Migration method, storage medium and electronic device under hybrid networking

Abstract

The application discloses a migration method under hybrid networking, applied to an NR side base station in non-standalone networking (NSA), comprising: according to the configuration of a same frequency interference measurement parameter, issuing a same frequency interference measurement to a mixed mode terminal; based on the NR neighbor cell measurement information reported by the mixed mode terminal, determining whether the corresponding NR neighbor cell supports NSA access; and sending the determination result of whether the NR neighbor cell supports NSA access to an LTE side base station in the NSA. Accordingly, the application discloses a migration method under hybrid networking, applied to an LTE side base station in non-standalone networking (NSA), comprising: receiving an NR neighbor cell list supporting NSA access sent by an NR side base station in the NSA; detecting the signal condition of each NR neighbor cell in the NR neighbor cell list and comparing with a handover condition; and after the handover condition is met, triggering the mixed mode terminal to disconnect the current connection to migrate to the corresponding NR neighbor cell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mobile communication, and in particular to a migration method from NSA to SA under NSA and SA hybrid networking, a storage medium and an electronic device. BACKGROUND

[0002] With the development of mobile communication technology, 5G has gradually entered the commercial stage. Based on the consideration of construction cost, 5G network will continue to evolve based on the existing network architecture, for example, by synergistically integrating different coverage range cellular networks to improve network capacity, access transmission rate, thereby improving network coverage quality or increasing system throughput.

[0003] However, because the cell radius of the 5G base station is reduced relative to the cell radius of the 4G base station, the movement of the user will result in more frequent cell switching. In this case, since the mobility management of the user becomes more complex than the 4G network, it may be difficult to guarantee the network service quality in some scenarios. For example, in the scenario of NSA (Non-Standalone, non-independent networking) and SA (Standalone, independent networking) hybrid networking, the terminal is connected to the NR (New Radio, new radio access network) cell supporting NSA while accessing the LTE (Long Time Evaluation, long term evolution) cell. When the terminal moves to a certain position, there may be a NR neighbor cell supporting SA with better signal quality. At this time, if the NR neighbor cell supporting SA does not support dual connectivity, the terminal cannot attach to the NR neighbor cell with better signal quality by changing the secondary cell. On the one hand, since the terminal supporting NSA access does not meet the handover condition, the terminal supporting NSA access cannot migrate to the NR neighbor cell; on the other hand, because the terminal supporting NSA access is interfered by the NR neighbor cell, the terminal supporting NSA access cannot enjoy the 5G high-speed service experience, thereby affecting the user experience. SUMMARY

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] In one aspect, the embodiments of the present application provide a migration method under hybrid networking, applied to an NR side base station in NSA (Non-Standalone, non-independent networking), comprising the following steps: according to the configuration of the same frequency interference measurement parameter, issuing the same frequency interference measurement to the mixed mode terminal; based on the NR neighbor cell measurement information reported by the mixed mode terminal, determining whether the corresponding NR neighbor cell supports NSA access; and sending the determination result of whether the NR neighbor cell supports NSA access to the LTE side base station in the NSA.

[0006] Correspondingly, the embodiment of the present application provides a migration method under hybrid networking, applied to an LTE side base station in a non-standalone network (NSA), comprising the following steps: receiving a NR neighbor cell list supporting NSA access sent by a NR side base station in the NSA; detecting signal conditions of each NR neighbor cell in the NR neighbor cell list and comparing with a handover condition; and triggering a mixed-mode terminal to disconnect a current connection to migrate to a corresponding NR neighbor cell after the handover condition is met.

[0007] In another aspect, the embodiment of the present application provides a migration method under hybrid networking, applied to a mixed-mode terminal in a non-standalone network (NSA) in dual connectivity, comprising the following steps: connecting to a NR side base station in the NSA to receive a same-frequency interference measurement issued by the NR side base station; searching for NR neighbor cells at a current location and reporting measurement information of a NR neighbor cell meeting a threshold condition to the NR side base station; and migrating to a corresponding NR neighbor cell in response to a handover instruction sent by an LTE side base station in the NSA.

[0008] In another aspect, the embodiment of the present application provides an electronic device, comprising: a memory for storing a program; and a processor for executing the program stored in the memory, wherein when the processor executes the program stored in the memory, the processor is configured to execute the migration method under hybrid networking as described above.

[0009] In still another aspect, the embodiment of the present application provides a storage medium storing computer executable instructions, wherein the computer executable instructions are configured to execute the migration method under hybrid networking as described above.

[0010] The scheme of the embodiment of the present application solves the problem that a terminal connected to an NSA cannot enjoy 5G high-speed service experience due to same-frequency interference of a NR neighbor cell. The method of the present application can reduce signaling overhead relative to the original inter-system handover process, and avoid the LTE side base station from directly issuing an inter-system measurement task to the terminal, so that the peak flow can be maintained throughout the handover process.

