A control method and device for data copying function, and computer storage medium

Abstract

The present invention discloses a control method and device for a data replication function, and a computer storage medium. The method comprises: a terminal receives a medium access control information MAC CE sent by a base station, and the MAC CE supports a first network protocol; the terminal controls a data replication function of a packet data convergence protocol PDCP entity of the terminal based on the MAC CE, and the PDCP entity supports a second network protocol.

Description

Technical Field

[0001] The present invention relates to the field of mobile communications, and in particular to a control method and device for a data copying function, and a computer storage medium. Background Art

[0002] In a wireless communication system, the Packet Data Convergence Protocol (PDCP) entity has a data duplication function, through which two copies of data can be transmitted to two Radio Link Control Protocol (RLC) entities. Data duplication on the PDCP entity supports Carrier Aggregation duplication (CA) and Dual Connectivity duplication.

[0003] In the research of the new generation of mobile communications (NR, New Radio), the version of the PDCP entity that supports the data replication function is NR, and the version of the media access control-control information (MAC CE, Media Access Control-Control Element) that can control the data replication function of the PDCP entity is also NR. However, after the long-term evolution (LTE, LongTerm Evolution) is upgraded, there may also be a PDCP entity that supports the data replication function and a MAC CE that can control the data replication function of the PDCP entity. In this case, the versions of the PDCP entity and MAC CE are both LTE.

[0004] In the scenario where LTE and NR coexist, how to implement different versions of MAC CE to control the PDCP entity is an issue to be resolved. Summary of the invention

[0005] In order to solve the above technical problems, the embodiments of the present invention provide a control method and device for a data replication function, and a computer storage medium.

[0006] The control method of the data replication function provided by the embodiment of the present invention includes:

[0007] The terminal receives a MAC CE sent by the base station, where the MAC CE supports a first network protocol;

[0008] The terminal controls a data copy function of a PDCP entity of the terminal based on the MAC CE, and the PDCP entity supports a second network protocol.

[0009] In an embodiment of the present invention, the first network protocol is an LTE network protocol, and the second network protocol is an NR network protocol.

[0010] In an embodiment of the present invention, the first network protocol is an NR network protocol, and the second network protocol is an LTE network protocol.

[0011] In the embodiment of the present invention, the terminal controls the data copy function of the PDCP entity of the terminal based on the MAC CE, including:

[0012] The terminal uses the MAC CE under the LTE network protocol to control the data copy function of the PDCP entity under the NR network protocol.

[0013] In the embodiment of the present invention, the terminal controls the data copy function of the PDCP entity of the terminal based on the MAC CE, including:

[0014] The terminal uses the MAC CE under the NR network protocol to control the data copy function of the PDCP entity under the LTE network protocol.

[0015] In the embodiment of the present invention, the data duplication function is a CA duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, and the first RLC entity and the second RLC entity are connected to a third MAC entity;

[0016] The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal, including:

[0017] The terminal controls the CA duplication function of the PDCP entity based on the MAC CE.

[0018] In the embodiment of the present invention, the data duplication function is a DC duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, the first RLC entity is connected to a first MAC entity, and the second RLC entity is connected to a second MAC entity;

[0019] The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal, including:

[0020] The terminal controls the DC duplication function of the PDCP entity based on the MAC CE.

[0021] In the embodiment of the present invention, the PDCP entity is a PDCP entity carried by a primary cell group.

[0022] In the embodiment of the present invention, the PDCP entity is a PDCP entity carried by a secondary cell group.

[0023] In the embodiment of the present invention, the PDCP entity is a PDCP entity using a primary cell group key.

[0024] In the embodiment of the present invention, the PDCP entity is a PDCP entity using a secondary cell group key.

[0025] In the embodiment of the present invention, the PDCP entity is a PDCP entity for offloading bearer.

[0026] In the embodiment of the present invention, the terminal controls the data copy function of the PDCP entity of the terminal based on the MAC CE, including:

[0027] The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal to be in an activated state.

