CN108810903B - Data transmission configuration and data transmission method and device - Google Patents

Abstract

The invention discloses a data transmission configuration and a data transmission method and device, which are used to realize the logical isolation of network slice resources on the access network side. The data transmission configuration method includes: for a service data stream to be transmitted, determining a QoS policy and a network slice corresponding to the service data stream; adding a network slice to the service data stream according to the network slice corresponding to the service data stream and according to the determined QoS policy, map the service data flow after adding the network slice identifier to the wireless data bearer established for the QoS policy for transmission.

Description

A data transmission configuration and data transmission method and device

technical field

The present invention relates to the technical field of wireless communication, and in particular, to a data transmission configuration and a data transmission method and device.

Background technique

This section is intended to provide a background or context for the embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section.

Network slicing is a relatively new concept in the field of wireless communications. The concept of network slicing of the core network has reached a certain degree of consensus in the industry. The network slicing of the core network refers to the customized implementation of network requirements after selecting and combining different network function modules according to the characteristics of business and service requirements.

For a wireless network, the wireless network provides wireless signal coverage services, and the sending and receiving of wireless signals is implemented by an RRU (Radio Remote Unit, remote radio unit) with a fixed relative position. Similar to the core network, the coverage communication capability provided by the wireless network is also a business requirement. Users can request operators to customize different coverage networks to achieve special services according to their wireless coverage requirements.

A network slice instance is a logical concept in the sense of network operation. Different network slice instances meet different user customization requirements or network deployment requirements. Different network slice instances have different functions and resources, and some functions and resources can be shared among different network slice instances. , and can monopolize all resources in extreme cases. Currently, the access network can select a core network supporting this network slice for the user equipment (UE) according to the network slice selection assistance information (NSSAI). On the core network side, network slices can be isolated by PDU (Protocol Data Unit, Protocol Data Unit) sessions (sessions). Each PDU session can only belong to a certain network slice, and two network slices cannot use the same PDU session. However, on the access network side, the base station cannot identify the correspondence between QoS (Quality of Service) flows, radio bearers, and network slices, so the access network side cannot implement logical isolation of network slice resources.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a data transmission method and apparatus, which are used to implement logical isolation of network slice resources on the access network side.

An embodiment of the present invention provides a data transmission configuration method, including:

For the service data flow to be transmitted, determine the QoS policy and network slice corresponding to the service data flow;

adding a network slice identifier to the service data stream according to the network slice corresponding to the service data stream; and

According to the determined QoS policy, the service data flow added with the network slice identifier is mapped to the wireless data bearer established for the QoS policy for transmission.

Preferably, the network slice identifier is used to instruct the wireless access network device to determine, according to the network slice identifier, a network slice corresponding to the service data stream to be transmitted to allocate wireless transmission resources to the service data stream to be transmitted, so as to allocate wireless transmission resources to the service data stream to be transmitted. The wireless transmission resources of network slicing are isolated.

Preferably, the network slice identifier is used to instruct the user equipment UE to map the received service data stream to a corresponding network slice according to the network slice identifier when receiving the service data stream, so as to perform processing on different network slices. Processing resources are isolated.

Optionally, according to the determined QoS policy, when the service data flow added with the network slice identifier is mapped to the wireless data bearer established for the QoS policy and sent, the method further includes:

Determine the network slice identifier corresponding to the wireless data bearer according to the correspondence between the service data stream and the wireless data bearer; or

A network slice identifier is reassigned to the wireless data bearer.

An embodiment of the present invention provides a data transmission method implemented on a wireless network side, including:

Use the wireless data bearer established with the core network equipment to receive the service data stream to be transmitted;

According to the network slice identifier corresponding to the wireless data bearer, wireless transmission resources are allocated to the service data flow to be transmitted, so as to isolate the wireless transmission resources of different network slices.

Preferably, the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream; and

Determine the network slice identifier corresponding to the wireless data bearer according to the following method:

It is determined that the network slice identifier carried by the service data stream is the network slice identifier corresponding to the wireless data bearer.

Optionally, before using the wireless data bearer established with the core network device to receive the service data stream to be transmitted, the method further includes:

A network slice identifier allocated by the core network device for the wireless data bearer is received.

