conditional handover transmitted from a network-side device, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when executing a conditional handover of a PCell, and the second configuration information is configuration information for instructing a second handover event that a PSCell needs to satisfy.

[0016] Optionally, the first configuration information includes one or more candidate target PCells, and a first handover event that triggers a 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 a second handover event that triggers a 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 provides an information processing method executed by a network-side device, receiving first information transmitted from a terminal; adjusting configuration information of a conditional handover configured for the terminal according to the first information, wherein the first information includes a related identifier of a cell that triggers a conditional handover; a handover event that triggers a conditional handover; a threshold value corresponding to the handover event that triggers a conditional handover; a network-side device that configures a conditional handover for the terminal; a first time difference that is a difference between a time when the configuration information of the conditional handover is received by the terminal and a time when the handover event of the conditional handover is satisfied; related event information when the handover event that triggers a 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 a time when the handover event that triggers a conditional handover corresponding to the PCell is satisfied and a time when the handover event that triggers a 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, 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.

[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 is 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, A first transmission module for transmitting to a terminal first configuration information and second configuration information for conditional handover, the first configuration information being configuration information for instructing a first handover event that a target PCell needs to satisfy when performing conditional handover of a PCell, and the second configuration information being configuration information for instructing a second handover event that a PSCell needs to satisfy, is further provided for an information transmission apparatus.

[0022] In a seventh aspect, the present disclosure is an information transmission apparatus executed by a terminal, including a second transmission module for transmitting first information related to success or failure of conditional handover to a network-side device, wherein 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 configured for the terminal for conditional handover, 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 transmission apparatus including at least one of a second time difference that is a difference between the time when the handover event that triggers conditional handover is satisfied corresponding to the PCell and the time when the handover event that triggers conditional handover is satisfied corresponding to the PSCell.

[0023] In an eighth aspect, the present disclosure is an information processing apparatus executed by a network-side device, including a third reception module for receiving the first information transmitted from the terminal, A third processing module for adjusting the configuration information of the conditional handover configured for the terminal according to the first information is included. The first information includes a related identifier of a cell that triggers a conditional handover, a handover event that triggers a conditional handover, a threshold value corresponding to the handover event that triggers a conditional handover, a network-side device that configures a conditional handover for the terminal, a first time difference that is a difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, related event information when the handover event that triggers a conditional handover is satisfied, An information processing apparatus is further provided, including at least one of a second time difference that is a difference between the time when the handover event that triggers a conditional handover is satisfied corresponding to the PCell and the time when the handover event that triggers a conditional handover is satisfied corresponding to the PSCell.

[0024] In a ninth aspect, the present disclosure provides a terminal including a processor and a transceiver that transmits and receives data under the control of the processor, and the processor is for performing an operation of executing a conditional handover procedure from a source PCell to a target PCell when there is a target primary cell (PCell) that satisfies a first handover event and the PSCell satisfies a second handover event.

[0025] In a tenth aspect, the present disclosure provides a network-side device including a processor and a transceiver that transmits and receives data under the control of the processor, and the processor To further provide a network-side device for executing a procedure of transmitting, via the transceiver, to a 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 executing conditional handover of a PCell, and second configuration information for instructing a second handover event that a PSCell needs to satisfy.

[0026] In an eleventh aspect, the present disclosure provides a terminal including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor is for executing a procedure of transmitting, via the transceiver, to a network-side device first information related to success or failure of conditional handover, wherein 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 configured for the terminal for conditional handover, a first time difference that is a difference between a time when the configuration information of conditional handover is received by the terminal and a 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 a terminal including at least one of a second time difference that is a difference between a time when the handover event that triggers conditional handover corresponding to the PCell is satisfied and a time when the handover event that triggers conditional handover corresponding to the PSCell is satisfied.

[0027] In a twelfth aspect, the present disclosure provides a network-side device including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor A procedure for receiving first information transmitted from a terminal via the transceiver; It is for executing a procedure for 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 the 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; Further provided is a network-side device including at least one of a second time difference that is the 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.

[0028] In a thirteenth aspect, the present disclosure further provides a terminal 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 conditional handover method described in the first aspect is realized, or the information transmission method described in the third aspect 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 is realized, or the information processing method described in the fourth aspect is realized.

[0030] In the fifteenth aspect, 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 aspect are realized, or the steps in the information transmission method described in the second aspect are realized, or the steps in the information transmission method described in the third aspect are realized, or the steps in the information processing method described in the fourth aspect are realized.

Advantages of the Invention

[0031] The above technical aspects of the present disclosure have at least the following beneficial effects. In the embodiments of the present disclosure, when a terminal connected to a source primary cell PCell and a primary secondary cell PSCell has a target primary cell (PCell) that satisfies a first handover event and the PSCell satisfies a second handover event, in order to execute a conditional handover procedure from the source PCell to the target PCell, the terminal needs to consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell in a dual-connection scenario. Only when both are satisfied can a primary cell conditional handover, that is, a conditional handover procedure from the source PCell to the target PCell, be executed. This avoids the problem of the degradation of the terminal's service experience due to conditional handover in the dual-connection scenario and improves the terminal's service experience.

Brief Description of the Drawings

[0032]

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Embodiments for Carrying Out the Invention

[0033] In order to make the problems, technical solutions and advantages to be solved by the present disclosure clearer, the following will be described in detail with reference to the drawings and specific embodiments.

[0034] In the related conditional handover mechanism, when the quality of the radio 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. The conditional handover command carries events for the UE to perform a handover spontaneously, such as A3 and / or A5 events. Furthermore, it is also possible for the conditional handover command to carry resources such as random access that the UE uses in the target cell.

[0035] When the UE discovers that the conditional handover event is satisfied, the UE autonomously initiates a random access procedure to the target base station or cell. In this way, when the channel between the UE and the serving cell suddenly deteriorates (especially during high-frequency deployment or high-speed movement of the terminal), it can be avoided that the UE cannot successfully receive the handover (HO) command sent from the serving base station, resulting in the UE being unable to complete the handover procedure normally. Therefore, the robustness of the handover procedure is improved.

[0036] In a dual-connection scenario, a secondary cell group (SCG) is usually used to provide a high-rate data service to a UE. In related technologies, when performing a conditional handover in a dual-connection scenario, the configuration of a handover trigger event (such as an A3 / A5 event) is performed only according to the measurement information of a PCell or a master cell group (MCG), without considering the situation of a PSCell or an SCG. Then, due to the conditional handover of the PCell being triggered when the quality of the PSCell is still relatively good, the high-rate data service of the UE may be interrupted, or after the handover to a new PCell, the current PSCell and the new PCell may be unable to perform dual connection (the current PSCell and the new PCell are not necessarily capable of dual connection), resulting in the possibility of affecting the service experience of the UE after the handover.

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

[0038] FIG. 1 is a flowchart of a conditional handover method according to an embodiment of the present disclosure. As shown in the figure, the method is executed by a terminal, where the terminal is connected to a source primary cell (PCell) and a primary secondary cell (PSCell) respectively, that is, the terminal is in a dual-connection scenario. Specifically, the method may include the following step 101.

