Mobility management methods, apparatus, devices and readable storage media

Abstract

The embodiment of the present invention provides a mobility management method, apparatus, device and readable storage medium, the method comprising: sending control information of a terminal to a control function unit of a target cell; wherein the data centralized management unit manages the source cell and the target cell, or the data centralized management unit manages the target cell. In the embodiment of the present invention, through the interaction between the data centralized management unit and the control function unit in the base station or the user function unit in the base station, on the one hand, the separation of computing and data is achieved, and the data centralized management unit has comprehensive terminal context and service data information, which is convenient for the generation of AI training data under the network architecture with endogenous intelligence. On the user plane, by introducing the data centralized management unit, the amount of data forwarding can be reduced and the time of user plane data interruption can be reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communication technology, and in particular to a mobility management method, apparatus, device and readable storage medium. Background Art

[0002] The fifth generation of mobile communication technology (5G) mentions three major business scenarios, namely, large bandwidth business, low latency and high reliability business, and large connection business. The sixth generation of mobile communication technology (6G) will definitely have better requirements than 5G, such as larger bandwidth, lower latency, etc. In the existing 5G standard, for low latency and high reliability business, the user plane reduces the latency and improves reliability by introducing mechanisms such as resource preemption and repeated transmission of the Packet Data Convergence Protocol (PDCP). With the penetration of the Network Function Virtualization (NFV) architecture into wireless networks, the integration of new technologies in Information Technology (IT) and Communication Technology (CT), and the consideration of service, 6G can have more control methods and signaling process optimization solutions.

[0003] However, there is currently a lack of interaction processes between the data central management unit and the wireless access network in the 6G system. Summary of the invention

[0004] One purpose of an embodiment of the present invention is to provide a mobility management method, apparatus, device and readable storage medium to solve the problem of how to implement the interaction process between a data concentration management unit and a wireless access network in a 6G system.

[0005] In a first aspect, a mobility management method is provided, which is performed by a data centralized management unit and includes:

[0006] Sending control information of the terminal to the control function unit of the target cell;

[0007] The data centralized management unit manages the source cell and the target cell, or the data centralized management unit manages the target cell.

[0008] Optionally, the control information includes one or more of the following: terminal context, security context and protocol data unit PDU session information.

[0009] Optionally, the data concentration management unit manages the source cell and the target cell, and the sending of the control information of the terminal to the control function unit of the target cell includes:

[0010] Obtain a first message from a control function unit of a source cell;

[0011] According to the first message, control information of the terminal is sent to the control function unit of the target cell.

[0012] Optionally, the method further comprises:

[0013] Release control information of the terminal related to the source cell.

[0014] Optionally, the data concentration management unit manages the target cell, and before the step of sending the control information of the terminal to the control function unit of the target cell, the method further includes:

[0015] The data centralized management unit of the receiving source cell manages the control information of the terminal sent.

[0016] Optionally, the method further comprises:

[0017] The updated control information of the terminal is received from the control function unit of the target cell.

[0018] Optionally, the method further comprises:

[0019] The updated control information of the terminal is sent to the data centralized management unit of the source cell.

[0020] In a second aspect, a mobility management method is provided, which is performed by a data centralized management unit of a source cell, and includes:

[0021] After generating the handover command message of the first terminal, buffering the data packet from the core network;

[0022] Suspend sending the data packet of the first terminal to the user plane function unit of the source cell.

[0023] Optionally, the method further comprises:

[0024] receiving a second message from a user plane function of the source cell, the second message indicating a data packet that was not correctly transmitted;

[0025] According to the second message, the incorrectly transmitted data packet is saved.

[0026] Optionally, the method further comprises:

[0027] The incorrectly transmitted data packet and the data packet received from the core network are sent to a user plane function unit of the target cell.

[0028] In a third aspect, a mobility management device is provided, which is applied to a data centralized management unit, including:

[0029] A first sending module, used to send control information of the terminal to the control function unit of the target cell;

[0030] The data centralized management unit manages the source cell and the target cell, or the data centralized management unit manages the target cell.