[0028] In the embodiment of the present invention, the terminal controls the data copy function of the PDCP entity of the terminal based on the MAC CE, including:

[0029] The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal to be in a deactivated state.

[0030] The control device for the data replication function provided by the embodiment of the present invention includes:

[0031] A receiving unit, configured to receive a MAC CE sent by a base station, wherein the MAC CE supports a first network protocol;

[0032] A control unit is configured to control a data replication function of a PDCP entity of the terminal based on the MAC CE, wherein the PDCP entity supports a second network protocol.

[0033] In an embodiment of the present invention, the first network protocol is an LTE network protocol, and the second network protocol is an NR network protocol.

[0034] In an embodiment of the present invention, the first network protocol is an NR network protocol, and the second network protocol is an LTE network protocol.

[0035] In an embodiment of the present invention, the control unit is specifically configured to control the data replication function of the PDCP entity under the NR network protocol by utilizing the MAC CE under the LTE network protocol.

[0036] In an embodiment of the present invention, the control unit is specifically configured to control the data replication function of the PDCP entity under the LTE network protocol by utilizing the MAC CE under the NR network protocol.

[0037] In the embodiment of the present invention, the data duplication function is a CA duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, and the first RLC entity and the second RLC entity are connected to a third MAC entity;

[0038] The control unit is specifically configured to control the CAduplication function of the PDCP entity based on the MAC CE.

[0039] In the embodiment of the present invention, the data duplication function is a dual connection duplication DC duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, the first RLC entity is connected to a first MAC entity, and the second RLC entity is connected to a second MAC entity;

[0040] The control unit is specifically configured to control the DCduplication function of the PDCP entity based on the MAC CE.

[0041] In the embodiment of the present invention, the PDCP entity is a PDCP entity carried by a primary cell group.

[0042] In the embodiment of the present invention, the PDCP entity is a PDCP entity carried by a secondary cell group.

[0043] In the embodiment of the present invention, the PDCP entity is a PDCP entity using a primary cell group key.

[0044] In the embodiment of the present invention, the PDCP entity is a PDCP entity using a secondary cell group key.

[0045] In the embodiment of the present invention, the PDCP entity is a PDCP entity for offloading bearer.

[0046] In the embodiment of the present invention, the control unit is specifically configured to control the data copy function of the PDCP entity of the terminal to be in an activated state based on the MAC CE.

[0047] In the embodiment of the present invention, the control unit is specifically configured to control the data copy function of the PDCP entity of the terminal to be in a deactivated state based on the MAC CE.

[0048] The computer storage medium provided by the embodiment of the present invention stores computer executable instructions thereon, and the computer executable instructions, when executed by a processor, implement the control method of the above-mentioned data copy function.

[0049] In the technical solution of the embodiment of the present invention, the terminal receives a MAC CE sent by a base station, and the MAC CE supports a first network protocol; the terminal controls the data replication function of the PDCP entity of the terminal based on the MAC CE, and the PDCP entity supports a second network protocol. By adopting the technical solution of the embodiment of the present invention, the control of the data replication function of the PDCP entity by the MAC CE between different network protocols (i.e., different versions) can be realized, thereby improving the compatibility of the two network protocols. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0051] Figure 1 A protocol architecture diagram based on DC duplication according to an embodiment of the present invention;

[0052] Figure 2 A diagram of a protocol architecture based on CA duplication according to an embodiment of the present invention;

[0053] Figure 3 A schematic flow chart of a method for controlling a data replication function according to an embodiment of the present invention;

[0054] Figure 4 A schematic diagram of the structure of a control device for a data replication function according to an embodiment of the present invention;

[0055] Figure 5 The figure is a schematic diagram of the structure of a terminal according to an embodiment of the present invention. DETAILED DESCRIPTION

[0056] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present invention, the implementation of the embodiments of the present invention is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not intended to limit the embodiments of the present invention.

[0057] In order to facilitate understanding of the technical solution of the embodiment of the present invention, the data replication method involved in the embodiment of the present invention is described below.

