Inter-system switching method and device and computer readable storage medium

Abstract

The invention provides an inter-system switching method and device and a computer readable storage medium, and the method comprises the steps: transmitting measurement configuration information to a target terminal, wherein the measurement configuration information is used for indicating the terminal to carry out B2 event measurement and only carries out measurement on an inter-system adjacent region supporting RedCap capability when the target terminal is identified as RedCap UE with reduced capability; receiving a measurement result sent by the target terminal after the target terminal initiates B2 event measurement on the inter-system neighbor cell only supporting RedCap capability according to the measurement configuration information; and in response to the fact that the measurement result meets the B2 event, sending a switching command to the target terminal, so that the target terminal is switched from the current service cell to the inter-system neighbor cell meeting the B2 event. According to the method, the device and the computer readable storage medium, the problem that in the prior art, when a RedCap terminal carries out cell switching, the RedCap terminal may be switched to an inter-system neighbor cell which does not support RedCap capability, so that switching fails can be solved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for inter-system handover and a computer-readable storage medium. Background Art

[0002] In the handover process of a 5G terminal from LTE (Long Term Evolution) to 5G, after receiving the measurement configuration, the terminal will perform measurements, and after the measurements are completed, a measurement event report will be reported. The base station determines whether to perform a cell handover based on the measurement report.

[0003] Currently, as RedCap (reduced capability UE) is about to be commercialized, in the scenario of a RedCap terminal handover from LTE to 5G, since the LTE network does not have the ability to identify RedCap networks, when a RedCap terminal performs a cell handover, it may be handed over to an inter-system neighbor cell that does not support RedCap capabilities, resulting in a handover failure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and apparatus for inter-system handover and a computer-readable storage medium for the above-mentioned deficiencies of the prior art, so as to solve the problem that in the prior art, when a RedCap terminal performs a cell handover, it may be handed over to an inter-system neighbor cell that does not support RedCap capabilities, resulting in a handover failure.

[0005] In a first aspect, the present invention provides a method for inter-system handover, including:

[0006] When it is identified that the target terminal is a reduced-capability terminal, i.e., a RedCap UE, measurement configuration information for instructing the terminal to perform B2 event measurements and only measure inter-system neighbor cells that support RedCap capabilities is sent to the target terminal;

[0007] After receiving the measurement result sent by the target terminal after initiating B2 event measurements on inter-system neighbor cells that only support RedCap capabilities according to the measurement configuration information;

[0008] In response to the measurement result satisfying the B2 event, a handover command is sent to the target terminal, so that the target terminal is handed over from the current serving cell to the inter-system neighbor cell that satisfies the B2 event.

[0009] Further, before sending the measurement configuration information for instructing the terminal to perform B2 event measurements and only measure inter-system neighbor cells that support RedCap capabilities to the target terminal, the method further includes:

[0010] Obtaining the terminal capability information of the target terminal;

[0011] In response to a field indicating that the target terminal is a RedCap UE included in the terminal capability information, identify the target terminal as a RedCap UE.

[0012] Further, before the measurement configuration information for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells supporting RedCap capabilities is sent to the target terminal, the method further includes:

[0013] For each inter-system neighboring cell near the current serving cell, identify whether the inter-system neighboring cell supports RedCap capabilities according to the System Information Block 1 (SIB1) message corresponding to the inter-system neighboring cell.

[0014] Further, the identifying whether the inter-system neighboring cell supports RedCap capabilities according to the SIB1 message corresponding to the inter-system neighboring cell specifically includes:

[0015] If the SIB1 message corresponding to the inter-system neighboring cell includes the In-Frequency Reselection Indicator (IFRI) indication information, identify that the inter-system neighboring cell supports RedCap capabilities.

[0016] Further, before the handover command is sent to the target terminal in response to the measurement result satisfying the B2 event, the method further includes:

[0017] If the measurement result indicates that the signal quality of the target terminal in the current serving cell is lower than a preset first threshold value, and the signal quality in the inter-system neighboring cell that only supports RedCap capabilities is higher than a preset second threshold value, determine that the measurement result satisfies the B2 event, where the first threshold value is less than the second threshold value.