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

[0040] It should be noted that the PCell mentioned in this disclosure may be understood as the MCG or the Master Node (MN), and the PSCell may be understood as the SCG or the Secondary Node (SN).

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

[0042] Performing the conditional handover procedure from the above-mentioned source PCell to the target PCell may be to apply the conditional configuration of the target PCell or PSCell.

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

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

[0045] The A5 event means that the signal quality of the serving cell is lower than a certain threshold and the signal quality of the adjacent cell is higher than a certain threshold. In this embodiment, the serving cell referred to in the A5 event is the PCell currently connected to the terminal.

[0046] The A2 event means that the signal quality of the serving cell is lower than a certain threshold. In this embodiment, the serving cell referred to in the A2 event is the PSCell currently connected to the terminal.

[0047] The A4 event means that the signal quality of an adjacent cell is higher than a certain threshold.

[0048] The first event refers to the fact that the first preset parameter of the terminal in the PSCell or SCG is lower than a certain threshold, where the first preset parameter includes, but is not limited to, data rate, throughput, and bandwidth. Or, the first event means that the second preset parameter of the data packet transmission of the terminal via the PSCell or SCG is higher than a certain threshold, where the second preset parameter includes, but is not limited to, delay, number of retransmissions (e.g., the number of retransmissions of the Radio Link Control (RLC) protocol), and packet loss rate.

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

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

[0051] If there is a target PCell that meets the first handover event but the PSCell does not meet the second handover event, it currently means that while the signal quality of the PCell serving the terminal is poor, the service quality of the PSCell serving the terminal is good, or no particularly good target or adjacent PSCell has been found. Since the PCell serving the terminal mainly conveys signaling and the transmission of signaling is not continuous and interruption-free, the impact of the poor signal quality of the PCell on the signaling transmission is not significant. As long as the service quality of the PSCell is good, the PSCell can continue to provide high-rate data services to the terminal. At this time, it is not necessary to execute the conditional handover procedure from the source PCell to the target PCell, so the handover of the UE can be reduced. As a result, the UE can use the high-speed data services provided by the PSCell or SCG as much as possible, and the purpose of improving the service experience of the UE is achieved.

[0052] As an alternative implementation manner, before step 101, the method according to the embodiments of the present disclosure may further include the following steps S11 to S13.

[0053] S11 is to receive the first configuration information and the second configuration information of the conditional handover transmitted from the network-side device, where the first configuration information is the configuration information for instructing the first handover event that the target PCell needs to meet when the conditional handover of the PCell is executed, and the second configuration information is the configuration information for instructing the second handover event that the PSCell needs to meet.

[0054] It should be noted that the terminal may receive one piece of information including the first configuration information and the second configuration information, or may receive two pieces of information, where the first configuration information is included in one piece of information and the second configuration information is included in the other piece of information.

[0055] Here, the network-side device configures the first configuration information and the second configuration information of the conditional handover for the terminal, so that the terminal determines a 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] Among them, 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. The second configuration information may also 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 a target PCell that satisfies the first handover event according to the first configuration information.

[0058] Optionally, the first configuration information includes one or more candidate target PCells, and a first handover event that triggers the conditional handover corresponding to each candidate target PCell 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 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 measurement results, and selects, according to the measurement results and the first configuration information, a first candidate target PCell that satisfies the corresponding first handover event from among the one or more candidate target PCells.

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

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

[0064] Since the first candidate target PCell satisfies the corresponding first handover event, the first candidate target PCell becomes the target PCell.

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

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

[0067] In step S121 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. Among them, the measurement results include the signal quality of the PCell serving the terminal, the parameter value representing the service quality of the PSCell serving the terminal, and the signal quality of one or more candidate target PCells.

[0068] Specifically, this step may include determining whether the PSCell serving the terminal meets the second handover event according to the parameter value representing the service quality of the PSCell and the second configuration information.

[0069] In one example, when the second handover event is an A2 event, correspondingly, if the signal quality of the PSCell is lower than the threshold value of the A2 event, it is determined that the PSCell meets the A2 event.

[0070] In another example, when the second handover event is an A4 event, correspondingly, if the signal quality of the adjacent or target PSCell is higher than the threshold value of the A4 event, it is determined that the adjacent or target PSCell meets the A4 event.

[0071] In another example, when the second handover event is an A3 event, correspondingly, if the signal quality of the adjacent or target PSCell is higher than the threshold value of the A3 event compared to the serving PSCell, it is determined that the adjacent or target PSCell meets the A3 event.

[0072] In another example, when the second handover event is an A5 event, correspondingly, 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, it is determined that the adjacent or target PSCell meets the A5 event.

[0073] Optionally, the target PSCell and the target PCell are capable of dual connection, that is, after the UE is handed over to the PCell and the PSCell, it is possible to perform dual connection.

[0074] Also, the conditional handover of the PSCell may be expressed as Conditional PSCell Change (CPC).

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

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

[0077] Optionally, 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. Among them, 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 independently configured by the MN, or may be jointly configured by the MN and the SN.

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

[0080] Here, the technical advantage of the configuration of the second configuration information by the SN is that, considering the load requirements of the SCG itself, it is possible to configure, for the UE, a threshold corresponding to the second handover event. For example, if the second handover event is an A2 event, when the load of the SCG is high, a high A2 event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a low A2 event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered. Also, for example, if the second handover event is a first event, and among them, the first event refers to the first preset parameter of the terminal in the PSCell or SCG being lower than a certain threshold, when the load of the SCG is high, a high first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a low first event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered. Further, for example, if the second handover event is a first event, and among them, the first event refers to the second preset parameter of the data packet transmission of the terminal via the PSCell or SCG being higher than a certain threshold, when the load of the SCG is high, a low first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a high first event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered.

[0081] As an alternative implementation, step S11 may specifically include the following step S111a.

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

[0083] In this implementation method, for the MN side, the first configuration information and the second configuration information may be independently configured by the MN and sent 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. After the configuration of the second configuration information is completed by the SN, the second configuration information is sent to the MN, and the first configuration information and the second configuration information may be sent from the MN to the terminal.

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

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

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

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

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

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

[0090] It should be noted that MN determines to configure the first configuration information and the second configuration information for conditional handover for the UE according to the measurement report sent by the UE. Alternatively, MN determines to configure the first configuration information for the UE according to the measurement report sent by the UE, and notifies the SN to configure the second configuration information for the UE, or without notification, the SN itself determines to configure the second configuration information for the UE.

[0091] According to the conditional handover method according to the embodiments of the present disclosure, for 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 the first handover event and the PSCell satisfies the second handover event, in order to execute the conditional handover procedure from the source PCell to the target PCell, in a dual-connection scenario, the terminal needs to consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell. Only when both are satisfied can the primary cell conditional handover, that is, the conditional handover procedure from the source PCell to the target PCell, be executed. Thereby, the problem of the degradation of the terminal's service experience due to conditional handover in the dual-connection scenario is avoided, and the terminal's service experience is improved.

