CN113810970A - Data transmission method, base station, device and medium - Google Patents

Data transmission method, base station, device and medium Download PDF

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Publication number
CN113810970A
CN113810970A CN202010546954.8A CN202010546954A CN113810970A CN 113810970 A CN113810970 A CN 113810970A CN 202010546954 A CN202010546954 A CN 202010546954A CN 113810970 A CN113810970 A CN 113810970A
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China
Prior art keywords
base station
data
channel
source
target
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Pending
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CN202010546954.8A
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Chinese (zh)
Inventor
孙立新
周明宇
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Baicells Technologies Co Ltd
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Baicells Technologies Co Ltd
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Application filed by Baicells Technologies Co Ltd filed Critical Baicells Technologies Co Ltd
Priority to CN202010546954.8A priority Critical patent/CN113810970A/en
Publication of CN113810970A publication Critical patent/CN113810970A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Abstract

The invention discloses a data transmission method, a base station, a device and a medium, comprising the following steps: a base station determines that the user equipment which belongs to is detached, wherein the base station is a base station with a part of core network functions; the base station synchronizes the data sent to the user equipment to the target base station through an X2 channel, and/or the base station receives the data synchronized by the target base station through an X2 channel. The base station determines that the user equipment is attached to the base station; the base station synchronizes the data uploaded by the user equipment to the source base station through an X2 channel, and/or the base station receives the data synchronized by the source base station through an X2 channel. The invention can support the user equipment to switch among a plurality of base stations, ensure the user equipment to complete seamless switching among the base stations and ensure the service continuity.

