CN113473536B - Data transmission method and device - Google Patents

Abstract

The invention discloses a data transmission method and device, and relates to the technical field of communication. The method includes: receiving a transmission priority request sent by a first transmission node, where the transmission priority request includes an identification of a target transmission direction and a target slice; acquiring session information of the first transmission node; and the identification of the target slice to generate a first scheduling instruction; the first scheduling instruction is sent to the first transmission node, and the first transmission node performs scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters are based on Scheduling identifier, transmit the first non-target data to the cache node, and transmit the target data according to the target transmission direction, wherein, the first non-target data is the transmission direction in the slice and the target transmission direction of the first transmission node except the target slice For the same data, the target data is the data whose transmission direction in the target slice of the first transmission node is the same as the target transmission direction.

Description

Data transmission method and device

technical field

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

Background technique

Network slicing is a collection of network functions with specific wireless configuration and transmission configuration, which can provide operators with multiple end-to-end virtual networks on the same set of physical equipment. In a 5G (5th Generation Mobile Communication Technology, fifth-generation mobile communication technology) network, a terminal has the ability to simultaneously access two or more network slices, and when a terminal accesses multiple network slices at the same time, these network slices share the terminal's transfer resources. However, due to the limited transmission resources allocated by operators to terminals, when a network slice needs to transmit data preferentially, other network slices occupy terminal resources to transmit data, resulting in that the network slice cannot transmit data in time.

Contents of the invention

To this end, the present invention provides a data transmission method and device to solve the problem that due to the limited transmission resources of the terminal, other network slices occupy the terminal resources to transmit data, resulting in the problem that the network slices with priority data transmission requirements cannot transmit data in time.

In order to achieve the above object, the first aspect of the present invention provides a data transmission method, the method comprising:

receiving a transmission priority request sent by the first transmission node, where the transmission priority request includes a target transmission direction and an identifier of a target slice;

Obtain session information of the first transmission node;

generating a first scheduling instruction according to the session information of the first transmission node, the target transmission direction, and the identifier of the target slice;

Sending the first scheduling instruction to the first transmission node, so that the first transmission node performs scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters according to the a scheduling identifier, transmitting the first non-target data to a cache node, and transmitting target data without a scheduling identifier according to the target transmission direction, wherein the first non-target data is The data in the slice other than the target slice has the same transmission direction as the target transmission direction, and the target data is the data in the target slice in the first transmission node with the same transmission direction as the target transmission direction.

Further, the session information of the first transmission node includes transmission data, transmission direction and slice identifier of the first transmission node;

The acquiring session information of the first transmission node includes:

sending a session information acquisition request to the first transfer node;

Receive the session information of the first transmission node returned by the first transmission node.

Further, the uplink and downlink splitters are respectively connected to the uplink channel and the downlink channel of the slice communication link;

The sending the first scheduling instruction to the first transmission node, so that the first transmission node can schedule and identify the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters according to The scheduling identifier is used to transmit the first non-target data to the cache node, and to transmit the target data without the scheduling identifier according to the target transmission direction, including:

sending the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink branches When the device receives the first non-target data with the scheduling identifier, it transmits the first non-target data to the cache node through the link channel opposite to the target transmission direction, and when receiving the untargeted data In the case of the target data marked by scheduling, transmit the target data according to the target transmission direction.

Further, after receiving the transmission priority request sent by the first transmission node, the method further includes:

determining a second transmission node in the management area according to the target transmission direction, the identifier of the target slice, a preset priority policy, and pre-stored slice information;

Obtain session information of the second transmission node;

generating a second scheduling instruction according to the session information of the second transmission node, the target transmission direction, and the identifier of the target slice;

sending the second scheduling instruction to the second transmission node, so that the second transmission node can schedule and identify the second non-target data according to the second scheduling instruction, so that the uplink and downlink splitters according to The scheduling identifier transmits the second non-target data to the cache node, wherein the second non-target data is data whose transmission direction in the target slice in the second transmission node is the same as the target transmission direction .

Further, the preset priority policy is to access the target slice in the management area, and the data network address corresponding to the target slice corresponds to the data network address of the target slice in the first transmission node The address is the same, and there is at least one transmission node that is the same as the user plane functional entity connected to the first transmission node among the connected user plane functional entities, and is determined as the second transmission node.