[0031] In a fourth aspect, a mobility management device is provided, which is applied to a data centralized management unit of a source cell, including:

[0032] A cache module, configured to cache data packets from a core network after generating a handover command message for the first terminal;

[0033] A control module is used to suspend sending the data packet of the first terminal to the user plane function unit of the source cell.

[0034] In a fifth aspect, a communication device is provided, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described in the first aspect or the second aspect.

[0035] In a sixth aspect, a readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0036] In the embodiment of the present invention, through the interaction between the data centralized management unit and the control function unit in the base station or the user function unit in the base station, on the one hand, the separation of computing and data is achieved, and the data centralized management unit has comprehensive terminal context and service data information, which is convenient for the generation of artificial intelligence (AI) training data under the network architecture with endogenous intelligence. On the user plane, by introducing the data centralized management unit, the amount of data forwarding can be reduced and the time of data interruption on the user plane can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0038] Figure 1 This is one of the flow charts of the mobility management method in the embodiment of the present application;

[0039] Figure 2 This is the second flow chart of the mobility management method in the embodiment of the present application;

[0040] Figure 3 This is the third flow chart of the mobility management method in the embodiment of the present application;

[0041] Figure 4 This is the fourth flow chart of the mobility management method in the embodiment of the present application;

[0042] Figure 5 This is the fifth flow chart of the mobility management method in the embodiment of the present application;

[0043] Figure 6 This is a schematic diagram of a data concentration management unit in an embodiment of the present application;

[0044] Figure 7 This is the sixth flow chart of the mobility management method in the embodiment of the present application;

[0045] Figure 8 This is one of the schematic diagrams of the mobility management device in the embodiment of the present application;

[0046] Fig. 9 This is a second schematic diagram of the mobility management device in an embodiment of the present application;

[0047] Fig.10 Schematic diagram of a communication device in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] The term "comprise" and any variation thereof in the specification and claims of the present application are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, such as A and / or B, means that A alone, B alone, and A and B exist in three cases.

[0050] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0051] The terms "system" and "network" are often used interchangeably. A CDMA system may implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA). UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. A TDMA system may implement radio technologies such as Global System for Mobile Communication (GSM). An OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), Evolution-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of Universal Mobile Telecommunications System (UMTS). LTE and more advanced LTE (such as LTE-A) are new UMTS versions that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies.

[0052] See also Figure 1 , an embodiment of the present application provides a mobility management method, which is executed by a data centralized management unit, and the specific steps include: step 101.

[0053] Step 101: Sending control information of the terminal (or information related to the control plane) to the control function unit of the target cell;

[0054] The data centralized management unit manages the source cell and the target cell, or the data centralized management unit manages the target cell.

[0055] The above-mentioned data centralized management unit is designed according to the idea of ​​separation of computing and storage. This data centralized management unit can realize network capability opening and support the deployment and execution of third-party policies. Figure 6 .

[0056] The control function unit may be a control plane or a control plane function entity, and the control function unit of the target cell may be a control plane or a control plane function entity of a base station of the target cell.

[0057] In an embodiment of the present application, the control information includes one or more of the following: (1) terminal context, (2) security context and (3) protocol data unit (PDU) session information.

[0058] In an embodiment of the present invention, through the interaction between the data centralized management unit and the control function unit in the base station, on the one hand, the separation of computing and data is achieved. The data centralized management unit has comprehensive terminal context and business data information, which is convenient for the generation of AI training data under the network architecture with endogenous intelligence.

[0059] See also Figure 2 An embodiment of the present application provides a mobility management method, which is executed by a data centralized management unit, and the data centralized management unit manages the source cell and the target cell. The specific steps include: step 201, step 202 and step 203.

[0060] Step 201: Obtain a first message from a control function unit of a source cell;

[0061] The control function unit of the source cell may be a control plane or a control plane function entity of a base station of the source cell.

[0062] The first message is used to instruct the data concentration management unit to push the control information of the terminal to the target cell.

[0063] Step 202: Sending control information of the terminal to a control function unit of a target cell according to the first message;

[0064] Step 203: Release the control information of the terminal related to the source cell.

[0065] It is understandable that step 203 is an optional step. In the embodiment of the present application, the control information includes one or more of the following: (1) terminal context, (2) security context and (3) PDU session information.