[0011] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be learned from practice of the present application. The purpose and other advantages of the present application can be achieved and obtained by the structure specifically pointed out in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the technical scheme of the present application, and constitute a part of the specification, and are used to explain the technical scheme of the present application together with the embodiments of the present application, and do not constitute a limitation to the technical scheme of the present application.

[0013] Figure 1is a connection architecture schematic diagram in a mixed networking scenario;

[0014] Figure 2 is a migration method flowchart of an NR side base station applied in a non-standalone network NSA provided by the present application;

[0015] Figure 3 is a migration schematic diagram of an NR side base station applied in a non-standalone network NSA provided by the present application;

[0016] Figure 4 is another migration schematic diagram of an NR side base station applied in a non-standalone network NSA provided by the present application;

[0017] Figure 5 is a schematic diagram of an NR side base station storing an NR neighboring cell connection state in the present application;

[0018] Figure 6 is a migration method flowchart of an LTE side base station applied in a non-standalone network NSA provided by the present application;

[0019] Figure 7 is a migration schematic diagram of an LTE side base station applied in a non-standalone network NSA provided by the present application;

[0020] Figure 8 is a schematic diagram of an LTE side base station storing an NR neighboring cell connection state in the present application;

[0021] Figure 9 is a migration method flowchart of a mixed mode terminal applied in a non-standalone network NSA provided by the present application;

[0022] Figure 10 is a structural schematic diagram of a base station provided by the present application;

[0023] Figure 11 is a structural schematic diagram of a mobile mixed mode terminal provided by the present application. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0025] It should be understood that, in the description of the embodiments of the present application, the meaning of multiple (or multiple items) is two or more, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If there is a description of "first", "second" and the like, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0026] For the architecture of the 5G network, in order to save the initial cost and reuse the existing equipment as much as possible, the operators generally adopt the NSA and SA hybrid networking mode to lay the 5G network. Referring to the network architecture diagram shown in Figure 1 , on the one hand, the original 4G base station eNB (Evolved Node B) or the enhanced 4G base station in the 4G network is connected with the mixed-mode terminal supporting NSA / SA access such as mobile phones or tablets. On the other hand, part of the data in the user plane that causes a bottleneck to the 4G base station is migrated to the 5G base station (gNB). The mixed-mode terminal needs to be connected with the 5G base station supporting NSA to transmit and receive this part of data, while the control plane data and the remaining user plane data continue to be transmitted and received through the 4G base station. This forms a cell (NSA cell) of the mixed networking of the 4G base station (or the enhanced 4G base station) and the 5G base station supporting NSA. At the same time, because the cell radius of the 5G base station is reduced relative to the cell radius of the 4G base station, the 5G base station supporting only SA needs to be laid, and the new 5G base station alone forms an independent networking cell (SA cell).

[0027] Specifically, the current plan is that the LTE side base station and the NR side base station have the same coverage under the option3x architecture. Referring to Figure 1 , the LTE side base station eNB and the NR side base station gNB form an NSA network. The NR side base station gNB establishes a neighbor relationship with the coverage of the LTE side base station eNB within its coverage. In this way, the cell 1 has the NSA networking capability. In addition, there is a cell 2 that does not support NSA networking adjacent to the cell 1 formed by the LTE side base station eNB and the NR side base station gNB. The cell 2 supports NS networking but does not support NSA networking. In the prior art, the mixed-mode terminal will measure the signal strengths of the NSA networking cell 1 and the SA networking cell 2, and select the cell with stronger signal strength to access. In this way, the following situation may occur: since the signal strength of the SA networking cell 1 is stronger, the mobile terminal will access the SA networking cell 2 (i.e. the anchor cell), instead of accessing the NSA networking cell 1; but since the mixed-mode terminal migrates from the NSA networking cell 1 to the anchor cell of the SA networking, it needs to enable the inter-system handover process and consume the corresponding signaling overhead, which reduces the user experience of other mobile terminals supporting NSA in the NSA networking cell 1.

[0028] Therefore, user mobility will lead to more frequent handovers of hybrid terminals (e.g., handovers between different 5G base stations within an NSA cell, and handovers between NSA and SA cells). In this situation, user mobility management becomes more complex than before. In some scenarios, the inability of hybrid terminals to successfully hand over to the appropriate base station for data transmission and reception may make it difficult to guarantee network service quality.

[0029] Based on this, in various embodiments of this application, a method is provided to enable the migration of a hybrid terminal from NSA dual-connectivity state to SA NR neighbor cell in a scenario of SA and NSA hybrid networking, which is completed by the LTE / NR side working together, while ensuring the peak traffic of terminal users and with the lowest possible signaling overhead.