[0092] FIG. 2 is a flowchart of an information transmission method according to an embodiment of the present disclosure. As shown in the figure, the method is executed by a network-side device. Specifically, the method may include the following step 201.

[0093] Step 201 is to transmit to the terminal the first configuration information and the second configuration information for conditional handover, where the first configuration information is the configuration information for instructing the first handover event that the target PCell needs to satisfy when the conditional handover of the PCell is executed, and the second configuration information is the configuration information for instructing the second handover event that the PSCell needs to satisfy.

[0094] It should be noted 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, where the first configuration information is included in one piece of information and the second configuration information is included in the other piece of information, to the terminal.

[0095] Among them, the target PCell is a PCell adjacent to the PCell serving the terminal. The PSCell is the primary secondary cell serving the terminal.

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

[0097] According to the information transmission method according to the embodiments of the present disclosure, the first configuration information and the second configuration information of the conditional handover are transmitted by the network-side device to the terminal, that is, the first configuration information and the second configuration information of the conditional handover are configured by the network-side device for the terminal. The purpose is to enable the terminal to determine a 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. In this way, in a dual-connection scenario, the terminal needs to consider not only the trigger event of the primary cell but also the trigger event of the primary secondary cell. Only when both are satisfied can the primary cell conditional handover be executed, thereby avoiding the problem of the degradation of the terminal's service experience due to the conditional handover in the dual-connection scenario and improving the terminal's service experience.

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

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

[0100] Optionally, the network-side device includes a master node and / or a secondary node.

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

[0102] S21 is to receive a measurement report transmitted 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 independently configured by the MN or jointly configured by the MN and the SN.

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

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

[0107] Step S222a is that after receiving the notification message, SN configures the second configuration information for the terminal.

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

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

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

[0111] Step S222b is that SN configures the second configuration information for the terminal.

[0112] The above two implementation manners respectively correspond to the case where MN determines to configure the first configuration information for the UE according to the measurement report sent by the UE and notifies SN to configure the second configuration information for the UE, or the case where SN itself determines to configure the second configuration information for the UE without the need for notification.

[0113] FIG. 3 is a flow schematic diagram of an information transmission method according to an embodiment of the present disclosure. As shown in the figure, the method is executed by a terminal, and specifically, the method may include the following step 301.

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

[0115] Among them, the first information includes at least one of the following (1) to (7). (1) It is an identifier related to a cell that triggers conditional handover. (2) It is a handover event that triggers conditional handover. Here, the handover event refers to a first handover event (such as an A3 event and / or an A5 event) corresponding to a PCell and a second handover event (such as an A2 event or an A4 event or a first event) corresponding to a PSCell, which are configured by a network-side device for a terminal. (3) It is a threshold value corresponding to a handover event that triggers conditional handover. (4) It is a network-side device that configures conditional handover for a terminal. (5) It is a first time difference, which is the 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. 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 satisfied, or 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 satisfied. If the time when the first configuration information is received by the terminal is the same as the time when the second configuration information is received by the terminal, the first time difference may be the difference between the time when the first configuration information and the second configuration information are received by the terminal and the time when both of the two handover events (the first handover event and the second handover event) are satisfied (or the time when the handover event that is satisfied later is satisfied). If the time when the first configuration information is received by the terminal is different from the time when the second configuration information is received by the terminal, the first time difference may be the difference between the reception time of the configuration information received first (the first configuration information or the second configuration information) and the time when both handover events are satisfied (or the time when the later-satisfied handover event is satisfied), or may be the difference between the reception time of the configuration information received later (the first configuration information or the second configuration information) and the time when both handover events are satisfied (or the time when the later-satisfied handover event is satisfied). Here, the satisfaction of an event may also be expressed as the triggering of a conditional handover by the UE or the application of the configuration of the conditional handover by the UE. For example, if the first time difference is very large, it means that a handover occurs after a considerable amount of time has passed after the UE receives the configuration, indicating that the configuration is too early and the target cell on the network side reserves resources for the UE for too long, resulting in a waste of resources. Therefore, the network side needs to readjust the configuration timing of the conditional handover (for example, delay the configuration) or related parameters to reduce the first time difference. (6) It is the related event information when the handover event that triggers the conditional handover is satisfied. (7) It is the second time difference, which is the difference between the time when the handover event that triggers the conditional handover corresponding to the PCell is satisfied and the time when the handover event that triggers the conditional handover corresponding to the PSCell is satisfied. For example, if the second time difference is very large, it will take a considerable amount of time after the PCell meets the handover condition for the PSCell to meet it, which means that there may be a radio link failure (RLF) on the source PCell for the UE, or conversely, it will take a considerable amount of time after the PSCell meets the handover condition for the PCell to meet it, which means that the quality of the dual connection on the source PCell and the PSCell is not good for the UE. The network side needs to readjust the configuration parameters of the conditional handover so that the second time difference is as small as possible, and most preferably, the handover events of the PCell and the PSCell are satisfied simultaneously.

[0116] Here, if the network-side device receives the first information related to the success or failure of the conditional handover, based on the first information, it determines whether the configured timing and configuration parameters corresponding to the configuration information of the conditional handover previously configured for the terminal are appropriate. If not, it readjusts the configuration information of the conditional handover. In this way, the terminal determines the target PCell that meets the first handover event according to the adjusted configuration information of the conditional handover, and determines whether the PSCell meets the second handover condition. Ultimately, the problem of the degradation of the terminal's service experience due to the conditional handover of the terminal in the dual-connection scenario is avoided, and the purpose of improving the terminal's service experience is achieved.

[0117] In one alternative implementation manner, before step 301, the method according to the embodiments of the present disclosure may further include the following step 300.

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

[0119] Since what is adjusted by the network-side device is the configuration information of the conditional handover issued by the network-side device before that, in one alternative implementation manner, before step 301, the method according to the embodiments of the present disclosure may further include step S31.

[0120] S31 is to receive first configuration information and second configuration information of conditional handover transmitted from a network-side device, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when executing conditional handover of a PCell, and the second configuration information is configuration information for instructing a second handover event that a PSCell needs to satisfy.

[0121] Among them, the first configuration information may include a specific handover event for triggering the configured conditional handover and a threshold value corresponding to the handover event, and the second configuration information may include a specific handover event for triggering the configured conditional handover and a threshold value corresponding to the handover event.

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

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

[0124] Here, the network-side device configures the first configuration information and the second configuration information for conditional handover for the terminal, so that the terminal determines a 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] Optionally, the first configuration information and the second configuration information may be independently configured by the MN, or may be jointly configured by the MN and the SN.

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

[0127] Here, the technical advantage of the configuration of the second configuration information by the SN lies in that, considering the load needs of the SCG itself, the threshold corresponding to the second handover event can be configured for the UE. For example, if the second handover event is an A2 event, when the load of the SCG is high, a high A2 event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a low A2 event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered. Also, for example, if the second handover event is a first event, and among them, the first event refers to that the first preset parameter of the terminal in the PSCell or SCG is lower than a certain threshold, when the load of the SCG is high, a high first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a low first event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered. Further, for example, if the second handover event is a first event, and among them, the first event refers to that the second preset parameter of the data packet transmission of the terminal via the PSCell or SCG is higher than a certain threshold, when the load of the SCG is high, a low first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a high first event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered.