Further, the pre-stored slice information includes slice registration information and slice connection information;

Before determining the second transmission node in the management area according to the target transmission direction, the identification of the target slice, the preset priority policy and the pre-stored slice information, it also includes:

receiving slice registration information and slice connection information sent by the transmission node in the management area, wherein the slice registration information is information generated and sent by the transmission node when the slice is successfully registered, and the slice registration information includes transmission A node identifier and a slice identifier, the slice connection information is information generated and sent by the transmission node when accessing the slice to establish a session, and the slice connection information includes the data network address pointed to by the session, the transmission node identifier, and the user plane Functional entity identification;

The slice registration information and the slice connection information are stored to obtain the pre-stored slice information.

Further, after determining the second transmission node in the management area according to the target transmission direction, the identification of the target slice, the preset priority policy and the pre-stored slice information, the method further includes:

determining conflicting paths between the first transfer node and the second transfer node;

Obtain session information of the conflicting path;

generating a third scheduling instruction according to the session data of the conflicting path;

sending the third scheduling instruction to the second transmission node, so that the second transmission node can perform scheduling identification on third non-target data according to the third scheduling instruction, so that the uplink and downlink splitters according to The scheduling identifier transmits the third non-target data to the cache node, wherein the third non-target data is data whose transmission direction is the same as the target transmission direction in the conflicting path by the second transmission node .

Further, the determining the conflict path between the first transmission node and the second transmission node includes:

sending a route acquisition request to an access and mobility management functional entity, where the route acquisition request includes the identifier of the first transfer node and the identifier of the second transfer node;

receiving routing information returned by the access and mobility management functional entity, where the routing information includes first routing information corresponding to the first transfer node and second routing information corresponding to the second transfer node;

Determine a conflicting path between the first transmission node and the second transmission node according to the first routing information and the second routing information.

Further, after sending the first scheduling instruction to the first transmission node, the method further includes:

receiving a transmission priority release message sent by the first transmission node;

Sending a transmission recovery instruction to the cache node, so that the cache node resumes the transmission operation of the first non-target data according to the transmission recovery instruction.

In order to achieve the above object, the second aspect of the present invention provides a data transmission device, the device includes:

A receiving module configured to receive a transmission priority request sent by the first transmission node, wherein the transmission priority request includes a target transmission direction and an identifier of a target slice;

an obtaining module configured to obtain session information of the first transmission node;

A generating module configured to generate a first scheduling instruction according to the session information of the first transmission node, the target transmission direction, and the identifier of the target slice;

The sending module is configured to send the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink The demultiplexer transmits the first non-target data to the cache node according to the scheduling identifier, and transmits the target data without the scheduling identifier according to the target transmission direction, wherein the first non-target data is the The data whose transmission direction in the slice other than the target slice of the first transmission node is the same as the target transmission direction, and the target data is the transmission direction of the target slice in the first transmission node and the target data Data is transmitted in the same direction.

The present invention has the following advantages:

The data transmission method provided by the present invention receives the transmission priority request sent by the first transmission node, wherein the transmission priority request includes the identification of the target transmission direction and the target slice; obtains the session information of the first transmission node; according to the first transmission node The session information, the target transmission direction and the identification of the target slice generate a first scheduling instruction; send the first scheduling instruction to the first transmission node, so that the first transmission node can schedule the first non-target data according to the first scheduling instruction identification, so that the uplink and downlink splitters transmit the first non-target data to the cache node according to the scheduling identification, and transmit the target data without the scheduling identification according to the target transmission direction, wherein the first non-target data is the first transmission node The data in the slice other than the target slice has the same transmission direction as the target transmission direction, and the target data is the data in the target slice in the first transmission node with the same transmission direction as the target transmission direction. In the case of limited transmission resources, the transmission resources of the transmission nodes are preferentially allocated to the target slices with transmission priority requests, so that the data of the target slices in the target transmission direction can be transmitted in time, which improves the user experience.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention.

FIG. 1 is a flowchart of a data transmission method provided by Embodiment 1 of the present invention;

FIG. 2 is a flowchart of a data transmission method provided by Embodiment 2 of the present invention;

FIG. 3 is a flowchart of a data transmission method provided by Embodiment 3 of the present invention;

FIG. 4 is a flowchart of a data transmission method provided by Embodiment 4 of the present invention;

FIG. 5 is a block diagram of a data transmission device provided in Embodiment 5 of the present invention;

FIG. 6 is a block diagram of a data transmission system provided by Embodiment 6 of the present invention.