[0058] 1) DC duplication

[0059] Figure 1FIG. 4 is a diagram of a protocol architecture based on DC duplication according to an embodiment of the present invention. Figure 1 As shown, the replication data transmission method adopts the split bearer protocol architecture. The left figure is a schematic diagram of downlink data transmission, and the right figure is a schematic diagram of uplink data transmission. The process of uplink data transmission corresponds to the process of downlink data transmission.

[0060] For the downlink data transmission process, the PDCP entity is located in a certain cell group (CG) (the CG can be the main cell group (MCG) or the secondary cell group (SCG)), and the CG is the anchor CG. The PDCP entity copies the PDCP service data unit (SDU) into two identical copies, for example, one is a PDCP PDU and the other is a Duplicated PDCP PDU. The two PDCP PDUs pass through the RLC entity and MAC entity of different CGs (such as GG1 and CG2 in the figure), and then reach the corresponding MAC entity and RLC entity of the terminal (UE, User Equipment) through the air interface, and finally converge to the PDCP entity. When the PDCP entity detects that the two PDCP PDUs are the same, it discards one of them and submits the other to the upper layer.

[0061] For the uplink data transmission process, the PDCP entity is located in a certain terminal. The PDCP entity copies the PDCP SDU into two identical copies, such as one is a PDCP PDU and the other is a Duplicated PDCP PDU. The two PDCP PDUs pass through different RLC entities and MAC entities, and then reach the corresponding MAC entities and RLC entities of two CGs (CG1 and CG2 in the figure) in two ways through the air interface, and finally converge to the PDCP entity of one of the CGs (CG1 in the figure). When the PDCP entity detects that the two PDCP PDUs are the same, it discards one of them and submits the other to the upper layer.

[0062] In the above scheme, the bearers corresponding to the two RLC entities and MAC entity respectively connected under the PDCP entity are called split bearers. If the PDCP entity is located in MCG, the split bearer is called MCG Split Bearer. If the PDCP entity is located in SCG, the split bearer is called SCG Split Bearer.

[0063] 2) CA duplication

[0064] Figure 2FIG. 4 is a diagram of a protocol architecture based on CA duplication according to an embodiment of the present invention. Figure 2 As shown, the replicated data transmission method utilizes the data replication function of the PDCP entity so that the two replicated PDCP PDUs are transmitted to two RLC entities (corresponding to two different logical channels) respectively, and ultimately ensures that the two replicated PDCP PDUs can be transmitted on different physical layer aggregation carriers (Physical Carrier 1 and Physical Carrier 2 as shown in the figure), thereby achieving frequency diversity gain to improve data transmission reliability.

[0065] Depend on Figure 1 and Figure 2 It can be seen that for the duplicate data transmission on the terminal side, DC duplication corresponds to two MAC entities, and CA duplication corresponds to one MAC entity.

[0066] Figure 3 FIG. 1 is a flow chart of a method for controlling a data replication function according to an embodiment of the present invention. Figure 3 As shown, the control method of the data replication function includes the following steps:

[0067] Step 301: A terminal receives a MAC CE sent by a base station, where the MAC CE supports a first network protocol.

[0068] Step 302: The terminal controls a data replication function of a PDCP entity of the terminal based on the MAC CE, and the PDCP entity supports a second network protocol.

[0069] In the embodiment of the present invention, the first network protocol and the second network protocol are different network protocols.

[0070] For example: the first network protocol is the LTE network protocol, and the second network protocol is the NR network protocol; or, the first network protocol is the NR network protocol, and the second network protocol is the LTE network protocol.

[0071] In one embodiment, the first network protocol is an LTE network protocol, and the second network protocol is an NR network protocol; in this scenario, the terminal uses the MAC CE under the LTE network protocol to control the data replication function of the PDCP entity under the NR network protocol.

