Base station switching method and apparatus, computer readable storage medium

Abstract

This application discloses a base station handover method and apparatus, and a computer-readable storage medium, comprising: receiving a handover request sent by a source base station, the handover request carrying handover type information of the source base station to a destination base station, and location information of the source base station and the destination base station; determining the Serving Gateway (SGW) interface address type corresponding to the handover from the source base station to the destination base station according to the handover request; sending a forward relocation request to a mobility management network element at the destination, the forward relocation request carrying the SGW interface address type; receiving the interface address of the destination SGW corresponding to the destination base station returned by the mobility management network element at the destination in response to the forward relocation request, the interface address of the destination SGW being the SGW interface address type; and performing a handover from the source base station to the destination base station according to the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW.

Description

Technical Field

[0001] This application relates to the field of mobile communication technology, and in particular to a base station handover method and apparatus, and a computer-readable storage medium. Background Technology

[0002] Base station handover requires the use of SGW interface addresses to establish indirect data forwarding channels. When the source base station and the destination base station are not interconnected, the different implementation mechanisms of SGW interface specifications from different manufacturers can lead to routing failures between the two SGWs, resulting in the loss of indirect data and affecting the user experience. Summary of the Invention

[0003] The purpose of this application is to provide a base station handover method and apparatus, and a computer-readable storage medium, to solve the data loss problem caused by the failure of existing base station handover routes.

[0004] To solve the above-mentioned technical problems, this specification is implemented as follows:

[0005] Firstly, a base station handover method is provided, applied to a mobility management network element at the source end, the method comprising:

[0006] The system receives a handover request sent by a source base station, the handover request carrying handover type information of the source base station to the destination base station, and location information of the source base station and the destination base station;

[0007] Based on the handover request, determine the Serving Gateway (SGW) interface address type corresponding to the handover from the source base station to the destination base station;

[0008] A forward relocation request is sent to the mobility management network element at the destination, the forward relocation request carrying the SGW interface address type;

[0009] The interface address of the destination SGW corresponding to the destination base station is returned by the mobility management network element of the destination terminal in response to the forward relocation request, and the interface address of the destination SGW is of the SGW interface address type.

[0010] Based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, the handover from the source base station to the destination base station is performed.

[0011] Optionally, based on the handover request, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station includes:

[0012] If the handover from the source base station to the destination base station is determined to be a base station handover within a 4G network based on the handover type information, then the location information is obtained;

[0013] If the location information determines that the base station handover corresponds to a base station handover within the same mobility management network element, then the SGW interface address type is determined to be an SGW interface address facing the base station side.

[0014] Optionally, based on the handover request, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station includes:

[0015] If the handover from the source base station to the destination base station is determined to be a base station handover within a 4G network based on the handover type information, then the location information is obtained;

[0016] If the location information determines that the base station handover corresponds to a base station handover between different mobility management network elements, then the SGW interface address type is determined to be an SGW interface address facing the core network equipment side.

[0017] Optionally, based on the handover request, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station includes:

[0018] If the handover from the source base station to the destination base station is determined to be a base station handover between a 4G network and a 5G network based on the handover type information, then the SGW interface address type is determined to be an SGW interface address facing the core network equipment side.

[0019] Optionally, based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, a handover from the source base station to the destination base station is performed, including:

[0020] Send an indirect forwarding channel establishment request to the source SGW corresponding to the source base station, wherein the indirect forwarding channel establishment request carries the SGW interface address type;

[0021] Receive the interface address of the source SGW returned by the source SGW in response to the data forwarding channel establishment request, wherein the interface address of the source SGW is of the SGW interface address type;

[0022] An indirect forwarding channel is established with the mobility management network element at the destination based on the interface address of the source SGW and the interface address of the destination SGW.

[0023] Data during the handover process from the source base station to the destination base station is transmitted through the indirect forwarding channel.

[0024] Optionally, the mobility management network element includes a mobility management entity (MME) or an access and mobility management function (AMF).