[0030] Example I

[0031] This embodiment provides a migration method under hybrid networking, applied to NR-side base stations in Non-Standalone (NSA) networks, such as... Figure 2 As shown, the method includes:

[0032] Step 101: Send co-channel interference measurement to the mixed-mode terminal;

[0033] Here, refer to Figure 3 The data flow diagram is shown below. In this embodiment, cell 1 supports NSA attributes, while cell 2 supports SA attributes. Cell 1 has one LTE-side base station (eNB) and one NR-side base station (gNB). Cell 2 also has one NR-side base station (gNB). After the hybrid terminal achieves dual connectivity in this NSA cell, it can be uniformly connected via the NR-side base station (i.e., Figure 3 The gNB base station (a 5G base station supporting NSA) sends co-channel interference measurements to the hybrid terminal according to the configured co-channel interference measurement parameters. Correspondingly, the LTE-side base station in the NSA cell no longer sends co-channel interference measurements to the hybrid terminal. The hybrid terminal can search for co-channel NR neighboring cells near its location and report the measurement information of these NR neighboring cells back to the NR-side base station. The hybrid terminal supports both NSA and SA access. In this case, since the LTE-side base station avoids directly sending inter-system measurements to the hybrid terminal, the peak traffic of the hybrid terminal can be maintained throughout the handover process.

[0034] Step 102: Based on the NR neighbor cell measurement information reported by the hybrid terminal, determine whether the corresponding NR neighbor cell supports NSA access; and

[0035] Step 103: Send the determination result of whether the NR neighbor cell supports NSA access to the LTE side base station in the NSA.

[0036] In actual application, the NR side base station can independently configure the same frequency interference measurement related parameters. After receiving the NR neighbor cell measurement information reported by the mixed mode terminal, the NR side base station can determine whether the NR neighbor cell supports NSA access attribute based on the NR neighbor cell measurement information.

[0037] In actual application, referring to the schematic diagram shown in Figure 5 , the NR side base station is connected with the background, and the NR side base station configures the NR neighbor cell relationship and identifies whether the NR neighbor cell supports NSA attribute according to the NR neighbor cell measurement information reported by the mixed mode terminal.

[0038] Returning to the schematic diagram shown in Figure 4 , when the NR neighbor cell is determined not to support NSA access (i.e. the 5G base station gNB in cell 2 only supports SA access), the mixed mode terminal cannot be attached to the NR cell through the SnChange process (NSA secondary cell change). Therefore, the NR side base station in cell 1 can notify the LTE side base station (e.g. the base station eNB shown in Figure 4 ) in the same cell that the NR neighbor cell does not support NSA access. Conversely, when the NR neighbor cell is determined to support NSA access (i.e. the 5G base station gNB in cell 2 supports NSA access), then the mixed mode terminal can be attached to the NR cell by triggering the SnChange process. The triggering of the SnChange process belongs to the standard process specified by the protocol. Specifically, the NR side base station notifies the LTE side base station in the NSA cell of the NR neighbor cell supporting dual connectivity through the SgNBChangeRequired source obtained by measurement, so as to trigger the LTE side base station to perform the leg switching operation (change the attached NR secondary cell), i.e. the SnChange process.

[0039] In actual application, the NR side base station in cell 1 can send the determination result (e.g. the NR neighbor cell not supporting NSA access) to the LTE side base station in cell 1 through the newly added X2 signaling SN Status Transfer message. Alternatively, the NR side base station in cell 1 can also send the determination result to the LTE side base station in cell 1 through the multiplexing secondary node switching request message. At this time, when the mixed mode terminal migrates into a cell that does not support NSA, the LTE station eNB1 initiates the SN leg breaking and inter-system switching process. Conversely, when the mixed mode terminal migrates into a cell that supports NSA, it can be attached through the NSA secondary cell change. It can be seen that the above process reuses part of the NSA secondary cell change process, thereby reducing the signaling overhead compared with the original inter-system switching process.