An embodiment of the present invention provides a data transmission method implemented by a UE, including:

receiving a service data stream, where the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream;

According to the network slice identifier, the received service data stream is mapped to the corresponding network slice for processing, so as to isolate the processing resources of different network slices.

An embodiment of the present invention provides a data transmission configuration device, including:

a first determining unit, configured to determine the QoS policy and network slice corresponding to the service data flow for the service data flow to be transmitted;

An adding unit, configured to add a network slice identifier to the service data stream according to the network slice corresponding to the service data stream;

The mapping unit is configured to map, according to the determined QoS policy, the service data flow added with the network slice identifier to the wireless data bearer established for the QoS policy for transmission.

Preferably, the network slice identifier is used to instruct the wireless access network device to determine, according to the network slice identifier, a network slice corresponding to the service data stream to be transmitted to allocate wireless transmission resources to the service data stream to be transmitted, so as to allocate wireless transmission resources to the service data stream to be transmitted. The wireless transmission resources of network slices are isolated.

Preferably, the network slice identifier is used to instruct the user equipment UE to map the received service data stream to a corresponding network slice according to the network slice identifier when receiving the service data stream, so as to perform processing on different network slices. Processing resources are isolated.

Optionally, the data transmission configuration method provided by the embodiment of the present invention further includes:

a second determining unit, configured to determine the network slice identifier corresponding to the wireless data bearer according to the correspondence between the service data stream and the wireless data bearer; or

an allocation unit, configured to reallocate a network slice identifier to the wireless data bearer.

An embodiment of the present invention provides a data transmission device implemented on a wireless access network side, including:

a first receiving unit, configured to receive the service data stream to be transmitted by using the wireless data bearer established with the core network device;

The allocation unit is configured to allocate wireless transmission resources to the service data flow to be transmitted according to the network slice identifier corresponding to the wireless data bearer, so as to isolate the wireless transmission resources of different network slices.

Preferably, the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream; and

The data transmission device implemented on the wireless access network side further includes:

A determining unit, configured to determine that the network slice identifier carried by the service data stream is the network slice identifier corresponding to the wireless data bearer.

Optionally, the data transmission device implemented on the wireless access network side provided by the embodiment of the present invention further includes:

a second receiving unit, configured to receive the network allocated by the core network device for the wireless data bearer before the first receiving unit receives the service data stream to be transmitted by using the wireless data bearer established with the core network device Slice ID.

An embodiment of the present invention provides a data transmission device implemented on the UE side, including:

a receiving unit, configured to receive a service data stream, where the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream;

The mapping unit is configured to map the received service data stream to the corresponding network slice for processing according to the network slice identifier, so as to isolate the processing resources of different network slices.

In the data transmission configuration and the data transmission method and device provided by the embodiments of the present invention, by adding a network slice identifier to the service data stream to be transmitted, the radio access network and the UE can identify the data streams of different network slices, so that the data streams of different network slices can be identified. Different network slices isolate corresponding resources.

Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description, claims, and drawings.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. 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 attached image:

FIG. 1 is a schematic flowchart of an implementation of a data transmission configuration method in an embodiment of the present invention;

FIG. 2 is the management of end-to-end (E2E service) network slices based on QoS flow in an embodiment of the present invention;

3 is a schematic diagram of a network slice management model based on a QoS group in an embodiment of the present invention;

FIG. 4 is a schematic diagram of an implementation flowchart of a data transmission method implemented by a radio access network side in an embodiment of the present invention;

FIG. 5 is a schematic diagram of an implementation flow of a data transmission method implemented by a UE side in an embodiment of the present invention;

6 is a schematic structural diagram of a data transmission configuration apparatus in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a data transmission apparatus implemented at a radio access network side in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a data transmission apparatus implemented by a UE side in an embodiment of the present invention.

Detailed ways

In order to realize logical isolation of different network slice resources on the radio access network and UE side for network slicing application scenarios, embodiments of the present invention provide a data transmission configuration and a data transmission method and apparatus.

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention, and in the case of no conflict, the present invention The embodiments in and features in the embodiments can be combined with each other.

Taking an example as an example to better understand the embodiments of the present invention, the following briefly introduces QoS and wireless data bearer in a wireless communication network.