[0066] In an embodiment of the present invention, through the interaction between the data centralized management unit and the control function unit in the base station, on the one hand, the separation of computing and data is achieved. The data centralized management unit has comprehensive terminal context and business data information, which is convenient for the generation of AI training data under the network architecture with endogenous intelligence.

[0067] See also Figure 3 An embodiment of the present application provides a mobility management method, which is executed by a data centralized management unit, and the data centralized management unit manages the target cell. The specific steps include: step 301, step 302, step 303 and step 304.

[0068] Step 301: receiving control information of a terminal sent by a centralized data management unit of a source cell;

[0069] Step 302: Sending control information of the terminal to the control function unit of the target cell;

[0070] In an embodiment of the present application, the control information includes one or more of the following: (1) terminal context, (2) security context and (3) PDU session information.

[0071] Step 303: receiving updated control information of the terminal from the control function unit of the target cell;

[0072] Step 304: Send the updated control information of the terminal to the data centralized management unit of the source cell.

[0073] It can be understood that step 303 and step 304 are optional steps.

[0074] In an embodiment of the present invention, through the interaction between the data centralized management unit and the control function unit in the base station, on the one hand, the separation of computing and data is achieved. The data centralized management unit has comprehensive terminal context and business data information, which is convenient for the generation of AI training data under the network architecture with endogenous intelligence.

[0075] See also Figure 4 , an embodiment of the present application provides a mobility management method, which is executed by a data centralized management unit of a source cell, and the specific steps include: step 401 and step 402.

[0076] Step 401: After generating a handover command message of a first terminal, buffering a data packet from a core network;

[0077] Step 402: Stop sending the data packet of the first terminal to the user plane function unit of the source cell.

[0078] In an embodiment of the present invention, the network side can combine the user trajectory prediction method to predict the terminal switching needs in advance and perform advance switching preparations. The control function unit corresponding to the source cell notifies the target cell to read or the source cell notifies the data centralized management unit to push the UE context information corresponding to the user to the target cell. The target cell updates the user context if necessary according to its capabilities. The source cell notifies the target cell to read the UE context information corresponding to the data centralized management unit, and stores the user data received from the core network in the centralized management unit, and suspends the distribution of data to the source cell. On the one hand, it can reduce the time for the terminal to switch to the target cell, and on the other hand, it also reduces the amount of forwarded data.

[0079] See also Figure 5 An embodiment of the present application provides a mobility management method, which is executed by a data centralized management unit of a source cell, and the specific steps include: step 501, step 502, step 503, step 504 and step 505.

[0080] Step 501: After generating a handover command message of a first terminal, buffering a data packet from a core network;

[0081] Step 502: Stop sending the data packet of the first terminal to the user plane function unit of the source cell.

[0082] Step 503: receiving a second message from a user plane function of the source cell, where the second message indicates a data packet that is not correctly transmitted;

[0083] Step 504: according to the second message, save the incorrectly transmitted data packet;

[0084] Step 505: Send the incorrectly transmitted data packet and the data packet received from the core network to the user plane function unit (or user plane function, user plane function entity) of the target cell.

[0085] It can be understood that steps 503 to 505 are optional steps.

[0086] In the embodiment of the present invention, through the interaction between the data centralized management unit and the user function unit in the base station, on the one hand, the separation of computing and data is achieved, and the data centralized management unit has comprehensive terminal context and service data information, which is convenient for the generation of AI training data under the network architecture with endogenous intelligence. On the user plane, by introducing the data centralized management unit, the amount of data forwarding can be reduced and the time of data interruption on the user plane can be reduced.

[0087] To facilitate understanding of the embodiments of the present application, the signaling plane flow of the switching process is introduced below.

[0088] The operations related to the signaling plane are as follows:

[0089] 1. The network side enables the terminal's measurement reporting and selects the target cell based on the terminal's measurement results.

[0090] 2. Determine whether the target cell and the original cell are under the same centralized data management architecture. If they are under the same data management, the control function unit corresponding to the source cell notifies the target cell to read or the source cell notifies the data centralized management unit to push the UE context information, security context information, PDU session and other control information corresponding to the user to the target cell. The target cell updates the user context if necessary according to its capabilities. At the same time, the original cell notifies the terminal to allow the terminal to access the new cell using the new configuration.