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

The first aspect of the present application provides a data transmission method. FIG. 1 is a flow chart of a data transmission method provided in Embodiment 1 of the present application, and the method can be applied to a transmission management network element. As shown in Figure 1, the method includes the following steps:

Step S101, receiving a transmission priority request sent by a first transmission node.

Wherein, the transmission priority request includes a target transmission direction and an identifier of a target slice. The first transmission node is a node with a data transmission function, including a terminal, a data network server, and the like. When the first transmission node is a terminal, the current method is suitable for the terminal to transmit data to the data network server, that is, the target slice is the network slice accessed by the terminal, and correspondingly, the target transmission direction is the uplink direction; when the first transmission node is the data network For the server, the current method is applicable to the data network server delivering data to the terminal, that is, the target slice is the network slice corresponding to the data network server, and correspondingly, the target transmission direction is the downlink direction.

Taking the first transmission node as the terminal for illustration, in some embodiments, when the terminal has a transmission priority requirement, it generates a transmission priority request according to the target transmission direction and the identification of the target slice, and sends the transmission priority request to the transmission management network element. Wherein, the transmission management network element is a newly added network element in this application, and is used to realize the data transmission method provided in this application.

In some specific implementations, the transmission management network element can be deployed between the wireless network and the core network. For example, the transmission management network element is deployed at the N2 interface between the access network (Access Network, AN) and the access and management function entity (Access and Mobility Management Function, AMF).

It should be noted that the deployment method of the transmission management network element above is only an example, and other unexplained deployment methods are also within the protection scope of this application, and those skilled in the art can flexibly deploy the transmission management network element according to actual needs.

Step S102, acquiring session information of the first transmission node.

Wherein, the session information of the first transmission node includes transmission data, transmission direction and slice identifier of the first transmission node.

In some embodiments, the transmission management network element sends a session information acquisition request to the first transmission node. After receiving the session information acquisition request, the first transmission node responds to the request, acquires the session information of the first transmission node, and sends the session information to the transmission management network element. The transmission management network element receives the session information of the first transmission node returned by the first transmission node.

Step S103: Generate a first scheduling instruction according to the session information of the first transmission node, the target transmission direction and the identifier of the target slice.

Wherein, the first scheduling instruction is used to enable the first transmission node to perform scheduling identification on the first non-target data. The first non-target data is data whose transmission direction in the slice other than the target slice by the first transmission node is the same as the target transmission direction. Corresponding to the first non-target data, the target data is data whose transmission direction in the target slice in the first transmission node is the same as the target transmission direction.

In some embodiments, the transmission management network element generates the first scheduling instruction according to the session information of the first transmission node, the target transmission direction and the identifier of the target slice.

Step S104, sending the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters can send the first non-target data according to the scheduling identification. The target data is transmitted to the cache node, and the target data without the scheduling flag is transmitted according to the target transmission direction.

Wherein, the uplink and downlink splitters respectively connect the uplink channel and the downlink channel of the communication link of the slice. In other words, the function of the uplink and downlink splitter is to connect the uplink and downlink. In the prior art, data packets in the uplink direction can only be transmitted in the uplink direction, and data packets in the downlink direction can only be transmitted in the downlink direction. In this application, after adding an uplink and downlink splitter between uplink and downlink, data can be directly switched from uplink to downlink for transmission, or directly switched from downlink to uplink for transmission.

When there is congestion in a certain transmission direction of the data link, the data packets in the transmission direction can be transmitted to the data link opposite to the transmission direction through the uplink and downlink splitters, and reversed from the data link opposite to the transmission direction Transfer packets to nearby caching nodes. After the link is not congested, the data packet is transmitted from the cache node to the original data link through the uplink and downlink splitters, and then transmitted to the destination address.

In some embodiments, the transmission management network element sends the first scheduling instruction to the first transmission node. After receiving the first scheduling instruction, the first transmission node performs scheduling identification on the first non-target data according to the session information, the target transmission direction, and the identification of the target slice in the first scheduling instruction. Based on this, the data of the first transmission node is divided into two types, the first type is the first non-target data marked by scheduling, and the second type is target data not marked by scheduling. After the first transmission node transmits the data, when the uplink and downlink splitters in the data link receive the first non-target data with the scheduling identifier, they transmit the first non-target data through the link channel opposite to the target transmission direction. The target data is transmitted to the cache node, and in the case of receiving the target data without the scheduling flag, the target data is transmitted according to the target transmission direction.