A wireless communication network (for example, an LTE network, which is described below by taking an LTE network as an example) is a data network that carries various services (eg, Internet browsing, voice, online games, etc.). Due to differences in service characteristics and requirements (for example, different services have different sensitivity to time delay, different requirements for transmission bandwidth, etc.), the LTE network needs to be able to provide QoS services for different services and different users.

In an LTE network, the core network (EPS) and the radio side (eNB) play different roles in the QoS process. In general, some active constraints and settings related to QoS are mostly carried out on the core network side (such as the setting of user subscription rate, the service priority carried by users, etc.); the wireless side is more on the execution core Network strategy: According to the QoS parameters sent by the core network, the resources on the radio side are scheduled.

In the process of attaching the UE to the LTE network, it is necessary to create an EPS (Evolved Packet System) bearer (UE-eNB-S-GW (Service Gateway)-P- GW). Each UE can have multiple bearers, and the number depends on the services it uses (eg, web browsing, IPTV, voice, etc.) and the policies adopted by the operator for different services. If the UE uses multiple services (such as accessing multiple websites), from the P-GW side, there are multiple IP data flows (IPflows), and the P-GW needs to map these IP flows to SDF (Service Data Flow, service data flow). flow), and then mapped to the bearer after SDF-level QoS processing, and delivered to the UE. After P-GW mapping, bearer-level QoS processing is performed inside the LTE network.

In EPS, the basic unit of QoS control is the bearer. The service data flow mapped to the same EPS bearer will get the same QoS guarantee (such as scheduling policy, radio bearer policy, etc.). If you want to provide different QoS for two SDFs (Service Data Flow, service data flow), the two SDFs need to establish different EPS bearers respectively.

Based on this, an embodiment of the present invention provides a data transmission configuration method, as shown in FIG. 1 , which may include the following steps:

S11. For the service data flow to be transmitted, determine the QoS policy and network slice corresponding to the service data flow.

S12. Add a network slice identifier to the service data stream according to the network slice corresponding to the service data stream.

The network slice identifier is used to instruct the wireless access network device to determine, according to the network slice identifier, a network slice corresponding to the service data stream to be transmitted to allocate wireless transmission resources to the service data stream to be transmitted, so as to allocate wireless transmission resources to different network slices. The sliced wireless transmission resources are isolated; and the network slice identifier is used to instruct the user equipment UE to map the received service data stream to a corresponding network slice for processing according to the network slice identifier when receiving a service data stream, to isolate the processing resources of different network slices.

S13. According to the determined QoS policy, map the service data flow added with the network slice identifier to the wireless data bearer established for the QoS policy for transmission.

As shown in FIG. 2 , in order to facilitate the isolation of slice resources of the access network, an end-to-end (E2E service) network slice management based on QoS flow is introduced in the embodiment of the present invention. Among them, NG-RAN is a radio access network based on next-generation cloud computing, NG-CN is a core network based on generation cloud computing, NR (New Radio, new air interface) Node (base station), and Radio Bearer refers to a radio bearer.

In the case that the service of network slicing has multiple QoS requirements, a management method based on QoS flow group is proposed in the embodiment of the present invention. Figure 2 shows the network slicing model after QoS processing. There may be multiple PDU sessions in a network slice, and there may be multiple QoS flows in each PDU session. These QoS flows are finally mapped to radio bearers for transmission.

In order to enable the radio access network device and the UE to distinguish service data flows from different network slices, so as to logically isolate the corresponding radio transmission resources or terminal processing resources, in this embodiment of the present invention, on the core network side, according to The network slice corresponding to the service data stream adds a network slice identifier to the service data stream. Specifically, in this embodiment of the present invention, the management of network slices is implemented by introducing a QoS group mark. For multiple QoS flows (Qosflow) under the same network slice, a QoS flow group (Qos flow group) is formed. For the same network slice, it may have multiple QoS flows. Although these QoS flows correspond to different QoS flow ids (QoS flow identifiers), these QoS flows should have the same network slice QoS group (Qos flow group id, QoS). flow group identifier) to indicate that this group of QoS flows corresponds to the same network slice. Both the UE side and the RAN (Radio Access Network) side need to maintain QoS flow group identifiers corresponding to all QoS flows. It is ensured that both the UE and the RAN can identify all the corresponding QoS flows in the network slice, and can distinguish the QoS flows corresponding to different network slices. The QoS flow involved in the embodiment of the present invention refers to a service data flow corresponding to a QoS policy.