[0091] 3. If the target cell and the original cell are not under the same centralized data management architecture, the source cell determines the data centralized management unit module where the target cell is located by direct or indirect means, for example, through the interaction of data centralized units or the target cell notifies the source cell of the corresponding centralized data management unit in advance. The data centralized management unit corresponding to the original cell pushes the existing UE context information to the data centralized management unit where the target cell is located through the network. The target cell updates the UE context information if necessary, and sends the updated UE context information to the data centralized management unit corresponding to the source cell.

[0092] 4. The source cell generates a handover command based on the updated UE context information and sends it to the UE. After receiving the command, the UE performs random access to the target cell.

[0093] 5. After the user successfully accesses the target cell randomly, if the source cell and the target cell are in the same centralized data management architecture, the data centralized management unit releases all UE context information related to the source cell. If the target cell and the source cell do not correspond to the same data centralized management unit, the control unit of the target cell notifies the data centralized management unit of the source cell to delete the UE context information corresponding to the source cell.

[0094] The introduction of a centralized data management unit is consistent with the existing development trend of separation of computing and storage on the one hand; on the other hand, the centralized data management unit, as a centralized point for UE context information and user data information, is more conducive to integration with artificial intelligence and facilitates the provision of training data sets.

[0095] To facilitate understanding of the embodiments of the present application, the user plane flow of the switching process is introduced below.

[0096] User plane related operations are as follows:

[0097] 1. After the source cell generates a handover command message, the data concentration management unit corresponding to the source cell caches the data from the core network and stops sending the data corresponding to the user to the user plane processing unit.

[0098] 2. For the data of the user that has been processed by the source cell, if the current mode is confirmation, the source cell informs the data center management unit of the data packets that have not been correctly transmitted, and the data center management unit saves the data packets that have not been correctly transmitted in sequence.

[0099] 3. After the terminal attaches to the target cell, if necessary, the base station corresponding to the target cell updates the base station information where the user is located and the transmission connection information between the target cell and the core network to the core network.

[0100] 4. The target cell sends the incorrectly transmitted data packets and the data packets received by the data concentration management unit from the core network buffer to the terminal in sequence.

[0101] 5. On the terminal side, if there are unconfirmed data packets in the uplink data, the terminal sends them to the target cell in sequence.

[0102] See also Figure 7 , the figure shows the interaction process between network function modules under the data centralized management unit. By introducing the data centralized management unit, for the handover process under the same data centralized management unit, the target cell control function unit updates the UE context information in the data centralized management unit. For the handover process under different data centralized management units, if the centralized data management unit where the source cell is located and the centralized data management unit where the target cell is located have established a connection, the target cell will send the updated UE context information to the centralized data management unit where the target cell is located through the centralized data management unit where the source cell is located. On the user plane, by introducing the data centralized management unit, the data centralized management unit can stop sending data to the source cell in advance, reduce the amount of data forwarded, and thus reduce the time of data interruption on the user plane.

[0103] Step 1: UE measurement reporting;

[0104] Step 2: The source cell notifies the data concentration unit to push the UE context information to the target cell;

[0105] Step 3: The centralized data management unit sends the UE context information to the control function unit of the target cell;

[0106] Step 4: The target cell updates the UE context information and backs up the source cell UE context information;

[0107] Step 5: The centralized data management unit informs the source cell of the updated UE context information;

[0108] Step 6: The control function unit of the source cell notifies the UE of the new access cell and the corresponding configuration.

[0109] Step 7: Random Access Procedure;

[0110] Step 8: RRC Reconfiguration Complete;

[0111] Step 9: The control function unit of the target cell notifies the source cell to release the UE context information;

[0112] Step 10: The control function unit of the target cell notifies the core network to update the base station information or data link.

[0113] See also Figure 8 The embodiment of the present application provides a mobility management device, which is applied to a data concentration management unit. The device 800 includes:

[0114] A first sending module 801 is used to send control information of the terminal to the control function unit of the target cell;

[0115] The data centralized management unit manages the source cell and the target cell, or the data centralized management unit manages the target cell.

