A data transmission method, base station, device and medium

Abstract

The present invention discloses a data transmission method, a base station, a device and a medium, including: the base station determines that the attached user equipment has detached, and the base station is a base station with partial core network functions; the base station synchronizes the data sent to the user equipment to the destination base station through the X2 channel, and / or the base station receives the data synchronized by the destination base station through the X2 channel. The base station determines that a user equipment attaches to the present base station; the base station synchronizes the data uploaded by the user equipment to the source base station through the X2 channel, and / or the base station receives the data synchronized by the source base station through the X2 channel. By adopting the present invention, it is possible to support the user equipment to switch between multiple base stations, ensure seamless switching of the user equipment between base stations, and guarantee service continuity.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and particularly to a data transmission method, a base station, a device, and a medium. Background Art

[0002] Currently, there is an independent base station that can be independently deployed, which integrates some core network functions internally and can support the normal operation of the base station without being interconnected with a dedicated EPC (Evolved Packet Core) device. Its functions are the same as those of a conventional base station.

[0003] Figure 1 As shown in the network structure diagram, the independent base station is a distributed control plane LTE (Long Term Evolution) base station device, and the EPC function is deployed on the base station side. A single independent base station can achieve end-to-end LTE networking deployment. Currently, its main application scenario is in the wireless support of fixed broadband networks.

[0004] The disadvantage of the prior art is that due to limitations in the deployment scenario, there is a lack of functionality in supporting the mobility of mobile terminals between independent base stations. Summary of the Invention

[0005] The present invention provides a data transmission method, a base station, a device, and a medium to solve the problem that there is no mobility support for mobile terminals between independent base stations.

[0006] An embodiment of the present invention provides a data transmission method, including:

[0007] The base station determines that the attached UE has detached, and the base station is a base station with some core network functions;

[0008] The base station determines the destination base station to which the UE attaches;

[0009] The base station synchronizes the data sent to the UE to the destination base station through the X2 channel, and / or the base station receives the data synchronized by the destination base station through the X2 channel.

[0010] In implementation, the data sent to the UE is Internet data sent by the ISP to the UE.

[0011] In implementation, the data synchronized by the destination base station through the X2 channel is Internet data uploaded by the UE to the ISP, and further includes:

[0012] The base station uploads the Internet data synchronized by the destination base station through the X2 channel to the ISP.

[0013] An embodiment of the present invention provides a data transmission method, including:

[0014] The base station determines that a UE is attached to this base station, and the base station is a base station with partial core network functions;

[0015] The base station determines the source base station from which the UE detaches;

[0016] The base station synchronizes the data uploaded by the UE to the source base station through the X2 channel, and / or, the base station receives the data synchronized by the source base station through the X2 channel.

[0017] In implementation, the data uploaded by the UE is the Internet data uploaded by the UE to the ISP.

[0018] In implementation, after the base station receives the Internet data sent by the ISP to the UE synchronized by the source base station through the X2 channel, it further includes:

[0019] The base station distributes the Internet data synchronized by the source base station through the X2 channel to the UE.

[0020] An embodiment of the present invention provides a base station, which is a base station with partial core network functions, including:

[0021] A processor, configured to read a program in a memory and execute the following processes:

[0022] Determine that the affiliated UE has detached;

[0023] Determine the destination base station to which the UE attaches;

[0024] Synchronize the data sent to the UE to the destination base station through the X2 channel, and / or, receive the data synchronized by the destination base station through the X2 channel;

[0025] A transceiver, configured to receive and send data under the control of the processor.

[0026] In implementation, the data sent to the UE is the Internet data sent by the ISP to the UE.

[0027] In implementation, the data synchronized by the destination base station through the X2 channel is the Internet data uploaded by the UE to the ISP, and it further includes:

[0028] Upload the Internet data synchronized by the destination base station through the X2 channel to the ISP.

[0029] An embodiment of the present invention provides a base station, which is a base station with partial core network functions, including:

[0030] A processor for reading a program in a memory and performing the following processes:

[0031] Determine that a UE is attached to this base station;

[0032] Determine the source base station from which the UE detaches;

[0033] Synchronize the data uploaded by the UE to the source base station through the X2 channel, and / or receive the data synchronized by the source base station through the X2 channel;

[0034] A transceiver for receiving and sending data under the control of the processor.

[0035] In implementation, the data uploaded by the UE is the Internet data uploaded by the UE to the ISP.