[0018] In a second aspect, the present invention provides an inter-system handover device, including:

[0019] A sending module, configured to send measurement configuration information for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells supporting RedCap capabilities to the target terminal when it is identified that the target terminal is a RedCap UE with reduced capabilities;

[0020] A receiving module, connected to the sending module, configured to receive the measurement result sent by the target terminal after initiating B2 event measurement on the inter-system neighboring cells that only support RedCap capabilities according to the measurement configuration information;

[0021] A sending module, connected to the receiving module, is configured to send a handover command to the target terminal in response to the measurement result satisfying the B2 event, so that the target terminal switches from the current serving cell to an inter-system neighbor cell that satisfies the B2 event.

[0022] Further, the device further includes:

[0023] An acquisition module, configured to acquire the terminal capability information of the target terminal;

[0024] A first identification module, configured to identify the target terminal as a RedCap UE in response to a field indicating that the target terminal is a RedCap UE being included in the terminal capability information.

[0025] Further, the device further includes:

[0026] A second identification module, configured to identify whether each inter-system neighbor cell near the current serving cell supports the RedCap capability according to the System Information Block 1 (SIB1) message corresponding to the inter-system neighbor cell.

[0027] Further, the second identification module specifically includes:

[0028] An identification unit, configured to identify that the inter-system neighbor cell supports the RedCap capability if the SIB1 message corresponding to the inter-system neighbor cell includes the In-Frequency Reselection Indicator (IFRI) indication information.

[0029] Further, the device further includes:

[0030] A determination module, configured to determine that the measurement result satisfies the B2 event if the measurement result indicates that the signal quality of the target terminal in the current serving cell is lower than a preset first threshold value and the signal quality of the target terminal in the inter-system neighbor cell that only supports the RedCap capability is higher than a preset second threshold value, where the first threshold value is less than the second threshold value.

[0031] In a third aspect, the present invention provides an inter-system handover device, including a memory and a processor, where a computer program is stored in the memory, and the processor is configured to run the computer program to implement the inter-system handover method described in the first aspect above.

[0032] In a fourth aspect, the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the inter-system handover method described in the first aspect above is implemented.

[0033] The inter-system handover method, device and computer-readable storage medium provided by the present invention first, when identifying that the target terminal is a reduced-capability terminal, i.e., a RedCap UE, send measurement configuration information for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells that support RedCap capabilities to the target terminal; then receive the measurement results sent by the target terminal after initiating B2 event measurement on the inter-system neighboring cells that only support RedCap capabilities according to the measurement configuration information; and finally, in response to the measurement results satisfying the B2 event, send a handover command to the target terminal so that the target terminal can hand over from the current serving cell to the inter-system neighboring cell that satisfies the B2 event. By removing the inter-system neighboring cells that do not support RedCap capabilities from the measurement configuration information sent to the RedCap UE, the present invention enables the RedCap UE not to measure such cells, avoiding the situation where the measurement results satisfy the B2 event but the handover fails because the inter-system neighboring cell that satisfies the B2 event does not support RedCap capabilities, and solves the problem in the prior art that when a RedCap terminal performs cell handover, it may hand over to an inter-system neighboring cell that does not support RedCap capabilities, resulting in handover failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flowchart of an inter-system handover method according to Embodiment 1 of the present invention;

[0035] Figure 2 It is a schematic diagram of the movement of a RedCap UE according to an embodiment of the present invention towards the coverage area of an inter-system neighboring cell;

[0036] Figure 3 It is a schematic structural diagram of an inter-system handover device according to Embodiment 2 of the present invention;

[0037] Figure 4 It is a schematic structural diagram of an inter-system handover device according to Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] To enable those skilled in the art to better understand the technical solutions of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] It can be understood that the specific embodiments and drawings described herein are only used to explain the present invention, rather than limiting the present invention.

[0040] It can be understood that, without conflict, the various embodiments and features in the embodiments of the present invention can be combined with each other.

[0041] It can be understood that for the convenience of description, only the parts related to the present invention are shown in the drawings of the present invention, and the parts unrelated to the present invention are not shown in the drawings.

[0042] It is understandable that each unit and module involved in the embodiments of the present invention may correspond to only one entity structure, or may be composed of multiple entity structures. Alternatively, multiple units and modules may also be integrated into one entity structure.

[0043] It is understandable that, without conflict, the functions and steps marked in the flowcharts and block diagrams of the present invention may occur in an order different from that marked in the accompanying drawings.

[0044] It is understandable that in the flowcharts and block diagrams of the present invention, the possible architectures, functions, and operations of the systems, devices, equipment, and methods according to the embodiments of the present invention are shown. Among them, each block in the flowchart or block diagram may represent a unit, module, program segment, or code, which contains executable instructions for implementing the specified function. Moreover, each block or combination of blocks in the block diagram and flowchart may be implemented by a hardware-based system for implementing the specified function, or by a combination of hardware and computer instructions.