[0072] In another embodiment, the first network protocol is the NR network protocol, and the second network protocol is the LTE network protocol; in this scenario, the terminal uses the MAC CE under the NR network protocol to control the data copy function of the PDCP entity under the LTE network protocol.

[0073] In the above scheme, no matter which control mode is used, it can be applied to two data replication scenarios. The two data replication scenarios are described below respectively.

[0074] The first data duplication scenario: the data duplication function is a CA duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, and the first RLC entity and the second RLC entity are connected to a third MAC entity, referring to Figure 2 .

[0075] In this scenario, the terminal controls the CA duplication function of the PDCP entity based on the MAC CE.

[0076] For example: the terminal uses the MAC CE under the LTE network protocol to control the CA duplication function of the PDCP entity under the NR network protocol.

[0077] For another example: the terminal uses the MAC CE under the NR network protocol to control the CA duplication function of the PDCP entity under the LTE network protocol.

[0078] The second data duplication scenario: the data duplication function is a dual connection duplication DC duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, the first RLC entity is connected to a first MAC entity, and the second RLC entity is connected to a second MAC entity, refer to Figure 1 .

[0079] In this scenario, the terminal controls the DC duplication function of the PDCP entity based on the MAC CE.

[0080] For example: the terminal uses the MAC CE under the LTE network protocol to control the DC duplication function of the PDCP entity under the NR network protocol.

[0081] For another example: the terminal uses the MAC CE under the NR network protocol to control the DC duplication function of the PDCP entity under the LTE network protocol.

[0082] The PDCP entity in the embodiment of the present invention may be, for example, a PDCP entity carried by a primary cell group, or a PDCP entity carried by a secondary cell group, or a PDCP entity using a primary cell group key, or a PDCP entity using a secondary cell group key.

[0083] In the embodiment of the present invention, the PDCP entity is a PDCP entity for offloading bearer.

[0084] In the above scheme, the terminal controls the data replication function of the PDCP entity of the terminal based on the MAC CE, which means: the terminal controls the data replication function of the PDCP entity of the terminal based on the MAC CE to be in an activated state; or, the terminal controls the data replication function of the PDCP entity of the terminal based on the MAC CE to be in a deactivated state.

[0085] Figure 4 FIG. 1 is a schematic diagram of the structure of a control device for a data replication function according to an embodiment of the present invention. Figure 4 As shown, the device comprises:

[0086] The receiving unit 401 is configured to receive a MAC CE sent by a base station, where the MAC CE supports a first network protocol;

[0087] The control unit 402 is configured to control a data replication function of a PDCP entity of the terminal based on the MAC CE, wherein the PDCP entity supports a second network protocol.

[0088] In one embodiment of the present invention, the first network protocol is an LTE network protocol, and the second network protocol is an NR network protocol.

[0089] In another embodiment of the present invention, the first network protocol is an NR network protocol, and the second network protocol is an LTE network protocol.

[0090] In this embodiment of the present invention, if the first network protocol is an LTE network protocol and the second network protocol is an NR network protocol, then:

[0091] The control unit 402 is specifically configured to use the MAC CE under the LTE network protocol to control the data copy function of the PDCP entity under the NR network protocol.

[0092] In this embodiment of the present invention, if the first network protocol is an NR network protocol and the second network protocol is an LTE network protocol, then:

[0093] The control unit 402 is specifically configured to use the MAC CE under the NR network protocol to control the data copy function of the PDCP entity under the LTE network protocol.

[0094] In the embodiment of the present invention, the data duplication function is a CA duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, and the first RLC entity and the second RLC entity are connected to a third MAC entity;

[0095] The control unit 402 is specifically configured to control the CAduplication function of the PDCP entity based on the MAC CE.

[0096] In the embodiment of the present invention, the data duplication function is a dual connection duplication DC duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, the first RLC entity is connected to a first MAC entity, and the second RLC entity is connected to a second MAC entity;

[0097] The control unit 402 is specifically configured to control the DCduplication function of the PDCP entity based on the MAC CE.