[0025] Secondly, a base station handover method is provided, applied to a mobility management network element at the destination, the method comprising:

[0026] The system receives a forward relocation request sent by a mobility management network element at the source end, wherein the forward relocation request carries the SGW interface address type for the source base station to switch to the destination base station.

[0027] Based on the SGW interface address type, obtain the interface address of the destination SGW corresponding to the destination base station;

[0028] In response to the forward relocation request, the interface address of the destination SGW is sent to the mobility management network element at the source end.

[0029] Optionally, based on the SGW interface address type, the interface address of the destination SGW corresponding to the destination base station is obtained, including:

[0030] Send an indirect forwarding channel establishment request to the destination SGW corresponding to the destination base station, wherein the indirect forwarding channel establishment request carries the SGW interface address type;

[0031] The interface address of the destination SGW returned in response to the data forwarding channel establishment request is received, and the interface address of the destination SGW is of the SGW interface address type.

[0032] Thirdly, a base station switching apparatus is provided, including a memory and a processor electrically connected to the memory, the memory storing a computer program executable by the processor, the computer program, when executed by the processor, implementing the steps of the method described in the first or second aspect.

[0033] Fourthly, a computer-readable storage medium is provided that stores a computer program thereon, which, when executed by a processor, implements the steps of the method described in the first or second aspect.

[0034] In this embodiment, a handover request is received from a source base station, the request carrying handover type information from the source base station to the destination base station, and location information of the source and destination base stations. Based on the handover request, the Serving Gateway (SGW) interface address type corresponding to the handover from the source base station to the destination base station is determined. A forward relocation request is sent to the mobility management network element at the destination, the forward relocation request carrying the SGW interface address type. The interface address of the destination SGW corresponding to the destination base station, returned by the mobility management network element at the destination in response to the forward relocation request, is received; the interface address of the destination SGW is the SGW interface address type. Based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, a handover from the source base station to the destination base station is executed. This determines the required SGW interface address type for base station handover according to the actual network scenario, flexibly selecting different types of SGW interface addresses according to different handover scenarios. This achieves negotiation and unification of the SGW interface address types for the source and destination ends under different network scenarios, avoiding data loss caused by differences in implementation mechanisms of different manufacturers during handover, and improving network flexibility and user experience. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0036] Figure 1 This is a schematic flowchart of the base station handover method according to the first embodiment of this application.

[0037] Figure 2 This is an example flowchart of the base station handover method for the mobility management network element corresponding to the embodiments of this application.

[0038] Figure 3 This is a schematic flowchart of the base station handover method according to the second embodiment of this application.

[0039] Figure 4 This is an example flowchart of the base station handover method at the SGW end corresponding to the embodiments of this application.

[0040] Figure 5 This is a structural block diagram of a base station handover device according to an embodiment of this application. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The drawing numbers in this application are only used to distinguish the various steps in the solution and are not used to limit the execution order of the steps. The specific execution order is subject to the description in the specification.

[0042] To address the problems existing in the prior art, embodiments of this application provide a base station handover method, apparatus, and computer-readable storage medium.

[0043] refer to Figure 1 , Figure 1 This is a schematic flowchart of the base station handover method according to the first embodiment of this application. In this embodiment, the base station handover method is applied to the mobility management network element at the source end.

[0044] like Figure 1 As shown, the method includes the following steps:

[0045] Step 102: Receive a handover request sent by the source base station. The handover request carries handover type information of the source base station handover to the destination base station, and location information of the source base station and the destination base station.

[0046] Step 104: Based on the handover request, determine the Serving Gateway (SGW) interface address type corresponding to the handover from the source base station to the destination base station;

[0047] Step 106: Send a forward relocation request to the mobility management network element at the destination, wherein the forward relocation request carries the SGW interface address type;

[0048] Step 108: Receive the interface address of the destination SGW corresponding to the destination base station returned by the mobility management network element of the destination terminal in response to the forward relocation request, wherein the interface address of the destination SGW is of the SGW interface address type;

[0049] Step 110: Based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, perform a handover from the source base station to the destination base station.