[0045] It is understandable that the units and modules involved in the embodiments of the present invention may be implemented in software or in hardware. For example, the units and modules may be located in the processor.

[0046] Application Overview

[0047] In the handover process of a 5G terminal from LTE to 5G, after receiving the measurement configuration, the terminal will perform measurements, and after the measurements are completed, a measurement event report will be reported. The base station determines whether to perform a cell handover based on the measurement report.

[0048] Currently, RedCap is about to be commercially available. In the scenario of a RedCap terminal handover from LTE to 5G, since the LTE network does not have the ability to identify the RedCap network, according to the current signaling process, when a RedCap terminal hands over from LTE to a 5G cell, the LTE network may perform a handover to a non-RedCap cell, resulting in a handover failure.

[0049] In summary, in the prior art, when a RedCap terminal performs a cell handover, it may hand over to an inter-system neighbor cell that does not support RedCap capabilities, resulting in a handover failure.

[0050] In view of the above technical problems, the present application provides a method, apparatus and computer-readable storage medium for inter-system handover. By removing the inter-system neighboring cells that do not support the RedCap capability from the measurement configuration information sent to the RedCap UE, the RedCap UE is prevented from measuring such cells, avoiding the situation where the measurement result meets the B2 event, but the inter-system neighboring cell that meets the B2 event does not support the RedCap capability, resulting in a handover failure. This solves at least the problem in the prior art that when a RedCap terminal performs a cell handover, it may be handed over to an inter-system neighboring cell that does not support the RedCap capability, resulting in a handover failure.

[0051] After introducing the basic principle of the present application, various non-limiting embodiments of the present application will be specifically introduced with reference to the accompanying drawings.

[0052] Embodiment 1:

[0053] This embodiment provides an inter-system handover method, as Figure 1 shown, the method includes:

[0054] Step S101: When it is identified that the target terminal is a reduced-capability terminal, i.e., a RedCap UE, send measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells that support the RedCap capability.

[0055] Specifically, when the current serving cell identifies that the target terminal is a RedCap UE, the current serving cell establishes a DRB (Data Radio Bearer) through RRC (Radio Resource Control) Connection Reconfiguration, and sends measurement configuration (Measurement conf) information to the target terminal in the reconfiguration message to instruct the target terminal to perform B2 event measurement; since the current serving cell has detected that the terminal is a RedCap UE, only the measurement of the inter-system neighboring cells that support the RedCap capability is sent in the neighboring cell measurement configuration information.

[0056] In an alternative embodiment, before sending the measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells that support the RedCap capability, the method further includes:

[0057] Obtain the terminal capability information of the target terminal;

[0058] In response to a field for indicating that the target terminal is a RedCap UE being included in the terminal capability information, the target terminal is identified as a RedCap UE.

[0059] Specifically, the current serving cell queries the target terminal's capabilities, the target terminal reports the terminal capability information, and in response to the current serving cell identifying that the UE-NR-Capability (i.e., the terminal capability information) contains the supportOfRedCap-r17 field, the target terminal is identified as a RedCap UE.

[0060] In an alternative embodiment, before the measurement configuration information for instructing the target terminal to perform B2 event measurement and only measure the inter-system neighboring cells supporting RedCap capabilities is sent to the target terminal, the method further includes:

[0061] For each inter-system neighboring cell near the current serving cell, according to the SIB1 (System Information Block 1) message corresponding to the inter-system neighboring cell, identify whether the inter-system neighboring cell supports RedCap capabilities.

[0062] Specifically, obtain whether the inter-system neighboring cell supports RedCap capabilities from the broadcast message SIB1 of the inter-system neighboring cell.

[0063] In an alternative embodiment, the identifying whether the inter-system neighboring cell supports RedCap capabilities according to the SIB1 message corresponding to the inter-system neighboring cell specifically includes:

[0064] If the SIB1 message corresponding to the inter-system neighboring cell contains IFRI (Intra Frequency Reselection Indicator) indication information, identify that the inter-system neighboring cell supports RedCap capabilities.

[0065] Specifically, if the broadcast message SIB1 of the inter-system neighboring cell carries IFRI indication information, identify that the inter-system neighboring cell supports RedCap capabilities.

[0066] Step S102: Receive the measurement result sent by the target terminal after initiating a B2 event measurement on the inter-system neighboring cells that only support RedCap capabilities according to the measurement configuration information.