Figure 3 shows the network slice management model diagram based on the QoS group. The UE is connected to 3 network slices, and the services of slice 1 (network slice 1) are transmitted through QoS flow 1, QoS flow 2 and QoS flow 3, which have the same Qosflow group id 1. The service of slice 2 is transmitted through QoS flow 4 and the slice is marked with QoS flow group 2, and the service of slice 3 is transmitted through QoS flow 5 and QoS flow 6, which have the same qos flowgroup id3. After the mapping of QoS stream to DRB (Radio Data Bearer), after UE receives data streams from each network slice through different DRBs, it maps to different network slices through QoS slice group id, so as to realize end-to-end data isolation and logic Resource isolation.

Preferably, in the specific implementation, in order to facilitate the wireless access network side equipment to distinguish different network slices, in this embodiment of the present invention, the wireless access network equipment may be notified of network handover identifiers corresponding to different wireless data bearers in any of the following ways.

method one,

When mapping the service data flow for which the QoS policy is determined to the wireless data bearer, indirectly notify the wireless access network device to transmit the service data flow through the corresponding relationship between the service data flow and the network slice determined in step S12. Correspondence between wireless data bearer and network slicing. Taking Figure 3 as an example, assuming that QoS Flow1 and QoS Flow2 are mapped to DRB1 for transmission according to the preset QoS policy, and the network slice identifier corresponding to QoS Flow1 and QoS Flow2 is group1, it can be determined that the network slice identifier corresponding to DRB1 is also group1. .

Method two,

Allocate new network slice identifiers for wireless data bearers, that is, for wireless data bearers corresponding to different network slices, the core network side reassigns network slice identifiers for wireless data bearers, so that wireless access network devices can distinguish different network slices. In this way, network slice resources can be isolated at the wireless data bearer granularity, and logical isolation can be performed for different network slices when the access network performs resource allocation and scheduling.

Correspondingly, the embodiment of the present invention also provides a data transmission method implemented by the radio access network side and the UE side respectively, which are introduced separately below.

As shown in FIG. 4 , it is a data transmission method implemented on the wireless access network side provided by an embodiment of the present invention, which may include the following steps:

S41 , using the wireless data bearer established with the core network device to receive the service data stream to be transmitted.

S42: Allocate wireless transmission resources for the service data stream to be transmitted according to the network slice identifier corresponding to the wireless data bearer, so as to isolate the wireless transmission resources of different network slices.

Preferably, the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream. The network access device may determine the network slice identifier corresponding to the wireless data bearer according to the following method: determining that the network slice identifier carried by the service data flow is the network slice identifier corresponding to the wireless data bearer.

Alternatively, during specific implementation, the radio access network device may also receive a network slice identifier allocated by the core network device for the wireless data bearer. In this way, in step 42, the wireless access network device may determine the network slice identifier corresponding to the wireless data bearer according to the network slice identifier allocated by the core network device for the wireless data bearer.

As shown in Figure 5, it is a schematic diagram of the implementation flow of the data transmission method implemented by the UE side, which may include the following steps:

S51. Receive a service data stream, where the service data stream carries a network slice identifier.

The network slice identifier is added by the core network device for the service data flow according to the network slice corresponding to the service data flow.

S52. Map the received service data stream to a corresponding network slice for processing according to the network slice identifier, so as to isolate processing resources of different network slices.

Based on the same inventive concept, an embodiment of the present invention also provides a data transmission configuration and a data transmission device. Since the above-mentioned device solves the problem in a similar way to the above-mentioned data transmission configuration and data transmission method, the implementation of the above-mentioned device can refer to the method implementation, and the repetition will not be repeated.

As shown in FIG. 6 , which is a schematic structural diagram of a data transmission configuration apparatus provided by an embodiment of the present invention, which may include:

a first determining unit 61, configured to determine, for the service data flow to be transmitted, the QoS policy and network slice corresponding to the service data flow;

An adding unit 62 is configured to add a network slice identifier to the service data stream according to the network slice corresponding to the service data stream;

The mapping unit 63 is configured to, according to the determined QoS policy, map the service data flow added with the network slice identifier to the wireless data bearer established for the QoS policy for transmission.