[0040] Embodiment II

[0041] This embodiment provides a migration method under hybrid networking, applied to NR-side base stations in Non-Standalone (NSA) networks, such as... Figure 2 As shown, the method includes:

[0042] Step 101: Send co-channel interference measurement to the mixed-mode terminal;

[0043] Here, refer to Figure 4 The data flow diagram is shown. Unlike the application scenario in Example 1, in this example, cell 1 is an LTE cell. Cell 2 supports NSA attributes. Cell 3 only supports SA attributes (i.e., it does not support NSA access, thus it cannot be switched via the SnChange procedure, but it can still cause co-channel interference in adjacent cells with the same frequency and coverage). Cell 1 has one LTE-side base station (eNB). Cell 3 has one NR-side base station (gNB). After the hybrid terminal achieves dual connectivity in a cell supporting NSA attributes, it can be uniformly controlled by the NR-side base station (i.e., Figure 4 The gNB base station (a 5G base station supporting NSA) sends co-channel interference measurements to the hybrid terminal according to the configured co-channel interference measurement parameters. Correspondingly, the LTE-side base station no longer sends co-channel interference measurements to the hybrid terminal repeatedly. The hybrid terminal can search for co-channel NR neighboring cells near its location and report the measurement information of these NR neighboring cells back to the NR-side base station. The hybrid terminal supports both NSA and SA access. In this case, since the LTE-side base station avoids directly sending inter-system measurements to the hybrid terminal, the peak traffic of the hybrid terminal can be maintained throughout the handover process.

[0044] Step 102: Based on the NR neighbor cell measurement information reported by the hybrid terminal, determine whether the corresponding NR neighbor cell supports NSA access; and

[0045] Step 103: Send the determination result of whether the NR neighbor cell supports NSA access to the LTE side base station in the NSA.

[0046] In practical applications, the NR-side base station can independently configure parameters related to co-channel interference measurement. After receiving NR neighbor cell measurement information reported by the hybrid terminal, the NR-side base station can determine whether the terminal supports NSA access based on this NR neighbor cell measurement information.

[0047] In practical applications, refer to Figure 5 The diagram shows that the NR-side base station is connected to the backend, configures the NR neighbor cell relationship based on the NR neighbor cell measurement information reported by the hybrid terminal, and identifies whether the NR neighbor cell supports NSA attributes.

[0048] Return to Figure 4The diagram illustrates that when an NR neighbor cell is determined to not support NSA access (e.g., cell 1), the hybrid terminal cannot attach to the NR cell via the SnChange procedure (NSA change of secondary cell). Therefore, the NR-side base station in cell 1 can notify the LTE-side base station in the same cell of the NR neighbor cell that does not support NSA access (e.g., ...). Figure 4 The base station (eNB) shown in the diagram. Conversely, when an NR neighbor cell is determined to support NSA access (for example, cell 2 is determined to support NSA access), the hybrid terminal can attach to that NR cell by triggering the SnChange procedure. Triggering the SnChange procedure is a standard procedure defined by the protocol. Specifically, the NR base station notifies the LTE base station in the NSA cell of the measured NR neighbor cells that support dual connectivity via the SgNBChangeRequired source, thereby triggering the LTE base station to perform a leg-switching operation (changing the attached NR secondary cell), i.e., the SnChange procedure.

[0049] In practical applications, the NR base station in cell 3 can send the determination result (e.g., NR neighboring cells that do not support NSA access) to the LTE base station in cell 1 via a newly added X2 signaling SN Status Transfer message. Alternatively, the NR base station in cell 3 can also send the determination result to the LTE base station in cell 1 via a reused secondary node handover request message. In this case, when the mixed-mode terminal wants to migrate to a cell that does not support NSA, the LTE site eNB1 initiates the SN disconnection and inter-system handover procedure. Conversely, when the mixed-mode terminal wants to migrate to a cell that supports NSA, it can attach via NSA secondary cell change. Therefore, the above process reuses part of the NSA secondary cell change procedure, thus reducing signaling overhead compared to the original inter-system handover procedure.

[0050] Example III

[0051] This embodiment provides a migration method under hybrid networking, applied to LTE-side base stations in Non-Standalone (NSA) networks, such as... Figure 6 As shown, the method includes:

[0052] Step 201: Receive the list of NR neighbor cells that support NSA access sent by the NR-side base station in the NSA;

[0053] Here, refer to Figure 7As shown in the data flow diagram, in the cell 1 supporting NSA access, the LTE side base station (i.e., the base station eNB in the figure, which is a 4G base station or an enhanced 4G base station) receives the above message sent by the NR side base station (i.e., the base station gNB in the figure, which is a 5G base station), thereby triggering the handover decision of the mixed-mode terminal from NSA to SANR adjacent area. Wherein, the mixed-mode terminal can search for the same frequency NR adjacent area near its location, and report the measurement information of the NR adjacent area back to the NR side base station. The NR side base station forms a list of NR adjacent areas supporting NSA access based on the measurement information of the NR adjacent area. At this time, since the LTE side base station will not directly issue inter-system measurement to the mixed-mode terminal, the peak traffic of the mixed-mode terminal itself can be maintained throughout the handover process.