[0036] In implementation, after receiving the Internet data sent by the ISP to the UE synchronized by the source base station through the X2 channel, it further includes:

[0037] Send the Internet data synchronized by the source base station through the X2 channel to the UE.

[0038] In an embodiment of the present invention, a data transmission device is provided. The base station where the device is located is a base station with partial core network functions, including:

[0039] A first source base station determination module for determining that an affiliated UE has detached;

[0040] A second source base station determination module for determining the destination base station to which the UE is attached;

[0041] A source base station transmission module for synchronizing the data sent to the UE to the destination base station through the X2 channel, and / or receiving the data synchronized by the destination base station through the X2 channel.

[0042] In an embodiment of the present invention, a data transmission device is provided. The base station where the device is located is a base station with partial core network functions, including:

[0043] A first destination base station determination module for determining that a UE is attached to this base station;

[0044] A second destination base station determination module for determining the source base station from which the UE detaches;

[0045] A destination base station transmission module for synchronizing the data uploaded by the UE to the source base station through the X2 channel, and / or receiving the data synchronized by the source base station through the X2 channel.

[0046] In an embodiment of the present invention, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program for the above data transmission method.

[0047] The beneficial effects of the present invention are as follows:

[0048] In the technical solution provided in the embodiment of the present invention, since the source independent base station is used as the data forwarding anchor point, it is possible to support the UE to switch between multiple independent base stations, ensure seamless handover of the UE between independent base stations, and guarantee service continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation to the present invention. In the drawings:

[0050] Figure 1 is a schematic diagram of the network structure in the background art;

[0051] Figure 2 is a schematic diagram of the implementation process of the data transmission method on the source base station side in the embodiment of the present invention;

[0052] Figure 3 is a schematic diagram of the implementation process of the data transmission method on the target base station side in the embodiment of the present invention;

[0053] Figure 4 is a schematic diagram of the downlink data transmission process in Embodiment 1 of the present invention;

[0054] Figure 5 is a schematic diagram of the uplink data transmission process in Embodiment 2 of the present invention;

[0055] Figure 6 is a schematic diagram of the source base station structure in the embodiment of the present invention;

[0056] Figure 7 is a schematic diagram of the target base station structure in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0057] Currently, there is an independent base station that can be independently deployed, which integrates some core network functions internally and can support the normal operation of the base station without being interconnected with a dedicated EPC (Evolved Packet Core) device, and its functions are the same as those of a conventional base station;

[0058] SoftCN is a component of the so-called "partial core network functions". "Soft" means soft and lightweight, and "CN" stands for Core Network. SoftCN is a lightweight EPC component built into the independent base station, which includes all or part of the EPC components. It deploys some of the dedicated EPC functions in the form of software inside the HaloB base station and is co-located to support the independent operation of the HaloB base station.

[0059] There is at least one commercially available product on which an independent base station can be implemented, which is the HaloB base station from Beijing Bytedance Technology Co., Ltd. HaloB is a base station type product that can be independently deployed. "Halo" means "halo" and takes its beautiful meaning, and "B" is the abbreviation of BaseStation, that is, base station. However, note that although the discussions of the related invention and the present invention are all about independent base stations, the creative concepts are applicable to other types of base stations that provide similar functions and are also applicable to similar products other than base stations. Therefore, the reference to the HaloB base station is only for example and does not serve as a limitation.

[0060] In the embodiments of the present invention, the HaloB base station will be mainly used as an example for illustration.

[0061] Due to limitations in the deployment scenario, there is a lack of functionality in supporting the mobility of mobile terminals between HaloB base stations. Based on this, in the embodiments of the present invention, a handover scheme for terminals is provided to ensure seamless handover of the UE (User Equipment) between HaloB base stations when the HaloB base station supports mobility and to guarantee service continuity.

[0062] The OMC (Operation & Maintenance Center) is the remote management center of the base station, responsible for managing the HaloB base station and the UE devices accessing the base station, such as IP address allocation, etc., and also includes some EPC functions, such as the HSS (Home Subscriber Server) to manage user subscription information; SoftCN is a lightweight EPC component built into the HaloB base station, which includes all or part of the EPC components.

[0063] When there is an X2 connection between two base stations, the UE will perform X2-based handover when switching between the two base stations, and the signaling messages and data messages during the handover process are all transmitted through the X2 tunnel to ensure service continuity during the handover process.