[0116] In an embodiment of the present application, the control information includes one or more of the following: terminal context, security context and PDU session information.

[0117] In the embodiment of the present application, the data concentration management unit manages the source cell and the target cell, and the first sending module 801 includes:

[0118] An acquiring unit, configured to acquire a first message from a control function unit of a source cell;

[0119] A sending unit is used to send the control information of the terminal to the control function unit of the target cell according to the first message.

[0120] In the embodiment of the present application, the apparatus 800 further includes:

[0121] The release module is used to release the control information of the terminal related to the source cell.

[0122] In the embodiment of the present application, the data concentration management unit manages the target cell, and the device further includes:

[0123] The first receiving module is used to receive control information of the terminal sent by the data centralized management unit of the source cell.

[0124] In the embodiment of the present application, the apparatus 800 further includes:

[0125] The second receiving module is used to receive updated control information of the terminal from the control function unit of the target cell.

[0126] In the embodiment of the present application, the apparatus 800 further includes:

[0127] The second sending module is used to send the updated control information of the terminal to the data centralized management unit of the source cell.

[0128] The device provided in the embodiment of the present application can achieve Figure 1-Figure 3 The various processes implemented by the method embodiment shown achieve the same technical effect and will not be described again here to avoid repetition.

[0129] See also Fig. 9 The embodiment of the present application provides a mobility management device, which is applied to a data centralized management unit of a source cell. The device 900 includes:

[0130] A cache module 901, configured to cache data packets from a core network after generating a handover command message of a first terminal;

[0131] The control module 902 is configured to suspend sending the data packet of the first terminal to the user plane function unit of the source cell.

[0132] In the embodiment of the present application, the device 900 further includes:

[0133] A third receiving module, configured to receive a second message from a user plane function of the source cell, where the second message indicates a data packet that was not correctly transmitted;

[0134] A saving module is used to save the data packet that is not correctly transmitted according to the second message.

[0135] In the embodiment of the present application, the device 900 further includes:

[0136] The third sending module is used to send the incorrectly transmitted data packet and the data packet received from the core network to the user plane function unit of the target cell.

[0137] The device provided in the embodiment of the present application can achieve Figure 4-Figure 5 The various processes implemented by the method embodiment shown achieve the same technical effect and will not be described again here to avoid repetition.

[0138] The present application embodiment also provides a network side device. Fig.10As shown, the network side device 1000 includes: an antenna 1001, a radio frequency device 1002, and a baseband device 1003. The antenna 1001 is connected to the radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001 and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be sent and sends it to the radio frequency device 1002. The radio frequency device 1002 processes the received information and sends it out through the antenna 1001.

[0139] The frequency band processing device may be located in the baseband device 1003 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 1003 . The baseband device 1003 includes a processor 1004 and a memory 1005 .

[0140] The baseband device 1003 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.10 As shown, one of the chips is, for example, a processor 1004, which is connected to a memory 1005 to call a program in the memory 1005 to execute the network device operations shown in the above method embodiment.

[0141] The baseband device 1003 may further include a network interface 1006 for exchanging information with the radio frequency device 1002 . The interface may be, for example, a common public radio interface (CPRI).

[0142] Specifically, the network side device of the embodiment of the present invention further includes: instructions or programs stored in the memory 1005 and executable on the processor 1004, and the processor 1004 calls the instructions or programs in the memory 1005 to execute Figure 8 Or the method executed by each module shown in 9, and achieves the same technical effect, to avoid repetition, it will not be repeated here.

[0143] The communication device provided in the embodiment of the present application can achieve Figure 2-Figure 5 The various processes implemented by the method embodiment shown achieve the same technical effect and will not be described again here to avoid repetition.

[0144] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the above Figure 2-Figure 5 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0145] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0146] The steps of the method or algorithm described in conjunction with the contents disclosed in the present invention can be implemented in hardware or by executing software instructions in a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disks, mobile hard disks, read-only optical disks, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be carried in an ASIC. In addition, the ASIC can be carried in a core network interface device. Of course, the processor and the storage medium can also exist in the core network interface device as discrete components.

[0147] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented using software, the functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium that a general or special-purpose computer can access.