[0050] The mobility management network element at the source end is the mobility management network element corresponding to the source base station that requests the base station handover.

[0051] The base station handover method of this application embodiment can be applied within the same network system, such as base station handover within a 4G network. It can also be applied between different network systems, such as base station handover between a 4G network and a 5G network, including handover from a source base station in a 4G network to a destination base station in a 5G network, or handover from a source base station in a 5G network to a destination base station in a 4G network.

[0052] Optionally, mobility management network elements include a Mobility Management Entity (MME) or an Access and Mobility Management Function (AMF).

[0053] In base station handover scenarios within a 4G network, both the source and destination mobility management network elements (MMEs) are core network equipment. In base station handover scenarios between 4G and 5G networks, if the source MME is a 4G core network equipment, then the destination AMF is a 5G core network equipment; conversely, if the source AMF is an AMF, then the destination MME is a 5G core network equipment.

[0054] In step 102, the base station handover type information carried in the handover request indicates whether it is a base station handover within the 4G network or a handover between 4G and 5G networks. If it is a handover within the 4G network, the base station location information can be used to determine whether the destination base station and the source base station are in the same location, thereby determining whether the base station handover corresponds to a handover within the same mobility management network element or a handover between different mobility management network elements, that is, whether the mobility management network element corresponding to the source base station and the mobility management network element corresponding to the destination base station are the same. The base station handover type information can be set in the corresponding field in the handover request, and the corresponding base station handover type can be determined through the content of this field.

[0055] In step 104, the SGW interface address type includes SGW interface addresses facing the base station side, i.e., access side interface addresses, such as S1U addresses; and SGW interface addresses facing the core network equipment side, i.e., core side interface addresses, such as S5 / S8 addresses.

[0056] The base station handover type can be implemented by adding flags to the signaling. For example, when the flag value is 1, it indicates that the SGW interface address type is an SGW interface address facing the core network equipment side, that is, using the S5 / S8 address to establish an indirect forwarding channel for base station handover, where S8 represents the interface address during roaming. When the flag value is 0, it indicates that the SGW interface address type is an SGW interface address facing the base station side, that is, using the S1U address to establish an indirect forwarding channel for base station handover.

[0057] In one embodiment, the flag is carried by adding a new cell. Alternatively, the flag can be carried using cells from existing specifications, such as defining a spare bit in Octets as a flag bit to indicate the SGW interface address type. This allows for a smooth expansion on top of the existing network architecture, reducing the cost of network upgrades.

[0058] Based on the solution provided in the above embodiments, optionally, in step 104 above, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station according to the handover request includes: if the handover from the source base station to the destination base station is determined to be a base station handover within a 4G network according to the handover type information, then the location information is obtained; if the base station handover corresponds to a base station handover within the same mobility management network element according to the location information, then the SGW interface address type is determined to be an SGW interface address facing the base station side.

[0059] In this embodiment, for scenarios where the handover type is a base station handover within a 4G network, it is necessary to further consider the location relationship between the source base station and the destination base station to determine whether the base station handover corresponds to a handover within the same mobility management network element. If so, the networks corresponding to the source base station and the destination base station are interconnected. In this case, to establish an indirect forwarding channel for base station handover, the SGW interface addresses corresponding to the source base station and the destination base station can use either the SGW interface address facing the base station side or the SGW interface address facing the core network equipment side.

[0060] Since the source base station and the destination base station are interconnected, the source base station and the destination base station can both use the SGW interface address facing the base station side, or both use the SGW interface address facing the core network equipment side, or one of the source base station and the destination base station can use the SGW interface address facing the base station side and the other can use the SGW interface address facing the core network equipment side.