[0054] Step 202: detecting the signal condition of each NR adjacent area in the list of NR adjacent areas, and comparing with the handover condition;

[0055] In actual application, the LTE side base station can detect the signal quality, available state, load state and adjacent relationship of each NR adjacent area in the list of NR adjacent areas. Exemplarily, the signal condition can be represented by one of the signal strength RSRP (Reference Signal Receiving Power), reference signal receiving quality RSRQ (Reference Signal Receiving Quality), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio) or a combination of the above signal condition parameters.

[0056] Step 203: after meeting the handover condition, triggering the mixed-mode terminal to disconnect the current connection to migrate to the corresponding NR adjacent area.

[0057] Wherein, the mixed-mode terminal supports NSA / SA access. In actual application, when the LTE side base station determines that the handover condition is met based on the signal quality, available state, load state and adjacent relationship of the NR adjacent area, but the NR cell does not support NSA access, the LTE side base station starts to trigger the mixed-mode terminal to disconnect the dual connection, and initiates the SN break leg and inter-system handover process (i.e., handover from the base station eNB in the current cell to the base station gNB in another cell), thereby completing the migration of the mixed-mode terminal from the cell 1 supporting NSA to the cell 2 supporting SA. Conversely, when the LTE side base station determines that the handover condition is met based on the signal quality, available state, load state and adjacent relationship of the NR adjacent area, and the NR cell does not support NSA access, the LTE side base station can trigger the mixed-mode terminal to attach to the NR cell with better signal quality through NSA secondary cell change.

[0058] In actual application, referring to the schematic diagram shown in Figure 8 , the LTE-side base station can be connected with a background, and configure the NR-neighbor cell relationship according to the NR-neighbor cell list supporting NSA access sent by the NR-side base station in the NSA, and identify whether the NR-neighbor cell supports NSA attribute.

[0059] Returning to the schematic diagram shown in Figure 7 , when the NR-neighbor cell is judged as not supporting NSA access (i.e. the 5G base station gNB in the cell 2 only supports SA access), the mixed-mode terminal cannot attach to the NR cell through the SnChange process (NSA secondary cell change). Therefore, the NR-side base station in the cell 1 can notify the LTE-side base station in the same cell (e.g. the base station eNB shown in Figure 7 ) of the NR-neighbor cell not supporting NSA access. On the contrary, when the NR-neighbor cell is judged as supporting NSA access (i.e. the 5G base station gNB in the cell 2 supports NSA access), then the mixed-mode terminal can attach to the NR cell by triggering the SnChange process. The triggering of the SnChange process belongs to the standard process specified by the protocol. Specifically, the LTE-side base station receives the notification of the NR-neighbor cell supporting dual connectivity from the NR-side base station in the NSA through the SgNBChangeRequired source by measurement. The LTE-side base station thus triggers the leg switching operation (change of the attached NR secondary cell), i.e. the SnChange process.

[0060] In actual application, the LTE-side base station in the cell 1 can obtain the judgment result (e.g. the NR-neighbor cell not supporting NSA access) from the NR-side base station in the cell through the newly added X2 signaling SN Status Transfer message. Alternatively, the LTE-side base station in the cell 1 can also obtain the judgment result from the NR-side base station in the cell 1 through the multiplexed secondary node switching request message. At this time, the above process multiplexes part of the NSA secondary cell change process, thereby reducing the signaling overhead relative to the original inter-system switching process.

[0061] Embodiment IV

[0062] This embodiment provides a migration method under hybrid networking, applied to a mixed-mode terminal in non-standalone networking (NSA). The mixed-mode terminal supports NSA / SA access. As shown in Figure 9 , the method comprises:

[0063] Step 301: connecting to the NR-side base station in the NSA to receive the intra-frequency interference measurement issued by the NR-side base station;

[0064] Here, referring to the schematic diagram shown in Figure 4The data flow chart shown, the mixed mode terminal can be in the NSA cell after the implementation of dual connectivity, receiving the NR side base station (i.e. Figure 4 The gNB base station in the cell, which is a 5G base station supporting NSA) to issue the same frequency interference measurement to it. Wherein, the NR side base station can independently configure the same frequency interference measurement related parameters. At this time, the mixed mode terminal can search for the same frequency NR neighbor area near its location, and report the measurement information of the NR neighbor area back to the NR side base station. After receiving the mixed mode terminal reported NR neighbor area measurement information, the NR side base station can judge whether it supports NSA access attribute based on the NR neighbor area measurement information. In this process, since the LTE side base station directly issues the inter-system measurement to the mixed mode terminal is avoided, the peak flow of the mixed mode terminal itself can be maintained throughout the switching process.