[0064] For the X2 handover between HaloB base stations, since it involves the handover of the MME (Mobility Management Entity) / SGW (Serving Gateway), it is necessary to use the source HaloB base station as the anchor point for Internet data transmission, modify the routing so that the data is transmitted to the UE through the destination HaloB base station.

[0065] The following will describe the specific implementation manners of the present invention with reference to the accompanying drawings.

[0066] During the description process, the implementation will be described separately from the source base station side and the destination base station side, and the UE will be involved according to the implementation needs, and examples of their cooperative implementation will also be given to better understand the implementation of the solution given in the embodiments of the present invention. Such a description method does not mean that they must be cooperatively implemented or must be implemented separately. In fact, when the source base station side and the destination base station side are implemented separately, they also solve their own problems on their respective sides, and when they are used in combination, better technical effects will be obtained.

[0067] Figure 2 As a schematic diagram of the implementation process of the data transmission method on the source base station side, as shown in the figure, it may include:

[0068] Step 201, the base station determines that the affiliated UE has detached, and the base station is a base station with partial core network functions;

[0069] Step 202, the base station determines the destination base station to which the UE attaches;

[0070] Step 203, the base station synchronizes the data sent to the UE to the destination base station through the X2 channel, and / or, the base station receives the data synchronized by the destination base station through the X2 channel.

[0071] In the implementation, the data sent to the UE is the Internet data sent by the ISP to the UE.

[0072] In the implementation, the data synchronized by the destination base station through the X2 channel is the Internet data uploaded by the UE to the ISP, and further includes:

[0073] The base station uploads the Internet data synchronized by the destination base station through the X2 channel to the ISP.

[0074] Figure 3 As a schematic diagram of the implementation process of the data transmission method on the destination base station side, as shown in the figure, it may include:

[0075] Step 301, the base station determines that a UE attaches to this base station, and the base station is a base station with partial core network functions;

[0076] Step 302: The base station determines the source base station from which the UE detaches.

[0077] Step 303: The base station synchronizes the data uploaded by the UE to the source base station through the X2 interface, and / or the base station receives the data synchronized by the source base station through the X2 interface.

[0078] In implementation, the data uploaded by the UE is the Internet data uploaded by the UE to the ISP.

[0079] In implementation, after the base station receives the Internet data sent by the ISP to the UE and synchronized by the source base station through the X2 interface, it further includes:

[0080] The base station sends the Internet data synchronized by the source base station through the X2 interface to the UE.

[0081] By supporting this function and using the source base station as the data forwarding anchor point, the base station can support the UE to switch between multiple base stations, ensure seamless handover of the UE between base stations, and guarantee service continuity.

[0082] The following is an example for illustration.

[0083] Embodiment 1

[0084] In this example, the transmission of downlink data is described.

[0085] Figure 4 For the schematic diagram of the downlink data transmission process in Embodiment 1, as shown in the figure, it can be as follows:

[0086] 1. Before handover:

[0087] The Internet data is sent to the UE through the radio bearer on the source HaloB base station side.

[0088] 2. The UE detaches from the source HaloB:

[0089] The downlink channel between the ISP (Internet Service Provider) and the source HaloB remains unchanged, and the Internet data continues to be sent to the source HaloB base station. However, since the UE has detached from the source HaloB base station and has not completed the attachment to the target HaloB base station, the Internet data is synchronized to the target HaloB base station through the X2 interface for caching.

[0090] 3. The UE attaches to the target HaloB:

[0091] There is no downlink data transmission route between the ISP and the destination HaloB base station, and the downlink channel between the ISP and the source HaloB remains unchanged. Therefore, Internet data continues to be sent to the source Halo base station, and the source HaloB base station sends the downlink data to the destination HaloB base station through the X2 tunnel. The UE has completed the attachment to the destination Halo base station, so the data can be sent to the UE through the radio bearer between the destination HaloB base station and the UE.

[0092] Embodiment 2

[0093] In this example, the transmission of uplink data is described.

[0094] Figure 5 It is a schematic diagram of the uplink data transmission process in Embodiment 2. As shown in the figure, it can be as follows:

[0095] 1. Before handover:

[0096] The UE uploads the uplink data to the ISP through the source HaloB base station;

[0097] 2. The UE detaches from the source HaloB:

[0098] The uplink channel between the source HaloB base station and the ISP remains unchanged. After the UE detaches, it continues to send the previously unsent uplink data to the ISP;

[0099] 3. The UE attaches to the destination HaloB:

[0100] The UE sends the uplink data to the destination HaloB base station through the radio bearer established with the destination HaloB base station. Since there is no uplink route established between the destination HaloB base station and the ISP, the uplink data is transmitted to the source HaloB base station through the X2 tunnel and uploaded to the ISP through the source HaloB base station.