[0067] Specifically, the target terminal receives the measurement configuration information from the current serving cell, initiates a B2 event measurement on the inter-system neighboring cells that only support RedCap capabilities, and sends the measurement result to the current serving cell, and the current serving cell receives the measurement result sent by the target terminal.

[0068] Step S103: In response to the measurement result satisfying the B2 event, send a handover command to the target terminal, so that the target terminal switches from the current serving cell to an inter-system neighbor cell that satisfies the B2 event.

[0069] Specifically, in response to the measurement result satisfying the B2 event, the current serving cell sends a handover command to the target terminal. The target terminal receives the handover command sent by the serving cell and initiates a handover process to complete the handover and camp on an inter-system neighbor cell that satisfies the B2 event and supports RedCap capabilities.

[0070] It should be noted that if the measurement result indicates that the signal quality of the target terminal in the current serving cell is lower than a preset first threshold, and the signal quality in the inter-system neighbor cell that only supports RedCap capabilities is higher than a preset second threshold, it is determined that the measurement result satisfies the B2 event, where the first threshold is less than the second threshold.

[0071] In a specific embodiment, an inter-system handover method provided in this embodiment is applied to the LTE base station provided in this embodiment. The inter-system handover method may specifically include the following steps:

[0072] Step 1: When the LTE base station A manually configures neighbor cell information, or obtains whether its 5G neighbor cell supports RedCap through the broadcast message SIB1 of the neighbor cell. If the neighbor cell carries the IFRI indication information (Intra Frequency Reselection Indicator), it indicates that the neighbor cell supports RedCap capabilities;

[0073] Step 2: The RedCap dual-mode terminal (LTE + RedCap) completes the access process after powering on and registering under an LTE cell. Cell A initiates a service and is in the RRC connected (Radio Resource Control Connected) state;

[0074] Step 3: The LTE cell A queries the terminal capabilities. The terminal reports the capability information to the LTE base station A. The LTE cell A identifies that the terminal is a Redcap UE (the UE-NR-Capability includes the supportOfRedCap-r17 field);

[0075] Step 4: As Figure 2 shown, the RedCap UE moves towards the NR and RedCap coverage areas. Cell B is a 5G NR cell that does not support RedCap; Cell C is a 5G RedCap cell;

[0076] Step 5: Since the LTE signal weakens and the 5G signal is in an excellent state, LTE cell A establishes a DRB through RRC Connection Reconfiguration, and measurement configuration information (Measurement conf) will be sent in the reconfiguration message to instruct the terminal to perform B2 event measurement. Since LTE cell A has detected that the terminal is a RedCap UE and cell B does not support RedCap, only the measurement of neighboring cell C is sent in the neighboring cell measurement configuration information, and the measurement of neighboring cell B is not sent, thus avoiding the terminal handover failure caused by the non - support of RedCap by neighboring cell B. Among them, the B2 event measurement is for the terminal to measure the target cell, measure whether the signal quality of the current serving LTE cell is lower than the specified threshold value, and whether the signal quality of the heterogeneous system 5G neighboring cell is higher than the specified threshold value.

[0077] Step 6: The terminal receives the measurement configuration from LTE Cell A and initiates B2 event measurement on the target cell Cell C.

[0078] Step 7: If the measurement result meets the B2 event, the terminal triggers a B2 measurement report.

[0079] Step 8: LTE Cell A receives the measurement report of the B2 event and initiates a handover command.

[0080] Step 9: The terminal initiates a handover process, completes the handover, and camps on the target cell C that supports RedCap UE.

[0081] It is worth mentioning that the LTE base station of the present invention can obtain whether its 5G neighboring cells support the RedCap capability, and can also identify whether the UE supports RedCap. When the LTE base station identifies that the terminal is a RedCap UE, during the heterogeneous system neighboring cell measurement, it will remove the 5G cells that do not support the RedCap capability from the neighboring cell list, so that the RedCap UE does not measure such cells, avoiding the situation where the handover conditions of the heterogeneous system are met, but the handover fails because the target cell does not support the RedCap UE, effectively avoiding the problem that the LTE cell cannot identify the RedCap capability during the handover process and reducing ineffective handovers.