[0065] Step 302: search for the NR neighbor area of the current location, and report the measurement information of the NR neighbor area meeting the threshold condition to the NR side base station;

[0066] Wherein, the threshold condition can be the signal quality, available state, load state and adjacent relationship of the NR neighbor area. Specifically, the threshold condition for judging whether to report the measurement information can be configured on the base station side and then issued to the mixed mode terminal, so that the mixed mode terminal can determine whether to report the measurement information according to the threshold condition. When the mixed mode terminal measures the neighbor area signal, if the signal quality meets the threshold condition, the measurement information will be reported to the NR side base station. After receiving the measurement information reported by the mixed mode terminal, the NR side base station judges according to the measurement information. The measurement information can contain the neighbor area signal quality measured by the terminal, or the available state, adjacent relationship of the neighbor area configured on the base station side, and the load state of the neighbor area obtained and detected by the base station.

[0067] Step 303: migrate to the corresponding NR neighbor area in response to the switching instruction sent by the LTE side base station in the NSA.

[0068] Here, refer to Figure 7As shown in the data flow diagram, in the cell 1 supporting NSA access, the LTE side base station (i.e., the base station eNB in the figure, which is a 4G base station or an enhanced 4G base station) receives the above message sent by the NR side base station (i.e., the base station gNB in the figure, which is a 5G base station), thereby triggering the mixed-mode terminal to make a handover decision from NSA to SA NR neighboring cell. Wherein, the mixed-mode terminal can search for a same-frequency NR neighboring cell near its location, and report the measurement information of the NR neighboring cell back to the NR side base station. The NR side base station forms a list of NR neighboring cells supporting NSA access based on the measurement information of the NR neighboring cell. At this time, since the LTE side base station will not directly issue inter-system measurement to the mixed-mode terminal, the peak traffic of the mixed-mode terminal itself can be maintained throughout the handover process.

[0069] In actual application, referring to the schematic diagram shown in Figure 5 , the NR side base station is connected with a background, and the NR neighboring cell relationship is configured according to the NR neighboring cell measurement information reported by the mixed-mode terminal, and whether the NR neighboring cell supports NSA attribute is identified. Alternatively, referring to the schematic diagram shown in Figure 8 , the LTE side base station can also be connected with the background, and the NR neighboring cell relationship is configured according to the list of NR neighboring cells supporting NSA access sent by the NR side base station in the NSA, and whether the NR neighboring cell supports NSA attribute is identified.

[0070] In actual application, when the LTE side base station judges that the handover condition is met based on the signal quality, available state, load state and neighboring relationship of the NR neighboring cell, but does not support NSA access, the LTE side base station starts to trigger the mixed-mode terminal to disconnect the dual connectivity, and initiates the SN disconnected leg and inter-system handover process (i.e., handover from the base station eNB in the current cell to the base station gNB in another cell), thereby completing the migration of the mixed-mode terminal from the cell supporting NSA to the cell supporting SA. On the contrary, when the LTE side base station judges that the handover condition is met based on the signal quality, available state, load state and neighboring relationship of the NR neighboring cell, and supports NSA access, the LTE side base station triggers the mixed-mode terminal to attach to the cell with better signal quality than the current cell by the way of NSA secondary cell change. As can be seen, the above process reuses part of the NSA secondary cell change process, thereby reducing the signaling overhead compared with the original inter-system handover process.

[0071] Returning to the schematic diagram shown in Figure 7 , when the NR neighboring cell is judged as not supporting NSA access (i.e., the 5G base station gNB in the cell 2 only supports SA access), the mixed-mode terminal cannot attach to the NR cell by the way of NSA secondary cell change. Therefore, the NR side base station in the cell 1 can notify the LTE side base station of the NR neighboring cell not supporting NSA access (for example, Figure 7The base station 10 shown in the figure. The base station 10 comprises a memory 12, a processor 11 and a computer program stored in the memory 12 and executable on the processor 11. When the base station 10 is an NR-side base station, the computer program is used to execute the migration method under hybrid networking of the method steps 101 to 103 shown above when running. When the base station 10 is an LTE-side base station, the computer program is used to execute the migration method under hybrid networking of the method steps 201 to 203 shown above when running.

[0072] In actual application, the LTE-side base station in cell 1 can obtain the determination result (for example, the NR neighbor cell not supporting NSA access) from the NR-side base station of the cell through the newly added X2 signaling SN Status Transfer message. Alternatively, the LTE-side base station in cell 1 can also obtain the determination result from the NR-side base station in cell 1 by multiplexing the secondary node switching request message.

[0073] Figure 10 The base station 10 provided by the embodiments of the present application is shown. The base station 10 comprises a memory 12, a processor 11 and a computer program stored in the memory 12 and executable on the processor 11. When the base station 10 is an NR-side base station, the computer program is used to execute the migration method under hybrid networking of the method steps 101 to 103 shown above when running. When the base station 10 is an LTE-side base station, the computer program is used to execute the migration method under hybrid networking of the method steps 201 to 203 shown above when running.