[0101] Based on the same inventive concept, base stations, data transmission devices, and computer-readable storage media are also provided in the embodiments of the present invention. Since the principles of these devices for solving problems are similar to those of the data transmission method, the implementation of these devices can refer to the implementation of the method, and the repeated parts will not be elaborated.

[0102] When implementing the technical solutions provided in the embodiments of the present invention, it can be implemented in the following manner.

[0103] Figure 6 It is a schematic diagram of the source base station structure. The base station is a base station with some core network functions. As shown in the figure, the base station includes:

[0104] A processor 600, configured to read the program in the memory 620 and execute the following processes:

[0105] The UE whose affiliation is determined has detached;

[0106] Determine the target base station to which the UE is attached;

[0107] Synchronize the data sent to the UE to the target base station through the X2 channel, and / or receive the data synchronized by the target base station through the X2 channel;

[0108] The transceiver 610 is used to receive and send data under the control of the processor 600.

[0109] In implementation, the data sent to the UE is the Internet data issued by the ISP to the UE.

[0110] In implementation, the data synchronized by the target base station through the X2 channel is the Internet data uploaded by the UE to the ISP, and further includes:

[0111] Upload the Internet data synchronized by the target base station through the X2 channel to the ISP.

[0112] Among them, in Figure 6 The bus architecture may include any number of interconnected buses and bridges, specifically, various circuits of one or more processors represented by the processor 600 and the memory represented by the memory 620 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, so they will not be further described herein. The bus interface provides an interface. The transceiver 610 may be multiple components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on the transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store the data used by the processor 600 when executing operations.

[0113] In an embodiment of the present invention, a data transmission device is provided. The base station where the device is located is a base station with partial core network functions, and includes:

[0114] The first determination module of the source base station is used to determine that the affiliated UE has detached;

[0115] The second determination module of the source base station is used to determine the target base station to which the UE is attached;

[0116] The transmission module of the source base station is used to synchronize the data sent to the UE to the target base station through the X2 channel, and / or receive the data synchronized by the target base station through the X2 channel.

[0117] Specifically, reference may be made to the implementation of the data transmission method on the source base station side.

[0118] For convenience of description, each part of the above-described device is functionally divided into various modules or units and described separately. Of course, when implementing the present invention, the functions of the modules or units can be implemented in the same or multiple software or hardware.

[0119] Figure 7 It is a schematic diagram of the target base station structure. The base station is a base station with some core network functions. As shown in the figure, the base station includes:

[0120] A processor 700, configured to read a program in a memory 720 and execute the following processes:

[0121] Determine that a UE is attached to this base station;

[0122] Determine the source base station from which the UE detaches;

[0123] Synchronize the data uploaded by the UE to the source base station through the X2 channel, and / or receive the data synchronized by the source base station through the X2 channel;

[0124] A transceiver 710, configured to receive and send data under the control of the processor 700.

[0125] In implementation, the data uploaded by the UE is the Internet data uploaded by the UE to the ISP.

[0126] In implementation, after receiving the Internet data sent by the ISP to the UE and synchronized by the source base station through the X2 channel, it further includes:

[0127] Send the Internet data synchronized by the source base station through the X2 channel to the UE.

[0128] Among them, in Figure 7 The bus architecture may include any number of interconnected buses and bridges, specifically various circuits of one or more processors represented by the processor 700 and the memory represented by the memory 720 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art. Therefore, they will not be further described herein. The bus interface provides an interface. The transceiver 710 may be multiple components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on the transmission medium. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store the data used by the processor 700 when executing operations.

[0129] In an embodiment of the present invention, a data transmission device is provided. The base station where the device is located is a base station with some core network functions, and includes:

[0130] The destination base station's first determination module is used to determine that a UE is attached to this base station;

[0131] The destination base station's second determination module is used to determine the source base station from which the UE detaches;

[0132] The destination base station's transmission module is used to synchronize the data uploaded by the UE to the source base station through the X2 interface, and / or receive the data synchronized by the source base station through the X2 interface.