[0098] In one implementation of the present invention, the PDCP entity is a PDCP entity carried by a primary cell group.

[0099] In one implementation of the present invention, the PDCP entity is a PDCP entity carried by a secondary cell group.

[0100] In one embodiment of the present invention, the PDCP entity is a PDCP entity using a primary cell group key.

[0101] In an implementation manner of the present invention, the PDCP entity is a PDCP entity using a secondary cell group key.

[0102] In one implementation of the present invention, the PDCP entity is a PDCP entity for offloading bearers.

[0103] In an implementation manner of the present invention, the control unit 402 is specifically configured to control the data replication function of the PDCP entity of the terminal to be in an activated state based on the MAC CE.

[0104] In another embodiment of the present invention, the control unit 402 is specifically configured to control the data copy function of the PDCP entity of the terminal to be in a deactivated state based on the MAC CE.

[0105] Those skilled in the art should understand that Figure 4 The implementation functions of each unit in the control device for the data replication function shown can be understood by referring to the relevant description of the control method for the data replication function mentioned above. Figure 4The functions of the various units in the control device for the data copy function shown may be implemented by a program running on a processor, or may be implemented by a specific logic circuit.

[0106] If the control device of the data copy function of the embodiment of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read Only Memory), a magnetic disk or an optical disk. In this way, the embodiment of the present invention is not limited to any specific combination of hardware and software.

[0107] Correspondingly, an embodiment of the present invention further provides a computer storage medium, in which computer executable instructions are stored. When the computer executable instructions are executed by a processor, the control method of the data copy function of the embodiment of the present invention is implemented.

[0108] Figure 5 FIG. 1 is a schematic diagram of the structure of a terminal according to an embodiment of the present invention. Figure 5 As shown, the terminal 100 may include one or more (only one is shown in the figure) processors 12 (the processor 12 may include but is not limited to a processing device such as a microprocessor (MCU, MicroController Unit) or a programmable logic device (FPGA, Field Programmable Gate Array)), a memory 14 for storing data, and a transmission device 16 for communication functions. It can be understood by those skilled in the art that Figure 5 The structure shown is for illustration only and does not limit the structure of the above electronic device. Figure 5 More or fewer components as shown, or with Figure 5 Different configurations shown.

[0109] The memory 14 can be used to store software programs and modules of application software, such as program instructions / modules corresponding to the control method of the data copy function in the embodiment of the present invention. The processor 12 executes various functional applications and data processing by running the software programs and modules stored in the memory 14, that is, to implement the above method. The memory 14 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 14 may further include a memory remotely arranged relative to the processor 12, and these remote memories may be connected to the terminal 100 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0110] The transmission device 16 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the terminal 100. In one example, the transmission device 16 includes a network adapter (NIC, Network Interface Controller), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 16 can be a radio frequency (RF, Radio Frequency) module, which is used to communicate with the Internet wirelessly.

[0111] The technical solutions described in the embodiments of the present invention can be combined arbitrarily without conflict.

[0112] In the several embodiments provided by the present invention, it should be understood that the disclosed methods and intelligent devices can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0113] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0114] In addition, all functional units in the embodiments of the present invention may be integrated into a second processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0115] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for controlling a data replication function, the method comprising: The terminal receives a medium access control-control information MAC CE sent by the base station, where the MAC CE supports a first network protocol; The terminal controls a data replication function of a Packet Data Convergence Protocol (PDCP) entity of the terminal based on the MAC CE, wherein the PDCP entity supports a second network protocol. The data duplication function is a carrier aggregation duplication CA duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, and the first RLC entity and the second RLC entity are connected to a third MAC entity; The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal, including: The terminal controls the CA duplication function of the PDCP entity based on the MAC CE.

2. The method for controlling the data copy function according to claim 1, wherein: The first network protocol is a long term evolution (LTE) network protocol, and the second network protocol is a new generation mobile communication (NR) network protocol.

3. The control method of the data copy function according to claim 1, wherein: The first network protocol is the NR network protocol, and the second network protocol is the LTE network protocol.