Preferably, the network slice identifier is used to instruct the wireless access network device to determine, according to the network slice identifier, a network slice corresponding to the service data stream to be transmitted to allocate wireless transmission resources to the service data stream to be transmitted, so as to allocate wireless transmission resources to the service data stream to be transmitted. The wireless transmission resources of network slicing are isolated. Or the network slice identifier is used to instruct the user equipment UE to map the received service data stream to the corresponding network slice for processing according to the network slice identifier when receiving the service data stream, so as to process the processing resources of different network slices. isolate.

Optionally, the data transmission configuration apparatus provided in the embodiment of the present invention may further include:

a second determining unit, configured to determine the network slice identifier corresponding to the wireless data bearer according to the correspondence between the service data stream and the wireless data bearer; or

an allocation unit, configured to reallocate a network slice identifier to the wireless data bearer.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described respectively. Of course, when implementing the present invention, the functions of each module (or unit) may be implemented in one or more software or hardware. For example, the above-mentioned data transmission configuration apparatus may be set in the core network equipment.

As shown in FIG. 7 , which is a schematic structural diagram of a data transmission apparatus implemented on the radio access network side provided by an embodiment of the present invention, including:

The first receiving unit 71 is configured to receive the service data stream to be transmitted by using the wireless data bearer established with the core network device;

The allocation unit 72 is configured to allocate wireless transmission resources to the service data flow to be transmitted according to the network slice identifier corresponding to the wireless data bearer, so as to isolate the wireless transmission resources of different network slices.

Preferably, the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream; and

The data transmission device implemented on the wireless access network side further includes:

A determining unit, configured to determine that the network slice identifier carried by the service data stream is the network slice identifier corresponding to the wireless data bearer.

Optionally, the data transmission device implemented on the radio access network side further includes:

a second receiving unit, configured to receive the network allocated by the core network device for the wireless data bearer before the first receiving unit receives the service data stream to be transmitted by using the wireless data bearer established with the core network device Slice ID.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described respectively. Of course, when implementing the present invention, the functions of each module (or unit) may be implemented in one or more software or hardware. For example, the above-mentioned data transmission configuration apparatus may be set in a wireless access network device.

As shown in FIG. 8 , it is a data transmission device implemented on the UE side provided by an embodiment of the present invention, including:

The receiving unit 81 is configured to receive a service data stream, where the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream. ;

The mapping unit 82 is configured to map the received service data stream to a corresponding network slice for processing according to the network slice identifier, so as to isolate processing resources of different network slices.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described respectively. Of course, when implementing the present invention, the functions of each module (or unit) may be implemented in one or more software or hardware. For example, the above-mentioned data transmission configuration apparatus may be provided in the UE.

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, CD-ROM, optical storage, etc.) 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 in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Although the preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of the present invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these 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 these modifications and variations.

Claims (12)