Wherein, the cache node is a node with a cache function deployed near the uplink and downlink splitters. In some specific implementations, after receiving data, the uplink and downlink splitters first determine whether the data has a scheduling identifier. When the data has a scheduling identifier, the uplink and downlink splitters transmit the data in reverse (reverse refers to the direction opposite to the target transmission direction) to the cache node. When the data does not have a scheduling identifier, the uplink and downlink splitters transmit the data according to the target transmission direction to transfer.

It should be noted that after the uplink and downlink demultiplexer determines that the data has a scheduling identifier, before transmitting the data to the cache node, the scheduling identifier of the data may be deleted, or a new identifier (for example, a recovery transmission identifier) may be added to the data, so that When restoring transmission resources, the uplink and downlink splitters can transmit this part of data to the original data link, avoiding to cache the data again according to the scheduling identifier.

The data transmission method provided by the present invention receives the transmission priority request sent by the first transmission node, wherein the transmission priority request includes the identification of the target transmission direction and the target slice; obtains the session information of the first transmission node; according to the first transmission node The session information, the target transmission direction and the identification of the target slice generate a first scheduling instruction; send the first scheduling instruction to the first transmission node, so that the first transmission node can schedule the first non-target data according to the first scheduling instruction identification, so that the uplink and downlink splitters transmit the first non-target data to the cache node according to the scheduling identification, and transmit the target data without the scheduling identification according to the target transmission direction, wherein the first non-target data is the first transmission node The data in the slice other than the target slice has the same transmission direction as the target transmission direction, and the target data is the data in the target slice in the first transmission node with the same transmission direction as the target transmission direction. In the case of limited transmission resources, the transmission resources of the transmission nodes are preferentially allocated to the target slices with transmission priority requests, so that the data of the target slices in the target transmission direction can be transmitted in time, which improves the user experience.

FIG. 2 is a flow chart of a data transmission method provided in Embodiment 2 of the present application, and the method can be applied to a transmission management network element. As shown in Figure 2, the method includes the following steps:

Step S201, receiving a transmission priority request sent by a first transmission node.

Step S202, acquiring session information of the first transmission node.

Step S203: Generate a first scheduling instruction according to the session information of the first transmission node, the target transmission direction, and the target slice identifier.

Step S204, sending the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters can send the first non-target data according to the scheduling identification. The target data is transmitted to the cache node, and the target data without the scheduling flag is transmitted according to the target transmission direction.

Steps S201-S204 in this embodiment are the same as steps S101-S104 in Embodiment 1 of the present application, and will not be repeated here.

Step S205, receiving a transmission priority release message sent by the first transmission node.

Wherein, the transmission priority release message is a message generated by the first transmission node and sent to the transmission management network element after the first transmission node completes the transmission of all the data of the target slice in the target transmission method. The transmission management network element receives the transmission priority release message sent by the first transmission node, that is, it knows that the first transmission node has completed the transmission operation of data with a higher priority.

Step S206, sending a transmission recovery instruction to the cache node, so that the cache node resumes the transmission operation of the first non-target data according to the transmission recovery instruction.

In some embodiments, after receiving the transmission priority release message, the transmission management network element sends the transmission resumption instruction to the caching node. The cache node receives the transmission recovery instruction, and transmits the previously cached first non-target data according to the original transmission direction.

In the data transmission method provided by the embodiment of the present application, after the first transmission node completes the transmission operation of the target data, it sends a transmission priority release message to the transmission management network element, and after receiving the transmission priority release message, the transmission management network element sends the transmission priority release message to the cache node. The transmission recovery instruction enables the cache node to resume the transmission operation of the first non-target data, ensuring that all data of the first transmission node are sequentially transmitted to the corresponding destination address according to the transmission priority.

FIG. 3 is a flow chart of a data transmission method provided in Embodiment 3 of the present application, and the method can be applied to a transmission management network element. As shown in Figure 3, the method includes the following steps:

Step S301, receiving a transmission priority request sent by a first transmission node.

Step S301 in this embodiment is the same as step S101 in Embodiment 1 of the present application, and will not be repeated here.

Step S302: Determine a second transmission node in the management area according to the target transmission direction, the identifier of the target slice, the preset priority policy, and the pre-stored slice information.