[0128] As an alternative implementation, step S31 may specifically include the following step S311a.

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

[0130] In this implementation manner, regarding 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. After the configuration of the second configuration information is completed by the SN, the second configuration information is 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 alternative implementation manner, 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 the SN.

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

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

[0136] S30 is to transmit a measurement report for triggering the network-side device to configure the configuration information of the conditional handover for the terminal to the master node.

[0137] It should be noted that MN determines to configure the first configuration information and the second configuration information of the conditional handover for the UE according to the measurement report transmitted from the UE. Or, MN determines to configure the first configuration information for the UE according to the measurement report transmitted from the UE, and notifies the SN to configure the second configuration information for the UE, or without notification, the SN itself determines to configure the second configuration information for the UE.

[0138] When the first information related to the 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 device are not appropriate and need to be adjusted. When the first information related to the success of the conditional handover is recorded by the terminal, according to the first information, it is possible to determine whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If not, adjustment is required, and the network-side device adjusts the conditional handover configuration information according to the first information reported by the terminal.

[0139] Optionally, the threshold value corresponding to the handover event that triggers the conditional handover includes 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 device that configures the conditional handover configuration information for the terminal includes MN and / or SN. Here, the purpose of recording the network-side device that configures the conditional handover for the terminal by the terminal is to instruct the terminal which network-side device (for example, MN or SN) to send the first information to.

[0141] The first time difference is the difference between the time when the first configuration information is received by the terminal and the time when the first handover event is satisfied. 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 configuration timing of the first configuration information by the network-side device is too early. The network-side device needs to delay the configuration timing of the first configuration information.

[0142] The first time difference is the difference between the time when the first configuration information is received by the terminal and the time when the first handover event is satisfied. If the first time difference is less than the first preset threshold, it means that the first time difference is too short and the configuration timing of the first configuration information by the network-side device is too late. The network-side device needs to advance the configuration timing of the first configuration information.

[0143] The first time difference is the difference between the time when the second configuration information is received by the terminal and the time when the second handover event is satisfied. 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 configuration timing of the second configuration information by the network-side device is too early. The network-side device needs to delay the configuration timing of the second configuration information.

[0144] The first time difference is the difference between the time when the second configuration information is received by the terminal and the time when the second handover event is satisfied. If the first time difference is less than the second preset threshold, it means that the first time difference is too short and the configuration timing of the second configuration information by the network-side device is too late. The network-side device needs to advance the configuration timing of the second configuration information.

[0145] Here, regarding the related event information that satisfies the handover event that triggers the conditional handover, the related event information includes the specific handover event that is satisfied (for example, whether it is the first handover event, or the second handover event, or both are satisfied), the order of the time when it is satisfied (for example, whether the first handover event or the event for the PCell is satisfied first or last, or whether the second handover event or the event for the PSCell is satisfied first or last), information on whether the satisfied handover event is for the PCell, for the PSCell, or both are satisfied, and the time difference between when the first handover event (or the event for the PCell) and the second handover event (or the event for the PSCell) are satisfied, and may be one or more of them.

[0146] In one example, if the first handover event is triggered, but the second handover event is not triggered, and the UE records the first information, or 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 equal to or greater than the third preset threshold, it means that it is necessary to adjust the hurdle for triggering the configured second handover event. For example, when the second handover event is an A2 event, the hurdle for triggering the A2 event needs to be adjusted lower. Specifically, it is necessary to increase the threshold value of the A2 event so that the UE can trigger the conditional handover earlier. 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 lower than a certain threshold, the hurdle for triggering the first event needs to be adjusted lower. Specifically, it is necessary to increase the threshold value of the first event so that the UE can trigger the conditional handover earlier. If the second handover event is a first event, and the first event refers to the second preset parameter of the data packet transmission of the terminal via the PSCell or SCG being higher than a certain threshold, the hurdle for triggering the first event needs to be adjusted higher. Specifically, it is necessary to lower the threshold value of the first event so that the UE can trigger the conditional handover earlier. If the second handover event is triggered, but the first handover event has not been triggered, and the UE records the first information, or 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, it means that it is necessary to adjust the hurdle for triggering the configured second handover event. For example, when the second handover event is an A2 event, the hurdle for triggering the A2 event needs to be adjusted higher. Specifically, it is necessary to lower the threshold value of the A2 event so that the UE can trigger the conditional handover later. If the second handover event is a first event, and the first event refers to that the first preset parameter of the terminal in the PSCell or SCG is lower than a certain threshold, the hurdle for triggering the first event needs to be adjusted higher. Specifically, it is necessary to lower the threshold value of the first event so that the UE can trigger the conditional handover later. If the second handover event is a first event, and the first event refers to that the second preset parameter of the data packet transmission of the terminal via the PSCell or SCG is higher than a certain threshold, the hurdle for triggering the first event needs to be adjusted lower. Specifically, it is necessary to raise the threshold value of the first event so that the UE can trigger the conditional handover later.

[0147] FIG. 4 is a flowchart of an information processing method according to an embodiment of the present disclosure. As shown in the figure, the method is executed by a network-side device, and specifically, the method may include the following steps 401 to 402.

[0148] Step 401 is to receive the first information transmitted from the terminal.

[0149] Optionally, the first information is information related to the success or failure of the conditional handover of the terminal recorded by the terminal.

[0150] Step 402 is to adjust the configuration information of the conditional handover configured for the terminal according to the first information. Among them, the first information includes the related identifier of the cell that triggers the conditional handover, the handover event that triggers the conditional handover, the threshold value corresponding to the handover event that triggers the conditional handover, the network-side device that configures the conditional handover for the terminal, the first time difference, which is the difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, the related event information when the handover event that triggers the conditional handover is satisfied, at least one of the second time difference, which is the difference between the time when the handover event that triggers the conditional handover corresponding to the PCell is satisfied and the time when the handover event that triggers the conditional handover corresponding to the PSCell is satisfied.

[0151] Here, after receiving the first information, the network-side device determines whether the configuration timing and configuration parameters corresponding to the configuration information of the conditional handover configured for the terminal before are appropriate based on the first information. If not, it readjusts the configuration information of the conditional handover. In this way, the terminal determines the target PCell that satisfies the first handover event according to the adjusted configuration information of the conditional handover, and determines whether the PSCell satisfies the second handover condition. Finally, the problem of the degradation of the terminal's service experience due to the conditional handover of the terminal in the dual-connection scenario is avoided, and the purpose of improving the terminal's service experience is achieved.

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

[0153] S41 is to send to the terminal first configuration information and second configuration information of the conditional handover, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to meet when performing the conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that a PSCell needs to meet.

[0154] It should be noted that the network-side device may send to the terminal one piece of information including the first configuration information and the second configuration information, or the network-side device may send to the terminal two pieces of information, where the first configuration information is included in one piece of information and the second configuration information is included in the other piece of information.