1. a data transmission configuration method, is characterized in that, comprises: For the service data flow to be transmitted, determine the QoS policy and network slice corresponding to the service data flow; adding a network slice identifier to the service data stream according to the network slice corresponding to the service data stream; and According to the determined QoS policy, the service data flow after adding the network slice identifier is mapped to the wireless data bearer established for the QoS policy for transmission; According to the determined QoS policy, when the service data flow added with the network slice identifier is mapped to the wireless data bearer established for the QoS policy for transmission, the method further includes: Determine that the network slice identifier carried by the service data stream is the network slice identifier corresponding to the wireless data bearer; or A network slice identifier is reassigned to the wireless data bearer. 2 . The method according to claim 1 , wherein the network slice identifier carried by the service data stream is used to instruct a wireless access network device to determine the service to be transmitted according to the network slice identifier carried by the service data stream. 3 . The network slice corresponding to the data stream allocates wireless transmission resources to the service data stream to be transmitted, so as to isolate the wireless transmission resources of different network slices. 3. The method according to claim 1, wherein the network slice identifier carried by the service data stream is used to indicate that the user equipment UE, when receiving the service data stream, according to the network slice identifier carried by the service data stream The received service data streams are mapped to corresponding network slices for processing, so as to isolate the processing resources of different network slices. 4. a data transmission method, is characterized in that, comprises: Use the wireless data bearer established with the core network device to receive the service data stream to be transmitted, the service data stream carries a network slice identifier, and the network slice identifier corresponds to the core network device according to the service data stream. The network slice added for the service data flow; and Determine the network slice identifier corresponding to the wireless data bearer according to the following method: determining that the network slice identifier carried by the service data stream is the network slice identifier corresponding to the wireless data bearer; According to the network slice identifier corresponding to the wireless data bearer, wireless transmission resources are allocated to the service data flow to be transmitted, so as to isolate the wireless transmission resources of different network slices. 5. The method according to claim 4, wherein before using the wireless data bearer established with the core network device to receive the service data stream to be transmitted, the method further comprises: A network slice identifier allocated by the core network device for the wireless data bearer is received. 6. a data transmission method, is characterized in that, comprises: Receive a service data stream, where the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream, and the service data stream It is sent by the core network device, according to the determined QoS policy corresponding to the service data flow, by mapping the service data flow after adding the network slice identifier to the wireless data bearer established for the QoS policy. When the core network device maps the service data stream added with the network slice identifier to the wireless data bearer established for the QoS policy for sending, it determines that the network slice identifier carried by the service data stream is the wireless data stream. bear the corresponding network slice identifier, or reassign the network slice identifier for the wireless data bearer; According to the network slice identifier carried by the service data stream, the received service data stream is mapped to the corresponding network slice for processing, so as to isolate the processing resources of different network slices. 7. A data transmission configuration device, comprising: a first determining unit, configured to determine the QoS policy and network slice corresponding to the service data flow for the service data flow to be transmitted; An adding unit, configured to add a network slice identifier to the service data stream according to the network slice corresponding to the service data stream; a mapping unit, configured to map, according to the determined QoS policy, the service data flow added with the network slice identifier to the wireless data bearer established for the QoS policy for transmission; The device also includes: a second determining unit, configured to determine that the network slice identifier carried by the service data stream is the network slice identifier corresponding to the wireless data bearer; or an allocation unit, configured to reallocate a network slice identifier to the wireless data bearer. 8 . The apparatus according to claim 7 , wherein the network slice identifier carried by the service data stream is used to instruct a wireless access network device to determine the service to be transmitted according to the network slice identifier carried by the service data stream. 9 . The network slice corresponding to the data stream allocates wireless transmission resources to the service data stream to be transmitted, so as to isolate the wireless transmission resources of different network slices. 9 . The apparatus according to claim 7 , wherein the network slice identifier carried by the service data stream is used to instruct the user equipment (UE) to, when receiving the service data stream, according to the network slice identifier carried by the service data stream. 10 . The received service data streams are mapped to corresponding network slices for processing, so as to isolate the processing resources of different network slices. 10. A data transmission device, comprising: a first receiving unit, configured to receive a service data stream to be transmitted by using a wireless data bearer established with a core network device, the service data stream carrying a network slice identifier, and the network slice identifier is the core network device added for the service data stream according to the network slice corresponding to the service data stream; a determining unit, configured to determine that the network slice identifier carried by the service data stream is the network slice identifier corresponding to the wireless data bearer; The allocation unit is configured to allocate wireless transmission resources to the service data flow to be transmitted according to the network slice identifier corresponding to the wireless data bearer, so as to isolate the wireless transmission resources of different network slices. 11. The apparatus of claim 10, further comprising: a second receiving unit, configured to receive the network allocated by the core network device for the wireless data bearer before the first receiving unit receives the service data stream to be transmitted by using the wireless data bearer established with the core network device Slice ID. 12. A data transmission device, comprising: a receiving unit, configured to receive a service data stream, where the service data stream carries a network slice identifier, and the network slice identifier is added by the core network device for the service data stream according to the network slice corresponding to the service data stream, The service data flow is that the core network device maps the service data flow after adding the network slice identifier to the wireless data bearer established for the QoS policy according to the determined QoS policy corresponding to the service data flow. When the core network device maps the service data flow added with the network slice identifier to the wireless data bearer established for the QoS policy and sends it, determine the network slice identifier carried by the service data stream A network slice identifier corresponding to the wireless data bearer, or reassigning a network slice identifier for the wireless data bearer; The mapping unit is configured to map the received service data stream to a corresponding network slice for processing according to the network slice identifier carried by the service data stream, so as to isolate the processing resources of different network slices.

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