Description

Data transmission method, base station, device and medium
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method, a base station, an apparatus, and a medium.
Background
At present, there exists an independent base station which can be deployed independently, and a part of Core network functions are integrated in the independent base station, so that the base station can work normally even without being interconnected with special EPC (Evolved Packet Core) equipment, and the functions of the base station are the same as those of a conventional base station;
fig. 1 is a schematic diagram of a network structure, as shown in the figure, an independent base station is an LTE (Long Term Evolution) base station device with a distributed control plane, an EPC function is deployed at a base station side, and an LTE end-to-end networking deployment can be implemented by a single independent base station.
The prior art is not enough to provide the mobile terminal with the function lack of mobility support between independent base stations due to the limitation of the deployment scenario.
Disclosure of Invention
The invention provides a data transmission method, a base station, a device and a medium, which are used for solving the problem that a mobile terminal does not have mobility support between independent base stations.
The embodiment of the invention provides a data transmission method, which comprises the following steps:
a base station determines that the affiliated UE is detached, wherein the base station is a base station with a part of core network functions;
the base station determines a target base station to which the UE is attached;
the base station synchronizes the data transmitted to the UE to the target base station through the X2 channel, and/or the base station receives the data synchronized by the target base station through the X2 channel.
In implementation, the data sent to the UE is Internet data sent to the UE by the ISP.
In an implementation, the data synchronized by the destination base station through the X2 channel is Internet data uploaded to the ISP by the UE, and further includes:
the base station uploads the Internet data synchronized by the destination base station through the X2 channel to the ISP.
The embodiment of the invention provides a data transmission method, which comprises the following steps:
a base station determines that UE is attached to the base station, wherein the base station is a base station with a part of core network functions;
the base station determines a source base station to which the UE is detached;
the base station synchronizes the data uploaded by the UE to the source base station through an X2 channel, and/or the base station receives the data synchronized by the source base station through an X2 channel.
In an implementation, the data uploaded by the UE is Internet data uploaded to the ISP by the UE.
In an implementation, after the base station receives Internet data sent to the UE by an ISP synchronized by a source base station through an X2 channel, the method further includes:
and the base station transmits the Internet data synchronized by the source base station through an X2 channel to the UE.
The embodiment of the invention provides a base station, which is a base station with partial core network function, and comprises:
a processor for reading the program in the memory, performing the following processes:
determining that a home UE has detached;
determining a target base station to which the UE is attached;
synchronizing data transmitted to the UE to a target base station through an X2 channel, and/or receiving data synchronized by the target base station through an X2 channel;
a transceiver for receiving and transmitting data under the control of the processor.
In implementation, the data sent to the UE is Internet data sent to the UE by the ISP.
In an implementation, the data synchronized by the destination base station through the X2 channel is Internet data uploaded to the ISP by the UE, and further includes:
the Internet data synchronized by the destination base station through the X2 channel is uploaded to the ISP.
The embodiment of the invention provides a base station, which is a base station with partial core network function, and comprises:
a processor for reading the program in the memory, performing the following processes:
determining that the UE is attached to the base station;
determining a source base station to which the UE is detached;
synchronizing data uploaded by the UE to a source base station through an X2 channel, and/or receiving data synchronized by the source base station through an X2 channel;
a transceiver for receiving and transmitting data under the control of the processor.
In an implementation, the data uploaded by the UE is Internet data uploaded to the ISP by the UE.
In an implementation, after receiving Internet data sent to the UE by an ISP synchronized by a source base station through an X2 channel, the method further includes:
and transmitting the Internet data synchronized by the source base station through an X2 channel to the UE.
The embodiment of the invention provides a data transmission device, wherein a base station on which the device is positioned is a base station with a part of core network functions, and the device comprises:
a first determining module of a source base station, configured to determine that a home UE has detached;
a second determining module of the source base station, configured to determine a destination base station to which the UE is attached;
and the source base station transmission module is used for synchronizing the data sent to the UE to the target base station through an X2 channel and/or receiving the data synchronized by the target base station through an X2 channel.
The embodiment of the invention provides a data transmission device, wherein a base station on which the device is positioned is a base station with a part of core network functions, and the device comprises:
a first determining module of the target base station, configured to determine that the UE is attached to the base station;
a second determining module of the destination base station, configured to determine a source base station to which the UE is detached;
and the destination base station transmission module is used for synchronizing the data uploaded by the UE to the source base station through an X2 channel and/or receiving the data synchronized by the source base station through an X2 channel.
The embodiment of the invention provides a computer readable storage medium, and the computer readable storage medium stores a computer program of the data transmission method.
The invention has the following beneficial effects:
according to the technical scheme provided by the embodiment of the invention, the source independent base station is used as the data forwarding anchor point, so that the UE can be switched among a plurality of independent base stations, the UE is ensured to complete seamless switching among the independent base stations, and the service continuity is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a network architecture in the background art;