[0155] Among them, the first configuration information may include a specific handover event for triggering the configured conditional handover and a threshold value corresponding to the handover event, and the second configuration information may include a specific handover event for triggering the configured conditional handover and a threshold value corresponding to the handover event.

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

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

[0158] Here, the network-side device configures the first configuration information and the second configuration information of the conditional handover for the terminal, and the purpose is to enable the terminal to determine a 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] Optionally, the first configuration information and the second configuration information may be independently configured by the MN, or may be independently configured by the SN, or may be jointly configured by the MN and the SN.

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

[0161] Here, the technical advantage of the configuration of the second configuration information by the SN lies in that, considering the load needs of the SCG itself, the threshold corresponding to the second handover event can be configured for the UE. For example, if the second handover event is an A2 event, when the load of the SCG is high, a high A2 event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a low A2 event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered. Also, for example, if the second handover event is a first event, and among them, the first event refers to that the first preset parameter of the terminal in the PSCell or SCG is lower than a certain threshold, when the load of the SCG is high, a high first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a low first event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered. Further, for example, if the second handover event is a first event, and among them, the first event refers to that the second preset parameter of the data packet transmission of the terminal via the PSCell or SCG is higher than a certain threshold, when the load of the SCG is high, a low first event threshold can be configured for the UE so that the UE can easily trigger a conditional handover. Conversely, a high first event threshold can be configured so that the UE can remain in the current serving cell as long as possible and the conditional handover is not triggered.

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

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

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

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

[0166] Furthermore, when the configuration information is configured by the master node and the secondary node, in one alternative implementation, step S52 may specifically include the following steps S521a to S522a.

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

[0168] Step S522a is that after receiving the notification message, the SN configures the second configuration information for the terminal.

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

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

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

[0172] Step S522b is that the SN configures the second configuration information for the terminal.

[0173] The above two implementation methods respectively correspond to the case where the MN determines to configure the first configuration information for the UE according to the measurement report transmitted from the UE and notifies the SN to configure the second configuration information for the UE, or the case where the SN itself determines to configure the second configuration information for the UE without the need for notification.

[0174] As an alternative implementation, step S41 may specifically include the following step S411a.

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

[0176] In this implementation, for the MN side, the first configuration information and the second configuration information may be independently configured by the MN and sent 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. After the configuration of the second configuration information is completed by the SN, the second configuration information is sent to the MN, and the first configuration information and the second configuration information are sent from the MN to the terminal.

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

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

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

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

[0181] It should be noted that the MN determines to configure the conditional handover configuration information for the UE according to the measurement report sent from the UE. Or, the MN determines to configure the first configuration information for the UE according to the measurement report sent from the UE, and notifies the SN to configure the second configuration information for the UE or does not require notification, and the SN itself determines to configure the second configuration information for the UE.

[0182] When the terminal records the first information related to the conditional handover failure, it means that the configuration timing and configuration parameters of the conditional handover configuration information previously configured for the terminal by the network-side device are not appropriate and need to be adjusted. When the terminal records the first information related to the success of the conditional handover, according to the first information, it is possible to determine whether the configuration timing and configuration parameters corresponding to the conditional handover configuration information previously configured for the terminal are appropriate. If not, adjustment is required, and the network-side device adjusts the conditional handover configuration information according to the first information reported by the terminal.

[0183] In one alternative implementation, step 402 is The first time difference is the difference between the time when the first configuration information is received by the terminal and the time when the first handover event is satisfied. If the first time difference is greater than or equal to the first preset threshold, delay the configuration timing of the first configuration information, The first time difference is the difference between the time when the first configuration information is received by the terminal and the time when the first handover event is satisfied. If the first time difference is less than the first preset threshold, advance the configuration timing of the first configuration information, The first time difference is the difference between the time when the second configuration information is received by the terminal and the time when the second handover event is satisfied. If the first time difference is greater than or equal to the second preset threshold, delay the configuration timing of the second configuration information, The first time difference is the difference between the time when the second configuration information is received by the terminal and the time when the second handover event is satisfied. If the first time difference is less than the second preset threshold, it may include advancing the configuration timing of the second configuration information.

[0184] In another alternative implementation, the second handover event is an A2 event. Accordingly, step 402 is If, according to the related event information that satisfies the handover event that triggers the conditional handover, the first handover event is triggered, but it is determined that the second handover event is not triggered, 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 a third preset threshold, increase the threshold value corresponding to the A2 event, and It may also include, if, according to the related event information that satisfies the handover event that triggers the conditional handover, the second handover event is triggered, but it is determined that 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 a third preset threshold, decreasing the threshold value corresponding to the A2 event.

[0185] In another alternative implementation, the second handover event is the first event, and the first event refers to that the first preset parameter of the terminal in the PSCell or SCG is lower than a certain threshold. Accordingly, step 402 is If, according to the related event information that satisfies the handover event that triggers the conditional handover, the first handover event is triggered, but it is determined that the second handover event is not triggered, 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 a third preset threshold, increase the threshold value corresponding to the first event, and It may also include, if, according to the related event information that satisfies the handover event that triggers the conditional handover, the second handover event is triggered, but it is determined that 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 a third preset threshold, decreasing the threshold value corresponding to the first event.

[0186] In yet another alternative implementation, the second handover event is the first event, and the first event refers to that the second preset parameter of the data packet transmission of the terminal via the PSCell or SCG is higher than a certain threshold. Accordingly, step 402 is If, according to the related event information that the handover event triggering the conditional handover is satisfied, it is determined that the first handover event is triggered but the second handover event is not triggered, 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 reducing the threshold value of the first event, and If, according to the related event information that the handover event triggering the conditional handover is satisfied, it is determined that the 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, it may further include increasing the threshold value of the first event.

[0187] To more preferably achieve the above object, as shown in FIG. 5, an embodiment of the present disclosure further provides a conditional handover apparatus executed by a terminal connected to a source primary cell PCell and a primary secondary cell PSCell. The apparatus includes a handover module 501 for executing a conditional handover procedure from the source PCell to the target PCell when there is a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event.

[0188] Optionally, the apparatus according to the embodiment of the present disclosure A first reception module for receiving first configuration information and second configuration information of a conditional handover transmitted from a network-side device, the first configuration information being configuration information for instructing a first handover event that a target PCell needs to satisfy when performing a conditional handover of a PCell, and the second configuration information being configuration information for instructing a second handover event that a PSCell needs to satisfy. A first processing module for determining a target PCell that satisfies a first handover event according to the first configuration information. It further includes a second processing module for determining whether a PSCell satisfies a second handover event according to the second configuration information.

[0189] Optionally, the first configuration information includes one or more candidate target PCells, and a first handover event that triggers a conditional handover corresponding to each candidate target PCell 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 a corresponding first handover event from one or more candidate target PCells according to the first configuration information, and A second processing unit for determining the first candidate target PCell as the target PCell.

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

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

[0192] Optionally, 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.