[0074] The processor 11 and the memory 12 can be connected by a bus or other means.

[0075] The memory 12 as a kind of non-transient computer readable storage medium can be used to store non-transient software programs and non-transient computer executable programs, such as the cell switching method described in the embodiments of the present application. When the base station 10 is an NR-side base station, the processor 11 realizes the migration method under hybrid networking of the method steps 101 to 103 shown above by running the non-transient software programs and instructions stored in the memory 12. Figure 2 The migration method under hybrid networking of the method steps 101 to 103 shown above. When the base station 10 is an NR-side base station, the processor 11 realizes the migration method under hybrid networking of the method steps 101 to 103 shown above by running the non-transient software programs and instructions stored in the memory 12. Figure 2 The migration method under hybrid networking of the method steps 101 to 103 shown above. When the base station 10 is an LTE-side base station, the processor 11 realizes the migration method under hybrid networking of the method steps 201 to 203 shown above by running the non-transient software programs and instructions stored in the memory 12. Figure 6 The migration method under hybrid networking of the method steps 21 to 23 shown above. In actual application, the memory 12 can also store the attribute of whether each NR neighbor cell supports NSA.

[0076] The memory 12 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required by a function; and the data storage area can store the above-mentioned cell handover method. In addition, the memory 102 can include a high-speed random access memory 12, and can also include a non-transitory memory 12, such as at least one disk storage device, a flash memory device or other non-transitory solid-state memory device. In some embodiments, the memory 12 can optionally include a memory 12 remotely arranged relative to the processor 11, and these remote memories 12 can be connected to the base station 10 through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0077] The non-transitory software programs and instructions required to implement the above-mentioned migration method under hybrid networking are stored in the memory 12. When the base station 10 is an NR-side base station, the non-transitory software programs and instructions are executed by one or more processors 11 to implement the above-mentioned method steps 101 to 103 of the migration method under hybrid networking. When the base station 10 is an LTE-side base station, the non-transitory software programs and instructions are executed by one or more processors 11 to implement the above-mentioned method steps 201 to 203 of the migration method under hybrid networking.

[0078] Figure 11 A mobile terminal 20 provided by an embodiment of the present application is shown. The mobile terminal 20 includes a memory 22, a processor 21 and a computer program stored on the memory 22 and executable on the processor 21, and the computer program is used to implement the above-mentioned method steps 301 to 303 of the migration method under hybrid networking when running.

[0079] The processor 21 and the memory 22 can be connected through a bus or other means.

[0080] An embodiment of the present application further provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are used to execute the above-mentioned migration method under hybrid networking.

[0081] In the embodiments of the present application, the computer readable storage medium stores computer executable instructions executed by one or more control processors. For example, when the base station 10 is an NR side base station, the computer executable instructions are executed by one processor 11 in the base station 10, so that the one or more processors 11 execute the migration handover method under hybrid networking of the above method steps 101 to 103. Or, when the base station 10 is an LTE side base station, the computer executable instructions are executed by one processor 11 in the base station 10, so that the one or more processors 11 execute the migration handover method under hybrid networking of the above method steps 201 to 203. Or, the computer executable instructions are executed by one processor 21 in the mobile terminal 20, so that the one or more processors 201 execute the migration method under hybrid networking of the above method steps 301 to 303.

[0082] The above described embodiments are merely illustrative, wherein the units described as separate components can or can not be physically separate, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments.

[0083] In the embodiments herein, the mixed mode terminal can refer to a terminal device accessing a mobile network, such as a handheld device with wireless communication function, including a mobile phone, a tablet, a notebook computer, a terminal with a sim card or using e-sim technology, a computing device, a multimedia device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, etc. The base station is an interface device for mobile terminals to realize calls and access to the Internet, which can include but is not limited to macro base stations, micro base stations, indoor distributed base stations, etc.

[0084] As will be appreciated by one of ordinary skill in the art, all or some steps, systems of the above-disclosed methods can be implemented as software, firmware, hardware, or any suitable combination thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application- specific integrated circuit. Such software can be distributed on computer readable media, which can comprise computer storage media (or non-transitory media), and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage media includes both volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media include, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Further, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as carrier waves or other transport mechanisms, and includes any information delivery media.

[0085] Embodiments of the present application are described herein with reference to the drawings, including preferred embodiments currently known to the inventors to be of most commercial value. Variations on those described embodiments can become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the scope of the application to include all such modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by pertinent law. Moreover, further embodiments of the present application can include any of the above-described elements in any of the above-described combinations. Accordingly, the scope of the present application is not intended to be limited to the above-described embodiments but rather is intended to be limited only by the following claims, appropriately interpreted, along with the full breadth of equivalents to which such claims are entitled.