Wherein, the preset priority policy is to access the target slice in the management area, and the data network address corresponding to the target slice is the same as the data network address corresponding to the target slice in the first transmission node, and at least one of the connected user plane functional entities exists A transport node that is the same as the user plane functional entity connected to the first transport node is determined as the second transport node. In some specific implementations, the management area is an area unit set according to a tracking area (Tracing Area, TA) and used for transmission management. For example, a transmission management network element is set in each TA, and the management area of the transmission management network element is the corresponding TA.

For example, the pre-stored slice information of the transmission management network element is shown in Table 1.

Table 1 Pre-stored slice information

Among them, terminal A to terminal D are all transmission nodes located in the management area of transmission management network elements, terminal A is a transmission node with a transmission priority request (that is, terminal A is the first transmission node), and the identifier of the target slice is NSSAI -ID=8, the target transmission direction is the uplink direction.

For terminal B, there is also a connection relationship with the slice of NSSAI-ID=8, and the DN:ip3 corresponding to NSSAI-ID=8 in terminal B is the same as that of terminal A, and the connected user plane functional entities are identified as 18 and 19 The user plane functional entity is also the same as terminal A. Therefore, it is determined that terminal B is the second transmission node.

For terminal C, although it also has a connection relationship with the slice with NSSAI-ID=8, NSSAI-ID=8 in terminal C corresponds to DN:ip9, which is different from terminal A, and the user plane functional entity connected to terminal C is the same as terminal A The functional entities of the user plane are different. Therefore, terminal C is not the second transfer node.

For terminal D, there is also a connection relationship with the slice of NSSAI-ID=8, and the DN:ip3 corresponding to NSSAI-ID=8 in terminal D is the same as that of terminal A, but the user plane functional entity connected to terminal D is the same as that of terminal A The connected user plane functional entities are all different. Therefore, terminal D is not the second transmission node either.

To sum up, only terminal B belongs to the second transmission node.

It should be noted that, in some embodiments, before determining the second transmission node in the management area according to the target transmission direction, the identification of the target slice, the preset priority policy and the pre-stored slice information, the method further includes:

Receive the slice registration information and slice connection information sent by the transmission node in the management area. The slice registration information is the information generated and sent by the transmission node when the slice is successfully registered. The slice registration information includes the transmission node ID and slice ID, and the slice connection information The information is the information generated and sent by the transmission node when accessing the slice to establish a session. The slice connection information includes the data network address pointed to by the session, the transmission node identifier and the user plane functional entity identifier; the slice registration information and the slice connection information are stored , to obtain pre-stored slice information.

Step S303, acquiring session information of the second transmission node.

Wherein, the session information of the second transmission node includes transmission data, transmission direction and slice identifier of the second transmission node.

In some embodiments, the transmission management network element sends a session information acquisition request to the second transmission node. After receiving the session information acquisition request, the second transmission node responds to the request, acquires the session information of the second transmission node, and sends the session information to the transmission management network element. The transmission management network element receives the session information of the second transmission node returned by the second transmission node.

Step S304, generating a second scheduling instruction according to the session information of the second transmission node, the target transmission direction and the identifier of the target slice.

Wherein, the second scheduling instruction is used to enable the second transmission node to perform scheduling identification on the second non-target data. The second non-target data is data whose transmission direction in the target slice is the same as the target transmission direction in the second transmission node.

Step S305, sending the second scheduling instruction to the second transmission node, so that the second transmission node can perform scheduling identification on the second non-target data according to the second scheduling instruction, so that the uplink and downlink splitters can send the second non-target data according to the scheduling identification Data is transferred to cache nodes.

In some embodiments, the transmission management network element sends the second scheduling instruction to the second transmission node. After receiving the second scheduling instruction, the second transmission node performs scheduling identification on the second non-target data according to the session information, the target transmission direction, and the identification of the target slice in the second scheduling instruction. Based on this, the data of the second transmission node is divided into two types, the first type is the second non-target data identified by scheduling, and the second type is data not identified by scheduling. Wherein, the second non-target data will occupy the transmission resources of the target data. Therefore, for the second non-target data, when the uplink and downlink splitters in the data link receive the second non-target data with the scheduling identifier, The second non-target data is transmitted to the cache node through a link channel opposite to the target transmission direction. The data corresponding to the second transmission node without the scheduling identifier will not occupy the transmission resources of the target data. Therefore, for this type of data, the uplink and downlink splitters do not process it, and just transmit it directly according to the predetermined transmission direction.

FIG. 4 is a flow chart of a data transmission method provided in Embodiment 4 of the present application, and the method can be applied to a transmission management network element. As shown in Figure 4, the method includes the following steps:

Step S401, receiving a transmission priority request sent by a first transmission node.