[0193] According to the conditional handover device according to an embodiment of the present disclosure, when there is a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event, in order to execute the conditional handover procedure from the source PCell to the target PCell, in a dual-connection scenario, the terminal needs to consider not only the trigger event of the primary cell but also the trigger event of the primary-secondary cell. Only when both are satisfied can the primary cell conditional handover, that is, the conditional handover procedure from the source PCell to the target PCell, be executed. As a result, the problem of the degradation of the terminal's service experience due to conditional handover in the dual-connection scenario is avoided, and the terminal's service experience is improved.

[0194] As shown in FIG. 6, the embodiment of the present disclosure further provides an information transmission device executed by a network-side device, and the device includes a first transmission module 601 for transmitting to the terminal the first configuration information and the second configuration information of the conditional handover, where the first configuration information is configuration information for instructing a first handover event that the target PCell needs to satisfy when executing the conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that the PSCell needs to satisfy.

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

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

[0197] Optionally, the network-side device includes a master node and / or a secondary node.

[0198] According to the information transmission device according to the embodiment of the present disclosure, the first configuration information and the second configuration information of the conditional handover are transmitted to the terminal, that is, the first configuration information and the second configuration information of the conditional handover are configured by the network-side device for the terminal, and the purpose is to enable the terminal to determine a 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. In this way, in the dual-connection scenario, the terminal needs to 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 executed, thereby avoiding the problem of the degradation of the terminal's service experience due to the conditional handover in the dual-connection scenario and improving the terminal's service experience.

[0199] As shown in FIG. 7, the embodiment of the present disclosure further provides an information transmission device executed by a terminal, and the device includes Including a second transmission module 701 for transmitting first information related to the success or failure of conditional handover to a network-side device, Among them, the first information includes The related identifier of the cell that triggers the conditional handover, The handover event that triggers the conditional handover, The threshold value corresponding to the handover event that triggers the conditional handover, The network-side device configured for the terminal for conditional handover, The first time difference, which is the difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, The related event information when the handover event that triggers the conditional handover is satisfied, At least one of the second time difference, which is the difference between the time when the handover event that triggers the conditional handover is satisfied corresponding to the PCell and the time when the handover event that triggers the conditional handover is satisfied corresponding to the PSCell, is included.

[0200] Optionally, the apparatus according to the embodiments of the present disclosure further includes A second receiving module for receiving first configuration information and second configuration information of conditional handover transmitted from a network-side device, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when performing conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that the PSCell needs to satisfy.

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

[0202] According to the information transmission device according to the embodiment of the present disclosure, by transmitting the first information related to the success or failure of the conditional handover to the network-side device, after receiving the first information, the network-side device determines whether the configuration timing and configuration parameters corresponding to the configuration information of the conditional handover configured for the terminal before are appropriate based on the first information. If not, the configuration information of the conditional handover is readjusted. In this way, the terminal determines a target PCell that satisfies the first handover event and determines whether the PSCell satisfies the second handover condition according to the adjusted configuration information of the conditional handover. Finally, the problem of the degradation of the terminal's service experience due to the conditional handover of the terminal in the dual-connection scenario is avoided, and the purpose of improving the terminal's service experience is achieved.

[0203] As shown in FIG. 8, the embodiment of the present disclosure further provides an information processing device executed by a network-side device, and the device includes a third receiving module 801 for receiving the first information transmitted from the terminal, and a third processing module 802 for adjusting the configuration information of the conditional handover configured for the terminal according to the first information. Among them, the first information includes a related identifier of a cell that triggers a conditional handover, a handover event that triggers a conditional handover, A threshold value corresponding to a handover event that triggers a conditional handover, and A network-side device that configures a conditional handover for a terminal, and A first time difference that is the difference between the time when configuration information of a conditional handover is received by a terminal and the time when a handover event of the conditional handover is satisfied, and Related event information when a handover event that triggers a conditional handover is satisfied, and At least one of a second time difference that is the difference between the time when a handover event that triggers a conditional handover corresponding to a PCell is satisfied and the time when a handover event that triggers a conditional handover corresponding to a PSCell is satisfied is included.

[0204] Optionally, the apparatus according to an embodiment of the present disclosure Further includes a third transmission module for transmitting to a terminal first configuration information and second configuration information of a conditional handover, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when executing a conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that a PSCell needs to satisfy.

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

[0206] According to the information processing apparatus according to an embodiment of the present disclosure, first information transmitted from a terminal is received. After receiving the first information, based on the first information, it is determined whether the configuration timing and configuration parameters corresponding to the configuration information of the conditional handover configured for the terminal before are appropriate. If not appropriate, the configuration information of the conditional handover is readjusted. In this way, the terminal determines a target PCell that satisfies the first handover event according to the adjusted configuration information of the conditional handover, and determines whether the PSCell satisfies the second handover condition. Finally, the problem of the degradation of the service experience of the terminal due to the conditional handover of the terminal in the dual connection scenario is avoided, and the purpose of improving the service experience of the terminal is achieved.

[0207] As shown in FIG. 9, an embodiment of the present disclosure further provides a terminal connected to a source primary cell PCell and a primary secondary cell PSCell, including a processor 900 and a transceiver 910. The terminal further includes a user interface 920, and the processor 900 is for executing procedures such as executing a conditional handover procedure from the source PCell to the target PCell when there is a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event.

[0208] Optionally, the transceiver 910 is also for receiving first configuration information and second configuration information of a conditional handover transmitted from a network-side device, where the first configuration information is configuration information for instructing a first handover event that the target PCell needs to satisfy when performing the conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that the PSCell needs to satisfy. Accordingly, the processor 900 determines a target PCell that satisfies the first handover event according to the first configuration information It is also used to determine whether the PSCell satisfies a second handover event according to the second configuration information.

[0209] Optionally, the first configuration information includes one or more candidate target PSCs, a first handover event that triggers a conditional handover corresponding to each candidate target PSC, and / or a threshold value corresponding to the first handover event. Accordingly, the processor 900 selects a first candidate target PSC that satisfies the corresponding first handover event from among the one or more candidate target PSCs according to the first configuration information, and is also used to determine the first candidate target PSC as the target PSC.

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

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

[0212] Optionally, 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.

[0213] According to the terminal of the embodiment of the present disclosure, when there is a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event, in order to execute the conditional handover procedure from the source PCell to the target PCell, in a dual-connection scenario, the terminal needs to consider not only the trigger event of the primary cell but also the trigger event of the primary-secondary cell. Only when both are satisfied can the primary cell conditional handover, that is, the conditional handover procedure from the source PCell to the target PCell, be executed. Thereby, the problem of the degradation of the terminal's service experience due to conditional handover in the dual-connection scenario is avoided, and the terminal's service experience is improved.

[0214] As shown in FIG. 10, the embodiment of the present disclosure further provides a network-side device including a processor 1000 and a transceiver 1010. The processor 1000 is for executing a procedure of transmitting, via the transceiver 1010, first configuration information and second configuration information of conditional handover, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when executing the conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that the PSCell needs to satisfy.

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

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

[0217] Optionally, the network-side device includes a master node and / or a secondary node.