[0061] However, SGW interface addresses facing the base station side, such as S1U, typically involve larger bandwidths, while SGW interface addresses facing the core network equipment side, such as S5 / S8, are usually designed with smaller bandwidths. Therefore, to avoid the risk of excessive bandwidth utilization in certain special scenarios, this application embodiment determines the SGW interface address type as the base station-facing SGW interface address for base station handover within a 4G network and corresponding to the same mobility management network element. This maximizes the adaptation to network bandwidth design and increases network flexibility.

[0062] Optionally, based on the handover request, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station includes: if the handover from the source base station to the destination base station is determined to be a base station handover within a 4G network based on the handover type information, then obtaining the location information; if the base station handover corresponds to a base station handover between different mobility management network elements based on the location information, then determining the SGW interface address type to be an SGW interface address facing the core network equipment side.

[0063] In this embodiment, for scenarios where the handover type is a base station handover within a 4G network, it is necessary to further consider the location relationship between the source base station and the destination base station to determine whether the base station handover corresponds to a handover within the same mobility management network element. If it is determined that the handover corresponds to a base station handover between different mobility management network elements, then the networks corresponding to the source base station and the destination base station may not be interconnected, for example, they may not be interconnected across provinces, and there may also be partial incompatibility between different cities within the same province.

[0064] If the source and destination base stations use different SGW interface address types when the networks are not interconnected, routing interoperability cannot be achieved. In this case, to establish an indirect forwarding channel for base station handover, the corresponding SGW interface address type is the SGW interface address facing the core network equipment side. That is, both the source and destination base stations use SGW interface addresses facing the core network equipment side. SGW interface addresses facing the core network equipment side, such as S5 / S8, are public network addresses, enabling SGW routing interoperability.

[0065] Therefore, by using the SGW interface address facing the core network equipment side, the loss of indirect data caused by the routing failure between the two base stations can be avoided, enabling smooth and seamless handover of base stations and improving the user experience.

[0066] Optionally, based on the handover request, the SGW interface address type corresponding to the handover from the source base station to the destination base station is determined, including: if the handover from the source base station to the destination base station is determined to be a base station handover between a 4G network and a 5G network based on the handover type information, then the SGW interface address type is determined to be an SGW interface address facing the core network equipment side.

[0067] In this embodiment, for base station handover scenarios between 4G and 5G networks, since the networks are not interconnected, it is directly determined that both SGWs use the SGW interface address facing the core network equipment side. By using the public network address on the core network equipment side, routing between the two SGWs can be achieved.

[0068] In step 106, the SGW interface address type carried in the forward relocation request sent by the source mobility management network element to the destination mobility management network element can also be represented by the value of the flag bit.

[0069] As mentioned above, the corresponding values ​​of the flag bits are as follows: when it is 1, it means that the indirect forwarding channel for base station handover is required to use the S5 / S8 address facing the core network equipment side; when it is 0, it means that the indirect forwarding channel for base station handover is required to use the S1U address facing the base station side.

[0070] Therefore, after receiving the forward relocation request, the mobility management network element at the destination end obtains the destination SGW interface address of the corresponding type of the destination base station according to whether the value of the flag bit in the request is 0 or 1. That is, the obtained interface address of the destination SGW is the type corresponding to the value of the flag bit.

[0071] In step 108, the interface address of the destination SGW returned by the mobility management network element at the destination end is carried in the signaling response to the forward relocation request.

[0072] Optionally, in step 110, the handover from the source base station to the destination base station is performed based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, including: sending an indirect forwarding channel establishment request to the source SGW corresponding to the source base station, wherein the indirect forwarding channel establishment request carries the SGW interface address type; receiving the interface address of the source SGW returned by the source SGW in response to the data forwarding channel establishment request, wherein the interface address of the source SGW is the SGW interface address type; establishing an indirect forwarding channel with the mobility management network element of the destination end based on the interface address of the source SGW and the interface address of the destination SGW; and transmitting data during the handover process from the source base station to the destination base station through the indirect forwarding channel.