[0133] Specifically, reference can be made to the implementation of the data transmission method on the destination base station side.

[0134] For the convenience of description, each part of the above-described device is described separately as various modules or units according to functions. Of course, when implementing the present invention, the functions of the various modules or units can be implemented in the same or multiple software or hardware.

[0135] An embodiment of the present invention provides a computer-readable storage medium, and the computer-readable storage medium stores a computer program for the above data transmission method.

[0136] Specifically, reference can be made to the implementation of the data transmission method on the source base station side and / or the destination base station side.

[0137] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0138] The present invention is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the specified functions in one Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0139] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means that implement the function specified in one or more of the processes and / or blocks Figure 1 one or more of the processes and / or blocks Figure 1 specified in the block or blocks.

[0140] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the function specified in one or more of the processes and / or blocks Figure 1 one or more of the processes and / or blocks Figure 1 specified in the block or blocks.

[0141] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A data transmission method, characterized in that, Including: The base station determines that the user equipment (UE) to which it belongs has detached, and the base station is a base station with partial core network functions; The base station determines the target base station to which the UE attaches; The base station synchronizes the data sent to the UE to the target base station through the X2 interface, and / or, the base station receives the data synchronized by the target base station through the X2 interface; Among them, the data sent to the UE is the Internet data sent by the Internet service provider (ISP) to the UE; The data synchronized by the target base station through the X2 interface is the Internet data uploaded by the UE to the ISP.

2. The method according to claim 1, characterized in that, Further including: The base station uploads the Internet data synchronized by the target base station through the X2 interface to the ISP.

3. A data transmission method, characterized in that, Including: The base station determines that a UE attaches to this base station, and the base station is a base station with partial core network functions; The base station determines the source base station from which the UE detaches; The base station synchronizes the data uploaded by the UE to the source base station through the X2 interface, and / or, the base station receives the data synchronized by the source base station through the X2 interface; Among them, the data uploaded by the UE is the Internet data uploaded by the UE to the ISP; The data synchronized by the base station through the X2 interface is the Internet data sent by the ISP to the UE.

4. A base station, characterized in that, The base station is a base station with partial core network functions, including: A processor, configured to read a program in a memory and execute the following processes: Determine that the UE to which it belongs has detached; Determine the target base station to which the UE attaches; Synchronize the data sent to the UE to the target base station through the X2 interface, and / or, receive the data synchronized by the target base station through the X2 interface; A transceiver, configured to receive and send data under the control of the processor; Among them, the data sent to the UE is the Internet data sent by the Internet service provider (ISP) to the UE; The data synchronized by the target base station through the X2 interface is the Internet data uploaded by the UE to the ISP.

5. A base station, characterized in that, The base station is a base station with partial core network functions, including: A processor, configured to read a program in a memory and execute the following processes: Determine that a UE attaches to this base station; Determine the source base station from which the UE detaches; Synchronize the data uploaded by the UE to the source base station through the X2 interface, and / or, receive the data synchronized by the source base station through the X2 interface; A transceiver, configured to receive and send data under the control of the processor; Among them, the data uploaded by the UE is the Internet data uploaded by the UE to the ISP; The data synchronized by the base station through the X2 interface is the Internet data sent by the ISP to the UE.

6. A data transmission device, characterized in that, The base station where the device is located is a base station with partial core network functions, including: A source base station first determination module, configured to determine that the UE to which it belongs has detached; A source base station second determination module, configured to determine the target base station to which the UE attaches; A source base station transmission module, configured to synchronize the data sent to the UE to the target base station through the X2 interface, and / or, receive the data synchronized by the target base station through the X2 interface; Among them, the data sent to the UE is Internet data sent by an Internet service provider (ISP) to the UE. The data synchronized by the target base station through the X2 channel is the Internet data uploaded by the UE to the ISP.

7. A data transmission device, characterized in that, The base station where the device is located is a base station with some core network functions, including: A target base station first determination module, configured to determine that a UE is attached to this base station. A target base station second determination module, configured to determine the source base station from which the UE detaches. A target base station transmission module, configured to synchronize the data uploaded by the UE to the source base station through the X2 channel, and / or receive the data synchronized by the source base station through the X2 channel. Among them, the data uploaded by the UE is the Internet data uploaded by the UE to the ISP. The data synchronized by the base station through the X2 channel is the Internet data sent by the ISP to the UE.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program for executing the method according to any one of claims 1 to 3.

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