Step S402: Determine a second transmission node in the management area according to the target transmission direction, the identifier of the target slice, the preset priority policy, and the pre-stored slice information.

Steps S401-S402 in this embodiment are the same as steps S301-S302 in Embodiment 3 of the present application, and will not be repeated here.

Step S403, determining conflicting paths between the first transmission node and the second transmission node.

Wherein, the conflicting path refers to a path in the second transmission node that overlaps with a transmission path of the target data of the first transmission node.

In some embodiments, the transmission management network element sends a route acquisition request to the access and mobility management functional entity, where the route acquisition request includes the identifier of the first transport node and the identifier of the second transport node; receiving the access and mobility The routing information returned by the management function entity, wherein the routing information includes first routing information corresponding to the first transmission node and second routing information corresponding to the second transmission node; according to the first routing information and the second routing information, determine the first transmission A conflicting path between the node and the second transit node.

Step S404, acquiring session information of conflicting paths.

Wherein, the session information of the conflict path includes transmission data, transmission direction and slice identifier of the second transmission node in the conflict path.

Step S405, generating a third scheduling instruction according to the session data of the conflicting path.

Since the conflict path is a path that overlaps with the transmission path of the target data of the first transmission node in the second transmission node, that is, both the data of the second transmission node and the target data of the first transmission node are transmitted in the conflict path. Therefore, the transmission of data by the second transmission node on the conflicting path may affect the transmission of the target data in the first transmission node. Based on this, the transmission management network element generates a third scheduling instruction according to the session data of the conflicting path, for the second transmission node to perform scheduling identification on the third non-target data according to the third scheduling instruction. Wherein, the third non-target data is the data whose transmission direction is the same as the target transmission direction in the conflicting path by the second transmission node.

Step S406, sending the third scheduling instruction to the second transmission node, so that the second transmission node can perform scheduling identification on the third non-target data according to the third scheduling instruction, so that the uplink and downlink splitters can send the third non-target data according to the scheduling identification Data is transferred to cache nodes.

In some embodiments, the transmission management network element sends the third scheduling instruction to the second transmission node. After receiving the third scheduling instruction, the second transmission node performs scheduling identification on the third non-target data according to the session information, the target transmission direction, and the identification of the target slice in the third scheduling instruction. Since the third non-target data will occupy the transmission resources of the target data, for the third non-target data, when the uplink and downlink splitters in the data link receive the third non-target data with the scheduling identifier, through The link channel opposite to the target transmission direction transmits the third non-target data to the cache node.

In the data transmission method provided by the embodiment of the present application, when the first transmission node has a transmission priority request, firstly, the data in the slices other than the target slice in the first transmission node that is consistent with the target transmission direction is reversely transmitted to the cache node , assign the transmission resources to the data transmitted by the target slice in the target transmission direction in priority; secondly, determine the second transmission node that is in the same management area as the first transmission node and occupies the transmission resources of the target slice in the target transmission direction, and also Reversely transmit the data of the target slice in the target transmission direction in the second transmission node to the cache node, so as to avoid this part of data occupying the transmission resources of the target slice; at the same time, determine that there is a conflicting path between the second transmission node and the first transmission node , and release the transmission resources of the second transmission node on the conflicting path for the first transmission node to transmit data. This method releases transmission resources at least from the above three ways, so as to achieve priority allocation of transmission resources to the target slice of the transmission node with transmission priority request, so that the data of the target slice in the target transmission direction can be transmitted in time, thereby improving the user's Use experience.

The step division of the above various methods is only for the sake of clarity of description. During implementation, it can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this patent. ; Adding insignificant modifications or introducing insignificant designs to the algorithm or process, but not changing the core design of the algorithm and process are all within the scope of protection of this patent.

The second aspect of the present application provides a data transmission device. FIG. 5 is a block diagram of a data transmission device provided in Embodiment 5 of the present application. As shown in Figure 5, the data transmission device 500 includes:

The receiving module 501 is configured to receive the transmission priority request sent by the first transmission node.

The obtaining module 502 is configured to obtain session information of the first transmission node.

The generating module 503 is configured to generate a first scheduling instruction according to the session information of the first transmission node, the target transmission direction and the identifier of the target slice.

The sending module 504 is configured to send the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters can use the scheduling identification, The first non-target data is transmitted to the cache node, and the target data without the scheduling flag is transmitted according to the target transmission direction.