[0073] This embodiment describes the signaling interaction between the source mobility management network element and the corresponding source base station and source SGW during the establishment of an indirect forwarding channel for base station handover. The SGW interface address type carried in the indirect forwarding channel establishment request can also be represented by the flag values ​​configured above.

[0074] Therefore, after the source SGW receives the indirect forwarding channel establishment request, it obtains the corresponding type of SGW interface address based on whether the value of the flag bit in the request is 0 or 1. That is, the obtained source SGW interface address is the type corresponding to the value of the flag bit.

[0075] The source mobility management network element interacts with the destination mobility management network element based on the interface addresses of the source SGW and the destination SGW, thereby establishing the indirect forwarding channel required for base station handover and realizing indirect data transmission. This step can be implemented using existing indirect forwarding channel methods, which will not be elaborated here.

[0076] To explain in detail the base station handover method corresponding to the mobility management network element at the source end provided in the embodiments of the present invention, a specific embodiment will be used as an example for description below. It will be understood that the steps in this embodiment are similar to... Figure 1 The steps described in the embodiments are the same or similar, and relevant descriptions are omitted appropriately to avoid repetition.

[0077] In this embodiment, the corresponding SGW interface address type is represented by carrying a flag bit value in the information cell of the corresponding interaction request. For example, a flag bit value of 1 indicates an SGW interface address facing the core network equipment side; a flag bit value of 0 indicates an SGW interface address facing the base station side.

[0078] like Figure 2 As shown, it includes the following steps:

[0079] Step 202: Receive a handover request, which carries information indicating the type of base station handover and the location information of the source and destination base stations;

[0080] Step 204: Determine whether it is a base station handover between 4G and 5G networks based on the base station handover type information. If yes, proceed to step 208; otherwise, proceed to step 206.

[0081] Step 206: Set the flag value in the forward relocation request sent to the mobility management network element at the destination to 1;

[0082] Step 208: Determine whether the handover is within the same mobility management element in the 4G network based on the location information of the source base station and the destination base station. If yes, proceed to step 212; otherwise, proceed to step 210.

[0083] Step 210: Set the flag value in the forward relocation request sent to the mobility management network element at the destination to 1;

[0084] Step 212: Set the flag value in the indirect forwarding channel establishment request sent to the source SGW to 0.

[0085] If it is a base station handover within a mobility management network element, the steps performed by the source mobility management network element and the destination mobility management network element are the same. If it is a 4G base station handover between mobility management network elements or a 4G and 5G base station handover, the mobility management network element establishes a request forwarding flag value to the SGW through the indirect forwarding channel.

[0086] In this embodiment, a handover request is received from a source base station, the request carrying handover type information from the source base station to the destination base station, and location information of the source and destination base stations. Based on the handover request, the Serving Gateway (SGW) interface address type corresponding to the handover from the source base station to the destination base station is determined. A forward relocation request is sent to the mobility management network element at the destination, the forward relocation request carrying the SGW interface address type. The interface address of the destination SGW corresponding to the destination base station, returned by the mobility management network element at the destination in response to the forward relocation request, is received; the interface address of the destination SGW is the SGW interface address type. Based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, a handover from the source base station to the destination base station is executed. This determines the required SGW interface address type for base station handover according to the actual network scenario, flexibly selecting different types of SGW interface addresses according to different handover scenarios. This achieves negotiation and unification of the SGW interface address types for the source and destination ends under different network scenarios, avoiding data loss caused by differences in implementation mechanisms of different manufacturers during handover, and improving network flexibility and user experience.

[0087] Furthermore, for base station handover within the same 4G network with interconnected routing, specifying the SGW interface address type for base station handover as an interface address facing the base station side better adapts to network bandwidth design and improves network bandwidth utilization efficiency and security.

[0088] refer to Figure 3 This application also provides a base station handover method. Figure 3 This is a schematic flowchart of a base station handover method according to a second embodiment of this application. In this embodiment, the base station handover method is applied to a mobility management network element at the destination.