[0218] According to the network-side device according to the embodiments of the present disclosure, the first configuration information and the second configuration information of the conditional handover are transmitted to the terminal, that is, the network-side device configures the first configuration information and the second configuration information of the conditional handover for the terminal, and the purpose is that the terminal determines a 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. In this way, in the dual-connection scenario, the terminal needs to consider not only the trigger event of the primary cell but also the trigger event of the primary-secondary cell. Only when both are satisfied can the primary cell conditional handover be executed, thereby avoiding the problem of the degradation of the terminal's service experience due to the conditional handover in the dual-connection scenario and improving the terminal's service experience.

[0219] As shown in FIG. 11, the embodiments of the present disclosure further provide a terminal including a processor 1100 and a transceiver 1110, and the terminal further includes a user interface 1120. The processor 1100 is for executing a procedure of transmitting first information related to the success or failure of the conditional handover to the network-side device via the transceiver 1110, wherein the first information includes a related identifier of the cell that triggers the conditional handover, a handover event that triggers the conditional handover, a threshold value corresponding to the handover event that triggers the conditional handover, A network device configured for conditional handover for a terminal, A first time difference that is a difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, Relevant event information in which a handover event that triggers a conditional handover is satisfied, At least one of: a second time difference that is a difference between the time when a handover event that triggers a conditional handover corresponding to a PCell is satisfied and the time when a handover event that triggers a conditional handover corresponding to a PSCell is satisfied.

[0220] Optionally, the transceiver 1110 Is also for receiving first configuration information and second configuration information of a conditional handover transmitted from a network device, the first configuration information being configuration information for instructing a first handover event that a target PCell needs to satisfy when performing a conditional handover of the PCell, and the second configuration information being configuration information for instructing a second handover event that a PSCell needs to satisfy.

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

[0222] According to the terminal according to an embodiment of the present disclosure, by transmitting first information related to the success or failure of a recorded conditional handover to a network-side device, after receiving the first information, the network-side device determines, based on the first information, whether the configuration timing and configuration parameters corresponding to the configuration information of the conditional handover configured for the terminal before are appropriate. If not appropriate, the network-side device will readjust the configuration information of the conditional handover. In this way, the terminal determines a target PCell that satisfies a first handover event according to the adjusted configuration information of the conditional handover, and determines whether the PSCell satisfies a second handover condition. Finally, the problem of the degradation of the service experience of the terminal due to the conditional handover of the terminal in a dual-connection scenario is avoided, and the purpose of improving the service experience of the terminal is achieved.

[0223] As shown in FIG. 12, an embodiment of the present disclosure further provides a network-side device including a processor 1200 and a transceiver 1210. The processor 1200 receives the first information transmitted from the terminal via the transceiver 1210, and executes a procedure for adjusting the configuration information of the conditional handover configured for the terminal according to the first information. Among them, the first information includes a related identifier of a cell that triggers the conditional handover, a handover event that triggers the conditional handover, a threshold value corresponding to the handover event that triggers the conditional handover, a network-side device that configures the conditional handover for the terminal, a first time difference that is the difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, related event information when the handover event that triggers the conditional handover is satisfied, At least one of the time when the handover event that triggers the conditional handover corresponding to the PCell is satisfied and the second time difference that is the difference between the time when the handover event that triggers the conditional handover corresponding to the PSCell is satisfied is included.

[0224] Optionally, the transceiver 1210 It is also for transmitting to the terminal the first configuration information and the second configuration information of the conditional handover, which are the first configuration information for instructing the first handover event that the target PCell needs to satisfy when executing the conditional handover of the PCell, and the second configuration information for instructing the second handover event that the PSCell needs to satisfy.

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

[0226] According to the network-side device according to the embodiment of the present disclosure, it receives the first information transmitted from the terminal, and after receiving the first information, based on the first information, it determines whether the configuration timing and the configuration parameters corresponding to the configuration information of the conditional handover configured for the terminal before are appropriate. If not appropriate, it re-adjusts the configuration information of the conditional handover. In this way, the terminal determines the target PCell that satisfies the first handover event and determines whether the PSCell satisfies the second handover condition according to the adjusted configuration information of the conditional handover. Finally, the problem of the degradation of the terminal's service experience due to the conditional handover of the terminal in the dual-connection scenario is avoided, and the purpose of improving the terminal's service experience is achieved.

[0227] Embodiments of the present disclosure further provide a terminal including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the program, each procedure in the embodiment of the above conditional handover method is realized, or each procedure in the embodiment of the above information transmission method is realized and the same technical effect can be achieved. To avoid duplication, it will not be repeated here.

[0228] Embodiments of the present disclosure further provide a network-side device including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the program, each procedure in the embodiment of the above information transmission method is realized, or each procedure in the embodiment of the above information processing method is realized and the same technical effect can be achieved. To avoid duplication, it will not be repeated here.

[0229] Embodiments of the present disclosure further provide a computer-readable storage medium storing a computer program. When the program is executed by a processor, each procedure in the embodiment of the above conditional handover method is realized, or each procedure in the embodiment of the above information transmission method is realized, or each procedure in the embodiment of the above information processing method is realized and the same technical effect can be achieved. To avoid duplication, it will not be repeated here. Among them, the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an 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 an entirely hardware embodiment, an entirely 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 embodiments of the present disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be realized by computer program instructions. These computer program instructions are provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processing device, or other programmable data processing device to form a 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 in 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 by the instructions stored in the computer-readable storage medium, a product including an instruction device is formed. The instruction device realizes the functions specified in 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 to thereby form a process that is 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 on the premise of not 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 executed by a terminal connected to a primary cell (PCell) and a primary-secondary cell (PSCell), the method comprising: When there is a target primary cell (PCell) that satisfies a first handover event and the PSCell satisfies a second handover event, performing a conditional handover procedure from the source PCell to the target PCell. A conditional handover method.

2. The method further comprises: Receiving first configuration information and second configuration information for conditional handover transmitted from a network-side device, the first configuration information being configuration information for instructing the first handover event that the target PCell needs to satisfy when performing conditional handover of the PCell, and the second configuration information being configuration information for instructing the second handover event that the PSCell needs to satisfy; Determining a target PCell that satisfies the first handover event according to the first configuration information; Determining whether the PSCell satisfies the second handover event according to the second configuration information. The method according to claim 1.

3. The first configuration information includes one or more candidate target PCells, and the first handover event that triggers conditional handover and / or the threshold value corresponding to the first handover event corresponding to each candidate target PCell; Determining a target PCell that satisfies the first handover event according to the first configuration information includes: Selecting a first candidate target PCell that satisfies the corresponding first handover event from one or more candidate target PCells according to the first configuration information; Determining the first candidate target PCell as the target PCell. The method according to claim 2.

4. The second configuration information includes the second handover event that triggers conditional handover corresponding to the PSCell and / or the threshold value corresponding to the second handover event. The method according to claim 2.

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

6. The method according to claim 2, wherein the first configuration information and the second configuration information are configured by a master node, or the first configuration information is configured by the master node and the second configuration information is configured by a secondary node.