It should be noted that the data transmission device may be the transmission management network element itself, or may be a functional device integrated or deployed in the transmission management network element.

In the data transmission device provided by the embodiment of the present application, the receiving module receives the transmission priority request sent by the first transmission node, and the acquisition module obtains the session information of the first transmission node, and uses the generation module according to the session information of the first transmission node, the target The identification of the transmission direction and the target slice generates a first scheduling instruction, and the sending module sends the first scheduling instruction to the first transmission node, and the first transmission node performs scheduling identification on the first non-target data according to the first scheduling instruction, so that the up and down The row splitter transmits the first non-target data to the cache node according to the scheduling identifier, and transmits the target data without the scheduling identifier according to the target transmission direction, so that when the transmission resources are limited, the transmission resources of the transmission node are given priority Assigning to the target slice with the transmission priority request enables the data of the target slice in the target transmission direction to be transmitted in time, which improves the user experience.

The third aspect of the present application provides a data transmission system. FIG. 6 is a block diagram of a data transmission system provided in Embodiment 6 of the present application. As shown in Figure 6, the data transmission system 600 includes: a transmission management network element 610, A transmission node 621, B transmission node 622 to n transmission node 62n, a first uplink and downlink splitter 631, a second uplink and downlink splitter 632 to the mth uplink and downlink splitter 63m, the first cache node 641, the second cache node 642 to the mth cache node 64m, wherein, n and m are both integers greater than or equal to 1 (the choice between n and m The value size is not necessarily related).

Among them, the transmission management network element 610 is connected to the A transmission node 621, the B transmission node 622 to the n transmission node 62n, and is connected to the first uplink and downlink splitter 631, the second uplink and downlink splitter 632 to the mth uplink and downlink splitter The splitters 63m are also connected separately, and each uplink and downlink splitter is connected to a corresponding cache node.

In some embodiments, when any transmission node has a transmission priority request, the transmission management network element 610 starts the uplink and downlink splitter corresponding to the target transmission direction of the target slice, and the uplink and downlink splitter will divide the target data Other data other than , are dumped to the cache node, so that the transmission resources are preferentially allocated to the target transmission direction of the target slice.

It is worth mentioning that all the modules involved in this embodiment are logical modules. In practical applications, a logical unit can be a physical unit, or a part of a physical unit, or multiple physical units. Combination of units. In addition, in order to highlight the innovative part of the present invention, units that are not closely related to solving the technical problems proposed by the present invention are not introduced in this embodiment, but this does not mean that there are no other units in this embodiment.

It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (9)