[0089] like Figure 3 The method, as shown, includes the following steps:

[0090] Step 302: Receive a forward relocation request sent by the mobility management network element at the source end. The forward relocation request carries the SGW interface address type that the source base station switches to the destination base station.

[0091] Step 304: Obtain the interface address of the destination SGW corresponding to the destination base station according to the SGW interface address type;

[0092] Step 306: In response to the forward relocation request, send the interface address of the destination SGW to the mobility management network element at the source end.

[0093] Here, in the forward relocation request received by the mobility management network element at the destination, the value of the flag bit can indicate the SGW interface address type, specifically as described above. Figures 1 to 2 The descriptions of the embodiments are the same and will not be repeated here.

[0094] In step 304, optionally, obtaining the interface address of the destination SGW corresponding to the destination base station according to the SGW interface address type includes: sending an indirect forwarding channel establishment request to the destination SGW corresponding to the destination base station, wherein the indirect forwarding channel establishment request carries the SGW interface address type; and receiving the interface address of the destination SGW returned by the destination SGW in response to the data forwarding channel establishment request, wherein the interface address of the destination SGW is the SGW interface address type.

[0095] To illustrate the base station handover method corresponding to the SGW provided in this embodiment of the invention in detail, a specific embodiment will be described below. In this embodiment, the base station handover method involves the operation steps of the SGW at the destination end.

[0096] It is understandable that the steps in this embodiment are similar to... Figures 1 to 3 The steps described in the embodiments are the same or similar, and relevant descriptions are omitted appropriately to avoid repetition.

[0097] Similarly, in this embodiment, the corresponding SGW interface address type is represented by carrying flag bit values ​​in the information cell of the corresponding interaction request. For example, a flag bit value of 1 indicates an SGW interface address facing the core network equipment side; a flag bit value of 0 indicates an SGW interface address facing the base station side.

[0098] like Figure 4 As shown, it includes the following steps:

[0099] Step 402: Receive the indirect forwarding channel establishment request sent by the destination mobility management network element;

[0100] Step 404: Determine whether the value of the flag bit in the request is 1. If yes, proceed to step 406; otherwise, proceed to step 408.

[0101] Step 406: Return the SGW interface address facing the core network equipment side to the destination mobility management network element;

[0102] Step 408: Return the SGW interface address facing the base station to the destination mobility management network element.

[0103] The execution steps for the source SGW and the destination SGW are the same.

[0104] In this embodiment, a forward relocation request is received from a mobility management network element at the source end. The forward relocation request carries the SGW interface address type corresponding to the switching of the source base station to the destination base station. Based on the SGW interface address type, the interface address of the destination SGW corresponding to the destination base station is obtained. In response to the forward relocation request, the interface address of the destination SGW is sent to the mobility management network element at the source end. Thus, during the base station handover process, different types of SGW interface addresses are flexibly selected according to different handover scenarios. This achieves negotiation and unification of the SGW interface address types of the source and destination ends under different network scenarios, avoids data loss caused by differences in the implementation mechanisms of different manufacturers' specifications during the handover process, and improves network flexibility and user experience.

[0105] Optionally, embodiments of this application also provide a base station handover device. Figure 5 This is a structural block diagram of a base station handover device according to an embodiment of this application.

[0106] like Figure 5 As shown, the base station handover device 2000 includes a memory 2200 and a processor 2400 electrically connected to the memory 2200. The memory 2200 stores a computer program that can be run on the processor 2400. When the computer program is executed by the processor, it implements the various processes of any of the above-described base station handover method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0107] This application also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of any of the above-described base station handover method embodiments and achieves the same technical effect. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0108] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0109] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0110] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A base station handover method, characterized in that, The method, applied to a mobility management network element at the source end, includes: The system receives a handover request sent by a source base station. The handover request carries handover type information of the source base station to the destination base station, as well as the location information of the source base station and the destination base station. The handover type information is used to indicate whether it is a base station handover within a 4G network or a base station handover between 4G and 5G. Based on the handover request, the SGW interface address type corresponding to the handover from the source base station to the destination base station is determined, wherein the SGW interface address type includes an SGW interface address facing the base station side and an SGW interface address facing the core network equipment side. A forward relocation request is sent to the mobility management network element at the destination, the forward relocation request carrying the SGW interface address type; The interface address of the destination SGW corresponding to the destination base station is returned by the mobility management network element of the destination terminal in response to the forward relocation request, and the interface address of the destination SGW is of the SGW interface address type. Based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, the handover from the source base station to the destination base station is performed.