7. An information transmission method executed by a network-side device, the method comprising: transmitting, to a terminal, first configuration information and second configuration information for conditional handover, the first configuration information being configuration information for instructing a first handover event that a target PCell needs to satisfy when performing conditional handover of a PCell, and the second configuration information being configuration information for instructing a second handover event that a PSCell needs to satisfy.

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

9. The method according to claim 7, wherein the first handover event includes an A3 event and / or an A5 event, the second handover event is an A2 event or an A4 event or a first event, and the first event is a newly defined event.

10. The method according to claim 7, wherein the network-side device includes a master node and / or a secondary node.

11. An information transmission method executed by a terminal, the method comprising: transmitting first information related to success or failure of conditional handover to a network-side device, wherein 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 a handover event that triggers a conditional handover, and A network-side device configured for a conditional handover for a terminal, and A first time difference that is the difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, and Relevant event information in which the handover event that triggers the conditional handover is satisfied, and An information transmission method including at least one of a second time difference that is the difference between the time when the handover event that triggers the conditional handover corresponding to the PCell is satisfied and the time when the handover event that triggers the conditional handover corresponding to the PSCell is satisfied.

12. The method includes: Receiving first configuration information and second configuration information of a conditional handover transmitted from a network-side device, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when executing the conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that the PSCell needs to satisfy, the method according to claim 11.

13. The first configuration information includes one or more candidate target PCells, and the first handover event that triggers the 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 the conditional handover corresponding to the PSCell and / or a threshold value corresponding to the second handover event, the method according to claim 12.

14. An information processing method executed by a network-side device, the method including: Receiving first information transmitted from a terminal, and Adjusting configuration information of a conditional handover configured for the terminal according to the first information, The first information includes: A relevant identifier of a cell that triggers a conditional handover, A handover event that triggers a conditional handover, and A threshold value corresponding to the handover event that triggers a conditional handover, A network-side device configured for conditional handover for a terminal, A first time difference that is a difference between the time when configuration information of conditional handover is received by the terminal and the time when a handover event of the conditional handover is satisfied, Related event information in which a handover event that triggers conditional handover is satisfied, An information processing method including at least one of a second time difference that is a difference between the time when a handover event that triggers conditional handover corresponding to a PCell is satisfied and the time when a handover event that triggers conditional handover corresponding to a PSCell is satisfied.

15. The method includes: transmitting, to the terminal, first configuration information and second configuration information of conditional handover, where the first configuration information is configuration information for instructing a first handover event that a target PCell needs to satisfy when executing conditional handover of the PCell, and the second configuration information is configuration information for instructing a second handover event that the PSCell needs to satisfy, the method according to claim 14.

16. 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, the method according to claim 15.

17. A conditional handover device executed by a terminal connected to a source primary cell (PCell) and a primary secondary cell (PSCell), the device including: a handover module for executing a conditional handover procedure from a source PCell to a target PCell when there is a target primary cell (PCell) that satisfies a first handover event and the PSCell satisfies a second handover event, the conditional handover device.

18. An information transmission device executed by a network-side device, the device including: First configuration information and second configuration information for conditional handover, the first configuration information being configuration information for instructing a first handover event that a target PCell needs to satisfy when performing conditional handover of a PCell, and the second configuration information being configuration information for instructing a second handover event that a PSCell needs to satisfy, and including a first transmission module for transmitting the first configuration information and the second configuration information to a terminal.

19. An information transmission device executed by a terminal, the device including: a second transmission module for transmitting first information related to success or failure of conditional handover to a network-side device, wherein 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 configured for 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, an information transmission device including at least one of a second time difference that is a difference between the time when the handover event that triggers conditional handover is satisfied corresponding to the PCell and the time when the handover event that triggers conditional handover is satisfied corresponding to the PSCell.

20. An information processing device executed by a network-side device, the device including: a third reception module for receiving the first information transmitted from the terminal, and a third processing module for adjusting the configuration information of conditional handover configured for the terminal according to the first information, wherein 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 configured for conditional handover for the terminal, The first time difference, which is the difference between the time when the terminal receives the configuration information of the conditional handover and the time when the handover event of the conditional handover is satisfied, and The related event information in which the handover event that triggers the conditional handover is satisfied, and An information processing apparatus including at least one of the second time difference, which is the difference between the time when the handover event that triggers the conditional handover corresponding to the PCell is satisfied and the time when the handover event that triggers the conditional handover corresponding to the PSCell is satisfied.

21. A terminal connected to a source primary cell (PCell) and a primary secondary cell (PSCell), including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor When there is a target primary cell (PCell) that satisfies the first handover event and the PSCell satisfies the second handover event, it is for performing an operation of executing a conditional handover procedure from the source PCell to the target PCell.

22. A network-side device including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor For performing a procedure of transmitting, via the transceiver, first configuration information and second configuration information of the conditional handover to the terminal, the first configuration information being configuration information for instructing a first handover event that the target PCell needs to satisfy when the conditional handover of the PCell is executed, and the second configuration information being configuration information for instructing a second handover event that the PSCell needs to satisfy.

23. A terminal including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor For performing a procedure of transmitting, via the transceiver, first information related to the success or failure of the conditional handover to the network-side device, and The first information includes The related identifier of the cell that triggers the conditional handover, The handover event that triggers the conditional handover, and The threshold value corresponding to the handover event that triggers the conditional handover. A network-side device configured for conditional handover for a terminal, A first time difference that is a difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, Related event information in which a handover event that triggers a conditional handover is satisfied, A terminal including at least one of a second time difference that is a difference between the time when a handover event that triggers a conditional handover corresponding to a PCell is satisfied and the time when a handover event that triggers a conditional handover corresponding to a PSCell is satisfied.

24. A network-side device including a processor and a transceiver that transmits and receives data under the control of the processor, wherein the processor A procedure for receiving first information transmitted from a terminal via the transceiver, For performing a procedure of adjusting configuration information of a conditional handover configured for the terminal according to the first information, The first information includes A related identifier of a cell that triggers a conditional handover, A handover event that triggers a conditional handover, A threshold value corresponding to a handover event that triggers a conditional handover, A network-side device configured for conditional handover for a terminal, A first time difference that is a difference between the time when the configuration information of the conditional handover is received by the terminal and the time when the handover event of the conditional handover is satisfied, Related event information in which a handover event that triggers a conditional handover is satisfied, A network-side device including at least one of a second time difference that is a difference between the time when a handover event that triggers a conditional handover corresponding to a PCell is satisfied and the time when a handover event that triggers a conditional handover corresponding to a PSCell is satisfied.

25. A terminal 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 conditional handover method according to any one of Claims 1 to 7 is realized, or the information transmission method according to any one of Claims 12 to 14 is realized.

26. 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 according to any one of claims 8 to 11 is realized, or the information processing method according to any one of claims 15 to 17 is realized.

27. 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 according to any one of claims 1 to 6 are realized, or the steps in the information transmission method according to any one of claims 7 to 10 are realized, or the steps in the information transmission method according to any one of claims 11 to 13 are realized, or the steps in the information processing method according to any one of claims 14 to 16 are realized.

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