[0148] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solution of the present invention should be included in the scope of protection of the present invention.

[0149] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the embodiments of the present invention may take the form of complete hardware embodiments, complete software embodiments, or embodiments combining software and hardware. Moreover, the embodiments of the present invention may take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0150] The embodiments of the present invention are described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0151] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0152] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0153] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A mobility management method, executed by a data centralized management unit, characterized in that: include: Sending control information of the terminal to the control function unit of the target cell, wherein the control information includes one or more of the following: terminal context, security context and protocol data unit PDU session information; The data concentration management unit manages the source cell and the target cell, and the sending of the control information of the terminal to the control function unit of the target cell includes: Obtaining a first message from a control function unit of a source cell, where the first message is used to instruct the data concentration management unit to push control information of the terminal to a target cell; Sending control information of the terminal to a control function unit of a target cell according to the first message; Alternatively, the data concentration management unit manages the target cell, and before the step of sending the control information of the terminal to the control function unit of the target cell, the method further includes: The control information of the terminal sent by the data centralized management unit of the receiving source cell; Among them, the data centralized management unit manages the source cell and the target cell, or the data centralized management unit manages the target cell, the data centralized management unit is used for data storage and management, the data centralized management unit has no computing power for the data it stores and manages, and the data includes at least one of the terminal context, security context, and user data received by the core network.

2. The method according to claim 1, characterized in that The method further comprises: Release control information of the terminal related to the source cell.

3. The method according to claim 1, characterized in that The method further comprises: The updated control information of the terminal is received from the control function unit of the target cell.

4. The method according to claim 1, characterized in that: The method further comprises: The updated control information of the terminal is sent to the data centralized management unit of the source cell.

5. A mobility management method, executed by a data centralized management unit of a source cell, characterized in that: include: After generating the handover command message of the first terminal, buffering the data packet from the core network; Suspend sending the data packet of the first terminal to the user plane function unit of the source cell, the data concentration management unit is used for data storage and management, the data concentration management unit has no computing capability for the data stored and managed by it, and the data includes one or more of the following: terminal context, security context and protocol data unit PDU session information; The method further comprises: receiving a second message from a user plane function of the source cell, the second message indicating a data packet that was not correctly transmitted; According to the second message, the incorrectly transmitted data packet is saved.

6. The method according to claim 5, characterized in that The method further comprises: The incorrectly transmitted data packet and the data packet received from the core network are sent to the user plane function unit of the target cell.

7. A mobility management device, applied to a data centralized management unit, characterized in that: include: A first sending module, used to send control information of the terminal to the control function unit of the target cell; The data concentration management unit manages the source cell and the target cell, and the first sending module includes: an acquisition unit, used to acquire a first message from the control function unit of the source cell; a sending unit, used to send control information of the terminal to the control function unit of the target cell according to the first message; Alternatively, the data centralized management unit manages the target cell, and the device further includes: a first receiving module, configured to receive control information of the terminal sent by the data centralized management unit of the source cell, wherein the control information includes one or more of the following: terminal context, security context, and protocol data unit PDU session information; Among them, the data centralized management unit manages the source cell and the target cell, or the data centralized management unit manages the target cell, the data centralized management unit is used for data storage and management, the data centralized management unit has no computing power for the data it stores and manages, and the data includes at least one of the terminal context, security context, and user data received by the core network.

8. A mobility management device, applied to a data centralized management unit of a source cell, characterized in that: include: A cache module, configured to cache data packets from a core network after generating a handover command message for the first terminal; A control module, configured to suspend sending a data packet of the first terminal to a user plane function unit of the source cell; The device also includes: A third receiving module, configured to receive a second message from a user plane function of the source cell, where the second message indicates a data packet that was not correctly transmitted; A saving module, used for saving the data packet that is not correctly transmitted according to the second message; The data centralized management unit is used for data storage and management, and the data centralized management unit has no computing capability for the data it stores and manages, and the data includes at least one of the terminal context, security context, and user data received by the core network.

9. A communication device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program implements the steps of the method according to any one of claims 1 to 6 when executed by the processor.

10. A readable storage medium, characterized in that: The readable storage medium stores a program, and when the program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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