fig. 2 is a schematic flow chart illustrating an implementation of a data transmission method at a source base station side according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating an implementation of a data transmission method at a destination base station side according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a downlink data transmission flow in embodiment 1 of the present invention;
fig. 5 is a schematic diagram of an uplink data transmission flow in embodiment 2 of the present invention;
FIG. 6 is a diagram illustrating a source base station according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a target base station according to an embodiment of the present invention.
Detailed Description
At present, there exists an independent base station which can be deployed independently, and a part of Core network functions are integrated in the independent base station, so that the base station can work normally even without being interconnected with special EPC (Evolved Packet Core) equipment, and the functions of the base station are the same as those of a conventional base station;
SoftCN is a component of the "partial core network function", Soft is a Soft and lightweight, and CN is core network; the SoftCN is a lightweight EPC component built in the standalone base station, and includes all or part of EPC components, and deploys the functions of part of special EPC in the interior of the HaloB base station in a software manner, and deploys in the same station, so as to support the HaloB base station to work independently.
There is at least one commercially available base station on which to implement a stand-alone base station, a HaloB base station from bekka technologies ltd, beijing, bai bong, where the HaloB is a base station type product that can be deployed independently; halo takes meaning of "Halo", its good connotation, B is the abbreviation of base station; it is noted, however, that although the discussion of the related inventions and the present inventions are with respect to stand-alone base stations, the inventive concepts are applicable to other types of base stations that provide similar functionality, and also to similar products other than base stations, and thus reference to a HaloB base station is by way of example only and not by way of limitation.
In the embodiments of the present invention, a HaloB base station will be mainly used as an example for description.
Due to the limitation of the deployment scenario, there is a loss of functionality for the mobile terminal in the mobility support between the HaloB base stations. Based on this, the embodiment of the present invention provides a terminal handover scheme, so as to ensure that a User Equipment (UE) performs seamless handover between the HaloB base stations when the HaloB base stations support mobility, thereby ensuring service continuity.
An OMC (Operation and Maintenance Center) is a base station remote management Center, and is responsible for managing a HaloB base station and UE equipment accessing the base station, such as IP address allocation, and also includes a function of a part of EPC, such as an HSS (Home Subscriber Server) to manage user subscription information; SoftCN is a lightweight EPC component built into a HaloB base station, containing all or part of the EPC components.
When X2 connection exists between two base stations, the UE performs X2 mode switching when switching between the two base stations, and signaling messages and data messages in the switching process are transmitted through an X2 tunnel, so that the service continuity in the switching process is guaranteed.
X2 handover between HaloB base stations, which involves handover of MME (Mobility Management Entity)/SGW (Serving Gateway), requires modification of routing by means of the source HaloB base station as an anchor point for Internet data transmission so that data is transmitted to the UE through the destination HaloB base station.
The following describes embodiments of the present invention with reference to the drawings.
In the description process, the implementation from the source base station side and the destination base station side will be described separately, and UE will be involved according to the implementation requirement, and an example of their cooperative implementation will be given to better understand the implementation of the scheme given in the embodiment of the present invention. Such description does not mean that they must be implemented in cooperation or separately, and actually, when the source base station side and the destination base station side are implemented separately, they also solve the problem of their own side individually, and when they are used in combination, a better technical effect is obtained.
Fig. 2 is a schematic flow chart of an implementation of a data transmission method at a source base station side, as shown in the figure, the implementation may include:
step 201, a base station determines that a home UE is detached, wherein the base station is a base station with a part of core network functions;
step 202, the base station determines a target base station to which the UE is attached;
and 203, the base station synchronizes the data sent to the UE to the target base station through an X2 channel, and/or the base station receives the data synchronized by the target base station through an X2 channel.
In implementation, the data sent to the UE is Internet data sent to the UE by the ISP.
In an implementation, the data synchronized by the destination base station through the X2 channel is Internet data uploaded to the ISP by the UE, and further includes:
the base station uploads the Internet data synchronized by the destination base station through the X2 channel to the ISP.
Fig. 3 is a schematic flow chart of an implementation of a data transmission method at a destination base station side, as shown in the figure, the method may include:
step 301, a base station determines that a UE is attached to the base station, wherein the base station is a base station with a part of core network functions;
step 302, the base station determines a source base station to which the UE is detached;
step 303, the base station synchronizes the data uploaded by the UE to the source base station through an X2 channel, and/or the base station receives the data synchronized by the source base station through an X2 channel.
In an implementation, the data uploaded by the UE is Internet data uploaded to the ISP by the UE.
In an implementation, after the base station receives Internet data sent to the UE by an ISP synchronized by a source base station through an X2 channel, the method further includes:
and the base station transmits the Internet data synchronized by the source base station through an X2 channel to the UE.
The base station can support the UE to switch among a plurality of base stations by supporting the function and taking the source base station as a data forwarding anchor point, thereby ensuring that the UE completes seamless switching among the base stations and ensuring the service continuity.
The following is an example.
Example 1
In this example, transmission of downlink data is explained.