4. The control method of the data copy function according to claim 2, wherein: The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal, including: The terminal uses the MAC CE under the LTE network protocol to control the data copy function of the PDCP entity under the NR network protocol.

5. The control method of the data copy function according to claim 3, wherein: The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal, including: The terminal uses the MAC CE under the NR network protocol to control the data copy function of the PDCP entity under the LTE network protocol.

6. The method for controlling a data copy function according to any one of claims 1 to 5, wherein: The PDCP entity is a PDCP entity carried by a primary cell group.

7. The method for controlling a data copy function according to any one of claims 1 to 5, wherein: The PDCP entity is a PDCP entity carried by the secondary cell group.

8. The method for controlling a data copy function according to any one of claims 1 to 5, wherein: The PDCP entity is a PDCP entity that uses a primary cell group key.

9. The method for controlling a data copy function according to any one of claims 1 to 5, wherein: The PDCP entity is a PDCP entity that uses a secondary cell group key.

10. The method for controlling a data copy function according to any one of claims 1 to 5, wherein: The PDCP entity is a PDCP entity for offloading bearer.

11. The method for controlling a data copy function according to any one of claims 1 to 5, wherein: The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal, including: The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal to be in an activated state.

12. The method for controlling a data copy function according to any one of claims 1 to 5, wherein: The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal, including: The terminal controls, based on the MAC CE, a data copy function of a PDCP entity of the terminal to be in a deactivated state.

13. A control device for a data replication function, the device comprising: A receiving unit, configured to receive a MAC CE sent by a base station, wherein the MAC CE supports a first network protocol; a control unit configured to control a data replication function of a PDCP entity of the terminal based on the MAC CE, wherein the PDCP entity supports a second network protocol, The data duplication function is a CA duplication function; accordingly, the PDCP entity is connected to a first radio link control protocol RLC entity and a second RLC entity, and the first RLC entity and the second RLC entity are connected to a third MAC entity; The control unit is specifically configured to control the CA duplication function of the PDCP entity based on the MAC CE.

14. The control device for a data copy function according to claim 13, wherein: The first network protocol is an LTE network protocol, and the second network protocol is an NR network protocol.

15. The control device for a data copy function according to claim 13, wherein: The first network protocol is the NR network protocol, and the second network protocol is the LTE network protocol.

16. The control device for a data copy function according to claim 14, wherein: The control unit is specifically configured to control the data copy function of the PDCP entity under the NR network protocol by using the MAC CE under the LTE network protocol.

17. The control device for a data copy function according to claim 15, wherein: The control unit is specifically configured to control the data copy function of the PDCP entity under the LTE network protocol by utilizing the MAC CE under the NR network protocol.

18. The control device for a data copy function according to any one of claims 13 to 17, wherein: The PDCP entity is a PDCP entity carried by a primary cell group.

19. The control device for a data copy function according to any one of claims 13 to 17, wherein: The PDCP entity is a PDCP entity carried by the secondary cell group.

20. The control device for a data copy function according to any one of claims 13 to 17, wherein: The PDCP entity is a PDCP entity that uses a primary cell group key.

21. The control device for a data copy function according to any one of claims 13 to 17, wherein: The PDCP entity is a PDCP entity that uses a secondary cell group key.

22. The control device for a data copy function according to any one of claims 13 to 17, wherein: The PDCP entity is a PDCP entity for offloading bearer.

23. The control device for a data copy function according to any one of claims 13 to 17, wherein: The control unit is specifically configured to control the data copy function of the PDCP entity of the terminal to be in an activated state based on the MAC CE.

24. The control device for a data copy function according to any one of claims 13 to 17, wherein: The control unit is specifically configured to control the data copy function of the PDCP entity of the terminal to be in a deactivated state based on the MAC CE.

25. A computer storage medium having computer executable instructions stored thereon, wherein the computer executable instructions, when executed by a processor, implement the method steps described in any one of claims 1 to 12.

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