2. The method as described in claim 1, characterized in that, Based on the handover request, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station includes: If the handover from the source base station to the destination base station is determined to be a base station handover within a 4G network based on the handover type information, then the location information is obtained; If the location information determines that the base station handover corresponds to a base station handover within the same mobility management network element, then the SGW interface address type is determined to be an SGW interface address facing the base station side.

3. The method as described in claim 1, characterized in that, Based on the handover request, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station includes: If the handover from the source base station to the destination base station is determined to be a base station handover within a 4G network based on the handover type information, then the location information is obtained; If the location information determines that the base station handover corresponds to a base station handover between different mobility management network elements, then the SGW interface address type is determined to be an SGW interface address facing the core network equipment side.

4. The method as described in claim 1, characterized in that, Based on the handover request, determining the SGW interface address type corresponding to the handover from the source base station to the destination base station includes: If the handover from the source base station to the destination base station is determined to be a base station handover between a 4G network and a 5G network based on the handover type information, then the SGW interface address type is determined to be an SGW interface address facing the core network equipment side.

5. The method as described in claim 1, characterized in that, Based on the interface address of the source SGW corresponding to the source base station and the interface address of the destination SGW, a handover from the source base station to the destination base station is performed, including: Send an indirect forwarding channel establishment request to the source SGW corresponding to the source base station, wherein the indirect forwarding channel establishment request carries the SGW interface address type; Receive the interface address of the source SGW returned by the source SGW in response to the indirect forwarding channel establishment request, wherein the interface address of the source SGW is of the SGW interface address type; An indirect forwarding channel is established with the mobility management network element at the destination based on the interface address of the source SGW and the interface address of the destination SGW. Data during the handover process from the source base station to the destination base station is transmitted through the indirect forwarding channel.

6. The method according to any one of claims 1 to 5, characterized in that, The mobility management network element includes a mobility management entity (MME) or an access and mobility management function (AMF).

7. A base station handover method, characterized in that, The method, applied to a mobility management network element at the destination, includes: The system receives a forward relocation request sent by a mobility management network element at the source end. The forward relocation request carries the SGW interface address type corresponding to the handover from the source base station to the destination base station. The SGW interface address type includes an SGW interface address facing the base station side and an SGW interface address facing the core network equipment side. The SGW interface address type is determined based on the handover request sent by the source base station. The handover request carries handover type information of the handover from the source base station to the destination base station, as well as the location information of the source base station and the destination base station. The handover type information is used to indicate whether it is a base station handover within the 4G network or a base station handover between 4G and 5G. Based on the SGW interface address type, obtain the interface address of the destination SGW corresponding to the destination base station; In response to the forward relocation request, the interface address of the destination SGW is sent to the mobility management network element at the source end.

8. The method as described in claim 7, characterized in that, Based on the SGW interface address type, obtain the interface address of the destination SGW corresponding to the destination base station, including: Send an indirect forwarding channel establishment request to the destination SGW corresponding to the destination base station, wherein the indirect forwarding channel establishment request carries the SGW interface address type; The interface address of the destination SGW returned in response to the indirect forwarding channel establishment request is received, and the interface address of the destination SGW is of the SGW interface address type.

9. A base station handover device, characterized in that, include: A memory and a processor electrically connected to the memory, the memory storing a computer program executable by the processor, the computer program, when executed by the processor, implementing the steps of the method as described in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method as described in any one of claims 1 to 8.

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