Fig. 4 is a schematic diagram of a downlink data transmission flow in embodiment 1, as shown in the figure, the flow may be as follows:
1. before switching:
internet data is issued to UE through a source HaloB base station side wireless bearer;
2. UE detach from source HaloB:
the downlink channel between the ISP (Internet Service Provider) and the source HaloB is not changed, the Internet data is continuously transmitted to the source HaloB base station, but the UE is already attached from the source HaloB base station and is not yet attached to the target HaloB base station, so the Internet data is synchronously cached to the target HaloB base station through an X2 channel;
3. UE attachment to destination HaloB:
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 is not changed, so the Internet data is continuously sent to the source HaloB base station, 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 with the destination HaloB base station, and thus the data can be sent to the UE through the radio bearer between the destination HaloB base station and the UE.
Example 2
In this example, transmission of uplink data will be described.
Fig. 5 is a schematic diagram of an uplink data transmission flow in embodiment 2, as shown in the figure, the following may be used:
1. before switching:
the UE uploads uplink data to the ISP through the source HaloB base station;
2. UE detach from source HaloB:
an uplink channel between a source HaloB base station and an ISP is not changed, and after the UE is detached, uplink data which are not sent before are continuously sent to the ISP;
3. UE attachment to destination HaloB:
and the UE sends uplink data to the destination HaloB base station through a radio bearer established between the UE and the destination HaloB base station, and because an uplink route is not established between the destination HaloB base station and the ISP, the uplink data is transmitted to the source HaloB base station through an X2 tunnel and is uploaded to the ISP through the source HaloB base station.
Based on the same inventive concept, the embodiment of the present invention further provides a base station, a data transmission apparatus, and a computer-readable storage medium, and because the principles of these devices for solving the problems are similar to the data transmission method, the implementation of these devices may refer to the implementation of the method, and repeated details are not repeated.
When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.
Fig. 6 is a schematic structural diagram of a source base station, where the base station is a base station with a function of a part of a core network, and as shown in the figure, the base station includes:
the processor 600, which is used to read the program in the memory 620, executes the following processes:
determining that a home UE has detached;
determining a target base station to which the UE is attached;
synchronizing data transmitted to the UE to a target base station through an X2 channel, and/or receiving data synchronized by the target base station through an X2 channel;
a transceiver 610 for receiving and transmitting data under the control of the processor 600.
In implementation, the data sent to the UE is Internet data sent to the UE by the ISP.
In an implementation, the data synchronized by the destination base station through the X2 channel is Internet data uploaded to the ISP by the UE, and further includes:
the Internet data synchronized by the destination base station through the X2 channel is uploaded to the ISP.
Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.
The embodiment of the invention provides a data transmission device, wherein a base station on which the device is positioned is a base station with a part of core network functions, and the device comprises:
a first determining module of a source base station, configured to determine that a home UE has detached;
a second determining module of the source base station, configured to determine a destination base station to which the UE is attached;
and the source base station transmission module is used for synchronizing the data sent to the UE to the target base station through an X2 channel and/or receiving the data synchronized by the target base station through an X2 channel.
See in particular the implementation of the data transmission method at the source base station side.
For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.
Fig. 7 is a schematic structural diagram of a target base station, where the base station is a base station with a function of a part of a core network, and as shown in the figure, the base station includes:
the processor 700, which is used to read the program in the memory 720, executes the following processes:
determining that the UE is attached to the base station;
determining a source base station to which the UE is detached;
synchronizing data uploaded by the UE to a source base station through an X2 channel, and/or receiving data synchronized by the source base station through an X2 channel;
a transceiver 710 for receiving and transmitting data under the control of the processor 700.
In an implementation, the data uploaded by the UE is Internet data uploaded to the ISP by the UE.
In an implementation, after receiving Internet data sent to the UE by an ISP synchronized by a source base station through an X2 channel, the method further includes:
and transmitting the Internet data synchronized by the source base station through an X2 channel to the UE.
Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.
The embodiment of the invention provides a data transmission device, wherein a base station on which the device is positioned is a base station with a part of core network functions, and the device comprises:
a first determining module of the target base station, configured to determine that the UE is attached to the base station;
a second determining module of the destination base station, configured to determine a source base station to which the UE is detached;
and the destination base station transmission module is used for synchronizing the data uploaded by the UE to the source base station through an X2 channel and/or receiving the data synchronized by the source base station through an X2 channel.
Specifically, refer to the implementation of the data transmission method at the destination base station side.
For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.
The embodiment of the invention provides a computer readable storage medium, and the computer readable storage medium stores a computer program of the data transmission method.
The implementation of the data transmission method at the source base station side and/or the destination base station side may be specifically referred to.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may 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 which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may 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 such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations 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 such modifications and variations.