[0082] The inter-system handover method provided by the embodiments of the present invention first, when identifying that the target terminal is a reduced-capability terminal RedCap UE, sends measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells supporting RedCap capability; then receives the measurement results sent by the target terminal after initiating B2 event measurement on the inter-system neighboring cells that only support RedCap capability according to the measurement configuration information; and finally, in response to the measurement results satisfying the B2 event, sends a handover command to the target terminal to enable the target terminal to hand over from the current serving cell to the inter-system neighboring cell satisfying the B2 event. By removing the inter-system neighboring cells that do not support RedCap capability from the measurement configuration information sent to the RedCap UE, the present invention enables the RedCap UE not to measure such cells, avoiding the situation where the measurement results satisfy the B2 event but the inter-system neighboring cell satisfying the B2 event does not support RedCap capability, resulting in a handover failure, and solving the problem in the prior art that when a RedCap terminal performs cell handover, it may hand over to an inter-system neighboring cell that does not support RedCap capability, resulting in a handover failure.

[0083] Embodiment 2:

[0084] As Figure 3 shown, this embodiment provides an inter-system handover device for executing the above inter-system handover method, including:

[0085] A sending module 11, configured to, when identifying that the target terminal is a reduced-capability terminal RedCap UE, send measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells supporting RedCap capability;

[0086] A receiving module 12, connected to the sending module 11, configured to receive the measurement results sent by the target terminal after initiating B2 event measurement on the inter-system neighboring cells that only support RedCap capability according to the measurement configuration information;

[0087] A sending module 13, connected to the receiving module 12, configured to, in response to the measurement results satisfying the B2 event, send a handover command to the target terminal to enable the target terminal to hand over from the current serving cell to the inter-system neighboring cell satisfying the B2 event.

[0088] Further, the device further includes:

[0089] An obtaining module, configured to obtain the terminal capability information of the target terminal;

[0090] A first identification module, configured to identify the target terminal as a RedCap UE in response to a field indicating that the target terminal is a RedCap UE included in the terminal capability information.

[0091] Further, the apparatus further includes:

[0092] A second identification module, configured to, for each inter-system neighbor cell near the current serving cell, identify whether the inter-system neighbor cell supports RedCap capability according to the System Information Block 1 (SIB1) message corresponding to the inter-system neighbor cell.

[0093] Further, the second identification module specifically includes:

[0094] An identification unit, configured to identify that the inter-system neighbor cell supports RedCap capability if the SIB1 message corresponding to the inter-system neighbor cell includes Intra-Frequency Reselection Indicator (IFRI) indication information.

[0095] Further, the apparatus further includes:

[0096] A determination module, configured to determine that the measurement result satisfies a B2 event if the measurement result indicates that the signal quality of the target terminal in the current serving cell is lower than a preset first threshold and the signal quality of the target terminal in the inter-system neighbor cell that only supports RedCap capability is higher than a preset second threshold, where the first threshold is less than the second threshold.

[0097] Embodiment 3:

[0098] Reference Figure 4 , this embodiment provides an inter-system handover apparatus, including a memory 21 and a processor 22. A computer program is stored in the memory 21, and the processor 22 is configured to run the computer program to execute the inter-system handover method in Embodiment 1.

[0099] Wherein, the memory 21 is connected to the processor 22. The memory 21 may adopt a flash memory, a read-only memory, or other memories, and the processor 22 may adopt a central processing unit or a single-chip microcomputer.

[0100] Embodiment 4:

[0101] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the inter-system handover method in Embodiment 1 is implemented.

[0102] The computer-readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, computer program modules, or other data. The computer-readable storage medium includes, but is not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), flash memory or other memory technologies, CD-ROM (Compact Disc Read-Only Memory), digital versatile disc (DVD) or other optical disc storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer.

[0103] In summary, for the inter-system handover method, apparatus, and computer-readable storage medium provided by the embodiments of the present invention, first, when it is recognized that the target terminal is a Reduced-Capability UE (RedCap UE), measurement configuration information for instructing the terminal to perform B2 event measurement and only measure inter-system neighboring cells supporting RedCap capabilities is sent to the target terminal; then, after receiving the measurement result sent by the target terminal after initiating B2 event measurement on the inter-system neighboring cells supporting only RedCap capabilities according to the measurement configuration information; finally, in response to the measurement result satisfying the B2 event, a handover command is sent to the target terminal, so that the target terminal can hand over from the current serving cell to the inter-system neighboring cell satisfying the B2 event. By removing the inter-system neighboring cells that do not support RedCap capabilities from the measurement configuration information sent to the RedCap UE, the present invention enables the RedCap UE not to measure such cells, avoiding the situation where the measurement result satisfies the B2 event, but the inter-system neighboring cell satisfying the B2 event does not support RedCap capabilities, resulting in a handover failure, and solving the problem in the prior art that when a RedCap terminal performs cell handover, it may hand over to an inter-system neighboring cell that does not support RedCap capabilities, resulting in a handover failure.