Claims

1. A method for migration in a hybrid network, applied to a LTE side base station in a non-standalone network (NSA), comprising the steps of: receiving a NR neighbor cell list supporting NSA access sent by a NR side base station in the NSA, wherein the NR side base station is configured to uniformly issue a same frequency interference measurement to a mixed mode terminal and determine whether a corresponding NR neighbor cell supports NSA access based on NR neighbor cell measurement information reported by the mixed mode terminal; detecting a signal condition of each NR neighbor cell in the NR neighbor cell list and comparing with a handover condition; and after the handover condition is met, triggering the mixed mode terminal to disconnect a current connection and migrate to a corresponding NR neighbor cell based on the NR neighbor cell list supporting NSA access; wherein the same frequency interference measurement is determined based on same frequency interference measurement parameters configured independently by the NR side base station.

2. The migration method of claim 1, wherein, The LTE side base station is connected to a background to configure NR neighbor cell relations and identify attributes of whether each NR neighbor cell supports NSA.

3. The migration method of claim 1, wherein, The signal condition comprises at least one of a signal quality, an available state, a load state and a neighboring relation.

4. The migration method of claim 1, wherein, The mixed mode terminal is connected to the NSA in a dual connectivity manner.

5. The migration method of claim 1, wherein, The mixed mode terminal is triggered to disconnect the current connection and migrate to the corresponding NR neighbor cell through an inter-system handover procedure.

6. The migration method according to any one of claims 1 to 5, characterized in that, The determination result is received from the NR side base station in the NSA through newly added X2 signaling.

7. The migration method according to any one of claims 1 to 5, wherein, The determination result is received from the NR side base station in the NSA through a multiplexed secondary node handover request message. 8.A method for migration in a hybrid network, applied to a NR side base station in a non-standalone network (NSA), comprising the steps of: uniformly issuing a same frequency interference measurement to a mixed mode terminal; determining whether a corresponding NR neighbor cell supports NSA access based on NR neighbor cell measurement information reported by the mixed mode terminal; and sending a determination result of whether the NR neighbor cell supports NSA access to a LTE side base station in the NSA, so that the LTE side base station triggers the mixed mode terminal to migrate to a corresponding NR neighbor cell based on the determination result in response to a signal condition of the corresponding NR neighbor cell meeting a handover condition; wherein the same frequency interference measurement is determined based on same frequency interference measurement parameters configured independently by the NR side base station.

9. The migration method of claim 8, wherein, The NR side base station is connected to a background to configure NR neighbor cell relations and identify attributes of whether each NR neighbor cell supports NSA.

10. The migration method of claim 8, wherein, The mixed mode terminal performs the same frequency interference measurement based on the same frequency interference measurement parameters configured independently by the NR side base station.

11. The migration method of claim 8, wherein, The mixed mode terminal is connected to the NSA in a dual connectivity manner.

12. The migration method according to any one of claims 8 to 11, characterized in that, The determination result is sent to the LTE side base station in the NSA through newly added X2 signaling.

13. The migration method according to any one of claims 8 to 11, characterized by, The determination result is sent to the LTE side base station in the NSA through a multiplexed secondary node handover request message. 14.A method for migration in a hybrid network, applied to a mixed mode terminal in a dual connectivity to a non-standalone network (NSA), comprising the steps of: connecting to a NR side base station in the NSA to receive a same frequency interference measurement uniformly issued by the NR side base station; searching for NR neighbor cells of a current location, and reporting measurement information of the NR neighbor cells satisfying a threshold condition to the NR-side base station, wherein the NR-side base station is configured to send a determination result of whether the NR neighbor cells support NSA access to the LTE-side base station in the NSA based on the measurement information; and migrating to a corresponding NR neighbor cell in response to a handover instruction sent by the LTE-side base station in the NSA; wherein the co-channel interference measurement is determined based on the NR-side base station independently configuring co-channel interference measurement parameters.

15. The migration method of claim 14, wherein, The co-channel interference measurement is determined based on the NR-side base station independently configuring co-channel interference measurement parameters.

16. The migration method of claim 14, wherein, The mixed-mode terminal is connected to the NSA in a dual connectivity manner.

17. The migration method of claim 14, wherein, When an NR neighbor cell with signal quality better than a current NR cell is searched, the signal quality of the NR neighbor cell is compared with the threshold condition.

18. A storage medium, comprising a stored program, wherein, The program performs the migration method of any one of claims 1 to 17 when executed.

19. A base station comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein, The processor performs the migration method of any one of claims 1 to 13 by the computer program.

20. A mobile mode mixing terminal comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein, The processor performs the migration method of any one of claims 14 to 17 by the computer program.

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