Claims (10)

1. A method of data transmission, comprising:
a base station determines that a User Equipment (UE) which belongs to the base station is detached, wherein the base station has a part of core network functions;
the base station determines a target base station to which the UE is attached;
the base station synchronizes the data transmitted to the UE to the target base station through the X2 channel, and/or the base station receives the data synchronized by the target base station through the X2 channel.
2. The method of claim 1, wherein the data transmitted to the UE is Internet data delivered to the UE by an Internet service provider ISP.
3. The method of claim 1, wherein the data synchronized by the destination base station through the X2 channel is Internet data uploaded by the UE to the ISP, further comprising:
the base station uploads the Internet data synchronized by the destination base station through the X2 channel to the ISP.
4. A method of data transmission, comprising:
a base station determines that UE is attached to the base station, wherein the base station is a base station with a part of core network functions;
the base station determines a source base station to which the UE is detached;
the base station synchronizes the data uploaded by the UE to the source base station through an X2 channel, and/or the base station receives the data synchronized by the source base station through an X2 channel.
5. The method of claim 4, wherein the data uploaded by the UE is Internet data uploaded by the UE to an ISP.
6. A base station, wherein the base station is a base station having a function of a part of a core network, comprising:
a processor for reading the program in the memory, performing the following processes:
determining that a home UE has detached;
determining a target base station to which the UE is attached;
synchronizing data transmitted to the UE to a target base station through an X2 channel, and/or receiving data synchronized by the target base station through an X2 channel;
a transceiver for receiving and transmitting data under the control of the processor.
7. A base station, wherein the base station is a base station having a function of a part of a core network, comprising:
a processor for reading the program in the memory, performing the following processes:
determining that the UE is attached to the base station;
determining a source base station to which the UE is detached;
synchronizing data uploaded by the UE to a source base station through an X2 channel, and/or receiving data synchronized by the source base station through an X2 channel;
a transceiver for receiving and transmitting data under the control of the processor.
8. A data transmission apparatus, wherein a base station in which the apparatus is located is a base station having a function of a part of a core network, comprising:
a first determining module of a source base station, configured to determine that a home UE has detached;
a second determining module of the source base station, configured to determine a destination base station to which the UE is attached;
and the source base station transmission module is used for synchronizing the data sent to the UE to the target base station through an X2 channel and/or receiving the data synchronized by the target base station through an X2 channel.
9. A data transmission apparatus, wherein a base station in which the apparatus is located is a base station having a function of a part of a core network, comprising:
a first determining module of the target base station, configured to determine that the UE is attached to the base station;
a second determining module of the destination base station, configured to determine a source base station to which the UE is detached;
and the destination base station transmission module is used for synchronizing the data uploaded by the UE to the source base station through an X2 channel and/or receiving the data synchronized by the source base station through an X2 channel.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 5.
CN202010546954.8A 2020-06-16 2020-06-16 Data transmission method, base station, device and medium Pending CN113810970A (en)

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Application Number Priority Date Filing Date Title
CN202010546954.8A CN113810970A (en) 2020-06-16 2020-06-16 Data transmission method, base station, device and medium

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Publication Number Publication Date
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