[0104] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention, and the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. An inter-system handover method, characterized in that, The method includes: When it is recognized that the target terminal is a Reduced Capability UE (RedCap UE), sending measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells that support RedCap capability; Receiving the measurement results sent by the target terminal after initiating B2 event measurement on the inter-system neighboring cells that only support RedCap capability according to the measurement configuration information; In response to the measurement results satisfying the B2 event, sending a handover command to the target terminal so that the target terminal can hand over from the current serving cell to the inter-system neighboring cell that satisfies the B2 event.

2. The method according to claim 1, characterized in that, Before sending the measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells that support RedCap capability, the method further includes: Obtaining the terminal capability information of the target terminal; In response to the terminal capability information including a field for indicating that the target terminal is a RedCap UE, identifying the target terminal as a RedCap UE.

3. The method according to claim 1, characterized in that, Before sending the measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells that support RedCap capability, the method further includes: For each inter-system neighboring cell near the current serving cell, identifying whether the inter-system neighboring cell supports RedCap capability according to the System Information Block 1 (SIB1) message corresponding to the inter-system neighboring cell.

4. The method according to claim 3, characterized in that, The identifying whether the inter-system neighboring cell supports RedCap capability according to the SIB1 message corresponding to the inter-system neighboring cell specifically includes: If the SIB1 message corresponding to the inter-system neighboring cell includes Intra-Frequency Reselection Indicator (IFRI) indication information, identifying that the inter-system neighboring cell supports RedCap capability.

5. The method according to claim 1, characterized in that, Before sending the handover command to the target terminal in response to the measurement results satisfying the B2 event, the method further includes: If the measurement results indicate that the signal quality of the target terminal in the current serving cell is lower than a preset first threshold value and the signal quality in the inter-system neighboring cell that only supports RedCap capability is higher than a preset second threshold value, determining that the measurement results satisfy the B2 event, where the first threshold value is less than the second threshold value.

6. An inter-system handover device, characterized in that, It includes: A sending module, configured to send measurement configuration information to the target terminal for instructing the terminal to perform B2 event measurement and only measure the inter-system neighboring cells that support RedCap capability when it is recognized that the target terminal is a RedCap UE; A receiving module, connected to the sending module, configured to receive the measurement results sent by the target terminal after initiating B2 event measurement on the inter-system neighboring cells that only support RedCap capability according to the measurement configuration information; A sending module, connected to the receiving module, configured to send a handover command to the target terminal in response to the measurement results satisfying the B2 event so that the target terminal can hand over from the current serving cell to the inter-system neighboring cell that satisfies the B2 event.

7. The device according to claim 6, characterized in that, The device further includes: An acquisition module, configured to acquire the terminal capability information of the target terminal; A first identification module, configured to identify the target terminal as a RedCap UE in response to a field indicating that the target terminal is a RedCap UE included in the terminal capability information.

8. The device according to claim 6, characterized in that, The apparatus further includes: A second identification module, configured to identify, for each inter-system neighboring cell near the current serving cell, whether the inter-system neighboring cell supports RedCap capability according to the System Information Block 1 (SIB1) message corresponding to the inter-system neighboring cell.

9. The device according to claim 8, characterized in that, The second identification module specifically includes: An identification unit, configured to identify that the inter-system neighboring cell supports RedCap capability if the SIB1 message corresponding to the inter-system neighboring cell includes intra-frequency reselection indication flag (IFRI) indication information.

10. The device according to claim 6, characterized in that, The apparatus further includes: A determination module, configured to determine that the measurement result satisfies a B2 event if the measurement result indicates that the signal quality of the target terminal in the current serving cell is lower than a preset first threshold and the signal quality of the target terminal in the inter-system neighboring cell that only supports RedCap capability is higher than a preset second threshold, where the first threshold is less than the second threshold.

11. An inter-system handover device, characterized in that, It includes a memory and a processor, and a computer program is stored in the memory. The processor is configured to run the computer program to implement the inter-system handover method according to any one of claims 1-5.

12. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium. When the computer program is executed by the processor, it implements the inter-system handover method according to any one of claims 1-5.

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