1. A data transmission method, characterized in that it is applied to a transmission management network element, the method comprising: receiving a transmission priority request sent by the first transmission node, where the transmission priority request includes a target transmission direction and an identifier of a target slice; Obtain session information of the first transmission node; generating a first scheduling instruction according to the session information of the first transmission node, the target transmission direction, and the identifier of the target slice; Sending the first scheduling instruction to the first transmission node, so that the first transmission node performs scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters according to the a scheduling identifier, transmitting the first non-target data to a cache node, and transmitting target data without a scheduling identifier according to the target transmission direction, wherein the first non-target data is Data in a slice other than the target slice that has the same transmission direction as the target transmission direction, the target data being data in the target slice in the first transmission node that has the same transmission direction as the target transmission direction; Wherein, the uplink and downlink splitters are respectively connected to the uplink channel and the downlink channel of the slice communication link; The sending the first scheduling instruction to the first transmission node, so that the first transmission node can schedule and identify the first non-target data according to the first scheduling instruction, so that the uplink and downlink splitters according to The scheduling identifier is used to transmit the first non-target data to the cache node, and to transmit the target data without the scheduling identifier according to the target transmission direction, including: sending the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink branches When the device receives the first non-target data with the scheduling identifier, it transmits the first non-target data to the cache node through the link channel opposite to the target transmission direction, and when receiving the untargeted data In the case of the target data marked by scheduling, transmit the target data according to the target transmission direction. 2. The data transmission method according to claim 1, wherein the session information of the first transmission node includes transmission data, transmission direction and slice identifier of the first transmission node; The acquiring session information of the first transmission node includes: sending a session information acquisition request to the first transfer node; Receive the session information of the first transmission node returned by the first transmission node. 3. The data transmission method according to claim 1, further comprising: after receiving the transmission priority request sent by the first transmission node: determining a second transmission node in the management area according to the target transmission direction, the identifier of the target slice, a preset priority policy, and pre-stored slice information; Obtain session information of the second transmission node; generating a second scheduling instruction according to the session information of the second transmission node, the target transmission direction, and the identifier of the target slice; sending the second scheduling instruction to the second transmission node, so that the second transmission node can schedule and identify the second non-target data according to the second scheduling instruction, so that the uplink and downlink splitters according to The scheduling identifier transmits the second non-target data to the cache node, wherein the second non-target data is data whose transmission direction in the target slice in the second transmission node is the same as the target transmission direction . 4. The data transmission method according to claim 3, wherein the preset priority policy is to link the data network address that accesses the target slice in the management area and corresponds to the target slice with the The data network address corresponding to the target slice in the first transmission node is the same, and there is at least one transmission node that is the same as the user plane functional entity connected to the first transmission node among the connected user plane functional entities, and is determined as the first transmission node Two transmission nodes. 5. The data transmission method according to claim 3, wherein the pre-stored slice information includes slice registration information and slice connection information; Before determining the second transmission node in the management area according to the target transmission direction, the identification of the target slice, the preset priority policy and the pre-stored slice information, it also includes: receiving slice registration information and slice connection information sent by the transmission node in the management area, wherein the slice registration information is information generated and sent by the transmission node when the slice is successfully registered, and the slice registration information includes transmission A node identifier and a slice identifier, the slice connection information is information generated and sent by the transmission node when accessing the slice to establish a session, and the slice connection information includes the data network address pointed to by the session, the transmission node identifier, and the user plane Functional entity identification; The slice registration information and the slice connection information are stored to obtain the pre-stored slice information. 6. The data transmission method according to claim 3, characterized in that, according to the target transmission direction, the identification of the target slice, the preset priority policy and the pre-stored slice information, the second slice in the management area is determined. After the transfer node, also include: determining conflicting paths between the first transfer node and the second transfer node; Obtain session information of the conflicting path; generating a third scheduling instruction according to the session data of the conflicting path; sending the third scheduling instruction to the second transmission node, so that the second transmission node can perform scheduling identification on third non-target data according to the third scheduling instruction, so that the uplink and downlink splitters according to The scheduling identifier transmits the third non-target data to the cache node, wherein the third non-target data is data whose transmission direction is the same as the target transmission direction in the conflicting path by the second transmission node . 7. The data transmission method according to claim 6, wherein the determining the conflicting path between the first transmission node and the second transmission node comprises: sending a route acquisition request to an access and mobility management functional entity, where the route acquisition request includes the identifier of the first transfer node and the identifier of the second transfer node; receiving routing information returned by the access and mobility management functional entity, where the routing information includes first routing information corresponding to the first transfer node and second routing information corresponding to the second transfer node; Determine a conflicting path between the first transmission node and the second transmission node according to the first routing information and the second routing information. 8. The data transmission method according to claim 1, wherein after sending the first scheduling instruction to the first transmission node, further comprising: receiving a transmission priority release message sent by the first transmission node; Sending a transmission recovery instruction to the cache node, so that the cache node resumes the transmission operation of the first non-target data according to the transmission recovery instruction. 9. A data transmission device, characterized in that it comprises: A receiving module configured to receive a transmission priority request sent by the first transmission node, wherein the transmission priority request includes a target transmission direction and an identifier of a target slice; an obtaining module configured to obtain session information of the first transmission node; A generating module configured to generate a first scheduling instruction according to the session information of the first transmission node, the target transmission direction, and the identifier of the target slice; The sending module is configured to send the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction, so that the uplink and downlink The demultiplexer transmits the first non-target data to the cache node according to the scheduling identifier, and transmits the target data without the scheduling identifier according to the target transmission direction, wherein the first non-target data is the The data whose transmission direction in the slice other than the target slice of the first transmission node is the same as the target transmission direction, and the target data is the transmission direction of the target slice in the first transmission node and the target data data in the same direction of transmission; Wherein, the uplink and downlink splitters are respectively connected to the uplink channel and the downlink channel of the slice communication link; The sending module is specifically configured to: send the first scheduling instruction to the first transmission node, so that the first transmission node can perform scheduling identification on the first non-target data according to the first scheduling instruction so that when the uplink-downlink splitter receives the first non-target data with a scheduling identifier, it transmits the first non-target data to the target through a link channel opposite to the target transmission direction. The caching node transmits the target data according to the target transmission direction when receiving the target data without a scheduling flag.

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